Boom clew attachment

[rtz]

I'm still inexperienced enough that I can attach to any of the three settings and not tell a difference.

In what conditions do you attach to the top setting and when do you attach to the lower position?

[swchandler]

The top position will yield a tighter leach, whereas the bottom position yields a looser leach. While many of my sails have a two position clew, my preference has always been the top position. I like having more sail power on tap. Still though, with proper downhaul, I still have enough looseness high up on the leach to exhaust the gusts.

[isobars]

When I asked my sail designer that question, his opening response was a question: "Do you prefer to sail waves/swell luffed or powered up?"

"Hammer down". (It's a preference, and in my case also a medical, thing.)

"Then use the lower grommet. The top grommet tightens the upper sail, moving the COE higher. Moreover, wind/swell interrupts air flow at the surface of the water, also shifting the COE higher because the top of the sail is more exposed to steadier wind. This higher COE adds a pitching (i.e., catapulting) moment most people do not want unless their objective is maximum jump height and duration. Luffing in that environment all but blocks that unwanted pitching effect of higher COE."

[bred2shred]

This one falls into the category of if you can’t tell any difference, then there is none.

Just put it wherever seems most comfortable or makes you happiest or where the Ouija Board says it should go that day. Really, the difference is so subtle as to be non-existant.

sm

[isobars]

COE height can make a dramatic difference. Tuned for big air with a high COE, a Hucker is a lot of work and can bury a sinker's nose. Yet the same sail tuned for normal B&J (i.e. lower COE) demands much less work and sails like any other superior B&J sail. (Sources include personal testing and the guys who designed the Hucker.)

[rtz]

So on a light wind day run it at the top grommet for max power and the lowest one for dealing with higher wind conditions?

[joethewindsufa]

some say - tall guys use top grommet
shorter folks the lower one

you decide

the ONLY time i use bottom grommet is when i know i am overpowered
and do not wanna go in to swap down the sail
perhaps even tighten downhaul then too
if i can - on the water ...

[techno900]

rtz said:

[isobars]

[DanWeiss]

rtz said: