Posts Tagged ‘pump’

DIY Electronic Bilge Pump Switch

DIY Electronic Bilge Pump Switch

Electronic bilge pump switch

Every boat needs a bilge pump, but a bilge pump does not make any use if you do not have Electronic Bilge Pump Switch installed in your boat. This is uually the case with small and older boats. If you buy a new Electronic Bilge Pump Switch today it will cost you quite a bit compared to how much you will spend to make a Electronic Bilge Pump Switch yourself at home.

A while ago I was contacted by the owner of He published a simple tutorial to make your own Electronic Bilge Pump Switch and asked me to publish it on my blog. I liked the idea, becouse it is a very innovative product and most of DIY enthusiasts will know how to build it. In fact it is very simple so I am sure anyone can build it.

Making a Electronic Bilge Pump Switch

Over the years, I have installed several submerged float switches in the bilge of my boat. They’re supposed to run the bilge pump when the level of water in the bilge exceeds a certain level and then stop the pump after the water level is lower. They usually work well for the first year or two but inevitably fail. Sometimes they fail simply because they’re submerged in water constantly and they had a very small leak. Other times they failed probably because I left them underwater over the winter and they were frozen.

To improve upon this I wanted to switch, pun intended, from a submerged mechanical switch to a solid state, adjustable switch. I wanted to be able to remove as much of the switch from the water, hoping to extend its useful life. Of course there are a few commercial switches available but they’re not always customizable. Also, buying a packaged switch wouldn’t teach me anything about the circuitry required or give me the intimate knowledge on how they work.

Read the whole article at manialabs blog - Electronic Bilge Pump Switch - or download the Electronic bilge pump switch schematics.

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Be the first to comment - What do you think?  Posted by admin - August 22, 2012 at 19:31

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DIY PVC Boat Blige Pump

DIY PVC Boat Blige PumpThe most realistic fact about DIY Cheap Boatbuilding goes like this: “If you build your boat from cheap material you should consider a blige pump!”

I did a google search on blige pumps and there are a lot of different products out there. I found electrical and manual pumps. Then I did a search for DIY blige pump to see if anyone has ever try and build it himself. I have a friend who did but I never got to see the finished version. Anyway I found this cool website that offers a DIY guide for building a homemade PVC blige pump for your boat.

I like it when I manage to build something with my bare hands so I  decided to try to build a DIY PVC Blige Pump. I borrowed some pictures from the source site of the article, that is from Bruce C. Anderson ‘s site.

Read more…

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1 comment - What do you think?  Posted by admin - December 9, 2010 at 01:59

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DIY Homemade Vacuum Bagging Pump

DIY Homemade Vacuum Bagging PumpIf you read my DIY Fiberglass Vacuum Bagging For Boat Building article, then the first thing you will need for the vacuum bagging process is a vacuum pump. I will show you here how you can build one for as little as 20 EUR.


This vacuum pump was designed by James Redmon and Tim Cook and they call it the “Cheap Little Sucker”. This pump was so effective that EAI now supplys the plans with the Berkut kit. It is a very simple design and it is made of parts that are cheap. The big round black thing is a freon compressor off of a cooler.  You can find those in old coolers in the dump yard. Just be sure that it is in a working state. You can also use an automobile A/C compressor and an electric motor to power it.


The opposite side of a compressor is a vacuum. We then put a compression fitting, a couple of ‘T fittings, a bleeder valve, and an automotive vacuum guage on the vacuum side of the compressor. You then have to wire the whole thing to a switch and ther you have it! A nice homemade vacuum pump that works great! It produces very little noise and heat and it is capable of pulling 25+ inches of vacuum. That is all you need for your DIY fiberglass vacuum projects. For detailed instructions read the  Cheap Little Sucker article or download the DIY Vacuum Pump PDF file. Read more…

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1 comment - What do you think?  Posted by admin - December 2, 2010 at 15:41

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