The CC/Neu 1515/2200kv motor is a decent choice. A bunch are using that motor with great success. You dont need a motor that big but if you got it already then why not. It will bolt right up to the stock motor mount. The stock UL-1 cooling can will not work on that motor. You would need to buy one from OSE or similar if you wanted a cooling jacket. But you dont really need one. Even using a big prop, like a 445 or even a 545 it wont over heat that motor for the size batteries you can stuff in the hull. So dont feel like you have to water cool it.
I run a Leopard 4074/2150 motor (close equivalent to the better CC/Neu 1515) on 4S with no heat issues. I only cool the esc just to not waste available cooling for my T180 esc.
What I would recommend is to add a tapered block glued down under the motor to the floor pan and wire tie or something similar. The thin stock motor mount does flex using the, longer, heavier, more powerfull motor and if you add a lower wedge block with a wire tie on the end of the motor the flex is greatly reduced. Dont know if that makes sense but it keeps the flex shaft from being pulled and pushed about while the stock mount bends.
John
Change is the one Constant
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