[Public-List] mast beam repair

[crufone at comcast.net]

Hi Charles, 

When I get to this repair on my boat #133 I plan to jack the beam up to it's proper/original position determined by how the doors fit the casing trim into the v berth.  This part has been done over the past year after the mast was removed . 

 A template will be made of the lower curved surface of the beam so I know what the shape of the inside curve is. The beam will then be removed from the boat and the laminates taken apart. After the laminates have been  cleaned up and sanded they will be relaminated using an Epoxy a dhesive. A form will be made from the template and the laminates laid and secured to it with pins and wedges. 

After the whole mess is cured it will be cleaned up and reinstalled back into the boat as it was originally. 
The original adhesive functioned well for about 43 years. T he laminates have not broken but the adhesive has given way allowing the laminates to slip against each other.  I like the look of the wooden beam and wish to retain that appearance. I expect the Epoxy repair to last beyond the rest of my life time. That works for me. 

Another advantage of removing the beam is that I will be able to inspect the upper surface of the beam for any deterioration from possible water intrusion. I should also be able to better seal the passages for the wiring which passes through the coach roof adjacent to the mast step plate from the underside of the coach roof. 

Michael #133----- Original Message ----- 
From: "bikecharles" <bikecharles at earthlink.net> 
To: public-list at lists.alberg30.org 
Sent: Tuesday, January 5, 2010 9:08:39 PM GMT -05:00 US/Canada Eastern 
Subject: [Public-List] mast beam repair 


Thanks to all who provided input on my last inquiry about the mast beam.  I'm still pondering the best approach to repair the mast beam on Sea Hawk #221.  I've contacted the outfit mentioned on the A30 website about the Aluminum Sister Plates for the mast beam.  They've become a bit pricey these days...$420.00 before shipping.  Considering the simplicity of the repair and the relatively low cost of the raw materials, (about $145.00 for for the Aluminum),it would make sense to fabricate them myself.  Does anybody know of an existing pattern or schematic for the plates.  Additionally, I was curious if those that have done this repair removed, repaired or did anything to the old tabbing on the beam or is it just left and covered?   
Thanks again 
Charles 
Sea Hawk #221 
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