At the Featherly campout this past weekend I was discussing with Ken the way an accelerator pedal should work and
feel. It should all work very smoothly and it should return to its "rest" position without any binding whatsoever and rather quickly too. If you have to use "extra" and/or heavy return springs, there is a binding problem that must be addressed and taken care of. It should all work so easy that the single spring on the carburator will be enough to return it to the "rest" position. Not to mention the dangerous condition that a binding accelerator pedal can cause, when you have to heavy a spring in order to return it to rest, it takes a "
heavier" effort on your foot to get the bus going. This condition in turn makes you "
feel" like the engine has no power since it takes so much effort. However, once you fix the binding problem and it works more "loosely", you'll be amazed at the power "gain"!!! It's all in your head, but that is the way it should all work.
There's a very good thread in thedrambadotcom's forum showing some pictures of the correct way to assemble the pedal linkage up front at this
Link.

Also, the whole mechanism should work in a manner that when the pedal is all the way down to the floor, the carburator throttle should be open all the way to its stop point. When we looked at Ken's set up, the pedal to the floor had the throttle open only half way. Of course this condition gave him a "
feeling" of having a powerless engine. I'm sure once he corrects that issue the change will be extremely noticeable. Matter'O'factly, every single time I drop and re-install the engine I always make sure that the pedal motion opens the carbs fully before taking it for a spin. I simply place a
brick or some such item on the pedal then go back and verify the throttle position. If not open all the way, I'll adjust it until it does.
