I just converted a Traxxas nitro sport to brushless.

It's running a Leopard 60A ESC V2 and a Leopard 12.0R 3300KV motor...with a 2S battery.

Originally it ran fine. Wheelied and was all around rip. The other day it started what I thought was glitching as there were a number of vehicles out.

So I turned it off since the battery was dying anyway. But the glitching continues. But weirdly. It'll run fine for a few min, then it'll jerk when hitting the throttle...like very severe cogging but it doesn't go anywhere at all. Then all of a sudden it'll work fine.

Then sometimes when it decides to quit it won't even cogg or twitch (whatever you call it. Steering still works fine in all situations.

I noticed that it seems to correlate to hitting a jump..landing. Not always but a lot of the time.

I changed the batteries in both the rx and tx and nothing...even re-paired the ESC and RX. The RX is just a RTR run of the mill 2.4Ghz system...given me no issues in any other vehicles.

Any ideas?

Anytime you bind the TX & RX, It changes the calibration of the ESC. Make sure lipos are charged up, all trims set at 12o'clock. Then recalibrate your RX to ESC. Follow the manual on calibration. Some ESC retains memory of calibration some don't.

When you say to recalibrate the esc. You mean setting the full, brake, and neutral throttle positions right?

If you're still using the old 27mgrtz controller & rx, ditch it. The one with the long antenna you pull out. A cheap 2.4 is better that one of those. I had a T-Maxx runaway with one of those. Cost $90 to repair the damage lesson learned. I just traded a Ofna nitro to my son this weekend, it had the Ofna am setup. It would glitch so badly, just touching the glow ignitor against the engine it would freak. He put his newer 2.4 Spektrum on it, glitchs gone.

Replace the old obsolete TX and RX and recalibrate.

It's a RTR pulled tx/rx and is 2.4Ghz.

Cool just checking. I have heard of this happening with a 2.4 system, rare, but it does happen. Try running it in a differant location. There may be something in that area affecting it, cell tower, police radio repeater, etc. Secondly, worst case is try another brand of TX and RX. There's so much electronic noise nowadays, I'm surprised any of our stuff works lol. I have a mini Losi that I have replaced esc, 4 receivers, 3 controllers, and it still has a short range, @50ft. Luckily it just rolls to a stop when it loses range. Nitros aren't as forgiving. I still say try another 2.4 system.

I'll try another as a last resort as I have 3 others that are the same and have no issues.

I also am running them outside of the city - I live at least 5 miles from civilization so I can't get much more remote from other signals.

Thanks for the insight.

I'm going to re-bind the tx/rx tonight and then recalibrate the esc to see if that fixes it.

Np, let us know what it ends up being for others having issues. Is you'res a TQi? Or TQ2.4? They also had a TQ2.4 high output for extended range.

No its one from a Team Durango rtr.

Ah. I don't know much about them. Just be extra careful since this is a nitro. When nitros lose control, they "stick" to the last command of the controller. If it's full throttle, it's gone. I usually walk it out. Take the truck to the far reaches of where I'll be running it away from me, to check range.

It's not a nitro...

Lol good, I missed the conversion lol. Still working on coffee. Good. Just let us know what the problem ends up being.

Binding your TX & RX is different from Calibrating your ESC. Calibration of your positions of your trigger. The old AM & FM you don't rebind, But you may have to recalibrate. Reiterate some ESC retain the memory of calibration some don't.

People are saying to change to 2.4mhz radio. That's the time now. Its up to you.

Do you have an aluminum chassis? If so, try to get both the RX and the tip of the antenna away from the aluminum. They can add noise to the signal.

I would also recalibrate as stated above.