[Public-List] Standing Rigging

[Gordon Laco]

Hello friends -

When I have been involved professionally in the replacement of  
standing rigging, I always encourage the client to send me their old  
shrouds.  Even in one-designs there can be surprises with regard to  
lengths.  The only way to be sure is to make the new stays and shrouds  
with the old ones as patterns.

Gord #426 Surprise


On 25-Sep-09, at 12:37 PM, Bill Wallace wrote:

> I'm not sure of the total length, but if you print out a copy of:
> http://www.alberg30.org/boat/A30sailplan.jpg
> on a regular sheet of paper, you can measure them on the plan  
> relatively easily, then add 1' extra per stay for wastage.  A  
> drawing program can also be used to fairly easily measure the  
> stays.  Please submit your lengths after you have built the stays to  
> the website as it would be helpful to know all the lengths.
>
> If you want to compute the lengths, stay length = sqrt(height of  
> stay^2 + length at base),   so for instance, the height of the back  
> stay is 38' (36 mast + 2' to deck), and the length from the base of  
> the mast is 17', so the back stay is about 41.6', so I would buy 43"  
> for that stay (this is the longest stay on the Alberg 30, so this is  
> the length of backup wire you should keep on board for emergency use).
>
> Also, you should be familiar with the article from good old boat, a  
> web-copy of which is available at:
> http://www.bosunsupplies.com/GoodOldBoatQuickAttach.CFM
> which tested the various do it yourself connections.
>
>
> Finally, if you are using 1/4" on the lower, you MUST ensure that  
> your chainplates have sufficient clearance to drill the larger size  
> holes, or you have to replace them (I recommend that latter if you  
> are going up in size, as they are a bit undersized regardless - at  
> least 1 mast has been lost due to undersized chainplates on an  
> Alberg 30).  I don't remember the clearance formula as to how much  
> material needs to be left after drilling the larger hole, but it is  
> some multiple of the hole size that needs to remain all around the  
> new hole (I think I have the required clearances at home in a table  
> in a book somewhere, so I can probably find them for you if you  
> need).  Most chainplates will not have this clearance and will not  
> be usable drilled oversize as they are already close to the limits.   
> The problem with the size change is that if it weakens the  
> chainplate enough from material loss, then you are really increasing  
> the changes of losing your mast, not
> helping yourself keep it by having bigger stays.
>
> Thanks,
> Bill.
>
>
>
>
> ----- Original Message ----
> From: Derrick Serrer <cptn_derrick at yahoo.ca>
> To: public-list at lists.alberg30.org
> Sent: Friday, September 25, 2009 1:26:59 AM
> Subject: [Public-List] Standing Rigging
>
> Hello everyone!
> Was wondering if anyone might have on hand the total number of feet  
> I need to order of 1x19 standing rigging in order to replace all  
> standing rigging one of our boats?
> For simplicity sakes I am going to use 1/4 inch on the inner/lower  
> shrouds as well.
> Thanks in advance,
> Derrick
> Mara II
> #127
>
>
>
>       
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