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Old 09-20-2015, 10:37 PM   #21
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Do you remember what brand (and model) it is?
No. Never scrutinized the unit closely.
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Old 09-20-2015, 10:49 PM   #22
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I'm going to be at the marina (three slips from Mark) tomorrow or Tuesday. I'll try to remember to take a look and report back.
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Old 09-20-2015, 10:54 PM   #23
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I'm going to be at the marina (three slips from Mark) tomorrow or Tuesday. I'll try to remember to take a look and report back.
Thanks
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Old 09-21-2015, 12:07 AM   #24
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Real world test results of several popular wind turbines:

Air X Marine long term test

Synopsis of results:

Achievement
Winner in all winds: Silentwind (Spreco)
Winner wind < 20 knots: Air Breeze with blue Spreco Air blades
Winner wind > 20 knots: Silentwind (Spreco)
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Old 09-21-2015, 12:17 AM   #25
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Originally Posted by BobH View Post
That should be rule in any marina, no running wind generators. I believe some can stopped by shorting the output.
They all have what is caused a 'brake' mode, whereby the switch is moved to a position which feeds the power generated back into the unit and acts as a brake. In this mode they are virtually silent, and most marinas insist they are placed in this mode when the vessel is berthed. As pointed out by others, there is seldom need to run them if on shore power charging. They can also have their blades tied down to stop all rotation, a tactic encouraged if to be left untended long periods or if very high winds are predicted.
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Old 09-21-2015, 12:28 AM   #26
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Do you remember what brand (and model) it is?
I think it's an Aerogen...?

Aerogen LVM 412 12Volt 72Watt Wind Turbine [AeroLVM-412] : Solar power : - Energy Matters Australia
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Old 09-21-2015, 12:43 AM   #27
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According to the real world test results I posted above the Aero6Gen was one of the top three for being the noisiest of all the wind turbines they tested (they tested 10 different models).
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Old 09-21-2015, 12:50 AM   #28
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According to the real world test results I posted above the Aero6Gen was one of the top three for being the noisiest of all the wind turbines they tested for noise (they tested 10 different models).
I could be wrong. The photo pic was far away and detail difficult to make out. It did look like the Aerogen thought in terms of more than 3 blades. However, there are others like that. Maybe Aerogen have solved the noise issue like most of the others, as it was and still is the main bugbear really. They all work.
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Old 09-21-2015, 12:54 AM   #29
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Several wind turbine manufacturers, including SilentWind, are using the "Spreco" blades which, from all reports I've read, appear to be one of the quietest blades on the market today.
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Old 09-21-2015, 01:18 AM   #30
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Yes, I believe those blue Spreco blades can be a retrofit to my Airbreeze, but its noise does not bother us at all, so, until they need replacing...
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Old 09-21-2015, 05:37 AM   #31
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The one that makes the most racket is on the very top of his sailboat mast, spinning so fast (24/7) that it's nothing but a blur. There are two other sailboats nearby and their chargers are mounted off the transom and they seem to be quiet, spinning at a fraction of the speed.
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Old 09-21-2015, 06:47 AM   #32
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The one that makes the most racket is on the very top of his sailboat mast, spinning so fast (24/7) that it's nothing but a blur. There are two other sailboats nearby and their chargers are mounted off the transom and they seem to be quiet, spinning at a fraction of the speed.
I suspect those quiet ones are being considerate, and have their wind gens in the brake mode, they do then spin slowly and pretty much silently. That one up the mast which goes at blurring speed is definitely in charge mode. Maybe that owner does not have a shore power charger. Perhaps a polite suggestion..?
They are not exactly expensive, the type and size he would need in a yacht.
Most marinas, here in Aus anyway, forbid wind gens in charge mode actually.
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Old 09-24-2015, 12:54 AM   #33
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Thanks

Spent some time at the marina today. I think I know why our neighbor's generator is quiet...! I don't see any identifying marks on the housing. Maybe someone will recognize the manufacture..Click image for larger version

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Old 09-24-2015, 05:29 AM   #34
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Yes, that one would be extremely silent. Mind you, it would probably not put out much charge either.
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Old 09-24-2015, 10:26 AM   #35
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Last year the boat's wind generator had its blades attached (see my previous photo). Saw it running fast once, and it was making hardly a sound unlike another on a different finger.
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Old 09-24-2015, 08:36 PM   #36
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Yes!
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Old 09-25-2015, 06:51 AM   #37
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Yes, that one would be extremely silent. Mind you, it would probably not put out much charge either.

"Science" claims 3/4 of the universe is missing , dark matter and dark energy,,,

Perhaps its a dark energy charger that works well to keep these boaters in the dark?
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Old 09-25-2015, 08:17 AM   #38
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Fortunately, my periodic berth neighbor (Vagari) which makes seasonal long-range voyages, has a completely silent windmill generator.

..."completely silent windmill generator." Really?? Feel I must ask - recent new batts in your hearing aid? How can a windmill gen's blades be "completely" silent in the wind?

If that is the actual circumstance - I want one!
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