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*real pics*Gauss (electromagnetic) pb gun

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WGP guy2 View Drop Down
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I play the Bag Pipes

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Post Options Post Options   Thanks (0) Thanks(0)   Quote WGP guy2 Quote  Post ReplyReply Direct Link To This Post Posted: 13 March 2007 at 10:01pm
Originally posted by nathanours nathanours wrote:

how heavy is it? or how heavy will it be in gun form?



Right now its about a pound with everything.  I expect with balls, a body, frame, and anything else I add it will be 2-3 pounds.

Also just to make a note I made a 3D model of it today.  I modified it with a few suggestions here and figure out a way to return the bolt without the charging coil.

I think someone asked how velocity will be regulated.  Keep in mind that it isn't affected by weather (especially if metal isn't used for the bolt), so once its set its set.  But I could potentially use switches to turn off sets of capacitors for large changes, and then a potentiometer for small changes.

To answer Frog man's question about how long the capcitors take to fully discharge, I calculated that the bolt, traveling at 300fps (to move the ball that fast) will take 555.556 micro seconds for the bolt to travel its full distance.  That also means that, not taking into account capacitor charge time, and assuming that the cocking time will be the same as the shooting time, the gun could theoretically cycle 899.999 times per second.  This, however, is no where near plausible.  The fastest fire rate ever was 16666 rounds per second (Metal Storm).


Edited by WGP guy2 - 13 March 2007 at 10:10pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tallen702 Quote  Post ReplyReply Direct Link To This Post Posted: 13 March 2007 at 10:11pm
I'd suggest going with a spring set in the receiver for the return stroke of the bolt. It doesn't need to be super stiff to give you a fast return rate at the moment due to the capacitor's charging time. The Mini, Badger, and Automag all use that system and it works well for them. Also, I'd definitely suggest getting a hold of an old AGD "foamy" for the front of the bolt to keep the ball breakage to a minimum. Also, have you thought about either using a ferro-magnetic or rare-earth magnetic core inside a delrin bolt? It would give you the same properties to accelerate the bolt down the barrel using your coil without the drag, lubrication, and recoil issues that you might experience with an all metal or all magnetic bolt. Also, I'd suggest going with an old Angel LCD NiMH rechargeable battery for your power source as you can recharge it and get a decent amount of shots out of it before needing to re-charge. It's long, thin, tubular design would also allow you to mount it below the receiver saving you some room up front where you'd normally put the 9v batteries.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Monk Quote  Post ReplyReply Direct Link To This Post Posted: 13 March 2007 at 10:47pm
Wow, I cant believe there was an argument over voltage and amperage lasting a whole page.

But to add my two cents. Enough voltage for long enough over the right part of the body will kill. No matter what the amperage. Instead of stopping the muscle, it will fry the crap out of it.

And I wouldnt bother arguing that. Because I got a 98% in my college electricity class.

Also. If you had some potentiometers or variable resisters, you can change how much voltage/amperage is going to the wires causing a slower/higher fps.

Dont worry about the patents and stuff. To be honest this is a highschool science project. So anyone can do it. But it is a very interesting idea. Im anxious to see how it all turns out.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote FROG MAN Quote  Post ReplyReply Direct Link To This Post Posted: 14 March 2007 at 12:35am
a variable resisitor (or potentionmeter sp) in series with the coil should be able to adjust velocity
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Post Options Post Options   Thanks (0) Thanks(0)   Quote FROG MAN Quote  Post ReplyReply Direct Link To This Post Posted: 14 March 2007 at 12:37am
Originally posted by Monk Monk wrote:


And I wouldnt bother arguing that. Because I got a 98% in my college electricity class.


i can see thats a very cereal class, lol


"what do you got next bob?"
"Electricity"
"Dam thats a hard one"
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Monk View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Monk Quote  Post ReplyReply Direct Link To This Post Posted: 14 March 2007 at 12:42am
Originally posted by FROG MAN FROG MAN wrote:

Originally posted by Monk Monk wrote:


And I wouldnt bother arguing that. Because I got a 98% in my college electricity class.


i can see thats a very cereal class, lol


"what do you got next bob?"
"Electricity"
"Dam thats a hard one"


Its actually a very difficult class. The only reason I didnt go into Electricity 2 was because I decided to go into Nuke med instead of Nuke power.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote FROG MAN Quote  Post ReplyReply Direct Link To This Post Posted: 14 March 2007 at 12:48am
i still cant belive there a class called electricity, its funny
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tallen702 Quote  Post ReplyReply Direct Link To This Post Posted: 14 March 2007 at 1:32am
Great, monk's going into nuke med? Goiaina part deux anyone?

All joking aside, are they still using Caesium (Cesium) 137 for the gamma source in radiation therapy these days Monk? The history of Nuclear medicine is scary at best. If you research the lost artifact from the Piscataway incident, most of the early nuke med practiced was just guess-work. A bit of "lets just shove some radium up your nose for a minute..... and that should do it... I think..." or, if you look even earlier to the old days of "Drink Radium water! It'll make you strong and keep your bones healthy!" The sheer amount of quackery in nuclear medicine's history is astounding.

Sorry for the derailment, but it's a subject that's interested me for years.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Monk Quote  Post ReplyReply Direct Link To This Post Posted: 14 March 2007 at 1:34am
The actual name is Into to Electricity and Theory.

So stop being a pompus prick. --- frogman

Well to be quite honest, most of the nuke med is still guesses. They still use cesium, but they are working mostly with iodines and flat out radiation. They are now using radioactive pellets that can be injected straight into the cancer spot. Which greatly reduces the "colateral damage" if you will.

lol, but as far a radon/radium is concerned, yeah, they learned their lesson.

So back to the topic, I want vids.


Edited by Monk - 14 March 2007 at 1:38am
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mamasboi Quote  Post ReplyReply Direct Link To This Post Posted: 15 March 2007 at 2:07am
i wanna see a working gun model it seem like a great idea
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