Easy 200psi... er make that 400psi stirrup pump

[Maniac]

Get a few $2 wallmart pumps and tear them apart and find the one you need tats how i get mine.

[Pete Zaria]

PCGuy makes the final call but it gets the green light from me.

When you write up the how-to, just make sure to include a disclaimer such as this:

"The author of these plans & the members, staff and owner of SpudFiles take absolutely no responsibility, legal, financial, moral or otherwise, for anything you do with the following information and any harm it may lead to. By reading further, you hereby release the author & members, staff and owner of SpudFiles of any and all responsibility." etc... so that if someone injures themselves, we don't get sued

Looking forward to seeing the plans.

Peace,
Pete Zaria.

[Brian the brain]

This has inspired me to make a new front teeth remover!

Actually it doesn´t work....I STILL GOT THEM!!

The last one was `safe`up to 79.9 bar..that´s...a LOT of PSI

The checkvalve failed at 80, almost removing my front teeth with the handle.


The new one gets around 400 easily, wich is as high as I´m willing to go..

Thanks again for the inspiration!

[Gippeto]

Great!

Who's your dentist? I'll send HIM a bill.

[Antonio]

I am planning to pump up a co2 tank to 50-60atm. I am ganna buy a tippmann 98, I found out that at this pressure u could get 50-60 shots out of a tank for free:) Would you say this is possible with such a pump?

[DYI]

400 bar?

What diameter is the pump tube, and what material is it made of? Can it put out enough air to make it useful for filling launchers?

[Mitchza89]

Not quite mate It's 400psi, which is about 27 bar .

Edit:...*feels like a knob....* I just saw BTB's post about the 400bar I thought you were talking about the original pump.... Sorry DYI...

[Gippeto]

Don't feel like a knob, BTB meant psi (400Bar ~ 5800psi NOBODY can put that much into a practical hand pump)

I believe DYI was making a joke.

Ant, it could be done with 1/2" or smaller copper for the tube.

It would require an awful lot of work for 50-60 shots though.

The pumping effort with 1/2" type M (.569" id.) would be 84.5-102Kg

This is still within the strength limits of the materials IF you use 95-5 TIn-antimony solder. The check valve I used would have to be modified.

A very good resource for copper;

http://www.copper.org/resources/pub_lis ... ndbook.pdf

[Antonio]

Don't feel like a knob, BTB meant psi (400Bar ~ 5800psi NOBODY can put that much into a practical hand pump)

I believe DYI was making a joke.

Ant, it could be done with 1/2" or smaller copper for the tube.

It would require an awful lot of work for 50-60 shots though.

The pumping effort with 1/2" type M (.569" id.) would be 84.5-102Kg

This is still within the strength limits of the materials IF you use 95-5 TIn-antimony solder. The check valve I used would have to be modified.

A very good resource for copper;

http://www.copper.org/resources/pub_lis ... ndbook.pdf

Hey, thnx for the handbook! Should help me out as these high pressures can be very lethal! I found out that an average paintball gun needs about 1Ci (cubic inch) of air per shot. So yeah it should be doable. I just wanna make a cheap method for playing paintball:) Maybe a handpump marker is a better option lol. But yeah, I wanna get the experience and tech from the paintball markers so I can get a perfect semiauti bb gun>on high pressure. Gippeto, you also made a pump right? Have you tried ur max yet? Another problem I oversee is the fittings of the tanks and gauges:S

[Gippeto]

[ Gippeto, you also made a pump right? Have you tried ur max yet? Another problem I oversee is the fittings of the tanks and gauges:S[/quote]

I built the pump in this thread, and put up a tutorial here;

http://www.spudfiles.com/forums/easy-st ... 13277.html

I have tried my "max" in the copper gun that I built. I can get my pump a bit over 400psi as noted.

At 400psi, the copper gun is pretty impressive.

As for fittings on paintball tanks, I believe you will have to have an adapter made.

Perhaps someone here knows of one that is available?

[Antonio]

I'll sit down and flush out the instructions this weekend.

Good lord, we have another one! scroll down

premature piloting>
hahaha

[DYI]

I wouldn't put it past BtB to bring a homemade hand pump to 400 bar. The way his post was written seems to indicate that he meant 400 bar, not 400 psi. If it was anyone else, I would have called bullsh*t.

[Gippeto]

Fair enough.

For the curious;

Brians pump cylinder was 12mm id.

@80Bar the force required would be 206.75 pounds

To get 400Bar (~5800psi) using the same force, the pump id would be ~5.4mm

If he went to 400 Bar, he would not have posted about it...he would still be pumping!

[POLAND_SPUD]

I am not saying it isn't possible to get 400 bar... but hey it a lot you know.... even 50 bar is a lot...

[Brian the brain]

The way his post was written seems to indicate that he meant 400 bar, not 400 psi. If it was anyone else, I would have called bullsh*t.

Funny to see you all discuss this with such uncertainty.
I meant psi, so there.But thanks for the confidence!
The fisrt one gave out at 80 BAR
so 60 should be no problem.
There is just NO way you are gonna pump up a CO2 bottle by hand.Pumping up Overkill to 20 BAR took me 15 minutes.And it wasn't fun.So I'm glad POLAND-SPUD came around and showed us the fridge compressor.
Remember CO2 is stored as a liquid in a tank, so that will give you WAY more shots than plain compressed air..WAY more.
It is not worth pumping for that long.I estimate it will take at least an hour.
For real.