Rapid Fire Hybrid System

Harness the power of precision mixtures of pressurized flammable vapor. Safety first! These are advanced potato guns - not for the beginner.
hectmarr
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Sat Jan 30, 2021 10:35 am

Project update. 8-)
I built the hybrid's wooden stock, I think it looked nice.
I also finished everything about the machine itself. In the photos you can see the parts, the .25 caliber barrel, the bolt system, the piston valve with automatic pilot opening and closing of the pilot, which I described in previous posts, and the combustion chamber, which can be disassembled and use another, (to test - play). It is a modular design.
The combustion chamber has a useful volume of about 30 cm3. I am missing in the future, to assemble all the parts. :lol:
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jackssmirkingrevenge
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Sun Jan 31, 2021 9:10 am

hectmarr wrote:
Sat Jan 30, 2021 10:35 am
I built the hybrid's wooden stock, I think it looked nice.
I agree with that assessment, looks very classy :)
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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Thu Feb 11, 2021 7:37 pm

Just dropping in a couple of weeks late to say: looks nice and hope to see some more progress. :D
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Mon Mar 08, 2021 5:12 pm

I was working to finalize and test this weapon, I think it was decent, and it shoots very well. I built a stand to store the weapon, and to use it when needed.
I just fail to install the open sight, which I am building with the greatest dedication, because the barrel is a jewel, and it is very precise.
In this weapon, you have to manually load the lead pellet from the "cup", and then press the red button on the front of the weapon for one second and it is ready to shoot. The other button, orange, smaller, is to depressurize the system if necessary, they are the only two commands it has. I installed them at the front, because it is more comfortable to operate, because it is not necessary to disassemble the firing position.
The compressed air tank in a 500 cm3 CO2 cylinder, which is filled with air up to 70 bar, and the pressure regulator that decreases to 6 bar, is a bit large but works excellent. I can regulate from zero to 15 bar with good precision. The idea is to put a strap and it goes behind me, on my back, to be able to make the weapon portable. The butane reservoir is that shiny tube of color which is a modified perfume spray.
I've tried everything and it works fine, and it gives me about 70 shots or more. I tried it by shooting out of ammo in groups of 10 and then pausing, so as not to overheat everything. More than enough to shoot 20 or 30 pellets from time to time.
The energy of the shot can pass through three cans of canning from about 8 meters. When I have the sight installed I will do tests at a greater distance, but for a weapon that I shoot at home, I agree. In the future just for testing I will raise the pressure to 7X. 8-)
The total weight is 2100 grams, and it is very comfortable to hold.
I leave some photos and when possible I will make a video to share here.
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jackssmirkingrevenge
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Wed Mar 10, 2021 5:29 am

Impressive performance and also a great look :D

You should try filling the cans with water, although not recommended indoors, in my experience the hydrostatic shock usually pops the cap off and makes a mess :roll:
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Wed Mar 10, 2021 5:43 am

I'm going to fill the cans with water, but they don't have a lid, because they have to be cut to consume the peach candy that we buy here at home. I hope to use the weapon, because I have a bad habit of building, trying and abandoning weapons ... and well, it's like with women, I like them all! :o
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Sun Oct 09, 2022 3:35 pm

A video of test firing of this weapon, grayed out now. I'm shooting with 18g pellets attached to rupture discs, in this case two, for 9X. With three discs, the power is higher, but I have to increase the pressure to 10-11X because otherwise there are times when the disc does not break. Other than that, it works very reliably.
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jackssmirkingrevenge
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Thu Oct 20, 2022 12:24 pm

Excellent, that's a lot of cans perforated!
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Thu Oct 20, 2022 7:04 pm

jackssmirkingrevenge wrote:
Thu Oct 20, 2022 12:24 pm
Excellent, that's a lot of cans perforated!
It's because it has more pressure... and therefore more fuel. Transfers 4 full cans safely, and at 11X, 5 1/2, from a short distance, about 6 meters. At 20 meters, it goes through 3 cans cleanly. I have not tried further, because it is very difficult to hit the target with this type of open sight, and the tests at 20 meters, out of 4 shots, were only in 1 cans... :oops:
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Wed Oct 26, 2022 6:21 am

hectmarr wrote:
Thu Oct 20, 2022 7:04 pm
the tests at 20 meters, out of 4 shots, were only in 1 cans... :oops:
I hope the backstop was secure :D
hectmarr wrote:You have to make many weapons, because this field is long and short life
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