Thank you for your reply, I appreciate the help
Trike is steel construction with no suspension. Weight of rider is 220 lbs and speed desired is 25 MPH. Live on an island, so mostly flat riding on paved bike trails.I own a 40 ft. class "A" motorhome with a motorcycle lift mounted on the rear and plan on caring the trike around to parks located on lakes which usually are hilly with unpaved surfaces. I like the idea of a thumb or twist throttle rather than the sensor. Caliper brakes on front wheel and disk on rear axle. Only way to power this is with a front wheel as the rear is too complicated with 14 speed derailer. 2 front 7 rear.
Thanks again.
Scott Pullon
Hilton Head Island, SC