IDENTIFY - "Z" Logo on Standing Rigging Turnbuckle

[FlaviusC]

Originally Posted by Bowdrie

Jedi is 100% correct, NO closed-body turnbuckles, not now, not ever.
Closed bodies are cheap, easily made on a lathe from bar stock, whereas the open bodies are started from a forging, (better be bronze).
The old response was that with a closed body you never really knew how much thread was left inside.
While that is true, the main reason to never use them is that they hold water internally on the lower half.
The water evaporates, leaves the salt, and the thread interface is being constantly attacked by a high concentrate chloride environment, (one of the worst environments for stainless).
For longevity and peace-of-mind only open body turnbuckles of forged bronze should ever be used.
Sorry Swan, you should know better.
And all-stainless turnbuckles? best used as fishing sinkers.

Thanks for the perspective.

[Franziska]

Originally Posted by FlaviusC

Hi Franziska,



Thanks for the suggestion. I did find Z-pars UK online and also the French Z-Spars, but it does not look at first glance that either makes turnbuckles.



I actually want to replace those turnbuckle bodies with closed ones, but I first wanted the specs on the old ones. Especially the threads.



I've determined the thread size/pitch on one turnbuckle, but another one still doesn't seem to match standard metric thread size/pitch.



Cheers

I'd call them anyway, not sure they did not make some in the past or had someone make them for them.

[FlaviusC]

Originally Posted by Franziska

I'd call them anyway, not sure they did not make some in the past or had someone make them for them.

I will do that. More knowledge is always better.

[GordMay]

Originally Posted by FlaviusC

... More knowledge is always better.

They always say knowledge is power.
But, I'm pretty certain; I could have beat up Stephen Hawking.

My poor knowledge of Greek mythology...
... has always been my Achilles' elbow.

[Searles]

Have seen a alu mast here in oz ,badged ZAP spars maybe an Australian brand,although the yacht wes American,.⚓️⛵️

[5BTM]

If all you need to know is the tread size and count get something like that:

https://www.swmanufacturing.com/part...hread-checker/

[FlaviusC]

Originally Posted by 5BTM

If all you need to know is the tread size and count get something like that:

https://www.swmanufacturing.com/part...hread-checker/

Thanks! That's a fun product!

All I really need is the thread size.

Of the two sizes of turnbuckles, one turned out to be M12x1.25 per my calipers and my local hardware store bolt.

The second, I measured with calipers at 18.8mm (.73in) wide and pitch 6/cm (15/inch), which on paper, could be either M18x1.5 or .75in-16. Hard to tell without original specs or the thread measuring tool you suggested, since local hardware/marine store don't carry sizes that large.

Logically, the fact that the boat was built in France, and the first turnbuckle is metric suggests the second one is metric also... so M18x1.5....

Cheers!

[s/v Jedi]

Originally Posted by FlaviusC

Thanks! That's a fun product!

All I really need is the thread size.

Of the two sizes of turnbuckles, one turned out to be M12x1.25 per my calipers and my local hardware store bolt.

The second, I measured with calipers at 18.8mm (.73in) wide and pitch 6/cm (15/inch), which on paper, could be either M18x1.5 or .75in-16. Hard to tell without original specs or the thread measuring tool you suggested, since local hardware/marine store don't carry sizes that large.

Logically, the fact that the boat was built in France, and the first turnbuckle is metric suggests the second one is metric also... so M18x1.5....

Cheers!

No, it will be 3/4” because M18 can’t be 18.8mm afaik

[argonauta1]

US Spar handles all Z Spar stuff in the US

US Spars Inc.
6320 NW 123rd Place
Gainesville, FL 32653

386-462-3760
800-928-0786

Web: https://www.usspars.com/contact/

[CaptainRivet]

Originally Posted by argonauta1

US Spar handles all Z Spar stuff in the US

US Spars Inc.
6320 NW 123rd Place
Gainesville, FL 32653

386-462-3760
800-928-0786

Web: https://www.usspars.com/contact/

already wrote them twice, no answer...
Zspar the standing rig original all threads are UNF american norm also on french build boats.
I have a FP Lavezzi which has Zspar as original standing rig too, threads of turnbuckle are 3/4" on 12mm wire and 10mm wire is 1/2"

[argonauta1]

Seems strange. I communicated with them and had very positive results. Maybe try using the phone. Anyway, these are the guys to contact. Good luck.

[Bowdrie]

Originally Posted by argonauta1

Maybe try using the phone.

You mean like actually using your voice to talk to someone?
How quaint.