11-29-2017, 05:40 PM | #1 |
Join Date: Nov 2017
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Casey Joneskii
In the Casey Joneskii scenario, how fast can the train be travelling when it reaches the end point? Does it need to slow down to a certain speed?
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11-29-2017, 06:22 PM | #2 | |
Ogre Line Editor
Join Date: Sep 2006
Location: Plainfield, IL
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Re: Casey Joneskii
Quote:
I assume 9.02.4 Running off the rails would apply here, since that's exactly what it would do if it came in too fast.
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11-29-2017, 06:31 PM | #3 |
Join Date: Oct 2014
Location: St. Louis, Missouri
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Re: Casey Joneskii
While I can see that, realistically it's a short train, and could stop from full speed within a few hundred yards.
It's one to consider for the rules though. |
11-29-2017, 06:44 PM | #4 | |
Ogre Line Editor
Join Date: Sep 2006
Location: Plainfield, IL
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Re: Casey Joneskii
Quote:
6/7 -> 4/5 -> 2/3 -> 0/1 So if it's at full speed, the minimum distance it would have to start decelerating (hard) is 7+4+2 = 13 hexes, which is just the west side of the bridge at S1-0906
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11-29-2017, 08:05 PM | #5 |
Join Date: Oct 2014
Location: St. Louis, Missouri
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Re: Casey Joneskii
19,500 meters to stop*? Man, that's a stretch. I think that's one area where gameplay trumps reality.
One hex = 1500 meters, so 13 hexes is 19,500 meters; or 12 MILES to stop the train per the rules de-acceleration. Seven hexes per turn is 6 miles per turn (four minutes per turn, right?, so that's roughly 100 mph). Realistically, a present day BNSF freight a mile long, moving at 50 mph, can stop in emergency in about a mile. |
11-29-2017, 08:33 PM | #6 | |
Ogre Line Editor
Join Date: Sep 2006
Location: Plainfield, IL
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Re: Casey Joneskii
Quote:
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11-30-2017, 08:22 AM | #7 |
Join Date: Oct 2014
Location: St. Louis, Missouri
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Re: Casey Joneskii
This one kept me awake in bed quite a bit of the night. I did some Googling, and found these:
"A Japanese railway company on Friday unveiled a new Shinkansen bullet train featuring an improved brake system that can reduce the stopping distance to 300-400 meters while speeding at 270 kilometers per hour." (February 2013) "A full service application will stop a loaded (unit) coal train going 50 mph on flat ground in about 1.5 miles; an emergency application will stop it in about half of that distance." "A suburban train can stop (under ideal conditions) from 70 mph in about 1/2 mile." Regarding the French TGV trains: "Maximum emergency stopping distance from 300 km/h (186 mph) is 3500m (about 2 miles), and each passenger car axle is equipped with four brake discs - with wheel slide protection." And lastly, a little visual explanation, with 1993 tech: https://www.youtube.com/watch?v=BxFBkyAABRI |
11-30-2017, 08:59 AM | #8 |
Join Date: Oct 2014
Location: St. Louis, Missouri
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Re: Casey Joneskii
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11-30-2017, 09:47 AM | #9 |
Wielder of Smart Pants
Join Date: Aug 2004
Location: Ventura CA
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Re: Casey Joneskii
Maybe it isn't taking the whole turn to stop or the entire hex.
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11-30-2017, 10:00 AM | #10 |
Join Date: Jun 2008
Location: Cheltenham, PA
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Re: Casey Joneskii
As a general rule, trains can slow down much faster than they can speed up. Perhaps we need to adjust the rules and allow trains to slow down by 2 steps rather than just 1? It still requires 2 hexes to stop (6/7 -> 2/3, move 2, then 2/3 -> 0/1 and stopped), but that's much more realistic.
OTOH, forcing you to slow down earlier and take 6 hexes to stop adds to the strategy and tension, but not having actually played a train scenario other than the new nightfall one, I'm not sure how much that really adds...
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Joshua Megerman, SJGames MIB #5273 - Ogre AI Testing Division |
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