

Southern Pacific HO Scale MTH HO 4-8-8-2 AC-6 Cab Forward Steam Engine w/Proto-Sound 3.0 (Modern Cab)
Overview
The first true Southern Pacific Cab Forwards were delivered in March of 1910 and proved so successful that the SP eventually bought 254 more in various classes. Because the firebox and tender were at opposite ends of the locomotive, the cab forwards burned oil, piped under pressure from the tender to the firebox. The cab in front gave the engineer the best forward visibility of any steam locomotive.
The AC-6 Cab Forward returns to the rails offered for the first time in HO with Proto-Sound 3.0 in die-cast metal construction and outfitted with additional details, including legible builder's plates, painted backhead gauges, cab interior light, tender truck safety chains, and additional boiler details.* While many railfans are familiar with the AC-12 Cab Forward preserved at the California State Railroad Museum - the last new steam engine delivered to the Southern Pacific in 1944 - our model depicts the earlier AC-6 with its distinctive flat cab front and rounded Vanderbilt tender. Delivered in 1930-31, the AC-6 class set the pattern for all future Cab Forwards, with higher boiler pressure, more tractive effort, and the air compressors moved to the boiler front for better weight distribution. Several AC-6s were later modernized with a tapered cab front, and that version is also offered here for the first time.
Features
Proto-Sound 3.0 equipped locomotives can be controlled in command mode with any DCC compliant command control system. While the user won't have access to all of the incredible features of Proto-Sound 3.0, independent control over the locomotive is possible. This means you can continue to use your existing DCC controller to independently control your other DCC equipped locomotives in addition to your Proto-Sound 3.0 locomotive on the same track at the same time.
When using a DCC controller, the following Proto-Sound 3.0 locomotive features are accessible:
- (F0) Headlight on/off
- (F1) Bell on/off
- (F2) Whistle/Horn on/off
- (F3) Start-up/Shut-down
- (F4) PFA initiate and advance
- (F5) Cab Light on/off
- (F6) Engine Sounds on/off
- (F7) Volume low, med, high, off
- (F8) Smoke on/off
- (F9) Forward Signal Sound
- (F10) Reverse Signal Sound
- (F11) Coupler Slack Sound
- (F12) Grade Crossing
- (F13) One-Shot Doppler on/off
- (F14) Extended Start Up
- (F15) Extended Shut Down
- (F16) Labor Chuff
- (F17) Drift Chuff
- (F18) Smoke Volume low, med, high
- (F19) Single short whistle toot
- (F20) Coupler Close
- (F21) Feature Reset
- (F22) Idle Sequence 1
- (F23) Idle Sequence 2
- (F24) Idle Sequence 3
- (F25) Idle Sequence 4
- (F26) Brakes auto/off
- (F27) Cab Chatter auto/off
- (F28) Clickety-Clack auto/off
- Proto-Sound 3.0 With The Digital Command System Featuring: Quillable Whistle w/Freight Yard Proto-Effects
- Unit Measures:16 3/4" x 1 1/2" x 2 5/16"
- Operates On 18" Radius Curves