Instructables

The Ultimate Nerf Vulcan Mod

Picture of The Ultimate Nerf Vulcan Mod
We made a NERF chaingun fire about as fast as a 7.62mm M60 Machine gun. That's around 500 rounds per minute (RPM). We did two major modifications, increasing the voltage to the firing motor, and adding a round counter and a paint job.

The total cost on this hack was about $79

 
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Step 1: What You Need

Picture of What You Need
For this modification, you need the following:

Upping Voltage:
  • 1 x Nerf Vulcan EBF-25 ($50)
  • 2 x 9.6v battery packs
  • 2 x 9.6v battery pack connectors (RadioShack)
  • 2 x Alligator clips
  • 3 x Wire nuts
  • 1 x Ballpoint pen
  • 1 x Chopstick
  • 1 x Mana Energy Potion
  • 1 x A hint of stupidity

Painting/LED Mod:
  • 1 x LED counter from QKit ($18)
  • 1 x Lever/Roller microswitch
  • 1 x LED
  • 3 x Momentary pushbutton switches
  • 1 x 12v miniature battery
  • 1 x Coil of wire
  • 1 x Various paints

Step 2: Cranking It Up

The first modification was to increase the voltage to the motor. More voltage with available amperage means a faster spinning motor. Faster motor means more rounds down range, or into a co-workers face, as the case may be.
The Nerf Vulcan EBF-25 starts with a requirement for 6 D-Cell batteries. That's an expensive number of big cells. When wired, they yield about 9v.
To connect the battery packs to the gun, we actually had to make a little tool. The power terminals are too deep inside the gun to clip on the alligator clips, so I took apart a ball point pen, slit up the side, put a compressed alligator clip in it with the lead hanging out the slit. I put the alligator clip on the battery terminal and then pushed a tie-wrap (or chopstick) through the back of the pen, slipping the alligator clip out and hooking it on to the power terminals. it worked like a charm.

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johnstat00012 days ago

Wow! Sooner or later someone will make a gasoline powered nerf gun and the world will end... =)

Is there a way to complete this mod by vamping down the voltage (slightly) so as to get a rapid fire rate without risking burning out the motor? Any forum on this?
zeke345 years ago
Ever thought of hooking it up to a power outlet? It'd only last for a few seconds but I'm sure you could get more that 500RPM out of it.
ManaEnergyPotion (author)  zeke345 years ago
Power outlets are AC, batteries are DC. Unfortunately, if we hooked it to a power outlet it would fry before it even got a shot off :-) Fun idea though. It would at least by arc-tastic
If you wired a rectifier (or is it inverter) before the gun it would convert the A/C current into D/C. Though the 120V might be just a little too much for the gun to handle.
build a step down transformer? 1000 wire wraps on one side, 200 on the other. goes from 120V to 24V then add a rectifier. Should last more than 30 seconds if used in moderation. :P
GENIUS!!!

The best I could think of is to get a bunch if resistors and make a wish.
you would need, a variac and a full bridge rectifier,. put the rectifier on the output, and then crank it right up!!
you rock!
how do you mod the newer vulcan?
Why don't you rip a motor from a vacuum and stick it on the gun?
nah it would only spark once maybe twice thats about it but from what I learned once you let the smoke out it stops working I hate it when that happens there is a way if you would really want to take the time to convert ac to dc but that requires a bunch more circuit crap and I dunno where to find the diagrams for that but if someone does do it definitely tell me about it I gotta see that
Use one of those brick-transformer-adapters to convert from AC to DC, and put a space around the motor to hold some dry ice, or at least a fan and a heat sink!
i used 2 18v batteries in series (36v) it fried the resistor inside so i opened it up ,removed the resistor, and made a solder bridge the motor lasted about 30 seconds before the brushes melted. It shot so fast that the bullet could not get a quarter of the way down the barrel before the next bullet fired so the gun just jammed
Set2712 years ago
Wow, looks like fun all around. Even Sheldon couldn't say you're having fun wrong! Stay young and live forever guys...and gals of course.
SinAmos2 years ago
SHADOW advertising. Zzzzzzzzzzzzzzzzzzzz. I actually thought this was real.
SinAmos2 years ago
SHADOW advertising. Zzzzzzzzzzzzzzzzzzzz. I actually thought this was real.
very cool dude is there any way for it to hold more bullets
Rebreg2 years ago
You should modifying the dart holder to hold more darts
ralchin2 years ago
I cant find battery pack connectors ANYWHERE on the internet. Could someone pls give me a link? Btw i live in australia so i need it to have shipping available here.
woops! sorry I read your comment half way dude sorry! :(
dude go to radio shack, or go to the shack they have everything!
Try Jaycar, if there are any shops near you.
~Meme~ ralchin2 years ago
I live Australia too, so check hobby stores.
MSgt_JGC2 years ago
WOW! I am only 13 and this guy is like 30+ and I solder like a pro.
Go_Vikings2 years ago
Thats AWESOME!
nof-z2 years ago
at our band camp, we have a nerf war, an now i know how to survive!!!
That is beast.
Conrad7173 years ago
i know this post is old but could you modify a step counter to do this?
hey,manaenergypotion
plz make a instrustable for a motion sensor vulcan
thnks
In step two which sides are oosirive and which sides are negative?
What part started melting? Was it the motor or the batteries?
the motor. If you put too much energy though a motor the bushings will burn and it will stop working. The batteries might burn in a short circut.
Could you solve that by replacing the motor with a faster one?
Yea, but its more fun working around that. Like adding a super gearing system. But I could make this be such a beast if I used that 4 cycle multi weed wacker/edger/blower/tiller/ect with the air compessor..........
Hows about a cheap battery dremmel motor ? Those things and their gear boxes spin at upwards of 3000rpm and sounds like a dentist drill....
What about an electric drill motor? :D
I think that the darts would melt on the way out of the barrel....O_o
Drills dont get that hot. And I doubt the air resistance would melt the darts. But would the gears take it?
that's what I was talking about. the gears would probably heat up a ton.
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