Start Voltage??

Discussion in 'DCC & Electronics' started by Railroy19, Apr 25, 2006.

  1. Railroy19

    Railroy19 New Member

    I'm trying to get one of my engines to start faster from the stopped position to match the speed of another engine to set up a consist and have the two engines run approxamitly
    at the same speed.
    I changed cv 2 start voltage all the way from number 2 to the number 50 in increments
    but I can not see any change in speed. I have no decoder docs because they did not come in the box with the new engines Atlas N gauge Alco RS-11 and one SD-26.
    My other settings are CV 5 max volts 255 CV 6 Mid volts 128. CV 3 Acceleration 8
    CV 4 Deceleration 8.

    Anyone have an idea of what I'm doing wrong or can suggest what settings I should start with.

    Thanks to all.
  2. Agatheron

    Agatheron Member

    Start voltage is simply the CV to ensure that your locomotive starts moving when your throttle reaches a value of something greater than 0. It has no effect on speed otherwise. Matching speeds comes more from mid range voltage and top voltage... If you really want to get fancy you can apparently do speed scales as well...
  3. Railroy19

    Railroy19 New Member

    I found out what model decoders are in these engines so I downloaded the docs from the mfg. website and changed my settings to match the doc's and that worked out very well.
    I guess you have to take into consideration the speed of each different motor types in each engine. I now have these two engines running side by side with only two numbers of speed apart.

    Thanks Agatheron
  4. MasonJar

    MasonJar It's not rocket surgery


    It sounds like you have solved the problem, but here is one other possibility to consider if the MU-ed locos are not behaving:

    Those are relatively "slow" values for accel and decel... You might make some changes to those values, considering your first sentence of the post.


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