Here are some pictures of a professionals attempt at a spi for a fast beachcat.
I know what I think about it, but would like to hear opinions. Pictures are not the best, but it gives you an idea of how it would look when flying.
Rolf,
Did they give any idea of the "slack" in the luff when sailing.
While looking at my new kite I was very surprised at the amount of slack John was planning to put into the luff. Landy said 10% and after some faffing around waiting for some breeze (only about an hour) we finally proved that this was about right. AND, it looks very much like those pictures - we did not have time to take any as the wind was all over the place (direction and strength) and so we had to be carefull putting sails up in the yard. One un-intensional hull fly on land was more than enough to get the sails down !!!
Pulling the Luff tight gave a very full front 15% and looked V slow....
