air pump update 9.1.08 700psi + picture

Cannons powered by pneumatic pressure (compressed gas) using a valve or other release.
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far_cry
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this is my home made air pump
updated
this a picture of my new gauge at 700 psi

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this is the pump
this is the pump
this is the check valve . ok lits say a 3/4in water check valve
this is the check valve . ok lits say a 3/4in water check valve
ok in those 2 pictures you can see the piston<br />the strange thing i don't use any O ring because i don't find one to fit so i cut from track wheel tube a circle a little bit bigger from diameter of the cylinder and drill it in the center
ok in those 2 pictures you can see the piston
the strange thing i don't use any O ring because i don't find one to fit so i cut from track wheel tube a circle a little bit bigger from diameter of the cylinder and drill it in the center
ok in those 2 pictures you can see the piston<br />the strange thing i don't use any O ring because i don't find one to fit so i cut from track wheel tube a circle a little bit bigger from diameter of the cylinder and drill it in the center
ok in those 2 pictures you can see the piston
the strange thing i don't use any O ring because i don't find one to fit so i cut from track wheel tube a circle a little bit bigger from diameter of the cylinder and drill it in the center
this is a cooking gas tube that cant handle pressure
this is a cooking gas tube that cant handle pressure
Last edited by far_cry on Sat Dec 13, 2008 8:11 am, edited 7 times in total.
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SpudUke5
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Does it work?
(Message to short)
4SPC, My 4" piston 3" porting cannon
Memo:
Fix up copper cannon
Fix up 4SPC
Start Stirrup pump
Start Toolies piston bazooka
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far_cry
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absolutely 100%
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SpudUke5
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Good now how about some specs?
4SPC, My 4" piston 3" porting cannon
Memo:
Fix up copper cannon
Fix up 4SPC
Start Stirrup pump
Start Toolies piston bazooka
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Gippeto
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I think it is great that you have shown initiative and creativity building your own pump. :)


But;

I am sorry to tell you this. :(

I have serious problems with using plastic as the pump cylinder.

Using your pump generates heat from friction and also from compressing the air.

Heat WILL soften the plastic, possibly causing it to blow out.

You could and likely will be injured if that happens. :cry:

I must in good conscience recommend that you stop using your pump.

If you continue to use it, that is your choice.
"It could be that the purpose of your life is to serve as a warning to others" – unknown

Liberalism is a mental disorder, reality is it's cure.
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POLAND_SPUD
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ohhh I have not noticed that it's pvc... I suppose he can use a copper pipe instead
Children are the future

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Sticky_Tape
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It will be difficult to find a copper pipe with the same i/d for use with his plunger.
You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
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far_cry
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thank you gippeto for youre concern
i know that is a risk to use pvs pipe is a cylinder...
but what i can do there is no stores that can i buy a copper pipes and stuff like the boys here can
i seen a member here from israel that he have the same problem no material to buy
Last edited by far_cry on Tue Sep 02, 2008 6:42 pm, edited 1 time in total.
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Sticky_Tape
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thank you gippeto for youre concern
i know that is a risk to use pvs pipe is a cylinder...
but what i can do there is no stores that can i buy a copper pipes and stuff like the boys here can
Sorry but ? can you clear that up?
Never mind I get it the boys on this site correct?
You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
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ALIHISGREAT
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if i were you i wouldn't use that pump again, because the PVC looks very old (sunlight causes it to deteriorate as does the cold) and when PVC bursts, it shatters into shrapnel, so a PVC pump isn;t such a good idea :wink:
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Gippeto
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I realize that material availability is a concern for many outside of North America.

A very good alternative would be seamless tubing in either steel, stainless steal, or aluminum.

Are these kinds of materials simply unavailable, or are they strictly controlled in Israel?

Do they have welding and machine shops in Israel? (Check near a Kibbutz, they would need to repair farm machinery.)They should be able to procure such materials.
"It could be that the purpose of your life is to serve as a warning to others" – unknown

Liberalism is a mental disorder, reality is it's cure.
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sniper hero
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too dangerous
but a nice practise in building a pump :P
I can't build one without proper materials :wink:
proud member of dutch spud clan
coming: semi auto pellet sniper:D
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POLAND_SPUD
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are you palestinian or isreali ?

I know it's not the most political correct thing to write but I imagine what would the IDF do if they see a palestinian carrying something that looks like a 'homemade launcher' :wink:


I am sure that you can buy copper and malleable iron pipes and fittings in isreal - It's not a 3rd world country... you just have to look for them
Children are the future

unless we stop them now
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far_cry
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well
i am guy from israel that belong to arab 48 (that mean we live inside the green line) israeli arabs israeli identity
sniper hero thank you :P

and Sticky_Tape i mean with the boys, The members in this site

ALIHISGREAT you absolutely right this is an old pipe thanks for your concern

gippeto we have all thate materials almost , and i can buy a lathe, small one about 2000$ but you know too many questions in this country
specialy me it is not good
but in the background i can buy almost all that stuff if i find the stores(that far away 30 miles ), and here the prices is expensive.
thanks all
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far_cry
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o what the brr :o :o :o :o :o :o :o :o :o :o
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