Sunday, January 1, 2017

Left Wing Lift Strut Attach Brackets

Even though the Lift Strut Attach Brackets were placed at the factory there is still quite a bit of work to do to get them attached to the wings.  First, their placement had to be verified with measurements provided by Just Aircraft.  Then the Lift Struts were attached with the provided AN bolts and lifted 3ft to check for no binding in the attach bracket.

Lift Strut installed and checked
Once the location was verified the holes were drill into the spars using the pre-drilled holes in the lift strut attach brackets as guides.  Holes were drilled to final size (#30 drill bit) and cleco'd in place.
Ed drilling Holes while Mike look over his shoulder
After drilling all the holes, everything was disassembled and then deburred.  The mating surfaces were abraded and cleaned with acetone.  The rear strut attach bracket was then epoxied and riveted in place.  There were two sized rivets that had to be used.  CCP44 were used when ever the bracket was attached to just the spar, but SSD48 (i.e. longer rivets) were used when the bracket was attached to the spar the then internal I-beam.  After allowing the epoxy to set for awhile, the edges were smoothed to create a nice fillet. Hours: 3

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