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1. 12:22 PM - Help..."Extra" holes in wing spar stub and F704 pieces? (Andrew Douglas)
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| Subject: | Help..."Extra" holes in wing spar stub and F704 pieces? |
--> RV7-List message posted by: Andrew Douglas <adouglas@optonline.net>
Because of a mistake I made that's almost too dumb to talk about (I didn't
notice some holes that were to be used to match drill some parts until after
I'd drilled holes in the wrong place), we now are very gun-shy when we see a
hole that seems to be extraneous, or don't find a hole that we think should
be there.
We've found a few of the former (holes with no apparent purpose) on the main
spar and its corresponding bulkhead assembly (F704).
Can anyone tell me why there are two holes on the wing spar web, at the
inboard end, next to the nutplates that receive the two small bolts which
pass through the F704G bars? Dwg 11, sector B9...you'll clearly see the two
trios of holes for the nutplates, but there are two additional holes there.
These holes line up with the rivet holes that you drill through the 704G
bars. However, as far as we can tell they have no purpose. We're absolutely
sure that the holes in the 704Gs get rivets in them, which hold 704G to the
704B aft bulkhead and 704D vertical. The manufactured heads of the rivets
are definitely meant to set into the 704G, which means that these holes in
the spar serve no purpose and can be ignored, right?
Or do they? We're looking at each other and constantly saying "it wouldn't
be there if there weren't a reason for it."
For that matter, if the bolts that go through the 704G bars and into the
spar terminate in nutplates that are riveted to the spar, then why the heck
are there bolt holes in the FORWARD 704D too? Same deal...they have no
apparent purpose.
Please help.
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Andrew Douglas
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