Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 04-05-2009, 19:31   #1
Registered User

Join Date: Jul 2008
Location: New York, NY
Boat: Beneteau First 375
Posts: 77
Custom Automatic Bilge Pump for Dinghy

I'm tired of pumping out the rainwater from my inflatable dinghy everytime I want to use it to get to my sailboat mooring. I thought I'd build an automatic bilge pump and leave it in the dinghy permanently. If the pump takes care of most of the rainwater, the sun will take care of the rest, drying out the dingy by the time I'm ready to use it.

I've already purchased a small Sahara automatic bilge pump (500 gph, 1.2 amps). I've also found a site that sells small sealed AGM batteries for jet skis. PWC (Personal Watercraft) Battery - sealed AGM batteries. They have several manufacturers and batteries of every size starting with 4ah and going up. I thought I'd put both pump and battery into a plastic box, drill a hole in the bottom side of the box so water can get into the bilge pump, and run a hose from the pump outlet to up and over the transom.

Does anyone see any problems with this setup, either as far as effectiveness or safety? What size battery do I need? Should I also get a very small solar panel to put on the top of the box to charge the battery or is there a way I can charge the battery from my sailboat?

Joe500 is offline   Reply With Quote
Old 04-05-2009, 19:56   #2
Moderator Emeritus
Pblais's Avatar

Join Date: Mar 2003
Location: Hayes, VA
Boat: Gozzard 36
Posts: 8,700
Images: 15
Send a message via Skype™ to Pblais
Can't you leave the dinghy on land? It's not an impossible problem but it isn't easy to assure you can have an automatic pump on a dinghy in the water without a cover. Then do make covers for inflatables.

Paul Blais
s/v Bright Eyes Gozzard 36
37 15.7 N 76 28.9 W
Pblais is offline   Reply With Quote
Old 04-05-2009, 21:33   #3
Registered User
tager's Avatar

Join Date: Apr 2009
Location: Vashon, WA
Boat: Haida 26', 18' Sea Kayak, 15' kayak, 6.5' skiff, shorts
Posts: 837
KISS and flip the dinghy over
tager is offline   Reply With Quote
Old 05-05-2009, 05:11   #4
Registered User
markpj23's Avatar

Join Date: Nov 2005
Location: Black Hills, SD
Boat: Now Boatless
Posts: 1,148
Images: 47
Use an in-line pump instead of a bilge pump. That way you can run a suction hose to the plug opening / bilge pocket instead of having the entire pump sit on the floor. Use an electronic bilge switch as they are smaller and won't get damaged.

That way you can mount the pump higher on the transom where it won't get kicked. All that would be potentially underfoot is the suction hose and the electronic bilge float switch.

An unconventional idea ..... but not so far fetched.
markpj23 is offline   Reply With Quote

bilge, bilge pump

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Which Bilge Pump Switch Do You Like ? over40pirate Plumbing Systems and Fixtures 33 12-04-2012 16:01
Another Bilge Pump Thread cal40john Plumbing Systems and Fixtures 23 18-07-2010 17:38
Backflow from Bilge Pump KevinE Construction, Maintenance & Refit 16 17-07-2009 14:13
Automatic Bilge Pumps niteflite1287 Plumbing Systems and Fixtures 6 24-11-2008 22:55
Bilge Pump Replacement kirby Construction, Maintenance & Refit 20 04-12-2005 17:53

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 04:37.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.