Instructables
The first question I often get about this creation is "Why?." The answer is quite simple, I am an engineering student at Stony Brook University. We play a game on campus called "Humans vs. Zombies." That fact coupled with my over competitiveness, and my drive to engineer things most people wouldn't is what ultimately spawned this NERF gun. 

Although it may not be the first ever made, it certainly is one of the best to date. I would classify this as a prototype, it is far from perfect but it DOES work. Unfortunately I was only able to use it for a few days of the fall 2010 SBU HvZ game as it was damaged when a zombie caught one of the hoses and cracked the shell. It is of course fixable I just would rather make a new more improved version (Flywheels.... that's the only teaser you're going to get ;). 

This Instructable will hopefully be viewed by a few other forums as I hardly have the time to even write this.

DISCLAIMER: Modifying a NERF gun in this manner will permanently alter it. This instructable should only be used as a reference, as your specific modification will be different. NEVER use a CO2 canister that has not been properly filled. This modification should only be attempted if the proper tools and safety precautions are employed. 

Why do we go all out for HvZ? Because when else are we going to be able to deck out in tactical gear and run around campus with NERF guns?..... THAT's why =)


Featured on:
Hackaday


A sample of the magnificence:

 
 
Remove these adsRemove these ads by Signing Up
1-40 of 90Next »
llima11 year ago
okay heres a question why not use a solenoid to pull the plunger rod back instead of using air? and just put a battery inisde the enormous free space the longshot has inside of it
Philysteak527 (author)  llima11 year ago
The power required to activate a solenoid that powerful would be too much for the amount of space available.
jpennels2 years ago
I know the second version is much better, i still prefer the look of this. It just looks so much nicer!
Philysteak527 (author)  jpennels1 year ago
I have to agree, some day I'll get around to making one from scratch to look just the way I want.
Musicman412 years ago
What happens if the tube gets pulled off or cut? Is it hazardous, or are there safety mechanisms?
Philysteak527 (author)  Musicman411 year ago
If the tube gets pulled off or cut it just vents CO2 until you shut the tank valve. The pressure is limited to 140 psi so not much more than a shop air compressor. The bolt mechanism works best at 110 psi and there is a burst disc on the CO2 tank so no other safety mechanism required.
junits151 year ago
That looks awesome! Just a thought I had, would it be easier to make a longer bolt and skip the bolt sled entirely? Then the bolt would push the dart into the barrel and fire it. Eliminates the need for the charging handle too. Or are the darts too prone to bending for this to work?
how much did this all cost ?
wha......


i know i want one

Trust me I'm a doctor
What??
THATS HOT could it shot paint balls
Delsl3 years ago
Just curious what Solenoid did you use? I'm working on a similar project with a nerf maverick and I'm just trying to figure out what kind of voltage I'm going to need.
Philysteak527 (author)  Delsl3 years ago
I used one of these [Solenoids

But in your case you don't need a 3 way valve, you could use a cheaper one like [This].

If you are planning to hook 12 gram CO2 cartridges strait up to a valve then these wont work, the output pressure of those cartridges is around 900 psi. 
Well that is certainly good to know; my original plan was to use a 3000 psi nitrogen tank I had laying around from paintball. Do you think it would work if I had a regulator between the tank and solenoid?
fierwall5 Delsl2 years ago
the tank is 3000 psi but the psi leaving the tank is 800 or 400 psi depending on the tank and then the gun steps that down to whatever pressure it uses so if you want to use it for a Nerf gun try using a regulator from a gun and go from there.
Philysteak527 (author)  Delsl3 years ago
A regulator is necessary, i'm not very up to date on the paintball parts available, but if you could find a regulator that would bring it down to 150 psi you could hook it directly to the solenoid. They do make solenoids that can handle the higher pressures... just not for $25
gbredemeyer3 years ago
haha, as a past nerfhaven user, much respect on this. I love it. I've done some homemades involving hpa tanks and pressure washer valves...yeah..it was fun. Very cool though and impressive ranges you listed there when using a larger chamber.

-Graham, www.pypline.com -The online community for makers
jumpingcat3 years ago
lol that is funny where everyone is all normal and you have all your tactical gear on in the middle you look like a ninja (that is good)
hjklkjh3 years ago
OMG! that is SO SICK
gentoo473 years ago
CRAZY AWESOME!!!!!!!
alexw21503 years ago
What program is that?
isaacjonv3 years ago
dude u should take dart with the tip ripped off put a bic pen in it and glue that into the barrel of the gun and turn it into an AIRSOFT GUN
mrelement3 years ago
put a masterkey on it or some sort of nerf grenade launcher thtatd be awesome
that would be epic
isaacjonv3 years ago
Your insane dude!!!!!!!!!!!!!!!!!!!!!!! Thats beast!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
taowyman3 years ago
did you take this apart if not would you sell that for like $30
this is INSANE!!!!!!!i have a longshot (already modded:))but i probably wouldn't risk doin this even if i had all the tools and things but i would love to do this and mebe improve range a little( or a lot!!!) if i had about 20 longshots lol 5/5 stars from me we just need more people like you!!!! :)
joh543 years ago
that is so awesome!!!
kooyon3 years ago
NERDZ
soups1013 years ago
i think this thing rocks of course its better than mine
lazyboy133 years ago
very cool man!! theres another guy on youtube with a gun with the same function as ur gun. only thing is, u should give it a badass paintjob, that would be really awesome and make pple think twice before shooting u!!
what you have essentially made is an open bolt autococker paintball gun, you should look up how a sspyder paintball gun works for your next build, i could give you a link of an animation if you would like, it would be far more efficient and you could get better range at a lower psi
abadfart3 years ago
im going to try with a old paintball gun
so when you have a BIG Nerf war dose the host supply the darts or do you bring your own
Cheezpaper3 years ago
Lol awesome mod. But since I'm too lazy to read this, can anyone tell me what the co2 tank is for?
Isn't it obvious?It's probably not there to give you a nice breeze,is it.
Lol but it says the co2 tanks not connected... I'm confused.
He means that the tank is not attached the gun. Like how some paintball guns or older airsoft guns use a hose to connect to the tank instead of the tank connecting directly to it. If you look closely, you can see that the tank is close enough to the gun that someone might mistake it for being attached to the front.
what is your average range you get with this?
I get 80' consistently, but I purposely limited the power so noone would complain that my shots hurt during the hvZ game. If you put in a larger expansion chamber I was able to reach 173 feet, but getting hit with a dart at close range left a rather large welt.
1-40 of 90Next »