RodTungsten
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Quite some thread drift here so I will veer a bit more. We are making the mechanicals for locomotive speedometer calibrators with a local specialist firm.
We are told that sensors are taken off wheels and stuck onto these calibrators to be rotated at various speeds. Calibration is then completed by reading indicated loco speed off a chart of wheel diameters and twiddling something in the cab to correspond. Needed because wheel/ tyre diameter changes quite quickly.
We are told that sensors are taken off wheels and stuck onto these calibrators to be rotated at various speeds. Calibration is then completed by reading indicated loco speed off a chart of wheel diameters and twiddling something in the cab to correspond. Needed because wheel/ tyre diameter changes quite quickly.