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  #1  
Old 05-03-2016, 03:52 PM
rv8gibbo rv8gibbo is offline
 
Join Date: May 2012
Location: Maitland, Australia
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Default 74" Hartzell on an RV-8
Hi Guys,
I'm in the process of ordering an engine and prop for my 8 and I know this question has probably been asked in the past but I'm after last minute Pro's - con's, performance (if any) reasons for or against buying a 74" prop for my RV-8.

Many Thanks
Gibbo
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  #2  
Old 05-03-2016, 05:24 PM
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skylor skylor is offline
 
Join Date: Aug 2009
Location: Southern California
Posts: 877
Default 74" Hartzell
Quote:
Originally Posted by rv8gibbo View Post
Hi Guys,
I'm in the process of ordering an engine and prop for my 8 and I know this question has probably been asked in the past but I'm after last minute Pro's - con's, performance (if any) reasons for or against buying a 74" prop for my RV-8.

Many Thanks
Gibbo
I'm running the 74" BA prop on my RV-8 with IO-360-A1B6 (F7497 blades). I have been very happy with this combination. My original reasoning for going with the 74" prop is that the blades can be trimmed to 72" diameter if required for repair, whereas Hartzell does not permit trimming of the 72" prop blades.

I have been extremely happy with the performance. Climb performance is phenomenal, cruise performance is good, and I'm happy with the race speeds this combination gave me at the Reno Air Races last year.

Skylor
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  #3  
Old 05-03-2016, 06:55 PM
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Ironflight Ironflight is offline
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Join Date: Jan 2005
Location: Dayton, NV
Posts: 12,243
Default
Quote:
Originally Posted by skylor View Post
I'm running the 74" BA prop on my RV-8 with IO-360-A1B6 (F7497 blades). I have been very happy with this combination. My original reasoning for going with the 74" prop is that the blades can be trimmed to 72" diameter if required for repair, whereas Hartzell does not permit trimming of the 72" prop blades.

I have been extremely happy with the performance. Climb performance is phenomenal, cruise performance is good, and I'm happy with the race speeds this combination gave me at the Reno Air Races last year.

Skylor
1800+ hours on the 74" BA on the Valkyrie - same experience. (Except for the Reno racing of course....)
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RV-8 - N188PD - "Valkyrie"
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  #4  
Old 05-04-2016, 10:21 AM
Skysailor Skysailor is offline
 
Join Date: May 2011
Location: Atlanta, GA
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I am running a 74" Hartzell on my RV4 with no issues.
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  #5  
Old 05-04-2016, 10:26 AM
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drill_and_buck drill_and_buck is offline
 
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Location: Bridgewater, MA - KPYM
Posts: 457
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Same as above, 74" with Grove gear. No issues other than hearing complaints from my fellow pilots about flying too fast
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RV-8 N468RV
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  #6  
Old 05-04-2016, 03:51 PM
rv8gibbo rv8gibbo is offline
 
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Location: Maitland, Australia
Posts: 91
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Many thanks for the reply's I've just ordered the 74"
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