New Posts New Posts RSS Feed: Crack in 14 mast
  FAQ FAQ  Forum Search   Register Register  Login Login

Crack in 14 mast
 Post Reply Post Reply Page  12>
Author
  Share Topic Share Topic  Topic Search Topic Search  Topic Options Topic Options
m_liddell View Drop Down
Really should get out more
Really should get out more


Joined: 27 May 05
Location: United Kingdom
Online Status: Offline
Posts: 583 		Post Options Post Options   Quote m_liddell Quote  Post ReplyReply Direct Link To This Post Topic: Crack in 14 mast
    Posted: 11 Aug 05 at 10:05pm

I've just noticed 2 3" long cracks about 3ft from the base of the mast on my I14. Each is in the same place on opposite sides. The boat isn't insured (can't afford it) any ideas how to fix this and how long the mast is likley to last? It's carbon. I really don't have £1600 to replace it!

Any help would be awesome.
Back to Top
JimC View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 17 May 04
Location: United Kingdom
Online Status: Offline
Posts: 6662 		Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 11 Aug 05 at 11:17pm
You need to tell us what fittings and so on the cracks are near and in what relationship to them, and what orientation they are. A photo (you'll need to get photoshop out to highlight the cracks 'cos they don't photograph well) would be ideal.

But yes, its very repairable and the mast will last indefinitely if well repaired. Normally the options are to add extra carbon sternegth across the cracks or just to sleeve the pole, eother inside or outside.

Back to Top
Scooby_simon View Drop Down
Really should get out more
Really should get out more


Joined: 02 Apr 04
Location: United Kingdom
Online Status: Offline
Posts: 2415 		Post Options Post Options   Quote Scooby_simon Quote  Post ReplyReply Direct Link To This Post Posted: 11 Aug 05 at 11:18pm
Originally posted by m_liddell

I've just noticed 2 3" long cracks about 3ft from the base of the mast on my I14. Each is in the same place on opposite sides. The boat isn't insured (can't afford it) any ideas how to fix this and how long the mast is likley to last? It's carbon. I really don't have £1600 to replace it!

Any help would be awesome.

 

Your boat is not insured, but I assume you have 3rd Party cover or you could be in mega trouble if you cause an accident and you are found liable. 
Wanna learn to Ski - PM me..
Back to Top
guytoon View Drop Down
Groupie
Groupie
Avatar

Joined: 16 Feb 05
Location: France
Online Status: Offline
Posts: 82 		Post Options Post Options   Quote guytoon Quote  Post ReplyReply Direct Link To This Post Posted: 12 Aug 05 at 9:10am

It's probably easily fixable but I would recommend you not tu use it before fixing it !!!

I let a little crack on a mast last year and it didn't last really long

Cherub 2692 "NBS"
Back to Top
Ginger_69 View Drop Down
Far too distracted from work
Far too distracted from work
Avatar

Joined: 04 Jun 05
Location: United Kingdom
Online Status: Offline
Posts: 481 		Post Options Post Options   Quote Ginger_69 Quote  Post ReplyReply Direct Link To This Post Posted: 12 Aug 05 at 2:32pm
well you could wrap the bottom of the mast in carbon to strenghten it that would prob work or you could rivet a pice of alu all round the mast were the cracks are.
Chew valley lake s c
Topper(RED)-29412
I14 1209
lightning-168
Whaam (cherub)
Atum bom (cherub)old crew (the 1 in the youtube vids)
Will be arup skiff crew aka marmite
Back to Top
m_liddell View Drop Down
Really should get out more
Really should get out more


Joined: 27 May 05
Location: United Kingdom
Online Status: Offline
Posts: 583 		Post Options Post Options   Quote m_liddell Quote  Post ReplyReply Direct Link To This Post Posted: 12 Aug 05 at 3:31pm

Originally posted by JimC

You need to tell us what fittings and so on the cracks are near and in what relationship to them, and what orientation they are. A photo (you'll need to get photoshop out to highlight the cracks 'cos they don't photograph well) would be ideal.

But yes, its very repairable and the mast will last indefinitely if well repaired. Normally the options are to add extra carbon sternegth across the cracks or just to sleeve the pole, eother inside or outside.

I'll try and get some pics this weekend. I have some carbon to put around it but I was wondering if drilling holes at the crack tips would help to stop them propagating further?

I'm pretty sure the fittings are not the cause since the cracks are identical both sides and away from any fittings.
Back to Top
Skiffe View Drop Down
Far too distracted from work
Far too distracted from work
Avatar

Joined: 24 Jun 05
Location: Australia
Online Status: Offline
Posts: 220 		Post Options Post Options   Quote Skiffe Quote  Post ReplyReply Direct Link To This Post Posted: 12 Aug 05 at 4:37pm

Originally posted by Ginger_69

well you could wrap the bottom of the mast in carbon to strengthen it that would prob work or you could rivet a piece of alum all round the mast were the cracks are.

DO NOT put aluminium with carbon. It causes a "battery" effect that eats at the carbon until there is no carbon left.

Depending on the cracks, including location on the mast and more importantly what caused them (fittings, compression, fatigue, UV etc.) it can be Very easy repair which will be just as strong as the original mast. Normally 2-3 layers of carbon unis and 2-4 layers of bi-directional cloth should do it, but lets see your pics first.
12footers. The Only Way to FLY

Remember Professionals built the titanic, Amateurs built the ark.
Back to Top
Skiffe View Drop Down
Far too distracted from work
Far too distracted from work
Avatar

Joined: 24 Jun 05
Location: Australia
Online Status: Offline
Posts: 220 		Post Options Post Options   Quote Skiffe Quote  Post ReplyReply Direct Link To This Post Posted: 12 Aug 05 at 4:43pm
Originally posted by m_liddell

Originally posted by JimC

You need to tell us what fittings and so on the cracks are near and in what relationship to them, and what orientation they are. A photo (you'll need to get photoshop out to highlight the cracks 'cos they don't photograph well) would be ideal.

But yes, its very repairable and the mast will last indefinitely if well repaired. Normally the options are to add extra carbon sternegth across the cracks or just to sleeve the pole, eother inside or outside.

I'll try and get some pics this weekend. I have some carbon to put around it but I was wondering if drilling holes at the crack tips would help to stop them propagating further?

I'm pretty sure the fittings are not the cause since the cracks are identical both sides and away from any fittings.

Drilling holes will not stop carbon cracking, like metal. If they are identical in length and position on the mast, compression could be a good guess. was the mast Pro built or made in a backyard, yes it can be done!!
12footers. The Only Way to FLY

Remember Professionals built the titanic, Amateurs built the ark.
Back to Top
JimC View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 17 May 04
Location: United Kingdom
Online Status: Offline
Posts: 6662 		Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 12 Aug 05 at 8:47pm
Originally posted by Skiffe


DO NOT put aluminium with carbon. It causes a "battery" effect that eats at the carbon until there is no carbon left.

Other way round actually mate, but yes its a really bad idea. If one is really silly one puts an alloy sleeve inside a carbon spar, the alloy goes fizz, fizz and corrodes, the corrosion expands, the resin in the carbon tube microcracks, the fibres aren't supported and down your early model RS600 mast comes...
Back to Top
Ginger_69 View Drop Down
Far too distracted from work
Far too distracted from work
Avatar

Joined: 04 Jun 05
Location: United Kingdom
Online Status: Offline
Posts: 481 		Post Options Post Options   Quote Ginger_69 Quote  Post ReplyReply Direct Link To This Post Posted: 12 Aug 05 at 9:14pm
ok maby it was a bad idea
Chew valley lake s c
Topper(RED)-29412
I14 1209
lightning-168
Whaam (cherub)
Atum bom (cherub)old crew (the 1 in the youtube vids)
Will be arup skiff crew aka marmite
Back to Top
 Post Reply Post Reply Page  12>

Forum Jump Forum Permissions View Drop Down

Bulletin Board Software by Web Wiz Forums® version 9.665y
Copyright ©2001-2010 Web Wiz
Change your personal settings, or read our privacy policy