[Public-List] Boom Vang

Thu Nov 3 20:00:57 PDT 2016

Aboard Surprise, we've removed core beneath the stanchion bases and replaced it with solid epoxy and glass laminate    When we bolted the bases back in, we gave each a backing plate of white oak of much larger dimensions than the bases above decks. 

To help each stanchion out, so they don't stand alone, we keep our lifelines very hard tensioned.  I replaced the PVC covered 7x7 wire with bare 1x19 

G

On 2016-11-03, at 10:49 PM, Gordon Laco via Public-List <public-list at lists.alberg30.org> wrote:

> Hi Kris
> 
> I'd say they're just as important. 
> 
> G
> 
> On 2016-11-03, at 10:23 PM, Kris Coward <kris at melon.org> wrote:
> 
>> 
>> So you're saying the chainplate knees can wait then? And the mast
>> support beam? How about the stem casting, it's kinda like a stanchion
>> base...
>> 
>> Not that any of those parts are in need of repair on Candy Cane, though
>> I did have to re-coore some deck back in '08, around the base of the
>> stanchion that I secure the doorframe for my winter enclosure to. I
>> learned my lesson and now leave the door out of the frame until the
>> shrinkwrap's on.
>> 
>> Stanchion bases have struck me as relatively fragile places ever since.
>> (Especially since for most things I'd be tempted to attach to them,
>> there's a spot right next to them on the toe rail, and I know those
>> spots on the toerail take heavy loads as a matter of routine).
>> 
>> -K
>> 
>> On Thu, Nov 03, 2016 at 09:23:16PM -0400, Gordon Laco wrote:
>>> Hi Kris,
>>> 
>>> If one has any doubt at all that those bases and the deck they're bolted through aren't about the strongest part of their boat, there's nothing that should be addressed before they're repaired and full integrity is restored to them.  
>>> 
>>> Gord #426 Surprise.  
>>> 
>>> On 2016-11-03, at 8:23 PM, Kris Coward via Public-List <public-list at lists.alberg30.org> wrote:
>>> 
>>>> 
>>>> I wouldn't prevent to a stanchion either (I use the tracks on the side
>>>> decks instead), but I would like to point out that if you're using the
>>>> same assembly as both a vang and a preventer, you'll probably be keeping
>>>> it snug enough before the accidental gybe that the boom won't have any
>>>> real play to build up speed to crash with. It'll still backwind abruptly
>>>> enough to make a bit of a shock load, but it'll be a far cry from
>>>> delivering the force of a full-on crash gybe.
>>>> 
>>>> I just keep it off the stanchion bases, because I work under the
>>>> principle that they should only ever be loaded with the weight of the
>>>> fender that's tied to the lifeline right at them. Even when people stick
>>>> to that, the stanchion bases are *still* the first part of the deck to
>>>> develop cracks, let in water, and start rotting out the core. Why anyone
>>>> would even consider making that particular repair come sooner is
>>>> entirely beyond me.
>>>> 
>>>> Cheers,
>>>> Kris
>>>> 
>>>> On Thu, Nov 03, 2016 at 03:48:29PM -0400, Lawrence Morris via Public-List wrote:
>>>>> This arrangement works great in light to medium air. However I would not prevent to a stantion base in heavy air. It is not designed to take the load of a crash jibe.  You will damage the base and/or the deck. 
>>>>> 
>>>>> Just a word of caution.
>>>>> 
>>>>> 
>>>>> 
>>>>> Larry, Solstice 501
>>>>> 
>>>>> Sent from my iPad
>>>>> 
>>>>>> On Nov 3, 2016, at 10:42 AM, Greg Bover via Public-List <public-list at lists.alberg30.org> wrote:
>>>>>> 
>>>>>> One of the things I like about my vang, which is line and blocks, is that I
>>>>>> make it off to a bail at the mast base with a snap shackle. This allows me
>>>>>> to unshackle it quickly when heading down wind and run it to my forwardmost
>>>>>> stanchion base so that it acts as a main preventer. Takes some of the worry
>>>>>> out of running wing-and-wing.
>>>>>> 
>>>>>> Greg Bover
>>>>>> A-30 #114
>>>>>> PENSIVE FLYER
>>>>>> Gloucester, Mass.
>>>>>> 
>>>>>> 
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>>>> -- 
>>>> Kris Coward                    http://unripe.melon.org/
>>>> GPG Fingerprint: 2BF3 957D 310A FEEC 4733  830E 21A4 05C7 1FEB 12B3
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>> 
>> -- 
>> Kris Coward                    http://unripe.melon.org/
>> GPG Fingerprint: 2BF3 957D 310A FEEC 4733  830E 21A4 05C7 1FEB 12B3
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