10-12-2012, 02:48 PM | #11 | |
Join Date: Sep 2004
Location: Canada
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Re: Pyramid #3/33 Bow Worksheet: Still working?
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Experimenting with it, with the numbers I have it's just as bendy, but it's much more structurally sound - so it takes much less material to produce similar amounts of energy storage... which means there's less energy lost to accelerating the arms and more energy available for dumping into the projectile, AND you have a lighter bow. You can get it down to about half the weight of the original and you get a performance increase. There are definite benifits to the two PSI numbers being bigger, as long as the relationship between them stays "good". --- I am having a DEVIL of a time finding numbers for leather or rawhide - I'd like to do cattle, goat, and kangaroo (order of worst to best) but all the measurements I can find are based on N/mm - which is in the wrong dimension. Everyone's interested in treating leather on an area basis, not a volume basis :P
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10-13-2012, 12:40 AM | #12 |
Join Date: Mar 2006
Location: Iceland*
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Re: Pyramid #3/33 Bow Worksheet: Still working?
Assuming that I don't usually play around with fancy worksheets, how much manual labour is involved in adding new materials to the list?
That is, would I have to change a bunch of stuff in the bow design and arrow design worksheets to get the new materials to be included and play nice? Now I really want to play around with fantastic materials. ;)
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Za uspiekh nashevo beznadiozhnovo diela! Last edited by Icelander; 10-13-2012 at 01:04 AM. |
10-13-2012, 12:48 AM | #13 |
Join Date: Feb 2005
Location: Berkeley, CA
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Re: Pyramid #3/33 Bow Worksheet: Still working?
Those numbers are weird; the energy storage in a volume of material stretched to its elastic limits scales as (yield strength ^ 2) / (2 * young's modulus), so x3 on both should result in requiring 1/3 as much elastic material (though you'll want to change the shape of your bow).
Last edited by Anthony; 10-13-2012 at 12:53 AM. |
10-14-2012, 04:32 AM | #14 |
Join Date: Mar 2006
Location: Iceland*
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Re: Pyramid #3/33 Bow Worksheet: Still working?
Doug, how much work would it be to make the rounding from the average damage to the damage dice obey normal GURPS rules, i.e. HT p. 166? By that I mean exchanging the 0d+1s and so forths for more standard 1d-4s or similar, as well as incorporating the +1d-1 steps in the progression.
That is, an average damage of 6 would translate into 2d-1. I guess there's no harm in retaining 1d+3 as a step on the progression, even though HT doesn't, but more granularity is always good. Or is it perhaps impractical to have the program do the rounding in any other way than the current one? Looking at the equation you have in place, it would certainly require something much more complex and 'if-theny' to accomplish. Is it just impossible? Or at least so much work it's not worth it and if I want the dice to better reflect the average damage, I ought to enter it mantually?
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10-14-2012, 06:28 AM | #15 | |
Join Date: Dec 2008
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Re: Pyramid #3/33 Bow Worksheet: Still working?
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10-14-2012, 08:06 AM | #16 |
Doctor of GURPS Ballistics
Join Date: Sep 2004
Location: Lakeville, MN
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Re: Pyramid #3/33 Bow Worksheet: Still working?
It wouldn't be that bad, and yes, I'd need a Vlookup, I think. 2d-2, 2d-1 (for example) would blend in with the standard 1d, 1d+1, 1d+2, and if you want, 1d+3
1d: 3.5 1d+1: 4.5 2d-2: 5.0 1d+2: 5.5 2d-1: 6 1d+3: 6.5 2d: 7 You'd almost want a 2d-3 step at 4.0 to keep half-point increments.
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10-14-2012, 02:29 PM | #17 | |
Join Date: Mar 2006
Location: Iceland*
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Re: Pyramid #3/33 Bow Worksheet: Still working?
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But it would be great if the damage dice reflected the average damage. Especially with low draw bows that come out to less than 1d in the current system, because GURPS does not approve of damage dice being listed as 0d+adds.
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10-14-2012, 02:58 PM | #18 | |||
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Re: Pyramid #3/33 Bow Worksheet: Still working?
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Looking forward to it.
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Za uspiekh nashevo beznadiozhnovo diela! Last edited by Icelander; 10-14-2012 at 03:03 PM. |
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10-14-2012, 03:19 PM | #19 | |
Doctor of GURPS Ballistics
Join Date: Sep 2004
Location: Lakeville, MN
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Re: Pyramid #3/33 Bow Worksheet: Still working?
That wasn't really my concern, honestly. If you want to convert using that formula, you can go ahead and do it manually.
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Why don't you hold off, though, with the monstrosity. I think there's got to be a better way, that mimics the HT formula. I even think I know what it might be.
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10-14-2012, 03:23 PM | #20 | |
Join Date: Mar 2006
Location: Iceland*
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Re: Pyramid #3/33 Bow Worksheet: Still working?
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[and to fill up character limit.]
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