Well i`ve got the wind generator up and running. The Rutland 913 will put a charge into the batteries with a modest wind speed of 5 knots, just under 6mph. With a wind of say 28mph it should put in about 9 amps.
So far since trying it out the winds have not been great blustery but not continuse but still the batteries have gained at the end of the day even after using power all day. Don`t forget on a boat all your power comes from the batteries and the worst power consumer is the 12volt fridge/freezer, then you pump your shower water then pump the waste water overboard. Your cuppa needs pumped water to fill the kettle. The loo uses electric to flush, the radio/stereo all these things are taken for granted on land but on board you have to be aware of a limited supply. Anyway with the wind so far the generator has ended up putting back what i have used during the daytime plus a small amount on top. All this adds upto less running of the engine to charge the batteries. Fine if the wind`s blowing i hear you say, true so my next thing is to do some research on solar panels. The control box i have fitted to the wind genny also allows connection of a 100watt solar panel so no wind means the slar panel will help things along and if i get wind as well so much the better.
In the picture above you can see the mast is held firmly by metal guy lines that go down to the roof and in the picture below you can see the mast is held in place by a heavy duty metal bracket that allows the whole thing to be folded down onto the roof after two of the guy lines have been released at roof level, all done in less than 5 mins.