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EFIS Percent power calculation

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john.greenhalgh1(at)sky.c
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Posted: Thu Oct 06, 2011 2:38 am Post subject: EFIS Percent power calculation

I have a GRT EFIS which can indicate Percent Power on the display.  However, I need to calibrate the system first with engine data.  

  

 Just wondering if anyone has undertaken this task before and been able to obtain the data required.  Rotax has some parameters but not all.  My engine is a Rotax 912ULS with variable pitch prop (constant speed).

   

 The data I am after is the manifold pressure at a range of revs (2500 to 5500) for both 55% power and 75% power.

 Using the Rotax site I have been able to find the difference in power (delta hp) for increasing altitude from Rotax but it would be good to compare with other figures.

  

 Regards John

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