I've got a 2000 Neil Pryde Diablo 9.2, which I rig on a NP RacePro 490 mast.
When I rig the sail, it looks a little weird to me. I need some reassurance
that its right.
When I rig to the specified dimensions, the top of the sail is WAY loose and
floppy. The mylar panel immediately below the Shear Tip is 100% loose and
wavy from the leech to mast. The panel below it is about 80% loose and wavy
(on the leech side). The next panel below is about 50% loose and wavy. The
panel below that is mostly flat and tensioned, with just a trace of
waviness. The leech of the top three panels droops significantly.
There are some "tensioning marks" stenciled on the very top panel of the
sail. The looseness in the panel is no where near these tensioning marks.
In fact, the entire panel is way loose.
I am using the mast tip fitting that came with my mast (which is a 99) ...
so I assume it's the right one. I also am pretty sure that I'm fully
inserting the sail's Shear Tip plug into the mast tip fitting correctly.
(I do notice that the Shear Tip fitting on the sail is conical in shape,
whereas the receiving mast fitting is cylindrical. Thus, there is some slop
when the Shear Tip plug is inserted into the mast. I assume this is by
design.)
So waddaya think? Is this the way it should look? If it is correct, it's
almost like more than a square meter of mylar at the top of the sail is
doing nothing at low wind speeds. At higher wind speeds, it doesn't look
like its doing anything either. (But I will say that I like the sail, am
impressed by it's wind range and, for a 9.2, it handles nicely.)