I purchased the Hitec Servo HS-7954SH for my Tekno SC410. I have it plugged into a previously used Airtronics RX 461 RX and Tekin RX8, my radio is Airtronics MT-4. Here's the crazy part - when I turn left or right, I get a 3.8 Voltage error on my Airtronics MT-4 radio. I noticed my RX8 light "dims" when going right only. It's a fully charged transmitter lipo, have tried two different lipo packs in the car. I previously had used Savox with the same and didn't have a problem. Thoughts?


•Size Category: Standard
•Type: Digital
•Torque: 333 oz @ 6V, 403 oz @ 7.4V
•Speed: 0.15 sec/60 deg. @ 6V, 0.12 sec/60 deg. @ 7.4V
•Bushing Or Bearing: Bearing
•Bearing: Dual

Try a different servo. Process of elimination.

My guess is that the new servo is pulling more amps than the RX8's internal BEC can deliver. It may not be the fault of the servo. Try installing an external BEC.

I realize you've been around awhile and know what you're doing...but have you checked for binding and set the end points correctly?

Yes been around for awhile.

Yes I have checked no binding. Endpoints are setup correctly. I will try a different servo - which was next on my list to try.