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| Re: Of brake stands and ''dramatic braking'' (468095) | |||
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Re: Of brake stands and ''dramatic braking'' |
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Posted by Mr Mabstoa on Sun Jul 29 16:50:45 2007, in response to Re: Of brake stands and ''dramatic braking'', posted by Zman179 on Sun Jul 29 16:45:40 2007. I saw on a documentary that NYC had problems for years trying to get speedometers to work on its trains. The r44-46 speedometers were disconnected because they didn't work properly or were distracting to T/O's.The technology for the current speedometers come from military techware. Something about a laser bouncing from a unit under the car to the road bed and back. Surpirised with all the dirt, grime and conditions in the tunnels that they have stood up so well. (15+ years?) |
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