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Old 25th January 2007 | 19:58
  #12 (permalink)  
gulfairs
 
Joined: Nov 2001
Posts: 126
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From: Kerikeri New Zealand
recip engine power
A rough guide for power deficiency is:
power reduction due to MP . one inch of MP below 29 inches equals about a 3.5% hp.
Each 100 RPM below 2700(rated RPM) equals 2.5% in HP
Have a look at Kitplanes December 2006 pg 22
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