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Old 29-02-2016, 09:57   #1
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Scratch in prop

I have a nick/scratch on my prop (forward edge) caused by a mechanic trimming the cutlass bearing with a hacksaw.

Is this a potential problem?
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Old 29-02-2016, 10:02   #2
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Re: Scratch in prop

Probably not, on the hub? not a notch in the blade right?
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Old 29-02-2016, 14:53   #3
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Re: Scratch in prop

Yes, the scratch is on the blade...
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Old 29-02-2016, 15:32   #4
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Re: Scratch in prop

If you can feel it then yes it's a problem. Even small nicks on the leading edge will reduce fuel economy, and balance. How much of a problem is a different story. The larger the nick, and faster the prop turns the bigger the issue. On a fast turning outboard prop I would absolutely have it repaired, on a slow turning sailboat it would just depend on the severity and how it feels underway.
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Old 29-02-2016, 15:43   #5
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Re: Scratch in prop

Smooth it out with a file, blend it in, it's what we do for aircraft props, biggest reason on aircraft props is a scratch or nick is a stress riser and over time a crack may develop there.


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Old 29-02-2016, 16:25   #6
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Re: Scratch in prop

Please don't fill too much...remember these things are balanced.
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