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| Re: Strange Acoustical Resonances Gives Current Subway Cars an R9 Bearing Whine Sound at Union Square (1508245) | |||
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Re: Strange Acoustical Resonances Gives Current Subway Cars an R9 Bearing Whine Sound at Union Square |
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Posted by Mike Cruz on Mon Mar 25 22:11:13 2019, in response to Strange Acoustical Resonances Gives Current Subway Cars an R9 Bearing Whine Sound at Union Square, posted by heypaul on Sat Mar 23 13:44:36 2019. It's the sound from the rails being ground & reshaped. It goes away after time. |
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