Ok tried 5s with the above setup. Yes 5s on a 7xl, I figured that I would give the MM a workout. Well it works and worked well until a small piece of steel/metal found its way into the spur and locked the pinion to it. The buggy was probally doing 40 at that moment and it stopped very quickly. The MM let out some smoke and is dead
Took it out of the buggy and had a look at it. Nothing looked obviously burned so I plugged it into the castle link. Programming worked fine so I guess that a fet crapped out, or something else let go in the power supply dept. I had the throttle pegged when it locked up. I talked to Artur and have shipped it back to him to inspect. I will post again when he gets back to me.
This really sucks cause the 5s setup was working very well. No cogging from a standstill, great low speed control, no hestitation either. I only got a minute of running, but nothing was even warm at that point. If he can fix it I will retry with 5s on a 9xl with the same gearing. That should put it at about the same speed as the 7xl/4s combo. I will also set the mesh a little looser and keep away from my shop parking lot as there is all manner of crap there.
I was really impressed at the improvement these mods made on a 4s, high draw setup like mine, I really hope that it can handle the 5s setup as well.