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coil guns

Unread postPosted: Fri Aug 05, 2005 9:41 pm
Author: milty
has anyone ever bult a coil/rail gun before, and if so do you have any pointers for one made out of a camera flash??? how do i get multiple flashes to fire sequncially??

Unread postPosted: Fri Aug 05, 2005 10:31 pm
Author: boilingleadbath
I have not made one.
You could use photogate activated transistors... I don't know.

Unread postPosted: Sat Aug 06, 2005 6:49 pm
Author: milty
what's a
photogate activated transistor
?

Unread postPosted: Sat Aug 06, 2005 8:45 pm
Author: saladtossser
or a contact sensor, easier. the projectile goes half way into the coil, then it trips the sensor and the coil turns off so the projectile will keep going instead of staying in the coil

Unread postPosted: Tue Aug 23, 2005 12:32 am
Author: Darkerweb12
A 'photogate' sensor is an Infrared Emitter and Detector Lined up on the sides of the barrel, right after the main coil. Once the projectile has made it through most of the coil, it blocks the Infrared Light from being detected, thus cutting the circut. Once this has happened, the projectile maintains its forward velocity without it being impeded by the magnetic field drawing it back in. Now the projectile is free to continue out of the barrel or into another coil/ IR sensor in a two-stage setup...

Unread postPosted: Tue Sep 06, 2005 6:14 pm
Author: CaptPIKel
Have the projectile be a switch. It would then double as a railgun. Just make sure the projectile switches the coils pretty far back.

Unread postPosted: Sat Apr 15, 2006 2:39 am
Author: feral_patriot
Darkerweb12 : '... maintains its forward velocity without it being impeded by the magnetic field drawing it back in ...' .
I know that there has been some fantastic advances in various fields of bio-engineering,but when did they make potato's magnetic? :shock: :P :twisted: :wink:

Unread postPosted: Sat Apr 15, 2006 9:44 am
Author: Shrimphead
Looking back, nobody mentioned it being a potato. Maybe we should make it clear what kind of ammo he is thinking of using.