This 1947 0.604 cuin. model was intended as a simplified mass-produced version of Ira Hassad's famous Hassad Custom design. The production engines differed from the prototypes seen in the advertisements. Don Sohn made a few superb reproductions which followed the advertised prototype layout, as seen in the first accomanying image. This version has a larger exhaust manifold and a webbed crankcase, among other things. RJL also made a series of replicas, one of which is seen here in the second accompanying image. These did not feature the spinner units. The full Ira Hassad story may be found in a separate article on this web-site.