Viper 640 Class Association Forums

Viper 640 Public Forums => Sailing, Handling, Tips and Techniques => Topic started by: Scott Ellis on May 31, 2012, 12:08:44 AM

Title: Upper Shroud Length/tension issue
Post by: Scott Ellis on May 31, 2012, 12:08:44 AM
Ok,  So I am playing around with rig tuning with another local boat and have found that I can't match the other boat's tuning due to the fact that my uppers are too short. When my forestay is at 52.5", I can loosen the caps all the way until the holes in the threads are up inside the turnbuckle (not safe/good) and the rig is 25 on the loos - no blocking.  I put the forestay at 51.5" and the loosest I can get is 28 on the loos.  I've never used more than the first 1/2" of threads on the turn buckles and my inner stays are at the top (loosest) hole to be 'in the ball park'.  I've double checked the mast is sitting flat on the track and it's perfectly in the middle of the mast base.  

I knew that some of the hound locations on the masts 'floated' around slighty - just trying to get to the bottom of this.  I was thinking about ordering some longer threaded toggles for the bottom of the turnbuckle, but wanted to bounce off this group first if anyone has seen this and any good fixes other than new shrouds.

Thanks!

-Scott
Title: Re: Upper Shroud Length/tension issue
Post by: Jim Sears on May 31, 2012, 12:54:18 AM
Hey Scott,
Same issue on #148.  I simply added another toggle (about 1") between the chainplate ring and the toggle on the turnbuckle... works like a charm.
-Jimbo
Title: Re: Upper Shroud Length/tension issue
Post by: Justin Scott on May 31, 2012, 02:42:54 AM
Quote from: Jim Sears on May 31, 2012, 12:54:18 AM
Hey Scott,
Same issue on #148.  I simply added another toggle (about 1") between the chainplate ring and the toggle on the turnbuckle... works like a charm.
-Jimbo

Darn these Viper forums. Another $20 solution to a $300 problem. Hows a rigger to make a living ?
Title: Re: Upper Shroud Length/tension issue
Post by: Jeff Jones on May 31, 2012, 09:20:02 AM

By providing a 20 dollar product and charging 300 for it? 


Quote from: Justin Scott on May 31, 2012, 02:42:54 AM
Quote from: Jim Sears on May 31, 2012, 12:54:18 AM
Hey Scott,
Same issue on #148.  I simply added another toggle (about 1") between the chainplate ring and the toggle on the turnbuckle... works like a charm.
-Jimbo

Darn these Viper forums. Another $20 solution to a $300 problem. Hows a rigger to make a living ?
Title: Re: Upper Shroud Length/tension issue
Post by: Scott Ellis on May 31, 2012, 09:52:08 AM
Quote from: Jim Sears on May 31, 2012, 12:54:18 AM
Hey Scott,
Same issue on #148.  I simply added another toggle (about 1") between the chainplate ring and the toggle on the turnbuckle... works like a charm.
-Jimbo

Kinda ironic we picked up our boats at the same time and have this same problem.  Thanks for the suggestion Jim, off to the web store :)

Glad to know I wasn't 'doing it wrong'
Title: Re: Upper Shroud Length/tension issue
Post by: Drew Harper on May 31, 2012, 05:39:00 PM
The base shroud length has changed several times from input from various sailmakers, boat owners and Brian Bennett. Rondar UK now has final say those lengths.

The headstay lengths are all over the charts with the various setups. A slight difference in headstay length adds up to a fair difference in shroud length.

An easy fix is like Jim said...just add a link shackle. That way you can change again should you signup with another sailmaker.
Title: Re: Upper Shroud Length/tension issue
Post by: Jim Sears on May 31, 2012, 07:22:04 PM
Here's a photo of the toggle I used:
Title: Re: Upper Shroud Length/tension issue
Post by: Lee Shuckerow on July 04, 2012, 08:29:47 PM
Quote from: Drew Harper on May 31, 2012, 05:39:00 PM
The base shroud length has changed several times from input from various sailmakers, boat owners and Brian Bennett. Rondar UK now has final say those lengths.

The headstay lengths are all over the charts with the various setups. A slight difference in headstay length adds up to a fair difference in shroud length.

An easy fix is like Jim said...just add a link shackle. That way you can change again should you signup with another sailmaker.

Just curious. What are the lengths Rondar is now providing?