I've been following the trains you've posted and one thing stands out to
me; they're awfully slow compared to real examples. The Union Pacific
Big Boy 4-8-8-4, was more than three times as fast and had about 2/3ds
the kW.
On 9/7/2015 2:31 AM, Onno Meyer wrote:
This is a weekly posting with GURPS vehicles (and the like) to the
GURPSnet mailing list. I grant the permission for all non-commercial
redistribution of my work, but I would like to know if you put it on
a website or the like. The files at omeyer.gmxhome.de are down until
I fix the automatic PDF generation, which should be one of these
days - see sourceforge.net/projects/gurpsml
Onno Meyer, 2015-09-07
GSbAG Mountain-class Freight Train v1.0 (GURPS Traveller TL6)
Copyright 2015 by Onno Meyer
GSbAG uses steam railways on some underdeveloped planets. They can be
maintained using local ressources, a cost-saving measure which can make
the business case for a new mine viable where imported grav technology
would run at a loss. The Mountain-class often tows long freight trains
at low speed.
Freight Engine
The Mountain-class is an articulated 2-8-8-4 steam locomotive with an
attached coal and water tender. The two leading wheels and eight of the
driving wheels are mounted on a bogie, eight of the driving wheels and
four trailing wheels are mounted directly on the frame. The condensing
tender has eight more wheels. The combination is almost 80m long.
The usual crew are two engineers and three stokers. A backup crew can
ride in a small bunkroom at the rear of the tender -- after a few years,
they might even learn to sleep through the noise and vibration.
With one hundred 20-dton hydrogen cars, the Mountain-class has 25 mph
top speed and 15 mph sustainable speed. The dual steam engines burn 9.6
tons of coal per hour of routine use. A full load of 96 tons is $3,840.
Subassemblies: Body +8, thirty Railway Wheels +4, full-rotation Open
Mount +1.
Powertrain: 6,400-kW wheeled drivetrain; two 3,200-kW forced draft steam
engines; two 3,600-kWs lead-acid batteries.
Fuel: 3,840 cf coal bunker.
Occ: 1 RCS, 4 RSR, 5 bunks. Cargo: 300 cf.
Armor F RL B T U
Body: 3/12 3/12 3/12 3/12 3/12
Wheels: 3/12 3/12 3/12 3/12 3/12
Equipment:
Body: Whistle; medium-range radio; three intercom stations; 3-mile
searchlight; 10-man environmental controls. Open Mount: 0.5-ton crane.
External: Plow; 2,667 sf top deck; two tow hitches.
Statistics
Size: 260'x11'x20' Payload: 200,000 lbs. Lwt.: 1,000,000 lbs.
Volume: 50,000 cf Maint.: 5 man-hours Price: $995,940
HT: 12. HPs: 48,000 Body, 1,200 each Wheel, 100 Open Mount.
gSpeed: 25 gAccel: 0.6 gDecel: 10 gMR: 0.125 gSR: 6
Ground Pressure Extremely High. No Off-Road Speed.
Design Notes
Performance was calculated with 12,000 tons of towed weight,
representing the rest of a typical Freight Train configuration. Body is
39,982 cf, articulated. Wheels are 10,000 cf (increased volume). Open
Mount is 18 cf. Structure is standard, extra-heavy. Armor is standard
metal. Mechanical controls. 974.97 cf of empty space. Empty weight is
800,000 lbs.
20-dton Hydrogen Tanker Car
This railcar carries 20 displacement ton of hydrogen, enough to refuel
one Free Trader or Scout/Courier. Two are required for a Far Trader.
Subassemblies: Body +7, eight Railway Wheels +4.
Armor F RL B T U
Body: 3/5 3/5 3/5 3/5 3/5
Wheels: 3/10 3/10 3/10 3/10 3/10
Equipment:
Body: 69,000 gallon hydrogen tank (fire on 14). External: Two tow
hitches.
Statistics
Size: 110'x11'x15' Payload: 40,020 lbs. Lwt.: 239,820 lbs.
Volume: 12,800 cf Maint.: 45 hours Price: $200,700
HT: 12. HPs: 9,000 Body, 900 each Wheel.
gSpeed: * gAccel: * gDecel: * gMR: * gSR: *
Ground Pressure Very High. No Off-Road Speed.
* Use towing vehicle's statistics after adding towed weight.
Design Notes
Body is 10,376.25 cf. Wheels are 2,423.75 cf (increased volume).
Structure is cheap, heavy. Armor is cheap metal. Empty weight is 199,800
lbs.
Both vehicles uses the design rules from Vehicles [second edition,
third printing, July 2010 errata], VXi, and VXii (including the armor
volume rule) with the text format from Vehicles Lite. The Traveller
rules affect the background and design choices, but not the technology
of this vehicle.
Next Week: A local passenger train.
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“Before today, I was scared to live, after today, I'm scared I'm not
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