[Public-List] Dripless stuffing box (was: Standpipe exhaust)

[George Dinwiddie]

John, I'm not a fan of the mechanical dripless stuffing boxes.  And I 
think any modification to add a valve would only let the manufacturer 
off the hook in case of a failure.  Besides, can't you just pull on the 
accordian fold to drain the bearing?

  - George

mahseer at kos.net wrote:
> When I opened up my exhaust, except the section that is above the water
> line that had some soot the bronze pipe was as good as the day it was
> made.  No corosion or pitting, I am in fresh water not salt. the weak link
> seems to be the braise between the copper pipe and the bronze lower
> washer.
>   This winter I have to remove the engine to replace the cockpit drain
> gate valves, while doing this I might replace the stuffing box with a
> dripless one.  Since they need a flow of water to cool them I am
> thinking about useing the exhaust drain valve to do this this way there
> is no standing water in the pipe when the boat is not used.  Any thoughs
> on the dripless bearing and the cooling idea.
> 
> John Boor
> MAHSEER #380
> 
>> If the joint leaks, it'll dump into the bilge, not the cylinder.  The
>> center pipe is continuous.  Also, the old ones had a drain valve to
>> drain the water out for the winter.
>>
>>   - George
>>
>> Peter Amos wrote:
>>> I had one of these on my previous boat.It was an incredibly heavy
>>> weight on the exhaust manifold,it leaked from a weld,out of sight
>>> ,and corroded an engine mount.I saw a diagram in one of Calders
>>> maintenance books and it looked to me that it always had water in
>>> it.If an interior weld leaks I think it would dump water into the
>>> cylinders
>>>
>>> Pete #166
>>>
>>>> Date: Tue, 15 Dec 2009 09:50:00 -0800
>>>> From: gwyn at beluga.phys.uvic.ca
>>>> To: public-list at lists.alberg30.org
>>>> Subject: [Public-List] Standpipe exhaust
>>>>
>>>>
>>>> Hi,
>>>>
>>>> I just had mine refurbished. It was leaking and something inside
>>>> was rattling. I didn't actually see the pipe disassembled, but
>>>> the guy made some drawings which I've reproduced and put
>>>> on the web at:
>>>> http://astrowww.phys.uvic.ca/~gwyn/pers/sailing/standpipe.gif
>>>> The drawing is a bit crude, and not to scale, but it gives
>>>> you the idea.
>>>>
>>>> The rattle was caused by the deflector cap coming loose,
>>>> which is what is described in the last paragraph of:
>>>> http://www.alberg30.org/maintenance/MechanicalPropulsion/Exhaust/standpipe.html
>>>> It was resoldered in place. It wasn't possible to get the top
>>>> cap off by melting the original solder, so it was cut off and
>>>> then resoldered with silver solder.
>>>>
>>>> The guy who did this (Townside Auto in Victoria BC) said the
>>>> pipe was copper, not bronze. He figured that to make a new one
>>>> would require 200$ worth of copper parts plus 3 hours shop time.
>>>>
>>>> Stephen Gwyn
>>>> #495 Quasar
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> ------------------------------------------------------------------
>>>> Stephen Gwyn | Tel: 1-250-363-3136
>>>> Dept. of Physics & Astronomy | Fax: 1-250-363-0045
>>>> Univ. of Victoria | Cell: 1-250-885-6969
>>>> PO Box 3055 | E-mail: gwyn at uvastro.phys.uvic.ca
>>>> Victoria, BC V8W 3P6 | http://orca.phys.uvic.ca/~gwyn
>>>> ------------------------------------------------------------------
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>> --
>>   ----------------------------------------------------------------------
>>    When I remember bygone days                         George Dinwiddie
>>    I think how evening follows morn;            gdinwiddie at alberg30.org
>>    So many I loved were not yet dead,           http://www.Alberg30.org
>>    So many I love were not yet born.                          also see:
>>                 'The Middle' by Ogden Nash     http://idiacomputing.com
>>   ----------------------------------------------------------------------
>>
>>
>>
>> _______________________________________________
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> 
> _______________________________________________
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-- 
  ----------------------------------------------------------------------
   When I remember bygone days                         George Dinwiddie
   I think how evening follows morn;            gdinwiddie at alberg30.org
   So many I loved were not yet dead,           http://www.Alberg30.org
   So many I love were not yet born.                          also see:
                'The Middle' by Ogden Nash     http://idiacomputing.com
  ----------------------------------------------------------------------




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