If the holes are for balancing then I wonder why are they not symetrically opposite each other? Wouldn't it be more efficient for the prop manufacturer to sand off a teeny bit from the blade rather than drill a hole that is so close to the hub.
I don't know the answer and probably it doesn't really matter other than for curiosity, but I thought that perhaps the holes are tooling holes from the manufacturing process.
Pacesetter is a great performing prop, the best fixed pitch I have ever flown behind!
Ever flown behind a Catto?
If the holes are for balancing then I wonder why are they not symetrically opposite each other?