a stock 26cc, which I own and run, is approximately equal to about 4500w or so. about 165A load on 8s.
Sorry Bande your math is wrong. A stock 26 zenoah is 3.5 hp or 2625W equivalent.
4500W on 8s is 155A - 4500/29 = 155.
I have a stock 26cc Thunderboat and I am giving serious thought to converting it to electric. The big advantages I have with this are that I have a spare painted hatch, motor (TP4070 440kv) esc etc. I can fit the motor in the existing gas mounts and batt trays outside the rails, so it can easily be converted back. This motor on 12s in a 45"mono turning a ABC 2314 /4 chopper prop ran at 90 kph and drew around 60A, I could do two heat races on 6000mah. With a bigger prop on the Thunder boat it would be faster than it is now and easy on batts for heat racing.
One of the guys in our club converted his Slingshot gas rigger to electric. It runs a TP5670 650 kv, ZTW300 G2 esc, 12s (2x6s) 5000 mah, detongued X470 at 130 kph and does heat races without cooking batts.
To the op, the extra weight of electrics in a mono does not effect the top speed, and it can be of advantage in rough or race water. It all depends on what you want to achieve with your boat at the end of the day.
NZMPBA 2013, 2016 Open Electric Champion. NZMPBA 2016 P Offshore Champion.
2016 SUHA Q Sport Hydro Hi Points Champion.
BOPMPBC Open Mono, Open Electric Champion.
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