[C320-list] Cracked Mast

[Chris Burti]

This is the first crack that I have heard of being reported on a
C-320. You really need to get a competent rigger to check it out.

In order to determine whether to repair or replace, you first need to
determine what caused the crack...i.e. is it the result of metal
fatigue, corrosion, or caused by over stressing from high winds or due
to improperly adjusted rigging tension.

Small cracks in non loaded sections can sometimes be repaired by
welding. I know of instances of mast base corrosion in boats of other
manufacturers that were successfully repaired by cutting off a couple
of inches from the base of the mast and fabricating a collar in order
to retain the original mast height. Masts that have cracked have been
successfully repaired by cutting out the damaged section and joining
the parts with a reinforcing sleeve.

Because of the loads on a mast this size and the risks associated with
an inadequate repair, these repairs are not recommended as DIY
projects.




On Mon, Jan 23, 2012 at 12:31 PM, Norm Ethier
<nethier at ethiersandandgravel.ca> wrote:
> I have a 1999 C320 with a crack mast at the bottom about 2" high. Does anyone else encounter a similar problem and if so what did you do to fix it?
>
> Norm Ethier
> Hull # 660
> Sudbury, Ontario.
> Canada
>
> ----- Original Message -----
> From: c320-list-bounces at lists.catalina320.com <c320-list-bounces at lists.catalina320.com>
> To: Catalina List <c320-list at catalina320.com>
> Sent: Mon Jan 23 11:33:42 2012
> Subject: Re: [C320-list] Boom Sheave Lube
>
>
> Any white grease will work even sail kote, less is better if you use grease. However make sure the sheaves are not binding on the boom as mine are. You may be aware (at least on my boat) the the entire sheave assy will slip out of the boom if there are no lines on it. My sheave assy goes too far into the boom and the sheaves bind on it. Haven't come up with a fix yet, something to keep the sheave axle from sliding too far into the end of the boom??
> Cheers
> JohnM
> #574 1999
>
>
>
>> Date: Mon, 23 Jan 2012 07:25:55 -0800
>> From: wmo48 at yahoo.com
>> To: c320-list at catalina320.com
>> Subject: [C320-list] Boom Sheave Lube
>>
>> Since the boom sheaves don't roll on ball-bearings they tend to seize up on
>> Amanda Lu, always at the best times; like when it start to blow 25 and reefing
>> the main is suddenly a very good idea.  Anybody got any ideas on a good
>> lubricate ?  I was thinking lithium grease ?
>> Mike Ott
>> 'Amanda Lu'
>> #508
>



-- 
Chris Burti
Farmville, NC