I would like to get straight on the alternator models used on GE locomotives in the Dash-7 period. Greg McDonnell's "Field Guide to modern Diesel Locomotives' (Kalmbach) says that the GTA-11 was used on:
---B23-7
---C30-7 (including Conrail's C30-7A) and that the GTA-24 was used on:
---B30-7
---B30-7A
---B36-7
---C36-7
and also that the GTA-24 was used on all "Super-7" rebuilds. I am not altogether confident of McDonnell's accuracy, however.
My suspicion is that the GTA-24 was introduced in conjunction with the new,"Sentry," wheelslip control, in which case at least early B30-7 would NOT have had it (but would have had the GTA-11).
Any information?
---B23-7
---C30-7 (including Conrail's C30-7A) and that the GTA-24 was used on:
---B30-7
---B30-7A
---B36-7
---C36-7
and also that the GTA-24 was used on all "Super-7" rebuilds. I am not altogether confident of McDonnell's accuracy, however.
My suspicion is that the GTA-24 was introduced in conjunction with the new,"Sentry," wheelslip control, in which case at least early B30-7 would NOT have had it (but would have had the GTA-11).
Any information?