VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics


Go Back   VAF Forums > Model Specific > RV-4
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #51  
Old 06-26-2017, 10:09 PM
Infidel's Avatar
Infidel Infidel is offline
 
Join Date: Sep 2011
Location: WV22
Posts: 792
Default

Quote:
Originally Posted by Capt View Post
I've been reading this thread with much interest. You guys might have just saved me so to speak. I have been looking for a while now for a 4 but have decided on an 8 for various reasons. I'm 220lbs (for you Yanks) & 6ft so the 4 might be rather limiting in many ways. So a conventional U/C 8 it is
Was a great read, thanks to those who know best
I'm curious what that dollar per pound will equate. I'm a -4 owner and have found myself slowly filling the cockpit in the past couple years. An -8 model is my goal but until my daughter no longer requires my $, I enjoy the heck out of my -4. You won't go wrong w/the -8.!
__________________
RV-4 0320\D3G 160, Whirlwind 200GA 70".
Reply With Quote
  #52  
Old 06-27-2017, 01:10 AM
Capt Capt is offline
 
Join Date: Feb 2017
Location: Australia
Posts: 47
Default

Hahah, I was only looking at a 4 due cost but am now thinking at what cost do I accept compromises? 8's are rare down under the place is mainly infected with 6 & 7A's Girl trainer planes
Reply With Quote
  #53  
Old 06-27-2017, 06:26 AM
Saville's Avatar
Saville Saville is offline
 
Join Date: May 2014
Location: KBVY Massachusetts
Posts: 671
Default

Quote:
Originally Posted by Capt View Post
I've been reading this thread with much interest. You guys might have just saved me so to speak. I have been looking for a while now for a 4 but have decided on an 8 for various reasons. I'm 220lbs (for you Yanks) & 6ft so the 4 might be rather limiting in many ways. So a conventional U/C 8 it is
Was a great read, thanks to those who know best
I think you made the right choice. When I was looking for a plane I was debating the -4 vs -8. -4's were much cheaper. But I chose the -8 because:

1. Given that I want to do a little light 2-up acro, the 8 was the better choice.

2. If you fully loaded the -4 with 2 pax and chutes and gas and baggage for an XC, you will exceed the gross weight limit and

3. I wanted a constant speed prop. This is heavier than the wooden props which the -4 was designed for. My inclinations could be done on a -4 but I would be driving it away from it's design point.

4. It was much easier to find a -8 with an O-360 and constant speed prop than it was to find a -4 with an O-320 and CS prop.

I'm very happy with my -8 and I think you will be too.
__________________
Flying RV-8 N880BC
Double the 2017 Dues - happily paid.
Reply With Quote
  #54  
Old 06-27-2017, 08:43 AM
Bill Dicus Bill Dicus is offline
 
Join Date: Jan 2005
Location: Shorewood, WI (Milwaukee area)
Posts: 1,053
Default SplitSimmelman

Of course you're right! I did mean split S. Thanks for the correction.
__________________
Bill Dicus
Shorewood (Milwaukee) Wisconsin
RV-8 N9669D Flying 12/4/14!
Flying Pitts S-2A, Piper Lance
Reply With Quote
  #55  
Old 06-27-2017, 02:28 PM
Bill Dicus Bill Dicus is offline
 
Join Date: Jan 2005
Location: Shorewood, WI (Milwaukee area)
Posts: 1,053
Default

The first ride in an RV for me was in a -4, flown by the builder who was both ex fighter pilot and aeronautical engineer. He felt linear projections made 4 G limits safe at our weight with two up (I'm only 155#). As to entry speeds my builder's manual (RV-8) lists these: Loops and horizontal eights 140-190 mph; Immelmann turns 150-190 mph; aileron and barrel rolls 120-190 mph; snap rolls 80-110 mph; vertical rolls 180-190 mph; split S 100-110 mph. Maneuvering speed for the -8 is 142 mph and for the -4 134mph. Vine 210 for the -4 and 230 for the -8, so entry speeds for the RV-4 would likely be adjusted. What does the builders manual for the RV-4 say? IIRC Van advised against snap rolls in RV's because he felt RV's were poorly suited for them, tending to wallow at slower entry speeds and risking overstress if entered faster trying to get a crisp entry. Have not done them in my RV-8 but they sure are fun in the Pitts, especially the S-1S.
__________________
Bill Dicus
Shorewood (Milwaukee) Wisconsin
RV-8 N9669D Flying 12/4/14!
Flying Pitts S-2A, Piper Lance
Reply With Quote
  #56  
Old 06-27-2017, 04:49 PM
Capt Capt is offline
 
Join Date: Feb 2017
Location: Australia
Posts: 47
Default

Quote:
Originally Posted by Saville View Post
I think you made the right choice. When I was looking for a plane I was debating the -4 vs -8. -4's were much cheaper. But I chose the -8 because:

1. Given that I want to do a little light 2-up acro, the 8 was the better choice.

2. If you fully loaded the -4 with 2 pax and chutes and gas and baggage for an XC, you will exceed the gross weight limit and

3. I wanted a constant speed prop. This is heavier than the wooden props which the -4 was designed for. My inclinations could be done on a -4 but I would be driving it away from it's design point.

4. It was much easier to find a -8 with an O-360 and constant speed prop than it was to find a -4 with an O-320 and CS prop.

I'm very happy with my -8 and I think you will be too.
Thanks for yr thoughts.
As we all know anything to d with aviation is a compromise, it's just how much one is willing to compromise is where the choice is. As much as I wanted a 4 & after doing some research among these pages I have now left that idea behind & dreaming of double the fun (at twice the cost here, if I find one !)
Reply With Quote
  #57  
Old 07-03-2017, 06:03 AM
smokyray's Avatar
smokyray smokyray is offline
 
Join Date: Jan 2005
Location: TX32
Posts: 1,599
Default No substitute...

Quote:
Originally Posted by Capt View Post
Thanks for yr thoughts.
As we all know anything to d with aviation is a compromise, it's just how much one is willing to compromise is where the choice is. As much as I wanted a 4 & after doing some research among these pages I have now left that idea behind & dreaming of double the fun (at twice the cost here, if I find one !)
The first RV4 I saw was a photo in an early Kitplanes in a magazine pile in our F16 Pilot lounge in Japan. Back then Vans was a small backyard company in North Plains
In 89" when I ordered my RV4 information kit you couldn't buy an RV4, you had to build it. I was looking for a 180mph Super Cub that could do an occasional roll or loop, get off my 1100" grass strip and carry a bit of camping gear. The Vans info kit stressed the RV4 was a compromise to achieve "total performance."
25 years later my 4 is still flying with over 2000 hours, and an RV6X and HR2 were added. Compromises aside, it's a great little airplane...

V/R
Smokey
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 12:34 PM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.