by Bryan Cotton » Sun Dec 18, 2022 12:29 am
I converted your numbers to work in my spreadsheet. The wing leading edge is 52" aft of the standard Sonex datum, the tip of the spinner. If I assume you are 150 lbs and have full fuel, that puts you at 64.38" which is within the CG range, although forward. My worst case forward CG at my weight (200 lbs) is about 65.12". I am working at getting to 170 which would put me at 64.75". At the 65.12" I'm not seeing any trim issues in cruise.
Do you have trim installed? I need to trim throughout the speed range.
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- skippydiesel W&B.xls
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Bryan Cotton
Poplar Grove, IL C77
Waiex 191 N191YX
Taildragger, Aerovee, acro ailerons
dual sticks with sport trainer controls
Prebuilt spars and machined angle kit
Year 2 flying and approaching 200 hours December 23