[Public-List] mast support in liner boats

[John Birch via Public-List]

I remember our A-30 had this problem (KC-544) until we started tuning our rig like the Chesapeake racers. Mast vertical, no rake, or virtually no rake. That took the loading off the deck at the back of the mast foot, which is not supported particularly well by the Aluminium deck beam, putting most of the downward force under the front of the mast step directly over the deck beam.

Problem solved. Our decks were dry with no delam. It was a simple compression issue on the back of the step.

Hope that is a help.

Cheers from Western Lake Ontario, y'all

JB


----- Original Message ----- 
From: "Jason S via Public-List" <public-list at lists.alberg30.org>
To: "Ryan Martin via Public-List" <public-list at lists.alberg30.org>; "David Terrell" <dterrell1 at charter.net>
Sent: Saturday, February 13, 2016 8:46 AM
Subject: Re: [Public-List] mast support in liner boats


> David,
> 
> It is alot of information to explain but I have started the repair in my
> boat #457. I too have the compression aft of step which I believe is a
> combination of mast step not being centered on the beam and water
> intrusion.
> 
> On my blog I have been documenting the repair process, I have lots of
> photos and video
> 
> www.svsalacia.blogspot.com
> 
> I have also make a few poor quality video documenting the destruction
> process on YouTube
> 
> Channel on youtube is :  Cruiser2B
> 
> Jason
> #457
> Www.svsalacia.blogspot.com
> On Feb 12, 2016 10:32 PM, "via Public-List" <public-list at lists.alberg30.org>
> wrote:
> 
>> First, I will admit that I have not reviewed the discussion about mast
>> supports as I thought this was a problem for older boats as I have a
>> liner boat. i will be reviewing this discussion tomorrow morning.
>> so here is my first question. How is the mast supported in liner
>> boats. My boat is 432?
>> A little info may help. (1) I have seen the repair of the mast step
>> done on 499. I sure there is water intrusion under the mast step. (2)
>> On my boat there are about five bolts that run through the "beam" that
>> runs across the v berth bulk head. The heads of the bolt are on the
>> aft side of the boat and the nuts are on the forward side of the boat.
>> (3) there is a "dimple" in the aft side of the "mast beam". It is
>> located right under the mast step.
>> Any help would be appreciated. I have a water intrusion on the port
>> side of the mast step, but do not know its extent but I am am certain
>> that now is the time to fix it. The intrusion shows up in the ceiling
>> of the head. There is some water dripping down the port side salon
>> bulkhead. and a small drip in the port side of the v berth just a few
>> inches inside the forward side of the v berth bulkhead.
>> I hope this makes sense. This is way beyond my skills and so I need
>> any help I can get to give guidance to the pros who will do this job.
>> Thanks for any help any of you can provide. I think the thing I need
>> first is a good idea of how the liner boats are different from the
>> stick built boats with respect to the way the mast is supported.
>> David, 432
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