Henry: details on the size of a headsail - http://www.jasperandbailey.com/tech/headsails.html -- :: Dave Scobie :: former M15 owner - www.freewebs.com/m15-named-scred :: M17 #375 SWEET PEA - www.m17-375.webs.com :: Sage 17 #1 AIR BORN - www.sagemarine.com On Mon, Aug 3, 2015 at 9:58 PM, Henry Rodriguez <heinzir@gmail.com> wrote:
Thanks Tom, Larry, Tyler, Keith, and all who responded to my question about drifters. I would like to get one before this season ends. I'm curious about what the actual measurements are for your existing drifters and what the relative sizes (150%, 170%, etc) are?
A related question for you experts out there (that includes everyone but me): Does the % size of a genoa or jib refer to the ratio of the LP to the boat's J measurement or does it refer to the ratio of the sail's area to the 100% fore triangle? I've seen several sailmakers' sites that define it as a function of the J measurement, which is 6.58 ft according to Sailrite's data base. This makes sense to me when talking about overlapping genoas but what about smaller jibs? You could have a number of different sails with the same LP measurement but that vary greatly in luff length. Their areas would be quite different but they would have the same LP percentage. Take a storm jib sized sail versus a blade jib; they theoretically could have the same LP measurement but there would be a great difference in their total square footage.
Someone set me straight, please!-- Henry https://picasaweb.google.com/heinzir