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McCauley 73/51 1-A-90

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03 Dec 2016 16:24 #1 by Larry Snyder
Replied by Larry Snyder on topic McCauley 73/51 1-A-90
No, that isn't a legal prop for a C-85. Sounds like the engine had been a C-75 and was upgraded to a C-85. The maximum length of a C-85 pop is 71" and the minimum length is 69.5". I'm pretty certain my prop was a 73/51 when my engine was a C-75. You can have it cut, repitched and overhauled at a prop shop.

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  • Ed Marcotte
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03 Dec 2016 16:15 #2 by Ed Marcotte
McCauley 73/51 1-A-90 was created by Ed Marcotte
I'm a newbie thinking of purchasing a 415-C Ercoupe. It has a C-85 F engine with a McCauley 73/51 1-A-90. Is this a legal prop? I looked at McCauley's website and it shows this prop on the C 75 but not the C 85. Thanks!

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