ORIGINAL: karolh
By the time the throttle stick is at about 1/3 of it travel my engine is at approx 75% full power, making the throttle near idle very sensitive to even the smallest of movements. Other than adding some negative expo to the throttle is there any other way of reducing the throttle sensitivity.
Karol
If you don't have a multi-point mix free, and you can't mix THRO>THRO with expo.... the easiest is to mechanically introduce expo by having the lowest part of the throttle stick movement move the servo at the most extreme end of it's rotation, with the arm offset at least one "spline", or maybe two, in the direction of "low throttle". Adjust pushrod length as needed, so that as you're coming up off idle the servo is moving through it's maximum ARC of the radius; this is the least amount of linear movement you'll get.