FWIW another fellow on the group did a 2-speed coaster build with a Susie and has a small write up on it here.
2-Speed Coaster Susie <https://groups.google.com/u/6/g/rbw-owners-bunch/c/xFNmeutUclA/m/M_LzZgkoAQAJ> On Thursday, December 21, 2023 at 10:58:38 AM UTC-8 mathiass...@gmail.com wrote: > I have done this and would probably not do it again -- it takes some > awareness and some re-training to go from coaster brake to being able to > backpedal freely. I'm on my third winter on the coaster-brake bike and > still have trouble coming to a stop with the right pedal in the "take-off" > position. But then I'm not very coordinated. > > The upside of the coaster brake, and why I still use it, is the simplicity > for winter riding. In rust belt winters, everything corrodes and gets > messed up. So there's one less apparatus to worry about, plus the chain > won't freeze up like the brake cable could. > > I searched high and low for a steel mountain bike with horizontal > dropouts. They're like hen's teeth. Specialized bikes up until 1993 or so > qualify, so I got a Rockhopper. > My last winter bike was Cannondale hybrid, with horizontal dropouts like > all aluminum bikes I've ever seen, and there I used a calculator similar to > what @iamkeith is recommending. It gets futzy, and the result won't be > gospel, but this type of calculator is essential to figuring out a > chainring/sprocket combination that works. A little trial and error might > be necessary. Expect maybe 4-500 miles of wear before the chain elongates > enough to become a problem. > > Fun fact, after the chain comes off, you got no rear brake. So make sure > you have one in front also. > > As @Bill Lindsay alluded to above but didn't spell out: Coaster brakes and > chain tensioners don't really mix. Whatever slack is in the system needs to > be taken up before the braking starts. > Also, by the time you add the tensioner, just get one that shifts ;) > > The whole thing seems like trouble; nothing wrong with coaster brakes, > just use a frame the works with you, not against you. > > cheers -mathias > On Wednesday, December 20, 2023 at 8:36:42 AM UTC-5 JohnS wrote: > >> Velo Orange sells an eccentric bottom bracket for hollow tech cranks. >> Currently out of stock though. Good reviews for the most part, one did say >> it doesn't take up much slack, maybe one link at most. Probably would work >> fine with a half link. >> >> >> https://velo-orange.com/collections/bottom-brackets/products/eccentric-bottom-bracket-bsa >> >> https://www.universalcycles.com/search.php?q=half+link >> >> JohnS >> >> On Tuesday, December 19, 2023 at 8:48:23 PM UTC-5 Bill Lindsay wrote: >> >>> Cyclofiend Jim >>> >>> I think your eyes skipped over the words "coaster brake" (aka a >>> foot-brake rear hub) in this thread. The original poster wants to put a >>> coaster brake rear wheel on their Clem. Otherwise, spot-on suggestions. >>> :-) >>> >>> BL in EC >>> >>> On Tuesday, December 19, 2023 at 1:37:11 PM UTC-8 Cyclofiend Jim wrote: >>> >>>> On Monday, December 18, 2023 at 10:15:35 AM UTC-8 Bill Lindsay wrote: >>>> >>>> The show stoppers that I would fear are: >>>> >>>> 1. A coaster brake requires a no-tensioner way to take up chain slack. >>>> On normal cruisers, that's done with horizontal dropouts. The Clem has >>>> vertical dropouts. >>>> >>>> >>>> Fixing chain slack on vertical dropouts is easily addressed with a >>>> chain tensioner. >>>> https://surlybikes.com/parts/singleator >>>> >>>> Or if you want a purpose-built wheel, check out the White ENO hub - >>>> https://www.whiteind.com/product/eno-flip-flop/ >>>> >>>> If you go the hub route, you would have to leave the handbrakes in >>>> place.... >>>> >>>> J >>>> >>> -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/e08b8c53-2b8d-44a9-acb1-5d316412f1a5n%40googlegroups.com.
