|
Re: How to use the oil cooler vent door -- a
question
I have modified my oil door vent door with an extension piece to
divert some air towards the #2 jug. When the oil door is open
(leaning forward), the scoop is more (higher) in the incoming air
stream and encourages extra air downward while allowing higher air
passing over to reach the oil cooler box.
This modification was posted to the LML on 11 Jun 2007 (Digest
1193) with a diagram.
I plan to add the fenestration in the front wall of the oil
cooler box (that a number of people have already done) to further
encourage air around the back side of Cyl 2. George Braly at
that time (2007) encouraged something more than this modified oil
cooler door scoop extension that I made: "Number 2 can, will,
and does go ³out of round² a bit because the lower set of
cooling fins on the back side get almost no air flow from the normal
baffling installation. What you did does not address the
³block² in the air flow that affects that issue."
In general, because of this added scoop, the position of the oil
cooler door, either OPEN partially OPEN or fully CLOSED, does not seem
to adversely effect the CHT2 temp. This makes the oil cooler
knob's position not important to CHT2 temp, and allows me to titrate
oil temp as needed. In general, once oil temp climbs to 200*F,
the knob is adjusted and then (in general) left alone, not adjusted
based on CHTs.
My oil temp warning is set for YELLOW at 211*F.
Jeff L
LIVP (200 hrs)
Ok --
Here is an embarrassing question to even ask, but how do you guys
recommend using the oil cooler door?
My plane is a IVP. The little knob on the panel, pushed in,
leaves the little flap in front of the oil cooler open.
This would, I assume, cool off engine oil at the expense
of running cooling air around the #2 jug. You pull the
knob out and it closes the oil cooler door, sending more air around
the #2 jug at the expense of cooling off the engine oil.
So on a practical day to day basis ‹ how do you guys
use/operate/manage that oil cooler door?
Thank you,
John Hafen
IVP N413AJ 110 hours.
|