Steves issue is (possibly) too much current draw rather than a blistering top speed. His speed as seen on the pond wasgood..a good scale speed for his…5 foot? Fairmile D. Fast enought to look , er, fast but not ridiculous.

You could try some Graupner ECO 600`s, they are not so juicy, or failing this some 555`s…and these might turn slightly larger props than those fitted to restore a bit of speed lost by fitting less powerful motors..

Smaller props might actually do the trick…and dare I suggest it, but plastic two-blade props work fine with high speed motors..for running on the pond, and are cheap. A bunch of S and X pitch 35 and 40mm sizes will not cost much and give some scope for experimentation. Keep the brass ones for show??

Weed on the pond sunday and probably just as well you did not sail as rescueing a boat your size and with all the sticky-out bits on it would have been tricky!

Ashley

Ashley

Steve. I have a feeling that you need an ammeter to see what the various combinations of motor are drawing. Unfortunately with such a large boat and 4 shafts you are going to have to try a lot of options.

What voltage are you using?

Ashley