December 02, 2004 11:56PM
|
|
|
So in my crude drawing below, if a narrow-gauge train is eastbound then guardrail G1 would push
on the back side of the wheels on the right side of the train which would draw the wheels on the left side over enough to roll onto the frog F1, and guardrail G3 would push on the backs of the left-side wheels to draw the right-side wheels onto frog F3. G2 would act the same way for frog F2 if a narrow-gauge train were westbound. Standard gauge trains would not be affected by any of the guard rails, so - voila' - no moving points!
I keep forgetting that the flangeways in 12"-to-the-foot scale are proportionally a lot narrower than in 1:87 or 1:64, and the wheel treads are wide enough that the outer edges are still riding on the straight rail when the wheels get to the point of the frog, so they would never ride on the flanges. Were there also guard rails as I have shown on the inside of the frog, or not?
p.s. - Pointless swishes must have been inspired not by the mother of invention, Necessity, but by the father. Can you name him?
Subject |
Author |
Posted |
|
Scott Green |
November 30, 2004 09:00AM |
|
Hobosteve |
November 30, 2004 09:15AM |
|
Gavin Hamilton |
November 30, 2004 09:33AM |
|
Jerry Day |
November 30, 2004 10:28AM |
|
Paul Hagglund |
November 30, 2004 10:52AM |
|
William |
November 30, 2004 11:09AM |
|
Jerry Day |
November 30, 2004 02:26PM |
|
Dick Seelye |
November 30, 2004 01:11PM |
|
Douglas vV |
November 30, 2004 01:31PM |
|
Russ Sperry |
November 30, 2004 02:34PM |
|
Jerry Day |
November 30, 2004 04:48PM |
|
Josh McNeal |
November 30, 2004 05:04PM |
|
Douglas vV |
November 30, 2004 05:22PM |
|
Andy Roth |
December 01, 2004 01:04PM |
|
Dave G |
December 01, 2004 11:48AM |
|
Roger Mitchell |
November 30, 2004 11:57AM |
|
Scott Green |
November 30, 2004 01:25PM |
|
Russ Sperry |
November 30, 2004 02:15PM |
|
Jerry Day |
November 30, 2004 02:33PM |
|
Russ Sperry |
November 30, 2004 04:00PM |
|
Jerry Day |
November 30, 2004 04:49PM |
|
Scott Green |
November 30, 2004 07:26PM |
|
Jack Ways |
November 30, 2004 09:25PM |
|
Jerry Day |
December 01, 2004 09:42AM |
|
Russ Sperry |
December 01, 2004 04:30PM |
|
Gary |
December 01, 2004 06:28PM |
|
Dick Seelye |
December 01, 2004 07:28PM |
|
Russ Sperry |
December 01, 2004 08:20PM |
|
Gary |
December 02, 2004 02:38PM |
|
Russ Sperry |
December 02, 2004 11:56PM |
|
Dan Robirds |
December 03, 2004 10:05AM |
|
Herb Kelsey |
December 03, 2004 05:08PM |
|
Scott Green |
December 03, 2004 05:23PM |
|
Russ Sperry |
December 03, 2004 06:36PM |
|
Mike Trent |
December 08, 2004 06:58PM |
|
Russ Sperry |
December 09, 2004 07:15PM |
|
Scott Green |
December 09, 2004 11:40AM |
|
Rich Muth |
December 09, 2004 11:54AM |
|
rdmstr |
December 04, 2004 09:33PM |
|
Jim Spicer |
December 02, 2004 09:01AM |
|
Rodger Polley |
December 02, 2004 09:58AM |
|
J.B.Bane |
December 02, 2004 07:42PM |
|
SVCartoad |
December 03, 2004 11:47AM |
|
K. Masterson |
December 04, 2004 08:52PM |
|
SVCartoad |
December 05, 2004 11:26AM |
|
J.B.Bane |
December 05, 2004 01:42PM |
|
J.B.Bane |
December 05, 2004 01:48PM |
|
Paul Gibbs |
December 05, 2004 03:51PM |
|
J.B.Bane |
December 05, 2004 07:06PM |
|
Herb Kelsey |
December 07, 2004 05:07PM |
|
Dave G |
December 08, 2004 09:50AM |
|
Jerry Day |
December 09, 2004 07:14AM |
|
Herb Kelsey |
December 09, 2004 05:06PM |
|
Jerry Day |
December 10, 2004 07:54AM |
|
J.B.Bane |
December 12, 2004 12:45PM |
|
Dick Seelye |
December 12, 2004 01:03PM |
|
Greg Scholl |
December 13, 2004 09:25AM |
|
Chester Louis |
December 13, 2004 07:43AM |
|
Russ Sperry |
December 14, 2004 11:09PM |
|
Jack Ways |
December 15, 2004 02:33AM |
|
Herb Kelsey |
December 07, 2004 05:09PM |
|
J.B.Bane |
December 08, 2004 01:28PM |
|
Don Richter |
December 08, 2004 02:09PM |
|
Herb Kelsey |
December 08, 2004 06:15PM |
Sorry, you can't reply to this topic. It has been closed.