Are scuppers still considered sinkers of surf boats ?

[tor*p*do]

hah it wasnt me but im pretty sure i know who did it...

i wish i would have thought of that...i definitely enjoyed the rewards of their brilliant plan..i guess there is always next time

that is stupid

[djraider700]

A good hood seal, ratchet hood strap, blocked front hood holes, a 500gph rule, and stock siphon is all i run. Bilge pump doesnt even pump a lot when i go under. I ride 95% surf and so do my buddies who don't run scuppers either.

How much water are you really getting in your hull? If it's THAT much then you have to seal up a little better IMO.

Taking steps to keep the water out in the first place > Scuppers

[ratboy120206]

put a scupper on there! on big days use pipe plugs to close it off. Doesnt matter how good your hood seal is if you get seperated and the skis upside down!

[djraider700]

put a scupper on there! on big days use pipe plugs to close it off. Doesnt matter how good your hood seal is if you get seperated and the skis upside down!

Scuppers don't help upside down boats either lol. Good seal will give you more time to get to the ski. Been there done that a hundred times with no problem. Ask hurricane Irene haha.

[227]

After reading most of these posts, it's clear that most of you don't understand how a ski is engineered to keep water out of the engine compartment when its upside down. When your ski gets ripped from your hands and turns upside down, the normal air in your engine compartment gets trapped and creates an air pressure bubble within in your engine compartment. The inability for the air to escape quickly from your engine compartment keeps the water out. In other words air has to escape before water can get in. When a ski is upside down, water can really only enter in large amounts through the hood breather holes which are connected to the long tubes that run to within a few inches of the bottom of your hull. While upside down, those tubes, which are now facing up, extend past the water line (Bond line) and prevent water from coming in through the hood vents. Even with a poor hood seal, a ski should be able to float upside down for several minutes easily without ingesting very much water. When a scupper is added to a ski, and it is flipped upside down, the scupper completely compromises this design and is exactly the same as if you cut a 2" hole in the bottom of your ski. When upside down, there is no water pressure against the scupper to hold the valve closed, so the scupper becomes a 2" hole to allow that trapped air pressure to escape quickly, which is why skis with scuppers, when upside down, sink 5 times faster than skis without scuppers. Removing the drop tubes on your hood, or having a crack in your hood liner will have the same effect on an upside down ski as a scupper although not as fast. Like I said before, when it comes to surf skis equipped with a scupper, the disadvantages outweigh the advantages.

[FlightPlanDan]

I would never have a scupper.
Competition riders are the exception. These guys gotta do trick after trick.....can't putt around waiting for the bilge to pump out. Flat or surf. Comp riders need scuppers. And they have them.
Recreational riders have no need that I can see for scuppers.
Just an added liability to be just like the big boys!

[_evan]

[QUOTE=227;1237399]After reading most of these posts, it's clear that most of you don't understand how a ski is engineered to keep water out of the engine compartment when its upside down. When your ski gets ripped from your hands and turns upside down, the normal air in your engine compartment gets trapped and creates an air pressure bubble within in your engine compartment. The inability for the air to escape quickly from your engine compartment keeps the water out. In other words air has to escape before water can get in. When a ski is upside down, water can really only enter in large amounts through the hood breather holes which are connected to the long tubes that run to within a few inches of the bottom of your hull. While upside down, those tubes, which are now facing up, extend past the water line (Bond line) and prevent water from coming in through the hood vents. Even with a poor hood seal, a ski should be able to float upside down for several minutes easily without ingesting very much water. When a scupper is added to a ski, and it is flipped upside down, the scupper completely compromises this design and is exactly the same as if you cut a 2" hole in the bottom of your ski. When upside down, there is no water pressure against the scupper to hold the valve closed, so the scupper becomes a 2" hole to allow that trapped air pressure to escape quickly, which is why skis with scuppers, when upside down, sink 5 times faster than skis without scuppers. Removing the drop tubes on your hood, or having a crack in your hood liner will have the same effect on an upside down ski as a scupper although not as fast. Like I said before, when it comes to surf skis equipped with a scupper, the disadvantages outweigh the advantages.[/QUOTE]
^^^ what he said

[Freakrider]

It appears from info in this thread that the risk of using a scupper in the surf depends on several factors: rider experience, size of surf, good buddy system w/ quick connect tow rope, good hood seal and the type of tricks in the surf that might increase your chance to seperate you from your ski (unable to never let go)....did I miss one ?

[BruceSki]

That sounds spot on to me. And add use your judgement as to when you should plug It up for the day.

[Freakrider]

That sounds spot on to me. And add use your judgement as to when you should plug It up for the day.

agreed...


Any other opinions/info on scuppers in the surf ?

" scuppers, not for kids! "

[Sharky]

well said , I have contemplated not running a scupper and just haveing a bilge in my ski, the only plus is that water gets out quick whilst ridding and you dont have to replace bilges and switches which always corrode , why has no one designed a scupper that has some sort of inner flap ( in the engine bay area) that will shut with incoming air pressure or only when the ski is upside down, I would love to have just a lanyard on a swith to my leg that we i come off just shuts the scupper ....i would never need a bildge again...ps my hoods never come off so no issue LOL (inner hood seal like the XFT is the best )

After reading most of these posts, it's clear that most of you don't understand how a ski is engineered to keep water out of the engine compartment when its upside down. When your ski gets ripped from your hands and turns upside down, the normal air in your engine compartment gets trapped and creates an air pressure bubble within in your engine compartment. The inability for the air to escape quickly from your engine compartment keeps the water out. In other words air has to escape before water can get in. When a ski is upside down, water can really only enter in large amounts through the hood breather holes which are connected to the long tubes that run to within a few inches of the bottom of your hull. While upside down, those tubes, which are now facing up, extend past the water line (Bond line) and prevent water from coming in through the hood vents. Even with a poor hood seal, a ski should be able to float upside down for several minutes easily without ingesting very much water. When a scupper is added to a ski, and it is flipped upside down, the scupper completely compromises this design and is exactly the same as if you cut a 2" hole in the bottom of your ski. When upside down, there is no water pressure against the scupper to hold the valve closed, so the scupper becomes a 2" hole to allow that trapped air pressure to escape quickly, which is why skis with scuppers, when upside down, sink 5 times faster than skis without scuppers. Removing the drop tubes on your hood, or having a crack in your hood liner will have the same effect on an upside down ski as a scupper although not as fast. Like I said before, when it comes to surf skis equipped with a scupper, the disadvantages outweigh the advantages.