Pedal return spring

[JasonL]

Great, thanks David. I was a bit concerned about the throttle as I've heard the throttle can stick, but the posts I read seemed to relate to bike engine builds. I prefer to have to use extra pressure on the accelerator in any case.

I won't bother with the others though, as modifying the torsion spring was a real pain.

[Badger]

I think the best thing to do is to put together the system and try it out; in my case I decided I do need a return spring, but my system is different from most.
I'm going to try one of these next weekend:
Tension Spring

[JasonL]

Thanks Badger. It's a bit early for me to test it out, but I will do.