A while back, I modified my throttle shaft to allow my carb to open all
the way. It worked well, for a while. I noticed that it still wasn't
going WOT, so I moved the ball fitting a bit closer to the center line
of the throttle shaft. Much better.......until last Saturday. I was
riding along and the throttle stuck in the idle position. I jury rigged a
fix and was able to finish the ride. Upon getting home, it was evident
that the pull on the cable was almost passing across the center of the
shaft. No good, at all. I brainstormed it, for a while and decided that I
needed something like most bikes have, a circular drum that allows the
cable to pull, regardless of the distance from the butterfly shaft. I
tossed a hunk of aluminum in the lathe and whipped up this gizmo. It
screws to the throttle shaft via a sheet metal strap that I riveted to
it. The cable slips in a radial groove on the edge of the drum and is
secured in the open hooked hole. After a few tries, it works slick as
snot on a brass doorknob. I only had to deepen the groove a tad more to
get WOT. The deeper the groove the quicker the action.
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