Cracking pressure ofa standard schrader???

Potatoes last one shot, so build reusable! Discuss ammo designs and ideas. Tough to find cannon part or questions? Ask here!
Post Reply
jeepkahn
Corporal 3
Corporal 3
Posts: 747
Joined: Fri Jan 09, 2009 1:11 pm
Location: Triad, NC, USA

Tue May 05, 2009 10:27 am

Anyone know it off the top of your head???

TIA
Top
User avatar
jrrdw
Moderator
Moderator
United States of America
Posts: 6571
Joined: Wed Nov 16, 2005 5:11 pm
Location: Maryland
Has thanked: 39 times
Been thanked: 22 times
Contact:
Contact jrrdw

Donating Members

Tue May 05, 2009 10:30 am

I would think the seal and spring will fail before the housing cracked.
Top
User avatar
Carlman
Staff Sergeant 2
Staff Sergeant 2
Posts: 1618
Joined: Sat Nov 24, 2007 1:18 am
Location: Western Australia
Been thanked: 2 times

Tue May 05, 2009 10:33 am

around 70psi mate
Image
Aussie spudders unite!!
Top
User avatar
Biopyro
Corporal 2
Corporal 2
Posts: 654
Joined: Fri Aug 04, 2006 5:32 am
Location: UK

Tue May 05, 2009 10:34 am

70psi or thereabouts. Thee is a topic around discussing it, which I'm just looking for.
Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety. -Benjamin Franklin
Top
jeepkahn
Corporal 3
Corporal 3
Posts: 747
Joined: Fri Jan 09, 2009 1:11 pm
Location: Triad, NC, USA

Tue May 05, 2009 10:34 am

Thanks Carlman....
Top
User avatar
Ragnarok
Captain
Captain
Posts: 5401
Joined: Tue Dec 19, 2006 8:23 am
Location: The UK

Tue May 05, 2009 10:53 am

Biopyro wrote:There is a topic around discussing it, which I'm just looking for.
If I remember right, it's Don Gippeto that revealed that information.

I think this is the original source: http://www.spudfiles.com/forums/viewtop ... tml#159756
Does that thing kinda look like a big cat to you?
Top
User avatar
jook13
Specialist 4
Specialist 4
Posts: 434
Joined: Mon Jan 21, 2008 10:39 pm
Location: Prescott Arizona

Tue May 05, 2009 11:10 am

If you are worried about the cracking pressure, check into presta valves. cracking pressure of like 1 psi. I just got into messing with them and they are badass.
I like to play blackjack. I'm not addicted to gambling, I'm addicted to sitting in a semi-circle.
Top
MRR
Specialist 3
Specialist 3
Posts: 361
Joined: Tue Feb 17, 2009 2:29 pm

Tue May 05, 2009 2:07 pm

I'm asking myself what shraders you are talking about!?
I use shrader valves all the time with pressures past 150 psi and never had a failure.

Did I miss something?
Top
jeepkahn
Corporal 3
Corporal 3
Posts: 747
Joined: Fri Jan 09, 2009 1:11 pm
Location: Triad, NC, USA

Tue May 05, 2009 2:16 pm

We're talking about how much pressure(psi) before the air pressure overcomes the spring pressure to allow air through the valve... NOT, how much pressure before they crack/break/selfdestruct....

normally cracking pressure is used to describe/quantify the pressure required to force air past a oneway/check valve....
Top
MRR
Specialist 3
Specialist 3
Posts: 361
Joined: Tue Feb 17, 2009 2:29 pm

Tue May 05, 2009 2:21 pm

Oh ok.

I was a little confused by jrrdw's comment.
Top
jeepkahn
Corporal 3
Corporal 3
Posts: 747
Joined: Fri Jan 09, 2009 1:11 pm
Location: Triad, NC, USA

Tue May 05, 2009 2:29 pm

MRR wrote:Oh ok.

I was a little confused by jrrdw's comment.
So was I... LOL
Top
User avatar
inonickname
First Sergeant 4
First Sergeant 4
Posts: 2606
Joined: Sun Dec 07, 2008 3:27 am

Tue May 05, 2009 8:22 pm

Yep, I've also found the average cracking pressure to be 70 psi, give or take a few. If you want no cracking pressure then get the cores with an external spring and cut it off. You will need backpressure for it to reseat though.
PimpAssasinG wrote:no im strong but you are a fat gay mother sucker that gets raped by black man for fun
Top
Post Reply

Return to “Ammo & Parts”