I had a chance to fly the Viking RV N97HV for about four hours the past two days.  Warp Drive sent me a high profile prop for testing on my RV. It is a 68"  diameter ground adjustable.  I started with a 15 degrees pitch and takeoff roll was still a little over 200 ft.  I was over 100 ft. at the thousand foot marker.  Ran full throttle in four different directions at 4,000 ft. msl.  Average ground speed was 136.5 mph at an average rpm of 5,410.  Indicated air speed was 131 mph.

Second test was run today at 16 degrees.  Takeoff was a little longer and climb was not as good.  Stall alarm went off several times just after lift offand had  to lower nose several times.  Average ground speed at 4,000 msl in four directions was 133.25 mph.  All guages were good.  RPM was same as 15 degrees test. Indicated air speed averaged out to 127.25 mps.  I will be giving this information to Warp Drive tomorrow and see if we need any more test.   I really like the 15 degrees test.

Ron Russ