Requirements for the Rotary Beam Engine

Bill of Materials Fasteners
Location Qty. Finished Size Matl. Location Size Lgth Type Qty
Base 1 2" x 3" x .750" Alum. Cyl. To Base 1-72 1/4" SHCS 4
Bearing Pedestal 1 1.5" x 2.063" x .750" Alum. Beam Stand 3-48 3/8" SHCS 2
Flywheel 1 2" Dia. x 1" Brass Base/Pedestal 5-40 3/8" SHCS 4
Cylinder 1 .750" Dia. x 1.5" Alum. Crank Disk 2-56 1/8" Set Scrw    2
Piston   1 .375" Dia. x .375" Brass Flywheel  4-40 3/16" Set Scrw    1
Beam Stand 1 .750" Dia.  x 2.5" Alum. Wrist Pin 1/16" .375" Dowel Pin 1
Beam   1 2.375" x .375" x .125" Steel Link Pins, Jam  0-80   Brass Nut 9
Crankdisk 1 1" Dia. x .469" Steel Nut        
Crankshaft 1 3/16" Dia. x 3.531" Drill Rod
Air Supply Fitting 1 .125" Dia.  x .625" Brass Tube
Crank Arm 1 3/32" Dia. x 1.657" Brass
Crank Arm Ends 2 .250" Dia. x .125" Brass
Crankpin 1 3/16" Hex x .510" Steel
Link Pin 4 1/16" Dia. x .350" Brass
Beam Pin 1 3/16" Hex x .620" Brass
Beam Nut 1 3/16" Hex x .125"  Brass
Upper Link 1 1/4" Sq. x .750" Brass
Lower Link 1 1/4" Sq. x .750" Brass  
Conn. Rod Link 1 1/4" Sq. x .500" Brass
Connecting Rod 1 1/16" Dia. x 1.294" Brass
Connecting Rod End 1 3/16" Dia. x .125"  Brass
Note: Sizes shown are for finished dimensions. Add additional 
stock to allow for chucking, sawing, squaring, etc.

 

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