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Old 2nd March 2013 | 23:54
  #30 (permalink)  
poteroo
 
Joined: Jun 2001
Posts: 509
Likes: 28
From: Albany, West Australia
Bas yes, aware of the small disadvantage with coarser pitch settings. My Superior IO-360 RV9A is running an 87 inch pitch Sensenich and I climb out at 110-115 KIAS which gives me a good 2400 RPM and 1000 fpm climb. At the Vy of 95 - it labours a little.

The pitch variation from a standard 85 inches was a result of considerable in flight testing - sending the data to Sensenich - and having them suggest an increase in pitch to enable the engine to stay at redline 2700 in straight and level with W-O-T.

It's a question of what type of operation you plan for the aircraft, and for training in the Brumby it would appear smart to fine the pitch for better R-O-C and a slower cruise in the circuit.

happy days,
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