Wednesday, December 5, 2007

Elevator construction

Build hours: 332

There is not a layout for the elevators in the plans!?

A rough skin for the elevator, with plenty of excess, was layed out and trimmed from a sheet of 6061 .016. The center line was folded as far as possible in the brake and then moved to two hinged 2"x4"s to complete the bend. An 1/8" wooden dowel was taped into the crease to maintain the bend radius before closing the bend in the 2"x4"s. The ribs were riveted to the top with temporary aluminum rivets then the elevator was flipped and the skin was drilled for the other side of the ribs. The skin was marked at the rib ends returned to the brake again for the hinge flanges. The flanges were temporarily riveted. The elevator was positioned on the stab an the hinge halves were taped to the elevator with strapping tape. The hinge pins were removed and the elevator was drilled for the hinges.

The elevator can be simple to construct as long as you base the construction on the top of the elevator otherwise the angles and taper can get you!

Plan note:

The plans suggest using a shim under the outboard rib of the elevator during construction to avoid building a twist into the elevator. The kit manual mentions building on the top and use some temporary alumium rivets during the construction. The temporary rivets is much easier.

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