Mik, thanks for the links.
I got a laugh out of your pics of the 2-2-0 engine that you posted because you photo'd it on top of your Washing machine. Not because of the quality of your model, which is excellent, but I think you posted another photo of one of your models to me a few years back...also on top of the same washer. The knobs look familiar. Or maybe that was someone else. I too have posted photos of one of my models on top of the washing machine. The other photo surface I often employ is the kitchen counter in spite of the fact that I have a, well-lit, very large, flat workbench in my shop. Something about the washer or kitchen counter for model photos that many of us gravitate to.
That observation aside, I really dig your "baby climax" engine. The more I read about these engines the more it makes me want to build one. They built lots of these simplistic engines in a wide variety of track gauges and none of the "big model manufacturers" make a model of this engine to my knowledge. They all were different to suit the needs of each railroad or logging or mining operation so anything you can dream up, somebody may have built. I've read about track gauges from 2 foot to beyond standard gauge, to run on rails or poles, etc. I think it's a really cool modelling project because of that individual/one of a kind quality, and anyone who completes one will have a really unique model running on their layouts.