Re: Newbie looking for some help on new build
If your bike does not have a rear suspension and a pretty open section for the engine, then it should not be a problem at all. Check out the mountain bike and road bike build section of the forums for tips.
If you do have a rear suspension, this will change the chain tension as the suspension compresses over bumps and you have to get creative with the chain tensioner to make it work.
As far as installing a motor with little experience with motors, that can be tricky. Some installations require quite a bit of modification to the mounts and bike, some bolt straight up. Some motors need to be torn down and cleaned up, ported, etc in order to run well, some do not. It would definitely help to have someone mechanically inclined to work with you.
If you could post a picture of the bike you are working with, that would help.