stunthanger.com
Building Tips and technical articles. => Building techniques => Topic started by: david beazley on June 12, 2012, 05:25:56 PM
-
My on again off again build of a Brodak profile P51-B is back on again. The wing is built and in silkspan and clear dope, fuse, tail feathers and flaps are about ready for glass. I am putting a new Brodak .40 on the nose. The wing is 480 squares, the question is what is a good flying weight? The components at this point are around 1035 grams. 36oz. Planning on dope finish. Not looking for a 20 point finish, just something decent looking to learn beginners pattern with. What is a good rule of thumb lb/sqin for a CL stunt ship? ???
-
What's a Henway?, about 2.5 pounds. I'm not sure why you are going to the effort to fiberglass the fuselage, elevators, and flaps. You risk excessive weight buildup and at this point in your learning curve it really isn't necessary. Silkspan and dope should work fine for these components.
If as I assumethe components include the engine, tank and wheels, that is a good weight. Wing tip weight will add another ounce. From here, a dope finish should not add more than 4 to 5 ounces which keeps the airplane below 44 ounces easy. For your purposes it will fly fine at that weight. Mine all up is 39 ounces which is light but I turned it into a "D" model which removed some wood weight. It is a very good flying model. Silkspan and dope overall. 8)
-
This is a Hennway, as any street rodder knows
-
Nice looking bird Pete! Hope mine turns out half as nice H^^