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Looking forward to these results :)
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Any results???
Checking in to see if you had any numbers to share with us
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Not yet
We have had some fitting issues, but getting them resolved.
Inital numbers are good/faster. Main thing is 18 lbs lighter......prop and spinner combo. Very pretty prop too... I say this and it sounds hollow but it is true. A prop up until now has been a hunk of wood or metal with various paint jobs. This prop has a finish that would rival the best paint job out there. Almost TOO pretty. One really has to be careful using powerful tools to torque nuts and safety wire etc around this prop. Normally a prop just gets a cleaning or a wipe down, etc, but this prop begs for wax and to be taken care of. |
Performance?
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Thanks, Brian |
Cg considerations
Bob, I am sure you have considered the effect on cg that this change will cause.
Several hundred hours ago, I switched from a 200rv to a hartzell Aluminum to gain 19 pounds on the nose. The cg moved from tending towards aft to right in the middle of the range. The flying characteristics are substantially improved. a 6 with aft range cg?s can be very sensitive in pitch, have tendencies to bounce landings and limits aft baggage in a meaningful way. Hope you are not going there. |
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No final numbers, preliminary numbers are good. 4mph faster at low cruise. Time to climb to 8K was 6 seconds faster. We had fitting issues with our James cowl and WW had us install a coarse stop ring in the hub. We are testing now for flight envelope. adjusting governor, etc. Once we are set, we will rerun the speed and time to climb tests. |
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Thanks for the input. I will look at the W&B, we have a recent one! Our -6 went from a wood prop to a metal Sensenich to a C/S Hartzel to a James cowl conversion that included a 2.25 extension. So we have gotten heavier and pushed the heavy prop farther out. Taking 18 lbs off the nose seems like a wonderful thing. It also made our wallet thinner. :rolleyes: |
Hmm, interesting journey. I thought at one time that the extended James cowl with composite prop might be the optimal six configuration. Go for it and good luck!
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What about the cowling?
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A friend of mine is contemplating the change from the WW to the Hartzell composite CS prop. When you made this conversion, how well did it fit with your existing cowling? Or did it require surgery on the cowling for fit? |
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