Mini Hybrid II

Harness the power of precision mixtures of pressurized flammable vapor. Safety first! These are advanced potato guns - not for the beginner.
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jackssmirkingrevenge
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Thu Nov 09, 2023 12:26 pm

It's been over a decade since I first made this project and almost as long since I dabbled in hybrids so here is a recent project along the same lines:

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Nothing particularly special about the design, chamber volume is around 34cc and it's currently fitted with a 490mm long 6mm barrel, construction is steel and aluminum.

I'm using aluminum from the side of a beer can as a burst disk, using air only they burst just below 1500 psi

Here is what it looks like internally, if it seems a little unusual that's because it's actually part of another project that I will share at a later date:

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At 19x using butane it will happily push 0.25 gram airsoft BBs at over twice the speed of sound :D

The goggles, they do nothing!





Biodegradable BBs are fragile but at these speeds the penetration is impressive, right through the goggles and the polystyrene head and into the backstop behind it. I added a pellet tin and it still blew through as if it wasn't there:

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hectmarr wrote:You have to make many weapons, because this field is long and short life
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mark.f
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Sat Nov 11, 2023 4:10 am

He's still at it! Nice work as always.
jackssmirkingrevenge wrote:
Thu Nov 09, 2023 12:26 pm
Here is what it looks like internally, if it seems a little unusual that's because it's actually part of another project that I will share at a later date:
Cryptic as always. ;) Does it have to do with cartridges?
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jackssmirkingrevenge
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Sat Nov 11, 2023 8:09 am

mark.f wrote:
Sat Nov 11, 2023 4:10 am
Does it have to do with cartridges?
Thanks! It's sort-of related with cartridges in that I mated it with the cartridge from the fl(air) gun to make a dual chamber testbed, lots of data generated with that one so it will take some time to compile.
hectmarr wrote:You have to make many weapons, because this field is long and short life
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jackssmirkingrevenge
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Thu Nov 16, 2023 1:10 pm

I made a 0.177" barrel attachment for this thing, at a 20x mix it was pushing 0.35 gram BBs to just over 1800 feet per second :D that's 39 ft lbs of energy!



The same barrel hooked up directly to the air cartridge at 2500 psi yielded 1143 fps, still impressive but only 16 ft lbs, less than half the energy.

When it comes to sheer power, hybrids will deliver it better than pneumatics and with less complexity.
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Thu Nov 16, 2023 3:29 pm

That flash on the first objective was great. :o Good job and an inspiration to many, for sure.
I am compiling these new tests with the pure hybrid, in "Jack's Bible" 8-)
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mark.f
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Sun Nov 19, 2023 9:56 pm

jackssmirkingrevenge wrote:
Thu Nov 16, 2023 1:10 pm
That's a hell of a BB gun. :D
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Mon Nov 20, 2023 6:22 am

That's quite an interesting project! The speed and penetration are impressive. Looking forward to hearing more about your other projects. Stay safe!
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jackssmirkingrevenge
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Mon Nov 20, 2023 9:48 am

mark.f wrote:
Sun Nov 19, 2023 9:56 pm
That's a hell of a BB gun. :D
We have moved somewhat past "you'll shoot your eye out!" territory into something altogether more serious :twisted:
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Anatine Duo
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Tue Dec 19, 2023 10:12 am

Hmmmn just when I thought I had no interest in hybrids
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jackssmirkingrevenge
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Tue Dec 19, 2023 12:21 pm

Anatine Duo wrote:
Tue Dec 19, 2023 10:12 am
Hmmmn just when I thought I had no interest in hybrids
For sheer power there really is no comparison with pneumatics, even with thousands of psi of air and fast valves you will struggle to get the same results.
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Anatine Duo
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Wed Dec 20, 2023 9:48 pm

Yes it's like the difference between an Otto cycle engine and... an air engine :)
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Moonbogg
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Wed Jan 03, 2024 7:49 pm

jackssmirkingrevenge wrote:
Tue Dec 19, 2023 12:21 pm
Anatine Duo wrote:
Tue Dec 19, 2023 10:12 am
Hmmmn just when I thought I had no interest in hybrids
For sheer power there really is no comparison with pneumatics, even with thousands of psi of air and fast valves you will struggle to get the same results.
I decided that the low-mix hybrid is the most efficient and easiest way to get a good, powerful, full-sized cannon. Insquirt propane as usual, pump a little air and BAM!
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