12-17-2010, 09:22 PM
I just did a little calculation. For simplicity, I assume 50" of track and that the middle bit rises 1".
So it looks like 2 right angle triangles, sides 25" and 1" and a hypotenuse of (using my old drinking buddy Pythagoras's theorem) 25.02". OK, Now, there may be a little variance because everything will really be curved, but that's a mighty small piece expansion. (looks like 0.08%)
I had it happen on my layout. I have a bridge over the fireplace and the electric heater in there was cranked up and my track rose up because it wasn't held down.
Digression: This is an old school problem. The emperor decreed that a belt was to be placed around the earth at the equator. The equator is exactly 25000 miles around (to make the math easier) and round. The team assigned this duty slipped up and made the belt one mile too long but they said "We'll just spread out difference evenly and no one will notice."
So did anyone notice? How much of a gap was there?
So it looks like 2 right angle triangles, sides 25" and 1" and a hypotenuse of (using my old drinking buddy Pythagoras's theorem) 25.02". OK, Now, there may be a little variance because everything will really be curved, but that's a mighty small piece expansion. (looks like 0.08%)
I had it happen on my layout. I have a bridge over the fireplace and the electric heater in there was cranked up and my track rose up because it wasn't held down.
Digression: This is an old school problem. The emperor decreed that a belt was to be placed around the earth at the equator. The equator is exactly 25000 miles around (to make the math easier) and round. The team assigned this duty slipped up and made the belt one mile too long but they said "We'll just spread out difference evenly and no one will notice."
So did anyone notice? How much of a gap was there?
David
Moderato ma non troppo
Perth & Exeter Railway Company
Esquesing & Chinguacousy Radial Railway
In model railroading, there are between six and two hundred ways of performing a given task.
Most modellers can get two of them to work.
Moderato ma non troppo
Perth & Exeter Railway Company
Esquesing & Chinguacousy Radial Railway
In model railroading, there are between six and two hundred ways of performing a given task.
Most modellers can get two of them to work.