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Noise and generators
"Ace-high" wrote in message ... Suggest you buy a sound level meter from Radio Shack for $39 analog or $49 digital and track down the hot noise spots and sound leaks - and plug them. The irritation is either transmitted thru air - sound waves, or solids - vibration. There's no other way. Use very soft mounts. Or double mounts. Good suggestions. 3600 rpm is harder to quiet down than 1800 - but you got what you got. That's counter to what I have heard from manufactures of both types of generators, and from my experience with my own 3600 RPM genset vs a friend's 180 RPM unit. We cruised for 5 years with a 7.5 KW Onan in our engine room under center cockpit similar design to yours. It was noisy but worse - unreliable. Well, that's consistent with ONAN owners around here. I've replaced it with a 6 kw Northern Lights 1800 rpm genset with no sound shield as I like to visually inspect often. Vast difference in noise created. The Onan had a very noisy air intake - check this noise source out carefully on yours - and a 2 cyl clattery engine. Mine is a 1 cyl, but the air intake is a major source of noise. Mine has a baffle that softens the noise greatly. We had and still have 4 big solar panels - it's tough to find a good spot for these - we moved them 3 times before finding a least objectionable home. We are facing the same situation. We had a wind generator - noisy, vibrating and dangerous and high maintenance - sold it - would not have one again. No matter who's. SOunds like you bought an Air Marine. Too bad. When it's squall time at 3 am and the wind kicks up to 35 kts with cold driving rain - who wants to go on deck to turn it out of the wind and secure it. They all sound like a Cessna on the back deck trying to do a short field takeoff. And they **** off you neighbors. I just flick a switch from inside the boat to shut the wind generator down. Better yet, the charge controller senses the high wind situation and shuts it down automatically until the wind calms down to an acceptable level. Swinging the mill by hand is both dangerous and archaic. On Thu, 10 Jun 2004 16:09:40 -0400, "Skip Gundlach" skipgundlach.sez.remove.this.and.the.dots.to.mail wrote: In several of the mailing lists of which I partake, there's been discussion of generators of late, originally about using AC, but migrating to charging, noise, space and cost considerations and other issues. As we prepare to cut the cord for the rest of our lives, we're actively considering an arch to carry solar and wind gear, as we'll be spending the rest of our lives in the Caribbean, where there's ample of both. However, the boat currently (pardon the expression) has a working generator of recent |
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