Tag Archives: rotary valve

Design and construction of The Highwayman F37 road racing chassis, Part II

This is Part II of the F37 story that covers the design and fabrication of the thin wall chromoly road racing chassis. Construction of the engine and some racing footage aboard the finished bike can be found here in Part I.

The Highwayman F37 a custom, purpose-built vintage road racer, Part I

This story highlights the creation of a road race engine from the fusion of two different enduro motors, as well as the design and fabrication of a custom racing chassis to house the “franken-motor.”

Broad band power for the Kawasaki A7 350 rotary valve twin

The Kawasaki A7 Avenger 350 cc rotary valve 2-stroke twin is a fun little bike.

I was surprised to find how quick these things are, and do hear they were very progressive for their time!