Use this gearing calculator to figure out gear-inches for combinations of Pinion gearboxes, Schlumpf drives, Rohloff Speedhub, derailleur systems, and many internally geared hubs including SRAM 3x7 and Dual-Drive. Also, since gear-inches is not really a measure of mechanical advantage (thus, won't give indication of such for shorter or longer cranks), we provide a "normalized" gear-inches number, which indicates the effective mechanical advantage of the system in terms of standard 170mm cranks.
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Push brakes and paddle shifters on ICE Sprint 26
We are putting together a trike for a gentleman with a neurological condition that inhibits "pulling" action with his hands.
He has settled on an ICE Sprint 26 recumbent trike and we have determined a configuration that will allow him to operate his trike with "pushing" actions.
The pictures show a prototype solution. We intend to mount the brake levers backwards so they operate with pushes rather than pulls. Trigger shifters mounted upside down and on the "wrong" side allow the paddles of the shifters to be actuated with pushing action using the palms of his hands.
The cost to configure this is nominal.
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AlphaBENT has extensive experience servicing most brands of trikes including those made by Terratrike.
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