Tri-Motor Handcycle Build w/ dual Grin All-Axle rear motors: All-Terrain Access

I upgraded a handcycle with a mid-drive motor and two Grin All-Axle hub motors on the rear wheels to create a tri-motor beast built for tackling terrain that would otherwise be inaccessible to many disabled riders.

One of the biggest limitations of front-wheel-drive handcycles is losing traction on steep gravel climbs. With two All-Axle motors driving the rear wheels, this build puts power where it matters most. As the incline increases and weight shifts toward the rear wheels, rear-wheel traction improves, helping riders climb steeper and looser terrain with greater confidence.

Another game-changing feature is regenerative braking controlled through reverse pedaling. Once regen mode is engaged, riders can modulate their downhill speed simply by changing the position of the crank, providing intuitive control on steep descents without relying solely on conventional brakes.

For adaptive cycling, this combination opens up exciting possibilities: more capable climbs, better downhill control, and access to places that might otherwise be out of reach. The versatility of Grin's All-Axle system makes it an incredible platform for pushing the boundaries of what's possible with electric-assist handcycles.

Anybody with a disability can sign up for a free lesson and try this handcycle out at www.AbleBodied.org