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RV-7 Construction Log
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Date:  9-23-2012
Number of Hours:  6.00
Manual Reference:  p 7-9
Brief Description:  Completed Left Wing Top Skins!

Today, Hal Lyons (on the right in photo1) and I riveted the left wing's top main skins using the standard shoot and buck technique, with me shooting and him bucking. Hal has completed and is flying a slow-build RV-7, but had never used a tungsten bucking bar before. Needless to say, he was very impressed, and used it for all but a very few rivets. We partnered on all of the main spar and rib rivets (photo 2), as well as aileron bracket doublers and several others on the rear spar where the shop heads of previously installed #4 rivets might interfere with squeezing. To ease the access to the rear spar rivets we rotated the wing stand to make the aft end of the top skins vertical.

After Hal left I started to squeeze the rest of the rivets in the rear spar, but found that my 2.5" yokes were slightly too shallow, so I ended up shooting and bucking those solo. To make access a bit easier, I rotated the wing stand as shown in photo 3. After finishing the rear spar, I completed the inboard rib with a squeezer, including nutplates for the wing root fairing. To ensure good nesting I gave the nutplate screw holes and the -3 rivet holes not associated with the nutplates an extra squeeze in assembly. The final result looks really good!

Rivets Today: 567
Rivets Total: 4411
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Hal and I discussing our next move.

Hal and I discussing our next move.

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All ribs, main spar, and skin overlap are done.

All ribs, main spar, and skin overlap are done.

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Rear spar and root rib are done.

Rear spar and root rib are done.

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