boilerwash wrote:
The first one may be an early "Gypsy" engine but that second one with the rain barrel water tank screams shop job. My question is how the heck did that arrangement with the stack coming straight out of the fire box work.
It's probably a 2-pass boiler. This is a pretty common arrangement for small stationary fire tube boilers used for building heating. Here's a simplified illustration of the arrangement:
In the case of the locomotive, there's a firebox instead of an oil burner as shown above.
