Truck centers are the dimension from center to center of truck bolster, not the jacking pads.
This data is for units as delivered from the manufacturers.
Always refer to pictures of the unit to be modeled as many trucks are interchangeable.
The trucks were sometimes swapped by the Railroads or rebuilders.LIMA-HAMILTON LOCOMOTIVE WORKS
TRK CTRS TYPE "B" WHB MODEL 51-06 GSC "C" 13'-00" 2500HP 31-00 AAR "B" 9'-04" LIMA 1200HP 24-06 AAR "B" 9'-04" LIMA 750 HP,1000 HP 22-03 AAR "B" 9'-04" LIMA 800 HP Notes for L-H trucks:
AAR type "B" trucks used on road units have a whb of 9'-04" with GE traction motors and 9'-10" with Westinghouse traction motors.
GCS "C" without drop equalizers whb was 13'-00".More L-H Information © S.A. McCall