Plan - 1520 Bj-1b Duster

The BJ-1 Dyna Mite, or California Sailplanes Duster is a sailplane designed by Ben Jansson in the USA during the 1960s. The BJ-1 Dyna Mite first flew in August 1966. The full-scale sailplane was a homebuilt design that sported a 42-ft 8-in. wingspan. The model has a wingspan of 128 inches.  It is a built-up balsa, plywood and spruce model, with miscellaneous hardware required.