"M" Boiler

[1hand]

I ordered plans from Tiny Power today for a boiler for my future engine builds.

Blueprints for a horizontal water-tube boiler designed in the 1940s or 50s by Charles Arnold to accompany the "M" engine. With a working pressure up to 150 PSI, it is 21" wide, 26" long and 24" high. Drawings include superheater and feed heater coils, and the boiler can be built either with or without these.

The boiler provides 30 sq. ft. of heating surface, not including the superheater or feed heater. All-welded steel construction.

Matt

 

[1hand]

This is the basic design, but there is 12 total up flow elements, 6 on each side

Matt

 

[Dave Sohlstrom]

Looks like your down comers and mud drums are on the small size when you add the rest of the tubes.

 

[1hand]

Looks like your down comers and mud drums are on the small size when you add the rest of the tubes.

I don't know, plans show 1/2" up flow elements, 1" down comers, and 1 1/2" mud drums.

 

[Dave Sohlstrom]

OK Will each of those right angle joints have a clean out plug.

Also looks like doing water side cleaning of the up flow tubes is going to be interesting.

 

[1hand]

I'm looking at doing the down comers in a upside down V shape to eliminate all the right angles. They will go directly from main drum to the mud tubes. The original plans just show clean outs on the end of the mud tubes