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Old 05-06-2011, 07:18 AM
Snowflake's Avatar
Snowflake Snowflake is offline
Join Date: Oct 2009
Location: Sidney, BC, Canada
Posts: 4,164

Originally Posted by Jamie View Post
Looks to me like the problem is that your spar flange is under-dimpled and not allowing the skin to lay flush.
Hmm... Looking at it after reading this, I can just about convince myself that the flange isn't dimpled at all. Perhaps that step got missed?
Rob Prior
1996 RV-6 "Tweety" C-FRBP (formerly N196RV)
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Old 05-06-2011, 01:17 PM
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cjensen cjensen is offline
Join Date: Jun 2005
Location: Milwaukee, WI area
Posts: 2,972

Originally Posted by RVGator View Post
How many of those 35 rivet holes needed a bigger rivet?
None did...just go slow and stay centered, and you won't enlarge the hole. Once the head pops off, just use a center punch and tap it thru.
Chad Jensen
Astronics AES, Vertical Power
RV-7, 5 yr build, flew it 68 hours, sold it, miss it.
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Old 05-06-2011, 02:17 PM
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cdmiller cdmiller is offline
Join Date: Jan 2005
Location: Battle Ground, Washington
Posts: 138
Default I agree with Snowflake

It looks to me like you forgot to dimple the spar flange. As a result, the dimples on the skin have no place to fit into. Also, as someone else mentioned, there may be some metal cuttings between the skin and flange. Drill out the rivets, clean the cuttings, dimple the spar flange holes, use lots of clecos and re-rivet.

If you can't free up the spar flange for dimpling, you can probably dimple the skin and flange together at the same time.

Good luck,

Dan Miller
RV-8 N3TU 945 hours and loving it.
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Old 05-06-2011, 07:51 PM
RVGator RVGator is offline
Join Date: Aug 2010
Location: Gainesville Florida
Posts: 25
Default Love the voice of Experience

Well, you guys were right. If I did dimple the spar I did a really bad job. I decided to drill out the top and bottom skin on the left rear spar. I re-dimpled everything together with a pneumatic squeezer then re-riveted. Here is the result.

I think I'm good on the rivet sizes as well. Of the 74 rivets I drilled out, 4 of them look marginal. Unless the pros feel differently I think I can move on.
Started Emp 1/12/11
Finished HS 5/6/11
Finished VS 5/27/11
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Old 05-07-2011, 12:45 PM
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cdmiller cdmiller is offline
Join Date: Jan 2005
Location: Battle Ground, Washington
Posts: 138
Default Looks great. Move on

Your fix looks great. I would say move on.


Dan Miller
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Old 05-08-2011, 11:47 AM
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vmirv8bldr vmirv8bldr is offline
Join Date: Jun 2005
Location: Eastvale, CA
Posts: 378
Default Much better

Looking good! I say build on!
Bart Filipiak
Eastvale, CA
RV-8 N74VB

Barrett IO-390
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