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.






VAF on Twitter:
@VansAirForceNet

  #1  
Old 09-21-2022, 01:58 PM
MaysRV10 MaysRV10 is offline
 
Join Date: Jan 2021
Location: Algonquin
Posts: 9
Default Rear Emp Skin off

Builders

I’m nearly complete with riveting the emp skins. The next step on page 10-20 step 6 is riveting the F1079 bottom skin, no sweat…

Well, it doesn’t fit🙁 I went to cleco it in place and when I wrap it aroundthe skins it’s a 1/16 off from the rivet holes on the opposite skin side. No amount of squeezing the tail is going to get the holes lines up.

When I clecoed everything together and match drilled it was extremely tight but manageable.

I leveled it out and it’s leveled, so no twist.

Maybe it’s the primer on all the parts…

Wondering if I can order a new skin with no holes on one side so I could match drill it.

Anyone encounter this problem and if so how did you handle it.
Thanks
Reply With Quote
  #2  
Old 09-21-2022, 02:50 PM
N427EF N427EF is offline
 
Join Date: Oct 2005
Posts: 1,696
Default Please don't

Quote:
Wondering if I can order a new skin with no holes on one side so I could match drill it.
Your skin will fit just fine but given the primer and what not, it might not want to conform as easily as it did with a smooth metal to metal surface.
You may need to use a set of ratchet type straps to persuade that skin to line up with the holes in the ribs. Make sure you use some wooden blocks on the trailing edge rear spar so you won't bend the skin. Start inserting clecos at the nose and move rearward. Many times when I encountered a tight fit, I would insert clecos in all the holes and at the end remove a few at the time for riveting.
Those straps can be very useful elsewhere when your project moves along, such as fuselage top skin etc. Four of those should do nicely and cost a whole lot less than a new skin.
Let us know how it goes.
__________________
Ernst Freitag
RV-8 finished (sold)
RV-10 IO-540 8.5:1
Running on 91 Octane E10 mogas since 2011
We all get what some of us deserve
Reply With Quote
  #3  
Old 09-21-2022, 04:41 PM
MaysRV10 MaysRV10 is offline
 
Join Date: Jan 2021
Location: Algonquin
Posts: 9
Default

Great suggestion, I’ll give it a try!

Thanks
Reply With Quote
  #4  
Old 09-22-2022, 01:29 AM
ewumnrr ewumnrr is offline
 
Join Date: Jul 2020
Location: SAN DIEGO
Posts: 115
Default

I always have a small awl on hand when assembling parts. If holes don't quite align, I carefully try to pull them in with the awl.
Even if the holes align and a rivet fits in, sometimes the rivet is a bit slanted because the skins are ever so slightly shifted and put side pressure on the rivet. This will often be the root cause for a bent-over shop head. Going in with an awl before putting the rivet it avoids that.
__________________
Martin R
San Diego
RV-10 - building
Reply With Quote
  #5  
Old 09-22-2022, 06:21 AM
thiggins thiggins is offline
 
Join Date: Mar 2020
Location: Saluda,NC
Posts: 147
Default No drilling…

IMHO: Yes, I’m building an RV-12iS, but it’s still a modern Vans kit.

The quality and accuracy of Vans parts are so good, I feel if I even think about drilling to get something to fit, I’m screwing things up. I never, ever drill…( well maybe once so far).

Some of my goto tools are old drill bits that I’ve rounded/tapered the end of the smooth shaft side, covering the cutting end with duct tape, to protect my hand.
This is a great alignment tool. It may take quit some effort to get those precise holes to align using the tool, but I believe it’s worth it. Every time we “match drill” any of those final sized holes (https://www.vansaircraft.com/2020/07...on-rv-10-kits/ ) from Vans, we’re changing blueprinted dimensions, and making at least one very precise round hole no longer round,…Not good. I also think that’s a root cause for loose/smoking rivets later, down the road.
__________________
Donation 2022 paid
ASEL INST COMM Tail-wheeler
RV-12iS builder (Empennage complete, Wings complete!, Fuselage under way !, finish kit ordered, Garmin avionics ordered, engine order waiting for the global economy to be resuscitated...)
https://eaabuilderslog.org/?blproject&proj=7buPHH99v

Last edited by thiggins : 09-22-2022 at 06:28 AM.
Reply With Quote
  #6  
Old 09-26-2022, 11:14 PM
MaysRV10 MaysRV10 is offline
 
Join Date: Jan 2021
Location: Algonquin
Posts: 9
Default Does the skin go on the outside or inside?!

Builders

I’ve been reviewing other posts and I’ve come across two posts now that the builders have installed the aft tail skin on the inside of canoe.

I’ve been trying to install the skin on the outside.
Step 6 reads Rivet the F-1079 Aft Bottom Skin to the F-1011 & -1012 Bulkheads, the F-1073 Side Skins, and to the F-1078 Forward Bottom Skin.

Now I’m second guessing myself, this would explain why I’m having a difficult time lining things up.
https://eaabuilderslog.org/showmy.ph...EEDE1FFAB.jpeg

What have other builders done? Has the rearward skin been on the outside or inside of the side skins.

Last edited by MaysRV10 : 09-26-2022 at 11:18 PM. Reason: Added link for picture
Reply With Quote
  #7  
Old 09-27-2022, 12:18 AM
ewumnrr ewumnrr is offline
 
Join Date: Jul 2020
Location: SAN DIEGO
Posts: 115
Default

I checked your log and you need to change the order in several images, might be all the same skin.
The skins always have to overlap in a way where if the water runs down, it's not entering the seam, rather passes the seam and then skips to the underlying skin, just like a roof tile. Same for front to back: front panel always overlaps a more rearward panel, so water doesn't enter. There are only very few exceptions (elevator counterweight rib skin and one skin in the 4-fold corners when you mate the tailcone).
__________________
Martin R
San Diego
RV-10 - building

Last edited by ewumnrr : 09-27-2022 at 12:21 AM.
Reply With Quote
  #8  
Old 09-27-2022, 09:51 AM
MaysRV10 MaysRV10 is offline
 
Join Date: Jan 2021
Location: Algonquin
Posts: 9
Default

Thanks, that's very helpful😀
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 05:54 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.