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Originally posted on March 1, 2016 @ 7:10 am

This Guy Made A Portable 1.25kJ Coilgun

Jason Murray built this 1.25kj coilgun and full-auto gauss gun back a few years ago so there is a chance you might have seen these already. If not – here you go. Jason also has a website showing you exactly how he built this 1.25kj coilgun – you can check it out here. You can also check out how the full-auto gauss gun is built here. After this check out how to make your own drift trike.


This Guy Made A Portable 1.25kJ Coilgun

“A coilgun fires a projectile with magnetic force instead of gunpowder. The projectile from this gun won’t kill a person, but the electrical energy stored in the capacitors is 78 times the lethal amount for human beings so this is no toy.”

Some technical data:

– Action: single stage, bolt
– Weight: 7.75lbs or 3.52kg
– Power supply: 12V NiMH battery (needs recharge after ~15 shots)
– Charging: 40 watt regulated ZVS flyback driver (charge time ~30s)
– Capacitor bank: 4x 3900uF @ 400VDC
– Stored electrical energy: ~1.25kJ
– Switch: SCR
– Body: lightweight ABS plastic pipe and sheets

Performance Data:

– Muzzle velocity: 39.2m/s
– Projectile mass: 32.8g
– Kinetic Energy: 25.20 J
– Output efficiency: 2.02%


CG33 Coilgun Design & Construction Pics



Full-Auto Gauss Gun




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