Old 04-06-2015, 02:17 PM
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Originally Posted by jester_s1 View Post
Every prop I've ever owned has been raised at the back so that it doesn't touch the backplate. Nearly every plane anyone ever built winds up with a spinner on it, so the prop manufacturers design their props to work with them.
Could it be that all of your props are nylon? I have a Great Planes spinner with aluminum backplate that contacts all of my wooden props, regardless of brand, from the center of the backplate to the outer edge of the backplate. I have noticed that nylon props have about a 1/32" clearance with this backplate. Maybe with wooden props, the center of the backplate hub essentially extends to where the trailing edge of the prop curves away about half way down the total length of the prop?