Chapter 524

Frederick, MD.
A 501(c)(3) non-profit organization. Est. 1975

Cub Work Session #36

The main task on Wednesday was trammeling (squaring) the wing. This process proved to be more complicated and time consuming than expected. We first had to level the wing. Then, working with one bay at a time, we used a rod with trammel points at each end to measure diagonally across the bay in each direction. The crossing drag wires were then tightened in small increments to eventually make the two measurements match. The final step involved measuring and adjusting the tension of the drag wires using a fish scale. It was definitely a slow process. By lunch time we had completed two of the five bays. Meanwhile, Mike continued the complex riveting of the aileron repair. That job is nearly done. Trammeling will continue on Saturday,
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