Thursday, June 23, 2022

Homemade Yamaha four

Motorcycle Repair Manual, Petersen Pub. 1968

 Pardon the page break in the picture. The rider of this machine, described only as a young Japanese motorcycle mechanic, built his own inline 2 stroke four out of two Yamaha twins. Long before Allen Millyard. Chain alignment is not mentioned.



1 comment:

rats said...

Was just reading an old CB article about a 4-cyl, 500cc Ariel Arrow that some nutty speed demon built in his garage. Aligning the front sprocket with the hindmost spkt required a 4"-plus shaft extension! The builder added an outrigger bearing, so that was all right then.

This fella's Yamaha is prettier; plus I bet the front brake is sufficient to his needs, which the Ariel's, infamously, could never be.