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[quote user="daveklepper"] If it vibrated over the entire run, then someone in management is not doing his/her job.   During commissioning stage, the test operation, the final balance between tread-, dynamic or regenetive- and magnetic-track- braking is established on each car.  This not something that can just be set at the factory and left alone.  I watched this process at Jerusalem light rail, and I am sure it is done with new equipment for the city and suburbs Dallas Light Rail system.   Then, just before regular service, the minor flat spots that developed during the adjustment process, which are inevitable, are cured with the shop's wheel truing machine.  What you are telling me is that the streetcars did not visit the light rail truing machine after their brake adjustment process (the light rail cars did), and the streetcars have minor wheel flat spots.   This is very bad.  If left alone, rail corregations will appear, and the whole operation will become very noisy and rough.  You could do Dallas a favor by writing a complaint letter and you can quote me and give people my email address: <a href="mailto:daveklepper@yahoo.com">daveklepper@yahoo.com</a> [/quote] I am not an engineer.  As I noted in my post, my reaction was purely personal.  From an engineering perspect the ride may be OK.  My personal reaction was that the car did not feel as solid as DART's light rail vehicles, which I ride frequently. Tinny is a word that comes to mind when comparing the streetcar with the light rail vehicles.  Again, that is just a personal reaction.  It is not based on a scientific or engineering analysis.
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