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what specific length are you using,jm sells them a little shorter and lil longer than stock? Anyone using one long strap up and over? Id prefer not to have to bust a knuckle getting one down to short or having to tie knots in one too long.

http://www.x-h2o.com/index.php?threads/to-taper-bore-or-not-to-taper-bore-the-reduction-nozzle-an-analytical-approach.162014/ dont break a nail...lol

how many are running this close on the trailing edge to stator,better be perfect leading edge and root to run this straight and close on hub

why dont they make a real hin at the point they are at now,its almost oem type company at this point

if you want the stop switch to work with your lanyard and stop switch without using a extra on off switch to have to remember to turn off and not kill your battery,get the shifty mod relay,its way nicer

there is a really good thread posted from a fluid dynamics engineer on why taper boring is waste of time..its in driveline. as far as stock upward angle,the 65v has the most upward pitch,the x and t are both straight back or close to it

how many are using the skat reduction nozzle with swapable rings,no veins,make much diff? using the 65v,doesnt take a very large bore.paper thin. what type and size are most running with the larger 900 to 1000 motors. Seems like prop setups are getting closer and closer to stator with some...

you should be able to keep the pipe in the right temp range with just the top screw,just takes some time to get just right

to tight squish is prolly why your compression is so high with 44cc domes. jacked up squish will toast a motor pretty quick on high comp and low oct.

theres a good reason skat and solas both use 12 or more vanes in mag pumps for higher hp.I spoke to skat about putting the prop very close to the stator,they found disadvantages in doing so for high rpm applications but no testing done for freestyle aps. In terms of straightening water,ive tried...

later models of the rrp came with 2 jets,the first controls constant pressure for rpm the second sprays amount of water for given water temp. I would guess that hiro tuned this pipe with 110 jet in 70 something deg water,but at any rate diff water temps,diff port timing,pump size and prop,ign...

wow mark,nice edit but more importantly nice angles.never cared for first person ski vids till this one.

take my money

both theory's hold water..haha alot of motors, turbos,pipes make better power hot,but all the other aps have remote cold intakes somewhere besides sucking all the hot air in the hull around the motor.cold air always makes more hp.. tough to dyno this accurately in a ski. The 2 half inch lines...

when we gonna see some of those sick et exh mani out there in use?

wow thats a ton of water,some headpipes are sim to this one. what do the other holes spray like. Can always epoxy it shut and redrill a realistic size hole