Ron,
I've inspected enough rigs to know that spreader bracket fasteners can be very
suspect. I've had to install new spreader bracket fasteners on several rigs
(including mine) due to loose or missing fasteners. I wouldn't recommend it
unless you know the fasteners are good.
Lifting a rig using a loop under the spreaders is a common practice. The loop
is around both spreader brackets and shares the load with a bit of tension and
friction with the mast. Jacking it up by placing a vertical board under a
single spreader bracket isn't nearly as strong. Spreader brackets and
fasteners are designed primarily for compression loads, not shear loads.
I'd consider rigging a gin pole and using the loop method. We've unstepped
masts by using a larger boat with a tall mast here. That works too but that's
for completely pulling the rig, not holding it up for hours or days while
someone works under the butt.
Dennis C.
Touche' 35-1 #83
Mandeville, LA
>________________________________
> From: Ronald B. Frerker <rbfrer...@yahoo.com>
>To: Dennis C. <capt...@yahoo.com>; cnc-list@cnc-list.com
>Sent: Tuesday, December 18, 2012 10:50 AM
>Subject: Re: Stus-List 30 Mk1 Mast step repair
>
>
>Dennis,
>Like Joe I'm working on the same issue. If his boat is like mine, we have no
>winches on the mast, but on the deck.
>Would the spreaders be sturdy enough to use with wood props and jacks the same
>way?
>Actually, are the spreaders strong enough to life the mast with line and gin
>pole? The marina operator told me NO. I tried his method of the loop just
>below the spreaders and then tied off at the gooseneck and darn near lost the
>mast. It just couldn't balance properly. I finally used the spreaders, but
>wondered if I was taking a risk.
>Any thoughts on spreader strength?
>Ron
>Wild Cheri
>C&C 30-1
>STL
>
>
>--- On Mon, 12/17/12, Dennis C. <capt...@yahoo.com> wrote:
>
>
>>From: Dennis C. <capt...@yahoo.com>
>>Subject: Re: Stus-List 30 Mk1 Mast step repair
>>To: "cnc-list@cnc-list.com" <cnc-list@cnc-list.com>
>>Date: Monday, December 17, 2012, 5:58 PM
>>
>>
>>Joe,
>>
>>First and foremost, BEFORE you do anything, measure EVERYTHING! In
>>particular, measure the elevation of the existing mast step. Even though it
>>has sagged, you will need to have a good idea where to build it to.
>>
>>I have done minor work under the mast by jacking it up. It's not for the
>>faint of heart. You really need to make sure that you can do it safely. All
>>I was doing was adding some shims under the mast.
>>
>>I placed a platform of 2 x 4's on the deck, cut a 2 x 4 to span the vertical
>>gap between a car jack an a mast
winch, loosened the rig and jacked it up a couple inches. I made a saddle
from a 2 x 4 to cradle the winch drum. This piece had the grain running
horizontally and rested on the vertical piece with scab pieces to attach it. I
was concerned that
cutting a saddle in the vertical piece would cause that piece to split.
>>
>>Dennis C.
>>Touche' 35-1 #83
>>Mandeville, LA
>>
>>
>>
>>
>>
>>
>>>________________________________
>>> From: Joe at Zialater <j...@zialater.com>
>>>To: cnc-list@cnc-list.com
>>>Sent: Monday, December 17, 2012 5:24 PM
>>>Subject: Stus-List 30 Mk1 Mast step repair
>>>
>>>
>>>Howdy Listers,
>>>
>>>I am new to the list and the new owner of a 1975 30 Mk 1. Overall she is in
>>>decent shape with a fwc A4 that runs well. Aside from needing major
>>>cleaning/polishing and lots of minor fixit stuff, she has one big ugly
>>>problem, the mast step is sagging and needs to be rebuilt. I have read up
>>>on the repair at cncphotoalbum and it looks doable for a winter project.
>>>
>>>I wonder, has anyone tried this repair without removing the mast
>>>completely? Perhaps jacking the mast up a few inches with some kind of rig
>>>from inside the cabin or from on deck? Any idea what the mast with rigging
>>>would weigh?
>>>
>>>It would save me the hassle of removing the mast and rigging, not to mention
>>>the crane fee. She is on the hard now.
>>>
>>>Cheers,
>>>
>>>Joe
>>>1975 30 Mk 1
>>>Mayo, MD
>>>_______________________________________________
>>>This List is provided by the C&C Photo Album
>>>http://www.cncphotoalbum.com/
>>>CnC-List@cnc-list.com
>>>
>>>
>>>
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>>
>>
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>>
>
>
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