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View Poll Results: RV4 or RV8 or RV7
VANS RV4 7 11.48%
VANS RV8 48 78.69%
VANS RV7 6 9.84%
Voters: 61. You may not vote on this poll

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  #1  
Old 04-14-2017, 01:50 AM
giles1206 giles1206 is offline
 
Join Date: Apr 2017
Location: UK
Posts: 8
Question RV8 or RV4...want to buy an RV8

Gentlemen! Experience is key & knowledge is king, & some of you may have both so please help me make this decision as I have neither!

We are looking for a fun, fast, aerobatic with 2 up with half an hour fuel at least. We are not the smallest animals weighing in at 100kg each!

So I put it to you, what is it I need to buy? An RV4 or RV8? Prefer the tandem arrangement over side by side however not adverse to being told otherwise. Can you please all help me make a decision to which model path I should go down.

If anyone hears or knows of any good strong well built VANS RV4 or RV8 around for sale with 180 - 200+ hp IO-360+ engine with full inverted fuel & oil system & CS prop & preferable with full dual controls with instruments in the rear cockpit as well. That would be greatly appreciated. I want to buy an RV as soon as possible. Please help me & please help me find a good one.

Thank you for your help on this one! It's who you know not what you know!

Animal
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  #2  
Old 04-14-2017, 04:31 AM
N661DJ N661DJ is offline
 
Join Date: Feb 2006
Location: Winter Haven
Posts: 272
Default RV8

Check your PM's
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  #3  
Old 04-14-2017, 06:13 AM
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Saville Saville is offline
 
Join Date: May 2014
Location: KBVY Massachusetts
Posts: 661
Default

If you want two-up acro then go with the -8.

An RV-4 with a -360, constant speed prop and inverted oil is going to be heavy. I've seen it done but it takes the -4 far away from its design point.

Go to the Van's pages and record the gross weights and acro weights of the planes. Then figure in your additional weights of two up, the CS prop, the inverted oil, parachutes and gas.

See what you get.
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Last edited by Saville : 04-14-2017 at 06:15 AM.
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  #4  
Old 04-14-2017, 07:47 AM
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acam37 acam37 is offline
 
Join Date: Aug 2012
Location: Lufkin Tx
Posts: 564
Default

I've owned both. What you need is the RV-8. The -4 is much better for aerobatics but with 2 heavy people it's not recommended.
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  #5  
Old 04-14-2017, 09:56 AM
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Mark Albery Mark Albery is offline
 
Join Date: Jul 2007
Location: Redwood City CA
Posts: 530
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You would be well advised to stick to Van's weight and CG recommendations for aerobatics especially.

Aero gross is 1350lb for the -4 and 1600lb for the -8. Even accounting for the -8 being typically 100lb heavier than a -4, that still gives it an extra 150lb of aerobatic payload. The largest passenger that I've rotated about all axes in the -4 was a 10 year old as a birthday treat. With the -8 it stayed in limits with a 180 lb passenger.

A typical passenger will also put the -4 behind the aft CG acro limit and make it very light in pitch and easy to over stress in a pull-up, especially in less experienced hands.
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  #6  
Old 04-14-2017, 10:41 AM
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KatieB KatieB is offline
 
Join Date: Jun 2010
Location: Shelbyville, TN (KSYI)
Posts: 1,025
Default

I'm far from a gentleman, but voted anyhow. We owned an -8 and it's quite roomy in the back. A 220 pounder (100 kilogrammer?) won't fit in the back of the -4, especially for acro.
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  #7  
Old 04-15-2017, 07:19 AM
Robert Anglin Robert Anglin is offline
 
Join Date: Mar 2008
Location: houston, texas
Posts: 641
Default Sure!

An 8 or an 8 or an 8 or so on. The 8 will take two 200 pounders and do some aero, when loaded properly. It has two good baggage compartments 50 Lbs. in front and 75 Lbs. in the back. It will take 42 Gal. of fuel with standard tanks.
If you get a nice lite one with the empty C.G. as close to the front as you can, you can load well over 750 Lbs. of useful and stay in C.G. and weight for C.X. trips "not aero", ours can load 792 Lbs. useful. For that you need to understand how much weight and where the aft limits of the C.G. are, but yes at under 1550 with the older wings and 1600 Lbs. with the new wings and careful C.G. loading you can do this with in reason. For what you are asking the 8 would be a better fit for your needs.
Hope this helps, Yours, R.E.A. III #80888

Last edited by Robert Anglin : 04-16-2017 at 08:24 AM. Reason: My bad, need to review my P.O. H. B. form time to time.
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  #8  
Old 04-15-2017, 08:50 PM
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RV8JD RV8JD is offline
 
Join Date: Jan 2005
Posts: 321
Default RV-8/8A Aerobatic Gross Weight

Quote:
Originally Posted by Robert Anglin View Post
... but yes at under 1600 with the older wings and 1650 Lbs. with the new wings and careful C.G. loading you can do this with in reason.
Re: Aerobatic Gross Weight for the RV-8/8A. Just to be accurate, "1600" above should be "1550" (early wings), and "1650" above should be "1600" (Dash One wings).

The Maximum Gross Weight for both wing variants is the same at 1800 pounds.
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Last edited by RV8JD : 04-15-2017 at 09:59 PM.
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  #9  
Old 04-16-2017, 05:31 AM
WAM120RV WAM120RV is offline
 
Join Date: Dec 2006
Location: Coventry. England
Posts: 560
Default Weight

Hi

As the others have said forget the 4 even though it's th best flyer of all three because it cannot carry the weight for aerobatics you are looking for.

Then is a choice of SBS or tandem seating, it's your choice.
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In completion stage of Loehle P5151
Built and now Flying G.BVLR Vans RV4
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  #10  
Old 04-16-2017, 08:22 AM
Robert Anglin Robert Anglin is offline
 
Join Date: Mar 2008
Location: houston, texas
Posts: 641
Default Thanks

Quote:
Originally Posted by RV8JD View Post
Re: Aerobatic Gross Weight for the RV-8/8A. Just to be accurate, "1600" above should be "1550" (early wings), and "1650" above should be "1600" (Dash One wings).

The Maximum Gross Weight for both wing variants is the same at 1800 pounds.
Thanks Carl, You are right on the money. R.E.A. III
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