Question about tubing

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nadjatee1996
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Tue Feb 22, 2011 1:14 pm

1) If, for example, I have a 3 feet tubing able to withstand 300 PSI, does that mean that 1 feet can withstand 100 PSI?

2) If I have 2 tubes, one can withstand 100 PSI and the other can withstand 200 PSI, and I link them together with a T ( aka two tubes on either side of the T and the shrader on the last end), will it be able to withstand 300 PSI?

Thanks in advance
nadjatee1996
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Tue Feb 22, 2011 1:20 pm

Yes, I seriously do not know, my thought on both of them are...no
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MrCrowley
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Tue Feb 22, 2011 2:04 pm

Ha! Answer is no to both. I'm a bit worried about how you came to that conclusion on the second question though.
nadjatee1996
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Tue Feb 22, 2011 2:12 pm

OK, if I have a 3 feet tube that can withstand like 2431 PSI, a 6 inch tube of it can still withstand a pretty good amount of PSI....right?
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MrCrowley
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Tue Feb 22, 2011 2:13 pm

can still withstand a pretty good amount of PSI
2431PSI.
Gippeto1
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Tue Feb 22, 2011 2:30 pm

nadjatee1996 wrote:1) If, for example, I have a 3 feet tubing able to withstand 300 PSI, does that mean that 1 feet can withstand 100 PSI?

2) If I have 2 tubes, one can withstand 100 PSI and the other can withstand 200 PSI, and I link them together with a T ( aka two tubes on either side of the T and the shrader on the last end), will it be able to withstand 300 PSI?

Thanks in advance
It's GOOD that you ask questions first. :wink:

Tubing rated for 300psi, is good for 300psi...doesn't matter if it's 3 feet, 20 feet or 2 inches...the rating of THAT tubing IS 300psi. Changing the length will NOT alter the rating.

If you have a tube with a 100psi rating....that's its rating. See a pattern here? :)

If you consider that 100psi rated tube to be a part of a "system" ie..you use it in your spuddy....it is STILL only rated to 100psi.

Your spuddy is only as strong as its weakest part.
nadjatee1996
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Tue Feb 22, 2011 4:00 pm

No, the question is, for example, if I cut ONE INCH off of a SIX FEET tubing thats rated for 120 PSI, how much PSI can that one inch stand..ok look at it this way.

6 Feet tube rated at 120 PSI
ONE INCH of that tube rated at ? ( that means a FRACTION of the tube)

Also, we're talking about ONE tube here, and CUTTING that one tube, not buying two different tubes of different lengths but same pressure rating
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Heimo
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Tue Feb 22, 2011 4:10 pm

nadjatee1996 wrote:OK, so if I cut 1 inch off of a 6 feet tube thats able to withstand 500PSI, that 1 inch will be able to withstand 500PSI?!
Yes.

may I ask what made you think that the length of a tube has any thing to do with the pressure it is able to withstand??

simply put: The length of a tube has nothing to do with the amount of pressure it can withstand...
The voices in my head may not be real, but they have some good ideas!
nadjatee1996
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Tue Feb 22, 2011 4:17 pm

I bought a 6 feet tube able to withstand 659 PSI by accident, I was meaning to buy a 6 inch tube able to withstand 659 PSI. I was wondering how much PSI a 6 inch part of that tube can withstand.
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Gun Freak
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Tue Feb 22, 2011 5:14 pm

nadjatee1996 wrote:I was wondering how much PSI a 6 inch part of that tube can withstand.
659 psi.

Wait... how in the world did you mistake 6 inches for 6 feet? :lol:
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nadjatee1996
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Tue Feb 22, 2011 5:37 pm

6' and 6", don't tell me you never made that mistake in your life!!!
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ilovefire
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Tue Feb 22, 2011 5:56 pm

as i said another time i dont mind helping people with cannons whatever age they are, but for someone to ask a question like this (not toooo bad) but then take so long to get the point that there wrong i really dont think you should be playing with cannons at 150psi plus
why make it if it dosent shoot?
nadjatee1996
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Tue Feb 22, 2011 6:48 pm

I did get it, 'til he said "Tubing rated for 300psi, is good for 300psi...doesn't matter if it's 3 feet, 20 feet or 2 inches...the rating of THAT tubing IS 300psi. Changing the length will NOT alter the rating. " Which made me think he was talking about separate pieces of tubing, not a fraction of a tubing, like I said, I much rather be safe than sorry
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ilovefire
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Tue Feb 22, 2011 7:17 pm

yes i know what you mean im not trying to discorage you from asking questions, its much better that you do and not just try it anyways because it wouldnt have ended well trying to put 300psi through a 100psi and 200psi hose :lol: good luck with your build, and please DO ask questions about stuff your not sure about
why make it if it dosent shoot?
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