Gas Operated Rifle UPDATED AGAIN
24 posts • Page 1 of 1
Gas Operated Rifle UPDATED AGAIN
so i have been a phun/algodoo user since phun beta 2.88 but i rarely upload the stuff that i make
i believe this to be a first of its kind and a much, much, more reliable way to harness to power of a spring bullet.
instead of using recoil this uses the movement of the bullet itself to power the rechambering of the next round allowing for a much more reliable gun with a much faster rechambering due to the high spring strength it allows.
The gun looks like shit because it was only meant to be a proof of concept for the simulated gas operating mechanism.
I encourage anyone reading this to improve on this as best they can, as i truly believe this should be the future of Algodoo gun designs.
I have made a second rifle showcasing the mechanism in a better rifle
i believe this to be a first of its kind and a much, much, more reliable way to harness to power of a spring bullet.
instead of using recoil this uses the movement of the bullet itself to power the rechambering of the next round allowing for a much more reliable gun with a much faster rechambering due to the high spring strength it allows.
The gun looks like shit because it was only meant to be a proof of concept for the simulated gas operating mechanism.
I encourage anyone reading this to improve on this as best they can, as i truly believe this should be the future of Algodoo gun designs.
I have made a second rifle showcasing the mechanism in a better rifle
Last edited by Roast Beef on Fri Mar 26, 2010 4:23 am, edited 3 times in total.
- Roast Beef
- Posts: 28
- Joined: Tue Sep 08, 2009 11:18 pm
Re: Gas Operated Rifle
Awesome! I usually increased the mass of my bullets so that I would get more power from the round, but then it would take more energy to chamber the next round too. This is so much more efficient! With it pushing against that forward block you can convert so much more of the springs energy into work and you don't need a massive bullet.
This really does clear out a lot of the constraints on recoil operated guns. I can see guns with much higher tolerances like belt-fed MGs popping up as a result of this. I really want to run with this right now but I'm busy
This really does clear out a lot of the constraints on recoil operated guns. I can see guns with much higher tolerances like belt-fed MGs popping up as a result of this. I really want to run with this right now but I'm busy

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Paradigm 29 - Posts: 284
- Joined: Tue Sep 01, 2009 12:06 am
- Location: Houston, Tx
Re: Gas Operated Rifle
The main advantage i see with this mechanism is that you can have a much, much higher bolt spring allowing for a much faster rechambering while still having a weaker bullet spring so you can keep the sim speed low.
even though i didn't really show that off very well, with my sim speed being 1000htz and whatnot...
even though i didn't really show that off very well, with my sim speed being 1000htz and whatnot...
- Roast Beef
- Posts: 28
- Joined: Tue Sep 08, 2009 11:18 pm
Re: Gas Operated Rifle
That is AWESOME. And automatic fire is so simple! But it doesn't work—after a couple shots, something gets out of alignment in the gun and the empty "shells" start falling back into the magazine, which, a few shots later, jams the gun. But in semiauto mode it's totally awesome, and auto works for like 3-shot bursts.
- daniels220
- Posts: 95
- Joined: Mon Aug 31, 2009 11:30 pm
Re: Gas Operated Rifle
daniels220 wrote:That is AWESOME. And automatic fire is so simple! But it doesn't work—after a couple shots, something gets out of alignment in the gun and the empty "shells" start falling back into the magazine, which, a few shots later, jams the gun. But in semiauto mode it's totally awesome, and auto works for like 3-shot bursts.
you didn't complete the modification
the piece that keeps spent shells from falling back in? the light blue boxes next to the magazine need to be set to 0 restitution then it will do full auto no problem
i would have put a fire selector switch onto it but this was only supposed to showcase the mechanism not be a fully functioning gun
- Roast Beef
- Posts: 28
- Joined: Tue Sep 08, 2009 11:18 pm
Re: Gas Operated Rifle
Awesome. I agree that it's one of the best innovations in phun/algodoo gunmaking. I'm totally going to experiment with similliar system. 
Phundamentalist
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davidz40 - Posts: 438
- Joined: Sun Sep 06, 2009 10:30 am
Re: Gas Operated Rifle
Oh, cool, works perfectly now.
- daniels220
- Posts: 95
- Joined: Mon Aug 31, 2009 11:30 pm
Re: Gas Operated Rifle
davidz40 wrote:Awesome. I agree that it's one of the best innovations in phun/algodoo gunmaking. I'm totally going to experiment with similliar system.
It makes me very happy to hear you say that. The more big names that incorperate this into their designs, the better its chances are of catching on. The whole reason i bothered uploading this at all is so that algodoo/phun gus can get a boost in their rate of fire and overall quality, so if it dies because a no-name like me uploaded it then it would really be a shame.
- Roast Beef
- Posts: 28
- Joined: Tue Sep 08, 2009 11:18 pm
Re: Gas Operated Rifle UPDATED
I have made an AK47 to better showcase the new mechanism
- Roast Beef
- Posts: 28
- Joined: Tue Sep 08, 2009 11:18 pm
Re: Gas Operated Rifle UPDATED
I found the time to make one:
It's useful, but it doesn't raise the rate of fire too much in the 100hz range. I'm not too fond of raising the sim frequency either, but I made an exception to try this out. 350hz isn't so bad.
It's useful, but it doesn't raise the rate of fire too much in the 100hz range. I'm not too fond of raising the sim frequency either, but I made an exception to try this out. 350hz isn't so bad.

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Paradigm 29 - Posts: 284
- Joined: Tue Sep 01, 2009 12:06 am
- Location: Houston, Tx
Re: Gas Operated Rifle UPDATED
Paradigm 29 wrote:It's useful, but it doesn't raise the rate of fire too much in the 100hz range. I'm not too fond of raising the sim frequency either, but I made an exception to try this out. 350hz isn't so bad.
I realized that too when i was making the AK47
I origionally made it to work in 100htz then after it was working i modified the springs to function faster at 1000htz
I did notice however that even though i didnt experence a noticeable increace in fire rate, I did find it to be much more reliable.
I dont know... Im kindof bummed that the fire rates wont go up, but at least its not wasted effort.
- Roast Beef
- Posts: 28
- Joined: Tue Sep 08, 2009 11:18 pm
Re: Gas Operated Rifle UPDATED
High sim speeds are great for reliability but increase lag in complex builds,
its the biggest problem with
most of my stuff
Love your concept
most of my stuff
Love your concept
"I should be working on my plane"
- Gent
- Posts: 105
- Joined: Tue Sep 01, 2009 5:42 am
- Location: Springfield Mo USA
Re: Gas Operated Rifle UPDATED
Paradigm 29 wrote:I found the time to make one:
It's useful, but it doesn't raise the rate of fire too much in the 100hz range. I'm not too fond of raising the sim frequency either, but I made an exception to try this out. 350hz isn't so bad.
That... is... friggin awesome!!
You need a larger, reloadable clip, though. maybe i'll make one when i get the time.
Been here since ~Phun 4.22, but post very infrequently.
I mean VERY infrequently.
I mean VERY infrequently.
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lollerskates - Posts: 406
- Joined: Mon Aug 31, 2009 10:47 pm
- Location: /dev/null
Re: Gas Operated Rifle UPDATED
Hey Roast Beef, don't worry too much about being unknown!
You're smart, post well, and create interesting and awesome stuff.
I feel very similar to you. I've been using phun since just after 3 was released, and I only upload a little. What I do upload has generally been interesting and high quality. I still have the most detailed textureless ragdoll ( master chief ), which no one seems to have bested.
Man I need to upload more
( on iPhone so no algodoo to test scenes but it looks and sounds awesome.)
You're smart, post well, and create interesting and awesome stuff.
I feel very similar to you. I've been using phun since just after 3 was released, and I only upload a little. What I do upload has generally been interesting and high quality. I still have the most detailed textureless ragdoll ( master chief ), which no one seems to have bested.
Man I need to upload more
.. ,__,_____
. / __.==--" - - - - - - - - ""
./#(-'
.`-' From http://www.ascii-art.de/. Modded by me to work in Arial.
. / __.==--" - - - - - - - - ""
./#(-'
.`-' From http://www.ascii-art.de/. Modded by me to work in Arial.

a Mammoth wrote:be boring and interesting.
I didn't know you could go up 3.1.3! Thanks Mystery person!Mystery wrote:If you were jailbreaker you shouldn't have when't up the 3.1.3
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Dakta - Posts: 417
- Joined: Sat Sep 12, 2009 4:36 pm
Re: Gas Operated Rifle UPDATED
Dakta wrote:Hey Roast Beef, don't worry too much about being unknown!
You're smart, post well, and create interesting and awesome stuff.
I feel very similar to you. I've been using phun since just after 3 was released, and I only upload a little. What I do upload has generally been interesting and high quality. I still have the most detailed textureless ragdoll ( master chief ), which no one seems to have bested.
Man I need to upload more( on iPhone so no algodoo to test scenes but it looks and sounds awesome.)
No, you don't have the master cheif title.
Jaxnash has held that, and will hold that forever xD
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kilebantick - Posts: 1267
- Joined: Tue Sep 01, 2009 9:50 am
Re: Gas Operated Rifle UPDATED
Honestly, as I said in phunbox, this is just blow back. Your response with deleting the piston, yes that will kill it's function, but all you really did is move the bolt spring to that tube up there. Subsequently making it more complicated.
In order to make a true gas operated gun, one must have, above all, gas. Gas operated guns have a locked bolt, and the bolt only unlocks after the bullet has left the barrel. Blow back bolts are never locked and it is the force of the cartridge pushing back on the bolt which cycles it, as this gun is doing.
However, as a gun, its really cool. and I congratulate you for it.
I've made several blow back guns, such as this:
This one, which has a separate tube for the spring; You're calling this concept "gas operated":
And this one, which uses delayed blow back:
The bolt is locked until the bullet unlocks it. I think it theoretically gives better firing rates.
In order to make a true gas operated gun, one must have, above all, gas. Gas operated guns have a locked bolt, and the bolt only unlocks after the bullet has left the barrel. Blow back bolts are never locked and it is the force of the cartridge pushing back on the bolt which cycles it, as this gun is doing.
However, as a gun, its really cool. and I congratulate you for it.
I've made several blow back guns, such as this:
This one, which has a separate tube for the spring; You're calling this concept "gas operated":
And this one, which uses delayed blow back:
The bolt is locked until the bullet unlocks it. I think it theoretically gives better firing rates.
Phundamentalist, I am.
- a Mammoth
- Posts: 66
- Joined: Tue Sep 01, 2009 3:46 am
Re: Gas Operated Rifle UPDATED
a Mammoth wrote:Honestly, as I sad in phunbox, this is just blow back. Your response with deleting the piston, yes that will kill it's function, but all you really did is move the bolt spring to that tube up there. Subsequently making it more complicated.
In order to make a true gas operated gun, one must have, above all, gas. Gas operated guns have a locked bolt, and the bolt only unlocks after the bullet has left the barrel. Blow back bolts are never locked and it is the force of the cartridge pushing back on the bolt which cycles it, as this gun is doing.
However, as a gun, its really cool. and I congratulate you for it.
your missing the point...
i cant make a really gas mechanism because as you said there is no gas
however the principal behind a gas piston mechanism is that the extra gas behind the bullet is what re chambers the next round
since there is no extra gas i use extra spring strength.
so the bullet pushes directly against the piston which re-cocks the gun
if i put the spring on the back and deleted the gas mechanism i would either have to weigh the bullet down or decrease the spring strength of the bolt to have the same effect
and if i did that i would loose reliability AND it would take a small hit to its fire rate.
With this current mechanism you can make the spring on the bullet re-cock the gun itself instead of having the minimal impulse of the spring releasing doing the work.
- Attachments
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gas piston.png- (10.32 KiB) Not downloaded yet
- Roast Beef
- Posts: 28
- Joined: Tue Sep 08, 2009 11:18 pm
Re: Gas Operated Rifle UPDATED
Roast beef, i congratulate you. You have re-made this as accurately as Algodoo will allow, using mechanics to "Simulate" Gas.
This is an A-Grade scene, and anyone that says otherwise, is just a hater
This is an A-Grade scene, and anyone that says otherwise, is just a hater
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kilebantick - Posts: 1267
- Joined: Tue Sep 01, 2009 9:50 am
Re: Gas Operated Rifle UPDATED
I love this. If you make an M1911 with this, I'll love it even more.
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Sonic - Posts: 1467
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- Location: America!!!
Re: Gas Operated Rifle UPDATED
kilebantick wrote:Dakta wrote:Hey Roast Beef, don't worry too much about being unknown!
You're smart, post well, and create interesting and awesome stuff.
I feel very similar to you. I've been using phun since just after 3 was released, and I only upload a little. What I do upload has generally been interesting and high quality. I still have the most detailed textureless ragdoll ( master chief ), which no one seems to have bested.
Man I need to upload more( on iPhone so no algodoo to test scenes but it looks and sounds awesome.)
No, you don't have the master cheif title.
Jaxnash has held that, and will hold that forever xD
WIldcat made that, though. JaX just improved it.
TheWinkits wrote:They both looks of cuking amazing
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Chronos - [Most Active Member 2010]
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Re: Gas Operated Rifle UPDATED
Chronos wrote:kilebantick wrote:Dakta wrote:Hey Roast Beef, don't worry too much about being unknown!
You're smart, post well, and create interesting and awesome stuff.
I feel very similar to you. I've been using phun since just after 3 was released, and I only upload a little. What I do upload has generally been interesting and high quality. I still have the most detailed textureless ragdoll ( master chief ), which no one seems to have bested.
Man I need to upload more( on iPhone so no algodoo to test scenes but it looks and sounds awesome.)
No, you don't have the master cheif title.
Jaxnash has held that, and will hold that forever xD
WIldcat made that, though. JaX just improved it.
Most detailed textureless....
Been here since ~Phun 4.22, but post very infrequently.
I mean VERY infrequently.
I mean VERY infrequently.
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lollerskates - Posts: 406
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Re: Gas Operated Rifle UPDATED
Wildcat still made it, and without him, JaX would have had nothing to improve.
TheWinkits wrote:They both looks of cuking amazing
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Chronos - [Most Active Member 2010]
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Re: Gas Operated Rifle UPDATED
Look at all of Jax's other scenes, i'm sure if Jax wanted to, he could have made a far better one. Still, it IS the most detailed, and he, and possibly others made it, so dakta DOESN'T have the most detailed one 
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kilebantick - Posts: 1267
- Joined: Tue Sep 01, 2009 9:50 am
Re: Gas Operated Rifle UPDATED
I consider Jax's scene an overload of faked gradients that can't be practically used as a ragdoll on anything without amazing graphics capacity. Mine is more practical. Besides:

Anyways, whatever, mostly I forgot about his. Mine doesn't have the most polygons. But it runs smoothly on my computer whereas JAX's does not. Therefore, I like mine better, because I can actually use it.
Point is, you don't have to be JAX to be awesome.
Lies about creatorship. You guys claim it was Wildcat originally, but he claims it was all him. I know that mine was entirely made from scratch by me, although Wildcat improved mine and gave credit (added more legs and arms). And, mine was fully released and improved on before JAX's. What is to say he didn't just add more detail to mine eh?JAXNash wrote:THE MOST DETAILED, REALISTIC MASTER CHIEF RAGDOLL EVER TO HAVE BEEN MADE OR TO BE MADE IN PHUN BY ME AND ONLY ME.
Anyways, whatever, mostly I forgot about his. Mine doesn't have the most polygons. But it runs smoothly on my computer whereas JAX's does not. Therefore, I like mine better, because I can actually use it.
Point is, you don't have to be JAX to be awesome.
.. ,__,_____
. / __.==--" - - - - - - - - ""
./#(-'
.`-' From http://www.ascii-art.de/. Modded by me to work in Arial.
. / __.==--" - - - - - - - - ""
./#(-'
.`-' From http://www.ascii-art.de/. Modded by me to work in Arial.

a Mammoth wrote:be boring and interesting.
I didn't know you could go up 3.1.3! Thanks Mystery person!Mystery wrote:If you were jailbreaker you shouldn't have when't up the 3.1.3
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Dakta - Posts: 417
- Joined: Sat Sep 12, 2009 4:36 pm
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