Re: What got you into all this trouble?
My son's Power Wheels Escalade got me into motorized bicycling! I was looking into ways to make it faster (ended up just going to 18V and he moved into electric scooters and such before much longer). One thing people do on higher powered rigs is go with scooter controllers and stronger electric motors going to a sprocket on a live axle, vs. the Power Wheels plastic gearboxes...
So searching for info on scooter controllers and sprockets led me to this forum and my jaw dropped! Motorized bicycles??? Wow!!! Talk about an unfulfilled dream coming true!
Shortly thereafter I had completed my first build, a DIY weed eater motored friction drive on a Mongoose XR-75 mountain bike. Sold that to fund my China Girl build on a Cranbrook frame, which cracked and was transplanted to a Schwinn Heavy Duti frame. Then the engine blew and I sold off the pieces and am currently planning my next build.