davey_flyer

My Feedback: (4)

I'm trying to setup my ATV for my throttle servo HS225 and I'm running into a bit of difficulty in reducing binding. I can reduce the binding by cranking the ATV down to 40% on downstick and 70% on upstick but I'm wondering if I'm losing precision and/or speed of the servo? Can anyone offer some advice? Also, I've cranked up all other servo ATV's to 140% and then adjusted the linkages to allow for more movement - is this ok? It seems to work great....

Thanks

JohnW

My Feedback: (6)

Losing precision? Yes.

Speed? No. If anything you may actually be gaining effective speed (servo is still running at the same speed) because the servo has a smaller arc to travel from idle to WOT. Doesn't really matter anyway because engine spool-up is much slower than a servo.

To gain some precision, you can try to adjust your linkages, servo arms, etc. If you are getting binding consider using a flexible push rod or put bends in the metal rods such that the binding is eliminated. If you are stuck and you can't do anything mechanically with you setup, don't worry. Don't need gobs of torque to move the throttle. You'll be fine.

JohnW

My Feedback: (6)

Forgot about your second question. Cranking ATV's to max and then working backward is fine practice. I do it myself. This way you are starting at the maximum resolution of the radio. There are some reasons why you would not want to do this on some planes, primarily mixes, but for the most part this practice is fine. I solve the overthrow issue with mixes by setting the ATV to limit as opposed to normal. This way the surface is never commanded to go beyond the ATV. Just pay careful attention to your mechanical setups. Be sure they are solid, low play, good mechanical advantage for the servo, etc.