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Old 03-16-2016 | 08:36 AM
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Default Help on thrown blade

Threw a blade on a mercury racing 5 blade 17.5 x 36 pitch.. 21 degree rake..850 hp prop...running 800 hp thru it. Looking at the hub where blade broke off..looks like it was a manufacturer flaw..any help from previous experience would be helpful.
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Old 03-17-2016 | 07:34 PM
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Ouch
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Old 03-22-2016 | 04:17 PM
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You'd have to approach Mercury Racing on that.
They have not made the 850HP for a number of years so I'm sure the warranty is expired.
Unfortunately propellers do have a life expectancy. You don't know when they may fail. Duty cycle is huge.

Brett
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Old 03-22-2016 | 08:30 PM
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That prop has been cracked for some time. Break the blade off the other side and run it.
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