full sized GB hybrid
its a price we all have to pay my friend (if you own a hybrid that is)
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Fnord
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That's not a bad idea actually.
I just have to fix crap that breaks due to ridiculous mechanical stresses.
Not me. I'm above the law! Muahaha.its a price we all have to pay my friend (if you own a hybrid that is)
I just have to fix crap that breaks due to ridiculous mechanical stresses.
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bigbob12345
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Or a burst disk pnumaticsthorne wrote:its a price we all have to pay my friend (if you own a hybrid that is)
And spudfarm I actually really like that idea but I would use a vice instead and clamp it down as hard as I can.
or that. and technically, wouldn't a "burst disk pneumatic" just be an advanced pneumatic?bigbob12345 wrote:Or a burst disk pnumaticsthorne wrote:its a price we all have to pay my friend (if you own a hybrid that is)
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Um, you use unrated abs at 500 psi
Well, make that 50 times the rated pressure... I'm pretty sure that I significantly exceed the burst pressure of the barrel pipes, it's amazing how long they've survived, even in subzero temperatures with heavy (and often completely jammed 
) ammo.No. When you're talking about a pneumatic, the valve is the defining component, and a lot of valves fall into the so-called "advanced" category, anything homemade really.and technically, wouldn't a "burst disk pneumatic" just be an advanced pneumatic?
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SpudBlaster15
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Last edited by SpudBlaster15 on Wed Jul 14, 2021 6:37 pm, edited 1 time in total.
Well that's certainly good to know. I'd always assumed it was lower, with all the talk of it bursting at around 150 psi... I guess just another unbased assumption like the whole "mixes over 4x risk detonation" thing. What's the burst pressure of 4" SCH 40 ABS? I may not have to reinforce that barrel after all...DYI, 2" nominal diameter Sch 40 DWV ABS pipe should (assuming no molding defects) have a burst pressure of around 1000PSI, so I am not surprised that it resists <500PSI for only a few tens of milliseconds.
And I'm using DWV copper for the barrel on my hybrid, so no worries there (I hope).
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The goal for my hybrid is 10x air/MAPP. After hydrostatic testing to 1500 psig, 10x will be the normal operating mix. Due to the nature of my meter, I don't expect that fueling will be incredibly accurate below 4x or so, and I see no real reason to use anything other than full power, except maybe for shooting in my yard.
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SpudBlaster15
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Last edited by SpudBlaster15 on Wed Jul 14, 2021 6:37 pm, edited 1 time in total.
Thanks. I'll probably reinforce it anyway, because I don't want to risk accidentally bursting a $90 chunk of pipe.
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