I have an MTH 4-6-4 J-1e PT Hudson Steam Engine w/Proto-Sound 3.0 that will not go any faster than 42 to 50 scale MPH.  Even when I use the boost in the DCS it won't go any faster.  Any thoughts on what might be wrong?  Thanks! 

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Have you perhaps loaded the wrong sound or chain files?  If not, have you tried loading the correct chain files for this locomotive?  Of course, the actual MTH product number is useful when asking questions like this.

Within the operating speed range, does it run at the correct scale speed?  And do you get exactly 4 chuffs per driver-wheel revolution?

If you load the engine with a bunch of cars, does the max achievable speed drop?

Are you set to run conventional mode?  If so, does the speed also max out at 50 MPH with throttle at full?

stan2004 posted:

Within the operating speed range, does it run at the correct scale speed?  And do you get exactly 4 chuffs per driver-wheel revolution?

If you load the engine with a bunch of cars, does the max achievable speed drop?

Are you set to run conventional mode?  If so, does the speed also max out at 50 MPH with throttle at full?

ALL Good ideas, and this will tell us about the state of the engine.

Did you buy this new? Has anyone altered anything?

" on Sour mash and cheap wine " ??

Why go back to DCC when I have DCS!

What would help you determine if you have some sort of mechanical binding would be a voltage and amp meter.  If the engine is drawing excessive current at higher speeds and track voltage drops, it would point to mechanical or motor as pointed out earlier.  G

 

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