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Greenspeed Schlumph Innovations
The Schlumpf Innovations range of geared bottom brackets-- made in Switzerland to timepiece precision. Instead of running multiple chainrings up the front with much overlap in the gears, a planetary gear system is employed to provide a unique gearing between the the crank arms and the chainring. This means that with the Mountain Drive option, for example, your chainring spins at 1:1 in direct drive and your cranks rotate 2.5 times for every single revolution in low range. Using a 60-tooth up the front in direct drive, it drops down to the equivalent of a 24-tooth in low! See Schlumpf for more info and instructions.
Mountain Drive - high 1:1, low 2.5:1 All drives, USD$847 Available as an upgrade on GTO and GTT trikes at time of purchase: USD$549 Shipping Method UPS
Shipping Zone Map Industrialbicycles.com is completely dedicated to our customers; therefore, we prefer to talk to each customer individually to make sure you are completely knowledgeable about making the best purchase for your needs. If you have any questions on any product , please call any of our sales associate.
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