Ok, you guys with ES's with NA IO-550's (not the turbo guys).  At 75% power,
what are your cruise numbers?  It seems there are some that think the RV-10
is only slightly slower than the ES.  Perhaps this is true, but would be
curious of the numbers....

Here are the current claims.....(quoted from another forum and not by me...
I figured I'd check here first).

As far as the Lancair $61,000 more and 310 HP engine you to can go 12 mph
faster:

**The big difference is about the $41,000 kit price plus $20k engine.  
....................................RV-10........Lancair ES
Horse Power.....................260 HP............310 HP
Cruise [75% @ 8000 ft]......201 mph..........225 mph
Stall Speed........................57 mph............65 mph
Takeoff Distance.................360 ft............600 ft
Landing Distance.................525 ft............800 ft
Rate of Climb...................1,950 fpm.......2,000 fpm
Ceiling (est.)..................24,000 ft.........18,000 ft
Empty Weight..................1,520 lbs.........1,900 lbs
Gross Weight...................2,700 lbs.........3,200 lbs
Max useful......................1,180 lbs..........1,300 lbs
Fuel...................................60 Gal.............95 Gal
KIT COST.............$34,910/($44,860 QB)....$75,500

If the RV-10 had a 310 HP engine it would cruise approx 6% faster:
201 mph x (310/260)^(.33) = 213 mph,
so the Lancair claimed cruise is 12 mph faster.


(end of quote).

I suspect, but wanted to confirm, that the ES's are a little faster than
published numbers?

Alan