more at scitech.quickfound.net “DC MOTORS AND GENERATORS… DESIGN, APPLICATION, AND OPERATION OF BASIC, SERIES, SHUNT, AND COMPOUND WOUND TYPE DC GENERATORS AND MOTORS.” US Army training film TF9-3106 Public domain film from the National Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and mild video noise reduction applied. The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and equalization (the resulting sound, though not perfect, is far less noisy than the original). Split with MKVmerge GUI (part of MKVToolNix), the same software can recombine the downloaded parts (in mp4 format): www.bunkus.org part 1: www.youtube.com part 2: www.youtube.com en.wikipedia.org A DC motor is an electric motor that runs on direct current (DC) electricity… Two important performance parameters of DC motors are the Motor constants, Kv and Km Brush The brushed DC electric motor generates torque directly from DC power supplied to the motor by using internal commutation, stationary magnets (permanent or electromagnets), and rotating electrical magnets. Like all electric motors or generators, torque is produced by the principle of Lorentz force, which states that any current-carrying conductor placed within an external magnetic field experiences a torque or force known as Lorentz force. Advantages of a brushed DC motor include low initial cost, high reliability, and simple control of motor speed. Disadvantages …
Question by J.D.: Why don’t more SUVs and Trucks have electric motors?
Diesel trains use electric motors because the low-end torque is much greater than a mechanical drive drive train, I was wondering, since low-end torque is essential to starting with heavy dead weight, why more trucks and SUVs don’t have electric motors on the wheels?
PMack – Diesel trains have a diesel engine, but the engine generates electricity that it sends to electric motors attached to the wheels.
Old Man Dirt – Good points, thank you.
Answer by pedro7of9 adds weight
cost a lot
they run well as is
trucks go around corners and stop often…trains dont
Know better? Leave your own answer in the comments!
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Question by garchompagin: where could i look up diagrams of prewar lionel train motors?
im currently working on a 752w engine and i belive when i got the engine, it was put together wrong. if you know a website add a link if you could.
Answer by david c I did two goog searches using these terms:
Lionel 752w engine
diagrams of lionel train motors
Looks like there are a few books
that are published on the subject.
Kalmbach publishes one of them.
I’m not that familiar with train stuff,
but I’m willing to bet you could find a good
contact through one of those links.
Question by FreddieOh!: Why can’t we make trucks like trains, run by electric motors and charged by small diesel generators?
Answer by artgrantz Trains are not charged by small deisel engines, they are charged by large deisel engines. Besides the weight of the engine you would need to add the weight of the batteries and the electric motors. A lot of space would be needed.
Trains are efficient because they can slowly build up speed and then cruise along without stopping. Trucks have to operat ein traffic where they start and stop frequently.
Question by vijay a: what type of dc motors used in electric trains and why?what are the advantage of dc motors ?
i wish to know more about dc motors and its applications in electric train applications
Answer by mike p DC motors are easyer to contron torque and speed by varying the power to armature and field leads. And in braking conditions, they actually turn into generators putting energy back into the grid.