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RV7A vs RV9A

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rafael(at)gforcecable.com
Guest

Posted: Wed May 09, 2007 4:19 pm Post subject: RV7A vs RV9A

Although I’ve been flying for over 29 years, I’m about to become a new builder.  I’m evaluating the merits of the RV9A and the RV7A.  My interests are for an airplane that would carry my wife and I on trips from South Carolina to the Midwest and occasionally to the West coast.  Aerobatics are not a priority, although, if I build the 7, I would like to dip my toe into this type of flying.  

   

A couple of questions:  

   

Which airplane makes a better IFR platform?   I imagine that the 9 would probably be less responsive (more stable?).  Would the 7 behave better in the bumps (higher wing loading).    

   

If I build the 7, the 180hp, not available in the 9, would get you higher faster.  

   

For the long trips, I would like to add fuel capacity.  What’s the added cost and weight of adding tip tanks?  I’ve heard of 8.5 gal, giving 55 gal total.  Would putting tip tanks on the 7 limit its aerobatic capabilities?  

   

This is my first post, so please let me know if this is the kind of questions appropriate for this forum.  

   

Thanks and best regards,  

   

Rafael  

   

       [quote][b]

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klwerner(at)comcast.net
Guest

Posted: Wed May 09, 2007 4:41 pm Post subject: RV7A vs RV9A

Although I’ve been flying for over  29 years, I’m about to become a new builder.  I’m evaluating the merits of  the RV9A and the RV7A.  My interests are for an airplane that would carry  my wife and I on trips from South Carolina to  the Midwest and occasionally to the West  coast.  Aerobatics are not a priority, although, if I build the 7, I would  like to dip my toe into this type of flying.

 [quote]      

A couple of    questions:   

    

Which airplane makes a better IFR    platform?   I imagine that the 9 would probably be less responsive    (more stable?).  Would the 7 behave better in the bumps (higher wing    loading).     

**The -9    would be better for IFR.    

    

If I build the 7, the 180hp, not    available in the 9, would get you higher faster.   

**Maybe, but not by much, I    would say. The -9 has a pretty efficient wing.   

    

For the long trips, I would like    to add fuel capacity.  What’s the added cost and weight of adding tip    tanks?  I’ve heard of 8.5 gal, giving 55 gal total.  Would putting    tip tanks on the 7 limit its aerobatic    capabilities?   

**I don't    think that there are commercially available wingtanks available on the    -9.  I have a Johanssen set for my -6, and I wondered if I should    rig one for gas/endurance, and the other for the effects longer endurance has    on a humans bladder, if you get my drift          

    

This is my first post, so please    let me know if this is the kind of questions appropriate for this    forum.   

**Yes, it sure is appropriate.     At least this one has to do with RV related information, which many    other post do not anymore.    

    

Thanks and best    regards,   

Rafael   

Enjoy the    journey, and  welcome! 

[b]

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John Brunke

Joined: 10 Jan 2006
Posts: 43

Posted: Wed May 09, 2007 6:14 pm Post subject: RV7A vs RV9A

Rafael,

  

 Welcome to the list.   If aerobatics are  not a priority have you looked at the RV10?  Very roomy with a baggage door  that makes loading

 a breeze.   Just flew down to Sun and Fun  from the Chicago area in a friend's -10.   Basically 5 hours flight  time each way with a fuel/bladder stop.  Loads of panel space for whatever you want to put in there.   

  

 I'm building an RV7.  Although I will take the  occasional long trip with my wife, I mainly want it to go out and play.   You can do rolls

 all day long and more high G manuevers if you feel  the need.   For me the tail wheel has a lot of appeal since it is  different from

 anything else I've ever flown.    It  is slightly more challenging because it's different.  Not any harder, just  different.

  

 The best part of all this is you have lots of  choices.   It all depends what you really want to do.  There's  also a lot of information out

 on the web.   Some make it sound like  their way is the only way.   As a builder, you can do what is  comfortable for you, financially

 and safety wise.

  

 Best of luck on your project,

 John Brunke

 St. Charles, IL

 RV7 tip-up in progress

  

 [quote]   ---

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jclarkmail(at)gmail.com
Guest

Posted: Wed May 09, 2007 7:12 pm Post subject: RV7A vs RV9A

Rafael,



Where is SC  are you?



If you are ever in the Columbia area, we probably can arrange for you to see an RV9A, RV6's, maybe RV7A, several RV7s under construction, an although you did not reference such maybe an RV4 under construction and an RV10 just getting started. Probably could rustle up a ride as well. 



Now to your questions ... I think you have received good answers already but ask yourself the following ...

1. Will MOST of my flying be cross-country?

2. Will I EVER want to do aerobatics?



Both planes fly quite nicely. The stick forces on the 9(A) is a bit "heavier" as you get farther into the roll to one side or the other but it still flies "like an RV". 



James

On 5/9/07, Rafael <rafael(at)gforcecable.com (rafael(at)gforcecable.com)> wrote:[quote]                 

Although I've been flying for over 29 years, I'm about to become a new builder.  I'm evaluating the merits of the RV9A and the RV7A.  My interests are for an airplane that would carry my wife and I on trips from South Carolina to the Midwest and occasionally to the West coast.  Aerobatics are not a priority, although, if I build the 7, I would like to dip my toe into this type of flying.  

   

A couple of questions:  

   

Which airplane makes a better IFR platform?   I imagine that the 9 would probably be less responsive (more stable?).  Would the 7 behave better in the bumps (higher wing loading).    

   

If I build the 7, the 180hp, not available in the 9, would get you higher faster.  

   

For the long trips, I would like to add fuel capacity.  What's the added cost and weight of adding tip tanks?  I've heard of 8.5 gal, giving 55 gal total.  Would putting tip tanks on the 7 limit its aerobatic capabilities?  

   

This is my first post, so please let me know if this is the kind of questions appropriate for this forum.  

   

Thanks and best regards,  

   

Rafael  

   

       [quote][b]  http://www.matronics.com/Navigator?RV7-List http://forums.matronics.com james(at)nextupventures.com .

  [quote][b]

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cnpeters

Joined: 24 Aug 2006
Posts: 23
Location: Bloomington/Normal, IL

Posted: Thu May 10, 2007 7:21 pm Post subject: RV7A vs RV9A

Both will give you immense joy. Last year, I pondered the same Q's. Both 

have the same fuselage, but empennage and especially the wings are 

different.

That being said...



RV-9 pros - Perhaps a little more stable IFR platform. Better glide 

ratio. Lands at lower trainer like speeds. Personally, I like the 

aesthetics of the longer wing. Largest engine (O-320/150-160hp) is 

ubiquitous on the used (and new) market.



RV-7 pros - Aerobatics of the "gentleman" type. This was my biggest 

hurdle - do I potentially want to do some down the road?? I decided not, 

but you always have the potential with the -7 (though I know folks who 

have admitted doing rolls and even loops in the -9, but great care is 

needed to avoid overloading the frame as with any utility category 

craft). A little faster with a bigger engine, but also a little more 

fuel burn for that increased speed (research I've done shows a slightly 

throttled back RV-7/O-360/180hp flying the same speed as an 

RV-9/O-320/160hp will have almost the exact fuel burn. This was also 

corroborated by a Van's engineer to me. Dan Checkoway's wonderful 

machine excepted : ) ). Bigger engine choices - though not really a big 

deal.  Quite  a few RV-9's with O-360's - just be very cognizant of Vne. 

Possible resale advantage with the RV-7 due to higher popularity and 

aerobatic capability.



I chose the -9 for a cross-country platform and lack of interest in 

aerobatics, and frankly I like its looks more with the higher stance on 

the tri-gear and longer wing. Really try and get a ride in each, and 

play with some aerobatics in the -7. If there is a chance you want to 

yank and bank, your decision is made (though a demo ride in a -9 showed 

it could be jerked around just fine short of defined aerobatics). As an 

IFR platform, a good autopilot will help for the small decrease in 

stability - many folks have used their -7's IFR/Xcountry successfully.



Carl

RV-9A wings

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_________________
Carl Peters
RV-9A wings

rafael(at)gforcecable.com
Guest

Posted: Fri May 11, 2007 3:46 am Post subject: RV7A vs RV9A

Thank you very much for this and other replies to my inquiry.



Carl's statement, "just be very cognizant of Vne" raised my eyebrows a bit.

I looked for Vne numbers for the 7A and the 9A in Van's website, but could

not find them.



Does anyone have the Vne numbers on the 7A and 9A.



Best regards,



Rafael

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pwatsonfnp(at)comcast.net
Guest

Posted: Fri May 11, 2007 5:30 am Post subject: RV7A vs RV9A

RV7 Vne is 230mph. Not sure about the9.



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retasker(at)optonline.net
Guest

Posted: Sat May 12, 2007 5:48 pm Post subject: RV7A vs RV9A

I don't know what it is for the 9/9A, but it has to be higher than your 

number as the top speed (solo) with a 160hp engine is listed as 

197mph.on Van's website.  I am quite sure that Van would not list a top 

speed higher than Vne!



Dick Tasker



William Bell wrote:



 	  Quote: 	
		   



 I am building an RV-7A and the Vne speeds can be found in the  

 construction manual in Section 15, Final Inspection and Flight Test,  

 in the Flutter Testing paragraphs.  Mine are on page 15-20 although  

 the pages could be different for other manuals.  According to the  

 construction manual, RV 7/7A/8/8A the Vne is 230 statute miles per  

 hour and 190 statute mph for  the RV-9A. 


	




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rafael(at)gforcecable.com
Guest

Posted: Sun May 13, 2007 5:00 am Post subject: RV7A vs RV9A

James,  

   

I’m in Aiken, SC.  I would absolutely love to take a look at the projects and would gladly pay all expenses for a ride in an RV.  I’m retired, so any time any day is convenient for me.  

   

My decision once more changes to the 9A over the 7A.  Last night a voice kept telling me:  Keep It Simple Stupid!  After running a spread sheet with the number$, a 9A with a fixed pitch prop, and an O-320 engine would plenty of airplane for me.  

   

My cell # (803)292-7410  

   

         

  

From: owner-rv7-list-server(at)matronics.com [mailto:owner-rv7-list-server(at)matronics.com] On Behalf Of James Clark

 Sent: Wednesday, May 09, 2007 11:12 PM

 To: rv7-list(at)matronics.com

 Subject: Re: RV7A vs RV9A  

  

   

Rafael,

 

 Where is SC  are you?

 

 If you are ever in the Columbia area, we probably can arrange for you to see an RV9A, RV6's, maybe RV7A, several RV7s under construction, an although you did not reference such maybe an RV4 under construction and an RV10 just getting started. Probably could rustle up a ride as well. 

 

 Now to your questions ... I think you have received good answers already but ask yourself the following ...

 1. Will MOST of my flying be cross-country?

 2. Will I EVER want to do aerobatics?

 

 Both planes fly quite nicely. The stick forces on the 9(A) is a bit "heavier" as you get farther into the roll to one side or the other but it still flies "like an RV". 

 

 James

 

     

On 5/9/07, Rafael <rafael(at)gforcecable.com (rafael(at)gforcecable.com)> wrote:      

Although I've been flying for over 29 years, I'm about to become a new builder.  I'm evaluating the merits of the RV9A and the RV7A.  My interests are for an airplane that would carry my wife and I on trips from South  Carolina to the Midwest and occasionally to the West coast.  Aerobatics are not a priority, although, if I build the 7, I would like to dip my toe into this type of flying.  

   

A couple of questions:  

   

Which airplane makes a better IFR platform?   I imagine that the 9 would probably be less responsive (more stable?).  Would the 7 behave better in the bumps (higher wing loading).    

   

If I build the 7, the 180hp, not available in the 9, would get you higher faster.  

   

For the long trips, I would like to add fuel capacity.  What's the added cost and weight of adding tip tanks?  I've heard of 8.5 gal, giving 55 gal total.  Would putting tip tanks on the 7 limit its aerobatic capabilities?  

   

This is my first post, so please let me know if this is the kind of questions appropriate for this forum.  

   

Thanks and best regards,  

   

Rafael  

   

   	  Quote: 	
		    http://www.matronics.com/Navigator?RV7-Listhttp://forums.matronics.comjames(at)nextupventures.com .



    	
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