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Old 06-19-2016, 08:36 PM
runstrong92 runstrong92 is offline
 
Join Date: Jun 2011
Location: Carthage, Mississippi
Posts: 26
Default Whirlwind prop performance

I've been running a Sterba 68x74 on my 160hp RV-4 but will soon be swapping over to a GA200L from Whirlwind. Just curious what kind of performance increases have been seen by others who have made a similar swap.
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  #2  
Old 06-20-2016, 06:03 AM
judoka5051 judoka5051 is offline
 
Join Date: Aug 2010
Location: McAlpin, FL
Posts: 253
Default Get ready for a big gain!

It will take a little fiddling, but once you have it dialed in... In my case I swapped from a sensenich cruise prop to the whirlwind. The plane cruised a little faster and climbed like crazy. Start with the coarsest pitch on the chart. I ended up going 1.5 coarser to get 2700 at 9000ft.
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Lance Logan
McAlpin, FL
Plane at FL10

Scratchbuilt Biplane
Preceptor N3 - Sold
Zenith Zodiac 601HD - Sold (good riddance)
Kitfox IV - Sold my share, but loved that plane
RV8A Sold! Loved the plane, but not the nosewheel!
RVX (RV6/4) Sold
Cherokee 180 pickup truck
RV8 Fastback
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