Thanks Chris the information that you gave was extremely helpful and exactly what I wanted
Regards
Little Charlie (Bob)

Little Charlie - I wouldn't bother going down the IC route again, there aren't many places where you are allowed to use them now.

I bought one of the big Huntsman 31 (though all timber) a little while ago and it is fitted with a brushed Torpedo 850 motor which with a 7.2v lead acid battery (very heavy) has mediocre performance.

I plan on changing to a LiPo battery and a brushless motor and would be looking at something like an Overlander Thumper 5045/10 720 kV. This has plenty of torque to get a heavy boat moving and as you can use 3 to 8s batteries it should give you all the performance that you want.

Chris

sorry no I have not, 40 years ago I had a 48 inch Huntsman with a 25cc Fox petrol engine to power it have returned to the hobby after my wife passed away and have not a clue about brushless motors that is why I am asking for a recomendation for a brushless motor unless of course somebody can tell me where I can procure a 25cc Fox engine (the importers used to be in Brighton)

Regards
Little Charlie

I assume you have been following blog -"Fairey Huntsman 31"