The total cost on this hack was about $79
Step 1: What You Need
- 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
- 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 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.
Step 3: Wiring the Beast
Step 4: Adding the LED Round Counter
Step 5: Add the Counter House
Step 6: Paint the Gun
Step 7: Attach Round Counter to Finished Gun
Step 8: Fire Away!
You can check out the video of our gun in action here:
We are also giving away a 12-pack of mana to the first person to send us a video of getting this gun past the elusive 600RPM mark. Details are in the video. ****UPDATE***** Someone already won the contest. Thank you everyone for trying!
1) We're not affiliated with Nerf, Radio Shack, QKits, Dremel, or anything else you saw us use to build this. Mana Energy Potion is the exception, because that's who we are.
2) There's a very real danger to doing this mod. Dead-shorting battery packs like these can cause them to explode and injure you. Nerf even has a "Do not modify this dart blaster" warning on the gun itself. That's where we used the Dremel to cut out the panel for the LED counter.
3) You will probably ruin your Nerf dart blaster. We could smell the motor burning when we fired it with 4x the voltage. Eventually, the motor coil will probably melt. Also, the gears will probably strip out.
4) Don't paint over your orange tip. That's illegal as far as we know. Fortunately, the orange tip is separate, so you can paint your gun and then attach the orange tip.