09-10-2021, 08:38 AM | #31 |
Join Date: Nov 2004
Location: Niagara, Canada
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Re: Guns! Guns! Guns! and GURPS
Flipping through 3G3, I'm trying to figure out how its approach to energy-weapon stunners works, and how it translates to GURPS.
For instance, if you go for a carrier-laser with minimal DV, even down to 1, does that place any limits on how many Joules of zappage you can fire down the beam-path? (As long as your battery or capacitor can dump that much energy at once, of course.) And how do 3G3's "stun damage" numbers translate into GURPS terms? I can find mentions in 3G3 that a stunner pushing out 100 J does DV 9 damage, 1000 J does DV 27, and all the way up to 40,000 J doing DV 124. But in GURPS' own Ultra-Tech, electrolasers' damage are described in terms of a penalty to an HT roll, and optionally a kill setting which causes a heart-attack if the HT roll is failed by 5. To try checking some of the numbers, I'm trying to throw together a 3G3 ultratech wristwatch stunner; I'm guessing TL19, a laser DV of 1 needing 6.8 J, a "fixed mount" instead of a pistol grip, and with the mass x0.5 and stunner options; that seems to end up with a mass of 43.46 x 1.1 x 0.5 x 1.1 = 26.29 grams (0.058 lbs) (plus batteries, at 60% efficiency), cost 660.73 Cr, emitter length 2.7 cm, and 3G3 weapon stats of Range Class 1/1, Inherent Accuracy 1, RoF 10/s, Bulk VS/1, AV 2, 1BP. But I could easily have gotten any or all of that wrong. Anyone care to point out any errors I've made? :)
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Thank you for your time, -- DataPacRat "Then again, maybe I'm wrong." |
09-10-2021, 09:52 AM | #32 | |
Join Date: Jun 2020
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Re: Guns! Guns! Guns! and GURPS
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09-10-2021, 10:13 AM | #33 | |
Join Date: Nov 2004
Location: Niagara, Canada
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Re: Guns! Guns! Guns! and GURPS
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But temporarily sticking to 3e, over on 3G3 page 83, the formula is: Average GURPS points of damage = 0.26 * (DV^1.12). So a DV of 9 is an average of 3.0 damage (or 0.87 d6), DV 27 is average 10.4 damage (2.98 d6), and DV 124 is average 57.5 damage (16.43 d6). ... Now what?
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Thank you for your time, -- DataPacRat "Then again, maybe I'm wrong." |
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09-10-2021, 10:19 AM | #34 | |
Join Date: Jun 2020
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Re: Guns! Guns! Guns! and GURPS
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09-10-2021, 12:38 PM | #35 |
Join Date: Aug 2007
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Re: Guns! Guns! Guns! and GURPS
That's what you did with 3e electrolasers anyway.
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Fred Brackin |
09-10-2021, 02:21 PM | #36 |
Join Date: Nov 2004
Location: Niagara, Canada
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Re: Guns! Guns! Guns! and GURPS
Finally dug up my 3e UltraTech, to see how it treats electrolasers. When set to non-lethal, instead of taking normal damage, take the damage that makes it through DR, halve it, and make a HT roll minus that halved number. For lethal setting, the damage past DR actually does normal damage; and after than, make a HT roll minus half the damage to check for a heart attack.
With that info, I'm pretty sure that I can work from a 3G3 electrolaser design and use it in GURPS. (I should still look up conversions from 3e to 4e GURPS damage for the lethal electrolaser, but I'm sure I have a copy of GURPS Update somewhere around here.) I think the one point I'm still confuzzled on is a basic bit of 3G3 electrolaser design - once you've built yourself a carrier beam of whatever size, then what limits, if any, are there on how much zappage can be sent down that carrier beam to fry the unfortunate target? If a wristwatch-sized 3G3 electrolaser has a capacitor big enough to drop 40 kiloJoules all at once, could the watch-zapper actually send all those electrons to where they're supposed to go?
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Thank you for your time, -- DataPacRat "Then again, maybe I'm wrong." |
09-10-2021, 03:34 PM | #37 | |
Join Date: Feb 2005
Location: Berkeley, CA
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Re: Guns! Guns! Guns! and GURPS
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09-10-2021, 03:44 PM | #38 | ||
Join Date: Nov 2004
Location: Niagara, Canada
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Re: Guns! Guns! Guns! and GURPS
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Thank you for your time, -- DataPacRat "Then again, maybe I'm wrong." |
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09-10-2021, 03:47 PM | #39 |
Join Date: Feb 2005
Location: Berkeley, CA
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Re: Guns! Guns! Guns! and GURPS
Realistically, trying to use an electrolaser at above its designed power will probably just fail, but I don't know what the G3G electrolaser design sequence looks like.
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09-10-2021, 03:56 PM | #40 | |
Join Date: Nov 2004
Location: Niagara, Canada
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Re: Guns! Guns! Guns! and GURPS
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So, apparently, you design a laser with a Damage Value as low as 1 (which would be around 6.8 Joules output (and 60% or less efficiency input); a DV 10 laser is around 68 J output), and add 10% to mass and cost; and if you want, can then set a dial for how much charge to send down the carrier beam, with an example implying 2,500 J of electrons is appropriate.
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Thank you for your time, -- DataPacRat "Then again, maybe I'm wrong." |
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guns, spreadsheet, weapon design |
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