[Public-List] loose casting on propeller shaft at end of keel

[Peter Milley]

Hi John, 
Thanks for taking the time to give me a comprehensive and detailed reply. I
did in fact hear from Gord and had consulted with George Dinwiddie last
evening.  I think I'm on the right track. If you have the occasion to be in
sailing around Kingston over the summer please let me know. Appended is my
reply to Gord outlining what I have done to correct the problem.
 
Hi Gord,
As always Gord it's great to hear from you. 

First thing this morning I cleaned out then epoxyed the two holes and ran a
new bead of 4200 around the joint after having consulted with George
Dinwiddie last evening. I had given the shaft assembly a 1/4 turn with the
bolts out breaking the seal so the 4200 should re-bed the joint nicely. I
was careful not to get calking in the water holes on the casting. Once
everything sets up I'll tap new threads put in the same shiny stainless
bolts which show no signs of wear then brush on some antifouling on the
joint and bolts. 

I have Ginseng here in the yard on her trailer to get a few small jobs done
before we haul her south for the winter. I'm going to pull apart the galley
to re-surface the galley counters next week and install a great used dodger
I picked up in Portland Maine a month or so ago on route to Boston to see
the Volvo Ocean Race Fleet in-port Boston race.
  
On a personal note we too have been having a great season as well. I did a
trawler delivery from Annapolis up the ditch to Kingston a few weeks ago and
have been sailing Privateer a lot locally. On the tall-ship side, we are
doing a battle reenactment with an attack on Fort Henry on Aug 22 to gear up
for the War of 1812 Bicentennial with Regional Bicentennial Advisory Board.
Justin is on the 6 month Nav course at CFB Esquimalt and won't be back to
his ship Halifax until Oct. He is going to be in Kingston on route home to
Halifax so we can do a very belated annual Father's Day Sail.

Peter

-----Original Message-----
From: public-list-bounces at lists.alberg30.org
[mailto:public-list-bounces at lists.alberg30.org] On Behalf Of John Birch
Sent: July 26, 2009 9:51 AM
To: Alberg 30 Public List -- open to all
Subject: Re: [Public-List] loose casting on propeller shaft at end of keel

The top & bottom silicon bronze lag bolts are threaded into the glass 
deadwood in the aperture to hold the cutlass housing top and bottom.

The cutlass housing its self is threaded onto the stern tube.

To remove the cutlass housing is a two person job.

One person inside with a monkey wrench, with its jaws padded to not gouge or

crush the bronze stern tube.

The other person outside turning anticlockwise the unbolted Cutlass housing 
very slowly with another monkey wrench with padded jaws.

The person inside must be very careful to not let the stern tube rotate 
during this process, which would break the bond with the dolfinitie bedding 
compound which runs the length of the stern tube inside the hull.

If the cutlass bolts have nothing to grab to inspect the glass. Has water 
gotten in and eroded the resin in the glass leaving only raw grey fibers of 
glass with no resin in them ?

If so, this will need to be thoroughly dried and epoxy resin reinserted 
along with new glass fibers to strengthen the bond. Then drill and tap the 
repair to accept new lag bolts - make sure the new lag bolts are silicon or 
manganese bronze from a reputable fastener supplier.

Up here in the Toronto area I use Pacific Fasteners products, they are on 
Chauncey Ave off Islington Ave and are very high quality.

Don't use hardware store bronze, its full of zinc and will fail.

I'm sure Gord Laco will have some thoughts on this.

My old A-30 was 544. I did not have to rebuild the holes as they were in 
good shape, but I did replace the cutlass bearing and stuffing box hose and 
replaced with new lag bolts. I used Sikkaflex 241 which is now 291 or 292 
for bedding.

Hope this is a help.

John




----- Original Message ----- 
From: "Peter Milley" <milleype at kingston.net>
To: "'Alberg 30 Public List -- open to all'" 
<public-list at lists.alberg30.org>
Sent: Saturday, July 25, 2009 11:45 PM
Subject: Re: [Public-List] loose casting on propeller shaft at end of keel


>
>
> My question relates to the casting at the aft end of the keel that 
> contains
> the propeller shaft. The lower of the two bolts appeared to be backed of a
> couple of turns and the casting had come away from the hull enough to see
> light in the crack. I tried to tighten this bolt but it acted like it was
> stripped. I backed it off and took it out and when I tried to put it back 
> in
> place it doesn't want to seem to grab on anything. Before I start messing
> with something I haven't had apart can you advise me if there is any 
> drawing
> to show this assembly? Does the bolt merely thread into the fiberglass 
> keel
> or is there a nut or something in behind that has dropped off. I tried to
> look inside but the area where it pierces the hull appears screened from
> view under the diesel fuel tank.
>
> Peter Milley
>
> Hull 475
>
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