>What I saw yesterday is that the plate has been "eaten" badly (looks like >uneven grinding) on two opposed sides, exactly abeam the propeller blades >cutouts. >I then checked the spinner cone, and indeed, the fiberglass is eaten >exactly at the same place. >Would anybody have a convincing explanation for that? What must I do? >>Serge Vidal ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Serge, You are getting movement between the two components, probably because the spinner is not "perfectly" balanced. Achieving the "perfect" balance is probably not possible so you must attach the spinner in such a way as to eliminate the movement. I have an all aluminum spinner which includes a front and rear mounting plate. The front plate was a "press" fit so I didn't attach any hardware to it when first mounting the spinner. After about 10 hours of flight I had reason to remove the prop and noticed the spinner to front plate area was blackened from chaffing because there was some movement between the two. I added four or six screws to the front plate / spinner area and no more problem. I'm convinced you must have a front mount plate and that it must be secured with hardware. Others may suggest different and claim no problems. I'd say they are just lucky. Larry Flesner
