SDPA-I

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SDPA-1

 Status: Completed 2007

A simple coilgun made without any workshop tools or custom pieces. Scavenged from an old laser tag toy gun.

Videos:

SDPA-1Vid1.AVI

 STATS:

• General:

• Designation: SDPA-1
• Name: Small Diameter Pulse Accelerator I
• Stages: 1
• Design Type: HandGun
• Loading Type: Muzzle Loaded
• Switching Type: 12V Relay
• Charging-4 AA (3V Total)
• Relay-1 9V (9V Total)
• Charger Type: 1 Camera Circuits
• Coil Description:
  • Layers: 7
  • Wire: 22 gauge
  • Length: 33 mm
  • Inner Diameter: 6.5 mm
• Capacitors:
  • Capacitance: 1320 uF
  • Voltage: 350 VDC
• Projectile:
  • Projectile Type: Machined Steel Nail (Not Standardized)
  • Diameter: 3-4 mm
  • Length: 20-30 mm
  • Mass: 3 g
• Measured:
  • Exit Velocity: 35 m/s
  • Fire Rate: 1.25RPM
• Calculated:
  • Stored Energy: 80 J
  • Kinetic Energy:  1.8 J
  • Weapon Efficiency: 2.2 %
  • Momentum: 0.11 kg*m/s
  • Charger Power (New Batteries): 2W