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T O P I C     R E V I E W
Member # 4481
 - posted November 05, 2005 16:49
I've been reading behind the principles behind how railguns work, like the lorenz forces and the like.

I'm wondering is it possible to do this on a small scale for experimental purposes?

All the ones i've seen designs for on the net are quite big and use a microwave oven transformer and a huge capacitor bank for power. This looks really dangerous.

I'm also wondering how i can get around the problem of needing to get the armature onto the rails at speed so it doesn't just weld onto the rails.

I suppose pretty much every geek as tried to build a railgun at one time or another.
Member # 2765
 - posted November 05, 2005 18:02
Most of the designs I've seen use a pneumatic injector to get the slug moving.
Member # 966
 - posted November 06, 2005 02:34
I saw something on the net where you could make one on a tabletop with a battery. It used tin foil for the rails, and was probably linked from Fark.com.

EDIT: Here you go!
Member # 780
 - posted November 06, 2005 07:21
Very cool link, littlefish!
Member # 2590
 - posted November 06, 2005 15:05
Do some searches on hackaday.com, I think they had some good stuff from a while ago. this is a recent one Rail gun
Member # 4481
 - posted November 07, 2005 00:12
Very cool. I'll have to get some magnets and give it a try.

I wonder how fast it would go if i used an old flash unit as a power source instead of a 9 volt battery.
Member # 4544
 - posted November 07, 2005 17:35
some person in scotland built one that fired a shell at mach 6
The real Stealth
Member # 4615
 - posted November 15, 2005 19:49
I found the basic concepts in the book "24 gadgets for the evil genius" I think the book is available at ThinkGeek: Electronicgadgets for the evil genius . I havent gotten around to building the contents of the book yet but I plan on soon. I also plan on experimenting with the base design to see how powerful I can make it. The basics of the design are:
  • PVC tube (guide rail)
  • Wire Coil in retaining plate (accelerator)
  • High Energy Pulsar (instructions included in the book)
I recommend checking it out.

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