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| Re: R Train May Run 8 Cars Instead of 10...Re: Is There an Update on the R160's Wheel Wear Problem? (1640038) | |||
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Re: R Train May Run 8 Cars Instead of 10...Re: Is There an Update on the R160's Wheel Wear Problem? |
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Posted by Stephen Bauman on Sat Mar 15 11:31:10 2025, in response to Re: R Train May Run 8 Cars Instead of 10...Re: Is There an Update on the R160's Wheel Wear Problem?, posted by Train Dude on Sat Mar 15 10:30:26 2025. I was trying to apply some general engineering principles to explain how wheels could momentarily lock. Momentary locking could explain excess wheel wear, if the locking periods were of extremely short duration.These principles apply but may account for less than 0.1% of wheel wear. I don't know. As I've said, I have a solution in search for a problem. It could be something as basic as a change in brake shoe material. We know the NTT brake shoes initially showed excessive wear because regenerative braking did not work. I have not seen recent accounts of brake shoe wear problems. Perhaps the brake shoe wear solution just substituted excess wheel wear. Who knows? We will have to wait until NYCTA announces a cause. I hope that announcement will be more honest than their hiding brake failure as the cause of the Williamsburg Bridge collision. |
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