Re: Would this work?
The SBP kits will do that for you and there have been lots of builds done as your thinking. Dig around. Lots of info and some incredible builds using the bikes gears. Think the Titan is right side drive but cuts into the room you would have to reduce the gearing. Lots of ways you can do this.
I am waiting for some one to come up with an automatic rear hub that could handle the torque! Well beyond me but man, that would be incredible.
Build some thing cool!