@Dave Olson posted:The boiler couldn't be round all the way under like in the photos posted above. There are simply too many features to fit in this engine for all of that. The main PCB is large, there's a dual smoke unit for the stack and whistle, a motor w/ encoder, a die-cast backdrivable gearbox, and more. Not to mention, 90 is a small engine despite being a 2-10-0.
Can you squeeze a swinging bell in?