Forums Modeling Annual Build Challenge
  • Topic: Devon's MIK 2021- Compressed air loco

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    • January 9, 2021 10:14 PM EST
      • Waverly, Alabama
         
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      Great start, Devon.  Nice lathe work.

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    • January 9, 2021 11:13 PM EST
      • Pleasanton, CA
         
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      That is a great start, Devon!

       

    • January 10, 2021 8:06 PM EST
      • Post Falls, Idaho
         
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      Not much progress today. Helped another participant fabricate his project. Ben came over and he worked on his tank car and I provided materials, tools, and a smidgen of advice. 

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    • January 10, 2021 8:12 PM EST
      • Waverly, Alabama
         
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      Helping friends is progress in my book 

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    • January 10, 2021 9:31 PM EST
      • Phippsburg, Maine
         
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      Cool!  That has the right look so far.

    • January 11, 2021 10:52 PM EST
      • Denver, Colorado
         
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           I'm seeing it. The "rivets" you bought will definitely be a lot of fun!

       

       

       

       

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    • January 12, 2021 11:36 PM EST
      • Post Falls, Idaho
         
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      Bondoed the tank and built the rear deck

       

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    • January 13, 2021 9:27 AM EST
      • Waverly, Alabama
         
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      Looking good, Devon. I know I’m getting way ahead of you here, but where are you getting the sound files for this compressed air loco? 

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    • January 13, 2021 10:20 AM EST
      • Post Falls, Idaho
         
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      Dan Hilyer said:

      Looking good, Devon. I know I’m getting way ahead of you here, but where are you getting the sound files for this compressed air loco? 

      Thats a dang good question. I wouldn't even begin to know what one sounded like. Much less find a sound file of one running. I might just have to make choo choo sounds with my mouth on fart noises with my armpit 

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    • January 13, 2021 6:31 PM EST
      • Waverly, Alabama
         
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      Devon Sinsley said:
      Dan Hilyer said:

      Looking good, Devon. I know I’m getting way ahead of you here, but where are you getting the sound files for this compressed air loco? 

      ........ or fart noises with my armpit 

      Why not use the real thing 

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    • January 13, 2021 7:06 PM EST

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      Devon Sinsley said:
      Dan Hilyer said:

      Looking good, Devon. I know I’m getting way ahead of you here, but where are you getting the sound files for this compressed air loco? 

      Thats a dang good question.

       

       

      I would ASSume they would have sounded close to the same as a steam driven one minus the ...never mind....steam is compressed air in its self technically speaking ?

       

       

      Right ?

       

       

       

       

       

      Bump for post count

    • January 13, 2021 7:09 PM EST
      • Southern Oregon
         
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      Great video,  I notice that the cylinders are finned for heat dispersion, I don't think I had ever noticed that before.

    • January 13, 2021 7:21 PM EST
      • Pleasanton, CA
         
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      That is an awesome video! Sucker is pretty quiet!

    • January 13, 2021 8:40 PM EST
      • Post Falls, Idaho
         
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      So basically all the sound it makes is the chuff which is more or less what I expected. 

       

      As to the fins on the cylinders it appears some do some dont. I am going to attempt them because it does seem unique to the design. 

       

      So one of the biggest challenges is behind me. I wanted to make my own battery packs that fit in the tender. So I bought 2 bucks worth of batteries at the dollar store. I'm up to 6 bucks. I then found a peace of PVC pipe that would be about right for four batteries. I am going to put two packs of 4 AA batteries for now. That gives 12-13v. Eventually I will switch to AA size lithium ion running each pack in series then the two packs in parallel which should give me 14.4v and 5000 or so mAhs.  

       

      So here's what I came up with.

       

       

      One thing about dollar store batteries is they don't last long at all. I was initially getting 13v but by the time I got done playing was under 12v. But it will get me where I need to go. 

       

      This all fits very nice and snug in the pipe. I will make an "air hose" that is the wires for the plug to plug in the tender to the loco. 

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    • January 13, 2021 9:16 PM EST
      • Waverly, Alabama
         
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      Nice battery holder, Devon.  I hope the hammer wasn't necessary to get them in the pvc pipe 

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    • January 13, 2021 9:20 PM EST
      • Post Falls, Idaho
         
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      That was in reserve in case it didn't work 

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    • January 13, 2021 9:23 PM EST
      • Waverly, Alabama
         
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      You plan better than I do.  I would have to go looking for the hammer or more than likely just start beating it on the table, floor, wall or whatever or whomever was close by 

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    • January 13, 2021 9:41 PM EST
      • Peoria, NW of Phoenix, Arizona
         
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      Dan Hilyer said:

      Nice battery holder, Devon.  I hope the hammer wasn't necessary to get them in the pvc pipe 

      Dan that’s why the batteries were dying he beat them to death

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      The Babs River Railway

      We can do that, but its gonna cost you... a lot more

       

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