Not a budget project. Those are fairly pricey components compared to everything that's available for building an electric 2-wheeler.
I'm planning to build a whole vehicle for just the amount of money he probably spent on the Alltrax and motor.
I've been thinking of doing something like that to a old bike frame I have. But, it would probably need some kind of registration before hitting the road. I guess that's the advantage of using a previously titled vehicle.
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When I die, I would like to go peacefully, in my sleep, like my grandfather did. Not screaming and yelling like the passenger in his car.