9-cylinder wood radial engine model.
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Previously:
https://www.homemadetools.net/forum/...267#post126686
https://www.homemadetools.net/forum/...006#post129749
https://www.homemadetools.net/forum/...387#post150781
https://www.homemadetools.net/forum/...529#post142982
https://www.homemadetools.net/forum/...772#post133168
