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.
RV7 Standard Build - First flight 4/16/2016 - Now Flying!
Last edited by Sparky : 12-06-2012 at 05:52 PM.