Anyone ever try

[sailortonyb Allied Mis]

The pump you replaced

Look at the bottom of your bilge pump and you will see that the pump is raised slightly from the frame. I think this is because you dont want to pump every drop of water out of your bulge because oil floats on water and that is what is theoretically left on the bottom. By the time your pump kicks on and the fluid level is high enough to be sucked in, the oily part is above the pumping level. If that makes sense.I think you can get it bone dry if you get a pump - self priming - the type of pump that went bad on me and you replaced it with a normal bilge pump. The one that went bad was a pump that could 'lift'. If you had your hose cut perfectly flat and had it perfectly flush with the bilge bottom, you grind a shallow inlet at the base level. This might work, but damn, those pumps are expensive. IF this works, I would use a a manual on/off switch or an electronic bilge switch where you can adjust it to any level. Tony B

 

[Ross]

N&E, polyester resin bonds to pvc. this I know for certain

that is the manner of my cockpit drain installation. 2 inch pvc penetrating the cockpit bulkhead and the transom and glassed inside and outside. If the bottom is a half inch thick build that thickness on the pvc outside and fair it to the keel. You will probably spread across twenty inches of the bottom to get it fair and not build a lump.

 

[Andy1237]

Diaphragm pump?

The 340 has a deep bilge but still gets a lot of backwash from the long run overboard. I'm tempted to spend the money to put in a diaphragm pump (which cost a lot more than the little Rule pumps). It could be mounted in a locker closer to the through hull and suck the bilge dry. Until then, my 1 gal shop vac works (although its a hassle)Would that work for you N&EZ

 

[sailaway78]

Can you smell the smoke

Andy,my mind is working overtime, and you should be able to smell the smoke all the way to Joplin. I have thought about using a diaphram pump, or a piston pump and locating it much closer to a through hull. This certainly would help. My bilge pump is located close to the rear of the keel, with the discharge through the transom. A long run to be sure, and quite a bit of water in that much 1 & 1/8 hose. I'm not real crazy about the idea of a check valve in the discharge hose, as it is just one more thing that sooner or later will screw up. But Ross's idea of building a small sump behind the keel sure has me to thinking. Doing this would let me have two or three inches of water down in a very small area. Like I said, I don't know if I have the guts to cut a hole that big in the hull, far below the water line, but I sure do like that idea. Maybe it's just anal, but I do not like a wet bilge, especially when it's as big as this one.

 

[Timo42]

Duct tape

why not tape the sides of a cheap pump so it can only suck from the bottom and plumb it with 1/2" hose, wire it to a moisture sensor, Vellman makes a cheap kit, see if that works before spending big bucks, Tim

 

[Ross]

Timo42 might have something there have a large pump

and hose to handle the bulk of the water and a small pump and hose to mop up the back flow from the large pump. I think a pvc pipe cap would be just about right for a sump and certainly reliable.