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Registered Member #190
Joined: Fri Feb 17 2006, 12:00AM
Location:
Posts: 1567
Is anyone aware of the largest home-built coil gun on this or another forum? I've seen small ones that shoot small pieces of metal across a room. I'm curious if anyone has built one that can cause serious damage.
Registered Member #162
Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3140
IamSmooth wrote ...
Is anyone aware of the largest home-built coil gun on this or another forum? I've seen small ones that shoot small pieces of metal across a room. I'm curious if anyone has built one that can cause serious damage.
(I'm not talking about the Navy's)
The first shot from my first coil gun nearly killed my son, he almost died laughing at how pathetically weak it was !
Registered Member #2906
Joined: Sun Jun 06 2010, 02:20AM
Location: Dresden, Germany
Posts: 727
Yeah, true... the easy CG-Designs just suck. Also on Youtube.. if you watch Jason Murray (most successfull coilgunner on youtube i guess), the views are only driven by the appearance.. not technical data or capability. Shooting at stuff that breaks easily anyway makes a good video.. but anyone with a brain knows how pathetic it actually is. However he got 25J which is not too bad at all.
Registered Member #11591
Joined: Wed Mar 20 2013, 08:20PM
Location: UK
Posts: 556
I have eight 3300uf, 400v capacitors and intend to make a 1200v 2200uf bank out of 6 of them, but the large size of the bank makes a coilgun somewhat impractical.
Registered Member #54278
Joined: Sat Jan 17 2015, 04:42AM
Location: Amite, La.
Posts: 367
hen918, I would go for it--I don't think 1200v will be problematic--but I assume that is not your worry. I have a batch of electrolytics: 10,000uF 450v (525V surge with heavy duty terminals) and was thinking of doing that three-in-seies type configurations with 1200v to 1450v. Mainly I am curious about coilguns with higher voltage electrolytic banks energizing magnet wire coils. I also have some 6800uF and 6200uF @ 450vdc.
Have you ever known of energy storage caps (or any other than 'lytics) used in coilguns?
Registered Member #2906
Joined: Sun Jun 06 2010, 02:20AM
Location: Dresden, Germany
Posts: 727
May i ask why somwething else would be desireable? You can use big foil caps of course. but why would you... Caps (electrolytics) are not the limiting factor.
There was one guy here who used nonpolar caps and got highest efficiency figues (20% ?) ever seen in this forum at room temperature. But this was due to a novel design and creativity. He called every SCR-based design as "monkey-design" which raged everyone red hot . but well... he was just right.
Registered Member #42796
Joined: Mon Jan 13 2014, 06:34PM
Location:
Posts: 195
DerAlbi wrote ...
May i ask why somwething else would be desireable? You can use big foil caps of course. but why would you... Caps (electrolytics) are not the limiting factor.
There was one guy here who used nonpolar caps and got highest efficiency figues (20% ?) ever seen in this forum at room temperature. But this was due to a novel design and creativity. He called every SCR-based design as "monkey-design" which raged everyone red hot . but well... he was just right.
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large coil gun
. but well... he was just right.