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Re: Europa-List: FW: New 914 Exhuast muffler and tailpipe

Subject: Re: Europa-List: FW: New 914 Exhuast muffler and tailpipe
From: Fred Fillinger <n3eu@comcast.net>
Date: Mon, 9 Aug 2004 23:48:52

Kevin Klinefelter wrote:
> It looks like the new muffler (silencer) makes the
> bulge in the cowling no longer necessary?  I was thinking cutting it
off and
> re-glassing the area smooth and symmetrical with the other
side...Probably a
> lot work for a tiny reduction in drag?
>
> Also the new tailpipe is longer. I have noticed on the XS (pictures)
that
> the pipe is pointing pretty much down instead of back. A less draggy
look
> would be aimed back with the flow more. Is there any reason for not
aiming
> the pipe a lot more aft?

Answer to both...got a wind tunnel?  :-)

It's a real skinny pipe, so ain't talking much.  But a round pipe
angled becomes a messy oval for less drag, as you implied.  As I look
at various production aircraft, seems they either don't care or know
why they shouldn't care.

Reg,
Fred F.




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