RV-4 or RV-8

panhandler1956 · #1 06-09-2006, 06:32 PM

Sorry I am a newbie and I know this has been posted before. But I am having a really tough time deciding on which airplane to build. I was really set on the -4, but now I'm not so sure. I am 160lbs and 5'8" and my wife is 110lbs so I definatley fit in the -4.
I guess I should mention that I plan to use it mostly for fun, not alot of XC or IFR but some, will be doing acro and formation work. Here what I have learned but I need more of a push (I have flown neither airplane):

RV-4
-better handling (according to some)
-better looks (sorry guys, imho)
-slightly cheaper build? Although harder with only wings pre-punched
-slightly better short field performance (might be an issue if I try to use my farm as home base)

RV-8
-better cross-country mount
-easier to set-up IFR (more panel space)
-more baggage
-easier build (pre-punched)
-better re-sale (although I plan to keep it)
-slightly faster (but looks slower - sorry -8 guys)
-seems like more builders out there, so you would like have more support
-not likely to be abandoned by the factory during my build time as I plan to buy the kit in sections $$$$.

I hate to spend 5 yrs buiding a std build and find out that I should went with the latest and greatest design!
Brent Owens
Columbus, OHIO

N941WR · #2 06-09-2006, 06:46 PM

Brent,

I'm building a -9 so I don't have a dog in this fight. Still, I'll give you my $.02 worth.

It comes down to what type of flying you like to do. If you are really want to do acro and weekend local flying, the -4's the ticket.

If you like to do some acro and want to take longer trips with someone in the back, get the -8.

My first RV ride was in the back of a -4 and I just didn't fit. 6' tall and 200 lbs. I was hunched over with my sholders squished forward for the flight and the pilot commented about the extra weight in the tail.

Speed and landing distances are so close I would call them a wash. The first depends on the engine and the second on the pilot.

Starting on my 3rd year of building the -9, which is supposed to be a better kit than the -8 (Note, I did not comment on the plane, only the quality of the kit as Van's continues to improve with each new model.), I can't imagine building a -3,4, or 6. My hat is off to those who did all that work.

I think that the hours spent building the early kits are now spent in the panel and finishing. That's why there are more DVFR -6's than DVFR -7's. Again, IMHO.

Best of luck.

13brv3 · #3 06-09-2006, 07:08 PM

Hi Brent,

My advice would be to go with the -8 if you're buying a new kit. I can't believe Van's still sells the -4, but it looks like they do. I sure bet they don't sell many these days.

I don't think there are any significant advantages to the -4, except for the looks that you seem to prefer.

You mentioned resale, but I don't think you mentioned it with enough emphasis. If you take a quick look at Barnstormers, you'll see that the average -8 is being sold for nearly double what the average -4 is selling for. You can see that there's not much difference in the price of the kits, and you DO get a lot of benefits for the extra money. Van's latest kits are really sweet!

With the resale in mind, if you would be happy with a -4, you can probably buy a nice one already flying, and for less than you'll spend on a new one. There are some real deals on unfinished projects as well, but beware of missing and damaged parts.

Good luck,
Rusty

DeltaRomeo · #4 06-09-2006, 07:42 PM

Hey Brent,

The RV-4 is more fun to fly if you want to be 'part of the plane'. Everyone at Van's says this.
The RV-8 is MUCH easier to build and flies *mostly* like a RV-4.

Like others said....depends on what you want to do with it.

I'll finish with this....if Van's offered a completely match-drilled RV-4 I'd order a kit tomorrow.

b,
d

szicree · #5 06-09-2006, 11:38 PM

I'm not sure, but there may be some confusion regarding the differences between unpunched, prepunched and match-drilled.

The 4 has no holes at all except for the wing skins if I remember correctly. This means lots of time spent laying out holes and jigging EVERYTHING.

I believe that prepunched simply refers to holes in skins mostly, but things still need to be jigged.

Match-drilled means you can just cleco things together on a table and get to rivetting. This is a HUGE deal.

I recently got a peak at the plans for a 7 and the comparison to the plans for my 4 was pretty striking. However, the 4 IS the coolest rv, so if you're up to the task, go for it.

Steve Sampson · #6 06-10-2006, 01:09 AM

Brent - I made this decision last year. I went with the -4 and have no regrets. Havn't flown it yet though! Your query comes up from time to time so I have started collected my reasons together. You can read them at http://gikonwhy4.blogspot.com/ You will see runway length was important though, so is handling. Without the runway issue it would have beena trade between ease of build, and delight to fly.

There are a few things you need to know if you are going to build a -4 which no one tells you. I have tried to summarise those here http://gikoncnsdr.blogspot.com/ Look for the first entry dated 24 May.

Good luck with your decision!
Steve
#4478
G-IKON
UK

panhandler1956 · #7 06-10-2006, 04:34 AM

Quote:

Originally Posted by szicree

I'm not sure, but there may be some confusion regarding the differences between unpunched, prepunched and match-drilled.

The 4 has no holes at all except for the wing skins if I remember correctly. This means lots of time spent laying out holes and jigging EVERYTHING.

I believe that prepunched simply refers to holes in skins mostly, but things still need to be jigged.

Match-drilled means you can just cleco things together on a table and get to rivetting. This is a HUGE deal.

I recently got a peak at the plans for a 7 and the comparison to the plans for my 4 was pretty striking. However, the 4 IS the coolest rv, so if you're up to the task, go for it.

Steve,
Thanks for that clarification, I was confused on that. I went to Van's website and I see what you mean. All my friends are saying -8, and based on this poll, I'm leaning that way. I am a first time builder, but I do have some experience restoring/re-building experimentals, but no metal experience so the -8 kit definately sounds more practical for me, heck maybe I should do the -7 -, just kiddin' - It's a nice airplane though (-7), actually prettier than the -8 im my opinion!!

Brent

rv8ch · #8 06-10-2006, 05:30 AM

Some more points to consider:

RV8: cool slider canopy, wider range of engine choices, stronger landing gear

RV4: smaller (less hangar space), cheaper engine (320)

I personally would have built the RV3 if it had the matched hole or the QB option.

I think my next plane will be a twin:

Brian Denk · #9 06-10-2006, 01:22 PM

Quote:

Originally Posted by rv8ch

Some more points to consider:

RV8: cool slider canopy, wider range of engine choices, stronger landing gear

RV4: smaller (less hangar space), cheaper engine (320)

I personally would have built the RV3 if it had the matched hole or the QB option.

I think my next plane will be a twin:

Man, this is one TINY airplane...the French "Cri-Cri" I think it's called. But it's missing something.....maybe the white flag on the tail. *rimshot*

Like I've told MANY Rv'ers and Van's folks directly, PRE-PUNCH THE RV-3 and you'll sell em by the dozens. I think Jay Pratt said a few years ago at LOE that he would, indeed, buy a dozen, build them and sell them like hotcakes.

As for the root question of this thread, the -8 is a tweaked and up-sized -4 that Van saw as being necessary to suit the modern man desiring a tandem airplane kit. I agree the -4 is a more mission specific airplane (pure sport flying) whereas the -8 suits the traveling mission much better, while still allowing acro.

RatMan · #10 06-10-2006, 06:47 PM

Quote:

Originally Posted by szicree

I believe that prepunched simply refers to holes in skins mostly, but things still need to be jigged.

Match-drilled means you can just cleco things together on a table and get to rivetting. This is a HUGE deal.

Not to be confused with "match-drilled", the standard -8 wings and emp is "match-hole" as Vans calls it. "RV-7/7A and RV-9/9A Standard Kits are completely matched-hole. RV-8/8A kits include matched-hole empennages and wings, along with pre-punched skins on the fuselage."

Yes it is easier to build than the -4, it's not quite as easy as clecoing things together and get to riveting. You have to cleco things together, match drill them, take everything back apart, deburr, dimple, prime if needed, clecko back together then get to riveting.

The fuse isn't match hole'd but the skins are prepunched. It must be jigged and drilled.

Building ANY airplane is a huge undertaking that is often down-played by those that have or are building. The -3 or -4 are for serious builders. My hat is off to those that have or are doing it.