O200A Cruise RPM?

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8452
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Joined: Sat Apr 27, 2019 12:22 am
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Name: Larry B
Aircraft Type: 1948 Cessna 140
Occupation-Interests: Retired Automation Engineer, Nothing to do and all day to do it.
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Re: O200A Cruise RPM?

Post by 8452 »

I understand what you’re saying Victor. My previous O200 had a sweet spot at about 2450 and did well at that engine speed. The new engine seems happy at whatever engine speed I ask of it. Maybe that’s why I asked the question.

My Mooney really likes about 2500 at any MP you want to give it, but doesn’t feel happy at a lower or higher RPM.
Larry Bible

Returned to the club after three years away due to life’s changes
1948 Cessna 140, O200A, Ragwing, Custom IFR Panel
1966 Mooney M20F/J
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V529
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Aircraft Type: C-120
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Re: O200A Cruise RPM?

Post by V529 »

8452 wrote: ↑Sat Jul 13, 2019 12:29 pm I understand what you’re saying Victor. My previous O200 had a sweet spot at about 2450 and did well at that engine speed. The new engine seems happy at whatever engine speed I ask of it. Maybe that’s why I asked the question.

My Mooney really likes about 2500 at any MP you want to give it, but doesn’t feel happy at a lower or higher RPM.
Your Mooney and My Mooney were related. 2500 RPM was the smooth setting, anything lower was noticeably rougher.........higher was ok...........but why?
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7392
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Re: O200A Cruise RPM?

Post by 7392 »

Thanks for the comments. My 85, also seems to have a sweet spot. I've felt the
same about 'a smooth running engine is a happy engine'.

Larry Surratt
'46 C-140
#89011
Serial #8015
26R/JACKSON COUNTY TEXAS
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dmc140
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Re: O200A Cruise RPM?

Post by dmc140 »

I cruise at 2550 at 5000 ft and under and 2650 over 5000 fuel is between 23-25 lts
per hour
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