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Urgent advice needed please

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James Chew View Drop Down
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Post Options Post Options   Quote James Chew Quote  Post ReplyReply Direct Link To This Post Topic: Urgent advice needed please
    Posted: 08 Apr 2013 at 11:57pm
Hello everyone, I have a 1973 Co32 and there is some corrosion on the mast. It was found behind the stainless steel fitting for the kicking strap, a few inches above deck level. When the fitting was removed it revealed corrosion on both sides of the mast, particularly on the starboard side where it has gone right through the mast leaving a hole. On each side the corrosion is limited to the approx. 40mm by 40mm square covered by the fitting.
 
The local rigging company is saying that it may be necessary to replace the mast. Since I cannot really afford to do this I have sought the advice of a few other people, all of whom think that replacement is unecessary and that this can either be repaired, or does not even need to be.
 
Can anyone offer me any advice on this please? Thanks very much.
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Galatea View Drop Down
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Post Options Post Options   Quote Galatea Quote  Post ReplyReply Direct Link To This Post Posted: 09 Apr 2013 at 3:49am
Can you sleeve the mast? (That is, cut it in half where the corrosion holes are, insert a spline, and rivet both parts of the mast to the spline.) I think a very competent rigger might be able to do something like that.  No idea how much this would cost.
Mark
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Richard Ritchie View Drop Down
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Post Options Post Options   Quote Richard Ritchie Quote  Post ReplyReply Direct Link To This Post Posted: 09 Apr 2013 at 9:09am
My mast (Z-Spars) has been in two parts from new: the join is just below deck level using an internal sleeve and machine screws.  But harder to do where there are lots of fittings.
I know John McCann decided to replace his mast for similar corrosion reasons: worth speaking with him?

Richard Ritchie
Badger of Baltimore
IRL 120
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George Isted View Drop Down
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Post Options Post Options   Quote George Isted Quote  Post ReplyReply Direct Link To This Post Posted: 09 Apr 2013 at 1:51pm

It is sadly common to find serious corrosion behind the S-steel plates at the base of the mast, you are not the first.   As others have said it may be repairable I would get a second opinion from another rigger if possible.   The old mast's are thicker than the new replacements so there is probably plenty of "meat" left.  Wondering if a patch could be welded in place but ally is not easy to weld so would need a specialist to do this.

George Isted
www.solentboatbutler.co.uk
Contessa 32 "Concerto"
Co32 Class Measurer and ex Class Captain.
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George Isted View Drop Down
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Post Options Post Options   Quote George Isted Quote  Post ReplyReply Direct Link To This Post Posted: 09 Apr 2013 at 1:52pm
I should add that later masts don't suffer as badly as there is better protection between the s-steel and the ally mast.
George Isted
www.solentboatbutler.co.uk
Contessa 32 "Concerto"
Co32 Class Measurer and ex Class Captain.
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waratah912 View Drop Down
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Post Options Post Options   Quote waratah912 Quote  Post ReplyReply Direct Link To This Post Posted: 09 Apr 2013 at 6:29pm
Local boat company here in Lymington have just done similar repairs on a Nich 32? mast, rolled a sleeve to the appropriate shape and pushed it up from the bottom. Requires removing all the fittings up to the top of the sleeve.
If you have corrosion at the bottom of the mast as I had, they fixed that by cutting off the corroded area and building up the flange on the heel fitting to compensate (the internal part had already been extended) and then re-anodising the whole fitting.
Contact me through details in members area if you want more info.
Paul Smith
Waratah
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moongirl View Drop Down
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Post Options Post Options   Quote moongirl Quote  Post ReplyReply Direct Link To This Post Posted: 10 Apr 2013 at 7:51pm
Unfortunately this is a common problem with older CO32s particularly those fitted before the advent of deck rings which cut out many of the fixings just above the deck. When we were upgrading Jemmana (currently for Sale) the Rigger refused to make any more holes in the mast & Charles bit the bullet & had a new mast fitted from Southen Spars.
An experienced Rigger should be able to advise regarding sleeving which would seem to be the only option other than a new mast.
Regards
COLIN
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Keny View Drop Down
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Post Options Post Options   Quote Keny Quote  Post ReplyReply Direct Link To This Post Posted: 10 Apr 2013 at 8:46pm
James _ Your mast is plenty strong enough. The corrosion has occured because there is no barrier between the stainless steel and the mast. It only happens at the bottom of the mast where the atmosphere is wet and salty. My answer has been to refit all the fittings using a gasket or barrier compound (duralac). My weakened kicker ring has been confined to holding halyards etc. and I made a new kicker bracker lower down with much more purchase (pic. if required). I have sailed this in all weathers for the past 10 years. If in doubt I would ask J/R's advice.
Keny
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