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

I have one but have not run it… @crazydoug has quite a few and ran them on both air and steam, maybe he can help?

I bought the all brass horizontal engine 7 or 8 years ago and made a boiler for it, my most recent video of the steam plant is here:



As you can see it runs quite well now on fairly modest pressure, usually 7-12 psi with the safety set to 20 - it is a sizeable boiler but just soft soldered ( I did pressure test it to 60 psi before use!), the governor is just for show, the rest of the bits are largely recycled brass stuff from charity shops.

Dave

Glad you enjoyed it John.  The boiler is a simple pot type, 3" x 7", brass tube with copper end caps and an internal stay.  The gas burner is a Bix 5 incher with a No7 jet, running on butane/propane mix, once steam is raised it can be turned down to almost minimum to maintain pressure, I think my smallest (2 inch) Bix burner would probably give enough heat for this setup.  Boiler capacity is sufficient for a good 45 minute run with an ample safety margin.
I have a Polish school engine too which had a full restoration by the seller to a very high standard and that is a very fine runner on both air and steam.

Dave

 Thanks Dennis!

I like that except for the exhaust. That exhaust is a definite no go.

I intend to remove valve chest and drill the exhaust bigger and thread and then screw in pipes probally 2 into 1 .
The horizontal will need the same done .

Cheers
Dennis

Thanks guys!

 If I decide to get one it will probably be a school engine. I like running generators and it won’t need to run fast with that nice big flywheel!