Hello, I think this is my first time posting. My friend and I like building and riding motorbikes. Right now I am on my 4th one. The first 3 went fine. We have been using the Raw 66cc slanted engines. This bike I am working on now was working just fine until a few days ago. There is probably only 20 or so miles on it. I am using ~80:1 Chevron 87:Opti-2, NGK B6L spark plug, larger fuel filter, black fuel vapor hose instead of the clear stuff, and I made sure everything was nice and tight. Head bolts were gradually tightened in an X pattern to 12 ft. lbs. Lock Tite was used on all the usual fasteners, except the magneto - haven't done those yet.
I don't know what is going on with it. I don't see any leaks. The bike rolls free with the clutch disengaged and the back wheel skids once the clutch is engaged. The exhaust muffler is unrestricted, same as the intake. All wires are secure and taped off where metal is showing.
At first I thought it could be a fuel delivery problem like a stuck closed jet or something. But I opened the line and pumped the primer and sure enough it flowed into the bowl. So I know it gets air and fuel. When it does run, it runs strong and fast. Sometimes. Other times it ranges from weak to strong. I just can't explain it.
I measured the resistance of the wires and it was only very slightly higher than what the manual says. I don't see how it would matter since it runs strong as **** when it wants to.
One piece of advice I can stand by is never use any tools to screw on the cap of the throttle to the carb. You might warp the slide's cylinder and the slide will get stuck. Very cheap material we are dealing with here.
Something I would like to have is a washer type wire connector for the green ground wire that could actually fit on an exhaust stud or a splash guard screw. Right now I am just using a bent U-type connector on the exhaust stud. But I think it only matters while using the kill switch anyway. Haven't had this problem with my other 3 builds. I wouldn't have been able to get as far as I have without this site. I have learned a lot already.
It just seems like I am striking out right and left lately. ****, I just got turned down for food stamps because I am in college full time. I guess they figure I can get financial aid for that. Well I already spent that on engine kits and supplies. School is almost out, can't they cut a guy some slack?
Thanks for your input,
Pat
I don't know what is going on with it. I don't see any leaks. The bike rolls free with the clutch disengaged and the back wheel skids once the clutch is engaged. The exhaust muffler is unrestricted, same as the intake. All wires are secure and taped off where metal is showing.
At first I thought it could be a fuel delivery problem like a stuck closed jet or something. But I opened the line and pumped the primer and sure enough it flowed into the bowl. So I know it gets air and fuel. When it does run, it runs strong and fast. Sometimes. Other times it ranges from weak to strong. I just can't explain it.
I measured the resistance of the wires and it was only very slightly higher than what the manual says. I don't see how it would matter since it runs strong as **** when it wants to.
One piece of advice I can stand by is never use any tools to screw on the cap of the throttle to the carb. You might warp the slide's cylinder and the slide will get stuck. Very cheap material we are dealing with here.
Something I would like to have is a washer type wire connector for the green ground wire that could actually fit on an exhaust stud or a splash guard screw. Right now I am just using a bent U-type connector on the exhaust stud. But I think it only matters while using the kill switch anyway. Haven't had this problem with my other 3 builds. I wouldn't have been able to get as far as I have without this site. I have learned a lot already.
It just seems like I am striking out right and left lately. ****, I just got turned down for food stamps because I am in college full time. I guess they figure I can get financial aid for that. Well I already spent that on engine kits and supplies. School is almost out, can't they cut a guy some slack?
Thanks for your input,
Pat