Re: [RBW] Re: 8-Speed Quickbeam
VERY nice. Yes, indeed. I have a Shimano Nexus 8 on my Cross Check and love it. It has maybe 3000 miles on it at this point, and has yet to have a problem. I agree that the internal gear hub is not as efficient as a derailleur setup, however I have not felt any issues when climbing or pushing hard. I have done several centuries on it, and it is fine for those distances. But I also plan on starting a brevet series in the Spring, so I recently picked up a Rambouillet. I definitely felt that the derailleur setup would be better for doing those longer distances. I would trust my Shimano hub to do those rides, though. Eric - where did you get the metal things for attaching the shifter cable to the frame? Steve On Nov 17, 2009, at 4:24 PM, Eric Norris wrote: My only issue with the hub (once I got the first defective hub repaired by the good folks at Hiawatha Cyclery) is that it's definitely not as efficient as a standard derailleur setup, and much less effiicient than a fixed gear. I'll be posting a more detailed writeup on my blog soon, but in summary the hub doesn't like to be pushed hard. Spinning on the flats, it works fine, but when taking off from a start or climbing even a modest grade you can feel the gears inside the hub working. I originally set this bike up to ride in brevets next year, but I'm not ready to commit to that yet. So far, I'm afraid that the reduced efficiency would make it too hard to ride very long distances. --Eric campyonly...@me.com www.campyonly.com www.wheelsnorth.org -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=.
[RBW] Re: 8-Speed Quickbeam
On Nov 18, 2009, at 7:04 AM, Steve Wimberg wrote: I agree that the internal gear hub is not as efficient as a derailleur setup On Nov 17, 2009, at 4:24 PM, Eric Norris wrote: My only issue with the hub (once I got the first defective hub repaired by the good folks at Hiawatha Cyclery) is that it's definitely not as efficient as a standard derailleur setup, and much less effiicient than a fixed gear. Frank Berto's comparative efficiency testing of derailleurs versus hub gears indicated that hub gears are very close to the efficiency of derailleurs in most gears. It also showed that derailleur systems are nowhere near as efficient as people think they are (e.g., the 98% efficiency claim many people make is under very ideal conditions only). It was quite interesting that gear size has a much bigger impact on efficiency, especially the rear cogs. As the cog gets small, efficiency drops dramatically. Cogs below 14 teeth are less efficient than hub gears. Hub gears have gotten a bad rap since about 1914 when Lucien Petit- Breton complained that they were friction boxes. Mind you, this was after he was leading the Tour de France using a Sturmey-Archer hub until he hit a dog and crashed out of the race... I've been convinced for decades that hub gears are preferable to derailleurs for about 90% of riders in terms of use (simple shifting, reliability, etc.). The big problem for most riders is dealing with flats, being a bit more complicated than is the case with derailleurs. -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=.
[RBW] Re: 8-Speed Quickbeam
On Nov 18, 2009, at 9:13 AM, Eric Norris wrote: I'll be taking the 8SQB out for a longer ride this weekend. I'll let everyone know what I think about the performance of the hub. Part of the less efficient feeling may be the sounds made by the hubs--you can hear the gears meshing together. I'd be interested in ready Berto's report--is it online? It's in The Dancing Chain. -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=.
[RBW] Re: 8-Speed Quickbeam
I'd say that efficiency varies from one hub model to another, based on my experience spinning them in my truing stand. I understand that SRAM 7sp and 9sp hubs have good reputations for high-efficiency, and I've always thought the Shimano 8sp hubs (lots of experience with those) seemed reasonably efficient. The only Sturmey 8sp hub I ever sold was to Eric, and I never had that one in the truing stand, so my data set is limited. Old and new 3sp hubs seem to be more efficient than any of the 7/8/9/14sp hubs, but that's just my perception, so take it with a grain of salt. As an aside: I had an unnerving experience 2 weeks ago with a customer service department at one of the well known IGH manufacturers. I was trying to get warranty parts for a hub from the manufacturer (always a crap shoot). The customer service tech suggested that the hub was being over-torqued and told me that IGHs were for cruisers and other low-torque applications. Good for grandma to ride to church on Sundays, but not adequate for a vigorous cycler, apparently. As this was the priciest hub in its class, I found it surprising that the manufacturer regarded it as a component for cheap beach cruisers. Ultimately, he sent me an entire hub when I just needed a small part (seems to be the protocol to send the whole thing rather than a $2 part). Anyway, it has been my experience generally that IGH hubs are not always well-supported with regard to replacement parts. Sturmey is the exception to this, in my experience. They have always been exceedingly helpful with replacement parts, and even loaned me a tool to fix Eric's hub! I'm with Grant in not being a huge fan of IGHs, at least for my own use. I have not had the bad experiences with derailleur systems that seem to be universal among IGH adherents. And, particularly with the larger gearhubs, wheel removal for flat fixes can be a major headache. That, to me, is the biggest issue. That said, others have different priorities, and I understand that having a sheltered gear-changing mechanism that can shift while stopped may outweigh my tire-changing and part acquisition concerns. On Nov 18, 9:28 am, Tim McNamara tim...@bitstream.net wrote: On Nov 18, 2009, at 9:13 AM, Eric Norris wrote: I'll be taking the 8SQB out for a longer ride this weekend. I'll let everyone know what I think about the performance of the hub. Part of the less efficient feeling may be the sounds made by the hubs--you can hear the gears meshing together. I'd be interested in ready Berto's report--is it online? It's in The Dancing Chain. -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=.
Re: [RBW] Re: 8-Speed Quickbeam
--- On Wed, 11/18/09, Jim Thill - Hiawatha Cyclery thill@gmail.com wrote: The customer service tech suggested that the hub was being over-torqued and told me that IGHs were for cruisers and other low-torque applications. Good for grandma to ride to church on Sundays, but not adequate for a vigorous cycler, apparently. Jim -- That's interesting that he made such a comment. That didn't happen to be a certain high-end German manufacturer did it? The reason I ask is that -- as I spoke about a few posts back-- I toured cross Nevada, Utah, Colo Rockies with a guy who rode a Thorn fitted with a Rohloff 14-speed. I have to tell you, that hub appeared bulletproof to me. David was a real masher, too, having been a mountain biker all his cycling life, and the hub never held him back. David is from England, and those hubs are more common over there, so perhaps he has a knack for the proper riding with an internal. Anyway, I was just curious if you have had any experience with the Rohloff brand. I know they are very pricey, but, as I said, appear to be quite long-lasting. Ray -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=.
[RBW] Re: 8-Speed Quickbeam
Eric- Very cool set-up. I look forward to hearing how it does over the winter. Kathryn On Oct 3, 1:45 pm, Eric Norris campyonly...@me.com wrote: Just completed updating my Quickbeam with an 8-speed Sturmey-Archer hub. Photos are here: http://www.flickr.com/photos/35176...@n03/sets/72157622384321375/ You'll see that I used a J-Tek bar-end shifter in place of the standard gripshifter that comes with the hub. It works perfectly, and makes for a much cleaner installation, IMHO. Thanks to Jim at Hiawatha Cyclery, who sold me the hub and shifter. He even included in the inline barrel adjuster that sits just upstream of the hub (something I wouldn't have thought of). I have the chain running on 32T inner ring on the QB's crankset. The chainline is much straighter than on the 40T large ring, and the range of gears is better (for me). The hub's lowest gear is direct drive-- with the stock 25T cog, that gives me about 34 gear inches. Gears 2-8 multiply the low gear--top end is 104 gear inches. (By comparison, low/high on the 40T ring would be 43/131. The top gear there would really be necessary only on downhills of 30mph or more; I prefer a more usable range and a lower low gear.) Gear calcs from Sheldon Brown's online calculator (http://sheldonbrown.com/gears/internal.html ): For 700 X 28 / 28-622 tire with 170 mm cranks and 25 tooth sprocket 40 / 25 25.0 % 32 / 25 3.05 130.6 104.5 28.2 % 2.38 101.9 81.5 13.3 % 2.1 89.9 71.9 12.9 % 1.86 79.6 63.7 13.4 % 1.64 70.2 56.2 13.1 % 1.45 62.1 49.7 13.3 % 1.28 54.8 43.8 28.0 % 1 42.8 34.3 Pros (so far): --Simple and easy to shift --Impervious to weather --Singlespeed chains are cheap and easy to replace --Legendary Sturmey-Archer reliability --Good range of gears --Makes cool ticking noises that change depending on what gear you're in. Cons (so far): --Heavy. Hub alone is 4 pounds. Built wheel is close to five. --Impossible to fix on the road if something goes wrong inside the hub. I'm interested in any other experiences that members of this list have with Sturmey-Archer hubs. --Ericwww.wheelsnorth.orgwww.campyonly.com -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=.
[RBW] Re: 8-Speed Quickbeam
Perhaps this is no longer the case. Around June or so my LBS learned that Rohloff and its U.S. distributor had parted ways. As a result, they were unable to source the Rohloff specified oil and seals I needed after mine started leaking. I wound up giving the rather expensive Oswald custom built around the Rohloff to one of the LBS mechanics. Life is too short to mess with poorly supported components. On Nov 18, 10:40 am, Jim Thill - Hiawatha Cyclery thill@gmail.com wrote: We have set up 2 or 3 Rohloffs. They seem to be very durable. I have not yet had to do any significant service to the Rohloffs we've sold and set up. On Nov 18, 10:17 am, Ray Shine r.sh...@sbcglobal.net wrote: --- On Wed, 11/18/09, Jim Thill - Hiawatha Cyclery thill@gmail.com wrote: The customer service tech suggested that the hub was being over-torqued and told me that IGHs were for cruisers and other low-torque applications. Good for grandma to ride to church on Sundays, but not adequate for a vigorous cycler, apparently. Jim -- That's interesting that he made such a comment. That didn't happen to be a certain high-end German manufacturer did it? The reason I ask is that -- as I spoke about a few posts back-- I toured cross Nevada, Utah, Colo Rockies with a guy who rode a Thorn fitted with a Rohloff 14-speed. I have to tell you, that hub appeared bulletproof to me. David was a real masher, too, having been a mountain biker all his cycling life, and the hub never held him back. David is from England, and those hubs are more common over there, so perhaps he has a knack for the proper riding with an internal. Anyway, I was just curious if you have had any experience with the Rohloff brand. I know they are very pricey, but, as I said, appear to be quite long-lasting. Ray- Hide quoted text - - Show quoted text - -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=.
Re: [RBW] Re: 8-Speed Quickbeam
Yes, I don't know what is at the root of the dispute between Rohloff and their former US distributor, but it is annoying. Their former distributor did do a warranty repair for me recently (leaking oil), but I had to wait several months until they had the right parts. And I think that was an exception since they had replaced the seals once before and probably felt bad for me. So at this point, I'm not sure what the deal will be with warranty repairs: i.e., whether things will have to go back to Germany or what. If you want to pay to have someone work on it, Cyclemonkey (the shop of the former distributor) knows what they are doing. From: JoelMatthews joelmatth...@mac.com Reply-To: rbw-owners-bunch@googlegroups.com Date: Wed, 18 Nov 2009 08:56:28 -0800 (PST) To: RBW Owners Bunch rbw-owners-bunch@googlegroups.com Subject: [RBW] Re: 8-Speed Quickbeam Perhaps this is no longer the case. Around June or so my LBS learned that Rohloff and its U.S. distributor had parted ways. As a result, they were unable to source the Rohloff specified oil and seals I needed after mine started leaking. I wound up giving the rather expensive Oswald custom built around the Rohloff to one of the LBS mechanics. Life is too short to mess with poorly supported components. On Nov 18, 10:40 am, Jim Thill - Hiawatha Cyclery thill@gmail.com wrote: We have set up 2 or 3 Rohloffs. They seem to be very durable. I have not yet had to do any significant service to the Rohloffs we've sold and set up. On Nov 18, 10:17 am, Ray Shine r.sh...@sbcglobal.net wrote: --- On Wed, 11/18/09, Jim Thill - Hiawatha Cyclery thill@gmail.com wrote: The customer service tech suggested that the hub was being over-torqued and told me that IGHs were for cruisers and other low-torque applications. Good for grandma to ride to church on Sundays, but not adequate for a vigorous cycler, apparently. Jim -- That's interesting that he made such a comment. That didn't happen to be a certain high-end German manufacturer did it? The reason I ask is that -- as I spoke about a few posts back-- I toured cross Nevada, Utah, Colo Rockies with a guy who rode a Thorn fitted with a Rohloff 14-speed. I have to tell you, that hub appeared bulletproof to me. David was a real masher, too, having been a mountain biker all his cycling life, and the hub never held him back. David is from England, and those hubs are more common over there, so perhaps he has a knack for the proper riding with an internal. Anyway, I was just curious if you have had any experience with the Rohloff brand. I know they are very pricey, but, as I said, appear to be quite long-lasting. Ray- Hide quoted text - - Show quoted text - -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=. -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=.
Re: [RBW] Re: 8-Speed Quickbeam
on 11/18/09 8:17 AM, Ray Shine at r.sh...@sbcglobal.net wrote: --- On Wed, 11/18/09, Jim Thill - Hiawatha Cyclery thill@gmail.com wrote: The customer service tech suggested that the hub was being over-torqued and told me that IGHs were for cruisers and other low-torque applications. Good for grandma to ride to church on Sundays, but not adequate for a vigorous cycler, apparently. Jim -- That's interesting that he made such a comment. That didn't happen to be a certain high-end German manufacturer did it? The reason I ask is that -- as I spoke about a few posts back-- I toured cross Nevada, Utah, Colo Rockies with a guy who rode a Thorn fitted with a Rohloff 14-speed. I have to tell you, that hub appeared bulletproof to me. David was a real masher, too, having been a mountain biker all his cycling life, and the hub never held him back. David is from England, and those hubs are more common over there, so perhaps he has a knack for the proper riding with an internal. Anyway, I was just curious if you have had any experience with the Rohloff brand. I know they are very pricey, but, as I said, appear to be quite long-lasting. Rohloff is top-drawer componentry. I know two people who have bigger engines than most, who use them hard and have no complaints. But, then again, that's why Rohloffs cost what they do. There have been a number of good Rohloff threads on the ibob list, and list-owner alex w. is a proponent, having a custom bicycle built specifically to use one. http://tinyurl.com/alexrohloff I'd check through the ibob archives for a wealth of info and experiences. - Jim -- Jim Edgar cyclofi...@earthlink.net ³Velvet pillows, safari parks, sunglasses: people have become woolly mice. They still have bodies that can walk for five days and four nights through a desert of snow, without food, but they accept praise for having taken a one-hour bicycle ride.² - Tim Krabbe, The Rider Cyclofiend Bicycle Photo Galleries - http://www.cyclofiend.com Current Classics - Cross Bikes Singlespeed - Working Bikes Send In Your Photos! - Here's how: http://www.cyclofiend.com/guidelines -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=.
[RBW] Re: 8-Speed Quickbeam
What a spectacular setup -- thanks for posting. Pros (so far): [...snip...] Can the S-A 8-spd be shifted at a full stop? I'm interested in any other experiences that members of this list have with Sturmey-Archer hubs. For what it's worth, I'm the original owner of a 1973 bike with the classic 3-speed S-A hub (www.flickr.com/photos/millhiser/2261304269). Despite never being serviced/maintained in 36 years, the hub is still going strong (admittedly, it has never seen big touring miles). My only issue with the hub ... is that it's definitely not as efficient as a standard derailleur setup, and much less efficient than a fixed gear. Agreed -- I wonder if anyone has quantified these losses (and how these losses compare, say, to a 10 mph headwind). My understanding of the S.A. 3-speed hub is that 2nd gear simply locks the hub turning it into a single speed. I wonder if any of the gears on the 8-speed do this? Final challenge to y'all: Has anyone mounted a S-A 8-speed hub with internal drum brake on a Quickbeam? (www.sturmey-archer.com/products/ hubs/cid/5/id/7). On Nov 18, 11:42 am, clevewh...@gmail.com clevewh...@gmail.com wrote: Eric- Very cool set-up. I look forward to hearing how it does over the winter. Kathryn On Oct 3, 1:45 pm, Eric Norris campyonly...@me.com wrote: Just completed updating my Quickbeam with an 8-speed Sturmey-Archer hub. Photos are here: http://www.flickr.com/photos/35176...@n03/sets/72157622384321375/ You'll see that I used a J-Tek bar-end shifter in place of the standard gripshifter that comes with the hub. It works perfectly, and makes for a much cleaner installation, IMHO. Thanks to Jim at Hiawatha Cyclery, who sold me the hub and shifter. He even included in the inline barrel adjuster that sits just upstream of the hub (something I wouldn't have thought of). I have the chain running on 32T inner ring on the QB's crankset. The chainline is much straighter than on the 40T large ring, and the range of gears is better (for me). The hub's lowest gear is direct drive-- with the stock 25T cog, that gives me about 34 gear inches. Gears 2-8 multiply the low gear--top end is 104 gear inches. (By comparison, low/high on the 40T ring would be 43/131. The top gear there would really be necessary only on downhills of 30mph or more; I prefer a more usable range and a lower low gear.) Gear calcs from Sheldon Brown's online calculator (http://sheldonbrown.com/gears/internal.html ): For 700 X 28 / 28-622 tire with 170 mm cranks and 25 tooth sprocket 40 / 25 25.0 % 32 / 25 3.05 130.6 104.5 28.2 % 2.38 101.9 81.5 13.3 % 2.1 89.9 71.9 12.9 % 1.86 79.6 63.7 13.4 % 1.64 70.2 56.2 13.1 % 1.45 62.1 49.7 13.3 % 1.28 54.8 43.8 28.0 % 1 42.8 34.3 Pros (so far): --Simple and easy to shift --Impervious to weather --Singlespeed chains are cheap and easy to replace --Legendary Sturmey-Archer reliability --Good range of gears --Makes cool ticking noises that change depending on what gear you're in. Cons (so far): --Heavy. Hub alone is 4 pounds. Built wheel is close to five. --Impossible to fix on the road if something goes wrong inside the hub. I'm interested in any other experiences that members of this list have with Sturmey-Archer hubs. --Ericwww.wheelsnorth.orgwww.campyonly.com -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=.
Re: [RBW] Re: 8-Speed Quickbeam
on 11/18/09 9:47 AM, JoelMatthews at joelmatth...@mac.com wrote: Rohloff is top-drawer componentry. I know two people who have bigger engines than most, who use them hard and have no complaints. But, then again, that's why Rohloffs cost what they do. I agree the Rohloff is a quality piece of equipment. Not being able to have minor warranty work done easily here in the U.S. is a problem, however. Agreed. They do not seem to be easily user-serviceable http://en.wikipedia.org/wiki/File:Speedhub-schnitt.jpg Since we're veering into IGH territory, it's helpful to know that AASHTA - http://sheldonbrown.com/sturmey-archer http://www.sheldonbrown.com/nexus-mech.html - J -- Jim Edgar cyclofi...@earthlink.net Cyclofiend Bicycle Photo Galleries - http://www.cyclofiend.com Current Classics - Cross Bikes Singlespeed - Working Bikes Send In Your Photos! - Here's how: http://www.cyclofiend.com/guidelines The bike between her legs was like some hyper-evolved alien tail she'd somehow extruded, as though over patient centuries; a sweet and intricate bone-machine, grown Lexan-armored tires, near-frictionless bearings, and gas filled shocks. William Gibson - Virtual Light -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=.
[RBW] Re: 8-Speed Quickbeam
great to see that the x-rf8[w] works with the jtek shifter. I have this combination coming in for my ladyfriend, but was worried that the jtek was only compatable with the original x-rf8. On the shift cable, we're going to use pulleys where you used housing for a classic 3speed look. Will post pictures of the complete build. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To post to this group, send email to rbw-owners-bunch@googlegroups.com To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en -~--~~~~--~~--~--~---
[RBW] Re: 8-Speed Quickbeam
Most interesting post I've seen in a while. Good to see that the rear spacing is a non-issue. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To post to this group, send email to rbw-owners-bunch@googlegroups.com To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en -~--~~~~--~~--~--~---
[RBW] Re: 8-Speed Quickbeam
On Tue, Nov 17, 2009 at 2:29 PM, Mark mclbicy...@gmail.com wrote: I dont know why more people dont have rear hubs.I've never seen one break and theres no maintenance. Grant has told me he doesnt like them. Never really explained why, but I like em. Great job Eric! I like them - however I can come up with a few reasons to not like them: 1. if the hub breaks or you can't shift it - you're out of luck, period. stuck 2. if the hub breaks you HAVE to talk to someone about fixing it. At least in the case of the shimano hubs fixing it yourself, where you are is put-near impossible. 3. you can't manually move things around and limp along like you can with a derailler 4. when a derailler or cable breaks you can normally just manually move the chain and tie off the cable if you need to. those all sound like plausible reasons. Now, for in-town you can walk if you get stuck and I don't want to even SEE the chain kind of applications I think igh are a good plan. -sv --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To post to this group, send email to rbw-owners-bunch@googlegroups.com To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en -~--~~~~--~~--~--~---
[RBW] Re: 8-Speed Quickbeam
I dont know why more people dont have rear hubs.I've never seen one break and theres no maintenance. Grant has told me he doesnt like them. Never really explained why, but I like em. Great job Eric! Surf On Nov 17, 2:01 pm, stevep33 steve...@gmail.com wrote: Most interesting post I've seen in a while. Good to see that the rear spacing is a non-issue. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To post to this group, send email to rbw-owners-bunch@googlegroups.com To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en -~--~~~~--~~--~--~---
Re: [RBW] Re: 8-Speed Quickbeam
I use an Shimano internal 8 on my Jamis Commuter for city rides. Works great, never a problem. I have never taken it on any ride longer than 20 miles in duration, just to and from the office, local neighborhood, etc. I assume I could take longer rides, however. Frankly, the Shimano hub is probably the component that I have the least to worry about, since the entire bike only cost me $400 new! (It's a commuter. if it gets ripped or smashed, I'm not out too much.) Now, last summer, I rode the Westrern Express and part of the Trans-Am with a guy riding a Thorn touring bike fitted with a Rohloff 14-speed internal. He had zero issues with the hub. We rode long and hard each day, all types of terrain and weather. Of course, the hub alone cost $1400! Yikes! Maybe that's why GP doesn't care for them! --- On Tue, 11/17/09, Seth Vidal skvi...@gmail.com wrote: From: Seth Vidal skvi...@gmail.com Subject: [RBW] Re: 8-Speed Quickbeam To: rbw-owners-bunch@googlegroups.com Date: Tuesday, November 17, 2009, 11:44 AM On Tue, Nov 17, 2009 at 2:29 PM, Mark mclbicy...@gmail.com wrote: I dont know why more people dont have rear hubs.I've never seen one break and theres no maintenance. Grant has told me he doesnt like them. Never really explained why, but I like em. Great job Eric! I like them - however I can come up with a few reasons to not like them: 1. if the hub breaks or you can't shift it - you're out of luck, period. stuck 2. if the hub breaks you HAVE to talk to someone about fixing it. At least in the case of the shimano hubs fixing it yourself, where you are is put-near impossible. 3. you can't manually move things around and limp along like you can with a derailler 4. when a derailler or cable breaks you can normally just manually move the chain and tie off the cable if you need to. those all sound like plausible reasons. Now, for in-town you can walk if you get stuck and I don't want to even SEE the chain kind of applications I think igh are a good plan. -sv --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To post to this group, send email to rbw-owners-bunch@googlegroups.com To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en -~--~~~~--~~--~--~--- -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=.
Re: [RBW] Re: 8-Speed Quickbeam
My only issue with the hub (once I got the first defective hub repaired by the good folks at Hiawatha Cyclery) is that it's definitely not as efficient as a standard derailleur setup, and much less effiicient than a fixed gear. I'll be posting a more detailed writeup on my blog soon, but in summary the hub doesn't like to be pushed hard. Spinning on the flats, it works fine, but when taking off from a start or climbing even a modest grade you can feel the gears inside the hub working. I originally set this bike up to ride in brevets next year, but I'm not ready to commit to that yet. So far, I'm afraid that the reduced efficiency would make it too hard to ride very long distances. --Eric campyonly...@me.com www.campyonly.com www.wheelsnorth.org On Nov 17, 2009, at 11:29 AM, Mark wrote: I dont know why more people dont have rear hubs.I've never seen one break and theres no maintenance. Grant has told me he doesnt like them. Never really explained why, but I like em. Great job Eric! Surf On Nov 17, 2:01 pm, stevep33 steve...@gmail.com wrote: Most interesting post I've seen in a while. Good to see that the rear spacing is a non-issue. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To post to this group, send email to rbw-owners-bunch@googlegroups.com To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en -~--~~~~--~~--~--~--- --Eric campyonly...@me.com www.campyonly.com www.wheelsnorth.org -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=.
[RBW] Re: 8-Speed Quickbeam
Its a beauty! very nice build. I am sure there are QB purists out there that would shudder but to me both the QB and IGH are about keeping it simple so a marriage of the two makes lots of sense to me.Interested to hear more about the efficency versus a derailleur set up. I *may* be moving to a job that is closer to home (currently about 25 miles one way with lots of stop and go) which might help me justify an IGH commuter for my quiver ;-) thanks for the photos and inspiration. Love the bar end jtek btw looks very slick RR On Nov 17, 1:24 pm, Eric Norris campyonly...@me.com wrote: My only issue with the hub (once I got the first defective hub repaired by the good folks at Hiawatha Cyclery) is that it's definitely not as efficient as a standard derailleur setup, and much less effiicient than a fixed gear. I'll be posting a more detailed writeup on my blog soon, but in summary the hub doesn't like to be pushed hard. Spinning on the flats, it works fine, but when taking off from a start or climbing even a modest grade you can feel the gears inside the hub working. It l I originally set this bike up to ride in brevets next year, but I'm not ready to commit to that yet. So far, I'm afraid that the reduced efficiency would make it too hard to ride very long distances. --Eric campyonly...@me.comwww.campyonly.comwww.wheelsnorth.org On Nov 17, 2009, at 11:29 AM, Mark wrote: I dont know why more people dont have rear hubs.I've never seen one break and theres no maintenance. Grant has told me he doesnt like them. Never really explained why, but I like em. Great job Eric! Surf On Nov 17, 2:01 pm, stevep33 steve...@gmail.com wrote: Most interesting post I've seen in a while. Good to see that the rear spacing is a non-issue. --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To post to this group, send email to rbw-owners-bunch@googlegroups.com To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com For more options, visit this group athttp://groups.google.com/group/rbw-owners-bunch?hl=en -~--~~~~--~~--~--~--- --Eric campyonly...@me.comwww.campyonly.comwww.wheelsnorth.org- Hide quoted text - - Show quoted text - -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=.
[RBW] Re: 8-Speed Quickbeam
Very cool! I have been considering doing this too. Did you have to re-space the rear dropouts? On Oct 3, 5:45 pm, Eric Norris campyonly...@me.com wrote: Just completed updating my Quickbeam with an 8-speed Sturmey-Archer hub. Photos are here: http://www.flickr.com/photos/35176...@n03/sets/72157622384321375/ You'll see that I used a J-Tek bar-end shifter in place of the standard gripshifter that comes with the hub. It works perfectly, and makes for a much cleaner installation, IMHO. Thanks to Jim at Hiawatha Cyclery, who sold me the hub and shifter. He even included in the inline barrel adjuster that sits just upstream of the hub (something I wouldn't have thought of). I have the chain running on 32T inner ring on the QB's crankset. The chainline is much straighter than on the 40T large ring, and the range of gears is better (for me). The hub's lowest gear is direct drive-- with the stock 25T cog, that gives me about 34 gear inches. Gears 2-8 multiply the low gear--top end is 104 gear inches. (By comparison, low/high on the 40T ring would be 43/131. The top gear there would really be necessary only on downhills of 30mph or more; I prefer a more usable range and a lower low gear.) Gear calcs from Sheldon Brown's online calculator (http://sheldonbrown.com/gears/internal.html ): For 700 X 28 / 28-622 tire with 170 mm cranks and 25 tooth sprocket 40 / 25 25.0 % 32 / 25 3.05 130.6 104.5 28.2 % 2.38 101.9 81.5 13.3 % 2.1 89.9 71.9 12.9 % 1.86 79.6 63.7 13.4 % 1.64 70.2 56.2 13.1 % 1.45 62.1 49.7 13.3 % 1.28 54.8 43.8 28.0 % 1 42.8 34.3 Pros (so far): --Simple and easy to shift --Impervious to weather --Singlespeed chains are cheap and easy to replace --Legendary Sturmey-Archer reliability --Good range of gears --Makes cool ticking noises that change depending on what gear you're in. Cons (so far): --Heavy. Hub alone is 4 pounds. Built wheel is close to five. --Impossible to fix on the road if something goes wrong inside the hub. I'm interested in any other experiences that members of this list have with Sturmey-Archer hubs. --Ericwww.wheelsnorth.orgwww.campyonly.com --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To post to this group, send email to rbw-owners-bunch@googlegroups.com To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en -~--~~~~--~~--~--~---
[RBW] Re: 8-Speed Quickbeam
No respacing needed. The Sturmey-Archer hub starts at 115mm and goes up to 135-just add more locknuts. It fits perfectly in the QB's 120mm fork ends. --Eric campyonly...@me.com www.campyonly.com www.wheelsnorth.org On Oct 3, 2009, at 8:35 PM, Kelly wrote: Very cool! I have been considering doing this too. Did you have to re-space the rear dropouts? On Oct 3, 5:45 pm, Eric Norris campyonly...@me.com wrote: Just completed updating my Quickbeam with an 8-speed Sturmey-Archer hub. Photos are here: http://www.flickr.com/photos/35176...@n03/sets/72157622384321375/ You'll see that I used a J-Tek bar-end shifter in place of the standard gripshifter that comes with the hub. It works perfectly, and makes for a much cleaner installation, IMHO. Thanks to Jim at Hiawatha Cyclery, who sold me the hub and shifter. He even included in the inline barrel adjuster that sits just upstream of the hub (something I wouldn't have thought of). I have the chain running on 32T inner ring on the QB's crankset. The chainline is much straighter than on the 40T large ring, and the range of gears is better (for me). The hub's lowest gear is direct drive-- with the stock 25T cog, that gives me about 34 gear inches. Gears 2-8 multiply the low gear--top end is 104 gear inches. (By comparison, low/high on the 40T ring would be 43/131. The top gear there would really be necessary only on downhills of 30mph or more; I prefer a more usable range and a lower low gear.) Gear calcs from Sheldon Brown's online calculator (http://sheldonbrown.com/gears/internal.html ): For 700 X 28 / 28-622 tire with 170 mm cranks and 25 tooth sprocket 40 / 25 25.0 % 32 / 25 3.05130.6 104.5 28.2 % 2.38101.9 81.5 13.3 % 2.1 89.971.9 12.9 % 1.8679.663.7 13.4 % 1.6470.256.2 13.1 % 1.4562.149.7 13.3 % 1.2854.843.8 28.0 % 1 42.834.3 Pros (so far): --Simple and easy to shift --Impervious to weather --Singlespeed chains are cheap and easy to replace --Legendary Sturmey-Archer reliability --Good range of gears --Makes cool ticking noises that change depending on what gear you're in. Cons (so far): --Heavy. Hub alone is 4 pounds. Built wheel is close to five. --Impossible to fix on the road if something goes wrong inside the hub. I'm interested in any other experiences that members of this list have with Sturmey-Archer hubs. --Ericwww.wheelsnorth.orgwww.campyonly.com --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To post to this group, send email to rbw-owners-bunch@googlegroups.com To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en -~--~~~~--~~--~--~---
