Q
quarkdude
Guest
Hello all,
I just stumbled across this website today and am very excited seeing how many motorized bikes are really out there. I ride mine to work almost everyday, ( a 20 mile round trip ). I have gotten my speed up to 36.4 mph. Definitely moves. I have done some mods to the stock engine to get more power out of it - Albuquerque, NM is 5200 feet above sea level so more power makes it a blast to ride. I started with changing the jetting for our altitude here. The stock jet was a little too rich for up here so I tried to locate an aftermarket jet - they pretty much don't exist. So I read about someone that used silver solder to solder closed the hole in the jet and then re-drilled it. I did this and with a little experimentation found what jet size worked the best. Turns out 0.028 is the magic number for my setup. Then I bought a plastic free flow air cleaner cover for more airflow. Bought the stainless steel intake mainfold for more flow. And lastly I read about taking the baffle out of the stock exhaust pipe and cutting it down to sort of mimic an expansion chamber exhaust. Really noticed a difference when I did that. Does get a bit louder when you do this. So all together all the mods get this bike up to about 35-36 mph with a 44 tooth rear sprocket. I'll post some pictures of it in the gallery. It is a black 1995 Diamond Back mountain bike with a black gas tank.
......................Bill, from Albuquerque
I just stumbled across this website today and am very excited seeing how many motorized bikes are really out there. I ride mine to work almost everyday, ( a 20 mile round trip ). I have gotten my speed up to 36.4 mph. Definitely moves. I have done some mods to the stock engine to get more power out of it - Albuquerque, NM is 5200 feet above sea level so more power makes it a blast to ride. I started with changing the jetting for our altitude here. The stock jet was a little too rich for up here so I tried to locate an aftermarket jet - they pretty much don't exist. So I read about someone that used silver solder to solder closed the hole in the jet and then re-drilled it. I did this and with a little experimentation found what jet size worked the best. Turns out 0.028 is the magic number for my setup. Then I bought a plastic free flow air cleaner cover for more airflow. Bought the stainless steel intake mainfold for more flow. And lastly I read about taking the baffle out of the stock exhaust pipe and cutting it down to sort of mimic an expansion chamber exhaust. Really noticed a difference when I did that. Does get a bit louder when you do this. So all together all the mods get this bike up to about 35-36 mph with a 44 tooth rear sprocket. I'll post some pictures of it in the gallery. It is a black 1995 Diamond Back mountain bike with a black gas tank.
......................Bill, from Albuquerque