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Beautiful job and sounds great!

Hi Ian, Yes both shafts are the same. Do you have the cam gear timing info? If not, it is available on the Howell V4 web site. Regards, Bob

The cam pairs are mounted so the exhaust lobes are facing the ends of the shaft. Hope this helps! Regards, Bob

Meant to write 1 and 3, 2 and 4 Sorry Bob

The 3 and 4 cams are supposed to be reversed on the shafts from what the 1 and 2 are. Regards, Bob

Thanks! I will give that a try.

Hello, does anyone have info (specs/plans) for building Elf Model Airplane Engines? Thanks, Bob

Thanks, I will check that out. I have castings for Prewar Single, Prewar Twin and Postwar Single

Hello! I am a newbie to your group and I am wondering if any of you might have specs (bore size, stroke, etc.2) For Elf Model plane engines. I have been given some castings but no drawings. Thanks!