Live Steam Locomotives

7 1/4 and 7 1/2 inch gauge live steam model locomotives

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Steam Engine Overview
Railroad Drawings (all)
Union Pacific Drawings
Union Pacific Big Boy
Union Pacific Challenger
Union Pacific Northern
USRA Heavy Pacific
2-8-0 Consolidation
USRA Switch Engine
Challenger Castings
Castings For Your Project
Contact Us

Challenger built by Bruno Platzer
Front view of Challenger
Photo by Dave Artinian Click to enlarge

Our live steam hobby products:

  • Union Pacific Challenger & Union Pacific Big Boy castings and machine drawings

Our Union Pacific 4-6-6-4 Challenger castings are the finest castings available in the live steam hobby. These castings and casting sets include detailed CAD generated machine drawings to assist you in the construction of your Challenger.

In addition, some of our customers are successfully using our Challenger castings and drawings to construct Union Pacific 4-8-8-4
Big Boy locomotives.

We also offer a few selected castings for the Union Pacific FEF-1, FEF-2 & FEF-3 800 Series 4-8-4 Northern.

Our Centipede Tender castings can be used to build either the 23-C 23,500 gallon tender for the Union Pacific 4-8-4 FEF-2 & FEF-3 4-8-4 Northern or for the 25-C 25,000 gallon tender for our Union Pacific 4-6-6-4 Challenger or for the Union Pacific 4-8-8-4 Big Boy.

  • Chassis-on-air models

Each of the following models, the USRA 0-6-0 Switch Engine, 2-8-0 Consolidation, and USRA 4-6-2 Heavy Pacific, is offered as a completely machined, painted/plated and assembled chassis-on-air (see individual model pages below for further definition). Although the Switch Engine, Consolidation and Pacific are not offered as "build-it-yourself" sets of rough castings and drawings, some individual castings, such as drivers, cylinders and valve gear, can be purchased separately by builders wishing to do free-lance construction on other engine types.

"Those chassis are beautiful...You have the right idea...I love the doing the finish work,
but hate the tedious machining involved in building the chassis."
- T.S., Lufkin, Texas

  • Reproduction Railroad Drawings Collection

  • Reproduction Union Pacific Railroad Drawings: We offer reproductions of original Union Pacific Railroad drawings from the live steam era for the Union Pacific FEF-3, 800 Series 4-8-4 Northern; its accompanying 14-wheel, 23,500 gallon Centipede Tender; the 3900 Series 4-6-6-4 Challenger; the 4000 Series 4-8-8-4 Big Boy; and their accompanying 14-wheel, 25,000 gallon Centipede Tenders. 

Below: A thumbnail sketch of our live steam engine models

To help you narrow down your options in finding the model that's right for you, the defining characteristics of each of our live steam engines are described below. Follow the links to learn more about your locomotive choice.

The 0-6-0 Switch Engine is an entry level locomotive - a great choice for those new to the hobby or for those who want a smaller model. Offered as a completed chassis-on-air.

Compact, brute power. Choose this model if you're looking for an easily transportable workhorse.  Offered as a completed chassis-on-air.

A powerful, versatile locomotive with sleek, stylish lines. Offered as a completed chassis-on-air.

Exclusively ours! Our signature model - the largest, most powerful, and only articulated locomotive on the market. We offer reproductions of original Union Pacific railroad drawings, castings with machine drawings, and machining and assembly services.

Feel like doing a bit of re-engineering? Use our Challenger castings to build a Big Boy, the king of locomotives. We offer reproductions of original Union Pacific railroad drawings for the Big Boy, Challenger castings with Challenger machine drawings, and limited machining and assembly services. Please see our Big Boy page for further details.

Roger Goldmann * 413 Morrison Lane. * Santa Paula, CA * 93060 * USA