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Old 11-23-2005, 06:31 PM
Oblivion Oblivion is offline
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Join Date: Nov 2005
Location: San Francisco
Posts: 1
Default Mizzen Bend

I'm currently restoring a Parker Dawson 26. I've taken the aluminium mizzen mast down and now notice a permanent bend of 1 to 2 degrees just below where the boom attaches.

In a Parker Dawson this is also just above the attachment point for the main boom sheet.

Yes.... the main sheet is anchored to the mizzen mast.

Now my question... is it a problem to have a permanent bend in the mast or is this possible a design feature for this boat? Will it affect the performance of the sail? Should I replace the mast or can I rebend it?

Any help would be greatly appreciated.
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Old 11-30-2005, 09:53 AM
Brion Toss Brion Toss is offline
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Join Date: Jun 2005
Posts: 1,180
Default Let's see, where shall we attach that mainsheet...

Hello,
Mainsheets can be real challenges to optimize, mechanically and ergonomically, and this is especially true on ketches, where the cockpit, companionway, and mizzen tend to collide with the mainsheet, main backstay, and Genoa sheets. Nailing the mainsheet to the face of the mizzen is an old and ugly dodge, simultaneously providing an unfortunate aft lead from the boom, eliminating any hope of a traveler, and, as you have noted, putting unfair loads on the mizzen mast (think: jibes). But it does give you more places to set your drink down.
The bend you see may or may not be terribly significant; how much does it deflect, over what distance? Have you also examined the mizzen butt? Sometimes the mast deforms there from the weird loads. And be sure to check the fastener holes, as the threads might have been compromised by the abovementioned shock loads.
In any event, consider installing a more efficient sheet. This will take some thought, as well as some expense ó for which reasons the sheet wasn't done right originally ó but your boat will be most grateful you took the trouble.
Fair leads,
Brion Toss
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