1938 Tube Stock First And Second Gears

Discussion in 'TSW General Discussion' started by Railfan1985, May 5, 2022.

  1. Railfan1985

    Railfan1985 Well-Known Member

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    I was wondering why there are two forward gears. You are told to use forward one. There is forward two, which isn't mentioned. When would you use forward 2?
     
    Last edited: May 5, 2022
  2. Joethefish

    Joethefish Staff Member

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    Use forward 2 in normal conditions. Forward 1 limits power to help in icy conditions.
     
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  3. Railfan1985

    Railfan1985 Well-Known Member

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    Ah, ok, thanks joethefish
     
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  4. Mr heff

    Mr heff Well-Known Member

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    If I'm not mistaken, i think forward 1 is running the electrical motors in series and forward 2 is running them in parallel. Basically, electricity is either supplied to the motors via a single channel that supplies all motors, or supplying each motor with it's own channel, thus increasing the combined power output of the motors. Maybe.
     
  5. solicitr

    solicitr Well-Known Member

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    Does the mode switch in the 72 Stock serve the same function?
     
  6. solicitr

    solicitr Well-Known Member

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    IIRC, that is how the speed controller works on these trains. On the '72 the positions are even labeled series-parallel-shunt. I'm pretty sure the switch in question simply limits power by dumping off through a resistive load.
     
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