Bilge pump.

   I suppose you could have a wind driven one running all the time, mind could be dangerous if you fell on it, no, stick with a bailer and a bilge pump to get the last dregs.

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423zero Send Private Message Find Member's Posts Really should get out more Joined: 08 Jan 15 Location: United Kingdom Online Status: Offline Posts: 3420	Post Options Post Reply Quote 423zero Report Post Quote Reply Topic: Bilge pump. Posted: 26 Feb 18 at 7:00pm
	I suppose you could have a wind driven one running all the time, mind could be dangerous if you fell on it, no, stick with a bailer and a bilge pump to get the last dregs.

Presuming Ed Send Private Message Find Member's Posts Really should get out more Joined: 26 Feb 05 Location: United Kingdom Online Status: Offline Posts: 641	Post Options Post Reply Quote Presuming Ed Report Post Quote Reply Posted: 26 Feb 18 at 6:20pm
	Ballpark: taking a cockpit of 3m x 1m x 0.3m deep gives 900kg of water. Whale's largest bilge pump can move 189 L/min, so that's nearly 5 minutes to empty the cockpit. Water is heavy stuff. While it's doing that, it's drawing 18A at 12V. So that's 18AHrs. A large power tool battery is 3Ahr, so you would probably need at least 7, what with pulling all that current. And that means that your batteries are dead and can't pump any more. And that current is against zero head. Actually pumping the water up and out would pull more. A lead acid battery of nominal 85AH capacity - so about 40ish available, unless you want to kill it - would give you 2 and a bit capsizes worth of pump time. But that battery weighs 25kg. And you're still pumping for 5 mins a time. Electric bilge pumps are bad for large amounts of water. If you want to move the water fast, you want a petrol powered trash pump. Honda's smallest will pump 710 lt/min. Weighs 47kg dry, though... Better to stick with a bailer/bucket, I think. Edited by Presuming Ed - 26 Feb 18 at 6:41pm

423zero Send Private Message Find Member's Posts Really should get out more Joined: 08 Jan 15 Location: United Kingdom Online Status: Offline Posts: 3420	Post Options Post Reply Quote 423zero Report Post Quote Reply Posted: 26 Feb 18 at 1:26pm
	This huge builders bucket got all the hallmarks of a decent variety show.

JohnJack Send Private Message Find Member's Posts Far too distracted from work Joined: 12 Mar 13 Online Status: Offline Posts: 246	Post Options Post Reply Quote JohnJack Report Post Quote Reply Posted: 26 Feb 18 at 8:56am
	I second (or third, or fourth) angry crew with a bailer or bucket can shift way more water than any bilge pump ever will, its not like there isn't much room in a GP (under the stern deck). As long as it is tied to something where it cant move around and get under you feet it should be fine. Another option is more bigger air ags. Our old GP, we had to big pillow bags under the stern deck and had bigger bags under the seats (it had a bow bulkhead). The problem with a GP (Ents are the same) when full swamped they tend to sit very low at the stern, sometime with the transom submerged (which obviously doesn't aid bailing). You will often have water pouring in through the centreboard case at this point to. The extra air bags at the stern counters this by making the back of the oat more buoyant. You also bring up less water when you recover.

Riv Send Private Message Find Member's Posts Far too distracted from work Joined: 23 Nov 13 Location: South Devon Online Status: Offline Posts: 353	Post Options Post Reply Quote Riv Report Post Quote Reply Posted: 25 Feb 18 at 8:48pm
	I like the idea of using a drill and pump, wouldn't weigh much. I've got a single action lift pump on the club wayfarer, tends to get blocked easily by leaves so pump would need a good strum box
	Mistral Div II prototype board, Original Windsurfer, Hornet built'74.

423zero Send Private Message Find Member's Posts Really should get out more Joined: 08 Jan 15 Location: United Kingdom Online Status: Offline Posts: 3420	Post Options Post Reply Quote 423zero Report Post Quote Reply Posted: 25 Feb 18 at 7:45pm
	Where would you put big bucket ? Have visions of putting foot in it Hand bailer seems best option, would still cost you race, a Gp with air bags holds a substantial amount of water coming up from a capsize.

Rupert Send Private Message Find Member's Posts Really should get out more Joined: 11 Aug 04 Location: Whitefriars sc Online Status: Offline Posts: 8956	Post Options Post Reply Quote Rupert Report Post Quote Reply Posted: 25 Feb 18 at 6:03pm
	I'd see it as an aid to removing water dumped into the boat whilst upright than for post capsize water removal. 2 big buckets, as has been said, for that.
	Firefly 2324, Puffin 229, Minisail 3446 Mirror 70686

423zero Send Private Message Find Member's Posts Really should get out more Joined: 08 Jan 15 Location: United Kingdom Online Status: Offline Posts: 3420	Post Options Post Reply Quote 423zero Report Post Quote Reply Posted: 25 Feb 18 at 5:52pm
	Small electric pump and removable rechargable battery (drill size) plus a bailer sounds like a good combination.

JimC Send Private Message Find Member's Posts Visit Member's Homepage Really should get out more Joined: 17 May 04 Location: United Kingdom Online Status: Offline Posts: 6662	Post Options Post Reply Quote JimC Report Post Quote Reply Posted: 25 Feb 18 at 5:13pm
	A bilge pump won't be as fast as a bucket when the bat is completely swamped, but it would be awfully handy for the interim period where the boat is sailable, but has too much water in for self bailers to work, especially if you could operate the bilge pump when sat out. And because they were expensive, advantageous, but inessential kit in the days when cost of ownership was a much bigger thing that it typically is now. most classes prohibited them.

Do Different Send Private Message Find Member's Posts Visit Member's Homepage Really should get out more Joined: 26 Jan 12 Location: North Online Status: Offline Posts: 1312	Post Options Post Reply Quote Do Different Report Post Quote Reply Posted: 25 Feb 18 at 4:49pm
	I can't imagine any practical bilge pump being fast enough to warrant the clutter of fitting it. When I started at my first club which was open sea all the Wayfarers always carried heavy duty builders buckets, seem to do the job.