Hybrid Car – More Fun with Less Gas

Solar water pumping - Page 2

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Posted by Winston on May 12, 2009, 6:32 am
 
Morris Dovey wrote:

(...)


When I were a yout, I could pedal out 70 W for a good half hour.
Then I was *very tired*.

Looks like a 1/2 horse electric motor on that pump.
How long would I have lasted at 373 W?

Not long.  :)

--Winston

--

Don't *faff*, dear.

Posted by sspence on May 13, 2009, 3:04 pm
 

A 1/8 hp motor works ok on this pump with a 12' static water level. I
have pedaled it with ease.

Posted by Winston on May 14, 2009, 5:59 am
 sspence wrote:

(...)


93W? That's much more reasonable.

--Winston

--

Don't *faff*, dear.

Posted by Jim Wilkins on May 12, 2009, 10:24 am
 
Have you looked into do-it-yourself replacements for unavailable
rubber seals and valves?

After school I worked in a leather factory that made machinery belts
and pump parts. Pump cup seals were pressed in heated dies that would
be easy to make. Flap valve dies were more complicated but you could
clamp the leather to a sheet-metal template and cut it out with a
razor knife.

I've made rubber parts in home-made dies pressed together in a bench
vise and heated with a torch until solder blobs on the outside melted.
The rubber was from windshield washer hose.

jsw

Posted by Ulysses on May 12, 2009, 2:32 pm
 

http://www.green-trust.org/wordpress/2009/05/11/energy-efficient-water-pumps/

I looked in to getting a DC well pump but after reading about them decided
to just keep my 240 VAC pump.  For backup the DC could be ran from a car or
possibly the 12 VDC output of a small generator but it sounded like a lot
more maintenance for the DC type.  I take it you don't have an elevated
storage tank?  I guess it would be rough to have to start your car every
time someone wanted to take a shower or flush the toilet.



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