1920 Megola motorcycle with 5-cylinder rotary engine mounted to the hub of the front wheel.
https://diqn32j8nouaz.cloudfront.net...e_fullsize.jpg
Previously:
https://www.homemadetools.net/forum/...149#post138296
https://www.homemadetools.net/forum/...613#post182358
https://www.homemadetools.net/forum/...137#post172427
https://www.homemadetools.net/forum/...648#post170539
https://www.homemadetools.net/forum/...094#post168607
https://www.homemadetools.net/forum/...669#post163128
