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From: (no name) (no email)
Date: Mon Dec 13 2004 - 05:05:45 EST
Hi, Bob,
I agree. Having had the dubious distinction of keeping the "horn section"
going on many commercial boats, I'll offer the following advice: Don't use
copper
tubing or galvanized pipe. Use 3/8" hose rated for the pressure and be
scrupulous about cleaning it before installation. Keep the pipe sealant back
at
least 2 threads (I hate Teflon tape) on the fittings and install a fine mesh
strainer just before the horns. Be sure all the runs have no low spots, and
buy a
good compressor with a decent-sized tank. Be sure the tank has a drain valve,
mount it so that the end it's on is "low," and blow the condensate out once a
month. If you buy a quality air horn (I like Kahlenberg, too) you can mount
them properly, and not as if you were them blowing at the foredeck! Ask the
mfr.
about tank sizing.
BTW, I agree on the frequency bands -- small boats should not pretend to be
ships, hence the regulations, but I think you can have a "punishing" SPL while
keeping within the proper frequency band.
John
"Seahorse"
Bob Austin writes:
A quality air horn will have a resevoir tank and the air is always at 125 PSI
or what ever the regulator is set at. The air horns which are in effective
and need short tubing are ones powered only by a small air compressor and no
tank.
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