On a normal day building bikes in my garage I got a visit from an old man. He ask me if I can put a motor on his bike. I told him i can do just about anything to a bicycle and a motor wouldn't be a problem for me. About a month later I here a knock on my door and the man was holding a box he said I want this on a bike and handed me a hundred and twenty five bucks. I went to my garage and opened this box up I was in shock to see a motor that bolted to a frame. This motor was bad $$$ 212cc with a transmission! I put that motor on in a few hours I wasn't happy with the hardware that held the motor mounting plate on but in my excitement I trucked on with the build just to be able to test it before the sun went down. The bike I used was a 22 inch frame richy with 27 inch road tires it ran great and was tons of fun scary as **** going fast. I put a set of full fenders on a light and speedometer got it up to 38.7 mph and could of went faster if the vibration wasn't so bad. I gave the bike back thinking I would never see it again but surely enough the rear mount snaped and this poor old man could not fix it. I replaced the bolts with nice m12 hex bolt and red lock tight and I made a rubber motor mount for the plate out of a snow blower roller pad and used better studs to go in the cast plus I cut the side wall out of old dry rotten tiers and put them inside the good tiers with the tube. What a difference in handling and topped it out at 43.8 with minimal vibration except for the handle bars. So I took the rings off the threadless fork and added a heater hose in place of two ring's this helpful rubber shim made this ride smooth and comfortable. If I was able I would've geared the motor with a much bigger sprocket but for what it's worth it wasn't mine to say.....I gave the bike back with a offer of 300 bucks but he refused and told me to come here to this forum. I did so looking and found that a two stroke was right up my alley I bought a jeet 80cc with a volicity stack a super charged cdi and 12v generator. Now I'm thinking I should've looked more or made some aqaintaines experienced in this new found glory of motoring...did I do good on the motor?