Jeff,
Should I end up with a cowl that pleases me, esthetically and does the
job on cooling and air speed, I will use it as a plug and build a mold
for it. I'm sure you could twist my arm for use of the mold... :)
Jeff - Baby Blue
JEFF ROBERTS wrote:
> 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)
> size=2 color="#000000" face="courier new,courier">
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