Requirements for the Simplex Engine
| Bill of Materials | Fasteners | ||||||||
| Location | Qty. | Finished Size | Matl. | Location | Size | Lgth | Type | Qty | |
| Base | 1 | 1.375" x 1.375" x .375" | Alum. | Cyl. To Frame | 1-72 | 3/8" | SHCS | 4 | |
| Frame | 1 | 2" x 1" x .375" | Alum. | Air Line Supt. | 1-72 | .150" | SHCS | 1 | |
| Flywheel | 1 | 1.25" Dia. x .325" | Brass | Bracket | |||||
| Cylinder | 1 | 1" x .5" x .563" | Alum. | Base to Frame | 4-40 | 1/2" | SHCS | 2 | |
| Air Supply Line | 1 | 3/32" Dia. Tube x 1.75" | Brass Tube | Crank Disk | 4-40 | 3/16" | Set Scrw | 1 | |
| Bearing | 1 | .375" Dia. x .710" | Brass | Flywheel | 2-56 | 1/4" | Set Scrw | 1 | |
| Crankshaft | 1 | 3/16" Dia. x 1.400" | Drill Rod | Wrist Pin | 1/16" | .375" | Dowel Pin | 1 | |
| Crankdisk | 1 | .688" Dia. x .156" | Steel | ||||||
| Piston | 1 | .375" Dia. x .313" | Brass | ||||||
| Connecting Rod | 1 | .250" Dia. x 1.238" | Brass | ||||||
| Crankpin | 1 | .156" Hex x .385" | Steel | ||||||
| Support Bracket | 1 | .250" x .563" x 1/16" | Brass | ||||||
| Note: Sizes shown are for finished dimensions. Add additional | |||||||||
| stock to allow for chucking, sawing, squaring, etc. | |||||||||