Originally I wanted to do a friction drive, however, ive found myself riding in rain / snow / wind too often, and wisconsin is hilly, weather changes very quickly at times. becides, it should only top out at 35Mph with the 40cc. Thats not overpowered as far as im concerned, just yesterday I Peddled 30 MPH on the bike trail with knobbies at the END of my 25 mile ride. I want it to At LEAST match my sprinting speed. Already have plans for a Friction drive for my girlfriends cruiser from dax. She only rides for recreation on very nice days, and it would be easy for her to operate when im not riding with her. Next friday I should have my tanaka and the GEBE kit should be ordered by then. Ill keep evereyone posted on my Build as I make progress. after break in I might even order the power pack if the kit is still holding up by then. Wish me Luck!!