Step 11: Spring Guns - Spring Replacement

Recall from Step 4 that in spring guns, it is the spring that causes the plunger to shoot forward. The plunger is the part of the gun that compresses the air to shoot the dart. So, if the stock spring is replaced with a stronger spring, the plunger will be able to compress the air faster, because there is more force behind the plunger. Although the spring replacement is an effective modification, it does have one drawback: using a stronger spring could cause the barrel to detach from wherever it was glued. However, if you use a strong barrel setup, using a stronger spring should be harmless. Keep in mind though, you do not want to pick a spring that is too strong; there must be limits if you want to keep your barrel from detaching.

Replacing the spring on a gun is very simple. You first must choose your spring. If it is necessary, you must cut down your spring to a length very close to that of the stock spring. A spring should be cut either with bolt cutters, or a Dremel with a cut-off wheel attachment. Other tools might break if used to cut a spring. Once your spring is cut, it is ready to be put in your gun. You can remove the plunger head (usually by unscrewing it) then take out the old spring. You can then put the new spring in its place. Other approaches to spring replacements include adding an extra spring and even stretching the stock spring. However, stretching your spring can cause it to break later, so it is not recommended by experienced Nerfers.
<p>If I may be so bold...</p><p>&quot;Notice the air-limiting material structured like a grate. These air limiting &quot;grates&quot; reduce the Titan's range because air is forced to flow <em>around </em>the air limiters.&quot;</p><p>These may very well be in other Nerf guns. But what I found when I took my Nitefinder apart was a restricting *valve*. The function is simple:</p><p>- the valve is held in place by a spring so that no air flows from the air cylinder to the barrel. </p><p>- the valve has three prongs that extend into the barrel a short distance.</p><p>- when the nerf dart is slipped onto the centering rod (which makes it easy to load the gun and keeps the dart correctly oriented even if it has been kinked by damage or over-eager loading), it slides down until it hits the three prongs. The prongs (and attached valve disk) are pushed back against the slight valve spring pressure and held in place by the dart's friction fit in the barrel. Please note that if you remove the centering rod with pliers, you may reduce that friction fit to the point where the dart will not hold the three prongs firmly in the retracted position. This is important, as you will see.</p><p>- when the gun is fired, the piston rapidly compresses the air in the cylinder and it exits through the restricting valve into the cylinder. The dart is sent down the barrel, but - and this is important - when it moves forward in the barrel, it releases its tension on the three prongs and they, along with the restricting valve, move forward again under pressure from both spring and air that is still coming from the air cylinder.</p><p>Understand? You get a very brief pulse of air from the air cylinder and as soon as the dart is on it's way, the restrictor valve slams shut, preventing any more air from entering the barrel.</p><p>I don't know if removing the centering rod and its supports will make any difference at all, in this gun or any other. I don't know if removing the restricting valve will improve range either. But I have an educated opinion I will offer here:</p><p>The Nitefinder barrel is very short and the dart is light - it seems to me the dart would be out of the barrel too quickly for any significant pressure to build up. The gun was designed with the dart mass, the air compression time, the barrel length and an ultimate range/muzzle velocity in mind - removing the restrictor valve in this case would probably just result in a puff of air popping out after the dart. You might get a few additional feet, but removing the restrictor valve is a real chore. I wasn't able to do it without wrecking the cylinder and barrel. The valve body is welded together with acetone and this is not something you can just drill out, either.</p><p>Other Nerf guns use different techniques to limit the range, but all these guns are designed to work for years *as toys* with minimum chance for lawsuit.</p>
&nbsp;nerf for fun and not getting hurt<br /> <br /> <br /> <br /> <br /> Paintball/airsoft for people who want to get hurt<br /> <br /> <br /> Id choose nerf<br />
Same here!<br />
i choose paintball. lolz<br />
okay, witht these mods you can poke people with thumbtack bullets. nerf can be just as painful but costs less!!!!!!!!!
you know you can make explosive airsoft buulets and if you know what your doing you can make a grenade launcher that actually explodes sending shrapnel in all directions. airsoft owns. you can bring your nerf guns back to kindergarden unlees your ready to be a man and take the pain of airsoft.<br>
<p>no u cant bro I put together real guns and I started of with nerf and airsoft geuss wat u cant do that to a airsoft and geuss wat u wanna be a real man with guns join the marines im enlisted right now so shut up</p>
<p>I was thinking about joining the Australian army in a few months since i am already twenty five.</p>
paintball?&nbsp; nerf? aaahhhh i cant choose!!!!!lolz<br /> <br /> <br /> (enters paintball match)&nbsp; ooww ok screw this i choose nerf<br /> <br /> (walks home and gets shot by nerf gun)&nbsp; hhm&nbsp; i miss the pain back too paintball
yeah <br />
Why not just make a nerf gun from scratch. Like what's the difference between making my own and modding a gun that I buy?
<p>The difference is that its cheaper,easier and the parts are usually pretty good quality as for making your own gun it can be hard to get the right parts and most of the time you would need a 3d printer.</p>
<p>HvZ and SuperStock wars require you to have regular guns, but allow mods. NIC wars let more things in</p>
<p>That would not be called nerf anymore but homemade gun</p>
<p>The difference is literally making every single bloody part by hand. Sure, you CAN make a barrel, magazine, and all the other pieces from scratch, or you could just a gun and replace the spring...</p>
<p>To all of the people saying that (<em>insert sport here</em>) is better, let me just say that it is all up to personal preference. Airsoft, Nerf, and paintball each have different qualities that different people like. And to those who say &quot;Nerf is for kids, real men use Airsoft&quot;, or that &quot;Real men take the pain, or &quot;Real men use real guns&quot; why are you even here? This is a article about Nerf. If you feel like insulting something or someone, go somewhere else instead of a place for people to learn. All you are doing is proving that you are a simple minded jerk. Real men are kind, caring, positive people like the person who took time out of his life to make a guide for people new to Nerf mods.</p>
What a good guy
<p>Props, bro. That's one of the best comments I've seen in a while.</p>
<p>That's something to say Amen to</p>
<p>Thanks so much, I don't feel inclined to disagree! :-)</p>
<p>Real guns conquer all.</p><p>No batteries required.</p><p>B8</p>
<p>what kinds of springs can i use to replace the one in my nerf zombie strike longshot?</p>
<p> we have the stuff but cant make it</p>
<p>Not really mechanically inclined, really appreciated the step by step photos and overview. Thanks</p>
<p>I love Led Zeppelin!</p>
<p>A few years ago, I listened to a Led Zeppelin album virtually every day. Weirdly, I never really liked Presence very much until just recently. I wonder why that is?</p><p>Anyway, do you have a favorite Zeppelin album?</p>
<p>Probably Mothership.</p>
<p>Ah--I was thinking more of their original studio albums when I asked, but Mothership's a fine collection, too!</p>
<p>one mod I did was take two ten-shot dart tag guns, do the normal removal of the springs and such(on one I took the spring out of a firefly rev-8 and put it in. It stings!), took the end pieces off, and duct taped them together! You shoot one, and when it runs out, you flip it around and use the second gun!</p>
Thanks! Just yesterday I was talking to my cousin about the nerf wars he goes to and hosts and he told me that they always modded their guns. Now from this, I will do the same, and it will be AWESOME!!!!!!!
<p>heh made a nerf sly dart by making a dark tube out of a Kleenex and stuffing it with flour. It looked authentically shotgun!</p>
1 i can buy a quality airsoft rifle for $15.2 i have modded many of my guns to spray and my pistols to shoot farther. and 3 in a pro airsoft war you better have a secondary that you can reach quickely or you die. summary...airsoft owns!
Airsoft is a way better sport because you don't have to go around picking up darts and the ammo is cheaper, plus it gives you more of an adrenaline rush.<br>
<p>ok nerf amo are only 5 bucks for thirty and 10 for 75 so no airsoft is way harder</p>
Sniperbeast, I agree. Nothing can beat airsoft.
<p>ill tell u wat beats airsoft its called a 357 magnum ruger yeah a real gun better than airsoft by abou 400 mph faster so lol</p>
real cool
Hi thanks that has really helped
You're very welcome! I remember how lost I felt when I first began searching Nerf forums to learn about modding--and that's exactly why I wrote this Instructable :-)
Could you just pull the air restrictor out of the barrel with some pliers, or would that break the plunger?
Hi! <br> <br>This probably depends on the specific Nerf gun that you're attempting to modify, but here's what I think applies to most Nerf guns: <br> <br>If there's a barrel post, you could probably pull that out of the barrel without taking apart your Nerf gun at all. However, in order to remove other air-limiting devices (like the air restrictor itself, which is usually found with a spring), you will most likely need to take apart the Nerf gun. The plunger is usually found a little behind the barrel, so I don't think it's likely that you'll damage the plunger by attempting to remove air-restricting plastic from the barrel using pliers. If you want the most range from your Nerf gun, though, consider taking apart the gun!
Hey do you know if i can paint my nerf with acrylic pant???
Thanx a lot :)
Hi can i ask you something ? Does darts hurts ?sorry for ask you a simple thing its just that im new of this thing of nerf
Hi! <br> <br>Unfortunately, I can't exactly measure how much darts &quot;hurt&quot;--to a great extent, it depends on the person who's getting hit! But, in my experience, I would say that Nerf darts don't hurt. Keep in mind: if you modify your Nerf guns, the darts will travel at higher speeds, and if you use stefans, then the darts may be less &quot;soft&quot; than stock Nerf darts (the stefans I use only have felt discs on the heads). However, as long as you're wearing clothing, you shouldn't feel much pain when you're hit. <br> <br>Recommendation: if you want to play with modified Nerf guns, going outdoors will ensure that you and your friends are firing at each other over longer ranges (so the darts shouldn't hurt as much). Also, do not play with modified Nerf guns in the nude. That one might be a given. <br> <br>No, loincloths shouldn't be allowed either.
like nerf better beacuse i can mod esayer and you dont kill people if you hit them right.
I like when people use correct grammar and spelling.
Where do I get O-Rings?

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Bio: I'm Alec. I like to post Instructables whenever I get to work on my own projects. But, that isn't exactly all the time ... More »
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