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RPM Limitations with McCauley 3 Blade prop

 
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rv8bldr



Joined: 08 Feb 2018
Posts: 26
Location: Pakenham, Ontario, Canada

PostPosted: Wed May 08, 2019 9:32 am    Post subject: RPM Limitations with McCauley 3 Blade prop Reply with quote

Hi folks

The M5-235C I bought last year came with the McCauley 80" 3 blade propeller as per Supplement #19.

My question is whether or not there are engine operation restrictions with that prop like there is for the Hartzell 2 blade. From the POH: "Do not exceed 23" MP below 2050 RPM. This is a propeller vibratory stress limitation".

I have read Supplement #19 and it makes no mention of restrictions. Does that mean the POH restriction still applies?

Thanks in advance....
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Mark
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TxAgfisher
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Joined: 23 Sep 2015
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Location: New Mexico

PostPosted: Wed May 08, 2019 2:00 pm    Post subject: Reply with quote

I think it's only for the O-360.
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TJ Van Matre
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Kirk
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Joined: 17 Oct 2006
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PostPosted: Thu May 09, 2019 12:34 am    Post subject: Reply with quote

The restriction is there for the O540-J1A5D with the Hartzell.

I think the 3 blade deletes that but can’t confirm.

Kirk
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rv8bldr



Joined: 08 Feb 2018
Posts: 26
Location: Pakenham, Ontario, Canada

PostPosted: Thu May 09, 2019 4:19 am    Post subject: Reply with quote

Thanks for the responses, guys. That is what I am assuming, but I find it strange that the POH supplement as issued form Maule doesn't address this.
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Mark
President EAA Chapter 245
'79 Maule M5-235C C-GJFK
RV-8 C-GURV (Sold)
Bearhawk 4pl - Under Construction
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