Bachmann Trains & Accessories

Model Train Electric Motors
The electric motor of a model train accelerates the train from rest to 0.620m/s in 21.0ms.?

The total mass of the train is 875g. Find the average power delivered to the train during its acceleration

8J/s

a=(0.62m/s)/(21×10^-3s)=29.524m/s^2 (seems very high)
F=(875×10^-3kg)*(29.524m/s^2)=25.83N
average velocity = 0.31m/s
P=(25.83N)*(0.31m/s)=8J/s

Or you could find the gain in kinetic energy using (1/2)*m*v^2 and divide by time.

Model Train Electric Motors

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Why has my Lionel train stopped working?

I have a Postwar 685 ATSF Hudson steam model train (its not a really a steam engine, its just called that- it has an electric motor) which stopped working. Whenever I put it on the tracks and tried it out, sparks would come from the motor and there’d be a buzzing noise. The motor doesn’t rotate. The track is clean, and I cleaned the motor nicely with alcohol. What could be wrong?

the polarity might be reversed or might not be right.

Model Railway Exhibition 2010 Pt 6