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| Re: SMEE (243951) | |||
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Re: SMEE |
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Posted by VictorM on Fri Apr 21 18:55:18 2006, in response to Re: SMEE, posted by Brighton Private on Fri Apr 21 11:33:45 2006. That's right - electrically operated air brakes activate much faster than brakes that require variations in train line air pressure to activate. They also activate the brakes much more evenly. It should be noted that, while electrically operated air brakes have been in subway use for nearly a century, most of the braking in subway cars built in the last 60 years is done, in effect, by converting the traction motors to generators, and dissipating the energy thus created through high capacity resistors, the air brakes providing only a supplemental braking force. |
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