Talking me into an RC boat

[dhutch]

FMOB said:

dhutch said:

tr7v8 said:

Sounds like either you're pulling too much current & the ESC is going into current limit mode OR and following from that, it's going over temp & switching off as part of saving itself.

Yeah, it sort of feels like that. But it's a MTroniks Viper 20 and I'm measuring 7A current draw max on a 10s 12v NiMH pack. 6A at 6.9v. The ESC is cold to the touch even after half an hour, and the fault occurs from the off.

I get same fault using an MTroniks Eco27 car ESU too.

I have also tried reducing the end points on the Tx to 75% and recalibrating and no change.

How many turns does the motor have as the speed controllers have limits, lower turns = more current.

The motor is a 'marine' spec one, as per this link: https://howesmodels.co.uk/product/johnson-540-3-po...

Is appears everything boat is in amps and everything car is in turns, but I have yet to find a good conversion algorithm!


Some more details on the boat here
https://www.modelboatmayhem.co.uk/forum/index.php/...