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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 effect is that of having ...
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.
A 2-speed gear option was added in 2009, based on the cableless, Schlumpf front crank operated epicyclic gearbox. [15] The Strida 5 includes an upgrade kit of the Strida 3, and adds disc brakes, eccentric belt tensioner, metal spoked wheels and high pressure tyres.
A man in West Palm Beach, Florida has been arrested after being accused of making threats against President Trump, police say.
Leafy greens. Bust through salad boredom by thinking beyond kale and baby spinach. Next time you’re at the supermarket, grab a bunch of unfamiliar greens — we particularly love watercress ...
An HPV vaccine — compared to other immunizations — may not fall as high on the list of priority protections, despite its benefits. Plus, online discussion of several lawsuits has gained traction.
At the time, the gear hub with the greatest number of speeds was the unreliable 3700 gram 12 speed Sachs Elan (discontinued by 2000), made by the hub-gear manufacturer Sachs (later acquired by SRAM). A year later Rohloff presented a workable prototype at the 1997 IFMA and won a crate of champagne from the employees at Sachs, who had bet against ...