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Old 07-25-2013, 04:44 PM
dumpstercrusher dumpstercrusher is offline
Motorized Bicycle Elite Member
Join Date: May 2013
Location: Glen Burnie, Maryland
Posts: 261
Default Re: Fred's (Cr Machine) motor Ordered!

Originally Posted by mapbike View Post
Nice looking bike, your biggest speed killer in my opinion is the stock exhaust pipe you're using, I don't care if it has a hole in it or not it still take lots of power away from these engines, biggest power and speed robbing thing you can have on one of these HT engines in my experience, my oldest bike had a free flowing exhaust I had made up on it and it cruised really nice at 30mph, I took that exhaust off and put a stock pipe on it that was completely wide open inside, NO cat junk in it at all just open chamber and the cruise speed dropped 5mph instantly on this bike and the low end power fell of dramatically, stock pipes suck all the way around in my opinion, put a SBP expansion pipe or one of the JNMotors expansion pipes or something that you can match port the exhaust flange to the engine with that isn't so restrictive and you will see a big difference in power and I'll bet you'll see a few mph top speed increase also, I did on all mine when I got away from the stock pipes.

yea i know, i used to have my old motevelo/spb expansion chamber but i wanted to change out to arrow motorized torque 2 exhaust. should be coming in the mail any moment. Damn, i have high hopes for my motor lasting that long then lol but my BIGGEST problem is my fuel empties out so fast cuz its short due to the fuel getting stuck in the line.. i need to find a way to fix this so i can ride for longer periods of time without running out of gas.... i know has a petcock that is at a 90 degree, maybe that could solve my issue with a new fuel line to help but i just done know. my motor sits to high for the line to be like it is on a bike with a fuel tank
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