Sport Today

by **Martin Baine** » Mon, 24 Mar 1997 04:00:00

My mast (CK35) has about a 3 inch split at the join of the top section.
I was wondering if anyone out there knew the best way to fix it, or
should it be tossed ?

Thanks in advance.
Martin (Cape Town - South Africa - Yehah)

by **Exkra** » Mon, 24 Mar 1997 04:00:00

wrap it with unidirectional Graphite in Epoxy! West System markets rolls
of 1" wide material that's totally perfect for this sort of job. I think
they have a distributor in your neck of the woods.
Good Luck
Eva

by **Anthon** » Mon, 24 Mar 1997 04:00:00

Quote:

> My mast (CK35) has about a 3 inch split at the join of the top section.
> I was wondering if anyone out there knew the best way to fix it, or
> should it be tossed ?

> Thanks in advance.
> Martin (Cape Town - South Africa - Yehah)

I have always consider the mast a crictical component of rig. It is
safer to toss it, but it might be repairable.

by **Wolfgang Soerge** » Tue, 25 Mar 1997 04:00:00

Quote:

> My mast (CK35) has about a 3 inch split at the join of the top section.
> I was wondering if anyone out there knew the best way to fix it, or
> should it be tossed ?

3 inch is already quite a lot. I tried to fix a mast split at the joint,
using unidirectional carbon ( 2 layers of 5oz quality, some more
over the crack & epoxy - holds so far but then i don't use this mast
in the waves and have retired it as backup now.

For wave use it is probabely best to get a new top - maybe you
find somebody who has broken a base. Otherwise it is pretty sure
to snap sometime, possibly destroying the luff sleeve of the sail.

An alternative would be to use it on a really big day - when you
are sure you will break stuff anyway :-)

--
Wolfgang Soergel
Lehrstuhl fuer Nachrichtentechnik phone: ++49-9131-857781
Universitaet Erlangen-Nuernberg fax: ++49-9131-303840
Cauerstrasse 7 email:

D-91058 Erlangen, GERMANY
http://www.nt.e-technik.uni-erlangen.de/~wsoergel

by **Cullen Cho** » Thu, 03 Apr 1997 04:00:00

On Sun, 23 Mar 1997 11:01:44 -0800, Martin Baines

Quote:

>My mast (CK35) has about a 3 inch split at the join of the top section.
>I was wondering if anyone out there knew the best way to fix it, or
>should it be tossed ?

>Thanks in advance.
>Martin (Cape Town - South Africa - Yehah)

I would wrap it with kevlar and epoxy instead. I think the split will
have too much of a point load for graphite and end up snapping. I
think you would be better insured with kevlar.

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