[RBW] Re: Low Trail Fork Experiment ... FYI only - Not intended to start another debate...

2012-07-23 Thread allenmichael
I am also very interested in hearing about the Atlantis after it comes back 
from the painter. So far, my only complaint with my 56 Atlantis is fighting 
the front-end flop, going uphill with a front load at low speeds.


On Sunday, July 22, 2012 4:53:46 PM UTC-7, René wrote:

 Hi Ben,

 The Atlantis is still at the painters' so unfortunately I haven't tested 
 it yet. The Hunqapillar, though, I'm loving!

 René 

 On Saturday, July 21, 2012, thebvo wrote:

 Hey René
 I'm curious if you've had time to mount you low trail fork to your 
 Atlantis yet. I am bringing my Atlantis when I move to Japan in August and 
 I'm thinking about looking for a local fella/ gal to whip one up for me, 
 but I wanna hear your story first.
 Happy riding
 Ben

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Re: [RBW] Re: Low Trail Fork Experiment ... FYI only - Not intended to start another debate...

2012-07-23 Thread Steve Palincsar
On Mon, 2012-07-23 at 08:36 -0700, allenmichael wrote:
 I am also very interested in hearing about the Atlantis after it comes
 back from the painter. So far, my only complaint with my 56 Atlantis
 is fighting the front-end flop, going uphill with a front load at low
 speeds. 

However, would a low trail fork (i.e., one with more offset) do anything
to help with that?



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[RBW] Re: Low Trail Fork Experiment ... FYI only - Not intended to start another debate...

2012-07-22 Thread René Sterental
Hi Ben,

The Atlantis is still at the painters' so unfortunately I haven't tested it
yet. The Hunqapillar, though, I'm loving!

René

On Saturday, July 21, 2012, thebvo wrote:

 Hey René
 I'm curious if you've had time to mount you low trail fork to your
 Atlantis yet. I am bringing my Atlantis when I move to Japan in August and
 I'm thinking about looking for a local fella/ gal to whip one up for me,
 but I wanna hear your story first.
 Happy riding
 Ben

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[RBW] Re: Low Trail Fork Experiment ... FYI only - Not intended to start another debate...

2012-06-08 Thread dougP
One of our own, Rob Perks, was so taken by the low trail concept he
quit talking about it  started building low trail frames  forks:

http://oceanaircycles.com/

For perspective, Rob was an early adopter of the Roadeo and loves the
bike.  I've chased him up Saddleback in OC  Sulphur Mtn in Ventura,
so the Roadeo is pretty good country bike.

My 40 mm trail Atlantis fork pre-dates Rob's project but if the idea
is intriguing he's a guy you should talk to for a fork only or a
complete frame.  I have no business connection but we have both ridden
the So Cal Riv Group rides.

dougP

On Jun 6, 12:20 pm, William tapebu...@gmail.com wrote:
 Greg J, you've described it perfectly.  This is exactly my experience with
 my low trail (Rawland) and my high trail Rivs.  I like them all alot, both
 with and without heavy front loads.  I've never had a rear load on my low
 trail bike so I can't compare that.  They are decidedly different but
 equally great and confidence inspiring to me.



 On Tuesday, June 5, 2012 5:40:08 PM UTC-7, Greg J wrote:

  Rene,

  Thanks for your write up.  Very interesting.  I have some thoughts about
  the low-trail issue, FWIW.

  I definitely noticed a difference in handling between the low trail bike
  (a Toei I had for a while) and a Riv, which I assume may be attributable to
  the difference in trail.  The hard part is describing the difference in
  feel, and I thought I'd do my part to muddy the waters even more.  You say,
  where before I had to drive the bike, especially around turns, now all I
  have to do is think of where I want to go and the bike just responds
  effortlessly.  That's funny, because I would have described it the
  opposite way.  In my experience, the low trail bike will go exactly where
  you point the handlebar and will respond to small changes in your input.  A
  positive way to describe this would be it's responsive to steering
  input.  A negative description would be, it requires you to always be
  controlling the bike.  The high trail bike is more stable, in that once you
  set a course in a turn, it will keep to its natural arc. Positively, it's
  on rails, and negatively, it resists or fights your input.  I think the
  term automatic can be applied to both, and mean different thing, and that
  may be where some confusion arises.  Low trail is automatic in that it
  tracks more closely your steering input--it does what you're perhaps
  subconsciously doing to the bike.  High trail is automatic in that it (esp
  in turns) has its own arc that it will default to once you initiate the
  turn and it resists efforts to alter that course.  Does this make sense?

  Anyways, as most will agree, it's not a life-changing experience, and
  plenty of people (myself included) have toured on high-trail bikes with a
  front bag and survived.  But it's a significant enough difference, and I'm
  glad you embarked on your adventures.

  Greg- Hide quoted text -

 - Show quoted text -

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[RBW] Re: Low Trail Fork Experiment ... FYI only - Not intended to start another debate...

2012-06-06 Thread Philip Williamson
Thanks for the write-up on the low trail fork! I've had a Riv-trail 
Quickbeam since 2004, and a low-trail Ross since 1999 (I didn't know it was 
low-trail until about 2006), and find them both great-riding bikes. I would 
describe the steering response opposite to yours, though - the Quickbeam 
seems to steer best by pointing my hips, and the Ross seems to steer best 
by pointing the bars. I like them both, and I'm confident in putting a 
front load on either. Riding one and then immediately riding the other, 
there's a momentary dislocation, where the steering input almost seems 
opposite, and then by the time I turn into the street, everything is fine 
again. They're both fixed gears, which (in my experience) doesn't allow as 
fine a reading of handling as a coastable bike. 
Again, thanks for the excellent post on your motivation and your experience 
in getting the new forks built. I'm impressed.

 Philip

Philip Williamson
www.biketinker.com


On Tuesday, June 5, 2012 1:37:57 PM UTC-7, René wrote:

 Disclaimer:
  
 This is a very long post and I want to start by stating that I don't mean 
 to start another heated debate on high vs. low trail fork, or Jan vs. Grant 
 philosophies, etc. I just want to describe this experiment and its initial 
 results to the group so anyone thinking along the same lines has another 
 point of reference. I'll gladly answer any questions that are posted, 
 either privately or publicly but let's handle it as the controversial topic 
 it usually is. Also worth noting is that this is a modification I chose to 
 do on my own to my bikes and while Rivendell certainly supports the 
 exchange of information and knowledge about bikes, they certainly stand 
 proudly by their bikes and their design philosophy. This post is in no way 
 an attempt to challenge that. They are aware of my experiment.
  
 Ok, here I go...
  
 For a number of reasons that I can just summarize, in no particular order, 
 as the tendency of my Rivendell bikes to shimmy with any loads (especially 
 my Atlantis), my dislike for how they handle with any front loads 
 and especially heavier ones, as well as with heavy rear loads, all of which 
 magnify the tendency of the front steering to pull  and require 
 overcorrection when turning, as well as the interesting and very educating 
 online discussions and articles on bike geometry and fork geometry and its 
 effects on the handling characteristics of a bike, I decided to try it to 
 see for myself what the whole low trail geometry claims were about.
  I wasn't able or willing to go buy a new bike just to experiment, and 
 even if I did, there would be no way I could tell what the low trail fork 
 would do to the handling of my Rivendell bikes which, aside from the 
 nuances/issues stated above, I love. And yes, while I could 
 certainly adjust to all of these quirks, I just didn't like having them on 
 my bikes. The obvious solution recommended by some people on this group in 
 addition to several articles online pointed me to Tom Matchak in the East 
 Coast who had already built low trail forks for other Rivendell bikes. Tom 
 seemed to have a great reputation as a builder and immediately knew what 
 this was all about when I contacted him. Due to the long lead time to have 
 the low trail fork built for my Atlantis as was my original intention plus 
 a few additional considerations that came up as part of this process, like 
 the need to have the Atlantis repainted and why not, the Hunqapillar as 
 well (never did like that gray color much), I decided to take the risk of 
 ordering two low trail forks for both the Atlantis and the Hunqapillar as 
 these are the bikes I mainly ride loaded.
  
 I asked Jan Heine for his low trail recommendation as well as Tom Matchak 
 and they both came out with the same number: 40mm of trail, which requires 
 a rake of 70mm for 40/50 mm tires. On the Hunqapillar, the same 70mm rake 
 comes out to 42mm of trail. For comparison, the standard Rivendell fork for 
 the Atlantis has 45mm rake/65mm trail and the standard Hunqapillar fork has 
 50mm rake/63mm trail. I had to send several detailed measurements to Tom 
 Matchak so he could preserve the crown race to axle distances on both 
 bikes. He also specked cable guides for my dynamo lights as well as fender 
 attachments so I no longer need to fiddle with the darumas to mount the 
 front fenders and can screw in the fender directly to the underside of the 
 crown. Additionally, the fork for the Hunqapillar was spec'd with a Pacenti 
 MTB bi-plate crown to run the 50mm tires with 60 mm fenders and the fork 
 for the Altantis with a Long Shen A16 crown to be used with 40mm tires and 
 50 mm fenders. Regretfully but understandably so, I got a negative response 
 to my inquire at RBW on whether I could buy a pair of Rivendell crowns for 
 this project, so while none of these crowns is as beautiful as the original 
 Riv crowns, they're sort of Rivish, especially the A16. Both forks 

[RBW] Re: Low Trail Fork Experiment ... FYI only - Not intended to start another debate...

2012-06-06 Thread Mojo
Ha! DougP finally has come out of the low-trail closet! Thanks Rene
for your thoughtful review.

I too went low trail on my load carrying bike, in my case a Surly LHT
with a 72 degree head angle. Tom Matchak built a fork with 68mm of
rake compared to the original 45mm. That is nearly an inch of extra
rake. With 1.5inch tires, trail went from mid 60s to low 40s. Nothing
else changed in my experiment.

I found the new steering to be only subtly different, subtle but
distinct. As others have said, less wheel flop makes the bike handle
heavier front loads with more stability. The LHT does have a tendency
towards a light shimmy now that wasn't there before. It is easily
controled with a kneee against the top tube.  I put a 28mm tire on
this bike and did not like its handling at all, that felt very
skittish and unstable. Descending was different but not necessarily
better. Low trail was more responsive at speed but high trail feels
more stable. I don't think I descend faster with either setup.

So my impressions are both high and low trail handling have their
strengths and weaknesses. Low trail requires a larger tire and handles
front end loads well. High trail is quite fun with skinny (I use
27-33mm tires) and only a light front load or no front load. I just
carry stuff on them differently. That said, my 26inch AllRounder seems
to carry a moderate front load without any compaints. And I often
commute on my Quickbeam, a short flattish ride, with 5-15lbs in the
front basket with no bother.

I am glad I changed the LHT. It had an ugly dog-leg fork before and
the new handling is an improvement. I have no desire to change my
Rivendells. They ride wonderfully.

On Jun 5, 4:41 pm, dougP dougpn...@cox.net wrote:
 Rene:

 You are indeed brave to post about your experiment, and I hope
 everyone else reviews it thoughtfully.

 Something we all need to keep in mind is that as brilliant a designer
 as Grant is, every bike is the sum of a large number of compromises.
 The fewer the compromises, the more specialized and hence less
 versatile a bike is.  For me, one of the major attractions of
 Rivendell is the versatility of my Atlantis.  There just isn't any
 ride I would hesitate to do because my bike can't do that.

 This confidence building versatility has also led me to a lot of why
 not? adventures in loading, and I'm probably not alone here.  It
 would be impossible to design a single bike that would be equally
 competent handling all the possible combinations of front, rear, high,
  low loading.  Rivendell, IMHO, does it better than most, probably
 because they actually think about it, load their bikes  go banging
 about the hills in the real world.

 I took delivery of my Atlantis in early 03, and it's my go-to bike for
 everything.  Over the years, I came to prefer having my basic, daily
 stuff in a front bag, first a Riv Hobo, then an Acorn Boxy Rando
 (holds more).  It seemed that with the front bag fairly well stuffed,
 the bike had a bit of a wander when climbing at low speed, nothing as
 you describe but an irritating tendency to want to go somewhere else.
 I always dismissed it as the load and my inattentiveness.  Stumbling
 into some low trail discussion or article, it seemed like maybe there
 was room for improvement, at least to my tastes.

 When touring with a load, the bike was a bit dodgy with everything on
 the rear, the problem being an infrequent but unpredictable shimmy.
 Spreading the weight around among 4 bags restored stability.  Since my
 lodging load is 2 bags, on-tour ezperiments with them front vs rear
 showed front to be a more stable location.  However, the previously
 mentioned wandering was more annoying with all the weight up
 front.

 Tom Matchak also came to my attention courtesy another list member,
 and built the same fork for me.  Since my issue was not as dramatic as
 yours, I was only hoping to get the same stability with a front load
 that the bike had with no load.  The result meets expectations.  The
 40 mm trail is not a relgious experience but a rather subtle change
 that solved my personal problem without disturbing anything else about
 the bike.

 Note that I did not leap into this without a good deal of second
 guessing and self-argument.  The Atlantis is a great bike and I did
 not want to screw it up.  Fortunately, the results justified the
 deliberations.  It would not surprise me if another Riv owner rode my
 bike  hated it.  It just works for my  my quirky habits.

 Side bar re: shimmy.  If you get shimmy, don't assume the 40 mm trail
 is the cure.  On a recent S24O (2 bagger) I rode with the bags in
 front on the way out and the rear on the return.  On a straight,
 level, smooth bike trail at perhaps 12 mph, I got a nasty shimmy when
 I had to stop quickly, with the load in the rear.  After that, all the
 way home, I tried to induce it again with no success.  The typical
 tail wag when standing is still there.  I've been experimenting with
 trying to move the load 

Re: [RBW] Re: Low Trail Fork Experiment ... FYI only - Not intended to start another debate...

2012-06-06 Thread William
Greg J, you've described it perfectly.  This is exactly my experience with 
my low trail (Rawland) and my high trail Rivs.  I like them all alot, both 
with and without heavy front loads.  I've never had a rear load on my low 
trail bike so I can't compare that.  They are decidedly different but 
equally great and confidence inspiring to me.  

On Tuesday, June 5, 2012 5:40:08 PM UTC-7, Greg J wrote:

 Rene,

 Thanks for your write up.  Very interesting.  I have some thoughts about 
 the low-trail issue, FWIW.  

 I definitely noticed a difference in handling between the low trail bike 
 (a Toei I had for a while) and a Riv, which I assume may be attributable to 
 the difference in trail.  The hard part is describing the difference in 
 feel, and I thought I'd do my part to muddy the waters even more.  You say, 
 where before I had to drive the bike, especially around turns, now all I 
 have to do is think of where I want to go and the bike just responds 
 effortlessly.  That's funny, because I would have described it the 
 opposite way.  In my experience, the low trail bike will go exactly where 
 you point the handlebar and will respond to small changes in your input.  A 
 positive way to describe this would be it's responsive to steering 
 input.  A negative description would be, it requires you to always be 
 controlling the bike.  The high trail bike is more stable, in that once you 
 set a course in a turn, it will keep to its natural arc. Positively, it's 
 on rails, and negatively, it resists or fights your input.  I think the 
 term automatic can be applied to both, and mean different thing, and that 
 may be where some confusion arises.  Low trail is automatic in that it 
 tracks more closely your steering input--it does what you're perhaps 
 subconsciously doing to the bike.  High trail is automatic in that it (esp 
 in turns) has its own arc that it will default to once you initiate the 
 turn and it resists efforts to alter that course.  Does this make sense?

 Anyways, as most will agree, it's not a life-changing experience, and 
 plenty of people (myself included) have toured on high-trail bikes with a 
 front bag and survived.  But it's a significant enough difference, and I'm 
 glad you embarked on your adventures.

 Greg



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[RBW] Re: Low Trail Fork Experiment ... FYI only - Not intended to start another debate...

2012-06-05 Thread William
Well written and thoughtful treatment of the subject.  I'm super glad you 
are getting positive results for your substantial efforts.  And I for one 
think the Pacenti crown looks dynamite.  



On Tuesday, June 5, 2012 1:37:57 PM UTC-7, René wrote:

 Disclaimer:
  
 This is a very long post and I want to start by stating that I don't mean 
 to start another heated debate on high vs. low trail fork, or Jan vs. Grant 
 philosophies, etc. I just want to describe this experiment and its initial 
 results to the group so anyone thinking along the same lines has another 
 point of reference. I'll gladly answer any questions that are posted, 
 either privately or publicly but let's handle it as the controversial topic 
 it usually is. Also worth noting is that this is a modification I chose to 
 do on my own to my bikes and while Rivendell certainly supports the 
 exchange of information and knowledge about bikes, they certainly stand 
 proudly by their bikes and their design philosophy. This post is in no way 
 an attempt to challenge that. They are aware of my experiment.
  
 Ok, here I go...
  
 For a number of reasons that I can just summarize, in no particular order, 
 as the tendency of my Rivendell bikes to shimmy with any loads (especially 
 my Atlantis), my dislike for how they handle with any front loads 
 and especially heavier ones, as well as with heavy rear loads, all of which 
 magnify the tendency of the front steering to pull  and require 
 overcorrection when turning, as well as the interesting and very educating 
 online discussions and articles on bike geometry and fork geometry and its 
 effects on the handling characteristics of a bike, I decided to try it to 
 see for myself what the whole low trail geometry claims were about.
  I wasn't able or willing to go buy a new bike just to experiment, and 
 even if I did, there would be no way I could tell what the low trail fork 
 would do to the handling of my Rivendell bikes which, aside from the 
 nuances/issues stated above, I love. And yes, while I could 
 certainly adjust to all of these quirks, I just didn't like having them on 
 my bikes. The obvious solution recommended by some people on this group in 
 addition to several articles online pointed me to Tom Matchak in the East 
 Coast who had already built low trail forks for other Rivendell bikes. Tom 
 seemed to have a great reputation as a builder and immediately knew what 
 this was all about when I contacted him. Due to the long lead time to have 
 the low trail fork built for my Atlantis as was my original intention plus 
 a few additional considerations that came up as part of this process, like 
 the need to have the Atlantis repainted and why not, the Hunqapillar as 
 well (never did like that gray color much), I decided to take the risk of 
 ordering two low trail forks for both the Atlantis and the Hunqapillar as 
 these are the bikes I mainly ride loaded.
  
 I asked Jan Heine for his low trail recommendation as well as Tom Matchak 
 and they both came out with the same number: 40mm of trail, which requires 
 a rake of 70mm for 40/50 mm tires. On the Hunqapillar, the same 70mm rake 
 comes out to 42mm of trail. For comparison, the standard Rivendell fork for 
 the Atlantis has 45mm rake/65mm trail and the standard Hunqapillar fork has 
 50mm rake/63mm trail. I had to send several detailed measurements to Tom 
 Matchak so he could preserve the crown race to axle distances on both 
 bikes. He also specked cable guides for my dynamo lights as well as fender 
 attachments so I no longer need to fiddle with the darumas to mount the 
 front fenders and can screw in the fender directly to the underside of the 
 crown. Additionally, the fork for the Hunqapillar was spec'd with a Pacenti 
 MTB bi-plate crown to run the 50mm tires with 60 mm fenders and the fork 
 for the Altantis with a Long Shen A16 crown to be used with 40mm tires and 
 50 mm fenders. Regretfully but understandably so, I got a negative response 
 to my inquire at RBW on whether I could buy a pair of Rivendell crowns for 
 this project, so while none of these crowns is as beautiful as the original 
 Riv crowns, they're sort of Rivish, especially the A16. Both forks were 
 also spec'd with the usual set braze-ons for the normal array of racks 
 including the Nova and Duo Lowrider racks. Tom put these braze-ons on the 
 front of the fork instead of on the back where the Riv forks have them with 
 the effect that it will be easier to level them properly. I didn't ask for 
 the braze-ons on top of the crown as I have no use for them.
  
 After the long expected wait (this whole project started in december of 
 2011 and it took until febrary for the orders and details for both forks to 
 be completed. Tom was going to schedule them to be built in March anyway 
 and was done in April. He shipped both forks to the local painter Keven 
 recommended (DD cycles); for some reason I never understood, he refused 
 from the start 

[RBW] Re: Low Trail Fork Experiment ... FYI only - Not intended to start another debate...

2012-06-05 Thread Allan in Portland
Kudos to you for doing what you wanted, how you wanted. :-)

And thanks for sharing the thorough description with the rest of us.

...but not liking the Hunq gray? Really? We have to talk. ;-)

Regards,
-Allan

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[RBW] Re: Low Trail Fork Experiment ... FYI only - Not intended to start another debate...

2012-06-05 Thread Justin August
Wow.
This sounds like an amazing project. It's nice to know that the bikes 
retain the positive aspects of their handling without adding many (if 
any) negative aspects when going to low-trail. I'm super tempted to try the 
same for my Bleriot!

-J

On Tuesday, June 5, 2012 4:37:57 PM UTC-4, René wrote:

 Disclaimer:
  
 This is a very long post and I want to start by stating that I don't mean 
 to start another heated debate on high vs. low trail fork, or Jan vs. Grant 
 philosophies, etc. I just want to describe this experiment and its initial 
 results to the group so anyone thinking along the same lines has another 
 point of reference. I'll gladly answer any questions that are posted, 
 either privately or publicly but let's handle it as the controversial topic 
 it usually is. Also worth noting is that this is a modification I chose to 
 do on my own to my bikes and while Rivendell certainly supports the 
 exchange of information and knowledge about bikes, they certainly stand 
 proudly by their bikes and their design philosophy. This post is in no way 
 an attempt to challenge that. They are aware of my experiment.
  
 Ok, here I go...
  
 For a number of reasons that I can just summarize, in no particular order, 
 as the tendency of my Rivendell bikes to shimmy with any loads (especially 
 my Atlantis), my dislike for how they handle with any front loads 
 and especially heavier ones, as well as with heavy rear loads, all of which 
 magnify the tendency of the front steering to pull  and require 
 overcorrection when turning, as well as the interesting and very educating 
 online discussions and articles on bike geometry and fork geometry and its 
 effects on the handling characteristics of a bike, I decided to try it to 
 see for myself what the whole low trail geometry claims were about.
  I wasn't able or willing to go buy a new bike just to experiment, and 
 even if I did, there would be no way I could tell what the low trail fork 
 would do to the handling of my Rivendell bikes which, aside from the 
 nuances/issues stated above, I love. And yes, while I could 
 certainly adjust to all of these quirks, I just didn't like having them on 
 my bikes. The obvious solution recommended by some people on this group in 
 addition to several articles online pointed me to Tom Matchak in the East 
 Coast who had already built low trail forks for other Rivendell bikes. Tom 
 seemed to have a great reputation as a builder and immediately knew what 
 this was all about when I contacted him. Due to the long lead time to have 
 the low trail fork built for my Atlantis as was my original intention plus 
 a few additional considerations that came up as part of this process, like 
 the need to have the Atlantis repainted and why not, the Hunqapillar as 
 well (never did like that gray color much), I decided to take the risk of 
 ordering two low trail forks for both the Atlantis and the Hunqapillar as 
 these are the bikes I mainly ride loaded.
  
 I asked Jan Heine for his low trail recommendation as well as Tom Matchak 
 and they both came out with the same number: 40mm of trail, which requires 
 a rake of 70mm for 40/50 mm tires. On the Hunqapillar, the same 70mm rake 
 comes out to 42mm of trail. For comparison, the standard Rivendell fork for 
 the Atlantis has 45mm rake/65mm trail and the standard Hunqapillar fork has 
 50mm rake/63mm trail. I had to send several detailed measurements to Tom 
 Matchak so he could preserve the crown race to axle distances on both 
 bikes. He also specked cable guides for my dynamo lights as well as fender 
 attachments so I no longer need to fiddle with the darumas to mount the 
 front fenders and can screw in the fender directly to the underside of the 
 crown. Additionally, the fork for the Hunqapillar was spec'd with a Pacenti 
 MTB bi-plate crown to run the 50mm tires with 60 mm fenders and the fork 
 for the Altantis with a Long Shen A16 crown to be used with 40mm tires and 
 50 mm fenders. Regretfully but understandably so, I got a negative response 
 to my inquire at RBW on whether I could buy a pair of Rivendell crowns for 
 this project, so while none of these crowns is as beautiful as the original 
 Riv crowns, they're sort of Rivish, especially the A16. Both forks were 
 also spec'd with the usual set braze-ons for the normal array of racks 
 including the Nova and Duo Lowrider racks. Tom put these braze-ons on the 
 front of the fork instead of on the back where the Riv forks have them with 
 the effect that it will be easier to level them properly. I didn't ask for 
 the braze-ons on top of the crown as I have no use for them.
  
 After the long expected wait (this whole project started in december of 
 2011 and it took until febrary for the orders and details for both forks to 
 be completed. Tom was going to schedule them to be built in March anyway 
 and was done in April. He shipped both forks to the local painter Keven 
 recommended (DD cycles); for some 

[RBW] Re: Low Trail Fork Experiment ... FYI only - Not intended to start another debate...

2012-06-05 Thread dougP
Rene:

You are indeed brave to post about your experiment, and I hope
everyone else reviews it thoughtfully.

Something we all need to keep in mind is that as brilliant a designer
as Grant is, every bike is the sum of a large number of compromises.
The fewer the compromises, the more specialized and hence less
versatile a bike is.  For me, one of the major attractions of
Rivendell is the versatility of my Atlantis.  There just isn't any
ride I would hesitate to do because my bike can't do that.

This confidence building versatility has also led me to a lot of why
not? adventures in loading, and I'm probably not alone here.  It
would be impossible to design a single bike that would be equally
competent handling all the possible combinations of front, rear, high,
 low loading.  Rivendell, IMHO, does it better than most, probably
because they actually think about it, load their bikes  go banging
about the hills in the real world.

I took delivery of my Atlantis in early 03, and it's my go-to bike for
everything.  Over the years, I came to prefer having my basic, daily
stuff in a front bag, first a Riv Hobo, then an Acorn Boxy Rando
(holds more).  It seemed that with the front bag fairly well stuffed,
the bike had a bit of a wander when climbing at low speed, nothing as
you describe but an irritating tendency to want to go somewhere else.
I always dismissed it as the load and my inattentiveness.  Stumbling
into some low trail discussion or article, it seemed like maybe there
was room for improvement, at least to my tastes.

When touring with a load, the bike was a bit dodgy with everything on
the rear, the problem being an infrequent but unpredictable shimmy.
Spreading the weight around among 4 bags restored stability.  Since my
lodging load is 2 bags, on-tour ezperiments with them front vs rear
showed front to be a more stable location.  However, the previously
mentioned wandering was more annoying with all the weight up
front.

Tom Matchak also came to my attention courtesy another list member,
and built the same fork for me.  Since my issue was not as dramatic as
yours, I was only hoping to get the same stability with a front load
that the bike had with no load.  The result meets expectations.  The
40 mm trail is not a relgious experience but a rather subtle change
that solved my personal problem without disturbing anything else about
the bike.

Note that I did not leap into this without a good deal of second
guessing and self-argument.  The Atlantis is a great bike and I did
not want to screw it up.  Fortunately, the results justified the
deliberations.  It would not surprise me if another Riv owner rode my
bike  hated it.  It just works for my  my quirky habits.

Side bar re: shimmy.  If you get shimmy, don't assume the 40 mm trail
is the cure.  On a recent S24O (2 bagger) I rode with the bags in
front on the way out and the rear on the return.  On a straight,
level, smooth bike trail at perhaps 12 mph, I got a nasty shimmy when
I had to stop quickly, with the load in the rear.  After that, all the
way home, I tried to induce it again with no success.  The typical
tail wag when standing is still there.  I've been experimenting with
trying to move the load lower  as far forward as practical.  I may
need a change of rack (currently using the Nitto Big Back rack) to get
things where I want them.

Funny that you want to paint both bikes.  I really like the gray 
kidney bean red Hunq paint scheme, and have considered doing that on
my Atlantis.  It's spent enough time traveling that I'm thinking new
paint for it's 10th birthday would be nice.  Of course, my wife tells
me it's you; sorta old  beat-up looking.  I think there's a
complement in there but I could be just wishing.

dougP




On Jun 5, 1:37 pm, René Sterental orthie...@gmail.com wrote:
 Disclaimer:

 This is a very long post and I want to start by stating that I don't mean
 to start another heated debate on high vs. low trail fork, or Jan vs. Grant
 philosophies, etc. I just want to describe this experiment and its initial
 results to the group so anyone thinking along the same lines has another
 point of reference. I'll gladly answer any questions that are posted,
 either privately or publicly but let's handle it as the controversial topic
 it usually is. Also worth noting is that this is a modification I chose to
 do on my own to my bikes and while Rivendell certainly supports the
 exchange of information and knowledge about bikes, they certainly stand
 proudly by their bikes and their design philosophy. This post is in no way
 an attempt to challenge that. They are aware of my experiment.

 Ok, here I go...

 For a number of reasons that I can just summarize, in no particular order,
 as the tendency of my Rivendell bikes to shimmy with any loads (especially
 my Atlantis), my dislike for how they handle with any front loads
 and especially heavier ones, as well as with heavy rear loads, all of which
 magnify the tendency of the front steering to 

Re: [RBW] Re: Low Trail Fork Experiment ... FYI only - Not intended to start another debate...

2012-06-05 Thread Steve Palincsar
On Tue, 2012-06-05 at 15:41 -0700, dougP wrote:
 
 Something we all need to keep in mind is that as brilliant a designer
 as Grant is, every bike is the sum of a large number of compromises.
 The fewer the compromises, the more specialized and hence less
 versatile a bike is.  For me, one of the major attractions of
 Rivendell is the versatility of my Atlantis.  There just isn't any
 ride I would hesitate to do because my bike can't do that.

But Grant is not a brilliant experimenter.  When he did the low trail
fork experiment in Riv Reader he neglected to factor in one highly
significant variable (especially highly significant in the context of
low trail): tire width.  He tried low trail with narrow tires and did
not like it.  Although it was pointed out to him that wide tires add
pneumatic trail and one point of lowering geometric trail is to maintain
the balance and keep total trail reasonable, by that time his mind was
made up and he refused to try wider tires.



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[RBW] Re: Low Trail Fork Experiment ... FYI only - Not intended to start another debate...

2012-06-05 Thread C.J. Filip
Rene,

Can you comment on toe overlap between the different forks on your
Atlantis.  It looks like you ride a 58cm and have a small amount of
overlap here: http://www.flickr.com/photos/orthie251/6617229451/in/photostream/.
Very curious to know if the low-trail fork eliminates any TCO as I'm
casually considering going up to a 58 from 56 Atlantis.

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Re: [RBW] Re: Low Trail Fork Experiment ... FYI only - Not intended to start another debate...

2012-06-05 Thread René Sterental
Thank you all for your comments and feedback, and for appreciating my
intent in this post.

@C.J.: I'll comment on the toe overlap when I get the Atlantis with the low
trail fork installed. I have no toe overlap on the Hunqapillar.

@Patrick: Yes, I ride with my bars higher than the saddle and find my
hands, neck and shoulder pain go away in a more upright position. Now with
the Bosco bars I've found Nirvana... and you may be right, maybe that has
an impact on the front tendency to wander. I didn't, however, change any
other aspect of my  riding position or bike components when I switched the
forks.

@ Allan: Yeah... I don't really like the gray color; it's the only color in
Riv's bike pallete that has refused to grow on me over time. Now I have to
make up my mind if I really want to paint it silver or go with another
color. The Atlantis, however, I'm keeping in its original color. I don't
think I could come up with a better one for it. It's part of its soul... :-)

René

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Re: [RBW] Re: Low Trail Fork Experiment ... FYI only - Not intended to start another debate...

2012-06-05 Thread Greg J
Rene,

Thanks for your write up.  Very interesting.  I have some thoughts about 
the low-trail issue, FWIW.  

I definitely noticed a difference in handling between the low trail bike (a 
Toei I had for a while) and a Riv, which I assume may be attributable to 
the difference in trail.  The hard part is describing the difference in 
feel, and I thought I'd do my part to muddy the waters even more.  You say, 
where before I had to drive the bike, especially around turns, now all I 
have to do is think of where I want to go and the bike just responds 
effortlessly.  That's funny, because I would have described it the 
opposite way.  In my experience, the low trail bike will go exactly where 
you point the handlebar and will respond to small changes in your input.  A 
positive way to describe this would be it's responsive to steering 
input.  A negative description would be, it requires you to always be 
controlling the bike.  The high trail bike is more stable, in that once you 
set a course in a turn, it will keep to its natural arc. Positively, it's 
on rails, and negatively, it resists or fights your input.  I think the 
term automatic can be applied to both, and mean different thing, and that 
may be where some confusion arises.  Low trail is automatic in that it 
tracks more closely your steering input--it does what you're perhaps 
subconsciously doing to the bike.  High trail is automatic in that it (esp 
in turns) has its own arc that it will default to once you initiate the 
turn and it resists efforts to alter that course.  Does this make sense?

Anyways, as most will agree, it's not a life-changing experience, and 
plenty of people (myself included) have toured on high-trail bikes with a 
front bag and survived.  But it's a significant enough difference, and I'm 
glad you embarked on your adventures.

Greg

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[RBW] Re: Low Trail Fork Experiment ... FYI only - Not intended to start another debate...

2012-06-05 Thread Michael_S
finally came out of the closet.. eh Doug.
My personal experience is that without the front load the Riv is more 
stable and funner to ride.  Adding a medium  weight upfront/above wheel 
load changes the equation. 

~mike



On Tuesday, June 5, 2012 3:41:20 PM UTC-7, dougP wrote:

 Rene: 

 You are indeed brave to post about your experiment, and I hope 
 everyone else reviews it thoughtfully. 

 Something we all need to keep in mind is that as brilliant a designer 
 as Grant is, every bike is the sum of a large number of compromises. 
 The fewer the compromises, the more specialized and hence less 
 versatile a bike is.  For me, one of the major attractions of 
 Rivendell is the versatility of my Atlantis.  There just isn't any 
 ride I would hesitate to do because my bike can't do that. 

 This confidence building versatility has also led me to a lot of why 
 not? adventures in loading, and I'm probably not alone here.  It 
 would be impossible to design a single bike that would be equally 
 competent handling all the possible combinations of front, rear, high, 
  low loading.  Rivendell, IMHO, does it better than most, probably 
 because they actually think about it, load their bikes  go banging 
 about the hills in the real world. 

 I took delivery of my Atlantis in early 03, and it's my go-to bike for 
 everything.  Over the years, I came to prefer having my basic, daily 
 stuff in a front bag, first a Riv Hobo, then an Acorn Boxy Rando 
 (holds more).  It seemed that with the front bag fairly well stuffed, 
 the bike had a bit of a wander when climbing at low speed, nothing as 
 you describe but an irritating tendency to want to go somewhere else. 
 I always dismissed it as the load and my inattentiveness.  Stumbling 
 into some low trail discussion or article, it seemed like maybe there 
 was room for improvement, at least to my tastes. 

 When touring with a load, the bike was a bit dodgy with everything on 
 the rear, the problem being an infrequent but unpredictable shimmy. 
 Spreading the weight around among 4 bags restored stability.  Since my 
 lodging load is 2 bags, on-tour ezperiments with them front vs rear 
 showed front to be a more stable location.  However, the previously 
 mentioned wandering was more annoying with all the weight up 
 front. 

 Tom Matchak also came to my attention courtesy another list member, 
 and built the same fork for me.  Since my issue was not as dramatic as 
 yours, I was only hoping to get the same stability with a front load 
 that the bike had with no load.  The result meets expectations.  The 
 40 mm trail is not a relgious experience but a rather subtle change 
 that solved my personal problem without disturbing anything else about 
 the bike. 

 Note that I did not leap into this without a good deal of second 
 guessing and self-argument.  The Atlantis is a great bike and I did 
 not want to screw it up.  Fortunately, the results justified the 
 deliberations.  It would not surprise me if another Riv owner rode my 
 bike  hated it.  It just works for my  my quirky habits. 

 Side bar re: shimmy.  If you get shimmy, don't assume the 40 mm trail 
 is the cure.  On a recent S24O (2 bagger) I rode with the bags in 
 front on the way out and the rear on the return.  On a straight, 
 level, smooth bike trail at perhaps 12 mph, I got a nasty shimmy when 
 I had to stop quickly, with the load in the rear.  After that, all the 
 way home, I tried to induce it again with no success.  The typical 
 tail wag when standing is still there.  I've been experimenting with 
 trying to move the load lower  as far forward as practical.  I may 
 need a change of rack (currently using the Nitto Big Back rack) to get 
 things where I want them. 

 Funny that you want to paint both bikes.  I really like the gray  
 kidney bean red Hunq paint scheme, and have considered doing that on 
 my Atlantis.  It's spent enough time traveling that I'm thinking new 
 paint for it's 10th birthday would be nice.  Of course, my wife tells 
 me it's you; sorta old  beat-up looking.  I think there's a 
 complement in there but I could be just wishing. 

 dougP 




 On Jun 5, 1:37 pm, René Sterental orthie...@gmail.com wrote: 
  Disclaimer: 
  
  This is a very long post and I want to start by stating that I don't 
 mean 
  to start another heated debate on high vs. low trail fork, or Jan vs. 
 Grant 
  philosophies, etc. I just want to describe this experiment and its 
 initial 
  results to the group so anyone thinking along the same lines has another 
  point of reference. I'll gladly answer any questions that are posted, 
  either privately or publicly but let's handle it as the controversial 
 topic 
  it usually is. Also worth noting is that this is a modification I chose 
 to 
  do on my own to my bikes and while Rivendell certainly supports the 
  exchange of information and knowledge about bikes, they certainly stand 
  proudly by their bikes and their design philosophy. This post 

Re: [RBW] Re: Low Trail Fork Experiment ... FYI only - Not intended to start another debate...

2012-06-05 Thread Tim McNamara
On Jun 5, 2012, at 6:27 PM, Steve Palincsar wrote:
 On Tue, 2012-06-05 at 15:41 -0700, dougP wrote:
 
 Something we all need to keep in mind is that as brilliant a designer
 as Grant is, every bike is the sum of a large number of compromises.
 The fewer the compromises, the more specialized and hence less
 versatile a bike is.  For me, one of the major attractions of
 Rivendell is the versatility of my Atlantis.  There just isn't any
 ride I would hesitate to do because my bike can't do that.
 
 But Grant is not a brilliant experimenter.  When he did the low trail
 fork experiment in Riv Reader he neglected to factor in one highly
 significant variable (especially highly significant in the context of
 low trail): tire width.  He tried low trail with narrow tires and did
 not like it.  Although it was pointed out to him that wide tires add
 pneumatic trail and one point of lowering geometric trail is to maintain
 the balance and keep total trail reasonable, by that time his mind was
 made up and he refused to try wider tires.

There are many factors that go into bike feel.  Trail is only one of them and 
perhaps not even the most important.  Trying to boil down how bikes ride to the 
notions of low trail vs high trail or front-loading vs rear-loading or 
high BB vs low BB etc. is something of a fool's errand.  No one factor 
dominates.  A high trail bike with a 75 degree head tube will feel different 
than a bike with same amount of trail and a 72 degree head tube; ditto low 
trail bikes.  The math that describes a bike's handling is very complicated, 
not actually solved yet, and is right up there with jet aircraft dynamics.  The 
important thing IMHO is that people find bikes that ride the way they like 
bikes to ride.  That way they will ride more and will have fun.  It's great 
that there are a variety of bike designs out there.  I am glad the OP had a 
successful experiment and has found something that works better for him.

To each their own.  I have not liked any low trail bikes I have ridden.  Some 
people love them and, who knows, I might ride one some day that I really like- 
there is no reason to rule that out.  Jan is eloquent in his praises of them.  
I've never experienced the problems with high trail bikes that he and some 
other folks report.  My high trail bikes don't pull in turns and I can 
change my line in the middle of a corner at will, maybe the result of many 
miles spent racing road races and criteriums on high trail bikes- I steer a 
bike with the saddle as much or more than the handlebars.  What made me think 
about matching riding style to bike feel is that I have one bike- which I built 
and which came out with unintentionally high trail, due to the head tube 
steepening when I brazed up the frame- that feels dramatically better if I lean 
aggressively to corner like I am racing and feels weird if I try to corner by 
steering with the handlebars.  And some things are even confusing- track bikes 
tend to have high trail (they are ridden pretty much in a straight line around 
the banking of a velodrome) and yet are typically praised for their nimbleness 
when, according to trail theory, they shouldn't be.

The danger in any discussion comes when we confuse subjective preference with 
objective fact, and especially getting really attached to the factuality of 
one's beliefs and preferences- whether about bikes, politics or religion.

FWIW my 1996 All-Rounder is a great handling bike with a front load (about 10 
lbs has been the maximum) or a rear load (about 18 lbs in a Carradice Nelson), 
on 26 x 1.25 Paselas.  I don't even know for sure whether it's high or low 
trail; my best estimate using straightedges ad tape and rulers and drawings on 
the floor is that it's about 55 mm with the current tires, so medium trail.  
Bigger tires would make it higher trail, smaller tires would make it lower 
trail.  The Paselas at 1.25 seem to be the sweet spot with that bike.  It's 
sort of like my old Volvo 240- really comfortable, sportier than you'd expect 
and astonishingly nimble.  The best handling bike I have ever ridden is my 
high trail  Ritchey with 700 x 25 tires, almost completely telepathic when 
riding it.

So, I say ride whatcha like and works for you.  The OP made a very clear 
discovery for himself with his bikes that will be very useful to him.  Other 
people may find it useful and I say bravo for posting it.  


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[RBW] Re: Low Trail Fork Experiment ... FYI only - Not intended to start another debate...

2012-06-05 Thread Will
Interesting write up.

I noticed in the pictures that your load is fairly forward relative to the 
front axle. I am assuming that is so because you've chosen swept back bars 
(those new Boscos) and your stem is therefore necessarily longer than 
normal to compensate. The long stem means the front bag is also pushed 
forward. 

It is an interesting predicament. 

Will



On Tuesday, June 5, 2012 3:37:57 PM UTC-5, René wrote:

 Disclaimer:
  
 This is a very long post and I want to start by stating that I don't mean 
 to start another heated debate on high vs. low trail fork, or Jan vs. Grant 
 philosophies, etc. I just want to describe this experiment and its initial 
 results to the group so anyone thinking along the same lines has another 
 point of reference. I'll gladly answer any questions that are posted, 
 either privately or publicly but let's handle it as the controversial topic 
 it usually is. Also worth noting is that this is a modification I chose to 
 do on my own to my bikes and while Rivendell certainly supports the 
 exchange of information and knowledge about bikes, they certainly stand 
 proudly by their bikes and their design philosophy. This post is in no way 
 an attempt to challenge that. They are aware of my experiment.
  
 Ok, here I go...
  
 For a number of reasons that I can just summarize, in no particular order, 
 as the tendency of my Rivendell bikes to shimmy with any loads (especially 
 my Atlantis), my dislike for how they handle with any front loads 
 and especially heavier ones, as well as with heavy rear loads, all of which 
 magnify the tendency of the front steering to pull  and require 
 overcorrection when turning, as well as the interesting and very educating 
 online discussions and articles on bike geometry and fork geometry and its 
 effects on the handling characteristics of a bike, I decided to try it to 
 see for myself what the whole low trail geometry claims were about.
  I wasn't able or willing to go buy a new bike just to experiment, and 
 even if I did, there would be no way I could tell what the low trail fork 
 would do to the handling of my Rivendell bikes which, aside from the 
 nuances/issues stated above, I love. And yes, while I could 
 certainly adjust to all of these quirks, I just didn't like having them on 
 my bikes. The obvious solution recommended by some people on this group in 
 addition to several articles online pointed me to Tom Matchak in the East 
 Coast who had already built low trail forks for other Rivendell bikes. Tom 
 seemed to have a great reputation as a builder and immediately knew what 
 this was all about when I contacted him. Due to the long lead time to have 
 the low trail fork built for my Atlantis as was my original intention plus 
 a few additional considerations that came up as part of this process, like 
 the need to have the Atlantis repainted and why not, the Hunqapillar as 
 well (never did like that gray color much), I decided to take the risk of 
 ordering two low trail forks for both the Atlantis and the Hunqapillar as 
 these are the bikes I mainly ride loaded.
  
 I asked Jan Heine for his low trail recommendation as well as Tom Matchak 
 and they both came out with the same number: 40mm of trail, which requires 
 a rake of 70mm for 40/50 mm tires. On the Hunqapillar, the same 70mm rake 
 comes out to 42mm of trail. For comparison, the standard Rivendell fork for 
 the Atlantis has 45mm rake/65mm trail and the standard Hunqapillar fork has 
 50mm rake/63mm trail. I had to send several detailed measurements to Tom 
 Matchak so he could preserve the crown race to axle distances on both 
 bikes. He also specked cable guides for my dynamo lights as well as fender 
 attachments so I no longer need to fiddle with the darumas to mount the 
 front fenders and can screw in the fender directly to the underside of the 
 crown. Additionally, the fork for the Hunqapillar was spec'd with a Pacenti 
 MTB bi-plate crown to run the 50mm tires with 60 mm fenders and the fork 
 for the Altantis with a Long Shen A16 crown to be used with 40mm tires and 
 50 mm fenders. Regretfully but understandably so, I got a negative response 
 to my inquire at RBW on whether I could buy a pair of Rivendell crowns for 
 this project, so while none of these crowns is as beautiful as the original 
 Riv crowns, they're sort of Rivish, especially the A16. Both forks were 
 also spec'd with the usual set braze-ons for the normal array of racks 
 including the Nova and Duo Lowrider racks. Tom put these braze-ons on the 
 front of the fork instead of on the back where the Riv forks have them with 
 the effect that it will be easier to level them properly. I didn't ask for 
 the braze-ons on top of the crown as I have no use for them.
  
 After the long expected wait (this whole project started in december of 
 2011 and it took until febrary for the orders and details for both forks to 
 be completed. Tom was going to schedule them to be built in 

[RBW] Re: Low Trail Fork Experiment ... FYI only - Not intended to start another debate...

2012-06-05 Thread dougP
Tim mentioned The important thing IMHO is that people find bikes that
ride the way they like bikes to ride.  That way they will ride more
and will have fun.

That is what it's all about.  Whatever works for you may be vastly
different than what works for me.  Rider weight, riding style and how
the bike is loaded have way more affect than subtle geometric
differences, IMHO.  I had over 30,000 miles on the Atlantis before I
even dreamed of changing the fork, and even then argued with myself
for at least a year.  The issue evolved into a curiousity about what
if? and of course I had the stock fork in case my ideas were proven
wrong.

Like the book says, Just Ride.

dougP

On Jun 5, 6:51 pm, Tim McNamara tim...@bitstream.net wrote:
 On Jun 5, 2012, at 6:27 PM, Steve Palincsar wrote:





  On Tue, 2012-06-05 at 15:41 -0700, dougP wrote:

  Something we all need to keep in mind is that as brilliant a designer
  as Grant is, every bike is the sum of a large number of compromises.
  The fewer the compromises, the more specialized and hence less
  versatile a bike is.  For me, one of the major attractions of
  Rivendell is the versatility of my Atlantis.  There just isn't any
  ride I would hesitate to do because my bike can't do that.

  But Grant is not a brilliant experimenter.  When he did the low trail
  fork experiment in Riv Reader he neglected to factor in one highly
  significant variable (especially highly significant in the context of
  low trail): tire width.  He tried low trail with narrow tires and did
  not like it.  Although it was pointed out to him that wide tires add
  pneumatic trail and one point of lowering geometric trail is to maintain
  the balance and keep total trail reasonable, by that time his mind was
  made up and he refused to try wider tires.

 There are many factors that go into bike feel.  Trail is only one of them and 
 perhaps not even the most important.  Trying to boil down how bikes ride to 
 the notions of low trail vs high trail or front-loading vs 
 rear-loading or high BB vs low BB etc. is something of a fool's errand. 
  No one factor dominates.  A high trail bike with a 75 degree head tube 
 will feel different than a bike with same amount of trail and a 72 degree 
 head tube; ditto low trail bikes.  The math that describes a bike's 
 handling is very complicated, not actually solved yet, and is right up there 
 with jet aircraft dynamics.  The important thing IMHO is that people find 
 bikes that ride the way they like bikes to ride.  That way they will ride 
 more and will have fun.  It's great that there are a variety of bike designs 
 out there.  I am glad the OP had a successful experiment and has found 
 something that works better for him.

 To each their own.  I have not liked any low trail bikes I have ridden.  
 Some people love them and, who knows, I might ride one some day that I really 
 like- there is no reason to rule that out.  Jan is eloquent in his praises of 
 them.  I've never experienced the problems with high trail bikes that he 
 and some other folks report.  My high trail bikes don't pull in turns and 
 I can change my line in the middle of a corner at will, maybe the result of 
 many miles spent racing road races and criteriums on high trail bikes- I 
 steer a bike with the saddle as much or more than the handlebars.  What made 
 me think about matching riding style to bike feel is that I have one bike- 
 which I built and which came out with unintentionally high trail, due to the 
 head tube steepening when I brazed up the frame- that feels dramatically 
 better if I lean aggressively to corner like I am racing and feels weird if I 
 try to corner by steering with the handlebars.  And some things are even 
 confusing- track bikes tend to have high trail (they are ridden pretty much 
 in a straight line around the banking of a velodrome) and yet are typically 
 praised for their nimbleness when, according to trail theory, they shouldn't 
 be.

 The danger in any discussion comes when we confuse subjective preference with 
 objective fact, and especially getting really attached to the factuality of 
 one's beliefs and preferences- whether about bikes, politics or religion.

 FWIW my 1996 All-Rounder is a great handling bike with a front load (about 10 
 lbs has been the maximum) or a rear load (about 18 lbs in a Carradice 
 Nelson), on 26 x 1.25 Paselas.  I don't even know for sure whether it's 
 high or low trail; my best estimate using straightedges ad tape and 
 rulers and drawings on the floor is that it's about 55 mm with the current 
 tires, so medium trail.  Bigger tires would make it higher trail, smaller 
 tires would make it lower trail.  The Paselas at 1.25 seem to be the sweet 
 spot with that bike.  It's sort of like my old Volvo 240- really comfortable, 
 sportier than you'd expect and astonishingly nimble.  The best handling bike 
 I have ever ridden is my high trail  Ritchey with 700 x 25 tires, almost 
 completely telepathic 

[RBW] Re: Low Trail Fork Experiment ... FYI only - Not intended to start another debate...

2012-06-05 Thread René Sterental
Will,

You are right about the Pass  Stow rack putting the load high and forward.
I liked it and wanted to try it since it allows both the Porteur bag type,
front panniers and any other load that requires a flat surface which also
works great for baskets. It fits very well with the Bosco bars, but one had
nothing to do with the other. I may keep them or not, based on hoe they
behave after trying different loads, particularly on the Porteur bag.

I will also be testing the regular Nitto mini with and without Lowriders,
as well as the Platrack with its matching bag. Lots of things to test over
the course of the next several months...

René

On Tuesday, June 5, 2012, Will wrote:

 Interesting write up.

 I noticed in the pictures that your load is fairly forward relative to the
 front axle. I am assuming that is so because you've chosen swept back bars
 (those new Boscos) and your stem is therefore necessarily longer than
 normal to compensate. The long stem means the front bag is also pushed
 forward.

 It is an interesting predicament.

 Will




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[RBW] Re: Low Trail Fork Experiment ... FYI only - Not intended to start another debate...

2012-06-05 Thread franklyn
Rene,

Another member JimG and I both did something in the same vein. Jim had a 80's 
Trek 
400http://www.flickr.com/photos/jimg/5646813626/in/set-72157618420547360/that 
he turned into a bike with low trail front end geometry using a 
Kogswell fork. I did the same to my 80's Specialized 
Sequoiahttp://bikegarage.blogspot.com/2012/02/low-trail-specialized-sequoia.html,
 
also with a Kogswell fork and change the wheels to 650b size. I did it 
because the two other bikes I had are ones with mid- and low-trail front 
end geometry, and I found that I prefer that geometry especially in 
descents and climb, and with heavy front load. I totally relate to the 
front load disappearing experience with my Kogswell carrying a heavy load 
on its porteur rack. 

Franklyn

On Tuesday, June 5, 2012 8:45:09 PM UTC-7, René wrote:

 Will,

 You are right about the Pass  Stow rack putting the load high and 
 forward. I liked it and wanted to try it since it allows both the Porteur 
 bag type, front panniers and any other load that requires a flat surface 
 which also works great for baskets. It fits very well with the Bosco bars, 
 but one had nothing to do with the other. I may keep them or not, based on 
 hoe they behave after trying different loads, particularly on the Porteur 
 bag. 

 I will also be testing the regular Nitto mini with and without Lowriders, 
 as well as the Platrack with its matching bag. Lots of things to test over 
 the course of the next several months...

 René 

 On Tuesday, June 5, 2012, Will wrote:

 Interesting write up.

 I noticed in the pictures that your load is fairly forward relative to 
 the front axle. I am assuming that is so because you've chosen swept back 
 bars (those new Boscos) and your stem is therefore necessarily longer than 
 normal to compensate. The long stem means the front bag is also pushed 
 forward. 

 It is an interesting predicament. 

 Will


 

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