Originally Posted by TeamTekin
Need to try and see what the lights are doing during the shutdown, and listen. I realize this can be difficult, but if we know what the lights are doing we know what is going on in most cases. If the esc is rebooting completely which does take a few seconds you should hear the chimes. If the receiver is browing out
Do you have steering during the shutdown?
Nothing, completely dead.
It has been really strange how the failures have occurred.
First time I had the issue I was running the "bad" setup with the 2 cell lipo directly into the receiver. It behaved a lot like a sensored only setup would with a bad sensor wire. I put the car down on the track, walked to the drivers stand, and then the motor was dead but I still had servo. I walked to the car and bumped it and it seemed to work. Back at the drivers stand, no go. At this point I assumed that since it seemed to be related to distance from the car that it was a receiver problem. I use the spektrum receiver that is known for antenna problems. SO i put a new antenna on, still the problem came back a week later. So then I put a new receiver in. IT was fine for another week. In the meantime, I found this thread. I converted to the pack inline with the receiver switch. Came to the track and ran 2 rounds no problem. Then, had the car go dead at the end of the straight sending it into the boards at full speed.
I did a discharge test on the rec pack, checked all connections, wiggled things while powered, checked the antenna, did a rebind. Everything seemed rock solid. Even did some practice laps. Now next round I set the car on the track and when I got to the drivers stand - NO GO . Nothing. No steering. I walked near the car and it started working again.
Walked to the drivers stand. Nothing.
Now, I realize it sounds a lot like a receiver problem at this point. The fact that two different receivers have done it and the fact that the behavior of the problem changed when I went to the speed control doing the regulation of the rec pack, I'm still slightly suspect about the speed control.
Because now the steering goes out too.
I changed the car to NO lipo cutoff and strangely enough got through the main without issue. And ran another pack in practice afterwards.
Still could be connectors and maybe rec. pack too. I really haven't ruled anything out at this point.
I plan on sitting down with the car tonight and going over everything with a magnifying glass. Thing is, it has never given me problems on the bench - Other than the one time it was having trouble rebinding.
I wish I had a tiny graphing voltmeter I could put on the power rail of the receiver. Even though it sometimes acts like a radio "range" problem my gut is that its a power issue.
Thanks for bearing with all the fine details. Up to now both my Tekin and Spektrum gear have been absolutely bulletproof and fast as hell.
I can't wait to get to the bottom of it and get back to winning.
If I can get it to act up at home I'll let you know what the lights are doing. The one time at the track a marshall was standing by it when it came back to life - it appeared to be "rebooting" and reloading software. Don't know if that is accurate. Just what the Tekin user that saw it thought.
So far it only seems to fully act up on the track. Guess I need a chassis dyno to troubleshoot this one.