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From: George Braly <gwbraly@gami.com>
To: "'lancair.list@olsusa.com'" <lancair.list@olsusa.com>
Subject: RE:  TSIO-550 power settings ?
Date: Wed, 26 Dec 2001 00:20:05 -0600
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Reply-To: lancair.list@olsusa.com

          <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>>
          <<  Lancair Builders' Mail List  >>
          <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> 
>>


	I would like to know how the Lancair IV & IVP folks "normally" fly
the TSIO-550 engines.

	The reason I ask is because we (at GAMI and/or Tornado Alley Turbo)
are thinking about offering a modified TSIO-550 engine along with our PRISM
ignition system.

	We are currently flying a modified turbo 550 which is routinely
making 265+ Hp in cruise at 60 to 100 LOP, smooth as a baby's bottom, and
burning about 18 and small change for fuel.  Hottest CHT at altitude is <
380F.

	With PRISM ignition, and modified as we anticipate, this engine
could make 375Hp at takeoff and maintain peak combustion pressures at or
below those presently encountered  . . . and probably cruise at 275 to 300Hp
continuous, but maybe only 265Hp... we would just have to see.


	So how do you fly your engines, now?


	Takeoff:			MP	RPM	FF	Hottest CHT?
How Hot?  TIT ?


	Climb:			MP	RPM	FF	Hottest CHT?   How
Hot?  TIT ?


	Cruise @ 16-18K 		MP	RPM	FF	Hottest CHT?
How Hot?  TIT ?


	Cruise @ 25K		MP	RPM	FF	Hottest CHT?   How
Hot?  TIT ?



Your input would be appreciated.    George Braly
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
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Please send your photos and drawings to marvkaye@olsusa.com.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>