Nordwick made a four cylinder radial engine with cam instead of crankshaft. It was tested but never went into production.

-The cam was double, that is, forming an eight. It gave 200 HP at 1,500 rpm.

From Appendix 9: The cam mechanism instead of the crankshaft was also applied to another engine of this brand, but with eight cylinders.

“8-cylinder radial, schematic drawing”