The second locomotive that caught my interest was built from an article I saw in the Narrow Gauge Gazette. The author built it in Gn15, based on an On30 chassis of a 2-6-0 steam locomotive.
I had an old MDC/Roundhouse kit of a 0-6-0 Tank Locomotive lying around and thought it could probably fit the bill if I build the same locomotive in On30 based on the HO chassis.
I imagined that I could use an PVC pipe, cut a slot out to fit over the motor and have by this a smokebox, boiler and firebox in one piece. The cab on the "prototype" model was sitting only 6 scale inches above the rails. I fabricated a platform for the cab which I could slide over the rear part of the frame and attach it with a screw. In case of motor problems I could unscrew the cab and remove the boiler tube which was held with a screw in front of the frame.
A very interesting item to build was the saddle tank that is located over the smoke box and boiler. I cut a hole, centered on the watertank for the steam dome. The two square boxes to the front are the sandboxes.
I build the firebox around the larger part or the PVC tube. The cab assembly slides over the rear tube and is attached to the frame with a screw on the bottom. I added levers and gauges from my parts box. The firebox door mechanism was built using a photo for reference.
I also included a fuel tank in the cab. Obviously the coal burner was converted to oil for its use in the mines.
The photo above shows the painted interior and part of the chipping paint effect on the outside of the cab.
The front and rear buffer beams are balsa wood, scribed and weathered.
Unfortunately there was a big controversy about the use of commercial chassis or frames, with the result that this locomotive also did not earn a Merit Award. I insisted on a re-assessment and explained a couple of things I've done which obviously escaped to the assessors in their first evaluation. The model finally passed with 90 points and a Merit Award.
Although I put high hopes in my two builds, all the discussions around the scores nevertheless leave a bad taste. Although I'm very proud of how they turned out, I had to admit that some features were missing. But I never thought that a commercial frame had such an impact on the overall evaluation of the models.
I accepted the verdict and kept on building another model.