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=.
