Ageless 9 and 18 Radial

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Still working through the cylinder head operations. I am clocking and matching heads to cylinders.
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Looking good I have almost finished my 9 cylinder which has taken 5 years on and off and hopefully I will soon be running it up. I am currently also in the process of completing a hit and miss Rina engine which had been put on the back shelf whilst working on the Hodgson but is coming on nicely.
 
Been working on the cylinder head CAM programs. What you see here is the result of four operations totaling over seven hours of machine time per cylinder head. The machine work is only 75% complete as each head will need at least 3 more operations to finish. I expect another 3 hours of machining will be needed to complete the head. I need 27 good ones for both engines. Aluminum is getting expensive..... lots of trial and error.... 😃. I understand now why people have told me that the cylinder heads are the hardest part of the build.
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With a 5-axis mill and tool changer, you'd knock those babies out quick. :D

Lacking that it's a slog. That groover is a tight fit.
 
Looking good what spark plugs did you opt for ?
 
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Making a lot of crankshaft parts for both engines. Cutting 303 stainless steel for the shafts and carbon steel for the crankshaft cheeks. Note the $23 Guering drill bit on the turret. It is impressive because it’ll drill a 3 inch deep hole (0.125) no problem in the stainless, it’s an amazing drillbit. Note to self: Buy more endmills when not running aluminum! Lol.
 
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