Re: What kind of engine could you put in this puppy
Well I would avoid using that frame just for the reason that it does not have a seat post. That and the vibration from the motor would tear it apart in no time.
My BIke is made out of steel and I think a little overkill is a good idea when your putting a motor on a bike. The bike I own is based on an old SCOTT Mountain bike frame that I had to change the rear dropouts. I also had to braze new cantilever mounts on the front fork, but I did not have to do it for the rear wheel. I would not be able to modify my frame if it was anything else but steel.
I own a OX acetylene torch and a scratch type TIG.