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T s new subway cars put on shelf – again | Dorchester Reporter

By Chris Lisinski, State House News Service May 13, 2021 Chris Lisinski, State House News Service One of the first new Red Line trains is shown being worked on in December 2020. Photo courtesy MBTA ‘Something acting abnormally’ within turning operation The MBTA’s newest Red and Orange Line trains will remain shelved after an investigation into a March 16 derailment identified “something acting abnormally” within their truck frames, officials said. In the latest setback for the CRRC-manufactured subway cars set to replace the entire Red and Orange Line fleets, investigators have found that an unusual issue played a major role in the derailment: the more the newer vehicles travel, the harder it is to turn the truck frames connecting the cars to the wheels.

New MBTA Trains to Remain Out of Service - Banker & Tradesman

New MBTA Trains to Remain Out of Service - Banker & Tradesman
bankerandtradesman.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from bankerandtradesman.com Daily Mail and Mail on Sunday newspapers.

New MBTA Trains to Remain Out of Service

New MBTA Trains to Remain Out of Service The Red and Orange Line trains will remain out of service after an investigation into a March 16 derailment identified something acting abnormally within their truck frames By Chris Lisinski, State House News Service • Published May 10, 2021 NBC10 Boston The MBTA s newest Red and Orange Line trains will remain out of service after an investigation into a March 16 derailment identified something acting abnormally within their truck frames, officials said Monday. MBTA Deputy General Manager Jeff Gonneville said tests conducted on the cars, manufactured by Chinese firm CRRC, determined that as the vehicle mileage increases, it takes more and more force to turn their truck frames. Investigators are zeroing in on components known as side bearer pads, which regulate rotational force on the truck as it moves.

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