yup.. Maarten is right.. To bad , but to make it work you should change the frame..
Guess you forgot that the belt moves in the pulleys when the engine revs..
Nice concept though..
I wonder how you are going to mount the vork. Because of what reason did you use aluminum? If you are using it because of the low weight of the material you could easily took of alot of alu used in the frame.. If you just wanted to create a ''futuristic'' looking machine thats never going to do drag races anyway you did a nice job with the looks..
Good luck with it.