The SR20 service ceiling is listed at 17,500. My recollection of the FARs is that 17,500 feet is the highest altitude that an SR20 can con’t to climb at 200 fpm while at max gross wt.
I have been pestering the cirrus pilots and later (at OSH) the Hartzell techies about the differing characteristics of the 2 vs 3 bladed prop. I feel comfortable with my consensus answer: there is not much difference, but that which exists would be a slight climb advantage to the 3-blade, and a slight (up to 3 knot) top speed advantage to the 2 blade up until moderate altitudes.
Having gone through all that: have any of the real SR-20 pilots got a feel for their top speeds and climb rates, both at moderate (8000 ft) altitude and high altitude (15000 ft)? I’d love to hear some real-life numbers from both 2-blade and 3-blade cirrus owners.
N204AK (still #158).