GP40Second Run60 road numbers
New railroads, second-owner patch jobs, factory weathering and working Gyralights. And for the first time, Tru-Fans™ comes standard on your choice of decoder.
- Tru-Fans™ on ESU LokSound 5 & SoundTraxx Tsunami 2
- Gear-driven fans, not PWM
- Tru-Beam™ projection headlights
- 60 road numbers
Two decoders. One Tru-Fans™ system.
The first run shipped with SoundTraxx Tsunami 2 only. For the Second Run, every road number is offered with either sound decoder, and we're the first manufacturer to put a working fan system in both.
SoundTraxx Tsunami 2
- Onboard SoundTraxx™ Tsunami 2™ DCC sound decoder
- CurrentKeeper
- Microprocessor-controlled Tru-Fans™
- Tru-Beam™ headlights and road-specific lighting
ESU LokSound 5
- Onboard ESU™ LokSound 5 DCC sound decoder
- PowerPack
- Microprocessor-controlled Tru-Fans™
- Tru-Beam™ headlights and road-specific lighting
Gear driven. Not pulse width modulated.
Fans driven by pulse width modulation get chopped power, so the blades stutter and jitter at low speed. Ours are driven by a precision geared motor, so the blades spin up, run and coast down smoothly, the way a real radiator fan does.
- Quiet by design. We tuned the fan drive so you won't hear it over the prime mover.
- Very low RPM. The precision geared motor can turn a fan slowly enough to idle, coast and drift like the real thing.
When one fan runs, the next one drifts
On a real locomotive, the radiator fans don't always run at once. When the number one fan kicks on, and the intake shutters are closed, it pulls air in through the idle fans. This causes fans that are not energized to drift. It takes a very slow, steady RPM to show that on a model, and our precision geared motor gets there without the stutter of PWM.
Prototype footage. Tru-Fans™ reproduces this behavior on the model.
Lighting you can see
Tru-Beam™ projection headlights and working red and white Gyralights, side by side.
Tru-Beam™ projection headlights
Our lensed headlights throw a real beam down the track instead of the faint glow found on many models. Bright, focused and set to the same warm color across the fleet.
Working Gyralights, red and white
Select units carry a working Gyralight in both white and red. Switch it to red to simulate the emergency function, as the prototypes did on the Burlington Route and the Seaboard Coast Line.
- White for normal operation
- Red to simulate the emergency function
Bought, patched and put back to work
When a GP40 changed hands, the new owner often did the minimum: a fresh number, a patch over the old reporting marks, and back out on the road. We modeled those patch jobs, and these units arrive weathered right from the factory.
MKT 237
Still in Conrail blue, patched and renumbered for the Katy.
D&RGW 3170
Conrail blue, patched and renumbered for the Rio Grande.
CSXT 6513
Chessie System paint, renumbered and sublettered CSXT.
The Class One Model Works Semiquincentennial
Two units wearing our own road name, painted red, white and blue to mark America's 250th: the 1776 and the 2026. Both are our own design, and they're built to the same standard as every other road number in the Second Run.
Offering you more road names than ever
New roads join the GP40 lineup, from Burlington and Seaboard Coast Line to Louisville & Nashville and the Katy. Tap any render to see it larger.
Built by modelers
- Tru-Fans™ on ESU LokSound 5 and SoundTraxx Tsunami 2, the only HO GP40 with prototypically operating fans
- Gear-driven fans, smooth and quiet beneath the prime mover, slow enough to drift
- Tru-Beam™ lensed projection headlights
- Gyralights with red emergency function on select units
- Factory weathering on select second-owner units
- Open hood doors with interior detail on select models
- Prototype-accurate detail from nose to cab, modeled from field drawings and photos
- Road-specific paint and lettering on every road number
- CNC-machined wheelsets for smooth running
- Separately applied detail parts throughout
From modelers who own one
“First time customer. Placed my order and it was packed up and shipped the same day. All items are very high quality and arrived without damage. I'd purchase from these guys again!”
Robert J.“Excellent prototype models! They look exactly like the photographs of the real cars! Very nice details and the paint schemes are very crisp. You can even read the small print.”
Tim H.“I pre-ordered and it arrived as promised. The model is excellent in every way. The detail is beautiful — everything you'd expect from a prototype-accurate model.”
Dan C.“All of my purchases from Class One Model Works have been excellent. I consider them to be a first-class company. The quality is second to none.”
Lyle C.Limited run. No re-runs.
Pre-order your GP40 today. Once the Second Run sells through, it's gone.