Make a poweful (green) railgun!

Step 3 Make the bank

Now its time to assemble the bank. Depending on the power you plan to use, you need the be carefull about the layout. All positive and negative connections will repel. sometime enough to force them apart. Arange your capacitor's to the desired configuration. Make sure all the terminals are parallel. Lay your bus bar, cut to length, next to one row of terminals. Mark there location on the bus bar, and measure in to te center. Take a nail, and hammer a inprint onto each of these points. Take all you cut to length bus bars, and stack them up. Put some layers of tape around it to hold, with the marked one on top. Drill through the bars STRAIGHT! Untape all of them, and sand the bus bars, as well as the capacitor terminals. This is important, as i discovered, the oxide laer that forms is enough to cause a bad connection, and exploding bus bars. Screw them all on. I used a corrosion (conductive!) inhibitor (kopr-shield) o prevent it from oxdizing again.

Now take another bar, and lay it perpindicular to the bus bars. Mark each alternating bar, and drill. Cut some squares to elevate the bar, and connect the bar to alternating bars to connect the rows in parallel.

Charge the bank with a 9 volt battery to test if there is any shorts.
The main page picture shows this well

Comments

[Aligaga]

Hi,
great project!
Do you know where i can buy these capacitors?

Thanks and greets

[hobohitler]

you can get them at the electrostore.com just type 400V 3900uF