[Capri25] Backstay question

[Garry Cooke]

sorry I noticed a typing error, the 35% should be 25%.regards
Garry

On Tue, Dec 30, 2008 at 10:39 AM, Garry Cooke <garry.cooke at gmail.com> wrote:

> You need to be careful how much force you are putting into your boat. The
> backstay tension should be limited to no more than 35% the breaking strain
> of the backstay wire. If you put too much tension in the rig, you will
> increase significantly the compression force in the mast and risk damage to
> the bottom of your boat. I know of two Express 30's where the owners put too
> much back stay tension and drove the mast down, and cracked the bottom of
> the boat, and in one case, let water in. I also know of some Viking 28's
> where the deck has been buckled by too much backstay tension. It would be
> wise to get a Loos gauge to ensure that you are not over stressing your rig.
> good luck
> Garry
> Capri 25 'Endeavour'
>
> On Tue, Dec 30, 2008 at 10:24 AM, Ruedenberg, Emanuel (Rudy) <
> Emanuel.Ruedenberg at bsci.com> wrote:
>
>>  You should definitely call Bruce Tamm from 'Tsunami' if he does not
>> answer this email.  He and I know others, have had terrible problems at the
>> bow.  I seem to remember that the force of the forestay separated the
>> foredeck or something…..
>>
>>
>>
>> good luck
>>
>>
>>
>> rudy
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> *Emanuel 'Rudy' Ruedenberg*
>>
>> Sr. Quality Engineer
>>
>> CQE,CQA
>>
>> Boston Scientific
>>
>> 763-494-1468
>>
>> Cell 612-201-7238
>>
>> MS B260
>>
>>
>>   ------------------------------
>>
>> *From:* capri25-bounces at lists.wyc.org [mailto:
>> capri25-bounces at lists.wyc.org] *On Behalf Of *Kenneth Reiff
>> *Sent:* Tuesday, December 30, 2008 2:28 AM
>> *To:* capri25 at lists.wyc.org
>> *Subject:* [Capri25] Backstay question
>>
>>
>>
>> We've replaced the standard "pinch the two wires together" type of
>> backstay adjuster with a very nice, and powerful, cascade system as we've
>> always had problems getting the backstay tight enough to get rid of headstay
>> sag while in breeze.  With this new cascading system, trust me, we're not
>> going to have headstay problems anymore.
>>
>> My question?  I looked below at the very front of the boat in front of
>> that little wooden piece, and the headstay fitting is only through bolted at
>> the top with no back up plate, and only one bolt in the front stem, under
>> the rub rail.  Typical Catalina construction...  cheap.
>>
>> Has anyone in the Wayzata fleet improved their backstay adjusting
>> arrangement with a more powerful cascade?  And has anyone ever beefed up the
>> headstay piece? I'm thinking of removing it, then welding on a much longer
>> tang, so that I have about three bolts through the stem of the boat, not
>> just one.  Plus, Catalina used no back up plates, only washers, which scares
>> me.  Has anyone put on too much backstay tension and yanked the headstay
>> fitting right off the freaking deck?  Or am I just being paranoid because
>> these boats are built so poorly?  Thoughts on yanking off your headstay
>> fitting would be appreciated.  If you could, please email me at
>>
>> --
>> Ken Reiff
>> Email:  kenreiff at gmail.com
>> Cell:     562-637-6630
>>
>> _______________________________________________
>> Capri25 mailing list
>> Capri25 at lists.wyc.org
>> http://lists.wyc.org/mailman/listinfo/capri25
>>
>
>
>
> --
> e-mail: garry.cooke at gmail.com
>



-- 
e-mail: garry.cooke at gmail.com
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