Sta-lok and toggles

[seawolf]

Brion,
Thanks for the additional comments.
Since I have bought the turnbuckles with toggles on both ends, I will go ahead and use them even though it maybe redundant.

I am now working on how to compute the constructional and working elasticity for my new wire. I was looking at your examples in The Rigger's Apprentice. I do not have a scientific calculator, and pretty poor at math,, and I was wondering if there is a table for different lengths and diameters of 1X19 SS wire for this computation.

I have tried some interpolation and must admit it is pretty random, but using the example in the book as a starting point with 50' 5/16 1X19 SS tuned to a working load of 25%, showing a working stretch of 1.5 inches and about 5/32 of an inch for construcitonal stretch.
For my uppers that are 7/32 1x19 SS around 32 feet in length, I would think that the constructional stretch would be nominal, possibly 1/16 of an inch and if given around 3/4 of an inch for working elasticity I should be in the ball park?

Again this is just my throwing out some interpolation than that of actually crunching numbers. I just don't want to guess to much stretch and end up with to short of a wire.

With lowers of 1/4 inch 1X19 SS of only around 15 feet, would it be possible to omit any stretch calculations all together?
Thanks for all the great advise.
Fair Winds.