Hi Malc,
Thanks for looking at the Solent Club website. I used a Mobile Marine Models T12 Motor and a two and a half inch four bladed prop. I do not know the motor you have, perhaps somebody else could advise on that. I tried a three inch prop but this produced an unrealistic performance and was difficult to manouvre at slow speeds, or even get a slow speed from it. The motor was fitted to the MMM mounting plate and then to an existing board on the bottom of the boat. I ended up with an extra short shaft and two couplings in order to fit the motor on the existing plate and get access through the aft hatch under the winch house. This was all necessary as I was working with a part completed model, a constraint you will not have. I would however suggest you position the motor below the aft winchouse in order to get easy access once the model is made.
My model weighs in at 11.5 Kg. I also fitted a Technobots sound system, actually designed by a Solent club member. I put a 4 inch speaker right at the front of the hull.
I'm sure that we should be able to set up an email link somehow through this website without revealing details to the world. Again perhaps a kind member could advise me which bit I haven't filled in to make this possible. I know it's easy - I just haven't been told how to do it!
John