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From: "colyncase on earthlink" <colyncase@earthlink.net>
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Subject: Re: [LML] Re: FADEC Rough idle explanation
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George,
    Can you please explain the math there?
    How do you get more HP at 5,000 with the same MP as sea level?
    Is that because there is less pressure at the exhaust?

Colyn

----- Original Message ----- 
From: "Marvin Kaye" <marv@lancaironline.net>
To: "Lancair Mailing List" <lml@lancaironline.net>
Sent: Tuesday, March 01, 2005 10:11 AM
Subject: [LML] Re: FADEC Rough idle explanation


> Posted for "George Braly" <gwbraly@gami.com>:
>
>   Why would you lean a TSIO-550 engine at a field with 5 or 10K density
> altitude?
>
>   The turbo at redline MP and RPM makes more HP at 5000 feet and 10,000
feet
> than it does at sea level.
>
>   Not a good time to lean it.
>
>   There is an NTSB report on this subject.  A crash at Pagosa Springs from
> some
> years ago. P210 leaned on takeoff.  Not a pretty picture.
>
>   Regards,  George
>
>
> """
>   Walter:
>
>   Any thoughts about leaning the TSIO 550 engine for high altitude
>   take-offs.  (5000' +)
>
>   Thanks,  Bill Hogarty
> """
>
> --
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