Lightweight Tail Surfaces ERoy Edge-glue sheet balsa large enough make stab/elevator fin/rudder unit Use SeeTemp template material outline tail surfaces balsa sheet core Curved outlines can made just easily straight Use balsa stripper cut doubler strips scrap balsa core material Build tail structure light possible necessaiy prevent taliheavy airplane may unstable least difficult control several methods build tails flat sheet stick construction laminated edges curved outlines foam core sheeted complete builtup ribs spars Another method thatl have used strung light adaptable models valying sizes uses thin balsa sheet core false ribs doublers glued can used tail shape fast build example 25-size model used 1A6 sheet balsa core doublers Edge-glue sheet balsa large enough make stab/elevator unit same fin-rudder combination Use SeeTemp template material outline tail surfaces balsa sheet core Note no limitations outline shape tail surfaces Curved outlines can made just easily straight Use balsa stripper cut doubler strips finm scrap balsa core material Glue doublers trailing edge fin leading edge rudder Add doublers same thickness tip rudder fin added strength tip doublers cmss-grain main core center Mark off rib locations keeping square hinge ilne staWelevator core doublers A6 sheet balsa leading edge false ribs square balsa center doubler stab provides good platform gjuing bolting fuselage triangular doubler elevator mounting control hom center section stab elevator canhe reinforced th snips thin plywoodorcarbon fiherasneeded used % plywood inthis case Repeat additions core other side tail Sand leading edge tips false ribs shape Saw apart elevator stab shape both surfaces doublers allow use quick hinges prefer otherwise hinges covering material good small airplanes completed tail assembly weighed ounce bolt-on tail glue would work just same larger models have used same method just increased material sizes 40-size 3A2 sheet core 60-size 3A2 need further strengthen tail aerobatic model add brace wires Make attachment hard points laminating thin plywood over balsa stab fin tips next time need add lightness airplane try method odel Aviation Day 11709 MagruderLn Rockvilk MD 20852 Note doublers trailing edge fin leading edge rudder Add doublers same thickness tip rudder fin cross-grain main core center Mark rib locations keeping square hinge line Stab/elevator complete doublers leading edge false ribs cross-hatched clarity Core doublers /i6 sheet balsa LE false ribs /a square balsa Center doubler stab mounting platform Triangular doubler elevator control horn mount Center section can reinforced strips thin plywood used carbon fiber needed V Sand LE tips false ribs shape Saw apart elevator stab shape both surfaces Doublers allow use quick hinges hinges covering material also good small airplanes Completed bolt-on tail assembly 25-size model mounted 4 fuselage weighed ounce larger models use same method increase material sizes /32 core 40-size models /s2 1h 60size additional strength needed aerobatics add brace wires November 1997 61
Edition: Model Aviation - 1997/11
Page Numbers: 60, 61
Edition: Model Aviation - 1997/11
Page Numbers: 60, 61
Lightweight Tail Surfaces ERoy Edge-glue sheet balsa large enough make stab/elevator fin/rudder unit Use SeeTemp template material outline tail surfaces balsa sheet core Curved outlines can made just easily straight Use balsa stripper cut doubler strips scrap balsa core material Build tail structure light possible necessaiy prevent taliheavy airplane may unstable least difficult control several methods build tails flat sheet stick construction laminated edges curved outlines foam core sheeted complete builtup ribs spars Another method thatl have used strung light adaptable models valying sizes uses thin balsa sheet core false ribs doublers glued can used tail shape fast build example 25-size model used 1A6 sheet balsa core doublers Edge-glue sheet balsa large enough make stab/elevator unit same fin-rudder combination Use SeeTemp template material outline tail surfaces balsa sheet core Note no limitations outline shape tail surfaces Curved outlines can made just easily straight Use balsa stripper cut doubler strips finm scrap balsa core material Glue doublers trailing edge fin leading edge rudder Add doublers same thickness tip rudder fin added strength tip doublers cmss-grain main core center Mark off rib locations keeping square hinge ilne staWelevator core doublers A6 sheet balsa leading edge false ribs square balsa center doubler stab provides good platform gjuing bolting fuselage triangular doubler elevator mounting control hom center section stab elevator canhe reinforced th snips thin plywoodorcarbon fiherasneeded used % plywood inthis case Repeat additions core other side tail Sand leading edge tips false ribs shape Saw apart elevator stab shape both surfaces doublers allow use quick hinges prefer otherwise hinges covering material good small airplanes completed tail assembly weighed ounce bolt-on tail glue would work just same larger models have used same method just increased material sizes 40-size 3A2 sheet core 60-size 3A2 need further strengthen tail aerobatic model add brace wires Make attachment hard points laminating thin plywood over balsa stab fin tips next time need add lightness airplane try method odel Aviation Day 11709 MagruderLn Rockvilk MD 20852 Note doublers trailing edge fin leading edge rudder Add doublers same thickness tip rudder fin cross-grain main core center Mark rib locations keeping square hinge line Stab/elevator complete doublers leading edge false ribs cross-hatched clarity Core doublers /i6 sheet balsa LE false ribs /a square balsa Center doubler stab mounting platform Triangular doubler elevator control horn mount Center section can reinforced strips thin plywood used carbon fiber needed V Sand LE tips false ribs shape Saw apart elevator stab shape both surfaces Doublers allow use quick hinges hinges covering material also good small airplanes Completed bolt-on tail assembly 25-size model mounted 4 fuselage weighed ounce larger models use same method increase material sizes /32 core 40-size models /s2 1h 60size additional strength needed aerobatics add brace wires November 1997 61
