Prop vent tubes

[Patchman]

Wow, that leaves me with even more questions! :smile20:

 

[Patchman]

Ok so I guess the real idea is that it will allow air to escape if it cavitates? :smile21:

 

[John]

no it pulls air down to aerate the prop to control the cavitation

this is not an issue on most boats

 

[Patchman]

Pulls air down? So does it allow the prop to cavitate to get some rpm built up? Kind of like rollout on a drag car? think.gif think.gif

 

[Devilman]

kinda sorta.. can read thru this to see what folks say about it: http://www.riverracer.net/forums/showthread.php?49109-Venting-the-prop

 

[jimsplace]

It sounds like a reworked or a different prop would be the better fix.

How do you know where to vent with the currently prop?
I'm currious how it will work out.
 

 

[FL350]

Pretty common on #6's with 5 blade props and or with the standoff boxes

 

[Patchman]

Crap, that's what those radiator hoses are for.  think.gif

 

[scarabscs]

Its usually only done on larger boats that are slow to break over onto plane that run extremely large pitch props for big speed.  And yea, it just lets the prop suck some air from above water to cavitate a bit and get the rpms up.  Once they break over on plane and bite the rpms come back down. 

 

[John]

Its usually only done on larger boats that are slow to break over onto plane that run extremely large pitch props for big speed.  And yea, it just lets the prop suck some air from above water to cavitate a bit and get the rpms up.  Once they break over on plane and bite the rpms come back down. 

Translation for Patch

YOU WILL NEVER NEED IT!!!!!

 

[Patchman]

You never know where my boating habbit mite take me! think.gif think.gif :smile23:

 

[scarabscs]

Ive got a jack plate at the house ill make you a smoking deal on.  That will get you atleast 4 or 5 mph, and fix your porpoise problems  :smile28:  lemme know!

 

[Patchman]

I'm not sure if a jack plate will help. I think I'm trying to push a brick through the water, and it's fighting me! crazy.gif