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  #1  
Old 05-12-2011, 09:59 AM
whd721 whd721 is offline
 
Join Date: Oct 2007
Location: Beaverton, OR
Posts: 232
Default RV-9A W&B

Can anyone Point me to or share a RV9A W&B Spreadsheet with an O-235 engine. I hope to find one "built Light" with a listing of installed equipment. Any tips for adding lightness would be greatly appreciated.
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whd721
RV9A
Sherwood, Oregon
As Bill Stout (designer of the Ford Trimotor) used to say, ?Simplicate and add Lightness?
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  #2  
Old 05-13-2011, 01:34 AM
RetiredRacer RetiredRacer is offline
 
Join Date: Apr 2009
Location: Ipswich QLD Australia
Posts: 245
Default 893 lb 9a

Whd, if you check out http://www.vansaircraft.com/public/flights.htm , and scroll down to the 12th report. You will find our first flight report, with some details of our aircraft.
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  #3  
Old 05-13-2011, 11:45 AM
novipilot novipilot is offline
 
Join Date: Jul 2010
Location: Novi, MI & Venice, FL
Posts: 66
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This thread got me to thinking: Does Van's supply the W&B envelope for his aircraft? One thing to calculate W&B, another to have the boundaries of the envelope.
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  #4  
Old 05-13-2011, 12:06 PM
gasman gasman is offline
 
Join Date: Mar 2007
Location: Sonoma County
Posts: 3,821
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Quote:
Originally Posted by novipilot View Post
This thread got me to thinking: Does Van's supply the W&B envelope for his aircraft? One thing to calculate W&B, another to have the boundaries of the envelope.
Yes..........................................
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  #5  
Old 05-13-2011, 01:57 PM
whd721 whd721 is offline
 
Join Date: Oct 2007
Location: Beaverton, OR
Posts: 232
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Van's provides a W&B form with examples of various loadings of fuel, people and baggage along with a fore and aft CG range. All good.

But the example does not state which engine/Prop/spacer/panel/interior were used. Without an example close to your personal RV9 concept or a spreadsheet with components and moment arms it is difficult to forecast your empty CG location. Weighing the completed project at the end is not very flexible.

Install an O-360 in a RV9A and most optional items should move aft, Install a O-235 and things should move forward. But how much?
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whd721
RV9A
Sherwood, Oregon
As Bill Stout (designer of the Ford Trimotor) used to say, ?Simplicate and add Lightness?
Reply With Quote
  #6  
Old 05-13-2011, 02:15 PM
gasman gasman is offline
 
Join Date: Mar 2007
Location: Sonoma County
Posts: 3,821
Default

Quote:
Originally Posted by whd721 View Post
Van's provides a W&B form with examples of various loadings of fuel, people and baggage along with a fore and aft CG range. All good.

But the example does not state which engine/Prop/spacer/panel/interior were used. Without an example close to your personal RV9 concept or a spreadsheet with components and moment arms it is difficult to forecast your empty CG location. Weighing the completed project at the end is not very flexible.

Install an O-360 in a RV9A and most optional items should move aft, Install a O-235 and things should move forward. But how much?
This is part of the educational process........ Do you want answers to all of the questions??..........
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  #7  
Old 05-14-2011, 07:46 AM
whd721 whd721 is offline
 
Join Date: Oct 2007
Location: Beaverton, OR
Posts: 232
Default

Not all--- Just Most.
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whd721
RV9A
Sherwood, Oregon
As Bill Stout (designer of the Ford Trimotor) used to say, ?Simplicate and add Lightness?
Reply With Quote
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