theamusingnerd
New Member
Hello! I am building a drag bike. So far, I have a Dax RT carb, I am putting a tuned pipe on it and a Puch 70cc head. Do you think a 50cc head would be better? My only concern is that in Phoenix, we can only get up to 91 octane gas. Also, what size rear sprocket should I go for? I can't decide between a 40, 39, and a 36. I need the best compromise between acceleration and speed.