|
-
POSTING RULES
-
Donate yearly (please).
-
Advertise in here!
-
Today's Posts
|
Insert Pics
|
12-21-2018, 02:29 PM
|
|
|
|
Join Date: Feb 2018
Location: Ramona, CA
Posts: 175
|
|
If you were building a 7 again
What VS and rudder would you use? I do not plan on any intentional spins nor will I likely enter any unintentional spins. I will do some aerobatics and imo, the possibility of exceeding speed would be much more likely than entering a spin.
__________________
RV-7 builder Ramona, CA.
Free prop balancing for Vans owners
(I am not in the business of prop balancing, just as a courtesy to meet other owners.)
|
12-21-2018, 03:25 PM
|
 |
|
|
Join Date: Jul 2007
Location: Litchfield Park, AZ
Posts: 1,017
|
|
Quote:
Originally Posted by jask
What VS and rudder would you use? I do not plan on any intentional spins nor will I likely enter any unintentional spins. I will do some aerobatics and imo, the possibility of exceeding speed would be much more likely than entering a spin.
|
Correct me if I'm wrong but isn't there only one VS and rudder design for the 7? I do know that 7 VS/rudders were/are used on 6's.
__________________
Carlos in Arizona
EAA Chapter 538 www.chapters.eaa.org/eaa538
Wittman Tailwind W8 N53CH (built & sold)
Pazmany PL-1 N2029 (bought & sold)
RV7 - N537TC (reserved & building)
Emp, Wings & Fuse done - working on FWF
"The air is an extremely dangerous, jealous and exacting mistress. Once under the spell most lovers are faithful to the end, which is not always old age." - Winston Churchill
Last edited by pazmanyflyer : 12-21-2018 at 03:29 PM.
|
12-21-2018, 03:38 PM
|
|
|
|
Join Date: Feb 2018
Location: Ramona, CA
Posts: 175
|
|
The early kits had an 8 rudder and vans shifted to shipping kits with the 9 rudder.
__________________
RV-7 builder Ramona, CA.
Free prop balancing for Vans owners
(I am not in the business of prop balancing, just as a courtesy to meet other owners.)
|
12-21-2018, 03:57 PM
|
|
|
|
Join Date: Dec 2008
Location: League city, TX
Posts: 544
|
|
I would not mess with major flight control changes without talking to the mother ship. If you ended up in an unintentional spin it might not end well.
__________________
Mark Malone, RV7
Wings complete, SB 14 complied with, canopy and cowling in progress, Up on the gear.
N442MM reserved
http://www.mykitlog.com/MikeMike
2020 Donation gladly paid..
|
12-21-2018, 05:25 PM
|
|
|
|
Join Date: Feb 2018
Location: Ramona, CA
Posts: 175
|
|
I don't think vans really cares which one you use. The early kits were given the option of the larger rudder. Not mandated. You should consider that multiple failures of the vs/rudder on the 7 have occurred with the 9 rudder that of course were fatal.
__________________
RV-7 builder Ramona, CA.
Free prop balancing for Vans owners
(I am not in the business of prop balancing, just as a courtesy to meet other owners.)
|
12-21-2018, 06:06 PM
|
|
|
|
Join Date: Aug 2014
Location: Edmonton, AB
Posts: 216
|
|
I met a fellow who built a 6 (I think that's right) rudder and installed it on the 7. He seemed to like it as it had a less heavy feel on the pedals. However that being said, I do believe Vans designed the 7 rudder to be more safe to help with better spin recovery. So I personally recommend to stick with that. Safe flying benefits us all. That being said, He said it wasn't a big deal to change it out. Theoretically you could always build a second rudder and "Flight test" it.
As for the exceeding speed... Please read this accident report before you do anything. I always thought this report was a must read. http://www.bst-tsb.gc.ca/eng/rapport...8/a10o0018.asp
Last edited by Aero_Octaveus : 12-21-2018 at 06:15 PM.
|
12-21-2018, 06:13 PM
|
|
|
|
Join Date: Sep 2007
Location: Central IL
Posts: 5,514
|
|
Vans documented this in a service bulletin, SB02-6-1.
https://www.vansaircraft.com/pdf/ser...s/sb02-6-1.pdf
There are other threads on the physical comparisons between the two options.
__________________
Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
|
12-21-2018, 06:21 PM
|
 |
|
|
Join Date: Sep 2007
Location: WA
Posts: 988
|
|
stick with the kit unless you have a specific reason...
I have flown both extensively to the edges of the flight envelope... both work. I have posted previously on the differences. I prefer the -8 rudder but it is good to have some time with the -9 rudder first to gauge for yourself. Before paint, it only takes a day around 300 dollars to build an -8 rudder with attach hardware to swap out and fly. You also need a different VS cap. If I were to build another -7 it would be with a -8 rudder.
__________________
Stephen
RV7 powered by a lycoming thunderbolt IO-390
turning a whirlwind HRT prop
with more hours flying than building... 2,430 on the hobbs!
ORCA Flight
Race 771
margarita!
Last edited by schristo@mac.com : 12-21-2018 at 06:35 PM.
|
12-22-2018, 04:55 AM
|
 |
|
|
Join Date: Jan 2005
Location: Yorkshire, England
Posts: 2,048
|
|
Actually, I wouldn't build a 7....
Move on and build a 14 
__________________
"I add a little excitement, a little spice to your lives, and all you do is complain!" - Q
Donated in 2020
|
12-22-2018, 08:44 AM
|
 |
|
|
Join Date: Oct 2009
Location: Victoria, BC, Canada
Posts: 3,926
|
|
Quote:
Originally Posted by mike newall
Actually, I wouldn't build a 7....
Move on and build a 14 |
Even better... Pick up an abandoned -6 kit and build that instead. 
__________________
Rob Prior
1996 RV-6 "Tweety" C-FRBP (formerly N196RV)
|
| Thread Tools |
Search this Thread |
|
|
|
| Display Modes |
 Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT -6. The time now is 05:02 PM.
|
