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Randy Tonkin
Joined: 08 Oct 2006
Posts: 1
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 Posted: Sun Oct 08, 2006 10:42 pm Post subject: Internal rivets on the leading edge-to-spar |
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I have a question that came up recently, perhaps some of you can
remember back to the wing construction phase and help me:
When attaching the leading edge assembly to the spar, outboard of the
fuel tank, you are suppose to rivet the forward rib flange to the spar
using an offset rivet set. I did this with the gun on the spar side and
the bucking bar held by another person reaching way inside through the
leading edge lightening holes. The results are not very pretty as the
manufactured head is against the thick spar material and the shop head
forms on the thinner rib flange side. With the spar absorbing the blows
from the gun, it takes much longer for the shop head to form, and does
not hold the rib flange snugly against the spar during the process.
Also, the manufactured head inevitably develops a significant smile
distortion because the position of the set is affected by the proximity
of the central wing ribs. I was not happy, but found drilling out these
particular rivets very messy, making the results go from bad to worse.
After doing the work, I have begun to think I was suppose to set the
rivets in the other direction (manufactured head forward), requiring
the gun to be located deep inside the leading edge, through the
lightening holes. This appears difficult but maybe not impossible,
however, nothing I have read specifies to do this.
If anyone has recently been down this road, how did you drive these
rivets, and did you have any troubles or concerns about the results?
probably do not archive something that should be this obvious.
Randy Tonkin
RV8 Wings
Vashon Island, WA
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wgill10(at)comcast.net
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| Posted: Mon Oct 09, 2006 2:09 am Post subject: Internal rivets on the leading edge-to-spar |
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Hello Randy,
I did this solo with the wing still mounted on the wing stand using a 3X
gun and a heavy bucking bar -- 2 or 3 lbs I think. The manufacturers
head is on the aft side of the spar. They came out very nice.
Bill
--
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dennis.glaeser(at)eds.com
Guest
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| Posted: Mon Oct 09, 2006 8:56 am Post subject: Internal rivets on the leading edge-to-spar |
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Van's allows the use of LP4 rivets in those locations as an option for
those of us who have fat arms and aren't double jointed  (Dan C has
this documented on his site). Even those require a rivet puller that
can get close enough (just like the rivets that hold the attach brackets
to the back of the tanks).
Dennis Glaeser
RV7A Finishing Kit
I have a question that came up recently, perhaps some of you can
remember back to the wing construction phase and help me:
When attaching the leading edge assembly to the spar, outboard of the
fuel tank, you are suppose to rivet the forward rib flange to the spar
using an offset rivet set. I did this with the gun on the spar side and
the bucking bar held by another person reaching way inside through the
leading edge lightening holes. The results are not very pretty as the
manufactured head is against the thick spar material and the shop head
forms on the thinner rib flange side. With the spar absorbing the blows
from the gun, it takes much longer for the shop head to form, and does
not hold the rib flange snugly against the spar during the process.
Also, the manufactured head inevitably develops a significant smile
distortion because the position of the set is affected by the proximity
of the central wing ribs. I was not happy, but found drilling out these
particular rivets very messy, making the results go from bad to worse.
After doing the work, I have begun to think I was suppose to set the
rivets in the other direction (manufactured head forward), requiring
the gun to be located deep inside the leading edge, through the
lightening holes. This appears difficult but maybe not impossible,
however, nothing I have read specifies to do this.
If anyone has recently been down this road, how did you drive these
rivets, and did you have any troubles or concerns about the results?
probably do not archive something that should be this obvious.
Randy Tonkin
RV8 Wings
Vashon Island, WA
| | - The Matronics RV-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV-List |
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