Driven Pulley Analysis

Rear Axle With Motor

Final Drive using a 8 mm pitch Gates Poly Chain Carbon. There will be over a ton of pull in the belt. 

The motor attached to the rear axle frame.

the big picture

Motor is a Netgain Transwarp built by  Jim Husted. The controller is a Zilla1K, batteries are by Derek Barger and will be charged with a Manzanita PFC40 charger. Viscous Limited Slip Differential by Westgarage. Chassis is a Sylva Riot. 

Rear Axle

Rear Axle in Construction

I'm lucky to have Michel Robin working doing metal fabrication for me on this project. He built structural parts for Mirage fighter jets, so this is pretty easy going for him. This structure would have looked more attractive made out of machined aluminum plates,  but I have a liking for thinwall steel tube. It's very efficient structurally, and if you leave it in a hole in the earth, it just turns to rust.