the howling means the motors are dying thats all
Not really.For the NTT's(R-142 thru R-160) when the train sounds like its howling means somewhere in that consist the motor is dead and you would notice if the propulsion is low or appears to be dead.
And Westinghouse original motor sets have a good howling many have been changed to quieter motors.
@Pacific: I'm not sure if you're using my R-68 sounds but if you are I would gladly like to get another or more recordings for you.
I can and wil get a regular R-68 recording and one with howling motors.I was thinking I can record from Coney to about 36th or Atlantic then I'll record Bridge recordings and cut it once I get to Grand St.I won't mind getting another underground recording also.Just let me know b\c I know where to go and when to do things.If you would like a regular recording on Brighton I won't mind just let me know I got a lot already.