What are these 52 CPMY

[TommyB]

Hi,
what exactly do these things do?
they are screwed in on one side, the other side is or was held in place with I guess 5200
They are lose on the aft side, the forward side is held in place with some screws
Do I need to remove and rebed?
I'm able to move the aft side downward appox 1/8" or so

 

[TommyB]

One more

 

[TROUBLE]

My guess is they are there to create a disturbance so the thru hulls dont suck air. Buts thats just my guess


Art

 

[TommyB]

My guess is they are there to create a disturbance so the thru hulls dont suck air. Buts thats just my guess

Art

those 5 holes go to some exhaust tube out the stern. But it's separate from main exhaust
Someone mentioned when they saw it , it was for anti-cavitation?
They sit right about the props

 

[Tim Powell]

My guess is they are there to create a disturbance so the thru hulls dont suck air. Buts thats just my guess


Art

I belive he said the through hulls lead to the exause. It is probley there to releave pressure so it wont calvotate. I have seen worse. My props have holes in them to releave pressure when backing down. fix it back and forget its there

 

[captddis]

They were supposed to give some lift by using the exhaust.

 

[Tim Powell]

so kinda underwater exaust

 

[TommyB]

They were supposed to give some lift by using the exhaust.

hmmm, exhaust port is about 6-10" over towards the outboard sides from these things
there is a 12" opening under the hull which T's off the one that goes out the stern which is about 4-5" in dia. Most of the noise / exhaust goes out the bottom there. I get just a few dribbles of water from the stern tubes
I'll look and see if there is some cross piece that goes from the main exhaust to those 5 through-hulls

Actually, looking at older pics, the main exhasust is a lot further away. more like 2 foot or so.
these 5 through hulls on each side exit right about my trim tabs

 

[SeaEric]

They're underwater exhaust. Read this article: http://www.hatterasowners.com/Brochures/48MY52CY/52CYB-0890.pdf

 

[saltshaker]

They're there to help prevent cavitation. I have them on my 65. The thru hull exhaust should be further forward and more outboard