The Boll Aero 18

As a practice before making the 4 cylinder, 4 stroke engine for the mini caterham, I have decided to make some simpler engines.

The first engine I have chosen to make the Boll Aero 18. It’s a 1.8cc diesel engine with a 1/2 bore and 0.550″ stroke. I intend to make this as a practice for making cylinder liners, pistons and shafts and achieving the correct fits / tolerance.

If you would also like to make this engine the drawings are available here:

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