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Posted: Sun Jun 22, 2008 5:08 pm
by frankrede
spudfarm wrote:i think all the "magic dust" talk should be stopped here before someone get a nice slap by a mod.
frank: cell core is just fine for everything. if you don't put more pressure in it than 5psi.
one more note about this. you know
these balls? i bursted one and it held up to 65psi.
Excuse me?
Spudfarm, I suggest you rethink your words, you obviously don't know who I am.
Posted: Sun Jun 22, 2008 5:21 pm
by SpudFarm
what?
powder is not allowed
cell core is fine on 5psi since you can blow harder than that
the ball took 65psi
Posted: Sun Jun 22, 2008 5:36 pm
by Maniac
Spudfarm you must have been using a cheaper brand,my dad takes his up to a around 30, and uses his on a regular basis, the only reason he ever throws one out is because of regular wear and tear. and leakage around the filling inlet.
Posted: Sun Jun 22, 2008 6:57 pm
by SpudFarm
there people go.. even thin rubber balls can take 30psi with a man on it.
(maybe the calculation i did was right)
Posted: Sun Jun 22, 2008 8:00 pm
by joestue
65 psi is, well, insane.
6.5 psi is a more reasonable burst.
even with someone sitting on it, and a one foot diameter circle is touching the ground, which i would imagine is reasonable, yields 113 square inches.
at most 2 psi people, unless your grandma is sitting on it...
edit: 30-65 kilo pascals makes sense, at 4.3 to 9.4 psi
Posted: Mon Jun 23, 2008 7:59 am
by frankrede
spudfarm wrote:what?
powder is not allowed
cell core is fine on 5psi since you can blow harder than that
the ball took 65psi
I was saying, don't talk down to me as if I didn't know my stuff.
Posted: Mon Jun 23, 2008 11:14 am
by SpudFarm
i did not.. i just said the truth.. and it was not to tell you anything, it was like just a joke since everyone know cell core is fine on 5psi.
Posted: Mon Jun 23, 2008 5:53 pm
by frankrede
spudfarm wrote:i did not.. i just said the truth.. and it was not to tell you anything, it was like just a joke since everyone know cell core is fine on 5psi.
nonetheless, Cell core abs is fine at 6 psi;)
Posted: Mon Jun 23, 2008 5:59 pm
by SpudFarm
Posted: Tue Jun 24, 2008 11:35 pm
by tyrant_bb
One more question, is iron pipe as strong as steel? I'm not talking about the malleable iron fittings, I'm just talking about the black iron nipples that I see in the hardware stores.
I'm not really worried that it would fail if its stronger than malleable... but I'm just wondering.
Posted: Wed Jun 25, 2008 12:13 am
by frankrede
I believe that it is steel....
Posted: Wed Jun 25, 2008 7:33 am
by cdheller
SpudFarm wrote:i can't have done that right..
52000 for material strength looks pretty high.
30-35000 is the range of steel pipe ,,I don't know the numbers for iron.
Standard practice is cutting your final strength in halve on threaded pipe with other measurements the same.
Posted: Wed Jun 25, 2008 11:20 am
by SpudFarm
