That is truly cool!! Thanks for the vid, can you please show pics of the switching device underneath when you break it down? I would love to see how it contacts. Why not see how well the switching does until it breaks, and then tear it down? Fantastic!! You are having to much fun John, at least we can share in the pictures.
Hey, is that motor from a scooter that has a range setting or speed? Is this how that function is carried out?
It's from an Erato 2kw 2 speed scooter sold 2-3 years ago. For a while you could pick up the motors and controllers new as replacement parts for $300 and $200 respectively including shipping, but that was before I knew anything. I've been looking and haven't seen any other 2 speed motors. This thing has one aluminum cover, but the rest is steel and cast iron, so a scooter motor with a disk brake instead could be a good bit lighter. To find a good one, I'd look in the scooter forums to find those where the customers are happy with the range and speed. Those are likely to have the better designed motors. Then contact the companies to find out the motor weight.
Regarding the switching mechanism, it's all visible there in the video. That triangle loop of wire closest to the axle is the connection that forms the Delta, and WYE is when the other contacts are made. All the winding terminations are on that side.
If I was interested in just running it near the designed power, then I might give it a go as is, but the wiring harness has to be redone anyway so I'd want to go for the gusto. I have other hub motors at half the weight if I wanted to try moderate power in a stoke monkey type alignment. Plus I have the little ventilated Fusin that's 90% done too. I'm not a let's try this to see if it works type, because I'm no tinkerer. I like to build and use, and then build something else. I still have to learn some stuff about metal working with cast iron, and I have some other projects ahead of it in line.
First, I have to get my red rocket back up and running with a smaller wheel and ventilated housing, so that 15hp may turn into 20hp and run much cooler. That kind of performance is addictive, and is really amazing with the silence of a hub motor. Hopefully the coming projects with hub motor - chain - wheel prove to have similar sonics, because I'm not sure I'll like the vacuum cleaner sound. I'd much rather have to lose 10lbs for an identical power to weight ratio, than have a noisy ebike.