....thank you for the help (I printed it out to save)...
but one question....why do they want the engine
leaned out to the enth degree ? Are they wanting to
wring out the last rev ?
I was with the understanding that these engines, as
well as the "Hanno's" were tuned for lower RPM's, and
bigger props for "pattern". And they were long stroke
motors, with less RPM's than the old FSR's.

What exactly is the advantage of these "pumpers",
and what are they designed to do....over and above
the standard "RF" motors. Aside from the advantage
of a CG mounted tank, and the non-tendancy to lean
out going verticle ?

Dave.