Gear Hub fan
Join Date: Nov 2008
Location: Reno, NV
Bikes: Civia Hyland Rohloff, Swobo Dixon, Colnago, Univega
The original design idea dates back to pre WW1 in France where it was produced for a number of years. It is covered in the book "The Dancing Chain", third edition by Frank Berto.
When first introduced it had the advantage of providing a much wider gearing range than other available systems of the time but ergonomically it is poor due to not using the lower legs in a rotating pattern of movement. You have to bring the legs to a stop at the top and bottom of the leg stroke and lift the lowered leg without any help from the other leg.
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
Visit and join the Yahoo Geared Hub Bikes group for support and links.