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Very tight Argo centreboard

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Chillidoggy View Drop Down
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Post Options Post Options   Quote Chillidoggy Quote  Post ReplyReply Direct Link To This Post Topic: Very tight Argo centreboard
    Posted: 02 Jun 22 at 1:38pm
My Topper Argo has a very tight centreboard, so much so that two of us are unable to pull it down into position. Laid the boat on its side, and looked under the boat. I could pull the board out by hand, but it was really tight, with a loud squealing noise as I pulled it into the down position, and the same stowing it.

There are two stainless plates in the boat either side of the board which have three screws in that might be removable, but I canít find any info online on how to deal with the problem or how to perhaps remove the centreboard so I can see what might be happening, or how the board is pivoted, and would appreciate any advice.
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JimC View Drop Down
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Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 02 Jun 22 at 3:39pm
If there's no sign of a bolt through the case then I have seen (although I can't find one on line ) a setup where two plates as you describe are the outward sign of a pair of plates that go each side of the board and carry the pivot.

However I'd start with Topper. An important question, of course, is whether its always been stiff or this is something new. You did, I presume, inspect carefully to see if a stone or something has got in there are is causing the problem.



Edited by JimC - 03 Jun 22 at 6:43am
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Chillidoggy View Drop Down
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Post Options Post Options   Quote Chillidoggy Quote  Post ReplyReply Direct Link To This Post Posted: 02 Jun 22 at 6:34pm
Iíve only just bought the boat, itís secondhand, so itís my first experience afloat with it, which ended in a wasted launching as we couldnít move the centreboard much. I havenít had any in-depth look at it as yet.
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Post Options Post Options   Quote ColPrice2002 Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jun 22 at 6:46am
Hi,
The Ago centreboard is held in place by a stainless steel bracket - as you suggested.
Remove the screws, and with the boat on its side, extend the centreboard and pull the board upwards.

IIRC, the Argo uses furry pads stuck to the inside of the case to act as a friction device. Iíd suggest you make sure that these havenít become dislodged and jamming normal operation.
If the screws holding the strap wonít tighten, use drywall plugs!

Colin
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JimC View Drop Down
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Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jun 22 at 7:05am
Topper's web site lists this part, which I believe are the brackets that go each side of the plate.

https://toppersailboats.com/product/centreboard-bracket/

I'd definitely start by consulting Topper, but failing anything useful I think I would start by double checking for any foreign objects in the case. I would certainly ask for confirmation in how to remove the board, and whether there have been any issues like this before.


Thereafter, well there are all sorts of scenarios that occur to me, some more expensive than others. A hard grounding, for instance might distort those plates and cause issues. Did you get the boat privately or from a company? If the latter then there's definitely a case for discussion!



Edited by JimC - 03 Jun 22 at 7:07am
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ColPrice2002 View Drop Down
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Post Options Post Options   Quote ColPrice2002 Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jun 22 at 4:03pm
At a sail training centre, we removed the centreboard by removing the screws and pulling the cradle upwards. The centreboard had been hit hard - by another dinghy while capsized - and the cradle bent!

Colin
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Chillidoggy View Drop Down
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Post Options Post Options   Quote Chillidoggy Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jun 22 at 4:53pm
Thanks so much for the replies, Iím going to have a go at removing the centreboard next week, will report back as to what I find.
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Post Options Post Options   Quote Chillidoggy Quote  Post ReplyReply Direct Link To This Post Posted: 22 Jun 22 at 8:30am
I found loads more packing strips in the slot than there should be, replaced it with new strips, and it now works perfectly.

I'm now looking for any tips on tuning, mast rake in particular. Once again, I cannot find anything on the web, and there seems to be no Class Association, so I don't know if it has a PY. any help on this would be welcome!
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JimC View Drop Down
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Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 22 Jun 22 at 4:41pm
The PY system has next to nothing for the Argo. Not even enough to make a suggestion, well, between 1200 and 1250 is as far as I would go. All you can do is to make a list of vaguely similar boats and try and slot it in. Length is the most important factor by a mile, then weight and sail area.



Edited by JimC - 22 Jun 22 at 4:44pm
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Sam.Spoons View Drop Down
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Post Options Post Options   Quote Sam.Spoons Quote  Post ReplyReply Direct Link To This Post Posted: 23 Jun 22 at 9:04am
It is 8" longer than a L@ser Vago with a bigger rig and weighs about the same. The Vago had a PN of 1074 in 2016 so the Argo should be slightly faster*. That said my Fuller Formula spreadsheet gives a Fuller Number for the Vago of 1148 and for the Argo of 1080. Those numbers maybe a bit generous but I think around 1100 would be a good starting point if you can persuade your race committee...

* Just looked at the RS Venture (bigger) and Quest (smaller) and Great Lakes give them 1080 and 1130 respectively so 1100 seems about right for the Argo.
Spice 346 "Flat Broke"
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