whizzer poor low-end torque

[Kep1a]

PS; Check this thread for your pivot bolt issue. I have the auto clutch but the slip clutch would benefit from similar improvements.

http://motoredbikes.com/showthread.php?t=17941

Don't forget to lock tight the nut allowing you to leave the bolt the ability to pivot freely without coming loose.

 

[wes]

fuel starvation??

I want to thank all of you first off for all your help. I reset the main jet and adjusted the carb and settled on the 86 jet. It really turned out to be that i had some junk in the tank that was block the outlet enough that when i got to high rpms it would starve. also some of the power loss was from a head that wasn't quite flat in some areas. after some wet dry paper and glass plus some elbow grease the fit is great and noticeable power increase.

Now i'm back to a burbling sound at the 40 mph range and it almost died once. its like no fuel again. i check the tank and outlet. no blocking. the float is set at 23mm or around 7/8 and this is the 22 carb. new filter. other wise it runs great, but this is frustrating. every once in awhile it coughs, but not predictable. i might contact Bill G. for the hotter ign. i also want to try setting the timing ahead, but had trouble popping the flywheel off for drill and tap. maybe you'all have run into this prob. include the bike pic. you notice i added a vent tube to the fuel cap to avoid vapor lock. w. should add that over 40 is downhill, or tailwind, plus high octane... wet i weigh 170. gotta love a whizzer.

 

[bill green]

Hi Wes I would check your tank vent next to make sure your not vapor locking at full throddle....Bill

 

[alberndt]

Weak low end power and no carb adjustment

Converted my auto clutch to a slip clutch, really like the way it runs, however now finding that I have weak low end torque and wants to bog down on hills. Tonight I rode about 15 miles and when got back to the garage it was idling fast/like too fast/tried to adjust the idle speed slower and there is no adjustment, keeps the same RPM.
Any hints on the idle speed and on the torque/drilled out the restrictor plate but done nothing else. Appears when had the auto clutch on, was slipping the daylights out of the belt from the engine to the auto clutch as well as clutch slipping.

alberndt

 

[Quenton Guenther]

Hi alberndt,

Check for leaks around the intake manifold. An easy way is to spray WD40 around the intake gaskets with the motor running. If you detect any changes in RPMs it means there is a leak.

Have fun,

 

[Kep1a]

Mine has an idle of almost 2100 rpm when on the stand and the brake is off (wheel spinning).

I pull in the brake or put it on the ground I get 1100 to 1150. So I'm thinking that may normal on your conversion to a slip clutch.

You should be able to idle it down though. Check the throttle cable to be sure it is not so tight as to hold the slide in your carburetor up even when the idle screw is allowing it to go lower. That's all I can think of.

 

[RdKryton]

You should be able to idle it down though. Check the throttle cable to be sure it is not so tight as to hold the slide in your carburetor up even when the idle screw is allowing it to go lower. That's all I can think of.

That is what I was thinking also.
Good luck.

Jim