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-7/7A
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 04-03-2019, 02:23 AM
Draker's Avatar
Draker Draker is offline
 
Join Date: Jun 2016
Location: Livermore, CA
Posts: 576
Default Watch out for forward floor stiffener orientation

Here's a reminder to builders working on the forward fuselage. Don't make the mistake I did. This isn't really a gotcha because the plans are very clear:

When building the floor stiffeners, carefully examine drawing 23. For the inboard stiffeners, F-772B-R goes on the right side and F-772B-L goes on the left side. Makes sense. But for the outboard stiffeners, they must be reversed! F-772B-R outboard stiffener goes on the left side and F-772B-L outboard stiffener goes on the right side. If you aren't careful, it will not be obvious that you reversed them because the parts are similar and fit both ways. Later, you will go to fit the cover plates in the cabin and you will encounter this:



I'm confirming with Vans whether it would be acceptable to add a second notch to the cover plates instead of drilling out the stiffeners and re-constructing them, but best not to make the mistake in the first place.

If you've still got the canoe flipped over, remember to double check the orientation of those stiffeners before you rivet!
__________________
Ryan Drake
Livermore, CA
https://stiletto.smugmug.com/RV7
Donated 12/31/2020
RV-7A (N12VD): Finishing final tasks for engine-start and airworthiness!
Reply With Quote
  #2  
Old 04-03-2019, 06:38 AM
bret's Avatar
bret bret is offline
 
Join Date: Feb 2010
Location: Gardnerville Nv.
Posts: 2,828
Default

Yip, I did that, but caught it before the skin went on, still a pain to remove those angles....
__________________
7A Slider, EFII Angle 360, CS, SJ.
Reply With Quote
  #3  
Old 04-03-2019, 09:36 AM
Draker's Avatar
Draker Draker is offline
 
Join Date: Jun 2016
Location: Livermore, CA
Posts: 576
Default

Yea, after sleeping on it I think it would be better to bite the bullet and remove/swap the stiffeners. I'm pretty sure when I drilled them, they were oriented correctly, so the holes should line up exactly. Access is still great without any cabin innards done. I was thinking I'd have to find a partner to rivet them back on but instead if I rest the fuselage on a couple of sturdy 2x6s and a back rivet plate, I bet I could back rivet those solo. I'll noodle on this today some more and see what I decide to do.
__________________
Ryan Drake
Livermore, CA
https://stiletto.smugmug.com/RV7
Donated 12/31/2020
RV-7A (N12VD): Finishing final tasks for engine-start and airworthiness!
Reply With Quote
  #4  
Old 04-03-2019, 10:49 AM
wirejock's Avatar
wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
Posts: 4,775
Default Stiffeners

Yep. Had to drill mine out too. Seems like they fit just fine flip/flopped.
You also have a floor cover that has to go betwee them so you do have to switch them.
__________________
Larry Larson
Estes Park, CO
wirejock at yahoo dot com
Donated 12/01/2021, plus a little extra.
RV-7A #73391, N511RV reserved (3,000+ hours)
Empennage, wings, fuse, finishing kit done. Working FWF
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
  #5  
Old 04-03-2019, 09:30 PM
Roy Thoma's Avatar
Roy Thoma Roy Thoma is offline
 
Join Date: Aug 2011
Location: Hillsboro, OR
Posts: 183
Default

My quickbuild fuselage had these stiffenes installed wrong. Van?s either gave me replacement covers notched to match my fuselage or they gave me covers that without notches and I cut them. Classic Aero Design also make the stuff that goes underneath the forward carpet match my stiffers.

Regards,
__________________
Roy

N174RT (RV-7A) first flight 5/31/11, 1890hrs as of Sept 2021:
Tip-up, Lycon IO-360 EXP, WW 74HRT, AFS 5600T, AF-Pilot, IFD440, SL-30, echoUAT, D100 for backup, CQ1 headsets, CMW E-Lift

Our other riveted aluminum monocoque RV is a 2012 25' Eddie Bauer Airstream

Past aluminum monocoque vehicles:
N601RT (CH601HDS) First flight 5/03, 1550hrs after flying 8 years: 912ULS, GNS430W, SL-30, D10A Sold
1995 Midnight Pearl NSX w/BBSC Sold

EAA Chapter 105 board member 2010->2015
Reply With Quote
  #6  
Old 04-04-2019, 12:16 AM
davidkarlsberg davidkarlsberg is offline
 
Join Date: Mar 2006
Location: LA
Posts: 145
Default

Mine are backwards too. Just had to tell Classic Aero to change the carpets a little. Vans told me not it's not a problem if they are backwards.
__________________
Los Angeles
RV-7 Builder
www.davidkarlsberg.com
Reply With Quote
  #7  
Old 04-04-2019, 01:31 AM
gasman gasman is online now
 
Join Date: Mar 2007
Location: Sonoma County
Posts: 4,143
Default

Quote:
Originally Posted by Draker View Post
Here's a reminder to builders working on the forward fuselage. Don't make the mistake I did. This isn't really a gotcha because the plans are very clear:

When building the floor stiffeners, carefully examine drawing 23. For the inboard stiffeners, F-772B-R goes on the right side and F-772B-L goes on the left side. Makes sense. But for the outboard stiffeners, they must be reversed! F-772B-R outboard stiffener goes on the left side and F-772B-L outboard stiffener goes on the right side. If you aren't careful, it will not be obvious that you reversed them because the parts are similar and fit both ways. Later, you will go to fit the cover plates in the cabin and you will encounter this:



I'm confirming with Vans whether it would be acceptable to add a second notch to the cover plates instead of drilling out the stiffeners and re-constructing them, but best not to make the mistake in the first place.

If you've still got the canoe flipped over, remember to double check the orientation of those stiffeners before you rivet!
Here is where Van's could just change the part # from L&R to A&B and eliminate the problem.
__________________
VAF #897 Warren Moretti
2020 =VAF= Dues PAID
Reply With Quote
  #8  
Old 04-04-2019, 09:32 PM
Draker's Avatar
Draker Draker is offline
 
Join Date: Jun 2016
Location: Livermore, CA
Posts: 576
Default

Ended up swapping the stiffeners. Piece of cake.
__________________
Ryan Drake
Livermore, CA
https://stiletto.smugmug.com/RV7
Donated 12/31/2020
RV-7A (N12VD): Finishing final tasks for engine-start and airworthiness!
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 10:21 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.