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Multiple Stage Coilgun
Results and Videos

Two, Three, and Four Stage
Source Energy :    Joules           V      Farads
                                   608   J    400v       7,600 uF
                                1.216 KJ      400v     15,200 uF
                                2.432 KJ      800v       7,600 uF
                                1.216 KJ      800v       3,800 uF

Terminal view :        Bank 1:   400v @ 7600 uF   Bank 3:   400v @ 7600 uF
                       Bank 2:   400v @ 7600 uF   Bank 4:   400v @ 7600 uF
                                 Bank 5:   800v @ 3800 uF

Projectile : Kinetic/Source Volts Eff% Velocity Weight Length Dia. Stages Date

         # 1               24 J    1,824 J    400v                  1.3 %      44.0 m/s      26 g        7.1 cm      8mm     3    16 Feb    2004
         # 3                 19 J    1,824 J    400v                   1.1 %       54.0 m/s      13 g        3.7 cm      8mm     3    20 Oct    2003
         # 4               19 J    1,824 J 400v    1.1 %       46.0 m/s      17 g      5.5 cm      8mm   3    16 Feb    2004

                             ------------------------------------------------------Cannon----------------------------------------------------------------
       # 10     WIP    41 J    2,432 J     800v                   1.7 %       23.6 m/s    147 g       16.2 cm    12 mm    1    04 May   2005
   # 10           22 J    1,216 J     400v    1.8 %       17.4 m/s    147 g 16.2 cm    12mm   1    02 May   2005
   # 10                 24 J    1,216 J     400v 2.0 %       18.1 m/s    147 g     16.2 cm    12mm     1    02 May   2005
       # 10               62 J    2,432 J     400v             2.5 %       29.0 m/s    147 g       16.2 cm    12mm     2    02 May   2005
       # 10                66 J    2,432 J     400v 2.7 %       30.0 m/s    147 g       16.2 cm    12mm     2    02 May   2005

                              ------------Stage 1: 400v system--------Stage 2: 800v system---------Stage 3: 800v system------------------
       # 10    WIP     88 J    3,258 J 385v:750v             2.7 % 34.6 m/s    147 g     16.2 cm   12mm     2     06 May   2005
       # 10    WIP   127 J    4,508 J 400v:760v: 760v   2.8 % 41.1 m/s    147 g     16.2 cm   12mm     3 07 May   2005

Trigger :       SCR                                                Qty      Price                   Mfg.
                          1   1000v 40A-rms 540A surge     4 per bank    $2.90 each        Teccor
                              2     800v 70A-rms 950A surge           3 per bank    ~$5.00 each     Teccor
                              3   1000v 65A-rms 950A surge           4 per bank    ~$5.00 each     Teccor

Coil:              # 3 Dimensions(in,out,length) 0.9 cm, 3.0 cm, 5.0 cm
                           # 10 Dimensions(in,out.length) 1.3 cm, 4.6 cm, 13.50 cm

Quick Videos:

3 Stage	4 Stage	7-Day CG Cannon
#12 3 Stage projectile #3 can	#19 4 Stage Can exit hole	#59 24J
#13 3 Stage display	#20 4 Stage potato and can	#60 65J 2 cans High / Low Res.
#14 3 Stage portable preview	#21 4 Stage entrance hole	#61 127J Phone book High / Low Res.
#16 3 Stage 1 layer	#22 4 Stage 2 potatos 2 cans	#62 127J 4 Cans/Potatos High / Low Res.
#17 3 Stage 2 layer