Fire Eater Engine

River Queen Engine: A nicely designed marine type model engine from the 1950s.:
http://www.plans-for-everything.com/hen_steam_engine_plans.html
http://www.plans-for-everything.com/downloads/steam_engines/SE%20RiverQueen.pdf

River Queen Steam Engine

River Queen Plans

A very visual rotary engine - showcase material!
Original article and plans: http://www.john-tom.com/ElmersEngines/46_rotary.pdf

Comber Rotary Engine

Elmer's rotary #46

Base

Ring Cam

Small Bearing

Large Bearing

Cylinder Shaft

Piston

Piston Rod

Fork

Roller

Bolt 5-40 x 3/8

Cylinder Head

Head Bolt 2-56 x 3/8

Flywheel

Pneumatic / steam engine.  Drawings were derived from a pdf.

6 Cylinder Radial Engine

Crank Case

Cylinder

Crankcase Cover

Crankshaft Counterweight

Valve Crank

Crankshaft Pin

Crankshaft

Connecting Rod Hub

Connecting Rod

Valve

Valve Housing

2349K213

91292A816

91292A135

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A roundup of models that we think you'll like

Bocam

Fire Eater Engine

River Queen Steam Engine

Comber Rotary Engine

6 Cylinder Radial Engine