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Old 03-14-2021, 02:10 PM
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I have a 12 / 9 on my C&C 30 and it does everything well. It's an old design michigan prop. A 12 /7 would also be a decent prop for that boat. If you were looking around for either I double check the size of the shaft (usually 7/8 inch) unless someone changed it. Check on-line, ebay etc. If buying a new prop buy a 12 inch. The other option is 2 blade props but they don't reverse as well.

With that small prop diameter you have I'd think you'd be doing some higher rpms in forward gear as well and sucking a bit more fuel than you need to be.
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"Odyssey"
1976 C&C 30 MKI

The pessimist complains about the wind.
The optimist expects it to change.
The realist adjusts the sails.
...Sir William Arthur Ward.

Last edited by Mo; 03-14-2021 at 02:13 PM.
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