So I take a fair few pics of yacht rigging mistakes in my travels so in the SB tradition of generally sharing knowledge while having fun I thought I'd start a pic bases quiz!
Occasionally on this thread I'll post a pic with some words of context and everyone can go at it.
Also encourage others to post pics to!
So first one below.
It's a Farrier Tri with a rotating mast so although it looks like the stays go straight down to the deck, they actually join the mast at gooseneck height.
What's the issue I'm fixing with this rig? A clue is that we have to pull the mast out yo fix

Simple, spreader length and more importantly angles are all wrong if it is a rotating mast.

Simple, spreader length and more importantly angles are all wrong if it is a rotating mast.

Select to expand quote

lydia said..
Simple, spreader length and more importantly angles are all wrong if it is a rotating mast.

Nope. Wouldn't consider either of those to be major issues.
Angle and length enough to create prebend and stay to mast angle is ok too.

picture is the wrong way up.
Top spreader wing looks huge

The diagonal is very strange. Looks to be adjustable via the top spreaders. Have not yet worked out the implications.
It may be a set of strange lazy jack?

Rotating mast hounds (Jesus shackle) for top shrouds and forestay connection.

Will give the answer later today, as no one guessed yet.

A clue, it's to do with the stays

Most rotating rigs have the side stays and the forestay all coming together in a large shackle or crane out the front of the mast. I have sailed on a boat which had something similar to this setup. It was pretty hard to rotate and I didn't like the idea of the Tee balls getting skewed each time the mast twisted.

When the crane is installed there will be extra compression on the front of the mast and more diamond tension will be required.

My two cents

The stays foul the spreader tips

Select to expand quote

Kankama said..
Most rotating rigs have the side stays and the forestay all coming together in a large shackle or crane out the front of the mast. I have sailed on a boat which had something similar to this setup. It was pretty hard to rotate and I didn't like the idea of the Tee balls getting skewed each time the mast twisted.

When the crane is installed there will be extra compression on the front of the mast and more diamond tension will be required.

My two cents

Beat me to it. Not my fault, the dogs demanded we stay in bed and pat them.

You have a line/stay fouled over the aft part of the upper port spreader but I do not see why you have to de-rig to correct it.

Is it a lazy jack that needs to be re-run?

The top spreader doesn't appear to be secured to the stay and could slip. Plus unprotected spreader ends would rip the crap out of the main sail.

Terminals at the ends of the spreaders?

Great idea Rumble! Waiting with bated breath for the answer....

Lots of good guesses but...
The answer is no lateral support at the bottom spreaders.
Customer came to me complaining that the rig moves around alot laterally with the mast head going to windward.
A rig like this should have double diamonds with each spreader being the outside of the diamond.
Answer is remove outside wire tgat connects to the bottom spreader into the mast at the spreader base with a t/ball and rigging screw.

What does it mean when I don't understand the answer?

Select to expand quote

rumblefish said..
Lots of good guesses but...
The answer is no lateral support at the bottom spreaders.
Customer came to me complaining that the rig moves around alot laterally with the mast head going to windward.
A rig like this should have double diamonds with each spreader being the outside of the diamond.
Answer is remove outside wire tgat connects to the bottom spreader into the mast at the spreader base with a t/ball and rigging screw.

Don't understand, please sketch

Select to expand quote

rumblefish said..
Lots of good guesses but...
The answer is no lateral support at the bottom spreaders.
Customer came to me complaining that the rig moves around alot laterally with the mast head going to windward.
A rig like this should have double diamonds with each spreader being the outside of the diamond.
Answer is remove outside wire tgat connects to the bottom spreader into the mast at the spreader base with a t/ball and rigging screw.

Never seen one of these but had thought that something was missing below the lower spreader, but you are saying that the upper support is wrong as well?

Ok, sorry hard to explain.

Should look like the photo here
catamaranconcepts.com/2009/03/27/rigging/
Where each set of spreaders create a diamond but with lateral support at each spreader base created by the top/bottom of the diamond whee the stays join the mast
The pic for the quiz would be like having a double spreader rig mono with no lowers!!

I don't understand - if the lowers joined the mast at the bottom don't they provide lateral support at the lower spreader?

I'd still be interested to know how well the mast rotates with the shrouds connected on the side of the section. I've never seen that on a rotating mast

Select to expand quote

nswsailor said..

rumblefish said..
Lots of good guesses but...
The answer is no lateral support at the bottom spreaders.
Customer came to me complaining that the rig moves around alot laterally with the mast head going to windward.
A rig like this should have double diamonds with each spreader being the outside of the diamond.
Answer is remove outside wire tgat connects to the bottom spreader into the mast at the spreader base with a t/ball and rigging screw.

Never seen one of these but had thought that something was missing below the lower spreader, but you are saying that the upper support is wrong as well?

Runblefish had already said the lower stay already comes back to the mast even though it looks to be going to the deck, a bit of an optical illusion in the photo. Only the top one needs relocating.

Select to expand quote

Jode5 said..

nswsailor said..

rumblefish said..
Lots of good guesses but...
The answer is no lateral support at the bottom spreaders.
Customer came to me complaining that the rig moves around alot laterally with the mast head going to windward.
A rig like this should have double diamonds with each spreader being the outside of the diamond.
Answer is remove outside wire tgat connects to the bottom spreader into the mast at the spreader base with a t/ball and rigging screw.

Never seen one of these but had thought that something was missing below the lower spreader, but you are saying that the upper support is wrong as well?

Runblefish had already said the lower stay already comes back to the mast even though it looks to be going to the deck, a bit of an optical illusion in the photo. Only the top one needs relocating.

Ahh...

Ooh I am not as stupid as I thought. I had the right answer but the discussion was over before I had a chance to answer.

That rig would be really flimsy around the mid section of the mast eh.

But I was also going to say there could be a 3rd diamond stay on the front of the mast? Or would that only apply to single diamond/single spreader rigs?

Select to expand quote

FelixdeCat said..

Ooh I am not as stupid as I thought. I had the right answer but the discussion was over before I had a chance to answer.

That rig would be really flimsy around the mid section of the mast eh.

But I was also going to say there could be a 3rd diamond stay on the front of the mast? Or would that only apply to single diamond/single spreader rigs?

Spot on!
Yes multi hull rigs often have fwd diamonds(or lowers if non rotating, lowers becoming more popular because of less wear on headsails) but rigs like this getg around that with wing sections that are stiff gor/aft and creating a fair bit of prebend to stop rig inverting

Here is the next one.
Backstay (one side of bottom section and pic is of both ends of a 2m section) on a trailer tri.
So many things wrong here, at least 3 structural ones for you guys to try at!

Galv shackles (and maybe problems with different metals touching?), no thimble below the crimp sleeve, and rusted eye bolt?

I must be missing something. Looks like the eye bolt is on the wrong side of the turnbuckle to me.

Select to expand quote

shaggybaxter said..
I must be missing something. Looks like the eye bolt is on the wrong side of the turnbuckle to me.

Sorry should of said, that's from s previous galv turnbuckle has nothing to do with the issues here

Select to expand quote

All@Sea said..
Galv shackles (and maybe problems with different metals touching?), no thimble below the crimp sleeve, and rusted eye bolt?

No thimble is one, galv shackle.....sort of.....what sort aren't they?

Select to expand quote

rumblefish said..
Here is the next one.
Backstay (one side of bottom section and pic is of both ends of a 2m section) on a trailer tri.
So many things wrong here, at least 3 structural ones for you guys to try at!

Given the state of this piece of rigging and the boat that it is from it is probably entirely appropriate that it be left as is without interference.