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Easy stirrup pump

Come find a how-to on how to do something, or come write your own for other people.
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Unread postAuthor: john bunsenburner » Thu Nov 27, 2008 11:41 am

Ask the gas dealer in your area, mine has anything from tubing for 10 000++ psi to really good valves for the tanky, im not sure about sharders but it could be ordered from there i guess.
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Unread postAuthor: Floyd » Thu Nov 27, 2008 11:46 am

Thanks, but I was looking more for a website, mainly for the chuck, if you can order hose from the same place thats just a little bonus.
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Unread postAuthor: john bunsenburner » Thu Nov 27, 2008 12:28 pm

oh ok sorry then, if you find something let me know, I guess internet is cheeper than gas dealer...
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Unread postAuthor: Gippeto » Thu Nov 27, 2008 2:27 pm

Something like this? :)

http://www.aircraftspruce.com/catalog/l ... seneck.php

Schrader USA Part# 6116

Rated to 3000psi. :twisted:
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Unread postAuthor: Floyd » Thu Nov 27, 2008 8:13 pm

Yes, that is what I was looking for.

It just screws on to the valve right?

Edit: How does it connect to the hose?
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Unread postAuthor: Gippeto » Thu Nov 27, 2008 9:10 pm

The fitting has 1/8" fnpt on the other end.
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Unread postAuthor: spudtyrrant » Fri Jul 24, 2009 4:29 pm

well i built the pump thanks to gippeto's how-to and man does it work.

I followed all the steps except instead of using a drill press i used a bench grinder and a hand drill spinning in opposite directions and instead of fiberglass resin i pack epoxy putty in the tube around the all thread with the end of a bolt.

i was asked to post this to show how easy it really is. If i can do it the you can do it

here she is :
the whole pump:
Image
pumping p.o.v.
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fitting on the bottom of the pump(i made it bigger so i would have somewhere to place my foot)
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gauge at 415psi(told you it really works lol i let i sit over night at 400 and it didn't drop at all)
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Unread postAuthor: Gippeto » Fri Jul 24, 2009 7:07 pm

Nicely done! :D

I would suggest going to a steel handle in light of Far Cry's incident where the (plastic) pump handle broke, allowing the pump shaft to pierce his hand. :(

The pvc handle on my pump has not given trouble, it's just for an added safety factor.

I've changed mine already.

I think I'll add a note to that effect at the beginning as well. :idea:
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Unread postAuthor: spudtyrrant » Fri Jul 24, 2009 7:49 pm

Gippeto wrote:Nicely done! :D

I would suggest going to a steel handle in light of Far Cry's incident where the (plastic) pump handle broke, allowing the pump shaft to pierce his hand. :(

The pvc handle on my pump has not given trouble, it's just for an added safety factor.

I've changed mine already.

I think I'll add a note to that effect at the beginning as well. :idea:

its filled with epoxy gippeto i remembered farcry's incident and didn't want the same to happen to me. i will change to an aluminum pump handle soon i have some 1 inch aluminum stock lying around but for the moment it seems to be holding up pretty well. :wink:
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Unread postAuthor: alex_esa » Thu Apr 08, 2010 3:06 pm

Good job, do you have a picture of your finished piston?

Where did you have used the 1/2" washer?

Thanks.
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Unread postAuthor: Gippeto » Thu Apr 08, 2010 11:06 pm

It's been awhile... I think the 1/2" washer was used as the base to support the molding tube when pouring the piston body.
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Unread postAuthor: LovableAirGuns » Sat Apr 09, 2011 5:00 am

hey would I be able to use hot glue instead of low viscosity epoxy for the piston?
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Unread postAuthor: saefroch » Sat Apr 09, 2011 9:13 am

Possibly, at very low pressures. If possible, go with an all-metal construction, like I did here. I'll be updating the thread to reflect the changes I've made to the pump, hopefully soon.

Updated :)
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Last edited by saefroch on Sat Apr 09, 2011 9:36 am, edited 1 time in total.
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Unread postAuthor: Gippeto » Sat Apr 09, 2011 9:22 am

I highly doubt that hot glue would last long enough to make it worth the trouble. Use the epoxy (which is still good in my pump)...or all metal as suggested.
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Unread postAuthor: mark.f » Sat Apr 09, 2011 9:30 am

I think what a lot of people don't realize is the amount of heat generated at the bottom of the pump. A hot glue piston would probably melt before too long.

I used epoxy in version one of my pump to stop the pump head from exiting the bottom of the copper tubing, and it melted into sticky flake during the first couple of uses. I eventually just lengthened the piston at the bottom to do the same thing.
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