Sticky throttle is going to drive me to drink....

[danielzink]

I've read up....apparently the "sticky" throttle is a known issue with these bikes...

I thought I'd try to remedy it...all to no avail...

New slider and throttle tube from Thailand...silicone grease...graphite spray...polishing and grinding any and all burrs of the inside of the throttle tube...filing the aluminum slider plate...

I put in a good 4 hours today...and the !@#$ thing still won't return...

has *anyone* gotten the slide to work smoothly ?

/rant off

Dan

[LOUD MOUSE]

Add your location.
Are you sure the problem is the carb and not the cable or grip? ....................lm

I've read up....apparently the "sticky" throttle is a known issue with these bikes...

I thought I'd try to remedy it...all to no avail...

New slider and throttle tube from Thailand...silicone grease...graphite spray...polishing and grinding any and all burrs of the inside of the throttle tube...filing the aluminum slider plate...

I put in a good 4 hours today...and the !@#$ thing still won't return...

has *anyone* gotten the slide to work smoothly ?

/rant off

Dan

[mike1969]

Dan, They won't snap back like newer bikes. The best you can hope for is a slow return. Most of the time I would just roll the throttle back manually. Did you try the nut and screw adjustment on the underside of the throttle?

[danielzink]

Add your location.

Fixed.

Are you sure the problem is the carb and not the cable or grip? ....................lm

Yeah.

Freshly rebuilt carb....it does the same thing with the throttle tube with a grip on it or a bare throttle tube.

Both sliders do the same thing (stock and brand new).

Cable works dandy..if I pull on the ball end everything works smoothly and snaps back like a dream...

Dan, They won't snap back like newer bikes. The best you can hope for is a slow return. Most of the time I would just roll the throttle back manually. Did you try the nut and screw adjustment on the underside of the throttle?

Yes as well....tried *removing* the nut and grub screw completely all with no joy...

Thanks for the help fellows.


Dan

[DianneB]

I fought with that on my '67 C77 and came to the conclusion that only the addition of a stronger spring would cause the throttle to close on its own.

Personally I DON'T like that. I swapped out the bars and put on an aftermarket throttle.

[mike1969]

It's like Dianne said. You have a very weak and thin spring to overcome all of the friction of moving parts.
The newer bikes have a pull spring and a separate push spring which work great. These older bikes just don't have the capability.

[Nick]

I stretched out the spring.

However, you must ensure that the slide can move freely inside the carb. If the carb has been over-tightened it can warp, causing the slide to bind, usually at the top of its travel.

Slide binding can also be caused by build-up of gunk (for want of a better word) on the surface of the slide and interior of the slide bore.