Bulletin: GM Dual Motor Doodlebug

Manufacturer: ESU, Item number: S0805, Version: V1-R1

Recorded from: Madeline WGN St. Louis Car Company Doodlebug

Doodlebug is a nickname in the United States for a type of self-propelled railcar most commonly configured to carry both passengers and freight, often dedicated baggage, mail or express, as in a combine. The name is said to have derived from the perceived insect-like appearance of the units, as well as the slow speeds at which they would doddle or "doodle" down the tracks. Early models were usually powered by a gasoline engine, with either a mechanical drive train or a generator providing electricity to traction motors ("gas-electrics"). In later years, it was common for doodlebugs to be repowered with a diesel engine.

Doodlebugs sometimes pulled an unpowered trailer car, but were more often used singly. They were popular with some railroads during the first part of the 20th century to provide passenger and mail service on lightly used branch lines at less expense than with a train consisting of a locomotive and coaches with larger crew. Several railroads, mostly small regional and local networks, provided their main passenger services through doodlebugs in a cost-cutting effort.

This project is a normal idle version. It has single exhaust stacks per motor.

File also contains an "Isolation Switch" Mode on F15 when Standing Still.
Pressing F15 while not moving will lower the prime mover and lock the motor. F15 must be turned off to begin moving.

"Reverser In Center Position". When pressing F24 while stopped, the motor will lock so you can throttle through the notches like the prototype in neutral. F24 must be turned off to begin moving.

Horns:
Forward:
1st Generation Switcher Horn Pack 1
Horns (SoundCV9):
CV163=0 Handcock 4700 Whistle (Temp No Loop)
CV163=1 Leslie A-125
CV163=2 Leslie A-200
CV163=3 Leslie S-25 (Temp Leslie S-2M)
CV163=4 Leslie S-2M
CV163=5 Leslie S-3K
CV163=6 Leslie S-3L
CV163=7 Nathan M-3
CV163=8 Nathan M-5
CV163=9 Nathan P-2 (Temp Nathan P-3-OC)
CV163=10 Nathan P-3-OC
CV163=11 Nathan P-5-OC
CV163=12 Wabco A2
CV163=13 Wabco AA-2 (Temp Wabco A2)
CV163=14 Wabco E-2


Reverse Leslie S-25

Bell:

EMD 8004156 Bronze Bell 044

Brake Squeal:

Composition Shoe

KeyFunctionsSound slotsVolume CVsVolume values
F0Headlights Front/Rear
F1Bell428370
F2Horn3, 6275, 299128, 150
F3Coupler529190
F4Prime Mover 2, Master Light Switch226750
F5Gyra Lights (Directional) Aux5 Front/Aux6 Rear
F6Aux1 Front Ditchlights
F7Flange Squeal2343560
F8Prime Mover, Starting Delay1, 8, 19, 26259, 315, 403, 45990, 128, 85, 0
F9Drive Hold
F10Automatic Brake1033160
F11Automatic Brake Emergency932360
F12Dimmer
F13Aux2 Rear Ditchlights
F14Hand Brake1436350
F15Isolation Switch2141965
F16Soundfader
F17Brake Set/Release Automatic2948360
F18Sanding Valve1335525
F19Reverser Center2041185
F20Compressor730770
F21open/close passenger door17387110
F22Cargo compartment sliding door18395110

Make sure that index CV31 is set to 16 and index CV32 is set to 1 before changing a volume CV.