How about CSX slugs?
Chris, you need to wash your mouth out.
Different railroads use different terminology.
CSX calls these Roadmates. (the ancestor of this idea come from Seaboard Coast Line who bought from GE specially created new locos called MATEs designed to run and be paired with U36Bs. What made them different from typical "slugs" is that they could provide fuel for the mother and they were geared and intended to be used on the road. MATEs were geared for running at 75mph whereas most slugs are used more for switching in yards or short-range local service.)
Here are the CSX units listed.
http://www.trainweb.org/csxphotos/model_RDMT.htmCSX send a bunch of GP30s and GP35s to be worked on. If I remember correctly, most of the work was done by VMV. A few units had their origin on roads besides SBD System and Chessie. Some of them came from GM&O/ICG. The link above tells the origin of each loco.
The prime movers were removed, as were radiators and radiator fans.
They retained traction motors, fuel tanks, dynamic brakes AND the control stands.
These were originally paired with working/updated GP40-2s. And like the SCL MATEs before them, these were all designed for high speed long distance road service.
And as stated above, the mother loco could draw fuel from the Roadmate. And since the Roadmate had a control stand, the set could be operated in any direction. As in this photo:
http://www.trainweb.org/csxphotos/photos/RDMT/2371CSX-yn3.jpgThe first order was for 30. And they proved so successful that CSX ordered a LOT more.
CSX has put these pairs to extensive use and some are still in operation many years after the rebuilding/modification effort. Only the the first pair appeared in the old Blue and gray scheme. The rest of the early units all wore stealth gray- which would date them about 1988. The latter units arrived in Bright Future dating them to about 1990.
Units 220 - 2330 were all GP30s and GP35s.
The program was so successful that CSX kept going. Numbers 2331- 2387 contain a lot of pre-DASH 2 GP40s and GP38s and even a few GP38-2s and GP40-2s (judging from the dyn brake blisters).
Hope this info helps a little.
