A 36” tunnel will not run well at all on 4S, neither an OPC nor an offshore hull. Amp draw will be very high and prop size too small for efficiency. (The little 4S motors do work well on hulls in the 27-30” range.) Far better to run at least 6S and a motor with dimensions between 40x82 and 40x92 mm, with the right Kv this will spin props in the 50-55 mm range and give decent performance. I run 36” inboard cats and am well aware of what works.

Sorry, I am not aware of a good leg for this size motor, but then I don’t look for them either.


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