I Play Hookey from Work! T Gauge Today!

rray Aug 4, 2008

  1. FloridaBoy

    FloridaBoy TrainBoard Member

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    T scale!! You gotta be kidding!!!! I am struggling with my fingers putting together the final scenery on my Z scale layout, and sitting right next to its big brother N scale in my living room, I just can't imagine an electric trains so tiny!!!

    I think I'll stick to Z, but my hat is off to you guys. Please do not go blind......

    Ken "FloridaBoy" Willaman
     
  2. SJ Z-man

    SJ Z-man TrainBoard Member

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    Armand,

    Rob said you were working on a speed controller for the T gauge. We 'scoped it and it is pure DC 0-4.5V. The powered units seem to have a threshold to start, maybe from magnetic inertia or diode thresholds if they are integrated into the lighting.

    If you make a simple PWM controller (or likely any Joerger, Zthek, etc.) with a limited supply, it should improve the low speed operation.
    .
     
  3. Cleantex

    Cleantex TrainBoard Member

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    Hi Jeff,

    It seems that I wrote this already somewhere today :embarrassed2:
    but not all PWM function the same, and the task is to integrate in the existing powerbox.
    Anyway, I have alot of other things to do, so we will see.
     
  4. Cleantex

    Cleantex TrainBoard Member

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    So guys,

    I also played today :w20z6q:
    instead of doing my job...

    Some surprise on the video, but you will see :monkey:

    Seriously, it always runs best with my own PWM circuit, at 3Volt fix.
    I tested also Jörger I and II.
    Jörger I start about 4,5 Volt, too much high to integrate in the existing box.
    And Jörger II with processor was not made for this sort of pager motors.
    But my pulse circuit works for the moment with AC, so for DC some modifications
    will be necessary. But if you want to try, the AC version schematics are some
    page upper from here.

    [ame="http://www.youtube.com/watch?v=2xgY58PZAPY"]YouTube - T-Gauge evaluation[/ame]
     
  5. shamoo737

    shamoo737 Staff Member TrainBoard Supporter

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    Pretty cool stuff Armand.
     
  6. kimvellore

    kimvellore TrainBoard Member

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    Armand,
    Now I can put a voice to the face too. The hanging train is pretty cool... opens up new modeling opportunities, this could be made into a roller coaster in Z scale

    Kim
     
  7. rray

    rray Staff Member

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    Nice Armand! i did not know they would run upside down! That's great! :D
     
  8. Don A

    Don A TrainBoard Supporter

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    ...so much for worrying about a maximum grade of about 4%...

    ...don
     
  9. Cleantex

    Cleantex TrainBoard Member

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    Hi Don,
    Yes, and here we have a limit about 184° :bashful:
    But it will stay a toy, from which we can dig out a lot of parts
    for our own use.
    We have in Z no magnetic rails, but interesting to see how much
    rusted will be those from T after 1 year in wet garage :beat-up:
    I will wait for the promised flex rails, that will open us a lot of
    opportunities,
    from Bejing to bashing bashing bashing.....
     
  10. HemiAdda2d

    HemiAdda2d Staff Member

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    I can honestly say I have never seen a model train run upside down before today. Wow!
     
  11. Chris333

    Chris333 TrainBoard Supporter

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    WOW! what a magnetic personality : )
     
  12. DanMacK

    DanMacK TrainBoard Member

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    Cleantex, that is awesome! Z scale suspended monorail anyone?

    On another note, I know the mechanism has been proven too short for an F7, what about an FP7? NP had them as well... might afford the last little bit for the mech. David Smith said it is about 27.5mm long, that should be perfect for a 37mm long F unit...
     
  13. rray

    rray Staff Member

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    Yes, I was thinking an FP7 would be a great choice too! I just need to find the time to start on the nose piece. I would like to Laser it out of clear acrylic, so this weekend after work i am going to stop by Tap Plastics and see what I can find.
     
  14. DanMacK

    DanMacK TrainBoard Member

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    Nice :D Can't wait to see what you come up with. I'm sure all eyes are on you :)
     
  15. Cleantex

    Cleantex TrainBoard Member

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    I opened one of the shrimps today,
    and surprising, found that the gearbox and power strips are
    integrated with the shell, so bashing not so easy.

    [​IMG]
     
  16. Chris333

    Chris333 TrainBoard Supporter

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    Does anyone know the gear ratio on these yet? Or how many times does the motor rotate to get the wheels to revolve once.

    Just curious.
     
  17. Cleantex

    Cleantex TrainBoard Member

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    Today, last Tgauge investigation, Oscilloscope-day,
    before it disappeared to shell.

    The drive runs best with 100Hz pulse, Sinus-wave.
    This is exactly generated by the small AC circuit, that I use.
    Jörger use square-wave at 50Hz, not best variante.
    So, to adapt the circuit to battery drive it will necessary to add a 100Hz Sinus-generator circuit.
    Other modification could be interesting concerning the infrared direction switches.
    Sometimes it would be more useful to stop a certain time in the station, and after continu in the same direction. This option just to one of both switches.
     
  18. rray

    rray Staff Member

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    That is exactly what I want Armand, slow speed with your 100Hz pulse AND use the infrared switch to stop, delay a time, and continue in the same direction. (station stops) :D But use only one channel for the station stops, and another channel for reverse.

    Stop at several stations, and reverse at the last station. Parallel connections for several intermediate stop sensors, and 2 connections for end of line reverse sensors, time delay at each stop.
     
  19. HoboTim

    HoboTim TrainBoard Supporter

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    3 pole motor!

    Armand,

    How would a 3 pole, 4mm, 9 volt motor fair in your analysis? I am talking about the tiny motor that the Electronic Goldmine is selling!

    http://www.goldmine-elec-products.com/prodinfo.asp?number=G13566&variation=&aitem=1&mitem=1

    This is the same little motor I used in the MOW Truck I scratchbuilt!

    ----------------------------------------------------------------------------

    Re-engineering~ Everyone is talking of shortening the motorized car "with its original" gearing system. Marklin sells many different sizes of gears of which could be used with the above 3 pole motor to create a slower moving, geared down loco that could be made into an F7 with no problem. My plans are a little bit more modern, an F40ph in either Amtrak or the Florida Fun Train!!!!!

    What are you modifying your T-Gauge into???

    Hobo Tim
     
  20. animek

    animek TrainBoard Member

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    Tim, how did you took the weight off the shaft?

    Ben
     

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