Mailing List lml@lancaironline.net Message #4725
From: Lynda Frantz <LFrantz@compuserve.com>
Sender: Lynda Frantz <LFrantz@compuserve.com>
Subject: Run Up
Date: Mon, 21 Feb 2000 12:42:49 -0500
To: INTERNET:lancair.list@olsusa.com <lancair.list@olsusa.com>
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Message text written by INTERNET:lancair.list@olsusa.com
>Do you do your run-ups at full RPM also<

Takeoffs  for injected engines are made at full power because they need the
extra fuel cooling that is metered into the engine only at full throttle
settings.  The reason for this is that during T/O the cooling airflow is
low and the engines are not designed to run at above 75% power without a
full (over rich) rich setting.

I do my engine runup after the oil temp is up at no more than 1,800 RPM
checking for mag drop, oil pressure and smoothness.  I check the engine
instruments again during the takeoff roll just after full power is applied.
 I do the prop cycle check at about 1500 rpm.

Jim Frantz  

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