Marty71112 Posted May 30, 2017 Report Share Posted May 30, 2017 Proud new owner of M20F. Running weight and balance problems while waiting for post-prebuy annual, can't get my CG to work Empty CG is shown as 49.94 on most recent (2004) W&B. Previous W&B (no interim mod) showed 46.17. No major mods to airplane. Could 49.94 be right, or should I just have A/C reweighed? Thanks! marty Quote Link to comment Share on other sites More sharing options...
M20F Posted May 30, 2017 Report Share Posted May 30, 2017 20 minutes ago, Marty71112 said: Proud new owner of M20F. Running weight and balance problems while waiting for post-prebuy annual, can't get my CG to work Empty CG is shown as 49.94 on most recent (2004) W&B. Previous W&B (no interim mod) showed 46.17. No major mods to airplane. Could 49.94 be right, or should I just have A/C reweighed? Thanks! marty When was the previous one done and did you check the math on the one done in 2004? Quote Link to comment Share on other sites More sharing options...
Jerry 5TJ Posted May 30, 2017 Report Share Posted May 30, 2017 If you work back through the logs you will likely find one or more errors in W&B in the past 50 years, Especially from the pre-spreadsheet era. At this point you could reweigh the plane to establish a new weight and CG. Many will advise you not to because "you'll lose useful load" if the report comes in heavier. Me, I'd rather know the real weight and especially the true CG. 1 Quote Link to comment Share on other sites More sharing options...
Yetti Posted May 30, 2017 Report Share Posted May 30, 2017 Mine is 44.37 1714.8 calculated not weighed Quote Link to comment Share on other sites More sharing options...
Marty71112 Posted May 30, 2017 Author Report Share Posted May 30, 2017 Anyone know the moment arm of the main gear on f model. Would like to verify the calculations on aircraft weighing. Thanks for your help! marty Quote Link to comment Share on other sites More sharing options...
RLCarter Posted May 30, 2017 Report Share Posted May 30, 2017 20 minutes ago, Marty71112 said: Anyone know the moment arm of the main gear on f model. Would like to verify the calculations on aircraft weighing. Thanks for your help! marty Moments and Arms are different, the Type Certificate Data Sheet will have the arms, post a copy of the latest WnB Quote Link to comment Share on other sites More sharing options...
Marauder Posted May 30, 2017 Report Share Posted May 30, 2017 Proud new owner of M20F. Running weight and balance problems while waiting for post-prebuy annual, can't get my CG to work Empty CG is shown as 49.94 on most recent (2004) W&B. Previous W&B (no interim mod) showed 46.17. No major mods to airplane. Could 49.94 be right, or should I just have A/C reweighed? Thanks! marty Here is mine (75 F):Sent from my iPhone using Tapatalk Pro Quote Link to comment Share on other sites More sharing options...
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