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=.
