Today's Message Index:
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1. 03:38 AM - Congrats to Jeff,Cooling feedback for Bud (Remi Guerner)
2. 10:35 PM - What exactly does the 4 UNI layup do on the wing root do? (rparigoris)
3. 11:34 PM - Wings that move (rparigoris)
Message 1
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| Subject: | Congrats to Jeff,Cooling feedback for Bud |
Hi all,
I have been following the cooling discussion with great interest as I
have done my own modifications to the cowling over the years with good
but not 100% satisfactory results.
As for most Rotax equipped Europas, the main issue is overheating on the
ground at high ambient temperatures. Worst case is when you land, stop
for 5 minutes, start the engine for another flight and have to hold for
a long time due to traffic before being cleared for take off, especially
if there is no wind or you cannot face into it.
An effective validation test for any cooling improvement should be:
ambient temperature 30-35=B0C (90=B0F, to be adjusted depending on where
you fly), no wind. After a short flight, taxi to the parking area, and
run the engine at high idle (2000-2200 RPM). Note the CHT every minute.
I would consider this test to be 100% satisfactory if I get the CHT
STABILIZED not higher than 110=B0C (230=B0F). Up to now I have not
managed to pass this test successfully at ambient temperatures above
23=B0C (67=B0F).
Could those who have done their own cooling modifications try this test
and let us know the results?
Best regards
Remi Guerner
F-PGKL, Monowheel, 912S, 696 hours
Message 2
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| Subject: | What exactly does the 4 UNI layup do on the wing root do? |
What exactly does the 4 UNI layup do on the wing root do?
Perhaps tie the spar to the front and rear lift pins better than if it was not
there?
Thx.
Ron Parigoris
Visit - www.EuropaOwners.org
Message 3
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I know that plastic aeroplanes change shape.
I finished filling the bottom of the starboard wing forward and aft of the spar
where there was a flat spot and in 85F degree heat it was nice and smooth.
Tonight I left starboard wing outside where it dropped to 64F when working on port
wing. When brought it back in, could feel a depression forward and aft of
the spar. Not too much but could in fact could feel it. When it warmed back up
to ~ 75F inside tent, depression was pretty much gone.
Perhaps I should fill different parts of the aeroplane at different temperatures
so when I want to play show and tell I can favor the part of plane that is flat
and true for a given temperature!
Ron Parigoris
Visit - www.EuropaOwners.org
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