Yoke Technology – Previous Attempts

There have been many previous attempts to utilize the “yoke” mechanism for piston engines. Most attempts have been met with limited success or no success at all. And all have failed to produce widespread application or develop worldwide interest. Russell Bourke’s pioneering effort to incorporate the “scotch yoke” mechanism into the engine designs of the 1940’s & 1950s has been the most successful attempt to date. Bourke deserves much credit for Fisher’s “yoke-arm” technology because the Fisher design was, in fact, inspired by Bourke’s work and his promotion of the yoke concept for piston engines.

Bourke’s R&D efforts provided Fisher a “bridge” to a superior design, which now includes additional features unknown to Bourke, and has significantly advanced engine performance beyond even what Fisher or Bourke was expecting. Many will recognize Russell Bourke, and also Collins Motor Corporation’s (CMC Power Systems), Roger Richard and others, all Bourke’s modern day protégés, as determined pioneers who made significant contributions toward the advancement of piston engines. The eventual widespread success of the Fisher yoke-arm for piston engines and air compressors will promote increased recognition and appreciation for Bourke and others in their determined pioneering efforts.

It will soon be obvious to many engine manufacturers and engine advocates that Russell Bourke and others understood the importance of continuing the evolution of technology within the Engine Industry, although Bourke could not quite bring about the final aspects of the needed breakthrough. Fisher has finally completed the equation for a superior piston engine design by discovering a new crankshaft linkage called the yoke-arm.

More about this new technology.


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