VansAirForceForums  
Home > VansAirForceForums

-POSTING RULES
-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.


Go Back   VAF Forums > Model Specific > RV-8/8A
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 12-17-2020, 12:10 PM
vomatic vomatic is offline
 
Join Date: Mar 2008
Location: Iowa
Posts: 45
Default Vertical Stabilizer Alert - Drawing 27A

I was talking to Van's today and we got on the topic of the vertical stabilizer. Kevin Miller encouraged me to share with EVERYONE to look at drawing 27A before fitting your VS and specifically the VS-702 TRIM DETAIL in the lower left corner. The drawing calls for the removal of 5/8" of material from VS-702. DON'T DO THAT.

Instead, fit the VS and remove only the amount needed to fit, if any. Removing 5/8" of material is probably too much and will likely require you to fabricate a doubler to add back what you just removed.

Hope that helps.....and arrives in time for everyone.
Attached Thumbnails
Click image for larger version

Name:	27A.pdf
Views:	605
Size:	123.5 KB
ID:	5815  
__________________
David
RV-8 QB
Thunderbolt M1B - On Order
Tail - Done
Fuselage - In Process
Reply With Quote
  #2  
Old 12-17-2020, 05:14 PM
wirejock's Avatar
wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
Posts: 5,493
Default New mount

Yep. Common problem on the 7 as well. I encourage builders to search for part numbers before cutting critical components. I cut less and still had to make a new F781
__________________
Larry Larson
Estes Park, CO
E-mail: wirejock at yahoo dot com
Builder Blog: http://wirejockrv7a.blogspot.com
Donated 12/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
Reply With Quote
  #3  
Old 12-17-2020, 06:35 PM
VA Maule VA Maule is offline
 
Join Date: Apr 2016
Location: Bucking ham, Virginia
Posts: 297
Default

Yep that instruction to trim got me too about 18 months ago. You'd think Vans would correct this type of erroneous information. In the scope of things it wouldn't take much effort to edit it to be correct, apply a big brightly colored sticker on the plain page alerting that it's a trim to fit situation!!!!!!!!!!!!!!
__________________
Maule MXT-7(daily flyer)
Lancer 235(partner)
Raidial RV-8R Standing on it's tall Grove gear swinging 84Ē of whirlwind prop & taxi testing under way
Reply With Quote
  #4  
Old 12-23-2020, 06:20 PM
Lucky Aviation Lucky Aviation is offline
 
Join Date: Nov 2017
Location: Foster Kentucky
Posts: 38
Angry

Bummer, I just made this mistake today.
Reply With Quote
  #5  
Old 12-24-2020, 07:26 PM
A36Lee's Avatar
A36Lee A36Lee is offline
 
Join Date: Jul 2018
Location: Charlotte
Posts: 41
Default Not understanding - 7 or 8?

I am having a hard time understanding this. Confirming that you are talking about RV-8? The drawing 27A you attached is for RV-7.

I looked through my drawings and for the -8 the drawing is 78 and it says remove 9/16", not 5/8". I have marked a note in plans to verify the removal when I get to that point.
__________________
Lee Wenninger
Building RV-8
Flying Beech A36
Waxhaw, NC
Based KEQY
Dues paid '21
Reply With Quote
  #6  
Old 12-24-2020, 08:42 PM
jcarne's Avatar
jcarne jcarne is offline
 
Join Date: Jul 2016
Location: Worland, Wyoming
Posts: 2,324
Default

I ended up removing quite close to 5/8ths on my 7A and it worked perfectly. I did however follow what Vanís mentioned and didnít trim anything until I knew how much after test fitting.
__________________
Jereme Carne
PPL
RV-7A Flying as of 03/2021
Reply With Quote
  #7  
Old 12-25-2020, 01:02 AM
skylor's Avatar
skylor skylor is offline
 
Join Date: Aug 2009
Location: Southern California
Posts: 1,065
Default VS Spar Trim

It’s been a few years, but I recall following the plans for trimming the end of the VS forward spar and it worked out fine. Are you sure that you have the HS incidence correctly set and that you are properly setting the height of the VS and the VS leading edge by ensuring proper rear-spar and rudder hinge line alignment?

Skylor

Last edited by skylor : 12-25-2020 at 10:12 AM.
Reply With Quote
  #8  
Old 12-25-2020, 03:51 AM
DTARM1 DTARM1 is offline
 
Join Date: Feb 2016
Location: Planet Earth (and it's lonely here)
Posts: 55
Default Wrong ISO/Page/Airplane

Agree with A36Lee. pg78-8 is for the 8 and not 27. Could you and Miller have been talking about the 7?
Attached Thumbnails
Click image for larger version

Name:	Pg 78-8.jpg
Views:	289
Size:	432.0 KB
ID:	6170  
Reply With Quote
  #9  
Old 12-25-2020, 10:22 AM
skylor's Avatar
skylor skylor is offline
 
Join Date: Aug 2009
Location: Southern California
Posts: 1,065
Default Kit Versiom

Quote:
Originally Posted by DTARM1 View Post
Agree with A36Lee. pg78-8 is for the 8 and not 27. Could you and Miller have been talking about the 7?
This depends on which version of the 8 kit the OP is building. If itís the original ďnon matched-holeĒ fuselage kit, then drawing 27 is the correct drawing. If heís building the ď-1Ē fuselage then drawing 78 is the correct one.

On the older fuselage kit, itís a bit tricky to set the correct height of the rear spar and this can affect the amount that the forward spar needs to be trimmed.

Skylor
Reply With Quote
  #10  
Old 12-25-2020, 01:57 PM
Anon455 Anon455 is offline
 
Join Date: Dec 2020
Posts: 51
Default

Skylor, I'm new to the vernacular used in this forum and I don't know what is meant by OP could you let me know it's meaning? Also - I'm wondering - the plan posted by vomatic is labeled for the RV-7 and it doesn't say (anywhere that I could find) that it's for the RV-8. I understand some of the components are shared amongst different RV models, but is it normal to go by plans written for another airframe? Thank you...
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 07:30 AM.


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.