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Recumbent gearing calculator

Wheel diameterWheel size:
Front chainring(s): Crank length:
Front transmissionNone:
Schlumpf DriveMountain-Drive:     Speed-Drive:     HighSpeed-Drive:
Pinion gearboxP1.12:     P1.18:
Efneo GTRO (3-speed):
Rear cassetteCassette:
- 		Raw gear: -
~=170mm: -

SRAM 3x7 / Dual-Drive: -
~=170mm: -
14-sp Rohloff Speedhub 500/14 Cog: -
~=170mm: -
3x3 NINE Cog: -
~=170mm: -
7-8sp Internal Cog: SRAM S7: -
Shimano Nexus-7: -
Shimano Nexus Inter-8: -
Shimano Alfine-11: -
Nuvinci N360: -
Sturmey: -
Single-speed: -
© 2003-2024 Hugh Kern, All rights reserved.
Cool riding Ventisit cushion relieves Terratrike seat hotspots
Ventisit seatpad covers the hotspot at the front corner of a Terratrike seat

Ventisit seatpad cushions Terratrike seat hotspot. Airflow through high-tech material improves evaporation of sweat so riders ride cooler.

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First Catrike Dumont full-suspension recumbent trikes to ship on 1 October 2016
Catrike 3D engineering drawing of the Dumont full-suspension recumbent tricycle

Catrike announces a delay on full production of the Dumont until October 1, 2016. Dumont full-suspension recumbent trike to incorporate next generation manufacturing technologies.

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RideAtaxia NorCal 2016 raises more funds for Friedrich's Ataxia research
Ride Ataxia Team Sean

Kyle Bryant rallied the Ataxians and their supporters at the 7th Annual Ride Ataxia NorCal. Riders, families, and friends gathered in picturesque Winters, California for the 4 June 2016 event and raised a stunning amount of money for Friedrich's Ataxia research.

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RideAtaxia NorCal 2016 comes to Winters
Friedrich's ataxia awareness

Come out and support the Kyle Bryant and The Ataxians for Ride Ataxia's SEVENTH annual fundraiser to raise money for research to cure Friedrich's Ataxia. This year, the ride begins and ends in Winters, CA (not Davis).

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