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We all love coilguns

 
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Alexander125
HG Master


Joined: 13 Jan 2009
Posts: 105
Location: Galati, Romania

PostPosted: Tue Apr 14, 2009 1:08 pm    Post subject: We all love coilguns Reply with quote

I fell in love with coilguns when I first saw the EM-15 on Youtoube.
I think I am speaking for all when I say that it't the coolest thing I've seen.
I want to build one out of some single use cameras.
Take out the caps, put them in paralel,add a coil and an SCR and BOOOM.
I need advices please.
Thanks in advice.
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Alan
Site Admin


Joined: 29 Jan 2006
Posts: 1399
Location: Winnipeg, MB

PostPosted: Wed Apr 15, 2009 9:00 am    Post subject: Re: We all love coilguns Reply with quote

Alexander125 wrote:
I fell in love with coilguns when I first saw the EM-15 on Youtoube.
I think I am speaking for all when I say that it't the coolest thing I've seen.
I want to build one out of some single use cameras.
Take out the caps, put them in paralel,add a coil and an SCR and BOOOM.
I need advices please.
Thanks in advice.


You could have a look at this project. There should be enough details that you could build your own.
http://www.electronics-lab.com/projects/science/017/index.html
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Alexander125
HG Master


Joined: 13 Jan 2009
Posts: 105
Location: Galati, Romania

PostPosted: Wed Apr 15, 2009 10:56 am    Post subject: Reply with quote

I've seen it.
It's exactly what I want to build.
Going with more than 4 caps prelongues the mag pulse slowing down the bullet.
I want a 2 -stage gun with an optocoupler like that one at the contest to power the second stage coilgun.
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Alexander125
HG Master


Joined: 13 Jan 2009
Posts: 105
Location: Galati, Romania

PostPosted: Fri Apr 24, 2009 1:39 am    Post subject: Reply with quote

It's 3/4 done. I need a bigger coil. I've got some 15 Awg wire that I took out from an old transformer. I wound it on a small glass tube.
Nearly done. I want to add another 400V 470microfarad cap and another 330v 160 microfarad photo flash cap.
I also added a big old russian(yes russian) diode that can handle 2,5 KA reverse and 1.5 KA dead short.
After all the diode came out of an old batery charger as well as the transformer.
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Alan
Site Admin


Joined: 29 Jan 2006
Posts: 1399
Location: Winnipeg, MB

PostPosted: Fri Apr 24, 2009 6:48 am    Post subject: Reply with quote

Alexander125 wrote:
It's 3/4 done. I need a bigger coil. I've got some 15 Awg wire that I took out from an old transformer. I wound it on a small glass tube.
Nearly done. I want to add another 400V 470microfarad cap and another 330v 160 microfarad photo flash cap.
I also added a big old russian(yes russian) diode that can handle 2,5 KA reverse and 1.5 KA dead short.
After all the diode came out of an old batery charger as well as the transformer.


Sounds like a great exercise in recycling. Smile
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Alexander125
HG Master


Joined: 13 Jan 2009
Posts: 105
Location: Galati, Romania

PostPosted: Sat Apr 25, 2009 5:44 am    Post subject: Reply with quote

it's done
it can fire a half-inch screw quite far and fast.
i didn't use the 470 uf cap anymore
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Alexander125
HG Master


Joined: 13 Jan 2009
Posts: 105
Location: Galati, Romania

PostPosted: Sat Apr 25, 2009 11:41 am    Post subject: Reply with quote

hey. got some pictures. just been a big earthquake (gotta be 5.5 on the richter scale) anyway here you go http://s713.photobucket.com/albums/ww132/Alexander200/?action=view&current=DSC01169.jpg
http://s713.photobucket.com/albums/ww132/Alexander200/?action=view&current=DSC01170.jpg
http://s713.photobucket.com/albums/ww132/Alexander200/?action=view&current=DSC01172.jpg
http://s713.photobucket.com/albums/ww132/Alexander200/?action=view&current=DSC01173.jpg
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Alan
Site Admin


Joined: 29 Jan 2006
Posts: 1399
Location: Winnipeg, MB

PostPosted: Sat Apr 25, 2009 12:23 pm    Post subject: Reply with quote

Looks good. Any videos of it in action?
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Alexander125
HG Master


Joined: 13 Jan 2009
Posts: 105
Location: Galati, Romania

PostPosted: Sun Apr 26, 2009 11:42 pm    Post subject: Reply with quote

not just yet. a few glitches to sort out and then i'll post it.
I wanna add another stage coz I already have 2 separate coilguns.
Just need to hook them together with an optocoupler.
Where can I find SCR's? i need a couple for my project.
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