Gear Hub fan
Join Date: Nov 2008
Location: Reno, NV
Bikes: Civia Hyland Rohloff, Swobo Dixon, Colnago, Univega
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If you look at normal dropout width you would reduce rear spacing to more like 123mm or narrower as standard dropout widths are normally in the 6 to 10mm range from my observation. Need precision machining too in order to keep the bolt on parts from slightly shifting vertically in the original track dropout slots, causing the rear wheel to get out of alignment vertically.
Sliding dropouts seem to be increasing in popularity as they are used on the Civia Hyland and a couple of new Swobo models that I am aware of, and presumably other bikes too. I have the Civia and the disc caliper mounts to one sliding dropout so that the caliper and disc maintain the same positions in relation to one another when the chain tension is adjusted. The frame though is specifically designed for the sliding dropouts with the adjustment bolts well separated and the frame has slots to accomodate the sliding dropouts and prevent any vertical alignment shifting.
The Civia and one of the Swobos is IGH while the other Swobo is SS/FG using the new locking/unlocking SRAM single speed hub. This hub allows operation in either FG or SS modes.
Gear Hubs Owned: Rohloff disc brake, SRAM iM9 disc brake, SRAM P5 freewheel, Sachs Torpedo 3 speed freewheel, NuVinci CVT, Shimano Alfine SG S-501, Sturmey Archer S5-2 Alloy. Other: 83 Colnago Super Record, Univega Via De Oro
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