Is this normal? Can I add some product to clean the brushes, or is it just like this with these?
I limited the throttle for the video. On 100% throttle rate, there's much more sparks visible inside
Took out my machine for the first time since last summer.
Charged Smart NiMH battery 60% till full, ran boat for 3 minutes, then power was reduced.
Limped it back to shore, throttled on low for 20 seconds, then engine stopped turning completely, even if they spin perfectly fine by hand.
Opened it, and some electrical smelling smoke inside.
Although the battery was barely skin temperature.
Wires all look perfectly fine.
Any ideas for a fix?