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  1. tournaphil

    1/16th radio-controlled scale model of Komatsu D575A-2

    The content creator (We) deleted the links on HEF and the 16 vids on YouTube of all the field tests intentionally. Bots (or humans) in Kazakhstan had scraped this site and reset links from those video links to links at their end leading to their own websites and to places other than the YouTube...
  2. tournaphil

    1/16th radio-controlled scale model of Komatsu D575A-2

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  3. tournaphil

    1/16th radio-controlled scale model of Komatsu D575A-2

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  4. tournaphil

    1/16th radio-controlled scale model of Komatsu D575A-2

    Update December 2020. D575A-2 alterations and improvements to the blade load and push cycle programming. New field test video. https://www.youtube.com/channel/UCGzwwUsynsd0iHu6VIUAeJA/videos
  5. tournaphil

    1/16th scale radio-controlled Komatsu D455A-1

    We've put the last field test video of the D455A-1 up on the Global channel. Here's the master link to all the field test videos of the five different tractors. It's just simply a place where all the field tests can be found in the one location...
  6. tournaphil

    1/16th scale radio-controlled Komatsu D455A-1

    And as well as the videos, here is a couple of pics from the field tests.
  7. tournaphil

    1/16th scale radio-controlled Komatsu D455A-1

    We took the D455A-1 and the D575A-2 down to the closed coal mine for some field testing. The D455A performed well ripping as the video shows. We also have a walk-around of the two tractors. A rare sight both these tractors at the one location. We'll add some more videos of the D455A-1 pushing...
  8. tournaphil

    1/16th scale radio-controlled Komatsu D455A-1

    The Komatsu D455A-1 is finished. Everything works nicely, blade tilts, ripper pitch works. We will be running it down at the closed coal mine soon. We'll put some vids up on the Gloal General Robotics channel when they are done and leave a note here. Here are some finsihed pics.
  9. tournaphil

    1/16th scale radio-controlled Komatsu D455A-1

    Correction: I wrote in my post #5 that the D455A-1 and the HD-41/41B use the same engine, a Cummins V1710-C-700. The D455A-1 uses the Cummins V1710-C-800 engine rated at 650hp in the D455A-1. Thanks for the info bigiron.
  10. tournaphil

    1/16th scale radio-controlled Komatsu D455A-1

    More progress on the D455A. A lot of finishing work and painting is done. The electrics were installed including the H-bridge motor controllers and the wiring looms made up and installed along with the radio control gear. We field tested the bare tractor rolling frame for the first time under...
  11. tournaphil

    1/16th radio-controlled scale model of Komatsu D575A-2

    Long time since our paths have crossed Mr C. PM me anytime. Cheers
  12. tournaphil

    1/16th scale radio-controlled Komatsu D455A-1

    Sorry, that's not something we do. Thanks for the inquiry.
  13. tournaphil

    1/16th scale radio-controlled Komatsu D455A-1

    We got the track frames and front idler recoil all fitted up and the track frame covers made and bolted up. The recoil is functioning nicely with enough sag in the chains like the 1:1 but not taut - enough to roll freely and not throw a track.
  14. tournaphil

    1/16th scale radio-controlled Komatsu D455A-1

    The grouser plates are cast zinc, then the four holes for the grouser bolts are drilled in a jig and bolted to the track chains. It just looks used at this point since the paint is currently only to prevent flash rust to worked steel surfaces as mentioned earlier. There would be about 1000 hrs...
  15. tournaphil

    1/16th scale radio-controlled Komatsu D455A-1

    Current progress pic. Track frsame covers and panel work is next.
  16. tournaphil

    1/16th scale radio-controlled Komatsu D455A-1

    Ripper lift and pitch rams fitted up and tested.
  17. tournaphil

    1/16th scale radio-controlled Komatsu D455A-1

    "D455A-1's began at s/n 1001." And thats even just my guess since Komatsu seem to have begun s/n's for their machines at 1001. I have no proof they did not start D455A-1's later at say 1011 etc etc for example. The 1500+ s/n machines underwent some major cosmetic changes like the hex cab for...
  18. tournaphil

    1/16th scale radio-controlled Komatsu D455A-1

    Progress update: The ripper drawbar beam is made and test fitted and the lift and pitch rams will be made next week. We assembled the tractor so we could get the blade lift rams fitted up and tested and make sure the lift rams and tilt ram working through the adjustable K-Link and diagonal...
  19. tournaphil

    1/16th scale radio-controlled Komatsu D455A-1

    Progress update: The rops is made from some nice resistance welded tube and tig-welded. The ripper draft beam is also made and I am currently making the track frame covers. All the parts for the blade and ripper lift and pitch rams are made - soon as the track frame covers are made we'll fit...
  20. tournaphil

    1/16th scale radio-controlled Komatsu D455A-1

    Another progress report on the D455A. The Komatsu K-Link type diagonal bracing is fabricated and fitted up and adjusted for the correct side-load transfer and tilt. The Komatsu K-Link with the three ball-joints on the bar that connects the front ends of the draft arms allows for tilting of...
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