ULTIMATE Lego Chaingun . Keywords: Chaingun Minigun Gatling Vulcan Cannon Machine Gun Guns Working Firing Rubber Band Fully Automatic Full Auto Fullauto Repeating . WATCH THE VIDEO
Ultimate Lego Chaingun
There’s certainly nothing “Mini” about it.
8 barrels, 64 (+) shot capacity, up to eleven rounds per second continuous fire rate.
Lego warfare will never be the same again.
The motor driven barrels start winding up to speed at the flick of a switch on the handle. Pulling the trigger unleashes a stream of rubber bands, deluging the target. The fire rate is high enough that at least half a dozen bands are in the air at any one time – the gun appears to fire a single very long chain of them. It’s as much like using a hose pipe as firing a rubber band gun. It also sounds fantastic because each mechanism makes a distinct click as it discharges a rubber band.
This is the biggest Lego project I have ever under taken – I’ve spent a over a month developing and building this. The firing mechanisms proved a massive challenge and required a huge amount of refining before I was able to actually put the whole thing together. They had to support the tension of a number of large elastic bands, and yet remain very sensitive. If the firing levers are too stiff, a large drag force is created on the spinning barrels and the Lego motor doesn’t have sufficient torque to maintain high revs and will stall quite quickly.
The gun is 96 studs long – that’s 69 cm / 27 inches. This makes it somewhat less than portable or “tactical” – wielding it is more “UT2004” than “Counterstrike”, but that’s great, I mean who hasn’t wanted to re-enact Doom with a chaingun of their own? It’s rate-of-fire is sensational. The ability to carpet a room in rubber in a few seconds is wonderful. Unlike commercial hand-wound rubber band Gatling guns, this has a trigger and can be fired both continuously or in short bursts (though I must admit, the desire to empty the entire thing in a single long burst with a cry of “Suppressing Fire” is normally too strong to ignore.)
Potential modifications could include increasing the fire rate and decreasing the wind-up time by hooking up two battery packs to the motor, doubling the voltage. The thing could also be made more compact by altering the location and spacing of the barrels. With less girth, it could be more akin to a heavy machine gun, as opposed to a mounted support weapon – it could have a stock, a carrying handle, etc. Those sort of modifications are infeasible, given its current size. I included sights as an after thought – they’re totally superfluous, but it’s cool to look through them. An ammo counter would be potential add-on. I used to make clip-on modules for my older guns which counted backwards each time you pulled the trigger. This was easy as they held less than a dozen rounds. Counting back from 64 would prove difficult as it would have to activate in proportion to the speed of revolution and only when the trigger was pulled. A red LCD display from, for example, an alarm clock, would be fantastic, but a simple gauge or meter might be more realistic.
Using different rubber bands and changing the barrel length would allow alternatively for more power or a greater capacity. It currently takes 115 x 6 mm bands tied together in pairs. A gun made for smaller bands could be considerably smaller and lighter. It could also fire them faster. Eight barrels holding 20 small bands each would store 160 bands in total – that’s 15 seconds of continuous firing at the present fire rate. My current choice of band is aimed to balance capacity with power. It is considerably less powerful than some of its single-barrelled predecessors, but then it does feature the most sensitive escapement mechanisms I’ve ever made.
Flawless it is not, but a masterpiece it is indeed. I don’t yet know how I’ll ever be able to follow it up, but who knows? – I though this project would never succeed. There are a fair few other Lego gun concepts I’d like to realise.
He who dares wins.
Seb MJ Dick
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