Hello all out there in motorbicycling.com
Sorry I haven't been on the board much lately. Business has been good building bikes and motors. I had a crash on new years day, it was a dumb mistake and I broke some ribs and my collar bone. Slowed progress on the high speed projects but I am trying to keep the things going, With the help of my wonderful wife things are getting done again just a bit slower.
Anyway I was not sure where to post this bike. I built it to run motors and test piston designs, porting, pipe shapes, just everything in the quest to one day attempt a speed record. I have installed China girls, HuaSheng's, and 79cc Predator motors in these so I figured this one will in time probably see all those motors and maybe more so it's the best test bike for me.
The bike is a Kulana frame and fork, zero offset stem, almost flat bar, 24x3 rear tire on a simple free wheel rim, 26x1.125 front with a caliper brake, 5" set back seat post, short crank set, and no chain tensioners either side done with a half link pedal side, a lot of small adjustments, and a thin shim under the rear motor mount.
The motor is not the motor I build in house and sell. It is a cheap online motor traded in to me. I wanted to build a cheap kit motor to the best of my abilities and see how much power I could make. I did this as a reference point for when I get customers asking me to modify their motor.
The crank end play was decent and balance is not great but I wanted to experiment with making the lightest pistons I could and have them hold together for an acceptable time so this was ok for this motor. I brought port timing to the exact specs of my in house kits. I got the port shapes nearly identical to my best and developed some new techniques to get the same finish throughout the ports. Stock intake manifold cut and port matched, no head gasket and I worked the dome by hand until it cleared the piston at TDC, heavily ramped, notched, drilled and slotted piston, 3 prong kit spark plug, quite a few more little tricks here and there and what I believe will be a final shape to my own expansion chamber design.
I will really try to get more pics up and when I can get a little run time on it and get the rings seated in I will post up some performance numbers.
Lee Wommer
520-808-5731
Happy Motoring!!!
Sorry I haven't been on the board much lately. Business has been good building bikes and motors. I had a crash on new years day, it was a dumb mistake and I broke some ribs and my collar bone. Slowed progress on the high speed projects but I am trying to keep the things going, With the help of my wonderful wife things are getting done again just a bit slower.
Anyway I was not sure where to post this bike. I built it to run motors and test piston designs, porting, pipe shapes, just everything in the quest to one day attempt a speed record. I have installed China girls, HuaSheng's, and 79cc Predator motors in these so I figured this one will in time probably see all those motors and maybe more so it's the best test bike for me.
The bike is a Kulana frame and fork, zero offset stem, almost flat bar, 24x3 rear tire on a simple free wheel rim, 26x1.125 front with a caliper brake, 5" set back seat post, short crank set, and no chain tensioners either side done with a half link pedal side, a lot of small adjustments, and a thin shim under the rear motor mount.
The motor is not the motor I build in house and sell. It is a cheap online motor traded in to me. I wanted to build a cheap kit motor to the best of my abilities and see how much power I could make. I did this as a reference point for when I get customers asking me to modify their motor.
The crank end play was decent and balance is not great but I wanted to experiment with making the lightest pistons I could and have them hold together for an acceptable time so this was ok for this motor. I brought port timing to the exact specs of my in house kits. I got the port shapes nearly identical to my best and developed some new techniques to get the same finish throughout the ports. Stock intake manifold cut and port matched, no head gasket and I worked the dome by hand until it cleared the piston at TDC, heavily ramped, notched, drilled and slotted piston, 3 prong kit spark plug, quite a few more little tricks here and there and what I believe will be a final shape to my own expansion chamber design.
I will really try to get more pics up and when I can get a little run time on it and get the rings seated in I will post up some performance numbers.
Lee Wommer
520-808-5731
Happy Motoring!!!
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