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Re: This MARTA Train Sounds Like An R142

Posted by Jersey Mike on Tue Jun 28 11:20:04 2022, in response to Re: This MARTA Train Sounds Like An R142, posted by r33/r36 mainline on Tue Jun 28 00:29:00 2022.

The B-IV cars got a custom IGBT based DC chopper mid-life propulsion upgrade that replaced the original GE cam controller. I suspect that the M-IV cars use a GTO based straight AC system.

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