Hey guys my G-20 has a plastic throttle arm and the servo has a plastic arm and if I use plastic connectors on each end is it OK to use a metal push rod. I only ask because the plane had glow in it and the push rod fits perfect with the G-20 and I would not like to buy something if I did not need to.
And I am running 72 for the Radio!

If the servo travels are adjusted correctly for the throttle travel available at the carb, why not? Nothing breaks if nothing binds, right?

BTW, I use the nylon servo arms an almost every one of my gassers.

TOM everything works great. Have not run it yet, but all the throws are good and no binding. I was more concerned with interferance from the Ignition. I have 3 gas planes and this will be my 4th but the others all have non metal throttle push rods. I just heard about all the interferance when i first got into gas by all the guys from my field. So i have been careful of this. I just hate not to use something that is already setup!

It should be adequately insulated with the plastic arms at both ends. Play it safe though, and please do remember to do an engine on/off range test, with varied throttle settings.

I always use a non metalllic rod on ignition engines.

Might be carbon fiber

or the golden rod Black and white flex tyoe.