Check the listing for details. Air Trails BOJO PLAN + BUILDING ARTICLE for 30" OT UC Stunt Bipe Model Airplane. Condition: New. Listed at 17.95 USD. I AM NOT SELLING A KIT, only a new, full-size copy of the Air Trails PLAN + construction article for the famous BOJO old time UC stunt biplane model.The BOJO UC old time stunt biplane appeared in the August, 1948, Air Trails magazine. The designer is shown holding his 30" span model in which he had a Forster .29 ignition engine. Since those old engines turned low rpms, any good .15 glow engine would be perfect today. The BOJO was so popular in the 1940s it was also published in the Air Trails annuals. All necessary parts patterns are clearly shown on this full-size PLAN. THE YELLOW MODEL AT THE BOTTOM OF THE COLOR PICTURE IS A BOJO BEING PROPPED & READIED FOR FLIGHT. I AM NOT SELLING A KIT, only a great new copy of this classic old time stunt PLAN. YOU ARE PURCHASING A NEW, WHITE, FULL-SIZE COPY OF THE ORIGINAL AIR TRAILS PLAN AND A COPY OF THE CONSTRUCTION ARTICLE, FOLDED AND IN A MANILA ENVELOPE.