7th August 2007

Elevator counterbalance

Hours: 1.5 | Posted in Elevators

Deburred the edges of the counterbalance ribs and tip ribs, fluted, aligned the holes, and clecoed left & right assemblies together.  Drilled the rib web holes out to #30 per instructions.  After clecoing on the skins, I had two holes on the top & bottom of each E-913 counterbalance skin that were out by 1/2 hole each (the aftmost hole on the short CB rib, and its partner on the tip rib).  Pondered and took pictures, then studied the plans…had the counterbalance skins on backwards (with the overhang for attaching the tip on the inside versus the outside).  Duh.  Flipped them around and everything lined up nicely.

Hole misalignment Elevator counterbalance assemblies

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