ORIGINAL: dirtybird
ORIGINAL: BaldEagel
Forgett all the diagnosise of the position of the wires to the throttle servo, you are using a system that does not accept RF interference, it can only be direct electrical spikes through the wiring or a bad servo. My guess is a servo gone down, the amount of vibration comming throgh the operating rod too the servo and the heat etc, is going to cause a throttle and or choke servo to go occasionally. I tend to use an Analoge coreless for both and change them at the end of each season.
Mike
A coreless servo is a bad choice for a throttle servo. The delicate armeture is very sensitive to vibration.
Chose a servo with dual ball bearings and a three pole motor. Nylon gears are probably best as they would tolerate vibration better than metal.
Take a look at the digital sport servo. It would probably give you the best operation and reliability.
As for the interference go to 2.4 ghz and forget it.
This is where you and I will dissagree and you also disagree with Quique who I think knows a thing or two, QS recommends not to use a digital servo as its constant reference to its certre or operational point will drain the battery as most petrol engines have sprung throttle levers, oh yes I used coreless servo's in my competition helicoptors for years prior to digital servo's appearing, so I think the vibration issue is a non starter.
But I agree about 2.4Ghz
Mike