[Pyramid 3/33] Reverse-Engineer Basic Set Weapons

[DouglasCole]

Originally Posted by Icelander

The ones in Low-Tech ought to be multipliers on Basic Lift, not some bizarre ST multipliers.

They follow a regular progression in BL. I took the implied BL progression and made the formulas in the article. The numbers may not be right at high multuples, but thats due to non
Linearity or something.

[Bruno]

Originally Posted by vicky_molokh

GURPS doesn't normally interact with BL directly that way.

Actually, it does - any time people co-operate or otherwise pool BL for any purpose for which BL is used, it's all done at the BL level. Two ST 10 guys != a ST 20 guy, and the rules reflect this.

[vicky_molokh]

Originally Posted by Bruno

Actually, it does - any time people co-operate or otherwise pool BL for any purpose for which BL is used, it's all done at the BL level. Two ST 10 guys != a ST 20 guy, and the rules reflect this.

Simple addition. Not the amount of operations that is required to figure how a cranequin affects the interaction of the user's ST and the crossbow's MinST.

[Gigermann]

First attempt:
TL3 Medieval Light Crossbow
Draw Weight: 300lbs
Min ST: 14 (drawn by ST10 w/ one-foot stirrup and belt-claw)
Draw Length: 11in
Damage: 1d(2) realistic/1d+2(2) cinematic
Acc: 3
Max Range: 424yds
Weight: 3.7/.08
Cost: $150/$11.25

The prod is a 36", recurved, round, yew self-bow; inspired by the aforementioned linked document. I artificially bumped up the cost to match the BS crossbow; otherwise, it's about $64.

Anybody see anything I've missed?

[Kuroshima]

IMHo, the increasing loading time multipliers already include part of the non-linear relationship of basic lift and ST:

ST   loading time  Loading time multiplier ST multiplier squared and doubled
x1           2
x1.5         9              x4.5                       4.5
x2          16              x8                         8
2.5         25             x12.5                      12.5
x3          36             x18                        18

Now, cube the ST multiplier, and then double it. Surprise! It's exactly the value provided in low tech.

[DouglasCole]

Originally Posted by Kuroshima

IMHo, the increasing loading time multipliers already include part of the non-linear relationship of basic lift and ST:

ST   loading time  Loading time multiplier ST multiplier squared and doubled
x1           2
x1.5         9              x4.5                       4.5
x2          16              x8                         8
2.5         25             x12.5                      12.5
x3          36             x18                        18

Now, cube the ST multiplier, and then double it. Surprise! It's exactly the value provided in low tech.

This is the math I did for TDS. Falls right out of the analysis, and you can see where I got the M factor.

[Gigermann]

I'm still having some issues building crossbows, mostly centered around the "shorter, stubbier" composite crossbows. I finally found a couple of good examples that actually had some friggin' dimensions (apparently, not easy to find), here and here. I'm presuming a horn/sinew composite—looks right, at least. I've had to extrapolate what the thickness of the prod is—looks like a D-shape; my calculations have them around 1.7in-2in. Also, I'm guessing at the draw-length; around 10in or so. I have no idea what the draw-weight is in these examples, except to say that they're believed to be hunting pieces, so 3000lbs is probably too much :P

I cannot, for the life of me, get a design that fits these specifications that works at all. I feel like I'm missing something important, here. Someone else want to give it a go, and show me what I'm doing wrong?