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K'NEX Gun: Rate of Fire (+ Internal Pics and Videos)

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Hello again. Here I am with my 5th entry to the "Toy Rods and Connecters Contest," a K'NEX gun I named "Rate of Fire" (ROF). I built this gun for two reasons:
1) I wanted a gun that I could run as many rounds through it as I wanted without worrying about it jamming, and
2) I wanted a gun with a great rate of fire = how many bullets can leave the barrel per-second.
What got me started on a ROF gun was Sharir1701's REMPAR. Seeing him shoot off all of those in that amount of time shocked me, and I was like "dad-gum-it, that is awesome!"

With all of that said, I present to you my K'NEX gun: Rate of Fire. It kinda reminds me of a mix of a Magpul PDR and Sharir1701's S1. It has a rate of fire that can empty one mag (7 bullets) in less than 3 seconds. I have not done a full range test yet, but it probably gets at least 40 ft, if not 60 - 70 ft. This is technically a second attempt at my "The TUB."

Features:
  • Great rate of fire: 2.3 bullets per second (7 rounds per 2 seconds)
  • Good range: at least 40 ft.
  • Comfortable
  • Cheek rest (see pic #5)
  • Easy to charge, even with two bands (I only have one in the pics)
  • Nice body (IMO)
  • Nice looking sights





-The Red Book of Westmarch
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It shoots a dark grey, one slot, connecter with a green rod attached.
ZakS1 year ago
This gun is quite bad.
And yet it got featured, 95% of K'NEXers like it, and it works great.
Dont listen to him, he is just your usual f**k head member off KI!
I know, I'm not listening to him. Careful bro (see video #4 on that link), before you hurt your self. XD
LOL xD
I respect your opinion, and I can see why you might think that, but since you have never held the gun (not to mention fired the gun), I don't think you are in the position to say that the gun has: "poor design, ammo, and range." And, to practice my debate skills before the debate season starts, I will separately address the things you mentioned.

Poor design: What about this gun has poor design? It designed it so that it was comfortable, sturdy, and so that the back/stock of the gun has an (almost) equal weight with the front, thus creating an equilibrium. While this gun may be just a bit short, this is really not a con in any way, as that can be put down to piece conservation. Poor design? I think not.

Poor ammo (choice): This will always be a matter of contention between K'NEXers. People have different opinions (link), and you "running me down" because of my choice of ammo is silly, to say the least. I find that a dark grey one slot connecter with a green rod is a great ammo choice, so I chose to use it. I personally dislike rod ammo, which, in my opinion, really only works in the TR series.

Poor range: It shoots 40 feet? What is "poor range" about that? What more could any one want? Besides, this gun was built for ROF, not range. It is best for CQC, and was meant to overwhelm your "enemies" with a ton of bullets, nothing more.

Overall: I will recap what I stated above: I respect your opinions, but you have never held or fired this gun, so be careful when you state stuff like: "I don't think you understand that poor design, ammo, and range all quantify a, yeah, quite bad gun."
I think what it comes down to is that this gun is too generic for Zak. He likes to see things innovative or very well optimized.
Perhaps, or maybe he was just in a bad mood. All the same, it really does not matter.

Generic gun indeed...
Man, I hope theres more of your 'debates' to read! lol, I had fun reading that but yeah, I agree that the gun is built for ROF not for range hence why it being called 'Rate of Fire'. If looking at range, well....
Thanks for that complement. Yeah, people who take a second and view both sides are more apt to make a decision.
Np and thanks for the 400th comment!
You are welcome. =D
ZKAR shoots just as fast, but much harder.
I have built that ZKAR, I don't think it fires just a fast, as this, but then again, it could be purely speculation.

Part of the reason why I don't build BA guns is:

When you bring the CH back to charge the pin, it pulls the bolt back, getting the next round ready to be pushed into the chamber. When you push the CH forwards, it pushes the round up into a chamber, then you can fire. As happens all the time with the ZKAR, the S1, and the S2, the pin does not always hit the bullet, which means to have to get the round that you chambered out, so that you can chamber another one.

My point: If a BA gun jams, and there is a bullet in the chamber, you can't push another one in, thus you have to take out the whole bolt to fix the jam. I can't tell you how many times I have had to do this with a BA gun, namely the ZKAR.

Trigger is weak, it doesn't block far back at all, ram hardly has any room to accelerate, its a huge gun for what it does, other ammo types will fly farther and hit harder, plenty of guns shoot farther than this with the same ROF as well as harder. This is mostly a generic pin gun with a handle on the pin. Also it has a ridiculous amount of cut parts for being not so special.
Have you built this gun? Have you fired this gun? If not, you are not, as I said before, in a position to say much, if anything at all.

The trigger is super strong. How would you know it is weak if you have never used it.

It blocks the pin back as far as it can without allowing the pin to fall out in any way. The ram firing pin (FP) has a ton of room to accelerate. Again, how would you know if you have never built it.

It is a huge gun for what it does? Again, have you ever held it? I think it is fine, besides, many people in this community like big guns (although this gun is not that big).

"other ammo types will fly farther and hit harder, plenty of guns shoot farther than this with the same ROF as well as harder..." That may be all well and true, but I would really like you to give me links to those guns (excluding the TR and the NAR). And please  only give me links to guns that you have built.

A ridiculous amount of cut parts? No, not really, no. Besides, that is just your opinion, there is no right or wrong.
Because 95% of people don't understand why its bad. And it got featured because you took pretty pictures, not because of how good it is.
No, because 95% of people aren't jealous that it got featured, and it did not get featured because I took pretty pictures, it got featured because somebody at 'ibles liked it.
Looks good. Can you explain to me the magazine some more? Like, how are the rods advanced after each round?
Thanks man. Well, the rubber bands push the "pusher" up and this pushes each bullet into a position to fire it. I don't know if I am making my self clear...
That makes sense. The firing and reloading of these guns is fascinating and I'd love to see a straight-up detail explaining how it works.
I could provide some pics, and a video...
It would help those of us that aren't quite as experienced. I think a separate Instructable just explaining the mechanics is something that would be really beneficial.

There's very basic K'NEX guns, and some very advanced ones; but I don't see any documentation explaining how they work. You pro gun-builders are on another level and maybe take these complexities for granted. I'd love to see a detailed Step-by-Step that covers triggers, magazines, reloading, firing mechanism, bi/tripods, elastic types, and all other manner of accessories.

I'll throw down a 1-year membership and a freshly designed digital patch to the first who can make a comprehensive Step-by-Step showing me exactly how K'NEX gun mechanics work using the elements I listed as a guide.
Has the method and style of construction not changed since that was written?
The basic mechanisms and triggers outlined in that instructable have not changed in the slightest. There may be new variations and new components that have been invented since then like turrets, but the core concept of a pin striking the ammo, or the ammo being slingshotted out of a gun have not changed since the inception of knex guns in 2006. Neither has the classic magazine mechanism where ammo gets pushed up into the barrel changed, there's just been many different ways people construct that same push-up magazine, either to accommodate different ammo types or for cosmetic reasons. Hoppers are kind of going out of style though to be honest.

If I were to look at recent gun designs barring some bizarre new experimental concept gun, most would either feature a tube barrel, or a square barrel in the case of magazine fed guns. Some mag fed guns even have a tube barrel, thanks to the advent of iPod Killer's sniper in 2007.

The short version: There may be many different new variants on magazines, triggers, and mechanisms, but the way each of them work at their core is still exactly the same.
So, you're saying that there's not room for an updated Instructable detailing how K'NEX guns work? I disagree. Though the information might be similar, I think the sophistication of the weapons I've seen has increased and there is a need to share basic information for new readers.

I think things can always be presented again in a fresh clear way and there's no harm in a new approach on that topic, especially if it's by a different author.
Luckily, 2 other members have already risen to that challenge.
I agree there's been lots of improvement and change since that guide has been posted, and weapons have gotten much more advanced. However, I think this guide would give newcomers a good understanding on how mechanisms work on the most basic level, despite it's 6 year age.

I also agree though that a new, updated guide could be in order, preferably one with physics explaining what makes a more powerful build and maybe insight as to why the best guns are the most reliable and powerful.
I think I will split up what you said into two categories, and make them two different 'ibes. The first one will be all about the gun its self, anything from different kids of guns to their particular mechs. The second being different accessories, grenade launchers, sights, things of that sort. TAD and I are planning on working on it together.
I will add another video, and some pics of the internals, but I am not sure if I want to to another instructable just to do it.
I'll definitely take you up on that offer. :D Have been working on it for a while now.
So let me get this straight, all of the thing you mentioned in one epic ible'?! Hmmmm that would be a lot of work.
A rod with a rubberband pushing it up constantly pushes up a new round into firing position once the current round has been fired.
Exactly. What he said.
The fastest ROF knex layout would be handle pump actions, pump actions, etc. I just dont think this gun is that fast with the bolt design layout. The bolt is large and is up on the top, making it so you cannot take aim while cocking the weapon. The top sights are very low making it even harder to take aim. ROF is all about comfort to, and this doesn't look that comfortable cocking it back. I think the TR18 & NAR design is still better than this design. Check out DJ Radio's "Blast from the past" instructable, and the TR sayer is a very fast and powerful weapon, because you can aim well and cock the weapon with speed, the magazine that you have on your gun doesn't look to big, on a ROF gun, the more ammo, the better.

But overall I'd say this is really cool that you took the T.U.B design and made it into this. It looks really cool and is built very well. Its defiantly a great build! Great job! :D
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I have to disagree too. A bolt handle is faster than a plain pin only because it gives you easier access to pulling the pin. However, then you have your hand oddly placed and to the average shooter, this won't make you as fast nor accurate just because it's not natural. If you need a little more science, then chances are that the offset of the bolt will make you start pulling your gun to the left a little never keeping consistent aim. A pump is optimal. And if you don't like current pump action designs, then by all means, make your own. And seeing how you're willing to throw range out the window (very fair if you have a high RoF) then try to make it a repeating shotgun so you can easily overwhelm people. But that's just my two cents. Your gun is just fine.
IMO Knexsayer is still the best pump action out there.
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