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You really think that visually the 0.025" makes *THAT* much difference (in laying track or re-railing cars)? I also keep seeing statements where people think that old equipment will not run on c55. Well, let me repeat: It runs fine on Peco c55 (for the reason I mentioned earlier!)
I just finished reading an article about Steve Van Meter's South Pacific West layout in the Nov. 2012 Model Railroader.The layout uses C55 track from Atlas, ME and Peco (so he has all three brands). The article also mentions "Much of the track, but were he to do it again, Steve would use code 80". But that is all that is mentioned. No further explanation why. I wonder why would someone would go back to code 80 track in N scale. I can see the reasoning for code 80 on N-Trak but why would someone who graduated to constructing their layout using code 55 track want to go back to code 80. Also mentioned is "He wants someone to make a good code 80 turnout that is DCC-friendly". That is another statement I don't understand, but then the whole "DCC-friendly" moniker to me is silly. Nowadays, to me all turnouts are DCC friendly. If anything, it is the locomotive wheels (too wide or too flat of a thread or under-gauge) that aren't DCC-friendly if they short out on the frogs. Sometimes I just don't get it!
Here's the straight poop:Ten or fifteen years, some PhD posted the real info somewhere on the internet, including citing reference material for his statement, that rail doesn't expand or contract an appreciable amount under common temperatures, it's the movement of the wood underneath, which is affected more by humidity than temperature. .......
Well, it was track expansion caused by heat that geve me kinked rails on a 16 foot section with no expansion joints.A six foot section of flex will expand/contract about 1.5 mm over a 100 deg F swing. Most wood about a third of that.Guess the PHD was right if you make a habit of soaking your layout.Al
The note that small flanges jump smaller rails more easily, and it makes sense to me. When trains move vertically, due to warped wood, bad track, etc. it would seem more vertical rail would make for fewer derailments.
A six foot section of flex will expand/contract about 1.5 mm over a 100 deg F swing.Here's another one of my "Why sould anyone do..." questions: What person in their right mind puts a layout somewhere that allows 100 degree F temp swing?