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Attaching a lowers plate to a carbon mast |
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DaveT
Groupie Joined: 31 May 05 Location: United Kingdom Online Status: Offline Posts: 76 |
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Topic: Attaching a lowers plate to a carbon mast Posted: 15 Mar 06 at 10:36pm |
I've just got a second hand carbon mast for my IC, unfortunately its rigged for a strut not lowers, I need lowers because I've got a self tacking jib. I've got a lowers plate like this http://www.sail-sport.com/cgi-bin/ss.cgi?usr=58335&page= showitem&pid=SRISP005 but what's the best way to attach it? If I use rivets, what type should I use? Cheers Dave IC GBR 245
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Olly4088
Far too distracted from work Joined: 10 Jan 05 Location: United Kingdom Online Status: Offline Posts: 424 |
Post Options Quote Reply Posted: 16 Mar 06 at 7:45am |
Dave, I'm not sure what you could use to attach it but I do know that you have to be careful what you do use as some metals have funny reactions to the carbon and will damage it
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Phantom 1298
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Granite
Far too distracted from work Joined: 12 May 04 Location: Scotland Online Status: Offline Posts: 476 |
Post Options Quote Reply Posted: 16 Mar 06 at 8:21am |
Stainless steel rivets are probably the best bet, but you need a serious rivet gun to pull them.
They will discolour but generaly do not get any worse than that unless there is movement. Zinc chromate pase can help with this a bit but does not last long. the only way to avoid it is to ensure that the carbon can not touch the metal with a layer of epoxy. You also need to know the thickness of the mast so you can pick the correct length of rivet. If the mast is sleaved at that point it may be too thick for rivets in that case you can use self tapping screws. They are loaded in shear and work supprisingly well but the hole you drill must be exactly the right size for the screw if it is too small the laminate will crack |
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If it doesn't break it's too heavy; if it does it wasn't built right
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JimC
Really should get out more Joined: 17 May 04 Location: United Kingdom Online Status: Offline Posts: 6649 |
Post Options Quote Reply Posted: 16 Mar 06 at 9:07am |
Don't use the plate is the simple answer. Use stainless steel D rings bandaged onto onto the spar with unidirectional carbon.
Edited by JimC |
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Isis
Really should get out more Joined: 01 Sep 05 Online Status: Offline Posts: 2753 |
Post Options Quote Reply Posted: 16 Mar 06 at 1:04pm |
Id second Jims suggestion here
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