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Schlumpf Speed Drive. A Schlumpf Drive is a two-speed planetary gear assembly for use on bicycles and unicycles. It is distinct from other bicycle planetary gear assemblies in that it is located behind the chainring rather than in the rear hub. A push-button on each side of the axle allows the rider to switch between high and low ratios.
The Schlumpf Mountain Drive and Speed Drive have been available since 2001. [14] Some systems offer direct drive plus one of three variants (reduction 1:2.5, increase 1.65:1, and increase 2.5:1). Changing gears is accomplished by using your foot to tap a button protruding on each side of the bottom bracket spindle.
The drive side crank's gear ratio varied during the pedalling cycle by moving the round chainring upward and downward in regards to the crank's axle. The non-drive side crank was accelerated and decelerated by a gearing mechanism inside the bottom bracket to mimic the gear ratio variation the drive side crank went through, at an exact 180 ...
Nicolai gearbox mountain bike Pinion P1.18 gearbox installed in a bicycle frame Instinctiv Modern full suspension carbon gearbox mountain bike. A gearbox bicycle is a bicycle that uses a gearbox [1] [2] to convert torque and rotational speed from the power source, usually the rider's legs, to what is desired at the drive wheel.
ISIS Drive, the International Splined Interface Standard, is a non-proprietary splined specification for the interface between a bicycle crankset and the bottom bracket spindle. It was created by King Cycle Group, Truvativ, and Race Face. ISIS Drive is open source and free to the public to be used as seen fit.
With a chain drive transmission, a chainring attached to a crank drives the chain, which in turn rotates the rear wheel via the rear sprocket(s) (cassette or freewheel). There are four gearing options: two-speed hub gear integrated with chain ring, up to 3 chain rings, up to 12 sprockets, hub gear built into rear wheel (3-speed to 14-speed).
Schlumpf Collection, the 500 car collection of Fritz and Hans Schlumpf, now the Cité de l'Automobile in Mulhouse, France; Schlumpf Drive, a two-speed planetary gear bicycle bottom bracket; Chlum (disambiguation) Slump (disambiguation)
Deore XT is a mountain and touring bike groupset first introduced by Shimano in 1983. [1] It was Shimano's first mountain bike groupset, based on their existing Deore touring groupset, and it consisted of a triple-, double- or single chainring crankset, front and rear derailleurs, handlebar-mounted "finger" shifters, cantilever brakes, and large-flange hubs. [1]