Scale model Harley Panhead engine. 2:26 video:
https://www.youtube.com/watch?v=EQRzCNK9eOs
Previously:
https://www.homemadetools.net/forum/...2320#post76150
https://www.homemadetools.net/forum/...692#post102204
https://www.homemadetools.net/forum/...336#post135181
https://www.homemadetools.net/forum/...006#post129749
https://www.homemadetools.net/forum/...2277#post76084
