I had to get rid of my Kiev prop I just just received it last week to replace my Warp. Damn it was beautiful !!!!
It just wouldn't perform as well. The dealer told me that I was the ONLY one of more than 500 props he has sold that did not get at least a 5-10 mph increase in cruise speed (that figures)
Here are the numbers:
Notes: The pitch settings are per Kievs pitch adjustment tool not actual angles,the Kiev was 1 lb lighter. The Kiev was a whole lot smoother (like a turbine). During approach it took 2800 rpm to maintain 55mph approach speed vs idle on the Warp. ( kind of like going prop full increase on a constant speed) This was fine as the Kiev is a broader aerodynamic prop vs a slab. It was smooth,smooth,smooth !
WARP:
(1) 5200 static,90mph at 5000 rpm,5700 full throttle
Conclusion: I LOVED the looks of the Kiev but you can look only so much so I went back to my Warp. Bummer !! If I could have reached 5200 static (required) and the same cruise speed as the Warp,I would have kept it in a heartbeat ! I think the round cowl on my Fox is probably the reason I didn't get excellent results. The blade twist on the Kiev starts right at the hub whereas the twist on the Warp starts further out resulting in more air being stuffed into the cowl with the Kiev and more drag. (my theory anyway)The CHT and Oil temperatures were sure cooler with the Kiev
The production on these props is pretty well sold out for the next 3 months as it is a pretty popular prop in this area of the country. I sold it in an hour.
Dick Maddux
Rotax 912 UL
Milton,Fl