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electronic defect detectors
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yes, you are right, there is a certain upper maximum on the temp, it's pretty high, I think our temp sticks are 200 or 250. But since a roller bearing can fail very quickly they also compare to the other bearings in an attempt to catch 'em before they get to melt down. <br />Those wild's are just like our impact detectors, I didn't know if anyone else had 'em yet or not. I guess they do. And yep, they are a royal pain in the you know what. Just about every eastbound grain train that goes over the one on our line (just east of Dalhart Tx) has bad orders to set out here, and like yours if the defect is bad enough they restrict your speed or you have to set it out immediately. Spalling is very similar (at least in sound but instead of a thumpa thumpa, its more of a growl) to a flat wheel, but the tread of the wheel itself is kindof falling off, it won't be flat, just a punch of "pits" on the tread of the wheel. <br />I forgot all about the AEI scanners, ours do the same thing, what time started by, end by, how fast etc, they completely slipped my mind. <br />Also, if they wanted to, quite a few of our engines have GPS equipment on 'em, so they can track them that way. <br />Also, some auto racks and refers have GPS on them too.
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