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Mozzy Sails

Jib sheeting angle; how do you adjust yours?

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A taller angle pulls more tension in to the leech = fuller sail for the same leech profile = less twist

A slacker angle pulls more tension in to the foot = flatter sail for the same leech tension = more twist

On boats with self tacking jibs where rig tension is held by the forestay this sheeting angle can be adjusted in a few ways. 

- moving sheet attachment up and down on clew board

- moving tack attachment up and down on bow (not allowed on 29er)

- raking the rig back (sheeting angle stays the same, but instead sail rotates back and forward to same effect) (not really possible on the 49er and 29er with fixed length forestays, but the 800 this is possible)

What are the pros and cons to each method? 29ers you have no other option than to change clew board, but in 49ers and RS800s the accepted method seems to leave the clew board in neutral setting and adjust the tack height. Why is this? 

 

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Adjusting the tack line down also helps flatten out the luff of the sail, on the 29er you would need to crank on jib halyard and change the clew board to have the same effect as simply shortening the tack line on the 49er or RS800. 

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