Today's Message Index:
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1. 12:26 AM - Re: Re: Low CHT (Richard Goode)
2. 03:16 AM - Re: CHT (Craig Payne)
Message 1
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Hello Sean,
Of course I had no idea who this might be, and "obsession" might be too strong
a term. But remember that the Russians have been using these engines for 50 years
without any kind of fuel flow measurement and don't seem to do too badly.
Certainly I have seen pilots adjusting suction jet purely on the basis of fuel
flow; ignoring cylinder temperatures and engine performance! Why I have no idea.
But the fundamental problem is that this CHT measurement system is not precise
and so dependent on a good contact with the cylinder head which so many people
do not provide.
And I know from long experience that suction jet sizes can make significant differences
to CHT.
Richard
RICHARD GOODE AEROBATICS
Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK
Tel: +44 (0)1544 340120 Fax: +44 (0)1544 340129
e-mail: richard.goode@russianaeros.com
www.russianaeros.com
WORLD LEADERS IN SOVIET & CHINESE RADIAL AIRCRAFT ENGINES
In partnership with Aerometal Kft, Hungary.
-----Original Message-----
From: owner-yak-list-server@matronics.com <owner-yak-list-server@matronics.com>
On Behalf Of Ttail
Sent: 13 July 2022 23:59
Subject: Yak-List: Re: Low CHT
" I feel too many people have expensive electronic fuel flow measurements and then
become obsessed by them. Engine performance and cylinder temperature are,
to my mind, the only important factors! '[i]
The reduction in FF was an observation not an "obsession". Its also kind of nice
to have a second independent fuel qty system.
The reason the jet was changed in the first place was consistently low CHT (on
all cylinders). After the change CHT is far more manageable.[/i]
--------
Sean Trestrail
ttail[at]internode.on.net
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=507469#507469
Message 2
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For non-sukhoi drivers, as in Yaks and CJ's with M-14's, there are two
levers located on the left cabin wall... they do Not need to be placed
fully towards the firewall=F0=9F=98=82. My experience taught me to operate
at one of
the published power settings so I could check for consistent
temps/pressures flight to flight. Gills and oil cooler positions seemed to
favor a "sweet" spot that yielded the same readings.
Craig Payne
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