35' would definitely be way too short for a symmetrical (I assume that's what he meant by "traditional") kite on a 30' boat. 40' would be marginal, IMO. On a close reach the guy will come from forward of the bow, back to a turning block at the stern, then forward to winch and cleat. 45' would be the minimum, I would think.I would swag 2 35-40' sheets.
Yes, I meant symmetrical. Probably should have said that, but it was late and my mind was apparently not in full gear. Thanks everyone, I'll get some 60 foot sheets.35' would definitely be way too short for a symmetrical (I assume that's what he meant by "traditional") kite on a 30' boat.
A good light air spinnaker sheet is NE Ropes flight line, because its light, strong and if it goes in the water it won't soak it up. But, if you use it on a heavy air day, it will melt on the winch.I should probably have said 35-40' minimum! per sheet.
Also, being as you are going to race, many folks will have 1/4-5/16" for windy days, and a higher strength 1/8" for light wind days! Then there will be clips on the sail ends for quick change outs if the wind pipes up or down!
At $0.92 per foot, its going to add up pretty quick. Can the Samson line be used in heavy air as well, or does it have the same issue that the flight line would have?Use of high performance line as spin sheets and guys really pays off. It will not be uncommon for the distance between the clew and the winch to 45'. If a gust of wind were to cause the sheet to stretch 4% that means 22" of stretch. Wouldn't you rather have the force of the wind pushing your boat forward rather than just stretching a sheet?
Using stretchy lines for guys is even worse. High tech lines will help you avoid having the pole hitting the forestay everytime you have a puff while on a close reach.
On your size boat 5/16" Samson Ultralite should do the trick. Don't go any smaller; your crew won't be able to handle thinner sheets.
That's a cool idea, thanks.If you get serious, and haven't bought the sheets yet, get 2 different sizes. Then cut them in 1/2 and splice the 2 sizes together. So you have a 5/16 going to a 1/4, then strip the cover of the 1/4" half way to the clew or more.
Many ways to do it, but one set of sheets should handle heavy and light winds for at least 3-4 years. Amsteel is easy to work with and even their 7/64" line has a min. strength of 1400lbs. 100' of that stuff only weighs 3 tenths of a pound. Keep them light. Only use a larger diameter where the trimmers hold it, Like the last 10-15' of it.