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CG adjustment sanity check

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Defenseman1

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I'm going to re-weigh my Acroduster Too after I finish the Grove Gear install and Catto prop swap. I did a quick math calc for the prop based on rough numbers (17 pounds less than metal Sensinich) and it looks like CG moves back 3/4 inch. Anybody else swap to a lighter prop and get a similar result?
 

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