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Reply to "Runaway engines - Limiting the top speed"

I would not recommend this for a PS-2/3 engine.  If a engine has a failure and takes off, this can occur on Lionel engines also under certain circumstances, there is the emergency stop button.  For conventional operator just roll the throttle back.  Your probably not at full voltage anyway.

 

As far as placing them on a PS-2 engine, the command speed will still not be attained and the system will apply more power via pulses to the motor.  This may effect the integrated sounds and smoke output also.  Your also going to start over working the motor FET.

 

Use of diodes for conventional engines with basic reverse unit is fine.  Placing them on DCS or Legacy systems would be another matter.  You are also going to mess with the scale speed and matched speed accuracy that Legacy and DCS are known for.  G

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