Key Model Imports

New Project

SP AC-4,5,6

CAB FORWARD

AC-4 #4100:The first of the large cab forwards will have a stamped steel pilot, enclosed train number boards, no drifting valves, an outside dry pipe, number plate below the headlight, and no water can on the front of the cab.

AC-4 #4107:This AC-4 will have a boiler tube pilot, original open train number boards, no drifting valves, no outside dry pipe, number plate below the headlight, and a water can on the front of the cab.

AC-5 #4116:This AC-5 will have a boiler tube pilot, enclosed train number boards, no drifting valves, an outside dry pipe, number plate below the headlight, and a water can on the front of the cab.

AC-5 #4122:This AC-5 will have a stamped steel pilot, original open train number boards, drifting valves, no outside dry pipe, number plate below the headlight, and no water can on the front of the cab.

AC-6 #4133:This AC-6 will have a snow plow pilot, original open train number boards, drifting valves, no outside dry pipe, number plate above the headlight, and no water can on the front of the cab.

AC-6 #4141:This AC-6 will have a stamped steel pilot, enclosed train number boards, no drifting valves, no outside dry pipe, number plate above the headlight, and no water can on the front of the cab.

All versions will be painted for the late 1940's to early 1950's with large SOUTHERN PACIFIC on the tender and a silver area under the front of the cab.

Production depends on reservations

Fully Hollow Bored Driver Axles - The prototype bored holes all the way from one end of the driver axles to the other to lighten the axles. Hollow axles are also stronger then solid axles. Instead of the usual simulation of hollow driver axles by just drilling into the ends of the axle slightly, the Cab Forward axles will have a hole all the way through. you will be able to look clear through the axle, just like on the prototype.
Scale Wheel Profiles - All the wheels will have exact scale wheel profiles. They will be gauged to work perfectly on NMRA Standard O Scale track, but will look exactly like the real thing. While no Proto 48 versions will be produced, the exact wheels will greatly simply Proto 48 conversion for those wishing to do so.
Double Drawbar - These engines will have an exact scale double drawbar between the engine and tender. This is a huge visual improvement that help fill the void between the engine and tender usually seen on models.
Engine to Tender Hoses - These models will come equipped with a full complement of engine-to-tender water and air hoses. This will provide the best appearance ever done on the engine-to-tender space, completely filling it as on the prototype.
Fully Operational on Both DC and DCC - There will be two complete and ready to run electronic systems on the Big Boys. They will run on straight DC for those not yet into DCC, but they will also run with no compromise on DCC complete with Tsunami sound from SoundTraxx. The two systems are completely separate and these is no compromise in performance in either system. No parts have to be added or adjusted. The DC system is optimized for straight DC, the DCC and sound system is optimized for DCC right down to the adjustments on the CVs. This will be ideal for the modeler who may be considering DCC but is not sure about converting yet.
Ball Bearings - All Axles, the drive train, and motor will have ball bearings for smooth operation.
Details - All visible detailing will be included and will be accurate to the years being modeled. The buyer will be able to specify exactly which engine number he wants. All lighting will be operational and Kadee Couplers will come installed for immediate operation.
Dual Pittman Motors located in the Firebox.
Operation Smoke Deflectors
Smoke Box Front opening with details
All Hatches will open with appropriate interior details

Big Boy is the popular name of the American Locomotive Company 4000-class 4-8-8-4 articulated, coal-fired, steam locomotives manufactured between 1941 and 1944 and operated by the Union Pacific Railroad until 1959.

The Big Boy fleet of twenty five locomotives were used primarily in the Wyoming Division to haul freight between Green River, Wyoming and Ogden, Utah.

According to Union Pacific senior manager of Heritage Operations Ed Dickens Jr., the 4-8-8-4 series originally was to have been called "Wasatch". One day while one of the engines was being built an unknown worker scrawled "Big Boy" in chalk on its front. With that, the legendary name was born, and has stuck ever since.