Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Nothing special, just a 5 and a 70 purchased as donors.
Still it surprised me to find them, and even more so that i´d completely forgotten i had them.

Guess that what real life can do to you, if you spend way too much time at work 

...and to keep on track.
Just checked here, and none of my matching engines has that flywheel either.