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Old 11-05-2016, 08:39   #1
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Centerboard mechanism Alden 44

Hello guys

I just bought a Alden 44 and I have a problem with the centerboard mechanism.
Has anybody an idea how it works and or drawings details and the access from the keel?
The hydraulic system is working fine but the centerboard doesn't move

Best wishes

rapignataro is offline   Reply With Quote
Old 11-05-2016, 10:50   #2
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Posts: 429
Re: Centerboard mechanism Alden 44

Hi Ronaldo,

I've no knowledge of your particular system but do have questions.

Presumably a centreboard would suffer much greater damage in a grounding if held down by a hydraulic ram rather than just by its own ballasted weight.

To avoid that it might be built so that the ram lifts the cb positively but only allows the cb to descend under its own weight.
In other words the ram might move normally in cb down direction but not force the cb down.

Benefit is that the cb can kick up on grounding and is more likely to survive, downside is cb can easily stick in up position without that positive lowering force.
Just like a winched system really.

Just theory, sorry

Haven't much experience with centreboards except on dinghies but did once help an owner make some tools to clear growth etc. from inside the cb trunk.
He spoke of gravel having once jammed the board when he'd beached for hull cleaning.

Even heavy iron swing keels can be jammed by barnacles.

Look forward to reading how yours turns out
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Old 11-05-2016, 13:22   #3
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Re: Centerboard mechanism Alden 44

Thak you Unclemack!

The cb is a little bit down. It's not heavy, I can move it up by my hands but not by the mechanism. I can't see it and I don't know how to access.
Maybe it has hole in the keel, that's why I need drawings.
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