More cockpit drain stuff

[Bill Bloxham]

Found a scupper drain with a built in backflow preventer. Perhaps this is the answer a lot of us were looking for on this subject a week or so ago.
I would try 'em myself if I was not committed to 3 new sails and a traveler this year.
This is the URL. Scroll down the page.
Bill



mmmmmmbill@aol.com

[Larry DeMers]

Bill,

I am confused. Why would you be getting backflow in the cockpit scuppers? That scupper is above water level, even when heeled, as far as I am able to determine.

Which boat do you have? Are the cockpit scuppers located in the forward or aft sections of the cockpit?

A checkvalve equipped scupper is a very poor idea. Checkvalves are usually a ball and seat that blocks reverse flow. It also makes blockage of the scupper from debris much easier. Also, freezing temperatures can freeze the ball in any position, possibly restricting the water flow from your cockpit during winter layup time. I do not believe that the Coast Guard would approve of this idea in the cockpit. It increases the time that the cockpit will take to empty after being pooped with a wave, which could set you up for a disaster witht he very next wave that comes up your backside.

Find out why your scuppers are backflowing, and repair the situation. In 15,000 miles of sailing in big seas on Lake Superior, and some of that at 40-45 deg. heel, I have never seen or heard of the cockpit scuppers backflowing. Now my galley sink..ah, that is another thing entirely.

Larry DeMers
s/v DeLaMer
Cape Dory 30 ~~~Next Weekend Folks!..hee..finally!!~~~~

Found a scupper drain with a built in backflow preventer. Perhaps this is the answer a lot of us were looking for on this subject a week or so ago.
I would try 'em myself if I was not committed to 3 new sails and a traveler this year.
This is the URL. Scroll down the page.
Bill

demers@sgi.com

[Bill Bloxham]

Dear Larry:
Typhoon with 3 or more adults in boat. Boat does not have to heel.
I admit I do not know the flow capacity of the item I saw; shoot, I don't even know the flow capacity of the standard set up.
Do you think I could cover my boat in the winter?
Where do you think I could find the Coast Guard standards on this matter?
Thanks
Bill



mmmmmmbill@aol.com

[Larry DeMers]

Bill,

A Typhoon is a pretty boat. Nice lines and fast. Well, my smaller boat experience is in a C-Scow (20 ft./650 lb. planing monohull, that will hit 20, using 250 sq.ft. of sail, in a cat rig), which taught me a lot over my 18 years with her.
I wonder, when you load up the Ty with 3 adults..are these all 250 lb. linesmen from the local college? Or 100 lb. friends of your wife's softball team? If the stern is submersing, then I suspect you are over loaded or out of balance..but again, I have not been aboard a Ty yet.
As far as those scuppers go, it would not be as big a deal on a boat that was trailered. My perspective was narrowed into the large boats..it's hard to remember how diverse this group is..one of the better features in my opinion. If they offer two sizes of scupper, use the largest ones if possible. Keep your cockpit clean, and you should be fine.

The dangers I could picture were in cases where a wave runs you down while running or broad reaching. They can be green water and have a punch as well as a bunch of water that stays behind in the cockpit. The last thing you need is a slow drainage system because of the check valve in line with the scuppers..the next wave is coming and the cockpit is still half full...glub!

So the only real concern for you would be winter storage. As you say..cover that girl up nice and tight. Don't let water/ice form over the cockpit area's cover, as it will pool and freeze, tearing the cover, then the water will be in the cockpit, and the drains can and probably would end up freezing closed over time. Add a peak to the center of the cover, centered over the cockpit. Attach it to the center of a tripod made from 3 -2x2's .

Cheers!
Larry DeMers
s/v DeLaMer
Cape Dory 30 ~~We head to the boat next weekend! finally ~~~

Dear Larry:
Typhoon with 3 or more adults in boat. Boat does not have to heel.
I admit I do not know the flow capacity of the item I saw; shoot, I don't even know the flow capacity of the standard set up.
Do you think I could cover my boat in the winter?
Where do you think I could find the Coast Guard standards on this matter?
Thanks
Bill

demers@sgi.com

[Jim Stull]

Found a scupper drain with a built in backflow preventer. Perhaps this is the answer a lot of us were looking for on this subject a week or so ago.
I would try 'em myself if I was not committed to 3 new sails and a traveler this year.
This is the URL. Scroll down the page.
Bill

Hi Bill
When at dock it is not unusual to have 6 "full size" people in our CD25's cockpit. This combined with am 8Hp Honda and two 6 gal gas tanks is enough to depress the stern enough to backflow water into the cockpit. (When sailing with a reasonable load it's not an issue.) We found these exact drains 3 years ago at the Anapolis Sailboat show. Installing these drains was not just a simple exchange, however as we were in the process of a total rebuild we purchased and installed them. If you screw the grate off you will find a small ball which appears to be made of carbon.
Now for the bottom line: THEY DON'T WORK! The ball will float up but most certainly will not stop the entrance of water. The subsequent year at Anapolis we found the dealer and broached the issue. He was totally un-interested. We sail on Lake Erie and thought that they might have been designed for salt water. However last winter spent in the Keys disproved that idea. Subsequently I machined a small top from bronze, 5200ed a rubber washer to the disc and threaded the top of the $62 drain. The home made disc can be spun down to seal the drain when the load in the cockpit will be more than the designer anticipated. Works great. (Obviously, they must be left open at all other times.)
Jim



jtstull@earthlink.net

[Larry DeMers]

Incredible! Good adaptation to circuvent the problem though. Do you remove the cover completely when sailing, or just screw it above the seat to allow the water to drain?

Larry DeMers
s/v DeLaMer
Cape Dory 30

Found a scupper drain with a built in backflow preventer. Perhaps this is the answer a lot of us were looking for on this subject a week or so ago.
I would try 'em myself if I was not committed to 3 new sails and a traveler this year.
This is the URL. Scroll down the page.
Bill

Hi Bill
When at dock it is not unusual to have 6 "full size" people in our CD25's cockpit. This combined with am 8Hp Honda and two 6 gal gas tanks is enough to depress the stern enough to backflow water into the cockpit. (When sailing with a reasonable load it's not an issue.) We found these exact drains 3 years ago at the Anapolis Sailboat show. Installing these drains was not just a simple exchange, however as we were in the process of a total rebuild we purchased and installed them. If you screw the grate off you will find a small ball which appears to be made of carbon.
Now for the bottom line: THEY DON'T WORK! The ball will float up but most certainly will not stop the entrance of water. The subsequent year at Anapolis we found the dealer and broached the issue. He was totally un-interested. We sail on Lake Erie and thought that they might have been designed for salt water. However last winter spent in the Keys disproved that idea. Subsequently I machined a small top from bronze, 5200ed a rubber washer to the disc and threaded the top of the $62 drain. The home made disc can be spun down to seal the drain when the load in the cockpit will be more than the designer anticipated. Works great. (Obviously, they must be left open at all other times.)
Jim

demers@sgi.com

[Jim Stull]

Incredible! Good adaptation to circuvent the problem though. Do you remove the cover completely when sailing, or just screw it above the seat to allow the water to drain?

Larry DeMers
s/v DeLaMer
Cape Dory 30

Found a scupper drain with a built in backflow preventer. Perhaps this is the answer a lot of us were looking for on this subject a week or so ago.
I would try 'em myself if I was not committed to 3 new sails and a traveler this year.
This is the URL. Scroll down the page.
Bill

Hi Bill
When at dock it is not unusual to have 6 "full size" people in our CD25's cockpit. This combined with am 8Hp Honda and two 6 gal gas tanks is enough to depress the stern enough to backflow water into the cockpit. (When sailing with a reasonable load it's not an issue.) We found these exact drains 3 years ago at the Anapolis Sailboat show. Installing these drains was not just a simple exchange, however as we were in the process of a total rebuild we purchased and installed them. If you screw the grate off you will find a small ball which appears to be made of carbon.
Now for the bottom line: THEY DON'T WORK! The ball will float up but most certainly will not stop the entrance of water. The subsequent year at Anapolis we found the dealer and broached the issue. He was totally un-interested. We sail on Lake Erie and thought that they might have been designed for salt water. However last winter spent in the Keys disproved that idea. Subsequently I machined a small top from bronze, 5200ed a rubber washer to the disc and threaded the top of the $62 drain. The home made disc can be spun down to seal the drain when the load in the cockpit will be more than the designer anticipated. Works great. (Obviously, they must be left open at all other times.)
Jim

We just back them off about 3/8" when sailing but they are part of the "leaving the boat" checklist, at which time they wait in the sink.
Jim



jtstull@earthlink.net