Ultimate Biplane 40 (oz13254)
About this Plan
Ultimate Biplane 40. Radio control biplane sport model for .40 engines.
Discontinued kit from Great Planes.
As requested on the wanted page.
Quote: "The Great Planes Ultimate 40 is a high performance, propeller-driven sport biplane that closely resembles the full size Ultimate. The Ultimate 40 is very stable and forgiving, allowing even intermediate skill level pilots to enjoy it.
This is not a beginner's airplane! While the Ultimate 40 is easy to build and flies great, we must discourage you from selecting this kit as your first R/C airplane. It lacks the self-recovery characteristics of good basic trainers such as the Great Planes PT Series. On the other hand, if you have already learned the basics of R/C flying, and you are able to safely handle a 40-size low wing airplane, the Ultimate 40 is an excellent choice to try your skills at flying a biplane.
Engine selection: There are several engines that will work well in your Ultimate 40. We recommend a hot 2-stroke such as an OS .40FX or SuperTigre G45 with a Pitts style muffler. For unsurpassed power and realistic sound, an OS FS-52 4-stroke can't be beat. The engine you select will determine how you build the firewall section, so it is important that you have the engine close at hand while building..."
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Supplementary file notes
Instructions. Complete, 48 pages.
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