Posted for "John W. Cox" <johnwcox@pacificnw.com>:

 Adam - good luck with the query.  As a regular on the RV-10 site I have
 seen little definitive statistics to support the RV-10s as fast as you
 represent.  They have to be stripped down with little or no sound
 attenuation to keep the 1619 empty weight.  A close friend who responded
 by building his closer to ES standards came in at 1683 empty weight and
 is not seeing the speeds advertised.  Fast, but not Lancair fast. It
 wouldn't be a fair fight comparing to a Cessna 182 and the RV-10.
 
 The two planes are not in the same class.  In the next year or two
 several RV-10s will be finished which get closer in quality.  Ed Hayden
 with the Lancair boys overhead air plenum and Vic Syracuse (now
 flying)are two that are going to be running identical Performance built
 IO-540D4A5s with Hollywood Horsepower at 310.  Many have a fear of
 running LOP anything close to an IO-550.
 
 The RV has more frontal drag and much slower fairings.  It has a niche
 and a zealous loyal following. When I suggested running more than the
 260 horsepower limit, VANS published an article that flutter would ensue
 and the aircraft could fall out of the sky. This comparison should be
 fun.
 
 John Cox