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M14P EGT limits

 
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rick(at)rvairshows.com
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PostPosted: Tue Nov 30, 2010 7:02 pm    Post subject: M14P EGT limits Reply with quote
What is the recommended maximum EGT allowed during full power level use in the M14P?
What determines the time limit at full power (99% rpm and max manifold pressure)? Is it CHT? Oil temp? The manual sets a five minute limit.

Rick Volker

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mikeholoman(at)hotmail.co
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PostPosted: Tue Nov 30, 2010 7:26 pm    Post subject: M14P EGT limits Reply with quote
The air compressor limit is 5 min at full power.
Mike
 
> From: rick(at)rvairshows.com
[quote] Subject: M14P EGT limits
Date: Tue, 30 Nov 2010 21:58:25 -0500
To: yak-list(at)matronics.com

--> Yak-List message posted by: RICHARD VOLKER <rick(at)rvairshows.com>

What is the recommended maximum EGT allowed during full power level use in the M14P?
What determines the time limit at full power (99% rpm and max manifold pressure)? Is it CHT? Oil temp? The manual sets a five minute limit=========



Quote:
[b]


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viperdoc(at)mindspring.co
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PostPosted: Tue Nov 30, 2010 8:21 pm    Post subject: M14P EGT limits Reply with quote
Rick,
Don't have my manual nearby but the CHT would be my choice. Five minutes at
100% is the number I remember also.
Found the manual.
Ceaseless engine function duration
- in T-O condition - 5 minutes, maximum
- at maximum engine speed - 1 minute maximum
- other conditions - unlimited
Cylinders heads temperature
-advisable - 40-190 deg C
-maximum, at prolonged engine function - 220 deg C
- maximum admitted at T-O and climb for max. 15 minutes ( tortal duration
maximum 5% from resource ) - 240 deg C
- maximum admitted for normal engine running - 120 deg C
This is from the original translated Russian IAK-52 Flight manual.
Still does not answer the question of what is the limiting factor. My gut
feeling is still CHT since the cylinder head is the source of the majority
of engine heat anyway.
Doc

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viperdoc(at)mindspring.co
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PostPosted: Tue Nov 30, 2010 8:21 pm    Post subject: M14P EGT limits Reply with quote
That is true also.
Doc

From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of Mike Holoman
Sent: Tuesday, November 30, 2010 9:24 PM
To: Matronics Yaks
Subject: RE: M14P EGT limits

The air compressor limit is 5 min at full power.
Mike

[quote] From: rick(at)rvairshows.com (rick(at)rvairshows.com)
Subject: M14P EGT limits
Date: Tue, 30 Nov 2010 21:58:25 -0500
To: yak-list(at)matronics.com (yak-list(at)matronics.com)

--> Yak-List message posted by: RICHARD VOLKER <rick(at)rvairshows.com (rick(at)rvairshows.com)>

What is the recommended maximum EGT allowed during full power level use in the M14P?
What determines the time limit at full power (99% rpm and max manifold pressure)? Is it CHT? Oil temp? The manual sets a five minute limit=========


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