Put the mast back up and cant tighten that one sidestay

[alahol2]

How about trying the turnbuckle from the opposite side of the boat? That should settle the size question and maybe identify if the problem is in the male or female parts.

 

[DangerousPirate]

Sorry but I'm still not clear where your problem is. The turnbuckle or bottle screw is in the middle bit with a threaded fitting coming up from the deck and also a threaded end on the shroud. Are the bottle screws, both old and new, refusing to screw properly on to the deck fitting? Or the shroud fitting? Or both? Have you tried just screwing the bottle screw into the deck fitting without the shroud itself?

When I got galling on a stainless rigging screw it proved impossible to undo it even with an enormous Stilson on the bench. The symptoms you describe are typical of the wrong thread eg imperial instead of metric but how can that be if you are getting the issue on the old bottle screw you took off when the mast came down as well as the new one? Or it could be a bent male thread but on both the deck fitting and the shroud - that is highly unlikely but not impossible.

Sorry if I wasnt clear. I have a problem screwing the turnbuckle in, it strikes at both ends. The deck fittings and the shroud fitting, for whatever reason. I know because I tried it separately. I tried the old turnbuckle and the brand new one.

Metric vs imperial is a good point I havent considered before, yet the other turnbuckle, which I replaced on the port side, fits with the metric units.

How about trying the turnbuckle from the opposite side of the boat? That should settle the size question and maybe identify if the problem is in the male or female parts.

Well, that certainly is a smart idea Ill try tomorrow. Thats simple yet no one thought of it.

 

[Pagetslady]

Nobody has mentioned that one thread is left handed could that have anything to do with it, is it possible the swaged end is not right.

 

[cherod]

If it's not the bit you have changed, then it must be the bit you haven't changed, I would have thought.

 

[DangerousPirate]

Okay, so I tried the turnbuckle from the port side, but that didnt work. So its definitely not turnbuckles fault, and I ordered a different size now. Its supposed to be an m8 atleast thats what the port one is, but I tried the m10(which is the next size) but obviously its too big and didnt grip. I would like to try an m9 but theyre expensive for some reason. You get m8s for 2-5 quid, you get m10s for 3-5 quid but m9s are 15 quid for some reason.

Guess Ill just have someone make me a new wire next and install it.

 

[davidej]

Some metric and imperial threads are so close that it is easy to mix them up. You only notice when the nut gets stuck half way on.

Are you absolutely certain???

 

[penberth3]

Okay, so I tried the turnbuckle from the port side, but that didnt work. So its definitely not turnbuckles fault, and I ordered a different size now. Its supposed to be an m8 atleast thats what the port one is, but I tried the m10(which is the next size) but obviously its too big and didnt grip. I would like to try an m9 but theyre expensive for some reason. You get m8s for 2-5 quid, you get m10s for 3-5 quid but m9s are 15 quid for some reason.

Guess Ill just have someone make me a new wire next and install it.

M9 is a non-standard size, that's why it's more expensive. Have you identified the threads yet? I'd do that before I spent more money.

 

[Bilgediver]

Hm. I give that a try before I replace the cable. (I dont think I can just replace the screw, can I?)

Any chance you have mixed components from two different rigging screws . As others have mentioned a touch of grease can help to prevent galling.

 

[roaringgirl]

Any chance you have mixed components from two different rigging screws . As others have mentioned a touch of grease can help to prevent galling.

1. Confirm the thread diameter and pitch on the shroud (you have done this with a nut, I think), run the nuts all the way up the thread to check for thread damage.
2. Confirm the thread diameter and pitch of the chainplate fitting using a nut
NB. One of the above will require a reverse thread nut
3. Confirm the thread diameter and pitch of both ends of the bottlescrew, noting that you'll need a reverse thread bolt for one end
4. Confirm that the nuts you used to check fit on the bolts you used to check
5. Make sure the bottlescrew is the right way up.

 

[[159032]]

Different threads. There seems to be some confusion going on.

It may be helpful if the OP could tell us what yacht we are discussing. Is it a 50 blue-water boat or a 15' Pirate?
I get the feeling from the previous post about a roller reefing boom it's more like the latter.

Take the mast down and take the shroud to the chandlers to get a bottlescrew that fits it.

 

[SaltIre]

Different threads. There seems to be some confusion going on.

Are there two turnbuckle thread threads?

 

[penberth3]

Are there two turnbuckle thread threads?

I don't know which way to turn.

 

[rogerthebodger]

I don't know which way to turn.

In, out, in, out, shake it all about.