thanks , i built this design befor i even new there were motored bikes out there , im proud of it , the aluminum motor mount can use many diff motors , anf fits most bikes. see more pics at www.thescooterguy.org there are links to youtube vids there 49cc bike and 36cc bike , and there will be another tomorow . just finished a very nice trek with a 49cc high compression cag motor , havnt started it yet , just going to do that now .