Plastimo furler on Squib - halyard diverter problem - anyone else?

[Kukri]

Son has a Squib. We fitted a Plastimo furler two years ago. The halyard tended to wrap so we fitted a white plastic diverter disc.

This morning the forestay broke. Luckily no other damage and we got a bit of Dyneema bowlined onto the jib halyard to hold the mast up for now.

Break looks like this:



We suspect the jib halyard diverter.

Any thoughts?

 

[Laminar Flow]

We have a Plastimo and I fitted the doughnut diverter/roller at the top right from the start. Never had a problem. Being cheap I made my own as well.
If, as I understand your diverter was retro fit to resolve a recurring problem, the damage to the stay, even if not visible, might have already been done.
In retrospect, I think the doughnut solution is a bit hokey and I would now fit a fairlead onto the mast itself to keep the halyard out of harm's way.

 

[Greenheart]

I can't quite visualise how the diverter was positioned such that in use, it could have so weakened steel wire.

Is it possible to see from the remainder of the forestay, whether the damage occurred exactly where the divider made contact?

Perhaps a divider which could spin on a central bearing, would serve its function without imitating a grinding wheel in use.

I may be entirely misunderstanding the question.

 

[Kukri]

The diverter was a white plastic disc which was free to rotate and to slide up and down on the forestay and which sat at the top of the foil.

There was a “ping!” and the diverter flew into the Orwell, followed by the rigging going slack as the mast was now held up by nothing forward of the shrouds, whilst the remains of the forestay slithered down inside the foil.

 

[Greenheart]

Maybe all the answers are here?

Halyard wraps

This photo from that page, looked like a similar situation to yours...

Possibly Vyv Cox will have replied here, before I can post this reply. ?

 

[Kukri]

Maybe all the answers are here?

Halyard wraps

This photo from that page, looked like a similar situation to yours...

Possibly Vyv Cox will have replied here, before I can post this reply. ?

Thanks. I see that what I have been calling a diverter ought to be called a deflector.

 

[VicS]

The diverter was a white plastic disc which was free to rotate and to slide up and down on the forestay and which sat at the top of the foil.

There was a “ping!” and the diverter flew into the Orwell, followed by the rigging going slack as the mast was now held up by nothing forward of the shrouds, whilst the remains of the forestay slithered down inside the foil.

If you can, fit the fairlead type of diverted rather than another wheel.
Two sizes ,. I quess the smaller size will be the appropriate one.

The angle between the halyard and the forestay should be 10 degrees

 

[Kukri]

fitted an “auxiliary halyard” - a solution proposed to me by Nigel (“Refueler”), who has used it for years, and recommended by DRS Rigging (Keelboat rigging specialists in Southminster who made the replacement forestay in thirty minutes whilst passing on a lot of good advice about Squibs, Dragons and much more.

This allows the main load to come on the existing sheave, with the angled secondary halyard stopping the swivel from rotating. You do have to be careful to keep tension on both halyards when hoisting.