Warms up quicker (therefore less cooling airflow) when pointed downwind on
the ground. Also, prop vibration worse.
Sorry to confuse the 'theory'!
Duncan McF.
----- Original Message -----
From: <rparigor@suffolk.lib.ny.us>
Sent: Monday, April 30, 2007 1:21 AM
Subject: Europa-List: Into wind or downwind to run cooler on ground?
>
> I just read an artilce in April Kitplanes "Baffled by Baffles". One of the
> things discovered after tufting everything including the intake for large
> displacement aircooled engine was when pointed into the wind, even doing
> run up there was absolute no airflow! They descided to not go flying till
> they figured out why, and when headed back the second they turned
> downwind, air began to flow (They had small camera able to view what was
> going on). They began to fool on ground and sure as anything, no flow into
> wind, flow begins when downwind. Conclusion was the prop was at more of an
> angle of attack pointed downwind and was creating a larger low pressure
> area.
>
> Has anyone actual tried pointing downwind, versus pointing into the wind
> when stuck on the ground for extended periods with a Europa? Does pointing
> downwind yield lower temperatures?
>
> Especial interested in results with monowheel with "Groundloop" adjustable
> Airmaster prop (course and fine tested)?
>
> Thx.
> Ron Parigoris
>
>
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