Handcycles give riders with limited leg mobility the freedom of cycling. Adding electric assist extends that freedom. Here's how to convert a handcycle.
Handcycles are recumbent-style tricycles powered by hand cranks instead of foot pedals. They're used by riders with spinal cord injuries, amputations, or other conditions that prevent leg-powered cycling. Adding electric assist to a handcycle dramatically extends range and reduces fatigue, making longer rides and hillier routes accessible.
Handcycle conversions share many considerations with recumbent conversions (long wheelbase, unusual BB position, torsional flex) but add the complexity of hand-crank-specific PAS sensors and the need for very smooth power delivery. The rider's hands are already busy cranking — sudden power surges are dangerous.
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Tongsheng TSDZ2B with a true torque sensor — power responds to how hard you pedal, not just that you pedal. Game-changer for natural ride feel.
Final Thoughts
A converted handcycle opens up cycling to riders who thought they'd never ride again. The torque-sensor TSDZ2 provides smooth, predictable power that works in harmony with hand cranking. Get the right kit, take your time with the install, and you'll have a machine that restores the freedom of cycling.