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- From: rrusk@ssd.csd.harris.com (Bob Rusk)
- Newsgroups: rec.boats
- Subject: Re: Engine Intake Silencers
- Message-ID: <RRUSK.92Nov19092608@rcx1.ssd.csd.harris.com>
- Date: 19 Nov 92 14:26:08 GMT
- References: <lgkv9bINNa3c@cronkite>
- Sender: news@grouper.mkt.csd.harris.com (Network News)
- Reply-To: rrusk@ssd.csd.harris.com
- Organization: Harris Computer Systems Division
- Lines: 36
- In-Reply-To: billc@sextant.Eng.Sun.COM's message of 18 Nov 92 17:28:11 GMT
-
- On 18 Nov 92 17:28:11 GMT, billc@sextant.Eng.Sun.COM (Bill Courington) wrote:
-
- >Attention powerboaters (and sailors with inboards)...
-
- >My recently installed Perkins M20 is a wonderfully
- >smooth engine, but speaks rather loudly in a deep
- >baritone. And it's installed in a boat (an Olson30)
- >whose acoustics are similar to those of an oil drum.
- >So, even though the engine box is insulated everywhere
- >but under the engine, a good deal of noise permeates
- >the cockpit when underway. I noticed the other day
- >that as I moved my hand toward the air intake, the
- >baritone noise diminished. The intake has no air
- >cleaner or silencer, just a grate in a roughly 1.5"
- >square tube. What's involved in fabricating a silencer
- >and what are the chances that it will do some substantial
- >good?
-
- I would be very tempted to experiment with attaching a well-reinforced
- flexible tube to the air intake, so that the air is drawn from another
- area in the engine box. It's often amazing what a plain tube will do
- to reduce the noise level. The tube itself frequently produces a
- mellowing of the intake noise.
-
- BTW, don't put the intake very much lower in the boat than its current
- location. You don't want your diesel to suck water if you get a
- bilgefull.
-
- >Thanks,
- >BILL COURINGTON
-
- --
- --
- Bob Rusk
- rrusk@ssd.csd.harris.com
- My thoughts, probably not Harris'.
-