Re: [RBW] Jobst on 650b?

2018-09-18 Thread travis.ha...@gmail.com
>From a current threat on lubricating or just using faster jockey wheels,  
>among the veterans and survivors at rec.tech:

‘If I recall, that crap with Jobst started when I rode with him and he was 
climbing in a 48-19. I suggested that he could probably do a better job at his 
age with a 39-25 and he went Jobst on me.’

Harry Travis
PDX, OR,USA

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[RBW] Re: Effect of reach from changing stem length vs raising/lowering

2018-08-14 Thread travis.ha...@gmail.com
I like John’s remark. Too often lost in the exact formula is appreciation of 
how little or how much variation there is. 

To OP: If your stem a quill type with an expander bolt, I don’t know why you 
wouldn’t look at other stems and measure distances to get estimates of minimum 
insertion for your custom stem. 

A Nitto-made stem I just measured expects 2 of 6 inches to be below the top 
nut. Would it be marked more conservatively if it were a 130mm stem instead of 
an 80mm (c to c) what with the potentially greater leverage?

Harry Travis
Portland,OR

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[RBW] Hammock camping?

2018-05-31 Thread travis.ha...@gmail.com
I’m a dedicated hammock camper, w >1000 off the ground for comfort. 

Theultimatehang.com and Derek Hansen’s book will help you lots. He’s a veteran 
Boys Scout leader, so his advice for and experience with newbies is 
outstanding. 

You must underquilt , as a Bike packer, for space and weight. Kludges are akin 
to lifting your chain between chain wheels with a coat hanger. A partial UQ for 
your torso will do. If down-filled , it will weigh<1lb and compress to large 
grapefruit size. A sleeping bag is too much and too hard to enter and exit 
unless left mostly unzipped . A top quilt replacement for temps to 35F will 
weigh <20oz. 
Total kit, down UQ and TQ, hammock, straps, and tarp, will come to 5-6lb. 

Hammockforums.net is a good source for discussion, info, and gear. 

WARNING: Hammock campers there include weight weenies to rival mountaineers and 
CF aficionados. 

Harry Travis
PDX, OR
USA

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Re: [RBW] Re: Which tire (and can I get by without sealant?) for AZ road/dirt

2018-05-21 Thread travis.ha...@gmail.com
Tire Savers ... and I see that Compass makes them in the US again and markets 
them as ‘Tire Savers.’ Elsewhere, they’ve been called ‘flint flickers.’

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Re: [RBW] Re: Which tire (and can I get by without sealant?) for AZ road/dirt

2018-05-21 Thread travis.ha...@gmail.com
The first bike of the modern age I bought bore two old skool prophylactics on 
the tubs: thorn scrapers resting gently on the surfaces of the tire treads. 
Because it is the second and subsequent rotation of the tire that is mostly 
responsive for driving the point of the glass or goathead in, flicking them off 
stops most punctures from developing. 
They used to mount to the fork brake bolts. I see a patent illustration in 
which they are mounted with adhesive to the frame. 

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[RBW] Re: New Thoughts on Saddle Height?

2010-09-27 Thread travis.ha...@gmail.com
2 centimeters, 4/5 of an inch? That's quite a bit. Did anyone ever
offer observation to you that your hips were rocking when you
pedaled?

The other rule of foot-length is that heels just touching the pedals
when the leg is fully extended implies the right bend at the knee
when the distance from heel to place-of-foot over pedal is added. That
said, common advice is that for many riders,  moving cleats a bit
behind the ball of the foot instead of under them is a better, if not
most powerful position. That would imply a lower saddle, but just
several mm. lower.

On Sep 27, 10:28 am, Jeremy Till jeremy.t...@gmail.com wrote:
 If you want to double check, you could measure your pubic bone height
 (PBH) using the method on the rivendell site and then apply their
 formula for seat height, which is PBH minus 10-10.5cm.  I did this
 recently and ended up lowering my saddles about 2 cm.  So far, my
 hamstrings are thanking me.  It also has the added advantage of
 raising my bars by 2cm relative to my seat, making everything just
 slightly more comfy cockpit-wise.

 On Sep 26, 6:29 pm, GeorgeS chobur...@gmail.com wrote:



  I rode my club's century today and as I was toiling up a hill, a young
  triathlete sort on a plastic thing (the tubes were not even round!)
  came by me and he said Sir, you might want to raise your seat a bit
  so you'll get more leverage.  Unsolicited advice is so cool.  My
  immediate thought was to tell him that I had been riding bikes since
  before he was born, but I've been trying to keep my mouth out of gear
  so I didn't say anything.  But then I started thinking that back in
  the day, the rule of thumb, at least as it was passed down to me, was
  that when the pedal is in the 6 o'clock position, the knee should be
  very slightly bent.  I've been doing that with every bike I've set up
  for lo these many years.  Was that wrong?  Has there been any progress
  in thinking on this subject?
  GeorgeS

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