To genset or not to genset, that was the question.......
I studied this issue for close to two years before making a decision. I looked at specifications. Talked to dealers. Talked to owners of gensets and would be owners. Talked to Marianne (my wife) a lot - this decision had the potential to creat a lot of trouble for me....
Tom - owner of a beautiful Malo 42, installed a genset and he helped with insight and advice. Anyway I looked at this though, it was going to cost about $10,000-12,000, and take up a large amount of my port lazerrette space. That's a lot of money - about what I needed to spend to finish outfitting the boat. But more important was the space. Also, the permanency of the installation. Two new holes in the boat (big ones) for water and exhaust. New fuel lines. Holes in the cockpit for instruments! Foul smoke in anchorages, and another way to annoy your cruising neighbors. Powerboat people have gensets, and they are evil.....
If you make this decision, there is no going back.
Also, what about the oil changing every 100 hours. Do you want an AC or a DC genset. Then - there is keeping the damn thing going. I knew AC was out - the regulators are far to complicated. I followed a number of cruisers for a couple of years who had AC genset - they all had problems in far away places.... So it would be DC - wait - what about the sound blanket- can't have all that pesky noise aboard - opps - that's $1,500 - but wait - won't that sound blanket make any high output DC alternator overheat. Right, you need some sort of cooling system, with fans, and hose, and an air intake.
I really wanted a genset though. All that power at the push of a button. Its hidden below, out of the way. I could make hot water with it. Besides, its not that hard to maintain - those single cylinder Kubotas are foolproof!!
Well, I knew we needed something. Don't want to run a 56 horsepower engine every other day to charge my batteries. The biggest mistake people make is to underestimate their power draw while at anchor. Up here in the northwest, with such iffy winds, we motor a lot and that keeps the batteries charged. Also, we had never had the time to hang out someplace for more than a few days. When cruising, ideally we would be someplace for weeks - and we wanted to be at anchor. We don't like marinas (except when we are out of gin). So, we needed about 100 watts of solar power, and a wind generator, or a genset.
So- we choose a wind generator. Its cheap (relatively). It's reliable. If I don't want it anymore I can take it off the boat and sell it, or throw it away. But which wind generator?
That parts easy - spend a year walking, or paddling up to, every wind generator you can find and listen to them. Which ones won't drive you crazy with the noise it makes?
We choose the KISS because it is quiet. Many other cruisers have chosen the KISS, because it makes a lot of power, and is relatively quiet.
Here is a longish view of the generator on the boat. We mounted it on a 9.5' pole manufactured for us by Island Marine Products in Florida - http://www.islandmarineproducts.com/wind_generator.htm
These guys - Arnie Swanson - were great. They were also very affordable compared to the costs here in the northwest. They build a pole with a custom strut for $650. It is a great pole - polished steel with 1" struts - no cheesy aluminum pole for this boat!
A view of the three part strut. The struts form a triangular base for the generator. I must confess that I designed the smaller strut you see. This attaches to the top rail on the stern. The rails on a Malo are really impressive - heavy 11/4" highly poliched steel - and I wanted to take advantage of that strength. This is a really solid installation that cuts down on the vibration from the generator. We have had it going in 20 knots - the generator makes a good loud whoosh, - the the vibration is hardly noticeable in the cockpit and not at all below.
The generator will start to put out about 4 amps at 10 knots. This goes up progressively higher as the knots increase. We don't have a good sense about this now - but we seem to be getting about 10 amps at 15 knots. The output runs into a Trace 40 charge controller. This charge controller bleeds off excess current into a resistor bank. This bank is mounted near the stern of the boat where the shaft leave the hull. (There was a lot of space back there.) We needed the controller to prevent an excessive charge from getting to our gel batteries. It's a mult stage charge controller, so it has a bulk, absorption, and float voltage range, and temperature compensation - fancy talk for a thermometer on the battery bank that senses if it is getting too hot.
Typically, the charge controller will rarely be used, since your batteries are hardly ever fully charged when cruising, and tend to float in the 50-80 percent full range.
We got the KISS from Hotwire - http://www.svhotwire.com/index.html - John and his wife Libby are great - they actually carried my generator across the county from Florida to the Oakland boat show and mailed it to me from there. A part had been delayed in arriving. Now - that is customer service!
We call the wind generator our "spinny". The specifications provided on the Hotwire web site are correct, and John and Libby provided a lot of help during the installation.
The package came with good instructions, and was not hard to install (relatively). All of the struts need to be thru-bolted. There is a lot of heavy 8 gauge cable (for the resistor bank) and ten gauge wiring for the current. I had to tap holes in the toerail, since the rails are backed by steel, and thread the mounting bolts through. The nice thing about the installation is that the spinny output can run in parallel with the output from the alternator. In other words, I did not have to string 4 gauge wiring from one end of the boat to the other, but was able to tap into a common terminal with the alternator output. The charge controller does not divert current below 14.85 volts, so that the alternator output is never diverted (it is on its own controller). The spinny volt output is above that, so it's properly diverted, as necessary, when the controller reads the battery voltage.
We love our spinny. The sound it makes is free power, creating ice cubes for my martini. Once this summer, we were motoring and going to windward in about 20 knots, and boy, with the alternator and wind generator running we made some amps in a very quick time!
I still want a genset though.....think... all that power... (I just can't help myself).