GAFarmer2 said:
I have been "toying" with that idea for some time.
It started a three years ago when I met a man named John Howe. He is a retired engineer that spends his time gardening at his home in Maine, inventing, and writing/speaking about the oil crisis. As a way to grab the attention of pedestrians at a fair I attended in Maine he brought his '48 Farmall Cub. It brought in quite a crowd. You see, his cub is powered by the sun. He has a fairly strong DC motor attached to the back of his tractor and a belt attaches to his PTO. He picks a gear, engages the PTO, and operates the tractor. The controller allows him to choose whichever speed he would like to travel at ...changing gears allows him to run the motor more efficiently. He knows his electric cub is more powerful than the original. He uses it for ground engaging, cultivating, towing, plowing snow, etc. Here is a picture of
John and the tractor and an article about
many electric tractors including John's.
There is a guy in PA what was inspired by John's electric cub and repowered an
Allis Chalmer's "G" . It was so successful he applied and won a grant to build a second electric G. Neat thing is that he shows you step by step how he made the G electric. The creator also states that his much more powerful than the original.
OK back on topic...
I'm about to get an old David Bradley from a friend for free. It's been in the rain for a while, and I doubt the motor will turn over. I am considering making an electric Bradley. I'll use used golf cart parts. If it turns out to be underpowered I'll just use it for simple tasks. Considering the motor is powerful enough to move a golf cart 20 mph, and I'll be gearing it down to 5-6 mph, I don't think that power will be a problem though. Either way it will be a fun project.
I doubt repowering a two wheeler with a new gas motor would be very difficult either.
I am fairly sure that this wasn't the answer you were expecting, but maybe it'll help.
Have a good one
-Jim