That will be really interesting. I will also need a design for our Blades, as will another homebuilder I know. Perhaps we should have a look at making an open source Blade jib design?

sounds good to me. I would be happy to help. There is double sided tape out there that could be used on the seams for the jib on the F16 that would require only maybe one row of straight stitching. This would enable people with small machines to sew them except for a few small spots I would guess. The spin I got from Glaser doesnt have stitching except on the tapes and patches. Somebody please correct me but I don't see these jibs taking a huge load given their size.

The glues are mostly intended for laminate sails as far as I know. For Dacron the sewing machine still will have to run over the seams.
We built a Tornado main out of Maxx Pen09 and glued the seams. We also stitched the seams, but I dont think that was neccesary.

Here is a first go at a jib, just to let you (and others who are interested) have a look at the mid section profile.



Could you measure luff, leech and foot length of your current jib? Also, could you fold the sail and measure luff curve for both position and amount? By folding I mean that you fold the luff back over the cloth once, and then fold the luff forward again so you can measure hollow against the straight fold of cloth you have got. If your jib is in a stiff laminate cloth, this might be hard and using a straightedge or a plank might be easier.

A word of warning, you would be sailing with the prototype as we are not ready to do the sails yet!! Perhaps better for you to wait until we have launched and done a couple if iterations of the design.

Software used is SailCut, which is available here: http://sourceforge.net/project/downloadi...xe&78816830

If you want to play with the datafile, I can post it as an attachment here.

would love to measure my jib. only problem is that it is 1000 miles away, I am in michigan and the sail is in Fl. I will see about having someone measure it for me....