You will need to waterproof your electronics, ESC, receiver, and servo:
- ESC & receiver, may use PlastiDip or just put inside a balloon if no overheat problem
- servo, some waterproof servo like Traxxas, Hitec or just use a cheap servo
- No need to waterproof motors (except sensor circuit on sensored brushless motors)
However, stay away from salt water which will corrode all bearings, and may this cause motor/ESC failure due to drive-train stuck.
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