Brave Cycles was created by Doug Gloyd (a cabinet maker) and had bikes made by different builders.  Tom Teesdale made some of the later frames but this one was made by Bill Grove of Grove Innovations in Pennsylvania.  The rear chain stays are actually Tange fork blades.  Notice the extra bracing between the stays near the drop outs, the extra tube from the seat tube to down tube and the small plate between the seat and down tubes.  Nicely build frame in the wild paint schemes that were popular at the time.