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Reply to "Can running a heavy train harm motors?"

Can motors tend to run a lot cooler than the old open frame motors IME and generate a lot less heat. I doubt 10 cars would cause much problems unless there are some pretty severe grades.  People mentioned making sure the cars were lubricated, but the engine is important as well, if the lube in the gears on the engine is old or lacking, the gears can bind and that will lower the efficiency of the transfer of power to the wheels, which will in turn cause the motor to work harder and heat up. If you run it for a while and you can still touch it, likely you are okay, but it never hurts to try and make them run better. The old open frame motors in the power war engines would take heat a lot better (you could melt wires, and if the coils on the engine melted it would go splat), the new engines with their circuit boards are less tolerant, but as long as the engine is simply warm you should be fine. 

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