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Broken knuckles in inconvenient places
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<p>[quote user="oltmannd"]</p> <p>Unless the bridge is on a grade, load or empty doesn't matter. Braking force would be the same. Figure about 20%-25% of the light weight of the car. Figure empty cars weigh about 25 tons and a knuckle is good for 250,000#. Roughly 20 cars.[/quote]</p> <p><span style="font-family:verdana,geneva;font-size:small;">If a standing car has its brakes applied hard enough to slide the wheels, are you saying that the sliding resistance will be the same no matter whether the car is loaded or empty?</span></p>
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