The things I have found seem to be a bit vague on the question of brushed motors being waterproof-- so I ask MMC this: Are they waterproof? Not just able to be submerged under water, but can brushed motors run under water without damaging themselves and working well? Specifically 6-8mm motors. Thanks in advance!
Fresh water they should be fine at least for a while, it’s fairly low voltage and fresh water doesn’t conduct very well. You’ll lose some efficiency, but that’s probably all.
Brackish and salt water conducts electricity quite well and will quickly kill things.
Thanks! That answered my question perfectly.
You can always try corrosive X. Here’s a video link of it working.