Extreme cogging with Quark 125B Airmaster + Futaba 3PK?
 

I've got a strange problem with my Rustler VXL. My setup is: Velineon brushless motor, Quark Airmaster 125B, Turnigy 5000mAh 3S 20C LiPo geared 28/86. And since a few days I'm using a Futaba 3PK 2.4GHz Fasst system to control it. But before I only had sometimes cogging, almost never. I was using a cheap Acoms 2.4GHz transmitter + receiver. But since I got the 3PK it can cogg for an unlimited time if I just push the trigger very slightly.

So, I've got no changes in my setup, only change is a cheapo Acoms 2.4GHz rx/tx to a very expensive Futaba 3PK 2.4GHz Fasst rx/tx. Isn't this a bit strange??? What am I'm doing wrong?

stop pulling the trigger very slightly!:lol:

adjusting the "deadband" on your radio to a smaller one might help.

you did recalibrate the esc for the new radio, right?

the cheap radio just sent more pulses to the reciever with less input than needed with the new radio, but with all the adjustability of the futaba you should be able to gain similar performance.

if adjusting the deadband doesn't help, it's possible trimming the throttle a little forward could help, but too much and the esc will always see partial throttle and probably fry.

time to read the manual!

The esc also has some adjustment for narrow or wide dead band width, that may help a little.

Are you using mechanical brakes? I used the airmaster in an e-maxx and cooked it 'cause because i didn't use machanical brakes. The rustler is a bit lighter than a maxx but I would assume it is still heavy in comparison to stopping a propellor ( which is all it's designed for ).