laganm21

I have a Airtronics 75MHz Mx-3S 3-Channel controler and reciver on my big block tmaxx every thng worked great till yesterday. Never been in water or mud with the motor off every thing is fine severos work and sterring is great as soon as i fire up the motor the thing gose crazy and then when i kill the motor is back to normal i even put a new reciver on from JR and still the same problem Please help

PrjctStrtFrce

My Feedback: (10)

Check for loose screws throughout the car. That alone can provide enough static to make the servos twitch. Do you have any carbon fiber on the truck? Because that will cause twitching as well. How's your crystal in the receiver and the remote?

laganm21

i have a roll cage do you think that would matter

PrjctStrtFrce

My Feedback: (10)

How long have you had the truck? Did it do it prior to installing the roll-cage? Is it a CF roll-cage? Check for metal-metal screw connections.

t-maxxmaniac

loose wires? and is there any bare wire on the motor? sometimes when i put the glow heater on mine the servo twitches

k20_94_dc

My Feedback: (2)

I have had the roll cage for as long as i had the truck never had a problem and the motor has no wires anywhere near it can the viberation for the motor cause the reciver to glich

rcnitrohead

If your antenna is touching anything metal, like leaning on your roll cage, then it will cause interference. Thats the most likely cause, after that its vibrational interference, and if its not that... Then its a problem with the reciever/crystals/servo plugs.

Tom.

Mspeed

I had a similar issue one time having servo glitching when running only. Was on a older buggy with alot of metal all over it. Had a alum. cage and all too. I ended up wraping the reciever in foam to keep it incalated from some of the vibration, it helped a ton. I dont advise doing this next step, but i cut my antina down some too and it was totally fixed. I presume you have a nice reciever so cutting the antina is out of the question, and since you already tried a new reciever it might not be that?
I have seen servos themseleve glitch from vibration, that had nothing to do with the reciever. I had to replace a servo that would glitch only when running one time. Try replacing the servo, I know it sounds strange but it worked for me in the past.