From the kickstarter: "The core of the motor is sealed and protected with an epoxy coating and it uses high-performance plastic bearings in place of steel bearings that rust in saltwater."
still somewhat skeptical that an epoxy seal will last next to turbulent water with sea debris. I know other strategies are magnetic couplings. Still, maybe replacing cheap motors frequently will be cheaper than a long lasting one (if one exists??). Make sure your mounting plates are accessible!
By way of reference, there is nothing comparable within 10x the cost of this thruster. If you're worried about longevity then perhaps $1,000/thruster is more reasonable.
Oh wow, I did not see the price, yeah that's crazy good.
i assume it'd be something better than just a standard epoxy. there's plenty of underwater-specific epoxies and coatings used in the oil&gas industry that'd hold up just fine.