Hello Ed (New Haven) ---
I have provided two You Tube Videos of the BU Museum Gate Cars in operation:
One is a VIDEO LINK to that trip in 2006. Its a full length (long) video. It ran from the Linden Yards in Brooklyn to the ex-LIRR now IND Rockaway Line via the remaining short portion of the BMT Fulton St EL connection in Queens.
Here is the Video LINK URL:
https://www.youtube.com/watch?v=y0pxeQGgfz4
Here is a shorter second video of the same train riding on the BMT Astoria EL in Queens - probably some earlier year, as filmed from one of the open platforms between two EL Gate cars.
Here is the Video LINK URL:
https://www.youtube.com/watch?v=eQNRRi__Ct8
I'm sure you will enjoy both of these videos. Videos of those Gate cars running are rare to find.
I am sure you are aware of, but for other readers not so, these 3 EL Gate cars were ORIGINALLY built new back around 1901-04 as BMT Open end EL gate cars, and converted to enclosed ends MUDC class "Q" Type cars in 1938 for the 1939-40 NY Worlds Fair "BMT" shuttle services - running back and forth on the then owned and operated IRT Flushing & Astoria EL's from Queens Plaza Jct Station to either Flushing or Astoria line terminals.
In May 1950, they were all modified with IRT ex-Composite Car Motor Trucks that were installed on the A and C cab-control cars only, the B trailer cars retaining their original BMT Peckham trailer trucks, for Manhattan-Bronx IRT 3rd Ave EL various services until 12-15-1956. Returned to the BMT for Myrtle Ave. EL service from May 1958 thru October 1959. And 99% of that Q-Car fleet was scrapped by 1971.
Three Q-Type cars - seen in these videos - were "re-converted" in Coney Island BMT Shops in 1974-75 back to full gate cars, albeit still retaining the "lowered" clerestory roof done between 1960 and 1963 to ALL the Q-Types for Dekalb Avenue subway tunnel clearances to get them thru and to Coney Island Yards for major shop repair work.
Here are some photos of my O-Scale BU Gate Car models, scratchbuilt, of 3 types of BMT EL Gate cars as they appeared in original BRT (Brooklyn Rapid Transit) livery colors back in 1901-4
My 3 "BRT" era Gate cars are a 1200 Series Motor, an 800 Series Center Door Motor, and a 100 series trailer.
regards - Joe F
