logerkev

Hello everyone
been out of the hobby for a 20 years and started building again, wondering about using HS 81 servos on throttles one will be my magnum 120 4 stroke other will be a saito 220. i have 4 bran new ones kicking around so was thinking could cut some weight there.
Thanks
Kevin

AndyKunz

That's the wrong place to save weight. HS-81 servos have very small gearfaces. Throttle linkages have a lot of vibration on them.

Get yourself a standard-sized servo, one with big gears, to take that abuse.

I have a 45" plane with 4 HS-81s in it on the control surfaces. The throttle servo is a Tactic TSX25 - much larger, much stronger.

Andy

Truckracer

My Feedback: (19)

I agree completely with Andy! I own many HS81 servos that were once used on small 1/2A pylon racers. They are delicate little servos with tiny gears. If you must use a small servo, there are much better choices, even in the Hitec line.

logerkev

thanks guys