Guys,
I have been looking for the plans and article for the original 1/2A full fuse proto speed plans, published sometime in the mid to late s 60"s. This was when the event first started in the US. I think it was by either Dale Kirn or Warren Kurth. I have tried Outerzone but they only have recent ships. If anyone can post a copy or point me to a site to download it I would appreciate it greatly.
Best, DennisT
Dale Kirn was instrumental is establishing rules for the new (at the time) rules for 1/2A Proto. The rules at that time were for a cowled engine, two wheels, 18" minimum span, something like 45 sq in minimum area and required a canopy. (The rules were later changed to require only a 14" minimum span.) A cowled engine was not required if it was a scale model of a full size airplane.
Dale published his "Lil Pronto" in American Modeler, Sep/Oct 64, inverted engine. Plans showed a magnesium pan which Kirn suggested could be made from a carved wood pattern and take it to a foundry that does magnesium casting. He also suggested the pan could be formed with a full length of "1/8" epoxy board with a balsa block glued to it and carved to outline."
There were several other 1/2A proto plans published after that. Then, the event sort of morphed into the 1/2A profile proto event.
For the record, Cox did sell magnesium pans for these 1/2A Proto ships that fit the plans to the Kirn Lil Pronto.
Plans and the article are available from the AMA Plans Service.
Keith