Airsoft (1600 Fps)
Intro: Airsoft (1600 Fps)
Youtube is having troubles with the audio =(
STEP 1: Materials and Tools!!!
All of the parts were avb. at my local hardware store
You'll need
1 Male NPT quick release
1 Female npt valve
1 9/32 brass pipe (No Bigger or smaller!!!)
13/32 brass pipe (adapts and fit to most standard butane bottles, check to make sure ti fits first)
1 butane bottle
plastic bb's
metal putty!
5/16's cork
light load 1/4 od spring
1/4 npt to 1/4 inch hose barb
2 feet of 1/4 teflon hose ( I used some low pressure, clear teflon i had lying around)
Hot glue
Dremel!!!
Cresent wrench
STEP 2: Pipes
then cut 2 inches off your big pipe
Good? good.
STEP 3: Its Hamm----dremel Time!
Now take a cutting bit and cut off 6/16's of an inch of pipe through 1/2 of the pipe depth about 2 inches from either end of your big pipe.
Now use you dremel to flare the end of th 2*9/32's pipe and stick the flared and into your new cut on the big pipe, Which the putty and cement it into place there.
now us your dremel to open the inside of the MALE npt up a bit, mix more putty and rub it onto the base of the long pipe, now stick that into the male npt. It should be a snug fit.
STEP 4: Hot Glue Hurts on the Skin =(((
thats basically it....
STEP 5: Pipe!
On the other end of the hose put hot glue on your smallest pipe, squeeze it in and fasten with a hose barb, your ready for a pressure test.
Put the bottle on the small end of the hose and squeese straight in, if you see liquid in the tub, your good, now carefully take the hose off (Butane will spray out, be careful its -170C!)
STEP 6: Your Almost Ready!
STEP 7: Final Project!
the math 13*.012 = .156 * .2 = .0312 *54125 = 1598 fps
(sheets of paper) 13
(Densile grams per 1/4 inch) .012
(gram weight per bb) .20 grams
constant of paper-fps conversion) 54125
Holy crap thats hard math, basically we have the amount of paper per 1/4 inch we punch through * the gram mass of the bb * a constant value that equates in velocity
48 Comments
vulcan13 13 years ago
stop over exagerating
itsthatsguy 13 years ago
iperrin 12 years ago
Your manner of measuring, the number of sheets the pellets travel through, is also not accurate. There are several threads posted on the forum Michigan Airsoft (MIA) that have reliable, tested methods of determining the general speed of a projectile. I suggest you take a Google search over there, and see what you can find. You might get a better, more accurate reading of your FPS.
SeanM124 7 years ago
airsoft hurts normally! 1600 fps could kill you
vulcan13 10 years ago
i have been shot at point blank by a 500fps airsoft rifle using .40 gram bbs (again standard airsoft sniper ammo) , and the only reason it did not stick in my skin was because it hit bone . the next person to get shot was not so lucky he had to dig a bb out of his neck. point being if you have an airsoft gun that shoots three times faster than that,and you shoot your friends with it, your friend wont be friends for long.
KentR2 9 years ago
yeah but you can kill your self by hitting your temple or neck with a well placed knockle.
diydonut 9 years ago
Can it even go through the bottom of a coke can? If it can't then it isn't pushing past 400 FPS
Snidely70448 9 years ago
Been doing a little more research. The pressure in your butane can is on the order of 30 PSI at room temperature. Nor going to get much velocity out of 30 psi.
Snidely70448 9 years ago
A standard 9mm Parabellum police round, aka 9mmx19, uses about a 150 grain (10 gram) bullet traveling about 1500 fps. I think you are confusing grams with grains. A gram weighs 15.4 grains. A 12 gram projectile would weigh about 180 grains. By comparison, a lead ball 1/2" in diameter weighs about 178 grains.
Snidely70448 9 years ago
I have a number of break-barrel air rifles, GAMO, Beeman, Crosman. NONE of them shoot a projectile over about 1200 fps. Most are around 1000 fps, and the "youth" versions are around 600fps. Achieving anything over 1100 fps (speed of sound) is very difficult with a pneumatic weapon.
minijc 11 years ago
crmartin 12 years ago
MultipleParadox 12 years ago
Most airsoft gas-guns works on propane/greengas right?
The high-range of these airsoft guns will reach about 550 fps, rarely 600 fps, at about 25ºC. And that is considered a lot, as 400 fps is enough to cause tissue damage. All this using 0.2g BBs.
Now, the propane is used in the same way as you use the butane; the gas expansion propels the BB.
Let's go check what's the Critical Pressure of both gas (that means the MAX pressure you could theoretically get no matter the temperature, not the pressure you actual have in your canister, which is much lower for security reasons)
Butane: 3.8 MPa
Propane: 4.257 MPa
Conclusion? You speak bullsh*t
I doubt butane would even give you more than 350.
Still not bad at all actually, but 1600fps? Come on. It's clear you don't even know what that means
MultipleParadox 12 years ago
https://www.instructables.com/id/Poor-mans-airsoft-chrono/
iperrin 12 years ago
In addition, do NOT use butane in ANY form of cycling, projectile firing device. Butane is VERY unstable - this is why you can throw a lighter at the ground, and it will explode - so running around with a pressurized container of butane, which feeds into a chamber to fire pellets is unbelievably dangerous. Consider switching the gas to propane, a more stable gas used for other pressurized gas airsoft guns.
ilpug 12 years ago
vulcan13 13 years ago
a can of butane or propane is not going to do something like that
itsthatsguy 13 years ago
broper 12 years ago
mikemurph 13 years ago