Re: Stus-List Bilge pump capacity?

[Dennis C. via CnC-List]

Don't forget to carry a couple toilet wax rings in addition to the wooden
or pliable plugs.  :)

Dennis C.
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Re: Stus-List Bilge pump capacity?

[Josh Muckley via CnC-List]

I've been holding on to it for a few weeks now.  

Josh
On Apr 14, 2016 9:59 PM, "John Pennie via CnC-List" <cnc-list@cnc-list.com>
wrote:

> Only sailors tell these stories on themselves…
>
> John
>
> On Apr 14, 2016, at 9:38 PM, Josh Muckley via CnC-List <
> cnc-list@cnc-list.com> wrote:
>
> While re-launching this year I accidentally left the depth transducer
> out.  It is a hole about 1.5 or 1.75 inches in diameter.  The bilge pump
> started almost immediately but since I was on deck I assumed that water had
> been trapped and was now draining into the bilge.  After about 30 seconds
> when the pump didn't shutoff I looked below to see a geyser.  I jumped down
> and grabbed one of the wooden plugs which had conveniently floated into
> easy reach.  Water was at the bottom of the floorboards!  I hoped up and
> asked the travel lift operator to lift the boat up.  Once the boat was
> clear of the water I unplugged the hole.  With the bilge pump running, and
> water free to run out, it still took about 5 minutes to drain.
>
> Josh Muckley
> S/V Sea Hawk
> 1989 C 37+
> Solomons, MD
> On Apr 14, 2016 6:11 PM, "Patrick Davin via CnC-List" <
> cnc-list@cnc-list.com> wrote:
>
>> Interesting. That's basically what I was wondering. I was looking for a
>> calculator, but I found
>> this: http://www.whsyc.org/Flooding/Flooding.html
>>
>> A 1.5" hole 2 feet below waterline results in 62.5 gpm (per minute!) =
>> 3750 gph. Even 4000 gph capacity wouldn't keep up with that, after
>> accounting for efficiency losses.
>>
>> So why do some people go for high bilge pump capacities? (like 2000-4000
>> gph total)
>>
>> Sure it gives you a bit more time, but if I'm not at the boat it's
>> probably not going to make a difference (there's often no one on our dock
>> for 12+ hours between say 8pm and 8am), and if I am, it will only make a
>> small difference. (ex,  the difference between 800+800gph vs 800+2000gph...
>> assuming 75% efficiency that's 1200gph vs 2100gph).
>>
>> So with that 1.5" hole I'd take on net water of ~42.5 gpm vs 25.8 gpm. So
>> whether 42 gallons per minute are coming in, or 25 gallons per minute, I
>> still need to plug it really friggin quickly.
>>
>> I do have the StaPlug btw, and Stay Afloat putty.
>> Just having a hard time imagining scenarios where an 800+2000 would make
>> a critical difference vs an 800+800, and wondering if this is just one of
>> those things where boaters are a bit paranoid and choosing the "bigger is
>> better" approach when that's not necessarily true. From what I can tell,
>> *broken* bilge pumps are the biggest issue (clogged, burnt out, bad wiring,
>> etc).
>>
>>
>> On Thu, Apr 14, 2016 at 1:22 PM, <cnc-list-requ...@cnc-list.com> wrote:
>>
>>> From: Josh Muckley <muckl...@gmail.com>
>>> To: "C List" <cnc-list@cnc-list.com>
>>> Cc:
>>> Date: Thu, 14 Apr 2016 16:21:23 -0400
>>> Subject: Re: Stus-List Bilge pump capacity?
>>>
>>> You'll have a shockingly hard time keeping up with a 1.5 inch hole no
>>> matter what size bilge pump you have.  Plugging the hole is always better.
>>> Its gonna sink if the seacock disintegrates while you're not there.
>>>
>>> Josh Muckley
>>> S/V Sea Hawk
>>> 1989 C 37+
>>> Solomons, MD
>>>
>>
>>
>>
>> ___
>>
>> This list is supported by the generous donations of our members. If you
>> like what we do, please help us pay for our costs by donating. All
>> Contributions are greatly appreciated!
>>
>> ___
>
> This list is supported by the generous donations of our members. If you
> like what we do, please help us pay for our costs by donating. All
> Contributions are greatly appreciated!
>
>
>
> ___
>
> This list is supported by the generous donations of our members. If you
> like what we do, please help us pay for our costs by donating. All
> Contributions are greatly appreciated!
>
>
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what we do, please help us pay for our costs by donating. All Contributions are 
greatly appreciated!

Re: Stus-List Bilge pump capacity?

[Josh Muckley via CnC-List]

While re-launching this year I accidentally left the depth transducer out.
It is a hole about 1.5 or 1.75 inches in diameter.  The bilge pump started
almost immediately but since I was on deck I assumed that water had been
trapped and was now draining into the bilge.  After about 30 seconds when
the pump didn't shutoff I looked below to see a geyser.  I jumped down and
grabbed one of the wooden plugs which had conveniently floated into easy
reach.  Water was at the bottom of the floorboards!  I hoped up and asked
the travel lift operator to lift the boat up.  Once the boat was clear of
the water I unplugged the hole.  With the bilge pump running, and water
free to run out, it still took about 5 minutes to drain.

Josh Muckley
S/V Sea Hawk
1989 C 37+
Solomons, MD
On Apr 14, 2016 6:11 PM, "Patrick Davin via CnC-List" <cnc-list@cnc-list.com>
wrote:

> Interesting. That's basically what I was wondering. I was looking for a
> calculator, but I found
> this: http://www.whsyc.org/Flooding/Flooding.html
>
> A 1.5" hole 2 feet below waterline results in 62.5 gpm (per minute!) =
> 3750 gph. Even 4000 gph capacity wouldn't keep up with that, after
> accounting for efficiency losses.
>
> So why do some people go for high bilge pump capacities? (like 2000-4000
> gph total)
>
> Sure it gives you a bit more time, but if I'm not at the boat it's
> probably not going to make a difference (there's often no one on our dock
> for 12+ hours between say 8pm and 8am), and if I am, it will only make a
> small difference. (ex,  the difference between 800+800gph vs 800+2000gph...
> assuming 75% efficiency that's 1200gph vs 2100gph).
>
> So with that 1.5" hole I'd take on net water of ~42.5 gpm vs 25.8 gpm. So
> whether 42 gallons per minute are coming in, or 25 gallons per minute, I
> still need to plug it really friggin quickly.
>
> I do have the StaPlug btw, and Stay Afloat putty.
> Just having a hard time imagining scenarios where an 800+2000 would make a
> critical difference vs an 800+800, and wondering if this is just one of
> those things where boaters are a bit paranoid and choosing the "bigger is
> better" approach when that's not necessarily true. From what I can tell,
> *broken* bilge pumps are the biggest issue (clogged, burnt out, bad wiring,
> etc).
>
>
> On Thu, Apr 14, 2016 at 1:22 PM, <cnc-list-requ...@cnc-list.com> wrote:
>
>> From: Josh Muckley <muckl...@gmail.com>
>> To: "C List" <cnc-list@cnc-list.com>
>> Cc:
>> Date: Thu, 14 Apr 2016 16:21:23 -0400
>> Subject: Re: Stus-List Bilge pump capacity?
>>
>> You'll have a shockingly hard time keeping up with a 1.5 inch hole no
>> matter what size bilge pump you have.  Plugging the hole is always better.
>> Its gonna sink if the seacock disintegrates while you're not there.
>>
>> Josh Muckley
>> S/V Sea Hawk
>> 1989 C 37+
>> Solomons, MD
>>
>
>
>
> ___
>
> This list is supported by the generous donations of our members. If you
> like what we do, please help us pay for our costs by donating. All
> Contributions are greatly appreciated!
>
>
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what we do, please help us pay for our costs by donating. All Contributions are 
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Re: Stus-List Bilge pump capacity?

[John Pennie via CnC-List]

Agree on the broken pump comment but...

The bigger pump does exactly what you said - buys time while you make a repair. 
 As you know it's not always as simple as sticking a nice tapered plug into a 
nice round hole.  This is especially true in the event of a collision (shipping 
container, etc) where the temporary repair may take a little more creativity, 
time ... and trial and error.   Obviously the further offshore the more of an 
issue this can become.

John

Sent from my iPad

> On Apr 14, 2016, at 6:10 PM, Patrick Davin via CnC-List 
> <cnc-list@cnc-list.com> wrote:
> 
> Interesting. That's basically what I was wondering. I was looking for a 
> calculator, but I found 
> this: http://www.whsyc.org/Flooding/Flooding.html
> 
> A 1.5" hole 2 feet below waterline results in 62.5 gpm (per minute!) = 3750 
> gph. Even 4000 gph capacity wouldn't keep up with that, after accounting for 
> efficiency losses. 
> 
> So why do some people go for high bilge pump capacities? (like 2000-4000 gph 
> total)
> 
> Sure it gives you a bit more time, but if I'm not at the boat it's probably 
> not going to make a difference (there's often no one on our dock for 12+ 
> hours between say 8pm and 8am), and if I am, it will only make a small 
> difference. (ex,  the difference between 800+800gph vs 800+2000gph... 
> assuming 75% efficiency that's 1200gph vs 2100gph). 
> 
> So with that 1.5" hole I'd take on net water of ~42.5 gpm vs 25.8 gpm. So 
> whether 42 gallons per minute are coming in, or 25 gallons per minute, I 
> still need to plug it really friggin quickly. 
> 
> I do have the StaPlug btw, and Stay Afloat putty. 
> Just having a hard time imagining scenarios where an 800+2000 would make a 
> critical difference vs an 800+800, and wondering if this is just one of those 
> things where boaters are a bit paranoid and choosing the "bigger is better" 
> approach when that's not necessarily true. From what I can tell, *broken* 
> bilge pumps are the biggest issue (clogged, burnt out, bad wiring, etc). 
> 
> 
>> On Thu, Apr 14, 2016 at 1:22 PM, <cnc-list-requ...@cnc-list.com> wrote:
>> From: Josh Muckley <muckl...@gmail.com>
>> To: "C List" <cnc-list@cnc-list.com>
>> Cc: 
>> Date: Thu, 14 Apr 2016 16:21:23 -0400
>> Subject: Re: Stus-List Bilge pump capacity?
>> You'll have a shockingly hard time keeping up with a 1.5 inch hole no matter 
>> what size bilge pump you have.  Plugging the hole is always better.  Its 
>> gonna sink if the seacock disintegrates while you're not there.
>> 
>> Josh Muckley
>> S/V Sea Hawk
>> 1989 C 37+
>> Solomons, MD
>> 
> 
> 
> ___
> 
> This list is supported by the generous donations of our members. If you like 
> what we do, please help us pay for our costs by donating. All Contributions 
> are greatly appreciated!
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what we do, please help us pay for our costs by donating. All Contributions are 
greatly appreciated!

Re: Stus-List Bilge pump capacity?

[Joel Aronson via CnC-List]

There is an article in the new Sail magazine. In it it says you would need
something like 3000 gph capacity if a large hose broke.

Joel

On Thursday, April 14, 2016, John Pennie via CnC-List 
wrote:

> Patrick
>
> Just to correct my earlier post - if you do go with a third pump, the pump
> itself doesn't have to be any higher.  Just the float switch for it.  Make
> it a hummer of a pump a give it a dedicated circuit.
>
> John
>
>
> Sent from my iPad
>
> On Apr 14, 2016, at 4:08 PM, John Pennie via CnC-List <
> cnc-list@cnc-list.com
> > wrote:
>
> Patrick:
>
> I don't think anything will keep the boat afloat if a 1-1/2" thru hull
> disintegrated.
>
> I do understand your concern but given the difficulty have you considered
> adding a third pump slightly higher as an emergency pump?  As you will be
> running new plumbing anywhere that is convenient you can make it as big as
> you like.
>
> John
>
> Sent from my iPad
>
> On Apr 14, 2016, at 3:40 PM, Patrick Davin via CnC-List <
> cnc-list@cnc-list.com
> > wrote:
>
> I've been debating my bilge pump plan for a few months now, and having
> trouble deciding. What have others here decided is sufficient pump
> capacity?
>
> I have two Rule 800s now and am considering upgrading one to an 1100 or
> 2000 gph, as a high water alarm. That will require upgrading the hose from
> 3/4" to 1 1/8", and enlarging the thruhull at the toerail. One of the bilge
> hoses runs through the stbd head (into the head cubbies) and the other runs
> through the hanging locker fwd of the head. Upgrading will require
> enlarging some of the hose holes in the boat's liner (below the cabin sole)
> probably, and of course hole sawing a larger thru hull. So it's a good deal
> more work than just replacing bilge pumps, their wiring, and adding a float
> switch + alarm.
>
> From Wally's page I know he installed a Rule 2000.
> http://www.wbryant.com/StellaBoat/Projects/bilgepmp/bilgepmp.htm
> However it sounds like Wally's LF38 had his hoses run differently - to the
> stern quarter - while mine are to stbd mid-ships.
>
> With two 800's I'm at the low end of the 1600-2000 gph capacity range
> recommended by West Marine (and yes I've read all about how actual capacity
> may be much lower, due to voltage drop, head pressure, etc). I've also
> heard it doesn't make much sense to say that bigger boats need bigger bilge
> pumps - a 20' boat will sink just as fast (or faster) with a 1.5" hole as a
> 38' one will.
>
> I'm more concerned with having the capacity to prevent the boat from
> sinking at dock if say a 1.5" thruhull disintegrated somehow. Less
> concerned with emergency pumping while onboard, because I'm not going far
> offshore and I have a lot of emergency hole plugging options to try (putty,
> foam, wood bungs, carrots, etc).
>
> -Patrick
> 1984 C Landfall 38
> Seattle, WA
>
>
> ___
>
> This list is supported by the generous donations of our members. If you
> like what we do, please help us pay for our costs by donating. All
> Contributions are greatly appreciated!
>
> ___
>
> This list is supported by the generous donations of our members. If you
> like what we do, please help us pay for our costs by donating. All
> Contributions are greatly appreciated!
>
>

-- 
Joel
301 541 8551
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Re: Stus-List Bilge pump capacity?

[Dave Godwin via CnC-List]

Patrick,

As others have said and that I can attest to, you will not save a boat with a 
1-1/2” hole in it with a few bilge pumps.

I just got back from working on the bilge pump upgrade to my boat. My goal is 
to have a small bilge pump to pull out the usual amount of water that ends up 
in the bilge. I am service the existing Whale Gusher 10 manual pump located at 
the helm. And I have added a Rule 2000 pump on a raised platform in the bilge 
for water evacuation that the small (650 GPH) pump cannot keep up with. The new 
Rule requires a new thru-hull which I will locate in the transom next to the 
existing thru-hull for the Whale Gusher 10. The small pump will exit per the 
C design, into a tee fitting in the starboard cockpit drain.

Recent pictures in the blog.

Best,
Dave Godwin
1982 C 37 - Ronin
Reedville - Chesapeake Bay
Ronin’s Overdue Refit 
> On Apr 14, 2016, at 3:40 PM, Patrick Davin via CnC-List 
>  wrote:
> 
> I've been debating my bilge pump plan for a few months now, and having 
> trouble deciding. What have others here decided is sufficient pump capacity? 
> 
> I have two Rule 800s now and am considering upgrading one to an 1100 or 2000 
> gph, as a high water alarm. That will require upgrading the hose from 3/4" to 
> 1 1/8", and enlarging the thruhull at the toerail. One of the bilge hoses 
> runs through the stbd head (into the head cubbies) and the other runs through 
> the hanging locker fwd of the head. Upgrading will require enlarging some of 
> the hose holes in the boat's liner (below the cabin sole) probably, and of 
> course hole sawing a larger thru hull. So it's a good deal more work than 
> just replacing bilge pumps, their wiring, and adding a float switch + alarm. 
> 
> From Wally's page I know he installed a Rule 2000. 
> http://www.wbryant.com/StellaBoat/Projects/bilgepmp/bilgepmp.htm 
> 
> However it sounds like Wally's LF38 had his hoses run differently - to the 
> stern quarter - while mine are to stbd mid-ships. 
> 
> With two 800's I'm at the low end of the 1600-2000 gph capacity range 
> recommended by West Marine (and yes I've read all about how actual capacity 
> may be much lower, due to voltage drop, head pressure, etc). I've also heard 
> it doesn't make much sense to say that bigger boats need bigger bilge pumps - 
> a 20' boat will sink just as fast (or faster) with a 1.5" hole as a 38' one 
> will.
> 
> I'm more concerned with having the capacity to prevent the boat from sinking 
> at dock if say a 1.5" thruhull disintegrated somehow. Less concerned with 
> emergency pumping while onboard, because I'm not going far offshore and I 
> have a lot of emergency hole plugging options to try (putty, foam, wood 
> bungs, carrots, etc). 
> 
> -Patrick
> 1984 C Landfall 38
> Seattle, WA
> 
> 
> ___
> 
> This list is supported by the generous donations of our members. If you like 
> what we do, please help us pay for our costs by donating. All Contributions 
> are greatly appreciated!

___

This list is supported by the generous donations of our members. If you like 
what we do, please help us pay for our costs by donating. All Contributions are 
greatly appreciated!

Re: Stus-List Bilge pump capacity?

[Steve Thomas via CnC-List]

http://www.forespar.com/products/sta-plug.shtml

 Chuck Gilchrest via CnC-List <cnc-list@cnc-list.com> wrote: 
A Tru-Plug (orange pliable foamy cone shaped bung) and an Edson 18gpm manual 
pump on a board emergency pump are standard for most folks tackling offshore 
passagemaking.  If you have the room for the bigger Edson pump (30Gpm), that’s 
even better.  Keep in mind that once the water level gets above your batteries, 
having any high capacity Electric Bilge Pump won’t mean a thing.

Chuck Gilchrest

S/V Half Magic

1983 LF 35

Padanaram, MA

 

From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Josh Muckley 
via CnC-List
Sent: Thursday, April 14, 2016 4:21 PM
To: C List cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com> 
Cc: Josh Muckley <muckl...@gmail.com>
Subject: Re: Stus-List Bilge pump capacity?

 

You'll have a shockingly hard time keeping up with a 1.5 inch hole no matter 
what size bilge pump you have.  Plugging the hole is always better.  Its gonna 
sink if the seacock disintegrates while you're not there.

Josh Muckley
S/V Sea Hawk
1989 C 37+
Solomons, MD 

On Apr 14, 2016 3:41 PM, "Patrick Davin via CnC-List" <cnc-list@cnc-list.com 
<mailto:cnc-list@cnc-list.com> > wrote:

I've been debating my bilge pump plan for a few months now, and having trouble 
deciding. What have others here decided is sufficient pump capacity?  

 

I have two Rule 800s now and am considering upgrading one to an 1100 or 2000 
gph, as a high water alarm. That will require upgrading the hose from 3/4" to 1 
1/8", and enlarging the thruhull at the toerail. One of the bilge hoses runs 
through the stbd head (into the head cubbies) and the other runs through the 
hanging locker fwd of the head. Upgrading will require enlarging some of the 
hose holes in the boat's liner (below the cabin sole) probably, and of course 
hole sawing a larger thru hull. So it's a good deal more work than just 
replacing bilge pumps, their wiring, and adding a float switch + alarm. 

 

From Wally's page I know he installed a Rule 2000. 
http://www.wbryant.com/StellaBoat/Projects/bilgepmp/bilgepmp.htm

However it sounds like Wally's LF38 had his hoses run differently - to the 
stern quarter - while mine are to stbd mid-ships. 

 

With two 800's I'm at the low end of the 1600-2000 gph capacity range 
recommended by West Marine (and yes I've read all about how actual capacity may 
be much lower, due to voltage drop, head pressure, etc). I've also heard it 
doesn't make much sense to say that bigger boats need bigger bilge pumps - a 
20' boat will sink just as fast (or faster) with a 1.5" hole as a 38' one will.

 

I'm more concerned with having the capacity to prevent the boat from sinking at 
dock if say a 1.5" thruhull disintegrated somehow. Less concerned with 
emergency pumping while onboard, because I'm not going far offshore and I have 
a lot of emergency hole plugging options to try (putty, foam, wood bungs, 
carrots, etc). 

 

-Patrick

1984 C Landfall 38

Seattle, WA

 

 


___

This list is supported by the generous donations of our members. If you like 
what we do, please help us pay for our costs by donating. All Contributions are 
greatly appreciated!



___

This list is supported by the generous donations of our members. If you like 
what we do, please help us pay for our costs by donating. All Contributions are 
greatly appreciated!

Re: Stus-List Bilge pump capacity?

[Chuck Gilchrest via CnC-List]

A Tru-Plug (orange pliable foamy cone shaped bung) and an Edson 18gpm manual 
pump on a board emergency pump are standard for most folks tackling offshore 
passagemaking.  If you have the room for the bigger Edson pump (30Gpm), that’s 
even better.  Keep in mind that once the water level gets above your batteries, 
having any high capacity Electric Bilge Pump won’t mean a thing.

Chuck Gilchrest

S/V Half Magic

1983 LF 35

Padanaram, MA

 

From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Josh Muckley 
via CnC-List
Sent: Thursday, April 14, 2016 4:21 PM
To: C List cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com> 
Cc: Josh Muckley <muckl...@gmail.com>
Subject: Re: Stus-List Bilge pump capacity?

 

You'll have a shockingly hard time keeping up with a 1.5 inch hole no matter 
what size bilge pump you have.  Plugging the hole is always better.  Its gonna 
sink if the seacock disintegrates while you're not there.

Josh Muckley
S/V Sea Hawk
1989 C 37+
Solomons, MD 

On Apr 14, 2016 3:41 PM, "Patrick Davin via CnC-List" <cnc-list@cnc-list.com 
<mailto:cnc-list@cnc-list.com> > wrote:

I've been debating my bilge pump plan for a few months now, and having trouble 
deciding. What have others here decided is sufficient pump capacity?  

 

I have two Rule 800s now and am considering upgrading one to an 1100 or 2000 
gph, as a high water alarm. That will require upgrading the hose from 3/4" to 1 
1/8", and enlarging the thruhull at the toerail. One of the bilge hoses runs 
through the stbd head (into the head cubbies) and the other runs through the 
hanging locker fwd of the head. Upgrading will require enlarging some of the 
hose holes in the boat's liner (below the cabin sole) probably, and of course 
hole sawing a larger thru hull. So it's a good deal more work than just 
replacing bilge pumps, their wiring, and adding a float switch + alarm. 

 

>From Wally's page I know he installed a Rule 2000. 
>http://www.wbryant.com/StellaBoat/Projects/bilgepmp/bilgepmp.htm

However it sounds like Wally's LF38 had his hoses run differently - to the 
stern quarter - while mine are to stbd mid-ships. 

 

With two 800's I'm at the low end of the 1600-2000 gph capacity range 
recommended by West Marine (and yes I've read all about how actual capacity may 
be much lower, due to voltage drop, head pressure, etc). I've also heard it 
doesn't make much sense to say that bigger boats need bigger bilge pumps - a 
20' boat will sink just as fast (or faster) with a 1.5" hole as a 38' one will.

 

I'm more concerned with having the capacity to prevent the boat from sinking at 
dock if say a 1.5" thruhull disintegrated somehow. Less concerned with 
emergency pumping while onboard, because I'm not going far offshore and I have 
a lot of emergency hole plugging options to try (putty, foam, wood bungs, 
carrots, etc). 

 

-Patrick

1984 C Landfall 38

Seattle, WA

 

 


___

This list is supported by the generous donations of our members. If you like 
what we do, please help us pay for our costs by donating. All Contributions are 
greatly appreciated!

___

This list is supported by the generous donations of our members. If you like 
what we do, please help us pay for our costs by donating. All Contributions are 
greatly appreciated!

Re: Stus-List Bilge pump capacity?

[Josh Muckley via CnC-List]

You'll have a shockingly hard time keeping up with a 1.5 inch hole no
matter what size bilge pump you have.  Plugging the hole is always better.
Its gonna sink if the seacock disintegrates while you're not there.

Josh Muckley
S/V Sea Hawk
1989 C 37+
Solomons, MD
On Apr 14, 2016 3:41 PM, "Patrick Davin via CnC-List" 
wrote:

> I've been debating my bilge pump plan for a few months now, and having
> trouble deciding. What have others here decided is sufficient pump
> capacity?
>
> I have two Rule 800s now and am considering upgrading one to an 1100 or
> 2000 gph, as a high water alarm. That will require upgrading the hose from
> 3/4" to 1 1/8", and enlarging the thruhull at the toerail. One of the bilge
> hoses runs through the stbd head (into the head cubbies) and the other runs
> through the hanging locker fwd of the head. Upgrading will require
> enlarging some of the hose holes in the boat's liner (below the cabin sole)
> probably, and of course hole sawing a larger thru hull. So it's a good deal
> more work than just replacing bilge pumps, their wiring, and adding a float
> switch + alarm.
>
> From Wally's page I know he installed a Rule 2000.
> http://www.wbryant.com/StellaBoat/Projects/bilgepmp/bilgepmp.htm
> However it sounds like Wally's LF38 had his hoses run differently - to the
> stern quarter - while mine are to stbd mid-ships.
>
> With two 800's I'm at the low end of the 1600-2000 gph capacity range
> recommended by West Marine (and yes I've read all about how actual capacity
> may be much lower, due to voltage drop, head pressure, etc). I've also
> heard it doesn't make much sense to say that bigger boats need bigger bilge
> pumps - a 20' boat will sink just as fast (or faster) with a 1.5" hole as a
> 38' one will.
>
> I'm more concerned with having the capacity to prevent the boat from
> sinking at dock if say a 1.5" thruhull disintegrated somehow. Less
> concerned with emergency pumping while onboard, because I'm not going far
> offshore and I have a lot of emergency hole plugging options to try (putty,
> foam, wood bungs, carrots, etc).
>
> -Patrick
> 1984 C Landfall 38
> Seattle, WA
>
>
>
> ___
>
> This list is supported by the generous donations of our members. If you
> like what we do, please help us pay for our costs by donating. All
> Contributions are greatly appreciated!
>
>
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what we do, please help us pay for our costs by donating. All Contributions are 
greatly appreciated!

Re: Stus-List Bilge pump capacity?

[John Pennie via CnC-List]

Patrick:

I don't think anything will keep the boat afloat if a 1-1/2" thru hull 
disintegrated.  

I do understand your concern but given the difficulty have you considered 
adding a third pump slightly higher as an emergency pump?  As you will be 
running new plumbing anywhere that is convenient you can make it as big as you 
like.

John

Sent from my iPad

> On Apr 14, 2016, at 3:40 PM, Patrick Davin via CnC-List 
>  wrote:
> 
> I've been debating my bilge pump plan for a few months now, and having 
> trouble deciding. What have others here decided is sufficient pump capacity?  
> 
> I have two Rule 800s now and am considering upgrading one to an 1100 or 2000 
> gph, as a high water alarm. That will require upgrading the hose from 3/4" to 
> 1 1/8", and enlarging the thruhull at the toerail. One of the bilge hoses 
> runs through the stbd head (into the head cubbies) and the other runs through 
> the hanging locker fwd of the head. Upgrading will require enlarging some of 
> the hose holes in the boat's liner (below the cabin sole) probably, and of 
> course hole sawing a larger thru hull. So it's a good deal more work than 
> just replacing bilge pumps, their wiring, and adding a float switch + alarm. 
> 
> From Wally's page I know he installed a Rule 2000. 
> http://www.wbryant.com/StellaBoat/Projects/bilgepmp/bilgepmp.htm
> However it sounds like Wally's LF38 had his hoses run differently - to the 
> stern quarter - while mine are to stbd mid-ships. 
> 
> With two 800's I'm at the low end of the 1600-2000 gph capacity range 
> recommended by West Marine (and yes I've read all about how actual capacity 
> may be much lower, due to voltage drop, head pressure, etc). I've also heard 
> it doesn't make much sense to say that bigger boats need bigger bilge pumps - 
> a 20' boat will sink just as fast (or faster) with a 1.5" hole as a 38' one 
> will.
> 
> I'm more concerned with having the capacity to prevent the boat from sinking 
> at dock if say a 1.5" thruhull disintegrated somehow. Less concerned with 
> emergency pumping while onboard, because I'm not going far offshore and I 
> have a lot of emergency hole plugging options to try (putty, foam, wood 
> bungs, carrots, etc). 
> 
> -Patrick
> 1984 C Landfall 38
> Seattle, WA
> 
> 
> ___
> 
> This list is supported by the generous donations of our members. If you like 
> what we do, please help us pay for our costs by donating. All Contributions 
> are greatly appreciated!
___

This list is supported by the generous donations of our members. If you like 
what we do, please help us pay for our costs by donating. All Contributions are 
greatly appreciated!

Re: Stus-List Bilge pump capacity?

[Patrick Davin via CnC-List]

Yeah, either carrots or potatoes. :)  This is an idea from Yachting
Monthly's Crash Test Boat videos:
https://www.youtube.com/watch?v=H5PDuXvqL7c
https://www.youtube.com/watch?v=eUg3TUmnQBs

On Thu, Apr 14, 2016 at 1:10 PM, Robert Boyer  wrote:

> Carrots  Funny!
>
> Bob Boyer
> S/V Rainy Days (1983 C Landfall 38 - Hull #230)
> Blog: dainyrays.blogspot.com
> Email: dainyr...@icloud.com
> Annapolis, MD (presently in Baltimore)
>
>
___

This list is supported by the generous donations of our members. If you like 
what we do, please help us pay for our costs by donating. All Contributions are 
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Re: Stus-List Bilge pump capacity?

[Robert Boyer via CnC-List]

Carrots  Funny!

Bob Boyer
S/V Rainy Days (1983 C Landfall 38 - Hull #230)
Blog: dainyrays.blogspot.com
Email: dainyr...@icloud.com
Annapolis, MD (presently in Baltimore)

> On Apr 14, 2016, at 3:40 PM, Patrick Davin via CnC-List 
>  wrote:
> 
> I've been debating my bilge pump plan for a few months now, and having 
> trouble deciding. What have others here decided is sufficient pump capacity?  
> 
> I have two Rule 800s now and am considering upgrading one to an 1100 or 2000 
> gph, as a high water alarm. That will require upgrading the hose from 3/4" to 
> 1 1/8", and enlarging the thruhull at the toerail. One of the bilge hoses 
> runs through the stbd head (into the head cubbies) and the other runs through 
> the hanging locker fwd of the head. Upgrading will require enlarging some of 
> the hose holes in the boat's liner (below the cabin sole) probably, and of 
> course hole sawing a larger thru hull. So it's a good deal more work than 
> just replacing bilge pumps, their wiring, and adding a float switch + alarm. 
> 
> From Wally's page I know he installed a Rule 2000. 
> http://www.wbryant.com/StellaBoat/Projects/bilgepmp/bilgepmp.htm
> However it sounds like Wally's LF38 had his hoses run differently - to the 
> stern quarter - while mine are to stbd mid-ships. 
> 
> With two 800's I'm at the low end of the 1600-2000 gph capacity range 
> recommended by West Marine (and yes I've read all about how actual capacity 
> may be much lower, due to voltage drop, head pressure, etc). I've also heard 
> it doesn't make much sense to say that bigger boats need bigger bilge pumps - 
> a 20' boat will sink just as fast (or faster) with a 1.5" hole as a 38' one 
> will.
> 
> I'm more concerned with having the capacity to prevent the boat from sinking 
> at dock if say a 1.5" thruhull disintegrated somehow. Less concerned with 
> emergency pumping while onboard, because I'm not going far offshore and I 
> have a lot of emergency hole plugging options to try (putty, foam, wood 
> bungs, carrots, etc). 
> 
> -Patrick
> 1984 C Landfall 38
> Seattle, WA
> 
> 
> ___
> 
> This list is supported by the generous donations of our members. If you like 
> what we do, please help us pay for our costs by donating. All Contributions 
> are greatly appreciated!
___

This list is supported by the generous donations of our members. If you like 
what we do, please help us pay for our costs by donating. All Contributions are 
greatly appreciated!

Stus-List Bilge pump capacity?

[Patrick Davin via CnC-List]

I've been debating my bilge pump plan for a few months now, and having
trouble deciding. What have others here decided is sufficient pump
capacity?

I have two Rule 800s now and am considering upgrading one to an 1100 or
2000 gph, as a high water alarm. That will require upgrading the hose from
3/4" to 1 1/8", and enlarging the thruhull at the toerail. One of the bilge
hoses runs through the stbd head (into the head cubbies) and the other runs
through the hanging locker fwd of the head. Upgrading will require
enlarging some of the hose holes in the boat's liner (below the cabin sole)
probably, and of course hole sawing a larger thru hull. So it's a good deal
more work than just replacing bilge pumps, their wiring, and adding a float
switch + alarm.

>From Wally's page I know he installed a Rule 2000.
http://www.wbryant.com/StellaBoat/Projects/bilgepmp/bilgepmp.htm
However it sounds like Wally's LF38 had his hoses run differently - to the
stern quarter - while mine are to stbd mid-ships.

With two 800's I'm at the low end of the 1600-2000 gph capacity range
recommended by West Marine (and yes I've read all about how actual capacity
may be much lower, due to voltage drop, head pressure, etc). I've also
heard it doesn't make much sense to say that bigger boats need bigger bilge
pumps - a 20' boat will sink just as fast (or faster) with a 1.5" hole as a
38' one will.

I'm more concerned with having the capacity to prevent the boat from
sinking at dock if say a 1.5" thruhull disintegrated somehow. Less
concerned with emergency pumping while onboard, because I'm not going far
offshore and I have a lot of emergency hole plugging options to try (putty,
foam, wood bungs, carrots, etc).

-Patrick
1984 C Landfall 38
Seattle, WA
___

This list is supported by the generous donations of our members. If you like 
what we do, please help us pay for our costs by donating. All Contributions are 
greatly appreciated!