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john_graham
Joined: 09 Aug 2007
Posts: 45
Location: Algonquin, IL
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 Posted: Wed Oct 10, 2007 5:15 am Post subject: Yak 52 engine at cruise |
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Is there any danger or harm to the engine if I leave
the throttle and prop at "7 squared" for extended
periods of time while just cruising along? I don't
want to foul any plugs, but I have been flying at this
setting as it seems to be fairly economical with
respect to gph.
Thanks,
John P. Graham
CubFlyer1940(at)Yahoo.com
Cell phone (847) 641-1330
Tonight's top picks. What will you watch tonight? Preview the hottest shows on Yahoo! TV.
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_________________
John Graham
N15YK 1993 Yak-52
CubFlyer1940@Yahoo.com
(847) 641-1330 |
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dsavarese(at)elmore.rr.co
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| Posted: Wed Oct 10, 2007 5:52 am Post subject: Yak 52 engine at cruise |
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There is nothing wrong with running the engine at those settings. Take a
look at the Russian M14 power setting chart. These settings will give you
the most efficient settings. As you will/can see, running the engine
"oversquare" is the most efficient power setting in cruise.
Dennis
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viperdoc(at)mindspring.co
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| Posted: Wed Oct 10, 2007 5:59 am Post subject: Yak 52 engine at cruise |
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No, not at all. The harm comes in not watching the cylinder head temps and
oil temps. The temps are seldom a problem at 70/700 as long as your gills
(shutters/cowl flaps) are appropriately positioned. That engine like 70%,
80%, 60% ect as long as it is not to hot. She almost bullet proof as long as
you don't get her to hot and especially if you keep her there.
Doc
--
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cpayne(at)joimail.com
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| Posted: Wed Oct 10, 2007 3:23 pm Post subject: Yak 52 engine at cruise |
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And what IAS might you see at a given altitude, using that 70 squared setting?
Craig Payne
cpayne(at)joimail.com (cpayne(at)joimail.com)
[quote][b]
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craig(at)ustek.com
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| Posted: Thu Oct 11, 2007 2:43 am Post subject: Yak 52 engine at cruise |
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Approx 130kts at 3-5K FT (fuel flow on the EI shows 16-18GPH)
From: Craig Payne
Sent: Wed 10/10/2007 7:22 PM
To: yak-list
Subject: Yak-List: Re: Yak 52 engine at cruise
And what IAS might you see at a given altitude, using that 70 squared setting?
Craig Payne
cpayne(at)joimail.com (cpayne(at)joimail.com)
[quote][b]
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netmaster15(at)juno.com
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| Posted: Thu Oct 11, 2007 8:12 pm Post subject: Yak 52 engine at cruise |
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wHEN YOU DECIDE THAT YOU CANNOT KEEP THE ENGINE RUNNING BY PUMPING AND MAKING IT TO THE RUNWAY IS QUESTIONABLE DONT FORGET TO PULL THE PROP ALL THE WAY BACK INTO HIGH PITCH- - LOW RPM--- yOU DONT NEED A SPEED BRAKE OUT FRONT
-- Craig Schneider <craig(at)ustek.com> wrote:
Approx 130kts at 3-5K FT (fuel flow on the EI shows 16-18GPH)
From: Craig Payne
Sent: Wed 10/10/2007 7:22 PM
To: yak-list
Subject: Yak-List: Re: Yak 52 engine at cruise
And what IAS might you see at a given altitude, using that 70 squared setting?
Craig Payne
cpayne(at)joimail.com (cpayne(at)joimail.com)
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[quote][b]
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