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2547 View Drop Down
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    Posted: 09 Oct 17 at 12:31pm
Originally posted by GarethT

Is a big wide (fore and aft) case designed to allow the DB to pivot. Now everyone packs it out with foam to the db just goes up and down. I just want to tidy up the bottom end.

I'm not sure if anything other than 'foam' is allowed for packing. Can't find anything specific in the class rules.

I believe the class rule says it has to be compressible so that there is not too much damage when you run aground.

The Tasar case is a pigs ear ... I believe the Aussie's have now manufactured inserts that can be fixed into the slot now such that it turns the rectangular slot into a profiled hole that matches the daggerboard. 

I can't find any details about this on the webs and as ever with the Tasar class the Aussies seem to control what happens and then not tell anyone ...

The Tasar is the best 2 person boat that never caught on in Europe ... shame ...


Edited by 2547 - 09 Oct 17 at 12:33pm
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Riv View Drop Down
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Posts: 353 		Post Options Post Options   Quote Riv Quote  Post ReplyReply Direct Link To This Post Posted: 08 Oct 17 at 11:09pm
Builders foam is really cheap (sometimes £3 a can ) and is easy to apply but weak. It crushes easily. If you don't mind redoing it several times a year it will be fine........I always reuse a can by taking the nozle assembly off and poking a screw down it. The foam solidities around the screw and when you want to reuse it pull the screw out. Always blow through the nozle assembly after use to remove the foam. The only problem I have with the can is that they go flat quickly after the first use but this seems random, depends on each can.Do it, cheap, quick and easy to remove.
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piglet View Drop Down
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Posts: 514 		Post Options Post Options   Quote piglet Quote  Post ReplyReply Direct Link To This Post Posted: 08 Oct 17 at 9:00pm
PET foam is very resilient and can be stuck in with a bit of epoxy, or chewing gum. Doesn't take up water either.
https://www.ecfibreglasssupplies.co.uk/product/airex-t90-100-foam-10mm

Edited by piglet - 08 Oct 17 at 9:02pm
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GarethT View Drop Down
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Posts: 714 		Post Options Post Options   Quote GarethT Quote  Post ReplyReply Direct Link To This Post Posted: 08 Oct 17 at 7:41pm
Is a big wide (fore and aft) case designed to allow the DB to pivot. Now everyone packs it out with foam to the db just goes up and down. I just want to tidy up the bottom end.

I'm not sure if anything other than 'foam' is allowed for packing. Can't find anything specific in the class rules.
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Sam.Spoons View Drop Down
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Posts: 3401 		Post Options Post Options   Quote Sam.Spoons Quote  Post ReplyReply Direct Link To This Post Posted: 08 Oct 17 at 7:23pm
Builders expanding foam is unsuitable for this job (and, like DD I've never had much success reusing a can after the first use). Two pack PU foam is good for larger voids, I have used it in the past to repair sailboards but even that has a somewhat variable cell size and is relatively heavy but it is pretty much closed cell so does not readily absorb water. But it is also very soft and not what I would use either.

Depending on precisely what you are doing with it, epoxy and micro balloons would also be my suggestion, it is light and sands well but is properly impervious and hard wearing (which expanding foam is not).

However, the exposed foam in your DB case, is it there to fair the case or is it that the DB has worn away the skin layer through to the foam core? if the latter you are probably going to have to do a more sophisticated repair or you'll simply be storing up problems for the future. 


Edited by Sam.Spoons - 08 Oct 17 at 7:24pm
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Do Different View Drop Down
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Posts: 1312 		Post Options Post Options   Quote Do Different Quote  Post ReplyReply Direct Link To This Post Posted: 08 Oct 17 at 6:41pm
You talking a smallish amount? Epoxy resin and micro balloons perhaps?  Those cans of expanding foam are not cheap, pretty hard to control and I've not had much luck on revisiting them so end up a single use unless you're better than me at cleaning the nozzle. 
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2547 View Drop Down
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Posts: 1151 		Post Options Post Options   Quote 2547 Quote  Post ReplyReply Direct Link To This Post Posted: 08 Oct 17 at 5:24pm
I think in Aus they are gluing in packers that actually match the profile of the board now rather than have a rectangular hole. 
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JimC View Drop Down
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Posts: 6662 		Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 08 Oct 17 at 5:01pm
I'd be inclined to blag some offcuts of proper boat building foam, shape them and glue them in with epoxy and filler. You need to be quite careful round daggerboard cases because its suprisingly easy to bend them in that fatal fraction of a millimetre that stops the board going up and down readily.
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GarethT View Drop Down
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Posts: 714 		Post Options Post Options   Quote GarethT Quote  Post ReplyReply Direct Link To This Post Posted: 08 Oct 17 at 4:46pm
It’s for the bottom of a tasar daggerboard case, to give something that can be rubbed down/faired. The foam that’s in there is a bit ratty so I’m just looking for something quick and cheap to fill the bottom half inch. Any time spent working on it comes out of my sailing allowance so I don’t want to strip out all the existing packing and start from scratch.

Edited by GarethT - 08 Oct 17 at 4:47pm
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zippyRN View Drop Down
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Posts: 437 		Post Options Post Options   Quote zippyRN Quote  Post ReplyReply Direct Link To This Post Posted: 08 Oct 17 at 4:34pm
i think Jim C and 423 zero have covered the main issues 
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