I think I posted a pic before I will have a look otherwise I can again. It is quite simple I will try describe them.
Method 1 is to disconnect the C pulley where it joins the rear main-pigtail and Z main, ie the rear of the mixer. You then connect the C pulley line as a larkshead onto a 8 knot made in the rear main. Like that it can also move connection to the rearmain/zmain join or the rearmain/rearline join so as to quickly adjust length.
Method 2 is to instead disconnect the Z main at the same spot and connect it to a pigtail. The pigtail can larkheads like in the previous method.
The disadvantage of Method 1 is when you adjust the Z length by moving the C pulley connection it also changes the trim. It is also a little hard to adjust the knot in the rear main.
Method 2 is a little less clean if you have a simple pigtail with a knot, but you can do other methods that are cleaner.
Armin Harich wrote:
It is important to measure with 5 Kg load. Otherwise you will set C and B main up to 5mm too long.
The reason is that the sparepartlines are more elastic due to less prestrech to decrease shrinkage while ruling over the pulleys.
cwood wrote:
great back and forth support from FS engineering, they do not recommend Z stretch as they quickly return to the shrunken state after a bit of use.
If for plain mixer test I have never used 5kg, and it has worked fine. 5mm is nothing. Older flysurfers are never correct with a level mixer unless recently restretched though. Restretch does work but doesn't last forever.
If you use 5kg for the long mixer test you will significantly stretch Z out (depending on condition) and that will in turn change your adjustments for B and C. Most likely far more than 5mm more like 20 to 50mm. A lot depends on how the kite is designed to work with shrink. But to measure shrink and so work with it you need to use as low a force as possible, well that is my belief and it seems correct.