Rig Tuning...Any backstay on?

#1 brianbeyyonug

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Posted 26 May 2010 - 10:06 AM

I've got a copy of the Quantum J22 Tuning guide and will be using their rig tensions for at least a starting point. The question is, do you put on any Backstay before tensioning the shrouds? The answer is likley no, but I thought I would ask just to get other opinions.

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#2 Guest_Chris Doyle_*

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Posted 26 May 2010 - 10:57 AM

The backstay should be attached, but without any tension.

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#3 brianbeyyonug

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Posted 31 May 2010 - 06:49 AM

Thanks Chris..

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#4 Guest_Alan_*

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Posted 14 February 2011 - 10:23 PM

Does anyone have any idea of what the total load would be, on the uppers, while driving upwind, say in 15+? I am trying to determine the required strength of the turnbuckles - and thought I would just throw it out there.... Surely it can't exceed 40,000 psi....right?

Since apparently you can't post new threads - I thought this thread might be the best shot...

Thanks!

Alan

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#5 Guest_Cdoyle_*

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Posted 15 February 2011 - 12:48 PM

Alan:

I have no idea, but I have a couple of comments:

1. The loads won't be static, and I can imagine that the upper shroud on the windward gets shock loaded every time the idiot driver (that would be me on my boat) runs into the wave in front of him.

2. Make sure you check the class rules if you are buying replacements.

3. I would think that Hall Spars would be the best place to try to get the information you seek. They have supplied the masts and standing rigging for most of the J/22 built in the US.