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 Posted - October 24 2012 : 12:49:11 PM
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When measuring the radius of an HO curve, is the measurement from the center of the circle to the inner rail, the outer rail, or in between the two rails?
I honestly don't know...hoping someone here does 
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 Posted - October 24 2012 : 1:14:11 PM
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check this out cheez ken
A radius in geometry is the distance from the center of a circle to any point on the circle. Smaller circles have shorter radii (the plural of radius is radii).
http://www.steamlocomotive.com/model/curve.shtml
Edited by - catfordken on October 24 2012 1:17:09 PM
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Posted - October 24 2012 : 1:48:56 PM
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quote:
A radius in geometry is the distance from the center of a circle to any point on the circle. Smaller circles have shorter radii (the plural of radius is radii). |
When they say "any point in the circle" they're referring to the outer edge. On a circle of track, is the outer edge one of the rails, or is it the center of the ties? 
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Posted - October 24 2012 : 1:53:45 PM
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In between the two rails, in the center of the ties.
Glenn
Glenn
I was thinking of the immortal words of Socrates, who said, "... I drank what?"
Edited by - gmoney on October 24 2012 1:55:54 PM
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Posted - October 24 2012 : 2:32:16 PM
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In between the two rails...
Mike
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Posted - October 24 2012 : 4:22:59 PM
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| Thanks guys!
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Posted - October 24 2012 : 8:19:11 PM
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Posted - October 25 2012 : 02:03:06 AM
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18" radius track, put end to end, will require 36"... essentially three foot round.
A 4' X 4' piece of plywood would well suit a circle of track, with at least 2" between the track and edge of the board.
Standard freight car wheels are 36"...
22" radius requires a 44"...
A 4' X 8' board would allow at least two whole loops of track...
1 outside track of 22" radius curves
1 inside track of 18" radius curves...
A third loop of sharp/flexible track, for short loco's and/or rolling stock, is also possible.
More than you asked for, but possible ideas for you to grasp as well.
John
I don't have a one track mind. It depends on the turn-out.
"I love your catenary!"
Is that a power-trip or just another pick-up line?
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