I did indeed mistake the Nautilus motor for the DeWalt drill one.It kind of looks similar and you used the same RV sewer pipe as.....yeah him.
The same results with bec and the separate receiver pack,to me,seems to prove that putting a huge value electrolytic cap is not appropriate for the receiver.It can kill glitches in carpet racing buggies where a steering servo demands high current surges.It doesn't suppress motor generated r.f.
I can send a bunch of suppression components that I keep at arms reach.Those include ferrite beads with a 5mm hole and the right grade of ferrite material that takes fifty amp turns to reach saturation.That just means they work by threading it on the cable.No winding required.Without going to any trouble you can take the suppression of motors a lot further than that..I'll supply you with a goody bag for 10 subs or part list if you want.
You are saying that cycling the supply clears the fail safe?
The short answer is "check the battery is not a duffer !".
The long answer is it is maybe caused by a brown-out or momentary transient that triggers a low voltage failsafe?
That could be tested by a separate supply for TAE.
Is that not the Engel installation? I don't know.
Perhaps try a brand new, or higher capacity 7.2 or an 8.4 pack or 2s Lipo and perhaps cured by no more than a new battery.
Best of Luck!
Is it Frank's old boat here on youtube? Part 1
If so,the more I am thinking that the residual problem with the TAE might just be it activating a battery failsafe,just like you expect in brushless powered aircraft with long cables.Switches in the power lines are avoided there.
Stick a 2200μF capacitor onto the TAE supply right at its power terminals to see if that sorts it.
Does the TAE not flag up a low voltage fail safe or am I the only one that goes in for that?