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Author Topic: Looking for cheap liquid pump  (Read 1247 times)

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Offline Razor ConceptsTopic starter

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Looking for cheap liquid pump
« on: July 31, 2010, 09:04:19 PM »
I'm looking for a small and cheap electric water/liquid pump. From my RC background the cheapest I could find is this:
http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXVZ40&P=FR

Is there any other place I could find small and cheap pumps?

Offline amando96

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Re: Looking for cheap liquid pump
« Reply #1 on: August 01, 2010, 05:41:14 AM »
If you don't want to wait for a delivery go to a fish tank shop, they should have a line of cheap pumps.
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Offline dunk

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Re: Looking for cheap liquid pump
« Reply #2 on: August 01, 2010, 09:21:46 AM »
car windscreen washer pump?

dunk.

Offline blackbeard

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Re: Looking for cheap liquid pump
« Reply #3 on: August 01, 2010, 09:39:49 AM »
car windscreen washer pump?

dunk.

although dirt cheep don't expect much out of these. they will die after a minute of continuous use.
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Offline Soeren

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Re: Looking for cheap liquid pump
« Reply #4 on: August 01, 2010, 10:38:50 PM »
Hi,

car windscreen washer pump?

dunk.

although dirt cheep don't expect much out of these. they will die after a minute of continuous use.
If you buy  them "dirt cheap", perhaps you have your explanation  ;)

A windscreen washer pump was my first thought as well, as I have had two of them going for years (15..20 years actually), with much more than a minute at each run.
One bought from new (one of the better brands), the other ripped out of a Fiat going to the slaughter house.

Just don't feed them a higher voltage than designed for and if possible, go lower, as they are a bit noisy at rated voltage.
Regards,
Søren

A rather fast and fairly heavy robot with quite large wheels needs what? A lot of power?
Please remember...
Engineering is based on numbers - not adjectives

Offline Soeren

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Re: Looking for cheap liquid pump
« Reply #5 on: August 01, 2010, 10:44:30 PM »
Hi,

I'm looking for a small and cheap electric water/liquid pump.
What liquid and what volume/time and what voltage?

I have (somewhere) a small 8V (IIRC) AC pump that pumps in a very odd way - a spring is set to vibrate at the AC frequency in the core of a kind of solenoid.
Not the strongest flow, but amazingly silent for the volume it can muster.
Don't know if they are available these days, I got it way back in a hazy past.
Regards,
Søren

A rather fast and fairly heavy robot with quite large wheels needs what? A lot of power?
Please remember...
Engineering is based on numbers - not adjectives

Offline Razor ConceptsTopic starter

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Re: Looking for cheap liquid pump
« Reply #6 on: August 04, 2010, 10:22:16 AM »
Thanks for the suggestions! I just went ahead with the "top fueler" thing, I want to see how the DC pump works. I looked at the inside of a AC aquarium pump and its the same mechanism that Soeren described... too bad the pump was for air and not liquids.

Offline blackbeard

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Re: Looking for cheap liquid pump
« Reply #7 on: August 04, 2010, 03:54:49 PM »
Hi,

car windscreen washer pump?

dunk.

although dirt cheep don't expect much out of these. they will die after a minute of continuous use.
If you buy  them "dirt cheap", perhaps you have your explanation  ;)

A windscreen washer pump was my first thought as well, as I have had two of them going for years (15..20 years actually), with much more than a minute at each run.
One bought from new (one of the better brands), the other ripped out of a Fiat going to the slaughter house.

Just don't feed them a higher voltage than designed for and if possible, go lower, as they are a bit noisy at rated voltage.


to be fair i was using a wiper pump from a 1990's minivan to power a liquid cooling system for my computer and powering it from the psu.
"sure, you can test your combat robot on kittens... But all your going to do is make kitten juice"

First step: Build androids with AI
Next step: Give them vaginas

 


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