Halyard chafes on tuff luff

[Mogle]

You could use a small velcro strap wrapped around headstay to keep tack from floating away or the head pennant.

This is a good advice.

Looking at the picture you would like the sail close to the forestay as possible. A simple way would be a strap of some sort wrapped around head stay. Taking in the halyard too hard will generate other issues.

 

[Merit 25]

I'm still confused by how the halyard is chafing on the tuffluff. they should be inline, or at least pointed away from each other. do you really mean chafed on the sheave/sheave box?

-M

Nope, the sheave box looks like this

Forestay connection is the tang that sticks out front. Not hard to visualize a plastic extrusion (razor) flapping in the breeze 1" behind it coming in contact with the halyard. The halyard exits high b/c you're supposed to use just two halyards on the boat, but I'm in the process of adding a 3rd (dedicated spin halyard).

The velcro would work, but that's one more step for the bowman and additional time plowing through the chop.

 

[bluelaser]

Have the sailmaker add the pennant as part of the sail(at the head). That's how the #3 was set up on the 1D35 - had about 6' of luff tape above the last of the laminated sailcloth, with essentially spectra webbing sewn in to hold the load. This made the sail hoist just like the bigger jibs, but only with the area of the short luff sail.

Sure there may be other ways to do it but this is always on the sail, ready to go, and as a bowman it never caused issues.

 

[OBW]

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[bluelaser]

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Yep. Except ours is all one piece with the main luff tape.

 

[mrgnstrn]

understand the problem now...

rigging tape. lots of it.

-M

 

[xyzzy]

The sail pulls out of the foil with the pennant at the tack from the foot tension. It's not the pennant pulling the tape out, but the sheet load along the foot. That load should go into the tack fitting not the foil. The pennant doesn't take up the outward foot load nearly as much as the tack fitting.

With just a pennant at the head you get some of the same problem. If the tape is going to peel out it will start at one of the ends. So you don't want a lot of force pulling out on the tape at either the bottom or the top. With head up at the halyard sheave the halyard takes up a lot of the force pulling the tape out. The longer the length of halyard (or halyard + pennant) to the head of the sail the less of the outward force the halyard takes. If you have a #4 that's several feet short it makes a difference. This is why the pennant should have continuation of the tape on it. So the end of the tape is at the top of the foil.

 

[USA 236]

The #1 is no issue, the halyards always at the top when hoisted. The 3 doesn't hoist all the way to the top, so the halyard chafes on the tuff luff about 10" up from the shackle. How can I fix this?

Put the pennant at the head of the sail. This will also mitigate the risk of pulling the foil out of the tuff luff at the head.

 

[equivocator]

I think the halyard is probably chafing on the top of the TF.

And I think your Tuff Luff is too long; aren't they are supposed to be installed with a short length (4" - 6") of plastic tubing at the top to prevent the device from hitting the mast and/or fittings at the top of the stay? And isn't the "groove part" supposed to be cut away at a 45 degree angle at the top of the TL? The TL doesn't need to extend higher than the top of the luff tape on the #1 when the sail is fully hoisted. You are correct about the tack - any extension allows the tack to move aft when the sail is sheeted in, which puts tension on the feeder and can cause the luff tape to tear or break the foil. And it affects the shape of the sail, too.

 

[Bump-n-Grind]

based on this discussion, I also think your foil might be cut too long. Not sure how easy it is to pop the headstay off the boat, but you might try:

a. hotknifing some of the material off the trailing edge of the foil forming a taper back to the headstay..

( actually this probably wont work because isn't there another little stainless fitting up there?}

b. just whacking a few inches off the top (or the bottom )

c. pennant.

how much shorter is your #3 than the #1?

 

[Merit 25]

Difference is only about 8-10". I think I'll try trimming the TL back at an angle to remove the 'corner'. If there's still chafe then I'll add the pennant. Pretty easy to remove the TL on a 25 footer.

 

[Bruce T. Shark]

Pennant on the head of the sail, or have your sailmaker extend the head patch and luff tape up that extra 10 inches, which is just a fancier way of makeing a pennant.

+100 why do you want to race the Center of Effort on a sail HIGHER and INDUCE MORE HEEL? Either add a line between the REGULAR halyard and the head of the sail or extend the sail /luff tape up the extra/desired amount..

 

[Mr. Fixit's brother Mr. Fixit]

Dude don't go cutting your tuff-luff. You can't put it back! Just try a pennant using a piece of line and see how well it works. Sheesh it's been a month. :blink:

 

[Haligonian Winterr]

With some simple slices, you can make a pennant for ~6$ worth of any Dyneema product.

Plus if you don't like it, it's 6$ worth of rope...

HW

 

[equivocator]

Try putting 4"-6" of tubing at the TOP of the TL to keep it away from the top of the stay. Split the tubing lengthwise, put on stay and then tape it top and bottom to keep it in place. If the foil is too long, relocate the bottom spacer. The top spacer should prevent any further chafe. Make certain the luff tape does not extend above the top of the foil when the #1 jib is fully hoisted. Should resolve your problem without any changes to other headsails. If you have the SS top protector, you might not want to cut away the top of the foil.

Another alternative: hoist the #3 on a calm day. Be certain the backstay(s) and halyard are in the 'fighting' positions. Then go up the mast and see what the halyard is chafing on.

Here are install directions for a Headfoil 2: http://www.headfoil.com/headfo1.pdf

 

[deckersr]

Nope, the sheave box looks like this

Forestay connection is the tang that sticks out front. Not hard to visualize a plastic extrusion (razor) flapping in the breeze 1" behind it coming in contact with the halyard. The halyard exits high b/c you're supposed to use just two halyards on the boat, but I'm in the process of adding a 3rd (dedicated spin halyard).

The velcro would work, but that's one more step for the bowman and additional time plowing through the chop.

If the extrusion is 1 inch from the halyard, it sounds like you are missing the 4" spacer in the instructions below. The spacer should not effect the hoist of your #1 if the luff tape on it is installed anything like the attached pictures ie a couple of inches of head extending above the top of the luff tape. When the jib is hoisted, the halyard will be above the top of the tuff luff. When adding the spacer you do not want the luff tape to extend beyond the top of the tuff luff.

If your smaller jibs are less then full hoist you will still want to add a pennant and possibly a luff tape extension as others have mentioned so that the halyard hoist is always above the top of the tuff luff for all of your sails.

Try putting 4"-6" of tubing at the TOP of the TL to keep it away from the top of the stay. Split the tubing lengthwise, put on stay and then tape it top and bottom to keep it in place. If the foil is too long, relocate the bottom spacer. The top spacer should prevent any further chafe. Make certain the luff tape does not extend above the top of the foil when the #1 jib is fully hoisted. Should resolve your problem without any changes to other headsails. If you have the SS top protector, you might not want to cut away the top of the foil.

Another alternative: hoist the #3 on a calm day. Be certain the backstay(s) and halyard are in the 'fighting' positions. Then go up the mast and see what the halyard is chafing on.

Here are install directions for a Headfoil 2: http://www.headfoil.com/headfo1.pdf