extractor theory confirmed, charlie. and damn your video sucksass..lol :biggrin:
with a clear 3/8" hose, of about 4 1/2 ft, hooked to the stinger fitting and the other end of the hose going into a 2 litter soda bottle half full of water, the water is drawn out by the exhaust, however, I've found that the liquid must br primed into the fitting by a pump bulb for the siphoning to take effect. this is with the bottle of water below the level of the ski. after the water is primed to the stinger while the ski is running, it will then draw the water out on it's own.
and this pipe is a factory half-pipe where the stinger fitting is sitting straight up 90 degrees with the pipe, where a lot of the aftermarket companies have set them at a 45 degree angle that I'm sure this helps with the drawing effect, just like the fitting for the bilge in the pump.
so it is a combination of the two things processing water, you have the water feed from the pump with the 3/8 pisser going out of the ski, passing the residual water to the headpipe at a relieved pressure, and the stinger fitting pulling the low pressure feed off of the headpipe as the the head pipe keeps the siphoning effect primed at the stinger. also, since the head pipe is above the stinger fitting it also has gravitational aspects in it's favor for keeping the stinger fitting primed for siphoning, as well.