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This photo demonstrates how much the engine pulls down (and also to the left) relative to the cowl during normal operation in the Legacy. This was from a photo shoot at normal power. At rest, the spinner is flush with the cowl so I estimate at least an inch drop. This corresponds to what I'm finding with interference on the lower cowl but it is at least an inch away when I remove the cowl for inspection. My plan is to shim up the mount at the front two isolators. These are relatively new Berry mounts, no shims installed. All of the hard hits I previously had on the upper cowl are now removed. I use a white primer between flights inside the upper cowl to provide witness marks and the most recent flights have shown no interference. However, I still get interference during flight at cruise RPMs that I am starting to identify on the lower cowl. Hopefully, those are the last. Tight cowling + twisting engines = lot of work.
Paul
Legacy RG Spruce Creek
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