A thought occurred to me about the 1980s Southern electrification scheme (specifically, the Hastings line, the East Grinstead line and the Solent area electrification, which was 1990, not 1980s, but is very much of the same era).
Namely, where did the stock come from? In all three cases, existing Southern electric stock was used: CEPs for Hastings; CIGs, VEPs and peak-time EPBs for the East Grinstead; and CIGs and VEPs for Solent. Off-peak there wouldn't be a problem, as they could just utilise units which would otherwise be sitting in the sidings all day, but what about the peak?
Perhaps Thameslink would have freed up some stock for East Grinstead, as some CIG workings to London Bridge would have become through 319s to Bedford - but what of the short period between Oct 1987 and May 1988 when there was no Thameslink and there was still a full contingent of CIG-based peak services out of London Bridge?
Perhaps Thameslink also could have sourced the units for Solent, as some 'redundant' CIGs, no longer needed for the Central Division, could have headed west onto the South Western?
Or was it just general cuts to other services, e.g. shortening some peak services from 12 to 8?
Namely, where did the stock come from? In all three cases, existing Southern electric stock was used: CEPs for Hastings; CIGs, VEPs and peak-time EPBs for the East Grinstead; and CIGs and VEPs for Solent. Off-peak there wouldn't be a problem, as they could just utilise units which would otherwise be sitting in the sidings all day, but what about the peak?
Perhaps Thameslink would have freed up some stock for East Grinstead, as some CIG workings to London Bridge would have become through 319s to Bedford - but what of the short period between Oct 1987 and May 1988 when there was no Thameslink and there was still a full contingent of CIG-based peak services out of London Bridge?
Perhaps Thameslink also could have sourced the units for Solent, as some 'redundant' CIGs, no longer needed for the Central Division, could have headed west onto the South Western?
Or was it just general cuts to other services, e.g. shortening some peak services from 12 to 8?