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Go Back   SailNet Community > On Board > Gear & Maintenance
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  #1  
Old 04-03-2011
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Water Lock

When Raven was built the water trap installed was a one off alumnium job. The thing is now twenty years old and has reached the end of the road.

To replace it I unthinkingly went for one of these..



All very well and good except that the damn thing does not fit in the available space due to the angle of the outlet pipe. I've tried heating it up and bending the outlet closer to horizontal but it was not successful. While doing so I realised of course that this thing does not have all the internal baffling of the old and so is going to result in a noisier exhaust, something I cannot tolerate.

Bit of Googling and a thread from our old friend Alchemy over at AS came up with the Vetus corporation who not only produce something similar to the above but also this, which has baffling for noise reduction and will fit into the available space. Negative is that they are ruinously expensive ...



Anyone have any further thoughts or ideas ?
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Old 04-03-2011
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If the 'beauty' is ruinously expensive then perhaps having another 'one-off' fabricated would be less? Any good metal shop should be able to reproduce what you had, maybe in SS this time?

It would a a guaranteed fit too, no?
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Old 04-03-2011
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Or these. Being fiberglass they will never rust and don't have the issues a plastic one has - melting if you overheat.
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Old 04-03-2011
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Quote:
Originally Posted by Faster View Post
If the 'beauty' is ruinously expensive then perhaps having another 'one-off' fabricated would be less? Any good metal shop should be able to reproduce what you had, maybe in SS this time?

It would a a guaranteed fit too, no?
True my friend but time is my concern with the one off. I have one guy looking at it but he reckons minimum two weeks. That of course means two weeks without engine cos we had already removed the old and it pretty much disintegrated as we did so. We need to haul the old girl before Easter. She is celebrating her 20th birthday so insurance company requires survey before reinsurance.

Price of new 'one off' is going to be around $300.00 I guess, which would, I admit be less than the Vetus. Vetus is going to be at a guess $500.00 and up. OK so that is not exactly ruinous but it an awful lot of money for something that is not particularly pretty, does not help us sail and is hidden away in the engine bay.
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Old 04-03-2011
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oh, and I should add that the original one off was obviously installed already attached to the exhaust manifold cos we had to dismantle half the bloody engine in order to get it out.
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Old 04-03-2011
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I read an article somewhere about someone that built one themselves out of fiberglass... It did not look difficult; make a box out of fiberglass, put two tubes into it, and could be finished in one or two days. You could add as many (or few) baffles as you like. I'll post a link if I find it online...
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Like a home made version of the Vernalift I linked to pictured below.
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Old 04-03-2011
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GOT it!

But I can't post the link.

Look for back issues of Good Old Boat

Quote:
EXHAUST INGENUITY
BY PAUL RING
Exhaust ingenuity: Paul Ring's friend, Ken Simmons, had a problem with his Pearson Vanguard: How to fit a properly sized and correctly positioned waterlift muffler in the engine area when replacing the Atomic 4 with a Yanmar. Paul's elegant custom-built solution was to build the muffler from epoxy and have it (built as a V-shaped unit) surround the prop shaft. Paul explains how he designed, built, and tested this muffler.

Article Number: 3367
Issue: 54 - May/June 2007
Page No: 33-36
Read Online: a 1965 Cheoy Lee Offshore 27 sloop
If you need it, PM me and I'll scan and send it to you.

Brian - I can't see your pic...

[EDIT] Now I see your pic...

Last edited by eherlihy; 04-03-2011 at 08:27 PM.
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