Jeff,
Do you have the Rotax fibre glass cooling cowl fitted to your engine? This
picks up the air from the Stbd front inlet and forces it down through the
fins.
Brian Davies
G-DDBD 912S Trigear
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From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of JEFF ROBERTS
Sent: 03 July 2008 21:34
Subject: Europa-List: Cooling & Cowling
Since I struggled with the cooling on my 912-S Tri gear for so very long I
thought I'd throw my thoughts into this subject. I have found the air
cooling of the fins to be inadequate. If you look at the round inlets in
relation to where the top of the engine sits you will find they are too low
and too outside. After trying everything to get mine to cool on the ground
and in the climb I finally got mad and took a drummel tool to the inlets and
opened them up a bit to the top and in towards the spinner. For now... she
looks a little sad but my CHT's instantly dropped about 10 to 15 degrees.
I'm going to work on the inside of these holes next to provide an expanding
1" wall to eliminate any turbulence of the incoming air flow.
Believe me I'v tried everything everyone has mentioned here from closing up
all the gaps around the rad to closing the gills. Nothing did more for taxi
and climb cooling than raising these holes. If you look at all the LSA's
with rotax engines the intakes are higher so the air can get to the top of
the engine before it's pulled or pushed down through the fins. The real
solution would be for rotax to start selling plenums like the Jab's then
route the hoses to fit over them.
Regards,
Jeff R.
A258 - N128LJ / Gold Rush 130 hours and enjoying every flight more.
PS. Jeff of Baby blue... If your making a mold that turns out successfully
try and saving it. I would love a better designed cowl. ;0)
Checked by AVG.
19:02
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