Hi Brian, before deciding on power plants need to consider the boat size if the smaller, I think it was 36" 2x550 will be fine, but the 49" is heavy particulaly if using a jelly cell battery, you also need to look at the prop size suggest you give Simon at The Prop shop a call and he will sort for you you will find info on his webb site also.
At 15amps each your motors will get hot so you need the look at cooling coils also you will need a heat shunt or cooling under the speed controller to be safe, for boats around 4.0" I use 2x12v low rpm motors (app. 5000 rpm) and 65mm 3 blade brass racing props.
As the boat has been standing for some years suggest you run some resin sound all the seams in case the origional adhesive is breaking down, regards, Vic. |