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  • Topic: Geared locos speed

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    • February 10, 2020 4:34 PM EST

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      slow!

      15 to 25 I think... mostly pretty darn slow...

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    • February 10, 2020 4:50 PM EST

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      Slower than that.  graham county shay 1925 holds the record for fastest shay clocked: 18 mph

    • February 10, 2020 7:00 PM EST

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      Ahh... grasshopper!!!

       

      "The Heisler was the fastest of the geared steam locomotive designs, and yet was still claimed by its manufacturer to have the same low-speed hauling ability. "

      from Wikipedia... the question was: What was the typical and top speeds of the Climax, Heisler and Shay locos?

       

      This article indicates they hit 20 mph in testing: http://www.gearedsteam.com/heisler/articles/60_ton_heisler/article.jpg

       

      I think you will find that the Heisler, the fastest of all geared locos, and advertised as such, could probably close in on 25 mph, and were faster than shays.

       

      Greg

       

       

       

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    • February 11, 2020 8:47 AM EST
      • Easton , Massachusetts
         
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      The slower speed was for pulling power

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    • February 11, 2020 9:44 AM EST
      • Saint Johns, Florida
         
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      Sean McGillicuddy said:

      The slower speed was for pulling power

      <sarcasm> Gee, really? I thought is was so the logs wouldn't fall off the train!</sarcasm>

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    • February 11, 2020 9:58 AM EST

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      Nah the crews loved them getting paid by the hour.

    • February 11, 2020 11:04 AM EST

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      Hi Folks;

       

      Just theory, I know.  Still wonder how fast geared locomotives may have been if someone had invented a steam version of the Wankel rotary engine.  It could have left the boiler starved for steam.  Not sure, but it's a fun thought to noodle around.

       

      Best, David Meashey 

    • February 11, 2020 1:36 PM EST

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      I wonder about the class a and early horizontal B climaxes with the two speed gearbox. 

    • February 11, 2020 2:23 PM EST

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      It was a bit hard to find actual speeds, the manufacturer's brochures I found on the Heisler just indicated they could go faster if needed due to the design of the rotating mass, besides indicating that the design had moving parts up away from dirt and grit.

       

      It was a smart design, but not as sexy as that big crankshaft on a shay in my opinion, it's almost scary standing near one when running (was at Georgetown loop, invited into the yard)

       

      Greg

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    • February 13, 2020 7:41 PM EST

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      You could measure the track length and calculate it, but I guarantee that is a lot faster than you think in most cases.

       

      15 miles per hour is 22 feet per second...

       

      convert to inches = 264 inches per second, and then divide by 20.3 to get scale:  13 inches per second.

       

      Mark out 26 inches and adjust speed to cover that in 2 seconds (easier to get a good measurement) and you would have pretty much the top speed of that loco.

       

      10 miles per hour would be 8.66 inches per second...

       

      Greg

      This post was edited by Greg Greg Elmassian at February 13, 2020 7:49 PM EST
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    • February 13, 2020 8:05 PM EST

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      timmyd DeHan said:

      Does this look about right for speed of the Shay? 

       

      Yep !

    • February 13, 2020 8:08 PM EST

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      More interested in the "petticoat junction" water tank outside though.

    • February 13, 2020 9:07 PM EST
      • Port Orchard, Washington
         
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      lorna dane said:

      Nah the crews loved them getting paid by the hour.

      Railroad crews actually get paid by the mile... So yah..

    • February 13, 2020 10:29 PM EST
      • Southern Oregon
         
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      Too fast by half.

    • February 13, 2020 10:42 PM EST

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      At around 53 seconds, you can actually see the rail joiners on the 1 foot track section. You can count the seconds to traverse the track section there and in other places.

       

      Just about 3 seconds for the loco to traverse 1 foot.  (1 foot = 20.3 scale feet)

       

      1 foot per 3 seconds, or 1/3 foot per second... scaling to 1:20.3 (1 foot is 20.3 scale feet) is would be about 6.76 scale feet/second, that is 4.55 scale miles per hour.

       

      Plenty fine...

      This post was edited by Greg Greg Elmassian at February 13, 2020 10:44 PM EST
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    • February 14, 2020 5:35 AM EST
      • Bundaberg, Queensland Australia
         
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      timmyd DeHan said:

      Does this look about right for speed of the Shay? 

      To me that looks just fine, it is a very nice layout from what I can deduce from the video.

      You can calculate till the cows come home but at the end of the day the question is "do I like it?" if the answer is "Yes" then run at that speed.

      I like to think that my railway is a "prototype" as there is only one like it in the world, so I am running "prototypical" trains and speeds its my railway and I will set the speed limit to what pleases me.

       

       

    • February 14, 2020 8:59 AM EST
      • Saint Johns, Florida
         
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      It looks just fine to me too Timmy!

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    • February 14, 2020 9:12 AM EST
      • Pleasanton, California
         
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      Here's the real thing.  The West Side Shays seldom topped 13 MPH.

      This post was edited by Dan DeVoto at February 14, 2020 9:14 AM EST
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