My current project is mounting a Briggs and stratton Etek up to a 20" Cromoly trek. I'm hoping to have a beast on my hands.
Here is the latest picture I have taken with the motor mount pretty much done:
Here is a link to all the specs at evalbum.com:
http://www.evalbum.com/1618
Performance should be similar to the "Insane-a-cycle":
http://www.electricrider.com/custom/index.htm
I'm trying to keep the center of gravity as low as possible with the battery down below the bottomtube, and the profile slim and aerodynamic. I'll get some updates on here as I make some progress, I just need to finish the one more battery box, get it wired, and redo the sprocket which isn't quite true.