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> Some Rail Gun Issues, I need some info
Zengou
post Sep 29 2003, 01:11 PM
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Alright my GM just got Rigger 3 and we were having a ball with all the fun junk in there. Espcially when we found the Rail Guns. But we noticed that there was only info on Medium and Heavy Rail guns. So we were left wondering what the stats on a light rail gun would be. Could any body help us out with this?
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GunnerJ
post Sep 29 2003, 02:05 PM
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What'cha talkin' about? There's light railguns. The Aztechnology Xicohtencatl is a Light Railgun with a damage code of 6 LN. It's on page 91 of Rigger3.
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Ed_209a
post Sep 29 2003, 03:37 PM
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Light is a relative term for anything with a naval damage code. :)

I prefer "Not quite so overwhelmingly massive".
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Tzeentch
post Sep 30 2003, 12:57 AM
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I'm always amazed how many people like those things ;)
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MotorPsyko
post Sep 30 2003, 12:39 PM
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Mmmm... Eraser...
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Abstruse
post Sep 30 2003, 01:05 PM
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mmmmm Quake 2...

The Abstruse One
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Kagetenshi
post Sep 30 2003, 01:32 PM
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Mmm railguns...

~J
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Fygg Nuuton
post Sep 30 2003, 05:13 PM
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mmm pie...
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Kagetenshi
post Sep 30 2003, 05:33 PM
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Is the pie also evil?

Railpie!

~J
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Fygg Nuuton
post Sep 30 2003, 05:38 PM
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evilrailpie! > anything
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Birdy
post Sep 30 2003, 05:58 PM
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In a hurry (having a date with DORA on the Crimean)

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Jonah
post Oct 28 2003, 12:17 PM
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rail guns = rock'n
eraser = not a rail gun (an aluminum round?? anyone tried picking up an aluminium slug with a magnet lately??)

Beware the munchkin with the Man Portable Rail Gun

**welch**

if you look in CP or Aliens sources it has to be shoulder mounted MINIMUM and even then it is nasty (and FORGET naval damage buddy :)
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Stonecougar
post Oct 28 2003, 12:27 PM
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Ah, rail guns. The only time a 'runner PC should ever see one is in a magazine or on trid.

Which is not to say my rigger hasn't tried.
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Cray74
post Oct 28 2003, 12:35 PM
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QUOTE (Jonah)
rail guns = rock'n
eraser = not a rail gun (an aluminum round?? anyone tried picking up an aluminium slug with a magnet lately??)

Actually, Jonah, railguns frequently use aluminum projectiles in real life.

There are many different ways to magnetically accelerate projectiles.

Coil guns use a series of electromagnetic "donuts" around the barrel to successively yank a projectile down the barrel. The projectile has to be responsive to magnetic fields - the easiest way to do this is to make it out of iron or some other ferromagnetic alloy. Aluminum won't work, as you noted.

I'd like to make a point about coil guns, though: their electromagnetic coils are probably not made of a magnetic material. They probably use aluminum or copper windings, neither metal being magnetic. They're turned into magnets by running electricity through them. (Basic fact of electromagnetism: where electric current flows, there is a magnetic field.) Did you ever do that in science class or at home? Take some copper wire, wind it around a pencil, and apply a 9-volt battery, then lift a nail or some other piece of iron?

This brings us to rail guns. Railguns don't give a wet fart about how the projectile material responds to electric fields. The important part is that the projectile is CONDUCTIVE. See, railguns actually generate a magnetic field in their projectile by running an electric current through it. The current from capacitors is run up one rail, across the projectile, and down the other rail to complete the circuit. Because the projectile's electrical current is at right angles to the electrical currents in the rails, it's repelled by the magnetic fields in both rails. Aluminum makes a great material for the railgun prototypes because it's very electrically conductive and easy to shape.

(Note: aluminum is a good material for railgun prototypes, but it sucks for actual weapon applications. It has abysmal properties for a penetrator.)

Here's some links to real life rail guns that use aluminum projectiles. There seems to be a whole rail gun hobby culture out there:

Copper, Aluminum, and Graphite Projectiles

Aluminum Projectiles and Railgun Theory

Blog of Railgun Construction, with Aluminum Projectiles (Called "Armatures." Also some railgun theory.)

University Class Discussion of Railguns, with Aluminum and Graphite Projectiles

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Lilt
post Oct 28 2003, 12:53 PM
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Hey: give your munchkins man-portable railguns with the same stats as the laser weapons in CC, except that they're not as quiet, they need to be loaded with slugs (good luck getting hold of good quality ones on the streets) and they suffer recoil penalties as normal (maybe extra?) but can't take most RC mods. They are also resisted with ballistic armor rather than 1/2 impact.

I'd rather the munchkin got their hands on one of them than the laser weapon it's based on.
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Cray74
post Oct 28 2003, 01:17 PM
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QUOTE (Lilt)
Hey: give your munchkins man-portable railguns with the same stats as the laser weapons in CC, except that they're not as quiet, they need to be loaded with slugs (good luck getting hold of good quality ones on the streets) and they suffer recoil penalties as normal (maybe extra?) but can't take most RC mods. They are also resisted with ballistic armor rather than 1/2 impact.

That's an excellent suggestion. I like the idea. The players get their rail guns and the GM only has to deal with a slightly weakened version of an existing weapon.
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Lilt
post Oct 28 2003, 01:43 PM
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Actually I think there'd be positive aspects too (after re-reading the laser weapon rules).

There would be no reduction in power based on range (normally -2 per range category above short) or smoke/fog (-1 per 2 meters). Chuck a bit more recoil at them and it'll be fine.
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Shockwave_IIc
post Oct 28 2003, 05:02 PM
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How about (for the munkins out there) you get yourself a large anthomorthic(sp?) drone beef it up, and put on it a light railgun on each shoulder.

You could call it dunno XV88 battledrone or something.:-D
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ialdabaoth
post Oct 28 2003, 05:50 PM
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And promptly knock yourself flat on your ass when you try to fire it.
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Req
post Oct 28 2003, 05:57 PM
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...and load it with WOOD for huntin' vampires!

Three cheers for Rifts, the brokenest game around.
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Wonazer
post Oct 28 2003, 06:14 PM
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QUOTE (Req)
...and load it with WOOD for huntin' vampires!

Three cheers for Rifts, the brokenest game around.

Rifts?
/shudders
Palladium Game's products in general!!
i.e. Robotech, TMNT, Ninjas and Superspies, Heroes Unlimited, etc...
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El_Machinae
post Oct 28 2003, 07:33 PM
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Rifts? Railguns? Vampires? Hmmmn, gives me an idea :D

There's another game out there called "Alternity" (which I'm currently playing) and they have weapon that uses rail technology to fire a rocket out the chamber, and THEN the rocket ignites. It's kinda like a rail-boltgun. Or a rail gyrojet if you will.

In a game I'll be running, there's a robot built that looks like a Mac II - with the four cannons on top. Except, those cannons are actually magnetic-field generating devices. A round is popped up into the middle of the rails and they're turned on. Can you imagine the energy a vehicle the size of a Mac II could generate?

Sadly, I still can't get something up to relativistic speed. Ares would have a bonanza if they could "field test" their weapon by making craters on the moon! :eek:
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Kagetenshi
post Oct 28 2003, 07:59 PM
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"What are we going to do, throw rocks at them?"
"Exactly."

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Siege
post Oct 28 2003, 08:01 PM
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Isn't that how most people describe orbital bombardments?

-Siege
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Kagetenshi
post Oct 28 2003, 08:03 PM
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Ever read The Moon is a Harsh Mistress?

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