Mailing List lml@lancaironline.net Message #53154
From: Craig Berland <cberland@systems3.net>
Sender: <marv@lancaironline.net>
Subject: RE: [LML] Re: LOP MP setting for TSIO-550E
Date: Fri, 09 Oct 2009 16:25:45 -0400
To: <lml@lancaironline.net>

Is it 73% power no matter how I set the MP, so long as temperatures remain in control?  If that's true, why would I select one MP over another (realizing I can't run wide open throttle)?

 

Yes, it remains at 73% power.  When flying LOP, fuel rate is power.  You are much “leaner” at 32 inHg than you are at 30 inHg.  Add fuel at 32 inHg and you will go faster and your cylinder heads will still stay under 380 degF.  Nobody likes a slow airplane.

Craig Berland

IV-P N7VG

 

My ES-P has a TSIO-550E with GAMI injectors, and I’ve recently been through advanced pilot's web LOP course.  But I'm still unclear on at least one point.

My TSIO-550E will happily run at 17.5 GPH at a MP of any of 30, 31, 32 (among others).  All cylinders remain below 380, and TIT is reasonable.

My understanding is multiplying 14.7 x GPH yields HP, in this case 73.5% power

Is it 73% power no matter how I set the MP, so long as temperatures remain in control?  If that's true, why would I select one MP over another (realizing I can't run wide open throttle)?

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