Gun made of Plasson pipe and fittings vs MAPP gas?
Posted: Fri Jul 23, 2010 2:10 pm
Ok hey again, it's been a while.
Right so I upgraded my guns a bit and made a new light weight version with the stuff thats avail in denmark.
at the mo I'm currently running with a golfball system, well almost.
Gun is made of 4" chamber and 2" barrel
Chamber is running a near 4.2liter and the barrel is specced for a 1.5:1 as I like that the most.
Running with a single spark unmodded flyswatter ignition as running 6 or 9 volts fried 6 of em' already.
Metered propane system inspired by tripplethunder (cheers)
and a small but crazy turbine'ish 40mm fan.
Right well heres my question, as I finally came across some MAPP gas in my local DIY shop i went bonanza, I was all LIEK GIEF! Tho my wife who I guess finally showed some interest in my "work/art" asked, "Myah, but are you sure your gun is fit for MAPP and wont go gigantic boom in yer face?"
me ;"??, Myah but it's MAPP!!"
So here I am.
The make and pressure ratings of my pipe and fittings is Plasson. All the fittings is rated PN12 that should be aproved for 12 bar.
Barrel is PN10 and chamber 7.5.
Now to translate my metrical to imperial 7.5 bar is 109 PSI and I recon reading somewhere that the highest explosion measured was around 89PSI i woulnd't have any problems would I?
When I find my card reader again I'll toss up the pictures with the gun, the golfballs, my whacked neighbourg shouting FORE! and my old satellite dish being molested.
Anyways, I guess I could just jump into it with both legs, but then again I just wanna make sure before I blowup stuff
Oh and would I have to adjust my metering system? As I run 3 bar worth of 30/70 butane/propane gas in my pipe. I'm just thinking if it's that much more powerful the amount needed might need to be rescaled.
Cheers
Right so I upgraded my guns a bit and made a new light weight version with the stuff thats avail in denmark.
at the mo I'm currently running with a golfball system, well almost.
Gun is made of 4" chamber and 2" barrel
Chamber is running a near 4.2liter and the barrel is specced for a 1.5:1 as I like that the most.
Running with a single spark unmodded flyswatter ignition as running 6 or 9 volts fried 6 of em' already.
Metered propane system inspired by tripplethunder (cheers)
and a small but crazy turbine'ish 40mm fan.
Right well heres my question, as I finally came across some MAPP gas in my local DIY shop i went bonanza, I was all LIEK GIEF! Tho my wife who I guess finally showed some interest in my "work/art" asked, "Myah, but are you sure your gun is fit for MAPP and wont go gigantic boom in yer face?"
me ;"??, Myah but it's MAPP!!"
So here I am.
The make and pressure ratings of my pipe and fittings is Plasson. All the fittings is rated PN12 that should be aproved for 12 bar.
Barrel is PN10 and chamber 7.5.
Now to translate my metrical to imperial 7.5 bar is 109 PSI and I recon reading somewhere that the highest explosion measured was around 89PSI i woulnd't have any problems would I?
When I find my card reader again I'll toss up the pictures with the gun, the golfballs, my whacked neighbourg shouting FORE! and my old satellite dish being molested.
Anyways, I guess I could just jump into it with both legs, but then again I just wanna make sure before I blowup stuff
Oh and would I have to adjust my metering system? As I run 3 bar worth of 30/70 butane/propane gas in my pipe. I'm just thinking if it's that much more powerful the amount needed might need to be rescaled.
Cheers
