Guys
Cheers
Ed
South East London Flying Group
http://www.crispsite.flyer.co.uk/newropa.htm
Subject: Re: Effect of Propeller Blades on Engine Cooling
Hi Folks
Yes indeed, I too have been following this subject. We have elected to put
the Jabiru 3300 on the front of our aeroplane, and have shown on our updated
web site some installation information for anyone tempted with this power plant.
We have elected to go for a fixed pitch wooden two blade prop as this is what
Alan Bowden is using successfully on his europa in Australia. My view is that
there is enough to worry about with a new a/c, without having to worry about
cooling and the adjusting the prop. However, I only have 120 hours in total
so I would say that wouldn't I !! I believe that there are only a few hundred
hours on the 3300 too, so that is another reason to keep the setup as simple
as possible. When I have more confidence with the engine, engine cooling,
tortional
vibration not destroying the prop and my ability to fly the plane, I too
will upgrade to a VP prop if the other members of the group want to.
http://www.crispsite.flyer.co.uk/newropa.htm
Keep up the good work
Eddie
South East London Flying Group
---
-- Original Message -----
From: Eddie and Sue Lindsay
Subject: Effect of Propeller Blades on Engine Cooling
To All: Of late, there has been an interesting dialog on the Jabiru
builders
net (jabirubuilders@egroups.com) regarding the effect that propeller design
has on engine cooling. Tony Krzyzewski (Hello, Tony) seems to be one of
the more active participants in that dialog. In part, much of that discussion
has focused on the effect that the design of a given propeller, particularly the
airfoil/chord that falls within the propeller arc encompassing the cowling
air inlets, can have on engine temperatures. Of particular interest to me was
a recent discussion of the relative cooling benefits derived from blades with
larger chords (e.g. wood props such as the Prince) vs. props with much narrower
chords (e.g. Warp Drive, Ivo, Airmaster, etc.). While I lack the engineering
expertise to fully understand all aspects of those discussions, I've found them
to be of considerable interest and very enlightening. Certainly, they are
excellent
"food for thought" (a Colonial expression, yes, Graham?). In any event,
perhaps Tony would be amenable to summarizing the Jabiru Builders group's
discussions on this subject for the benefit of his many friends here in the
Europa community? I would add, at risk of repeating what I believe I have
already
read in some previous communication within our group, that anyone contemplating
the installation of a Jabiru engine might find that subscribing to the
Jabiru Builders net to be of some value/interest. As I'm sure most of you
know, Tony's arm can be appropriately "twisted" at tonyk@kaon.co.nz. I'm sure
he has absolutely nothing better to do. Are you there, Tony? -Ed Lindsay,
A029, New Mexico, The Colonies (in North America)-
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