Re: When to Rehub prop?
As rndn says, most props aren't rehubbed unless the bond between the rubber and the prop lets go and the hub spins. That said, yours looks like it is getting ready to let go but the question is "when?" Nobody can predict that. Your best insurance would be to buy a new prop and use this one for backup if you are at all concerned. Aluminum props are not a major investment in the overall scheme of things.
