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Michael and Gayle's RV-7A
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Date:  5-8-2009
Number of Hours:  5.00
Manual Reference:  
Brief Description:  Level fuselage and prep for wing incidence

Spent several hours jacking up and leveling the fuselage. I let some air out of the nose wheel tire to take pressure off so I wouldn't have to jack any higher than necessary. The front saw-horse (with the legs extended only slightly) is rated for 1000 lbs. The rear saw horse (with legs extended further) is rated at 800 lbs. More than enough to hold this engine/fuse combination. At this point, the mains are about a inch off the ground. After reviewing the very fine supplement (on the subject) from Vans: http://www.vansaircraft.com/pdf/Wing_%20Incidence.pdf, I went back out in the shop and worked until midnight fabricating a drill guide for the critical holes to be drilled in the rear spar. Hopefully, this will save some time tomorrow. As the pictures show, the guide has a center #30 hole drilled with the drill press. The flanges riveted on the sides create a nice visual boundary for the critical 5/8" distance from hole center to outside material edge. The length of the side flange is 1 1/4 ", which is also centered relative to the hole, so the ends of the flanges provide the 5/8" cue for the other perpendicular edge. We'll see how it works out...
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Jacked up and on the steel saw-horses.  Level left/right and fore/aft

Jacked up and on the steel saw-horses. Level left/right and fore/aft

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Made from 1

Made from 1" sq steel tubing.

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Other view with a drill bit shown for reference

Other view with a drill bit shown for reference

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