Schlumpf 34T/85 High Speed Drive w/170mm Cranks
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We install the Schlumpf High Speed Drives in house, and can install it for you before or after the purchase of a trike. Either way, installation is free. The simplest way to get the Schlumpf on your ride is to send us your boom or bring in your trike.
The Standard Schlumpf High Speed Drive comes with:
HSD 170mm crank arms
HSD with integrated bottom bracket
27-tooth chainring
Integrated trouser guard
Lubrication syringe
The Schlumpf High Speed Drive (HSD) provides a very elegant solution that eliminates the standard front derailleur and improves the chainline besides just giving you higher gearing. Another big advantage is that you can shift at anytime, whether you are stopped or coasting, so youll never get stuck in too high of a gear.
The High Speed Drive eliminates the front derailleur and the double or tripe chain rings. It has a single chain ring with internal planetary gears.
The Schlumpf High Speed Drive is an internal gearing solution that uses planetary gears to increase the rotational speed of the chainring compared to the crank arms by 250% when engaged. When disengaged, the cranks are effectively locked to the 27-tooth sprocket. With such a wide gear range, the HSD completely replaces the front chainrings, derailleur, and shifter, even though it only has two gears. The wide gear range means virtually no overlapping of the gear ratios.
In-shop installation of the Schlumpf High Speed Drive on your trike or boom is free at time of purchase. Don't hassle trying to do it yourself, Send us your boom or bring in your trike and let us do it for you!
