Fins on the exit nozzle

[pyro723]

One of the guys I ride with just got a Blowsion trim system in, and theres no fins on the inside of the exit nozzle Like the stock units have. What's the diff. in having them vs. not?

 

[#ZERO]

Good question and Blowsion doesn't make that trim system, it's made by Skat-Trak as an accessory for their mag pumps. I would image there would be less restriction without the fins.

 

[DR3]

Good question and Blowsion doesn't make that trim system, it's made by Skat-Trak as an accessory for their mag pumps. I would image there would be less restriction without the fins.

yea u would think, but they must do something??

pro tech nozzles do not have fins either:dunno:

 

[DAG]

fins direct the turbulence within the nozzle.. and when the water suddenly take a 30 degree turn that turbulence is increased,, thus needing the fins to direct the flow more efficiently.

 

[Mouthfulloflake]

the protec nozzles without the fins have more issues with cavitation in my experience.

 

[Speedfreak]

My protec nozzle has fins just like a stock nozzle. And I have never experienced any cavation even with a bored nozzle, low pitched prop and a wetwolf cone. They must do something.

 

[WFO Speedracer]

I have one of the old Ocean pro nozzles with the fins,supposedly they make the water flow out of the exit nozzle in a straighter more controlled fashion,at least thats what ocean pro used to claim.:biggthumpup:

 

[spence]

yeah pjs's have fins too right?? i thought saw one with it on ebay

 

[sjetrider]

yea u would think, but they must do something??

pro tech nozzles do not have fins either:dunno:

My Pro-Tec has them???????????????????

 

[Mouthfulloflake]

the protec maxflow has fins, the older ones that used to be available in a few different bore diameters didn't have them ( thats what mine is and its FINLESS)

 

[DR3]

the protec maxflow has fins, the older ones that used to be available in a few different bore diameters didn't have them ( thats what mine is and its FINLESS)

i dunno, i just saw one the other day that was finless, didnt realize they had options:439:

 

[#ZERO]

My Pro-Tec trim system didn't come with any fins in the reduction nozzle.

I just bored the nozzle to 86.5mm this week but I have yet to try it out.

I also heard that these things have cavitation issues, so I might just keep my raider setup.

 

[Mouthfulloflake]

My protec nozzle is bored to 87 mm, it had cavitation issues with a 12/15 concord, and a WW cone, and 650 power.

I just bored the nozzle to 86.5mm this week but I have yet to try it out.

I also heard that these things have cavitation issues, so I might just keep my raider setup.