Carbon boom protection from reefing lines

[flaming]

Awesome, thanks!

 

[orangemikey]

I have seen versions similar to what's shown in Laser310's picture although usually more triangular shaped to spread load over a larger area.
Called a reef nappy or diaper.
Even mentioned on North's website although no images: Slab Reefing Systems & Tips For Reefing

 

[Fr J Hackett]

What about PPF as used on cars

 

[benjenbav]

What about running a continuous dyneema line between tack and clew and anchoring your reefing lines to that on either side?

This would avoid any friction on the boom.

 

[flaming]

What about running a continuous dyneema line between tack and clew and anchoring your reefing lines to that on either side?

This would avoid any friction on the boom.

The tension that would have to be under to keep it close to the boom would be scary!

 

[benjenbav]

The tension that would have to be under to keep it close to the boom would be scary!

Really? Shear loading should not be an issue and don’t forget that the reefing points are only attached to the sail and will experience the same shear load.

If you are concerned about the deflection of the line I would not see that as a huge issue, given that the axial load strength of dyneema is its usp.

I would suggest attaching to the fixings to which the tack and clew are attached rather than to the tack and clew themselves. I only mentioned tack and clew in my previous as a shorthand bcs I was in a rush.

 

[dunedin]

What about running a continuous dyneema line between tack and clew and anchoring your reefing lines to that on either side?

This would avoid any friction on the boom.

The straps to spread the load look to be the ideal answer, job done

 

[flaming]

Really? Shear loading should not be an issue and don’t forget that the reefing points are only attached to the sail and will experience the same shear load.

If you are concerned about the deflection of the line I would not see that as a huge issue, given that the axial load strength of dyneema is its usp.

I would suggest attaching to the fixings to which the tack and clew are attached rather than to the tack and clew themselves. I only mentioned tack and clew in my previous as a shorthand bcs I was in a rush.

The deflection is a massive issue. If you are looking to actually control the position of the clew, then the amount of deflection you would want from the boom would be zero. To get anywhere close to that when you have the full load of a reffing pennant at 90 degrees to that, the tension in the dynema line along the boom would have to be extreme.

As to the "fixing that the clew is attached"... I think you're very much thinking of a cruising setup... There is no such thing here, we have a velcro strap (which I hate, and is the subject of another cunning plan of mine) and an outhaul.

 

[benjenbav]

The deflection is a massive issue. If you are looking to actually control the position of the clew, then the amount of deflection you would want from the boom would be zero. To get anywhere close to that when you have the full load of a reffing pennant at 90 degrees to that, the tension in the dynema line along the boom would have to be extreme.

As to the "fixing that the clew is attached"... I think you're very much thinking of a cruising setup... There is no such thing here, we have a velcro strap (which I hate, and is the subject of another cunning plan of mine) and an outhaul.

The outhaul was the fixing I was trying to name.

Fair enough, re the general idea.