On Fri, 15 Jul 2005 11:27:54 -0700, Michael wrote:

The extra vibration occurs only if you don't have proper fuel
distribution LOP
[snip]

Of course all the piston airliners routinely ran LOP - but it's
important to remember that over the course of its life, the cost of
fuel the engine burns is significantly higher than the cost of the
overhaul - and thus LOP operation, which can easily save 10-15% for the
same power and speed, can be economically advantageous even if it does
measurably shorten engine life.

Michael

This seems like one of the most straight forward and reasonable statements
you've made thus far. That's a good point. A very good point. Have
anything which validates that's the real reason they ran LOP?