[MHml] Synthetic rigging

[Bill Gibbs]

I’m told if the load is kept a small fraction of breaking strength (<20%?) that creep s/not be a problem.

The initial stretch in a synthetic line is due to mechanical stretch in the weave.  Pre-stretching reduces this.  Once loaded and
retightened a few times, the line becomes much more stable.  Then you still are left with elastic stretch, which is 2-3 times more
than steel, and proportional to the load over breaking strength.  Creep sets in from long time at high load in spectra.

 

Bill

Afterburner

 

  _____  

From: multihulls-bounces at steamradio.com [mailto:multihulls-bounces at steamradio.com] On Behalf Of Lincoln Baxter
Sent: Friday, May 04, 2007 8:51 AM
To: multihulls at steamradio.com
Subject: [MHml] Synthetic rigging

 

On the subject of creep, I am thinking of using synthetic line for my steering system that I am putting together for my 30 foot cat.
I have a Lewmar pedestal with a drag link that I plan to connect directly to a quadrant under the bridgedeck, where the lines for
each rudder would attach. There would be a total of about 24 feet of ¼” line for each rudder. Is the constant load or dynamic load
stretch likely to be a problem?

 

Lincoln Baxter

Zbiggy II

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://steamradio.com/pipermail/multihulls/attachments/20070505/421766c9/attachment.htm