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Mark & Scott,
My empty CG is 22.3". With a 150# pilot and 8 gal in the header I would be at 24.5".
My fore and aft CG limits are 24.9" and 30.6".
With my harmonic dampener, Aero Composites prop, me (250#), 20# of tools up front, 5 more in back and full header. I get: 25.7". I land like this some times but can only use 25° of flap. No wonder I don't have enough elevator.
Loaded up a lot to 1,900#, my CG is 29.5" and thats pretty far back.
Lorn
From: Sky2high@aol.com
Date: September 30, 2008 10:47:55 AM GMT-04:00
Mark,
Even more interrrrresting........
What is your empty weight CG? Mine is 20.8" Also, with a 150# pilot and 8 gal in the header my CG would be out of the forward envelope at 23.4"" (12% MAC). BTW, I have a 12# harmonic damper on the flywheel along with the heaviest Hartzell prop.
What is your flap setting for these landings? Moving the flaps up somewhat can change the pitch authority and I wonder if you have tried using the flaps to assist in elevator authority.
Scott
In a message dated 9/29/2008 12:14:46 P.M. Central Daylight Time, mjrav@comcast.net writes:
I suppose I qualify at 150 lbs.
Std 360, battery in the footwell, Hartzel CS prop.
Generally, I make a point to NOT have all fuel in the header on a lightweight landing. Having it 1/4 to 1/2 full is safe enough.
What happens is that I run out of aft stick travel in the flare and will have a hard landing if I'm not very close to wheels down.
The further foreward the CG, the faster the landing speed must be. Mostly, it's just hard on the tires.
.
.
Mark Ravinski
360 1447 hrs 1077 of it mine.
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