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goodings(at)yorku.ca
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 Posted: Wed Jun 11, 2008 6:05 am Post subject: Rotax high oil temperature |
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Frank: What Bryan and Dave said about increasing the air flow OUT is
absolutely correct, in my experience. In addition, and on the advice of
ZAC (Nicholas Heintz - this was the early days of the Rotax 912S in 2002,
which presented new cooling problems compared with the 80 HP R912), ZAC
sent me a wide fibreglass NACA vent which I installed under the main air
intake aperture in the front of the cowl, right in front of the oil cooler
radiator. It was necessary to cut a sort of rectangular hole through the
cowl and fibreglass the NACA vent in place, but it wasn't hard to make a
nice job. Perhaps ZAC still has some of these NACA vents. One important
point with any of these vents: the gap between the fibreglass and the
metal rad must be as small as possible without any chance of rubbing;
otherwise, the air goes around the edge, and not through the rad. Thus, I
suggest that you increase the outlet area at the rear-bottom of the cowl,
and make a 1" lip as Bryan and Dave suggested. If that isn't
satisfactory, you might pursue the NACA vent route in addition.
John Goodings, C-FGPJ, CH601HD with R912S, Toronto/Carp/Ottawa.
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Jeyoung65(at)aol.com
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| Posted: Wed Jun 11, 2008 6:47 am Post subject: Rotax high oil temperature |
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I have a question about the gap for a corvair not the Rotax. What kind of gap is used for this engine? Jerry of GA DO NOT ARCHIVE
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