I have taken a childs ride'em "big Foot" truck, (the ones that you would get at Toys 'r' us and so forth) and converted it to remote control using cheap transmitter -receivers from another toy. Very successful. Now I wish to remove the electric motor and replace it with a gas engine. I was wondering how (rather inexpensively again) would I control the throttle on the engine with a servo, where I can micro adjust it's rotation of the servo to increase or decrease the throttle action as needed.
TIA