Thanks Sonnich - It looks as if it will be easier than I thought to get to the battery and the mains switch. I've looked carefully at your earlier photos and I can't see the rod for the switch - I wonder if you fitted yours or perhaps switch off when you take the battery out I suppose if you are having two or three sails in one visit it's easier to have an outer switch just to disconnect while someone else is using the frequency - anyway I'm sure all will be revealed eventually. Sorry to hear about your propshaft - I use Vaseline, I've been told by some of the fast racers that it does slow them down a bit but is generally very reliable - I used to get a few drops of water into my surface boat after a sailing session, but since I used Vaseline I have no problems (yet) I suppose the secret is to re-grease occasionally, but it easily forgotton when things are going OK. That's one thing about Robbe models - spares seem to be easy to get.

Thanks again Mate,

Ian