February 2003 Issue

Letters: 02/03

Crank Comments
The crankshaft problems experienced, first by Continental and more recently and severely by Lycoming, are a symptom of an aging and stagnant industry.

These folks, set in their ways as they are, would not consider changing. The sad fact is that the solution is well known and already in use by those building highly stressed, high reliability piston engines. The real solution to obtaining consistently high quality crankshafts in small quantities is to use billet cranks.

This is a process whereby a solid piece of rolled or forged bar stock is machined into the finished shape of the crank by a CNC machine designed specifically for that purpose. This process h...

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