Originally Posted by
Txmustangflyer
Ok guys.
My Hanger 9 is pretty much headed towards my dream rc mustang.
Towards that end I'm trying to get all the bells and whistles. Everything on the transmitter.
Before now, I've always ran a manual choke, but this time around, it's one of those bells and whistles, the reciever has a channel for it, I want the choke on a switch.
This has led me to a headscratcher. What servo. I've read that a normal servo tends to burn up trying to pull duty as a choke servo. Not what I want to happen. Should I assume that a retract servo would be a better option as, at one end of its throw, it pulls zero power, ie "switched off?"
If set up correctly the servo can last a long time. My TF Corsair has had its choke servo for about 10 years! Make sure there is zero bind and free push pull operation, no buzzing. A standard servo is all you need or even a high torque mini servo can do it. I use two standard HiTech RCD servos and I remove the return spring on the Walbro carb to reduce the force on the TH servo.