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

The Regular Stuff: Chat, Buy, Sell, Off Topic, etc. => General Discussion - Model & Toy Steam Engines – Stirling Cycle – Flame Lickers – Small Antique Originals => Topic started by: parallelmotion on August 30, 2026, 04:52:34 pm

Title: Re: Not a Jensen; not even a steam engine
Post by: parallelmotion on August 30, 2026, 05:37:44 pm

I soldered one back together for a friend who didn't know the water jacket on this one is filled through the chimney.

Title: Re: Not a Jensen; not even a steam engine
Post by: Stoker on August 30, 2026, 05:33:02 pm

Ouch .... sounds like you may have knowledge of just that deplorable situation?!?!

Title: Re: Not a Jensen; not even a steam engine
Post by: parallelmotion on August 30, 2026, 05:27:51 pm

Thanks. KM soft soldered all their steam and hot air engines, so running one without water leads to catastrophic meltdown.

Title: Re: Not a Jensen; not even a steam engine
Post by: Stoker on August 30, 2026, 05:25:21 pm

That is a truly great little Stirling!

Very interesting that they configured it as a Mock Steam Engine, but it certainly runs great and I do suppose the cooling water in the "boiler" does help make for longer and better runs.

NICE!!!

Title: Not a Jensen; not even a steam engine
Post by: parallelmotion on August 30, 2026, 04:52:34 pm

Krauss Mohr & Co. made this unique toy for Doll & Co. and perhaps others (Bing?) around 1911. While it appears to be a steam engine at first glance, it's actually a vertical hot air engine. The "boiler" is a water tank to cool the upper part of the engine.

https://youtu.be/g3_0HrCeYXI?si=_8Yrpz7HYiJWMWO7