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

Hi Maurice,

I have tried to maximize the amount of pipes with the available materials, the heating surface and flue gas area is very large if I compare it with other boilers, in this case the chimney will be the bottleneck.

That is more or less what I found, the burner worked and smelled less with the top of the boiler and chimney removed.  It worked better still with the chimney back in place with a blower fitted, it needed very little steam to make the boiler and burner work really well.

Take care Tony.