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Old 12-06-2012, 05:24 PM
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Sparky Sparky is offline
Join Date: Nov 2006
Location: Perham, MN
Posts: 350

If I'm not mistaken, engine mount wobble (wet dog shake) is mostly rotational. The rubber engine mounts don't allow much, if any, fore/aft movement. So while "wet dog shake" may be an issue with baffle or FAB clearance, I don't think it's much of an issue with prop blade clearance. I'm comfortable with 1/2" longitudinal clearance between the prop blade and the cowl.

Edit: Also, I believe "wet dog shake" is less pronounced with a low-inertia composite prop than with a heavier metal prop.
Paul Winkels
RV7 Standard Build - First flight 4/16/2016 - Now Flying!

Last edited by Sparky : 12-06-2012 at 05:52 PM.
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