Zmod. you may have missed it ,ignore the controversial title viewtopic.php?f=197&t=2392205
To sum up the Z mod. It is merely a simple added adjustment (knot) to help the mixer correctly compensate for change in the A and Z main and the C SPL. To apply it correctly it requires some measurements and calculations. Hopefully the excel sheet and pictures can help you understand. I did feel I got a bit too complicated over the whole thing, so if you want to ask more questions like everyone else go ahead.
I have actually been thinking quite a bit about the mixer and what is the best way to adjust it. I am settling on the need for 3 adjustments. Currently I am liking these three--C main length , Z main position and C SPL stopper knot. But I have also thought about B SPL length, C SPL stopper knot and Z main position. There is no way 2 adjustments are sufficient, I have thought long about that, sad I know. The flysurfer method(2 adjustments) actually caused me a great confusion for a long time, doubly sad I know
one adjustment which flysurfer doesn't use and is actually more powerful and simple and strait forward is to play with the Z length or it's position ( the effective length). A change at Z is the same as changing C 1/2 and B 1/4. It's like a 2 for 1.
Yes I am aware of the Osborne effect. What happened with the old speed 4 is a bit different though as it just got pulled from the market. Flysurfer has a number of problems though. By not having a product on market they have allowed their competitors to gain, be that with foils or inflatables. Now you have plenty of old time flysurfer riders on inflatables, there is no flysurfer wave or freestyle/freeride foil kite. And you have a brand like pansh catching up and maybe even exceeding flysurfer with a kite like the A15. So I wonder who would buy a mid AR kite if flysurfer was to release one? How much effort would have it cost to scale the existing old speed4 designs? or even tweak the pyscho4? Maybe it is not flysurfer philosophy to release kites before they are 100% happy but that doesn't seem normal in the industry. Maybe they need to look at starting their own factory somewhere so they can abandon serial production and it's problems. Start offering modern on demand with a focus on quality like Switch seems to do.