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I will describe how to build a small motored water pump with a travel jar instead of the accepted bottle cap method. This will bring a number of benefits, including easy accessibility for repairs and adjustments of the internal fan. It's relatively cheap, functions well with vinyl tubing and, err... looks great.  


 
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Step 1: Materials

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Materials need:

-Travel Jar of your choice of color (Bought @Walmart)
- 3v to 5v dc motor from disk drive, radio shack, hobby lobby, electric sharpener, toy, etc.
    -make sure it has a gear
- glue gun
- 3 to 5 v dc output adapter such as a cell phone charger.
- plastic strips for building a fan rotor. 
- Tubes for water inlet and outlet, i.e. from a pen. 

Drilling/cutting tools for plastic:

- drill (or some other sharp metallic tube)
- micro torch or other heat source
- scissors 
hkortus says: Jun 4, 2013. 4:12 AM
That isa super cool!!!
Pyrophoric (author) in reply to hkortusJun 4, 2013. 2:11 PM
Thank you hkortus, I'm glad you like my instructables!
minijc says: Jun 7, 2012. 7:18 AM
could use it for going camping if your tent floods
kushalverma says: Jan 6, 2012. 4:01 AM
what basically WD-40 is??? Is it a liquid spray or something like gel?????
Pyrophoric (author) in reply to kushalvermaJan 6, 2012. 4:19 PM
It's a liquid spray can that has many applications, but mainly used for lubrication. Also protects from rust.
kushalverma says: Jan 2, 2012. 8:07 AM
but how have you applied any solvent or anything between the motor shaft and blades to make it leakprofed????
Pyrophoric (author) in reply to kushalvermaJan 5, 2012. 5:35 PM
I applied WD-40, but it's not necessary.
kushalverma says: Dec 21, 2011. 5:42 AM
is the shaft of the motor leak proofed with the moving blades?????
Pyrophoric (author) in reply to kushalvermaDec 23, 2011. 6:57 AM
Yeah, basically. Mine still works!
embochner says: Aug 19, 2011. 7:10 AM
great stuff- is there a way to waterproof the motor to make it splash safe?
Pyrophoric (author) in reply to embochnerAug 19, 2011. 11:07 AM
Thanks, you just do what Jimmy said and also spray some WD-40 on the exposed shaft perforation before use.
heathbar64 in reply to PyrophoricDec 22, 2011. 3:48 PM
I once took a hobby mootor and sealed the vents with glue and ran it completely under water. it sat there and ran perfectly in a jar of water.
Jimmy Proton in reply to embochnerAug 19, 2011. 10:24 AM
You could just cover it in hot glue as long as you don't get any inside.
tzq33tdq says: Aug 25, 2011. 1:08 AM
can you send me a link to print this instructable out???
KevinAlien26 says: Aug 19, 2011. 11:23 AM
Hey man great 'ible I was helping my girlfriends mom with transferring gas from her transmission broken truck to her out of gas van and it got to thinking of ways I could pump water. (I wouldn't risk has since there can always be a problem with electricity).

I had a few questions.
1) can this be done using a larger jar Mainly to fit a larger motor and fan.
2) if so could I just use the fan blades off an old computer fan?
ngunarathne in reply to KevinAlien26Aug 21, 2011. 9:48 AM
You could pump petrol with it without the risk of fire if you immerse the whole thing in some sort of insulating oil (like baby oil) and draw out just the two lines.
KevinAlien26 in reply to ngunarathneAug 21, 2011. 4:52 PM
Hmm sounds like a good idea. I was also thinking if using the motor farther from the actual chamber would work. Like adding a thing metal rod from the fan inside the pump, to the motor some few feet away.
Pyrophoric (author) in reply to KevinAlien26Aug 19, 2011. 11:35 AM
1) Theoretically, it should work. I have never tried something as large.
2) well, rectangular blades work best, but you could use the fan blades as long as they're cut off and then glued sideways like in my motor.

Thanks
ngunarathne says: Aug 21, 2011. 10:52 AM
There's this awesome cog wheel in diskus inhalers ( http://www.google.lk/imgres?q=diskus+inhaler&um=1&hl=en&biw=1280&bih=629&tbm=isch&tbnid=7nIIqMnzDhQgPM:&imgrefurl=http://www.securingpharma.com/40/articles/527.php&docid=Pv-Ayh18LJuO0M&w=596&h=400&ei=z0RRTsnyBMzMrQfY7KyJDw&zoom=1 ) that you can use as the turbine for this. I'll upload an image later if I find time.
afetic says: Aug 19, 2011. 7:53 AM
For what i can use this ?
Pyrophoric (author) in reply to afeticAug 19, 2011. 11:08 AM
Practically anything requiring running water. See the last step under applications.
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