R42 M Train Posted July 11, 2010 Share #1 Posted July 11, 2010 Yesterday I saw R160 9963-9966 on the shuttle. I heard the loud noises from the train that made it sound like a locmotive. I know that means flat spots on the wheels. What can cause that? Also, I'm concerned about ENY's maintenance because the some newest R160s have flat spots. Link to comment Share on other sites More sharing options...
Nova RTS 9147 Posted July 11, 2010 Share #2 Posted July 11, 2010 Yesterday I saw R160 9963-9966 on the shuttle. I heard the loud noises from the train that made it sound like a locmotive. I know that means flat spots on the wheels. What can cause that? Also, I'm concerned about ENY's maintenance because the some newest R160s have flat spots. That's usually a result of the brakes wearing down on the wheel (especially during BIE incidents). Link to comment Share on other sites More sharing options...
INDman Posted July 11, 2010 Share #3 Posted July 11, 2010 That's usually a result of the brakes wearing down on the wheel (especially during BIE incidents). Flat spots are not caused by normal brake wear, it is cause when the brakes lock and the wheel stops turning while the train is still moving. Flat wheel are not as common today as they used to be because most of the time, when a train goes BIE, the brakes don't lock up. Back when steel shoes were used, brakes would lock up alot. Link to comment Share on other sites More sharing options...
Zman Posted July 12, 2010 Share #4 Posted July 12, 2010 Spots often happen when the rails become humid, when dry wheels first encounter wet rails, during the fall with leaves on the track, and sometimes in any weather condition when a strong brake application is made while the train is at a decent rate of speed. Link to comment Share on other sites More sharing options...
QM1to6Ave Posted July 12, 2010 Share #5 Posted July 12, 2010 That's what the little white half circles on the wheel are for- if they are not moving on a specific wheel, it shows that the wheel is locked up when the rest of the train is moving Link to comment Share on other sites More sharing options...
SubwayGuy Posted July 12, 2010 Share #6 Posted July 12, 2010 That's what the little white half circles on the wheel are for- if they are not moving on a specific wheel, it shows that the wheel is locked up when the rest of the train is moving This is true but I should add as some of you know there are other reasons besides locked brake shoes that this could happen. A wheelset that is locked up by something more serious such as a bound up axle bearing etc. which goes undetected and the train continues for some distance, will wear very quickly in a short amount of time Link to comment Share on other sites More sharing options...
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