Quote:
Using the newly installed SenDEC digital tachometer and hour meter and my Radio Shack sound meter, I made several measurements out in the middle of the lake - keeping far away from the drag boats and personal watercraft that were making a lot of noise.
At idle speed (approx. 1150 - 1200 RPM) the sound level was consistently 70 to 72 dBA, at full throttle (3650 RPM) the level was 92 dBA. A jet flyover at 1,000 feet is about 105 dBA. Charts I have show a gas powered lawn mower at 100 feet at 70 dBA and 95 dBA at 3 feet. The measurements I took were with the sound meter about 3 feet from the engine, which I think shows the benefit of having the engine enclosed.
For myself, a pair of disposable ear plugs keeps me comfortable while cruising. We are going to do some more testing using some of the techniques we used to quiet down RV generators - we will report on our progress.
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This body holding me reminds me of my own mortality
Embrace this moment, remember
We are eternal, all this pain is an illusion ~MJKeenan
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03-03-2008, 12:02 PM
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