With the help of my neighbor Al, I picked up some nice wing jigs from another bearhawk builder in Hilliard, FL. They are welded aluminum and are sourced from old F14 towbars from the Navy. I installed some studs into the slab and made the jigs adjustable. With the help of a digital level, I got them perfectly plumb.
Another local Bearhawk builder helped me get the spars set. We ran a small stainless wire between the jigs and leveled it with a small bubble line level. The wire is tied on one side and heavily weighted on the other side, draped over a couple of pieces of angle. It is from this wire all measurements are taken. The spars were adjusted to maintain a constant distance from the wire to the main spar web and rear spar web. The digital level was used to ensure the spars were level in the other axis. Another level with a wood shim was used to ensure the bottom of the spar webs (main and rear) were constant the whole length.
The distance between the spars at the root end is set with a piece of square stock that was machined to the exact distance specified in the plans. This stack has angles attached where it is clamped into the jig.
Getting the spars set in the wing jig
using the flap and aileron supports to set distance between the spars
getting the center ribs trimmed and installed.
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