If all of the velocity energy in the airflow can be converted to pressure
head at the carburrettor (by means of appropriately shaped inlets and
airboxes), then at 150 mph a boost of about 3% would be available and hence
about 3% more power. Which should put back some of the losses attributable
to not using the Rotax tuned exhaust (in the case of the 912S).
Duncan McFadyean
----- Original Message -----
From: "Roger Sheridan" <rogersheridan@btinternet.com>
Subject: The quest for speed
> Festive greetings to all,
>
> In the noble quest, there has been much debate and recommendation.
>
> Has anybody considered using ram air to feed the carb plenum on a
> normally aspirated engine? Would it offer a significant performance
> increase?
>
> Peter Kember had designed a chin mounted ram inlet, principally for
> cooling, but I believe it could also supply induction air if required.
>
> Just wondering...........
>
>
> Rog Sheridan (still building!)
>
>
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