europa@avnet.co.uk
> In a message dated 17/06/99 12:28:29 Greenwich Standard Time,
> Roger.Mills@btinternet.com writes:
>
> << Has anyone found a neat way to increase the ventillation behind the panel?
> >>
>
> Apart from crew comfort, I found it absolutely essential to get the
> instrument bay temperature down to allow a 10.4 " TFT screen to survive. This
> will not take more than 25 C.and having parked a max/min thermometer behind
> the instruments I was regularly finding 40 to 50 C. As it is mostly coming
> through the firewall (the rest from exhaust gases heating the bottom of the
> pilot side footwell), anything cooling the engine bay will contribute, and
> if you have no cold box, it should help the carb air too.
> A dramatic drop resulted from a adding slotted vents in the top of the
> cowling.
This is probably a good way to cool the engine (as long as the slots are
far enough forward to be out of the high pressure zone right in front of the
windshield), but I am concerned that an oil leak might cover the windshield
with oil.
>...
> Finally slots from the outside world just below the windscreen work wonders,
I would also be worried that combining the above two ideas might allow carbon
monoxide into the cockpit.
What about having cooling air exit the engine on the sides (a nice low
pressure zone) and the cockpit air entering with the slots below the
windscreen?
Brian
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