Halyard wrap ~ best solution Selden fractional rig?

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StevieD

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I has to change headsail 3 weeks ago due to uv damage on the furled headsail on a new to me boat, and have had issues ever since with halyard wrap. I've experimented with 2 headsails that predate the current rig, but are in good condition, and with forestay, halyard and back stay tension all without any major success.

It's on a recent selden mast and 200 series furlex rolling reefing system on a fractional rigged Beneteau 35s5.

Is a plain old diveter fairlead or a donut or wheel the best practise with least installation hassle until the end of the season?

Thanks
 
It sounds to me more like a problem with the 'halyard swivel' I'm guessing you have had a really good look at this, but it may just be that when its under tension it isn't turning freely?
I have never been a great fan of 'least installation hassle' so not sure if the options you are wondering about will suit for the rest if the season.
 
You need a halyard diverter.

Added explanation - the halliard in your photo is almost parallel to the stay. In that case, it can't stop the top swivel from rotating, resulting in a halliard wrap. A diverter will change the angel of the halliard with respect to the stay so that tension in the halliard will stop the top swivel from rotating.
 
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Praxinoscope said:
It sounds to me more like a problem with the 'halyard swivel' I'm guessing you have had a really good look at this, but it may just be that when its under tension it isn't turning freely?
I have never been a great fan of 'least installation hassle' so not sure if the options you are wondering about will suit for the rest if the season.
Click to expand...
Yes potentially, but it is fairly fresh with not much play in the bearings, I'm waiting on silicon waterproof grease to arrive to lube both top and bottom up before trying again. Yes it's only when under tension that I have problems - If i've someone up the mast helping it, no problem, but that in itself is problematic :rolleyes:

The 'least installation hassle' refers to not having to take the rig down!
 
I'm guessing that the new/replacement genoa has a slightly shorter luff than the previous genoa, so the upper swivel now does not go as far up as it used to.

Quickest solution would be to use a short strop between the head of the sail and the upper swivel, just long enough to allow that swivel to have better halyard angle to the sheave.

It looks like just a few inches in length would be enough...
 
Martin_J said:
I'm guessing that the new/replacement genoa has a slightly shorter luff than the previous genoa, so the upper swivel now does not go as far up as it used to.

Quickest solution would be to use a short strop between the head of the sail and the upper swivel, just long enough to allow that swivel to have better halyard angle to the sheave.

It looks like just a few inches in length would be enough...
Click to expand...
Beaten to it. Quick test would be to add a strop at the bottom. if this sorts it out put it at the top so as not to affect sheeting angles.
 
Lower the sail & you could fit a disc above the top rotating section. The furler manufacturer should be able to supply one. But the best option is to pop rivet a wheel halyard aligner to the mast & be done with the hassle. You have mentioned going up the mast, so presumably that is not an issue. Just do it.
The strop at the top may solve the problem, but not always as it does not have the sail immediately below to make the furler rotate correctly
 
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Martin_J said:
I'm guessing that the new/replacement genoa has a slightly shorter luff than the previous genoa, so the upper swivel now does not go as far up as it used to.

Quickest solution would be to use a short strop between the head of the sail and the upper swivel, just long enough to allow that swivel to have better halyard angle to the sheave.

It looks like just a few inches in length would be enough...
Click to expand...
Yes by 2-3" I believe, I'd have to get the two side by side to be 100% sure, but a previous photo does shoe the top swivel further up the foil - I'll give the strop option a try to test the theory thank you!
 

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Daydream believer said:
Lower the sail & you could fit a disc above the top rotating section. The furler manufacturer should be able to supply one. But the best option is to pop rivet a wheel halyard aligner to the mast & be done with the hassle. You have mentioned going up the mast, so presumably that is not an issue. Just do it.
The strop at the top may solve the problem, but not always as it does not have the sail immediately below to make the furler rotate correctly
Click to expand...
If the strop works then yes I'll get a diverter sorted and fitted. Thanks
 
AntarcticPilot said:
You need a halyard diverter.

Added explanation - the halliard in your photo is almost parallel to the stay. In that case, it can't stop the top swivel from rotating, resulting in a halliard wrap. A diverter will change the angel of the halliard with respect to the stay so that tension in the halliard will stop the top swivel from rotating.
Click to expand...
Thanks AP that puts the logic into perspective - the longer luff on the damaged sail would have allowed the desired 10 deg angle to be achieved and prevent wrap!
 
With everything working perfectly, the swivel lubricated and the halyard tension taken off, the current arrangement might just work, but it really needs correcting as suggested.
 
I'm not sure if there is sufficient room but it may be that a 'deflecter' might be worth investigating.
Have a look at the Cox engineering page on the subject of halyard wrap.
 
I had a similar problem that only occured after a wild night at sea. Greasing the swivels helped,as did reducing luff tension. However I fitted as suggested a diverter to change the halyard to the recommended angle.

Steveeasy
 
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