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  #1  
Old 08-13-2022, 05:28 PM
ECAM ECAM is offline
 
Join Date: Nov 2020
Location: Carlisle, Ontario
Posts: 6
Default Spar Caps

I matched drilled the spar caps on the front horizontal stab spar , very happy with my work, until I read the plans again , I thought 5 times was enough.
I have match drilled the flange to #30 size , the plan calls for number #40 size. Now I know the difference between webbing and flange.

I have sent vans support a message , asking them if it is ok to use the #30 size rivet in the flange.

Has anyone else done this , and what was the outcome.
It takes weeks to get replacement parts hoping I can fix this with the larger rivet and of course upsizing the corresponding holes
Cheers
Phil


Sent from my iPad
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  #2  
Old 08-13-2022, 07:33 PM
lipper03 lipper03 is offline
 
Join Date: Sep 2021
Location: Fulshear, TX
Posts: 103
Default

Iím not sure what vans might say, I would think the countersink for AD3 vs AD4 is less deep, might not have enough depth in the flange, or it will be very close. Iíve not measured that to be 100% sure though. Pic is of my spar with the flange spar cap riveted on the flange, after riveting the web. The second pic is the countersink for the dimple skin, there isnít much metal left at the bottom, thatís what Iíd take a closer look at.
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Brian

RV-14A
Build Started 12/31/21-
Section 6-8 complete 8/17/22
*Emp Ordered 9/27/21- Delivered 6/30/22
*QB Fuselage Ordered 11/3/21- Est 2Q23
*QB Wings Ordered 2/18/22- Est 3Q23
*YIO-390-EXP119 Engine Ordered 5/14/22- Est 2Q24
*Prop Ordered 5/20/22- Est March 23
*Finishing Kit ordered 6/25/22- Est Sept 23
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Last edited by lipper03 : 08-13-2022 at 07:48 PM.
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  #3  
Old 08-13-2022, 07:52 PM
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wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
Posts: 5,498
Default Drilling

When you move on, always refer to the plans and rivet size before drilling.
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E-mail: wirejock at yahoo dot com
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Donated 12/01/2021, plus a little extra.
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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.
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  #4  
Old 08-13-2022, 07:58 PM
lipper03 lipper03 is offline
 
Join Date: Sep 2021
Location: Fulshear, TX
Posts: 103
Default Construction drawing markups

Just something thatís helps me, I use two highlighters, yellow and blue. I highlight yellow the step or sentence Iím working, then when complete go over in blue, which makes green. Helps keep each action checked for me. Welcome to check out my eaa build site, I post a picture of the drawing at each post.
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RV-14A
Build Started 12/31/21-
Section 6-8 complete 8/17/22
*Emp Ordered 9/27/21- Delivered 6/30/22
*QB Fuselage Ordered 11/3/21- Est 2Q23
*QB Wings Ordered 2/18/22- Est 3Q23
*YIO-390-EXP119 Engine Ordered 5/14/22- Est 2Q24
*Prop Ordered 5/20/22- Est March 23
*Finishing Kit ordered 6/25/22- Est Sept 23
https://eaabuilderslog.org/?s=RV14A2021

PA-28-236 N419SB
KIWS

VAF donation 2021/22

CAF Member
EAA Member
AOPA Member
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  #5  
Old 08-14-2022, 03:33 PM
ECAM ECAM is offline
 
Join Date: Nov 2020
Location: Carlisle, Ontario
Posts: 6
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Thanks , I will wait for vans response
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  #6  
Old 08-15-2022, 06:54 AM
georgemohr georgemohr is offline
 
Join Date: Aug 2021
Location: Ewing Township
Posts: 97
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We made the exact same error you did. It cost us $650 total to have a new front spar shipped to us and it took about 3 weeks... painful. We moved on to build the elevators while we waited. No time lost overall.

I wasn't happy with leaving these holes oversized with either oops rivets or AD4 rivets. The spar flange and caps are about the most critical part possible, and I didn't want to be thinking about this every time I put some 'g' on the airplane.

I'm sorry bro, I really do feel your pain. Very interested in what the mothership says. Whatever you chose, my advice is to fix it so you never have to think about it again.
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Last edited by georgemohr : 08-15-2022 at 07:12 AM.
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  #7  
Old 08-15-2022, 07:43 AM
Bavafa Bavafa is offline
 
Join Date: Oct 2007
Location: Sacramento, CA
Posts: 4,004
Default

I made the same mistake and only realized as a few holes were drilled with #30. I checked with VANS to see if I can use oops rivet in those holes but they disagreed and endup replacing the spar.
My mistake was that I grab the wrong size drill bit as I have two drills loaded and ready, one for #40 and one for the 30. After this mistake I put different color tape on my drill bits so not to make this mistake again.
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  #8  
Old 08-15-2022, 08:48 AM
jcbarker jcbarker is offline
 
Join Date: May 2005
Posts: 214
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I want to thank everyone who posted on this topic. I had the front spar set up on my table and I was about to start drilling. Checked recent posts during lunch and caught this thread. You saved me from making that mistake! I'll make others but not that one
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  #9  
Old 08-16-2022, 07:43 AM
georgemohr georgemohr is offline
 
Join Date: Aug 2021
Location: Ewing Township
Posts: 97
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This is great to hear, glad our experience helped. I feel like I'm paying it forward for the TON of mistakes I've avoided due to you all and your info.

My best advice to new builders is to make mistakes on small parts that they can fedex instead of freight ship your replacement
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In progress: Left wing
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  #10  
Old 08-16-2022, 11:54 AM
Tom023 Tom023 is offline
 
Join Date: Jul 2011
Location: Cypress, TX
Posts: 489
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Quote:
Originally Posted by georgemohr View Post
It cost us $650 total to have a new front spar shipped to us and it took about 3 weeks... painful.
My goodness prices have increased. I had the unfortunate luck of having to buy three front horizontal stabilizer spars...I had to trash my first HS due to mucking up a couple of rivet holes in the inboard nose ribs. My replacement I accidentally grabbed a #30 instead of #40 drill and had the wrong sized holes like the OP, the third one is flying. My cost for just a replacement spar was $61.60, with shipping $126 due to its length.
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