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08-28-2023, 06:12 AM
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Moderator/Tech Counselor
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Join Date: Jan 2005
Location: East Troy, WI
Posts: 2,032
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There was an SB regarding the bolts and blocks used in this area. I believe they are required and have been overlooked by some builders.
Roberta
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Roberta Hegy
Built/Flew an RV-7A
Air Troy Estates, East Troy, WI
Ford Expedition and TRICE "Q"
Built Glen L "ZIP" Classic Outboard Runabout and Super Spartan Hydroplane
Glen L Torpedo
Porsche Boxster 718
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08-28-2023, 07:30 AM
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Join Date: Oct 2005
Location: Estes Park, CO
Posts: 6,644
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SB
Quote:
Originally Posted by robertahegy
There was an SB regarding the bolts and blocks used in this area. I believe they are required and have been overlooked by some builders.
Roberta
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Nope. The SB bolts are inserted aft/forward into nutplates in the spar web.
The mystery holes are on the forward side of the center section. There is nothing on either side. They are left empty.
__________________
Larry Larson
Estes Park, CO
E-mail: wirejock at yahoo dot com
Builder Blog: http://wirejockrv7a.blogspot.com
Donated 12/2022, plus a little extra.
RV-7A #73391, N511RV reserved
Disclaimer
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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09-20-2023, 01:06 AM
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Join Date: Oct 2010
Location: Belgium, Geraardsbergen
Posts: 143
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I guess you are talking about these... It's also one of the "must do" items on my final inspection list.
On my RV7 plans they are mentioned on DWG11 bottom left.
I also read that many forget them. Not a real good idea on something holding the wingspar.
Last edited by JurgenRoeland : 09-20-2023 at 01:10 AM.
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09-20-2023, 08:12 AM
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Join Date: Mar 2018
Location: KAJO
Posts: 1,113
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Quote:
Originally Posted by JurgenRoeland
I guess you are talking about these... It's also one of the "must do" items on my final inspection list.
On my RV7 plans they are mentioned on DWG11 bottom left.
I also read that many forget them. Not a real good idea on something holding the wingspar.
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This is very similar to my RV8 as well.
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RV8 (N38PV)
Days to First Flight: 999
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09-20-2023, 08:13 AM
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Join Date: Oct 2005
Location: Estes Park, CO
Posts: 6,644
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Holes
Quote:
Originally Posted by JurgenRoeland
I guess you are talking about these... It's also one of the "must do" items on my final inspection list.
On my RV7 plans they are mentioned on DWG11 bottom left.
I also read that many forget them. Not a real good idea on something holding the wingspar.
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Jurgen
Those are not the holes. Look at the opposite side of the Center Section. Two matching holes with nothing in them
__________________
Larry Larson
Estes Park, CO
E-mail: wirejock at yahoo dot com
Builder Blog: http://wirejockrv7a.blogspot.com
Donated 12/2022, plus a little extra.
RV-7A #73391, N511RV reserved
Disclaimer
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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09-22-2023, 06:30 AM
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Join Date: Oct 2010
Location: Belgium, Geraardsbergen
Posts: 143
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they looked like the holes you indicated in red on your screenshot on the original post. not sure which ones you mean then. I had one open hole on the F704 rear web next to the F704-D top line, it had no rivet in it but it had one in the opposite forward side web. I placed an AN4 bolt and nut on it which I can still remove it for some magical reason, I find the real reason why that rivet was missing.
edit:>> I get it now... those bolt indeed only go through one side and end in nutplates on the wingspar. I guess the forward holes will remain unused and open. probably same settings on the CNC machine for the identical parts on front and back of F704.
Last edited by JurgenRoeland : 09-22-2023 at 10:21 AM.
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09-22-2023, 07:02 AM
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Join Date: Mar 2018
Location: KAJO
Posts: 1,113
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Quote:
Originally Posted by wirejock
Jurgen
Those are not the holes. Look at the opposite side of the Center Section. Two matching holes with nothing in them
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The nutplates are mounted to the spar. The bolts go through the side that has the aluminum block and clamp down on the spar by bolting to the nutplates. So I guess the holes on the other side are not used.
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RV8 (N38PV)
Days to First Flight: 999
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