SailNet Community - View Single Post - Jib pattern: miter or crosscut?
View Single Post
post #6 of Old 02-21-2008
Jeff_H's Avatar
Join Date: Feb 2000
Location: Annapolis, Md
Posts: 7,418
Thanks: 11
Thanked 235 Times in 186 Posts
Rep Power: 10
Triradial makes little sense on a sail as small as a SJ-21 working jib especially when working with woven polyester fabrics. While tri-radial cutting makes a lot theoretical sense, the reality is that much harder to get the fiber orientation, stitch tension and broad seaming sufficiently accurate that a small triradial sail ends up with a better flying shape than a simple broad seamed cross cut sail. I personally spent the money to go to the tri-radial route on a small high aspect ratio jib, and ultimately went back to a broad seamed jib to replace it for performance reasons.

Beyond that, tri-radial sails produce a lot more fabric waste, require a lot more skill to build well, and are far more labor intensive to build. Now then if you want a real improvement in performance I would consider adding a full length head batten and slighlt over length lower battens, then building the sail with nuetral or even positive roach.

Jeff_H is offline  
Quote Share with Facebook
For the best viewing experience please update your browser to Google Chrome