- #1
DesmondD
- 14
- 0
I have been doing various experiments with my photography and recently built a coil gun.
I simply pulled apart a starter-motor solenoid and wrapped the windings around an 8mm tube and fire a short piece of a bolt out of it using a charged 3300uf capacitor and an SCR.
None of this is calculated but it works pretty well.
I have a video shot at 400fps showing how it shoots something I want to photograph.
I use the pre-flash of the camera to trigger the shot and a fraction of a second later I capture the image.
So my real question is how I can make it as efficient and powerful as possible with what I have, besides perhaps making a better winding.
The capacitor is rated at 400 volts and 3300uf though the old flash I am using to charge it only takes it up to 325 volts at full charge.
The electrical burst mustn't last too long or it will pull the projectile back again.
I am using an 800 volt 300 amp SCR to trigger it using an optic sensor used for triggering flash.
I was thinking that perhaps I could make the coil much longer to give a longer pull stroke on the projectile but am unsure of the maths of this like number of windings, thickness of wire etc.
Any help would be appreciated :)
I simply pulled apart a starter-motor solenoid and wrapped the windings around an 8mm tube and fire a short piece of a bolt out of it using a charged 3300uf capacitor and an SCR.
None of this is calculated but it works pretty well.
I have a video shot at 400fps showing how it shoots something I want to photograph.
I use the pre-flash of the camera to trigger the shot and a fraction of a second later I capture the image.
So my real question is how I can make it as efficient and powerful as possible with what I have, besides perhaps making a better winding.
The capacitor is rated at 400 volts and 3300uf though the old flash I am using to charge it only takes it up to 325 volts at full charge.
The electrical burst mustn't last too long or it will pull the projectile back again.
I am using an 800 volt 300 amp SCR to trigger it using an optic sensor used for triggering flash.
I was thinking that perhaps I could make the coil much longer to give a longer pull stroke on the projectile but am unsure of the maths of this like number of windings, thickness of wire etc.
Any help would be appreciated :)