Plan - 1180 Harbinger Mk II
The Harbinger glider plan is 1/4-scale size and was designed by John G Watkins. It is a 7-sheet plan that was designed after a two-place full-scale glider. The model has a wingspan of 180 inches when finished and is 72 inches long. The airfoil is a Clark Y modified section. The glider is a built-up balsa, plywood and spruce model, with miscellaneous hardware required.