Paul_D_North_Jr petitnj We have a painting in the offices of the Jackson Street Roundhouse where the flanges are on the outside of the rail for a logging railroad. . . . [snipped - PDN.] Actually were such things, used on 'pole roads' where small trees were used as the rails of the track. Usually on very backwoods, primitive, small-scale logging railroads. Hard to find an illustration today or on-line, but there were some back in the 1960's - 70's - in either "Along the Iron Pike" or "Believe It or Not" in the old Railroad magazine, or maybe one of John T. Labbe's logging railroad articles in the NMRA Bulletin back then. See: http://www.reliance-foundry.com/blog/single-and-double-flanged-metal-wheel-difference - "While employed for many of the same uses as single-flanged wheels, double flanged models offer an extra layer of protection from mishaps in some applications due to the added guidance the provide." http://www.gearedsteam.com/dunkirk/components.htm - top half of page. http://explorepahistory.com/hmarker.php?markerId=1-A-1BA - from about the middle of this page on "Climax Locomotives Historical Marker": "Lumber companies could purchase their Climax Class A with three types of wheels: concave wheels with double flanges to run on track built from rough-hewn logs; geared wheels for traction on wooden rails; and conventional flanged wheels for steel-rail track." [emphasis added - PDN.] See also this photo: http://www.gearedsteam.com/climax/images/ark-trvlr-willamette.jpg See also the 2nd heading of this web page: https://saveitforparts.wordpress.com/tag/steam-locomotive/ and http://www.freerails.com/gallery/5632/5632_171128_020000000.jpg - Paul North.
petitnj We have a painting in the offices of the Jackson Street Roundhouse where the flanges are on the outside of the rail for a logging railroad. . . . [snipped - PDN.]
Actually were such things, used on 'pole roads' where small trees were used as the rails of the track. Usually on very backwoods, primitive, small-scale logging railroads. Hard to find an illustration today or on-line, but there were some back in the 1960's - 70's - in either "Along the Iron Pike" or "Believe It or Not" in the old Railroad magazine, or maybe one of John T. Labbe's logging railroad articles in the NMRA Bulletin back then. See:
http://www.reliance-foundry.com/blog/single-and-double-flanged-metal-wheel-difference - "While employed for many of the same uses as single-flanged wheels, double flanged models offer an extra layer of protection from mishaps in some applications due to the added guidance the provide."
http://www.gearedsteam.com/dunkirk/components.htm - top half of page.
http://explorepahistory.com/hmarker.php?markerId=1-A-1BA - from about the middle of this page on "Climax Locomotives Historical Marker": "Lumber companies could purchase their Climax Class A with three types of wheels: concave wheels with double flanges to run on track built from rough-hewn logs; geared wheels for traction on wooden rails; and conventional flanged wheels for steel-rail track." [emphasis added - PDN.] See also this photo: http://www.gearedsteam.com/climax/images/ark-trvlr-willamette.jpg
See also the 2nd heading of this web page: https://saveitforparts.wordpress.com/tag/steam-locomotive/ and
http://www.freerails.com/gallery/5632/5632_171128_020000000.jpg
- Paul North.
Maybe it is just as well that I was isolated from the internet yesterday.
Johnny
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