Car Spazzed Out?
 

Last night, a weird thing happened to my car. When I turned it on for the main, the car spazzed out and started running at partial throttle immediately. Some fiddling with adjustments got it working if I put the trigger in reverse to go forward. The only thing I did (as far as I can recall) was adjust the trim on a different car (controlled by the same transmitter) the heat before, but it worked fine for that car in the main at the end of the night. After the races, I fiddled with it more and got it to work right, but had to trim the throttle all the way to B16. Does that sound off? What might have caused it?

Edit: It's a Sanwa MX-V if that helps.

connections... loose, or a slightly damaged wire..

You probably changed your original settings instead of selecting a new model for your other car.

Thanks!

You're saying this could be with any of the electronics? I do swap the transponder back and forth between models.

I've been running both cars with the same controller for months, unless you're saying I adjusted the setting for the wrong car? That's possible, just don't know why it would have made a completely different setting way off.

How old is the radio and ESC?

I wonder if the ESC lost its calibration?

I have seen some brands of ESC's that calibrate every time you turn it on, so if you grab the transmitter and pull the trigger while it's calibrating, then that could potentially throw off the center point adjustment. I've seen some ESC's which require the trim to be set perfectly at zero no matter what. I've seen some folks adjust the spring tension too soft and the trigger doesn't properly return to perfect center which threw off the calibration as well.

I once had a friend who owned a Spektrum radio that would inadvertently reset the trim settings on all model memories no matter which memory he had selected. It didn't do this all the time, but he was able to reproduce it. The workaround was to make sure and boot the radio before making any trim setting changes so not to risk "contaminating" the previous model memory that was selected. He was getting brown outs after setting the EPA and then loosing the EPA settings between model memories, talk about a nightmare. At first he thought he had a bad ESC, but the problem persisted after replacing the ESC with a new one, which helped isolate the problem back to the radio losing the trim settings.

Good idea, I'll have to consider that the next time it happens.