SRCG-200

OVERVIEW / DESIGN / CONSTRUCTION / PERFORMANCE

The SRCG-200 is an effort to make a simple Compact 3D Printable single stage coilgun and and create an easy to follow instruction set so everyone has the easiest path to create one of the coolest hobby projects I know of.

There are still a few issues to get right but I plan to create a better more comprehensive instructable when finalized.

Design 3D Model

STATS:

  • General:
    • Designation: SRCG-200
    • Name: Simple Reluctance Coilgun 200
    • Stages: 1
    • Design Type: Compact Handgun
    • Loading Type: Front-Loader
    • Switching Type: SCR 3 x BTA41800B
    • Clamp Diode: 1 x RHRG75120
    • Topography: Standard Protection Flyback Diode
    • Trigger: Simple Push Button Trigger
  • Charging:  4S Lithium Polymer Cells
    • Pack Nominal Voltage: 14.8V (16.8V Max)
    • Pack Rated Capacity: 850mAh
  • Coil Description:
    • Main Accelerator Design:
      • Wire Size: 20 Gauge
      • Length: 31 mm ( +-1 mm) (1.22 in)
      • Layers: 10
  • Capacitors:
    • Primary Accelerator-
      • Capacitance: 1000 uF
      • Voltage: 450 VDC ( Charged to 500 V)
      • ESR: ~120 mOhm
      • Mfr #: B43630A5108M000
  • Projectile:
    • Projectile Material: Low Carbon Steel 1018
    • Diameter: 9.525 mm (3/8 in)
    • Length: 20 to 30 mm ( +-1 mm) (1.22 in)
    • Mass: 10 to 16 g (+-1 g)
  • Measured:
    • Max Exit Velocity: 38 m/s (About 30m/s Typ.)
    • Load Time: ~4s (Fully Charged Batteries)
    • Goal Calculated:
      • Accelerator Stored Energy: 125 J
      • Kinetic Energy: 7.2 J
      • Max Efficiency: 5.7 %
      • Momentum: 0.38 kg*m/s
      • Charger Power (New Batteries): ~30 W
    • Details:

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