A few years ago there was the Vic Vans and Randy vans comparo..around
the same altitude.
I attached the sheet
Pascal
From: John Cumins
Sent: Wednesday, August 27, 2008 3:17 PM
To: rv10-list@matronics.com
Subject: RE: Hartzell Composite three blade test against
Van's N410RV
Who out there in RV-10 land is running the MT 3 blade prop. Can you
post your average True airspeed at say 7500 or 8500 and what power
setting are you using.
This would be a nice data point to compare also.
John G. Cumins
#40864 Vstab done working on rudder
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From: owner-rv10-list-server@matronics.com
[mailto:owner-rv10-list-server@matronics.com] On Behalf Of Patrick
Thyssen
Sent: Wednesday, August 27, 2008 2:34 PM
To: rv10-list@matronics.com
Subject: Re: Hartzell Composite three blade test against
Van's N410RV
Maybe van needs to balance the prop?
Pat Thyssen
--- On Wed, 8/27/08, RobHickman@aol.com <RobHickman@aol.com>
wrote:
From: RobHickman@aol.com <RobHickman@aol.com>
Subject: Hartzell Composite three blade test against
Van's N410RV
To: rv10-list@matronics.com
Date: Wednesday, August 27, 2008, 1:23 PM
Ken Krueger, from Van's, and I tested our RV-10 with the
three-blade composite prop against Van's RV-10 N410RV with the metal
two-blade prop.
We flew both airplanes at 8,000' density altitude, 2500RPM, full
throttle, 50F ROP for a total of about 75 miles out and back. Our best
estimate is that the three-blade prop is 7 kts slower than the blended
airfoil metal prop.
Ideally, we should test the two-blade blended airfoil prop on our
RV-10 and use that as the comparison. This would eliminate the variables
involved when using two separate planes. Keep in mind that our RV-10 is
still unpainted and needs some cleanup on the fairings.
After we both landed, Ken flew our RV-10 and was very impressed
with how smooth the prop was. Ken's direct quote was, "it is
dramatically smoother than N410RV, and it makes no difference if you run
2300, 2400 or 2500 RPM, it is always extremely smooth".
Even if it turns out to truly be 7 kts slower, there=A2s no way I
would give up the smoothness for a little more speed.
Rob Hickman
N402RH RV-10
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