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Emplaced Machine Gun Design

History,Construction,And deployment

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#1 Der Exilen

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Posted 14 August 2006 - 06:21 PM

Some point in 2005 while digging through my basment i found my old razorbeast,and forgot about it until a few nights ago (prior to buying my LongShot) when, i did something i'd always wanted to. i made an AEG Emplaced nerf weapon.

The design is quite simple. I removed the handle and large purple disc surrounding it,and attached an electric motor and cross member. A button located in the trigger guard (which i attached a large plate to for ergonomics,since the button is quite small) powers the gun. And i attached a 4" bipod to the front end.

Replacment chains were made using Copper pipe and canvas bands,which are expandable with snaps.

Overall the original low fire rate issue is resolved,since the electric motor spins faster than the original crank. The new weapon fires about 3 shots every second. The gun itself weights (with a 9v lantern battery) about 3lb more. So far these are bench test reports. Upon my next battle i'll have my field test summary.
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#2 flashflint

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Posted 14 August 2006 - 08:40 PM

You made homemade chains? I have never herd of this being done before.
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#3 deathwolf

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Posted 14 August 2006 - 08:41 PM

I've wanted to try something like this, but I don't have a razorbeast, which is a major setback to a project like this. Does it get better ranges with the homemade chain? And does it jam often?
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#4 pat 1st Lt

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Posted 14 August 2006 - 08:55 PM

Replacment chains were made using Copper pipe and canvas bands,which are expandable with snaps.


I'd love to see that! Sounds like a solid alternative to posting flyers and newspaper adds for '!!!Nerf Chain Gun Ammo: Will Pay Big Bucks. SELL NOW, MAKE CASH!!!', which actually did work. It just took a couple months, and we only got three replys, but we scrambled together a respectable chain.


If I were you, I'd be worried about that ROF. 3 DPS? That sounds too high for a Razorbeast. Also, if this is going to be an 'Emplaced Machine Gun' as your title suggests, Do you really need a ROF that high? In my oppinion (Which admitedly counts for very little), 1 DPS is sufficient enough to keep people at bay. I'm assuming that since you're using home-made chains that you have rechambered them to fire micros. I am also assuming that since you are using micros, you are getting upwards of 60' in range. I'm also assuming that you're using this outside.

Based on my baseless assumptions, you would not need more than 1 DPS to effectivley halt any rushes, and keep people at bay. A lower rate of fire helps you control shot placement, and conserve ammunition. What actually would be best, is an on-the-fly variable ROF. THat'd be very, very helpful. So when they're rushing, you can blast away at 3 or 4 DPS, and when you've got one or two guys inching their way twoards you, you can put just one or two shots in their direction.



Very nice job though. I love the idea.


Almost forgot: With copper tubing, you must be having some feeding problems with the gun, unless you have an assistant gunner helping you. Take a cue from Starbuck and rig a coat hanger with a piece of copper or PVC as a roller, and atatch that to your gun to take some of the weight off of the advancing mechanism.


All in all, it's a great start. I hope you have fun with that beast (Tee hee... That's a funny pun.)


Sincereley,
Pat
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It gave the site a sort of 'homy' feeling.

Did you know that "m" can sometimes look like "rn" when read quickly?

#5 Der Exilen

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Posted 14 August 2006 - 09:14 PM

Thus far it has worked OK. the idea that it was "Emplaced" is because i'm using it as a bunker gun,spitting fire at those who rush. the forest behind my house is rife with strange trenches/streambeds and such (most of which have been bunkerized) and i needed something that could spit quick and then stop. As for barrel jams,yes. i do occasionally have a jam or two,but not heavy. I also have a tin ammo box (taken straight off an M60,the inspiration,no less.) which stores the belt when i'm not using it. she really flies. Another alternative may be to modify a chainblazer or rototrac to work the same way. I'm still firing megas.
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#6 NiteWalker

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Posted 14 August 2006 - 09:36 PM

How many darts can you shoot until your chain is empty? And what is the range? I've always wanted to have something like this when I saw the razorbeast, but I don't have one. Maybe someone could come up with something like this on another gun?
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#7 Der Exilen

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Posted 14 August 2006 - 09:47 PM

The chain's design is simple. Rivet a grommet into the canvas on either side,Attach a band on the tubes (which are based loosely on a set of buzz bee toys' ejector shells,just scaled up for megas. and then put a rivet on either side. At each end (i used 15 round belts like the original) put on each end of a snap. i have approx. 60 rounds to play with until i have to switch to my rifle (formerly firefly,now ratchetblast) i was lucky that when the fire at my house happened a few years ago my basement was saved,saving my long-lost razorbeast. when i went scoping through stuff to see what was left,i found it. no chain or darts though. it took some time to get it all right.
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The revolution will not be on your iPod.
The revolution will not be on CNN
The revolution will not cost $.99 a song.
The revolution will not be on the atkins diet.
The revolution will free us all.

Extension of a poem by gil-scott heron.

#8 davidbowie

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Posted 14 August 2006 - 10:52 PM

It sounds pretty cool. Pardon my lack of electronics knowledge, but would you need anything more than a simple pot to control the ROF? That would be pretty cool.
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#9 LiterSize

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Posted 14 August 2006 - 11:21 PM

Here's a non- powered version, if anyone wanted to see it. Good times....

http://nerfhaven.com...wtopic=4087&hl=


Credit to starbuck on that...
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#10 LastManAlive

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Posted 14 August 2006 - 11:42 PM

I want pics, videos, and a write-up of the chains. I'll beleive, trust me.

I beleive it gets at least 5 feet.
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#11 Der Exilen

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Posted 15 August 2006 - 11:38 AM

LMA the gun gets ten feet spot on,then it starts to drift a lot. But what do you expect with that kind of power? Think original gatling gun VS M60A1 minigun here. There's no comparison in the improvement but the gun itself is still not without it's flaws. As for video....Not happening. my lil brother dropped the video camera skateboarding and smashed it into about 40 diffrent pieces.
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The revolution will not be on your iPod.
The revolution will not be on CNN
The revolution will not cost $.99 a song.
The revolution will not be on the atkins diet.
The revolution will free us all.

Extension of a poem by gil-scott heron.

#12 pat 1st Lt

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Posted 15 August 2006 - 12:02 PM

LMA the gun gets ten feet spot on,then it starts to drift a lot. But what do you expect with that kind of power? Think original gatling gun VS M60A1 minigun here. There's no comparison in the improvement but the gun itself is still not without it's flaws. As for video....Not happening. my lil brother dropped the video camera skateboarding and smashed it into about 40 diffrent pieces.


Wait... So, are you saying that it's accurate out to ten feet, or it only gets 10 feet of range? Because even for a Razorbeast, 10 feet is pittiful.

I'm surprised that you don't ahve trouble with the advancing mechanism. I'd think that with copper pipe, it'd be a lot worse. Also, I'd advise you to switch to micros. I really like megas, but for a gun with very limited power, and when you're trying to get every last inch of range to match your excellent ROF, micros are a better choice.

If this isn't meant to be particularly mobile, I'd suggest doing what Starbuck did (but didn't take a picture of in his thread). Make a sort of shield. Preferably netting of some kind, that would fit on the gun and give the gunner a fair amount of protection while he's gunning. I think that'd be an excellent addition to your Beast.



Sincereley,
Pat
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QUOTE(euphemism) View Post
QUOTE(Pat) View Post

It gave the site a sort of 'homy' feeling.

Did you know that "m" can sometimes look like "rn" when read quickly?

#13 Lancaster

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Posted 15 August 2006 - 03:12 PM

I think some pictures would be nice, even if you have to take them with a cellphone or something. I really want to see this.
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#14 SofaKing

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Posted 15 August 2006 - 08:57 PM

I used a cordless drill (davidbowie's idea) on mine but the skip factor was too bad to be useful .Nerfhq link.

Edited by SofaKing, 15 August 2006 - 09:08 PM.

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