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Max Pressure in a Hybrid

A place to ask general spud cannon related questions.
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Max Pressure in a Hybrid

Unread postAuthor: zvallance1 » Sun Apr 02, 2006 4:23 pm

Does anyone know what max tested mix in a hybrid has been?
I've seen that people have done 4x mixes without ammo...but has anything higher been done?
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Unread postAuthor: saladtossser » Sun Apr 02, 2006 4:26 pm

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Unread postAuthor: zvallance1 » Sun Apr 02, 2006 8:57 pm

I actaully saw this article when i was looking for for an answer earlier...
i know that is says
These guns can reach and exceed 300psi when firing

and
it should have held 350psi easily


but im just curious as to the highest mix that's been succesfully used, not the pressures that it should handle
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Unread postAuthor: spudshot » Mon Apr 03, 2006 5:30 am

spudinator has fired up to a 5x mix i believe, he broke the sound barrier on that shot too
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Unread postAuthor: HAYLO_Stealer » Mon Apr 03, 2006 1:56 pm

wow talk about what should be illegal not sayinf i magainst it. I mage firing batteries that break sound barrier at milita. (holy crap he j8st took down a bomber or a blawk hawk) :twisted: :twisted: great
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Unread postAuthor: zvallance1 » Mon Apr 03, 2006 5:57 pm

spudshot wrote:spudinator has fired up to a 5x mix i believe, he broke the sound barrier on that shot too


Ok, sweet! Any idea how his gun held up to it?



HAYLO_Stealer wrote:wow talk about what should be illegal not sayinf i magainst it. I mage firing batteries that break sound barrier at milita. (holy crap he j8st took down a bomber or a blawk hawk) :twisted: :twisted: great


I really have no idea what this was meant to say, and damnit...my "crappy typing to English" translator is busted.

anyone care to translate?
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Unread postAuthor: iamthewalrus » Mon Apr 03, 2006 6:15 pm

Translation: Wow talk about what sould be illegal, not saying im aginst it, imagin firing batteries that break the sound barrier at the military. (holy crap he just took down a bomber or a black hawk) :twisted: :twisted: great.

as for how the gun held up, it was most likly made of metal, i havent seen the gun but i cant imagin pvc holding a 5x mix.
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Unread postAuthor: spudshot » Mon Apr 03, 2006 6:33 pm

it was sch 80 PVC, i'm not sure which of his hybrids it was, but its on here
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Unread postAuthor: iamthewalrus » Mon Apr 03, 2006 6:44 pm

wow, what was the chamber diameter, i jsut cant see pvc holding 5x mix (sry for going off topic)
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Unread postAuthor: zvallance1 » Mon Apr 03, 2006 9:01 pm

iamthewalrus wrote:wow, what was the chamber diameter, i jsut cant see pvc holding 5x mix (sry for going off topic)


well you never know...Sch80 is pretty darn tough! But then again, looking at this table i just found

1/2 -509
3/4 -413
1 -378
1 1/4 -312
1 1/2 -282
2 -243
2 1/2 -255
3 -225

It looks like it would have to be a pretty small chamber to hold that much pressure, and then you have to take into consideration the burst disk that was used...would have had to been one hell of a tough disk...

anyways, feel free to clear up my doubts!
Better yet, lets get Spudinator to reply to this =)


oh and Iamthewalrus, thanks for the translation...even though that guy's response probably cost me 10 or 15 IQ points...
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Unread postAuthor: zvallance1 » Mon Apr 03, 2006 9:03 pm

Woops my bad..Firefox lagged and i hit Submit twice for a double-post..
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Unread postAuthor: nicholai » Mon Apr 03, 2006 11:59 pm

zvallance1 wrote:
iamthewalrus wrote:wow, what was the chamber diameter, i jsut cant see pvc holding 5x mix (sry for going off topic)


well you never know...Sch80 is pretty darn tough! But then again, looking at this table i just found

1/2 -509
3/4 -413
1 -378
1 1/4 -312
1 1/2 -282
2 -243
2 1/2 -255
3 -225




dont forget 4 inch pipe! 220 psiw, this table looks like its all for sch. 40 pipe too, take into consideration that the pipe is rated for water pressure not air, and that sch 80. holds more pressure
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Unread postAuthor: zvallance1 » Tue Apr 04, 2006 1:32 am

nicholai wrote:This table looks like its all for sch. 40 pipe too, take into consideration that the pipe is rated for water pressure not air, and that sch 80. holds more pressure


Nope, thats all for sch 80!
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Unread postAuthor: nicholai » Tue Apr 04, 2006 1:47 am

hmm i think thats wrong dude

check this out

http://www.agf.gov.bc.ca/resmgmt/publis ... 0240-1.pdf
http://www.csupomona.edu/~rkumar/lis231 ... sch40t.htm

research research research.... the ratings you posted are actually lower than sch 40 pipe

the smaller pipe has a higher pressure rating because the sidewalls are thicker in comparison to the inside diameter or the volume of the pipe
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Unread postAuthor: Shrimphead » Tue Apr 04, 2006 7:07 pm

Ya i have some 1/2 sch 40 and its rated to 600, and I have 3" sch 40 and it's rated to 225 or close to that. Sch 80 has to be rated for more.
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