05-21-2019, 08:43 PM
(05-21-2019, 08:08 PM)ert86 Wrote: Hmmm, the other day I heard one making an unusual amount of loud clunking noises heading south across Columbia. I was all the way at Phillip, far enough that normally I'd only know it's passing because of the crossing signals
I saw one a week or two ago heading south near the University. It was making a repetitive clunking sound, something like what I imagine a wheel with a flat in it might sound like. Not sure if we both heard the same thing. I don’t know much about the details but I know wheels can develop flats due to excessive braking — if the wheel locks up during braking, then a single point on the circumference slides along the track, and it doesn’t take much wear under that circumstance to take the wheel out of circular.