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  1. kvom

    Corliss Steam Engine (Coles Power Models)

    Dashpots are there to close the input valves after cutoff.
  2. kvom

    270 Offy

    For deepening threaded holes, how much smaller than minor diameter do you choose for the drill?
  3. kvom

    270 Offy

    Custom allen wrench for the win!:D
  4. kvom

    Downriver tools

    .net is correct. My brainfart
  5. kvom

    Downriver tools

    Try his email: jeffreylehn@comcast.com
  6. kvom

    3D printed bevel gear

    I have a copy of Gearotics that can model the gear and output an STL. Post all the dimensions, and I'll generate it.
  7. kvom

    270 Offy

    There's something to be said for plunge milling in a chain for the entire length of the slot followed by a finishing pass.
  8. kvom

    HALO 5 radial engine

    I built one of these 7-8 years ago, and used springs from ballpoint pens.
  9. kvom

    Marks Holt 75

    and Big Brother
  10. kvom

    The French horizontal mill with slide valve drawn up by JD Waal in New Zealand

    I used Loctite for a similar cylinder/steam chest joint on the Grasshopper, and it has held very well.
  11. kvom

    The French horizontal mill with slide valve drawn up by JD Waal in New Zealand

    Can you post a link to the plan(s) and part to which you are referring? Remember that Julius builds these in Solidworks, and this software is perfectly capable of designing assemblies that can't be built as drawn.
  12. kvom

    Martin Models

    Showing foresight. :D
  13. kvom

    NMTA 40 vs CAT 40

    Pull studs are locked by hydraulics on CNC mills. A spacer with a vertical slot would allow it to be removed as needed. You'd need to determine if it would be too unbalanced when spinning.
  14. kvom

    Have you ever seen one of these?

    For the cheapest possible rotary, do manual start. The "box" that you find on eBay is just for starting the 3PH motor that serves as the generator. So if you have a pulley on the motor shaft with a rope wrap that can spin it up, you can start it that way. Otherwise you size the box according...
  15. kvom

    Have you ever seen one of these?

    I have a rotary phase converter in my shop. Uses a 7HP GE 3Ph motor. The phase converter box mainly serves to start the motor via its large capacitors. Input is 240V single phase. One of the output legs is 190V, but neither of my machines that it powers complains. Advantage here is that's...
  16. kvom

    India Tools

    I once bought some India-made carbide endmills. They broke if I looked at them hard.
  17. kvom

    Marks Holt 75

    Just take a .032" needle and turn it down. :p
  18. kvom

    Kozo A3 in 1.5" scale

    Sure, ask away. I had my boiler built by Godshall. The error in the plans for the steam dome location was a bummer though. Your build looks quite far along already and high quality. I see you have the axle pump installed. I was advised against it by experienced people at our track.
  19. kvom

    Kozo A3 in 1.5" scale

    I have about $4K in it out of pocket. Would sell it for that. The tender is not an A3 tender and would be additional $900. For the time being I'm not going to the track because of the pandemic.
  20. kvom

    Kozo A3 in 1.5" scale

    I sort of finished it (no headlight) but decided actually running it isn't my thing. It's been sitting in the vault at the track for three years. I probably ought to try to sell it to someone who would run it.
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