[Rhodes22-list] Demasting

[John Lock]

Agreed, your explanation is much clearer (and more accurate) than  
mine.  I also missed the part where the nut had actually backed off,  
so maybe the deck core is sound and a proper forestay attachment is  
all that's needed.

Cheers!
John Lock
~~~~~~~~~~~~~~~~~~
s/v Pandion - '79 Rhodes 22
Lake Sinclair, GA
~~~~~~~~~~~~~~~~~~


On Aug 17, 2010, at 18:03, David Culp wrote:
> John:
>
>> Clearly attaching the forestay in that manner was dangerously  
>> inadequate.
> That part of the deck is not reinforced to handle the loads  
> generated by a
> full jib under sail.>
>
> A little clarification here.  The deck can certainly handle the load  
> of a
> mere jib.  I have through-bolted an eye just behind my furler for my  
> new UPS
> sail which is basically a light weight 155% genoa.  It was done  
> correctly
> with a large diameter bolt-eye with backing plate and the other  
> attach point
> is on the upper mast.  When sailing, the deck mounting takes some of  
> the
> load of the UPS but the rest is spread to the rig.  What I think you  
> meant
> to say was that the deck is not designed to take the full load of  
> the whole
> rig which is the mast, boom and all the wind forces generated by the  
> whole
> sail plan.  That I agree with, it is not intended to do that  but it  
> speaks
> to the stoutness of our decks that it was doing it in this case- 
> until the
> nut came off.  NO WAY would I ever set this rig up in that manner  
> again.
> The only thing the forestay was accomplishing was taking enough of  
> the load
> preventing the failure of the the lower shroud which looks like it was
> shouldering most of the load.  Shrouds that carry the load of the  
> whole sail
> plan should ALWAYS be attached to chain-plates.
>
> IMO-Bill needs to bolt-seal the deck hole, get a pulpit hanger for his
> anchor and use a chain-strap on the bow to re-attach the forestay.
>
> David Culp
>
>
>
> From: rhodes22-list-bounces at rhodes22.org [mailto:
> rhodes22-list-bounces at rhodes22.org] On Behalf Of John Lock
> Sent: Monday, August 16, 2010 10:53 AM
> To: The Rhodes 22 Email List
> Subject: Re: [Rhodes22-list] Demasting
>
> Clearly attaching the forestay in that manner was dangerously
> inadequate.  That part of the deck is not reinforced to handle the
> loads generated by a full jib under sail.
>
> Since your boat seems to have something different about the anchor
> installation, you need to consider two alternatives:
>
> 1) Remove the anchor and mount it in some other fashion so the
> forestay and can be attached to a bow-mounted chainplate and secured
> properly.
>
> 2) Barring that, you should reinforce under the deck where the bolt
> passes thru with some stiff marine plywood or a chainplate and use one
> or two big, wide fender washers under the nut to spread the load out.
> Even so, I'd be cautious about that solution since the deck wasn't
> designed to do that.  You also have a nice hole to leak into the
> forepeak and deck core... sealing will be critical.
>
> Come to think of it... that may be why the rig failed!  Water leaking
> thru that mounting hole softened the deck core and allowed the washer
> and nut to be pulled straight thru.  Better check that area carefully
> and repair the deck core as necessary.
>
> Cheers!
> John Lock
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