2019.12.15 Rust Pic

kcm.MN

Well-known Member
Location
NW Minnesota
Frick Portable Steam Engine

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Very nice return flue engine.
Huber made a lot of them.
I don't know how many Frick made.
Return flue engines need a lot less stays than the engines with the locomotive style fireboxes.
Richard in NW SC
 
"return flue" means the fire gasses pass from the rear mounted fire box forward thru the boiler and then reverse direction, pass thru the boiler a second time, then exhaust out smokestack at the rear.
Stay bolts are rods that are threaded on both ends (and can be peened over on one to form a rivet). They are the internal braces that hold the boiler in shape under pressure.

fewer stays = lower operating pressure---theoretically.....
 

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