Cleverchimp Stokemonkey Human Electric Hybrid Drive
Stokemonkey is one of those rare technologies that persists in its relevance. High torque power for low speed cargo bikes. After it's release in 2007, the only large advancements have been in battery technology.
This electric bike system is simple and robust. Purely throttle powered, the Stokemonkey motor works like a stoker on the back of a tandem. When the throttle is engaged, the motor pushes a left side crankset forward giving you as little or as much pedal assistance as you'd like.
The kit includes the Stokemonkey geared motor with 16t cog, left side drive chain, Cycle Analyst display, 20amp controller, clampset to mount to your bike (please specifiy Surly Big Dummy or Yuba Mundo), left side drive single 50t chainring crankarm with 50-39-30 triple right side drive crankset (requires square taper bottom bracket).
While we would love to ship you a battery, shipping regulations are prohibitive, so this is yours to source separately. If you tell us what kind of terrain and distances you'd like to cover, we can help you pick the best battery for your situation. 48V batteries are widely available and are recommended with this system. If you'd like to run a 36V battery, please let us know and we modify the crankset appropriately.