Iv made 3 of these so far. The first one air cooled, but it ran hot with the hood on. The second two I used heat sinks and ran through an air heat exchange (small PC radiatior) an drilled vent holes in the cowling. No need to pump saltwater up into your electrical area.... plus there is way more parasitic drag on these little motors factory water pump. When I first tried without removing the rubber impeller was costing me almost 500w of power just by itself.
The motor kit on Amazon comes with a 6kw brushless motor, 48-72v controller, and throttle.... all for $400 maybe a tad more now, with terriffs. The mount took an afternoon in the workshop... sorced a few used electric motorcycle(surron) batteries $400 each on fb marketplace with a charger. I used a mercury 6hp base($100 blown up on market place) and put the largest prop I could find to fit it. All in all I'm I'm probably $2000 but I cooked one battery before I learned the limits...........and a $400 Amazon motor kitplus at least another $6-800 for the controller then probably another $2k for someone to make the motor to outboard adapter mounting plate and coupler.The cheapest complete electric powerhead kit I have seen is from Australia and its $5k Australian$.I paid $750+$450 US$ shipping for a brand new entire 5kW outboard from Thailand. I think its based on a Yamaha or Tahatsu 4hp, cause the prop is pretty small, but it does have a water pump.I haven't put it on anything yet but I have hooked it up and it seems to work.![]()
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