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Ways to add a recoil system.

Posted: Thu Apr 26, 2012 12:34 pm
by warhead052
So for my next build, I would like to add an aesthetic recoil system, that makes the cannon look like its firing alot harder than it really is. Any ideas on what I could do to do that? I was thinking some sort of sled on springs, and when you pull the string to fire, it slams back and then pulled back up. Any other ideas that may work?

Posted: Thu Apr 26, 2012 12:37 pm
by wyz2285
You want a recoil absorber or something to make the gun recoil harder?
I used a recoil absorber for my hybrid...

Posted: Thu Apr 26, 2012 12:44 pm
by warhead052
Something to make it recoil harder. I was thinking maybe a reverse muzzle break too. That way it will force the cannon back a little bit more.

Posted: Thu Apr 26, 2012 12:56 pm
by jackssmirkingrevenge
Why not just make a more powerful launcher :D even a small calibre hybrid has plenty of recoil.

Posted: Thu Apr 26, 2012 12:59 pm
by warhead052
Jack, its going to be a 3" bore, 7' long barrel. Its gonna be big enough as it is, just need the added effect of recoil.

Posted: Thu Apr 26, 2012 2:12 pm
by Goats spudz
A Large gas spring!

Posted: Thu Apr 26, 2012 2:18 pm
by MrCrowley
What valve are you using, what projectile are you shooting and at what pressures?

I can understand wanting to make a recoil system like an 88—I would personally fall in love with such a gun—but if this is going to be handheld or fired from the ground I don't see the point.

Posted: Thu Apr 26, 2012 2:44 pm
by sagthegreat
i have a handheld gun and i want a recoil system too, i mean who wouldnt want a 50 cal recoil on their gun. Usually shooting denser projectiles helps a lot

Posted: Thu Apr 26, 2012 3:33 pm
by velocity3x
sagthegreat wrote: i mean who wouldnt want a 50 cal recoil on their gun.
Probably someone who never fired a 50BMG. :roll: :roll: :roll: 50bmg produces about 57% more muzzle energy than the 600 nitro express shown in the video.
[youtube][/youtube]

Posted: Thu Apr 26, 2012 4:21 pm
by HunterT
Shoot bigger heavier projectiles. If you have access to a lathe, you could make something like the Mini Boy, but much bigger.

Posted: Thu Apr 26, 2012 6:15 pm
by Fnord
I'd just make a normal, 'weak' recoil system, then make everything on the gun as light as possible. Use the heaviest projectile you can.
Long ago I was shooting lead slugs from a combustion, which weighed only six times more than the slugs. The recoiled from this was very significant, since I was absorbing ~1/6th of the gun's muzzle energy (equal and opposite reaction/conservation of momentum).

The nitro-express has such a massive kick because there's not as much difference between the projectile's mass and the gun's mass. A .50 cal rifle with a recoil absorber can be shouldered without too much effort, since it's heavy.

[youtube][/youtube]

Posted: Thu Apr 26, 2012 6:33 pm
by sagthegreat
is there a way to do it changing projectile weight, how would one make a reverse muzzle break like warhead was saying

Posted: Thu Apr 26, 2012 8:20 pm
by warhead052
Well, this is no where near hand held... Its going to be a 3" or so bore, and 7' long barrel. Going for a howitzer look. This is going to a milsim team, JROTC for that matter, around here, and they want it as close to the real thing as possible. Launching the average nerfs, possible howlers since they make a huge amount of noise. I was thinking a big 3" ball or butterfly valve, for max airflow with it being as close to real as possible (the pulling on the string part at least...) and that dumps the entire chamber right into the barrel. It would be inline, so no reason for the air flow to be blocked or choked or anything. I need it to recoil as much as possible though.

Posted: Thu Apr 26, 2012 8:24 pm
by mattyzip77
Instead of making the cannon look like its recoiling hard, why dony you make a cannon that actually does have a badass recoil??? Just sayin>>> :sign7: :sign7:

Posted: Thu Apr 26, 2012 8:30 pm
by warhead052
That's the point. I need it to recoil as much as possible, but I won't get much recoil from a foam projectile...