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Paul Kraus

CNC programmer/machinist

operation 1 on the horizontal . The fire deck and mounting holes

milling fire deck

Operation 2 on the vertical . valve train and valve seats

aggressive 6 pitch thread for the valve nuts

Operation 3 on the horizontal. All the peripheral work

Operation 4 on the horizontal. Compound angle setup for 1 feature

Operation 5 on the horizontal. bore the cylinders 4.625 diameter 13 inches deep

Boring day

Replacement cylinder head for an early 1900's Simplex Automobile. there are no longer any prints or models in existence for this head.an existing head was used to build fixturing and reverse engineer . the first part took 240 hours from start to finish with each additional head taking approximately12-14 hours each . This head has 2 cylinders and the automobile will have 2 to 3 heads mounted on the crank case 

Simplex Automobile Company Cylinder Head

Paul Kraus

Simplex Automobile Company Cylinder Head

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Simplex Automobile Company Cylinder Head