7-1/4 and 7-1/2 Dual Gauge: Difference between revisions
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(Created page with "Category:Standards [http://www.chaski.org/homemachinist/viewtopic.php?f=8&t=94175&sid=7acf5b95dab49ffc983e2cdb4fbdab53&start=12#p257692 Mike Venezia wrote on <i>Chaski.or...") |
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[http://www.chaski.org/homemachinist/viewtopic.php?f=8&t=94175&sid=7acf5b95dab49ffc983e2cdb4fbdab53&start=12#p257692 Mike Venezia wrote on <i>Chaski.org</i>]: | [http://www.chaski.org/homemachinist/viewtopic.php?f=8&t=94175&sid=7acf5b95dab49ffc983e2cdb4fbdab53&start=12#p257692 Mike Venezia wrote on <i>Chaski.org</i>]: | ||
: My track in Jackson, NJ, [[The Iron Acres Railroad]], was a dual gauge railroad. Many visitors came with both gauges (7-1/4 and 7-1/2 inch gauge). It took a bit of experimenting to get it to work but it did. My gauge in the curves was set to a strict 7.562 inch and the straights were about 7.530. We would machine a larger (1/2" wide I think) slot in the switch frog and widen the gap at the points. We then set the Back to Back at exactly 6.875 keeping a very minimal space between the | : My track in Jackson, NJ, [[The Iron Acres Railroad]], was a dual gauge railroad. Many visitors came with both gauges (7-1/4 and 7-1/2 inch gauge). It took a bit of experimenting to get it to work but it did. My gauge in the curves was set to a strict 7.562 inch and the straights were about 7.530. We would machine a larger (1/2" wide I think) slot in the switch frog and widen the gap at the points. We then set the Back to Back at exactly 6.875 keeping a very minimal space between the guard rail and the stock rail. I would put about a 2.5 to 3" lead on each end of the guard rail to bring the train over smoothly and keep them from wandering. I had a few problems with a couple visiting engines that had wheels that were less than 0.750 inch wide but for the most part once I got it figured out we had lots of fun. | ||
: Dual gauge railroads require a lot of close tolerances and a bit more | : Dual gauge railroads require a lot of close tolerances and a bit more maintenance the a railroad set up to run one gauge. If I do build a railroad at my place in PA it will be 7.5" only to cut down on having to be so finicky. | ||
Nick Edwards wrote a detailed description of his * [[Wimberley_Blanco_%26_Southern_Railroad#More_History_on_Dual_Gauge_Track|Wimberley Blanco & Southern Railroad Dual Gauge Track]]. | |||
Revision as of 23:36, 4 August 2014
Mike Venezia wrote on Chaski.org:
- My track in Jackson, NJ, The Iron Acres Railroad, was a dual gauge railroad. Many visitors came with both gauges (7-1/4 and 7-1/2 inch gauge). It took a bit of experimenting to get it to work but it did. My gauge in the curves was set to a strict 7.562 inch and the straights were about 7.530. We would machine a larger (1/2" wide I think) slot in the switch frog and widen the gap at the points. We then set the Back to Back at exactly 6.875 keeping a very minimal space between the guard rail and the stock rail. I would put about a 2.5 to 3" lead on each end of the guard rail to bring the train over smoothly and keep them from wandering. I had a few problems with a couple visiting engines that had wheels that were less than 0.750 inch wide but for the most part once I got it figured out we had lots of fun.
- Dual gauge railroads require a lot of close tolerances and a bit more maintenance the a railroad set up to run one gauge. If I do build a railroad at my place in PA it will be 7.5" only to cut down on having to be so finicky.
Nick Edwards wrote a detailed description of his * Wimberley Blanco & Southern Railroad Dual Gauge Track.