Bilge questions - Page 2 - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance
 Not a Member? 
  #11  
Old 08-20-2013
azguy's Avatar
Senior Member
 
Join Date: Jul 2012
Location: Scottsdale
Posts: 544
Thanks: 0
Thanked 14 Times in 14 Posts
Rep Power: 3
azguy is on a distinguished road
Re: Bilge questions

Is your discharge hose much higher then the pump...?
Reply With Quote Quick reply to this message Share with Facebook
  #12  
Old 08-20-2013
Senior Member
 
Join Date: Jun 2007
Location: Old Saybrook
Posts: 303
Thanks: 1
Thanked 3 Times in 3 Posts
Rep Power: 8
justified is on a distinguished road
Re: Bilge questions

IMHO I would not suggest installing a back flow or check valve. I would suggest that you put in a riser loop the shortest distance from the pump and bring it above the level of discharge, that will minimize the amount of water coming back into the bilge. It will also help prevent any siphoning back thru the thru hull depending on its location.
Reply With Quote Quick reply to this message Share with Facebook
  #13  
Old 08-20-2013
katsailor's Avatar
Fresh water refugee
 
Join Date: Jan 2013
Location: Southport, NC
Posts: 160
Thanks: 6
Thanked 1 Time in 1 Post
Rep Power: 2
katsailor is on a distinguished road
Re: Bilge questions

Downsizing the hose diameter decreases the volume of bilge water the bilge pump can pump. Rerouting the hose to minimize drainage and setting the float switch on a higher elevation than the bilge pump is one of several solutions.

Riser loops should be installed at an elevation higher than the waterline with the vessel heeled to prevent siphoning.
__________________
Experience teaches us things we would rather not know.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
S/V Shakti '81 Offshore Cat Ketch 33'
Reply With Quote Quick reply to this message Share with Facebook
  #14  
Old 08-20-2013
rbyham's Avatar
Senior Member
 
Join Date: Dec 2012
Posts: 396
Thanks: 0
Thanked 8 Times in 7 Posts
Rep Power: 2
rbyham is on a distinguished road
Re: Bilge questions

Thanks all.. the input is helpful. I was wondering about the fining. I am just back from a week away where my pump faithfully handled the higher than normal rainfall. So there is sheen :-( I now have the sheets and they are down in the bilge. The water level after the pump works is quite low, maybe an inch left in back one half of bilge. The pump is separate from the switch. They are about 6" apart but in different bilge compartments. I have one hose running to the thru hull which is at least a foot above water line on starboard aft quarter. This line is dedicated to the bilge pump and not connected to cockpit scupper thru hulls. But there is a manual bilge pump which is accessed from the cockpit and ties in to same hose as is used by bilge pump. Does that make sense? If after running the automatic pump, I also give the manual about 5 more pumps, the water level drops to near zero turning off the bilge pump switch at least until it rains heavily again.

The thought of lifting the bilge pump switch is intriguing. The problem does lie in a hose that retains a significant amount of bilge "water" letting it run back in. SO if I can reposition the switch do I raise or lower it? :-)

Also, in terms of the soaking pads, I just crammed a bunch of them down in what water was left in the bilge. They have soaked overnight. DO I now fish them out for proper disposal or just leave pads down in there? I do want to get back to my nice clean bilge which is what I had before I stupidly missed the filling port when changing oil on my A4. Wont make that mistake again.
Reply With Quote Quick reply to this message Share with Facebook
  #15  
Old 08-20-2013
katsailor's Avatar
Fresh water refugee
 
Join Date: Jan 2013
Location: Southport, NC
Posts: 160
Thanks: 6
Thanked 1 Time in 1 Post
Rep Power: 2
katsailor is on a distinguished road
Re: Bilge questions

Good question about higher or lower.
If you mount it lower you could damage the pump because it will continue to run after you lose suction.
If you mount it higher, the water will still run down after the pump shuts off, but it will be at a higher level than before.
You could leave it alone and just use the on/off/automatic switch to suck the last of the water out.

I had heard the older wooden boat sailors say a dry bilge is the sign of a sick mind.

As part of my refit I mounted my new bilge pump and float switch on a lead plate so i can lift the pump and switch assembly out for servicing. I recently tried one of the new non-float switch automatic types but it kept me awake because it comes on and test runs every five minutes.
__________________
Experience teaches us things we would rather not know.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
S/V Shakti '81 Offshore Cat Ketch 33'
Reply With Quote Quick reply to this message Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Adding automatic bilge pump to manual bilge pump FirstCandC Gear & Maintenance 13 04-03-2013 09:59 AM
Installing automatic bilge pump in series with diaphram bilge pump... sweetdreamyamaha Gear & Maintenance 6 11-07-2009 12:36 PM
Shallow Bilge, Bilge Pump Switch labestia Gear & Maintenance 1 07-10-2009 03:40 PM
Bilge pump mounting / Johnson Ultima questions jarcher Gear & Maintenance 4 05-04-2009 09:39 PM
Bilge Pump Hose Placement Questions BillOfCapeCod Gear & Maintenance 17 02-20-2009 10:57 AM


All times are GMT -4. The time now is 06:38 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.