on Sun Apr 15 22:34:07 2012, in response to Re: Rush hour J to 9 Av, posted by J trainloco on Sun Apr 15 22:04:31 2012.
But both of you are forgetting all the extra M trainsets that were no longer needed between Essex St and Bay Parkway. Those were all sent to the former V route to replace all the 75 foot cars the V once used. Those R46's the V used to use then in turn allowed the R44's to be retired as the former V's R46's replaced the R44's. Also, the over all length of the trains are shorter along the old V route.
While, yes, they haven't been able to replace the R42's, they were also around yet before the M and V were combined.