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Registered Member #1805
Joined: Sat Nov 08 2008, 06:29AM
Location:
Posts: 67
hotcrazyfruit wrote ...
Have you tried using a dril press? with the rail assembly in a perpendicular jig? i beleive you could do that. but the router idea might not work. because the round coil projectile, would only contact at one very small point on the projectile. which may cause welding if you decide to upgrade the bank. i still think you should go with drilling a hole between them.
Ok, I might try again but I'll have to make up a bracket to hold it once I made it, I destroyed my old railgun trying to drill a hole through it.
Registered Member #1062
Joined: Tue Oct 16 2007, 02:01AM
Location:
Posts: 1529
That would only work if the copper is separated by the thickness of the blade. I suggest drilling a hole, and cutting it in half. Get a rod the same diameter as the hole, and keep cutting till the slit is wide enough.
banned on 5/26/2009 Registered Member #1877
Joined: Mon Dec 22 2008, 02:03AM
Location:
Posts: 147
a 1mm projectile will be very small, it will saturate very quickly, saturation is when a farrace material becomes so "saturated" with electro magnetism, and cannot become any more saturated. meaning there is a limit on the acceleration of the projectile, untill you start using more dense projectiles, or larger projectiles. the other option to eliminate this saturation limit is to split the discharge among multiple stages, this can be done via led and a photo transistor, and an SCR to trigger each succeeding stage. i would recommend you do this if you are using a small projectile. make sure you get the sttachment, its my program i made in turing, feel free to distribute to every one else. make sure that all calculations may be slightly off, and that there are other losses other than the ones you input. xD. good luck. ]coilgun.zip[/file]
Registered Member #1805
Joined: Sat Nov 08 2008, 06:29AM
Location:
Posts: 67
hotcrazyfruit wrote ...
a 1mm projectile will be very small, it will saturate very quickly, saturation is when a farrace material becomes so "saturated" with electro magnetism, and cannot become any more saturated. meaning there is a limit on the acceleration of the projectile, untill you start using more dense projectiles, or larger projectiles. the other option to eliminate this saturation limit is to split the discharge among multiple stages, this can be done via led and a photo transistor, and an SCR to trigger each succeeding stage. i would recommend you do this if you are using a small projectile. make sure you get the sttachment, its my program i made in turing, feel free to distribute to every one else. make sure that all calculations may be slightly off, and that there are other losses other than the ones you input. xD. good luck.
I must have written it wrong... the projectile is 5mm diameter and 30mm long with a 1mm tube of alluminium that wrappes around the projectile like in the pics and thanks for posting the app I'll have a look at it now.
banned on 5/26/2009 Registered Member #1877
Joined: Mon Dec 22 2008, 02:03AM
Location:
Posts: 147
ahhhh i see. sorry for the long and boring explanation :\ lol. that sounds alot better than 1 mm. if you decide to ever increase the power though, remember to always move to a larger projectile or split the discharge among multiple stages. and have fun with the app, i use it all of the time for my coil guns / rail guns. cheers,
Registered Member #1062
Joined: Tue Oct 16 2007, 02:01AM
Location:
Posts: 1529
Not to put you down, but that app seems kind of pointless to me. You need to know the information in the first place to get your input value( projectile speed, joules). Keep at it, and you can make some nice programs. I made one awhile back, some fields are extra ( I use it to export data) but the formula's are right.
I am kind of confused by this thread, all i see is a railgun, but no coilgun.
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coil + rail gun
