The Dimeter of the Armature lamination stack is 0

electrical box

and one observation car

Trainz Product Id: 12393938

and Spectrum Magnum power pack

Bachmann 82894 G Scale Little River 2-6-6-2 Steam Locomotive #10 ProductID_12494143 The Dimeter of the ArmatureThis locomotive features: DCC ready, plug and play electronics interface to accommodate the control system of your choice, including DC, NMRA DCC, and radio control battery operation, two custom wound motors with flywheels, two idler gear boxes, prototypical equalized chassis under both power assemblies, all wheel driver pickup, diecast scale knuckle couplers, front and rear, constant lighting of LED headlight, cab light, and rear light, easy access