Thanks!

Pe:

Since I was in a destructive mood today, and the fact another propeller was tossed with a different failure mode, I got to hacking up some propellers.

The prop you depicted is the same make as two that failed. The difference between yours and one of the ones that failed is ...nothing. Pics of a stock prop core are attached.

Over the counter production propeller with a fiberglass core. It just looks like carbon under casual inspection. The lay up has no "tow" to limit compression. The core strength is determined by the resin content. A 'dry' lay up (does happen) and core compression resistance is severely compromised. That was one of the failure factors in the prop in my first post. I'm starting to like the wood core composite props better. Just don't hunker down on the screws.

Now that I'm thinking about it, a PT or Air Models prop hasn't been failed yet. I hate it when one is missed. Got another mission