Hi all,

I'm wondering what others are using for your prop pitch and what cruise speeds/climb rates you're seeing.

I have a 120hp Corvair with a Warp Drive 66" prop (10.0deg) in my 601xlb, and am seeing ~92knots cruise (at 2600rpm) and ~900 ft climb rate.



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Hi Peter,

I get about 5 gph at 89knots/2600rpm/7500agl


Here is my data thus far, still in phase 1 testing:

WW 2850cc with Sensenich W64ZKL-35 (64x35, definitely a climb prop).

Full Static RPM - 2980RPM (12:1 AFR)

Flight Data 4740 Density Altitutde:

3200 RPM (WOT) - 87kt indicated 94 True

2880 (-10% RPM, 73% pwr) - 79kt/85kt

2560 (-20% RPM, 50% pwr) - 65kt/69kt

2950 RPM, 12:1 AFR (best power), I get 81-82 kts indicated, and ~6 gph. I do not have a fuel flow meter, so this was measured using one tank only at cruise with a timer. This will probably be my cruise rpm, but leaned to 13:1

I have a Cruzer with 21" mains and 8.00-6 on the nose. 

"Definitely a climb prop"

So what was the "CLIMB?"  

 error in post


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