VansAirForceForums  
Home > VansAirForceForums

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

- Today's Posts | Insert Pics

  #1  
Old 09-15-2017, 10:42 PM
mfleming's Avatar
mfleming mfleming is offline
 
Join Date: Sep 2016
Location: Joseph, Oregon
Posts: 130
Default Main Spar Countersink

I'm in the process of countersinking the main spar skin rivet holes on the spar web on a RV-7. The countersink depth is set so a dimpled skin will fit.

In the fuel tank area, there are two rivet holes at each main rib location. This is the same as the leading edge area, except the leading edge area has two rivet holes at every location (one for the bottom skin and one for the top skin).

I can't find a call out for the top rivet hole in the tank area. It seems to me that the rivet hole must be countersunk for a AN426AD3-XX rivet.

Van's couldn't say for sure and will be getting back with me on Monday.

What does the collective say?

__________________
Michael Fleming
Joseph, OR
sagriver at icloud dot com

RV-7 Slider #74572
Empennage (sans fiberglass)
Ailerons and flaps complete.
Wings done (sans fiberglass)
Started on QB fuselage
Donated 2017
Reply With Quote
  #2  
Old 09-15-2017, 10:46 PM
PilotjohnS PilotjohnS is offline
 
Join Date: Jan 2016
Location: Los Angeles
Posts: 402
Default I did

I countersunk those . I did it after the tank was done, so had to take off the tank one more time to do these. See my blogspot or my forum posts of my build on here. (Search pilotjohns on here.) these were done to make the river flush. I would set those rivets before match drilling the skin.(i didnt)
__________________
Thank you
John S

WARNING! Information presented in this post is my opinion. All users of info have sole responsibility for determining accuracy or suitability for thier use.

Extra dues paid 2018, worth every penny

RV9A- Status: tail feathers done less tips
Wings 90%
www.pilotjohnsrv9.blogspot.com

Last edited by PilotjohnS : 09-15-2017 at 10:49 PM.
Reply With Quote
  #3  
Old 09-15-2017, 10:50 PM
fl-mike's Avatar
fl-mike fl-mike is offline
 
Join Date: Jul 2005
Posts: 883
Default

Yes, countersink. (Rivet is for rib flange only)
__________________
Mike W
Venice, FL
RV-6A. Mattituck TMX O-360, FP, GRT Sport EFIS
N164WM
N184WM reserved (RV-8)....tail kit done, slow-build wing done, slow-build fuselage started.
Reply With Quote
  #4  
Old 09-17-2017, 09:30 PM
mfleming's Avatar
mfleming mfleming is offline
 
Join Date: Sep 2016
Location: Joseph, Oregon
Posts: 130
Thumbs up

Thanks for the help! Confirms what I suspected.
__________________
Michael Fleming
Joseph, OR
sagriver at icloud dot com

RV-7 Slider #74572
Empennage (sans fiberglass)
Ailerons and flaps complete.
Wings done (sans fiberglass)
Started on QB fuselage
Donated 2017
Reply With Quote
  #5  
Old 12-28-2017, 04:31 PM
Draker Draker is offline
 
Join Date: Jun 2016
Location: Livermore, CA
Posts: 83
Default

Michael, did Van's ever get back to you with a specific rivet length call-out for these? I'm curious too, and found no reference in the plans.
Reply With Quote
  #6  
Old 12-28-2017, 06:55 PM
mfleming's Avatar
mfleming mfleming is offline
 
Join Date: Sep 2016
Location: Joseph, Oregon
Posts: 130
Default

Quote:
Originally Posted by Draker View Post
Michael, did Van's ever get back to you with a specific rivet length call-out for these? I'm curious too, and found no reference in the plans.
Boy, expecting me to remember what happened 3 months ago is asking a lot

Van's called back and no, they couldn't find the callout either

They agreed that countersinking was correct but we didn't discuss the rivet length.

I believe I used a 3-3.5.
__________________
Michael Fleming
Joseph, OR
sagriver at icloud dot com

RV-7 Slider #74572
Empennage (sans fiberglass)
Ailerons and flaps complete.
Wings done (sans fiberglass)
Started on QB fuselage
Donated 2017
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 01:44 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.