Motorcycle paddock starter

[Sterob]

I'm not sure your treadmill motor would last too long, even if you are using it in short bursts.....
I'd be tempted to use a a step down transformer and then rectify and smooth the output.
Do you know what sort of power you would need to start a bike?

If you use 180 V or just below, that will give you the best chance of success, I guess.

Its all specultion, of course....lol