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I was just cleaning up some paperwork before I start throwing things out (or selling them in a flee market) and came across something I thought I'd share.
Here's a quote from one of my timetables:
"Miles for track one between milepost 71 and 80 are 1.25 miles long"
The miles for track two are one mile long, Do you know why this would be?
Some may figure it out right away.
The tracks are different radii. The outside track is going to be longer then the inside.
The tracks are different radii. The outside track is going to be longer then the inside.
Oh you're close, however both tracks snake left and right for the nine miles.
Track one was relocated for grade reduction and had about 2 miles added. The tracks aren't parallel.
KJD hit it bang on.
It's called Notch Hill on the CPR shuswap Subdivision in British Columbia and can be seen from the Trans Canada Highway.
Track two is used for West bound trains going down grade and track one is used for the East bounds. It curves, loops, and fly's over the other in close proximity which adds the 2.25 extra miles of track.
If they didn't "stretch" the miles on track one they wouldn't match up when the two join again.
Pretty freaky when you're tired late at night and the train you're following is beside you going the other way!
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