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Reply to "WTB - JPS/CMS/Beck, etc..."

Zeffenhausen wrote: "Initially, the throttle was opening less than 50 of WOT. So I moved the end of the throttle cable to the first position of the three-hole throttle lever nearest the hex bar axis and when the pedal is pressed down all the way, the throttle plates now open to about 75% of WOT."

Ok, similar to Danny - this is a Geometry 101 exercise.  Looking at your top photo, you're now at the topmost smaller hole in the throttle lever and that gives you 75% throttle open (TO) when the pedal is all the way down.  Each higher hole gives you a different rate at which the throttles open versus the movement of the cable/pedal.

Moving the lever up one flat doesn't look promising because it will then be straight out towards the rear and will be difficult to get off-idle....The geometry would be all wrong, so leave it where it is.

The next place to look is at the accelerator pedal itself - I've seen some, especially the roller pedals, that don't seem to travel as far as others.  Take a close look a the pedal swing to see if something is preventing full movement OR if the movement can be increased.  That might be an answer.

Beyond that, the easiest solution I can see is to find a new barrel connection (Ace Hardware) with an OD that fits inside the bigger hole right at the top of the lever, and a hole that fits your peg at the end of the cable.  That will give you the maximum amount of cable movement versus the throttle plates.  

Ultimately, I would think that your pedal will then move less distance between the idle stops and WOT, so you'll then have to play with the cable length by moving the cable terminator (the peg attached to the end of the cable that fits into the barrel connection) farther into or out of the barrel to get to a compromise - WOT when fully depressed, sitting on the idle stops when no foot on the pedal.

BTW, I have a big throttle return spring (Ace Hardware) mounted between the fan shroud and that throttle arm on the hex bar to push everything back to idle - You might consider that, too.   ( can get a photo if you need one).

Please be aware that this change will, as you've already found, make your accelerator pedal feel more sensitive as a small foot change makes a bigger throttle change - you may or may not notice that.

Those are the best ideas I can come up with.  Check the pedal travel first.

Last edited by Gordon Nichols
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