tI7i iQsQcjr Earlier Ellipsoar right published Sail plane 1970 T-tailed Tellipsoar left resulted seven years Constant development THE TELLIPSOAR high-perform ance Standard Class RC sailplane rugged gentle enough beginner overnight dream developed over period seven years original design called Ellip soar published Sailplane 1970 name came wing stab design wing stab ellip tical planform wing ellipti cal dihedral 1969 elliptical dihedral very rare several years later Hobie Alter realized performance advan tages incorporated elliptical dihedral Hobie Hawk During first four years changed airfoil span year original design 7-ft wing span Eppler E-387 airfoil won several contests design finished year fifth place ECSS During next three years tried 9-ft wing Eppler E-385 9-ft wing Eppler E-387 11-ft wing flat-bottom Standard class sailplane has frequently demonstrated its superiority over first-class competition George Durney Eppler 385 eleven-year-old son Doug built fuselage always second choice four wings During period time won 28 trophies managed finish year top ten ECSS spring 1974 started draw ings new design called Tellipsoar because T-tail configuration no intention completing aircraft until fall Several weeks prior York PA contest year holding Right Canopy removed show installation Kraft brick Although fuselage construction up builder glass pod boom fin canopy outline commercially available local contest practice FAI Glider Contest asked CD Aerolympics son Doug flying Ellipsoar original wing end first two events far ahead field embarrassing speed event same story came through final gate two feet off ground four seconds ahead field However jubila tion turned right instead left took goal post about 40 mph Need less say goal post won evening begged help him build Tellipsoar before York contest already carved plug fuseAugust 1976 47 Tellipsoar spreads its graceful wings ellip tical dihedral elliptical planform efficient wing configuration possible Tellipsoar lage good friend said would take molds furnish fuselage pieces agreed build stab assemble fuselage Doug would build wing Well make long story short finished airplane day before York contest managed get test flight prior meet day York contest arrived flying task hA scale runway believe Doug won per fect score15 minutes nose three perfect 100-point landings per formance left Otto Heithecker Don Goughnour Kelly Pike mouths open convinced Tellipsoar real winner During next year discovered real secret success story Tellip soar very high-performance sailplane will everything want want happen has very positive control stable enough real novice have flown several com plete flights including launch touching transmitter ask change flight altitudes never hesi tates down wind slow speeds Please dont let wing stab design scare Once have building jig can build wing less time other sailplane wing have built need make jig some scrap plywood paneling Cut shaped sup ports -in ply -in board Cut building surface -in ply wall paneling After have nailed jig together can build wing anywhere wife can spare four feet area have building space entire 100 jig suggest build two halves bolt together center way can build entire wing two evenings After have completed jig line up plans board Next cut glue entire bottom sheeting including cap strips center section place next operation attach three bottom X 3/16 spars sheeting can install ribs sub-leading edge primary top spar After have stalled brass tubing install second ary top spars spar webs making sure use plywood vertical grain balsa shown plans final operation before removing wing 48 Model Aviation Hitting spot like falling off log posi tive control response exists downwind low speed Stability enough novice plans install top sheeting After wing removed building jig trim top bottom sheet ing attach leading edge shape leading edge attach ply wood center-section ribs Before leaving wing have several comments First make sure bottom sheeting spars stay down building jig during assem bly will present no problem use balsa spars spruce absolutely un necessary Second attach tips several pieces plastic tape will amazed much shock will absorb doing damage wing tip Building full-flying horizontal stab difficult requires little explanation Glue spar place lower sheeting secure sheeting building board under inboard end spar Next prop up leading trailing edges 3/16 sheet ing Glue ribs brass tubes place attach top sheeting method will insure straight assembly warp After assembly has dried remove building board shape leading trailing edges attach plywood center ribs Tellipsoars built date have incorporated fiberglass fuselage shown plans Fiberglass provides light tough fuselage no reai reason fuselage could molded balsa built up balsa balsa plywood foam desire recommend either carve plug pour molds make fiberglass fuselage better yet buy fiberglass parts ready assembly assembled pod one-piece boom no seam canopy frame vertical fin weight compartment tube cover avail able $30 Mr Thomas Townsend U author about make test flight early Tellipsoar Although has very high performance has made several hops cluding launch touching transmitter 50 Model Aviation Tellipsoar RD #3 Box 589 Milford DE 19963 high-quality cloth-reinforced polyester resin parts can finished almost choice paint prefer refrigerator enamel dope lacquer polyurethane epoxy work fine As assembly fuselage prefer install nyrod linkage continued page 82 Top The building jig elliptical wing assem bled located flat surface Jig does take little time wing builds quickly build jig big plus Above Douglas Durney checking alignment finished wing Yes boy did build Right Wing jig separated centerline makes easy storage Note 1/16-in deep saw cuts bottom paneling allowing easy bending elliptical shape Below Finished components young Douglas sailplane foreground fiberglass parts dads ship Tube making optional bal last compartment See plan side view HIGH PERFORMANCE * COMPETITION PROVEN * THIN RIGID BLADES OF HARD MAPLE WOOD SUPERBLY FINISHED COMPLETELY FUEL PROOF SPECIAL PRO SERIES 2 P OR RCFREE FLIGHT CONTROL LINE DIA PITCH PRICE 5%3485 63485 733%4110 83%456115 945677%125 10467130 106VV 8W130 10GEW135 114677% 7A7%8145 1166W150 11%67150 126155 125W160 1356195 1456225 1556275 164%6350 W WIDE BLADE EW EXTRA WIDE SERIES 400 B FOR SPEED & RACING ADVANCED DESIGN NO 1 IN PYLON RACING LEADING SPEED RECORD HOLDER OP ALL TIMES CL Racing continued shut down TR activity since Texas TR hotbeds during 73 74 raced Goodyear Late 74 decided make effort 75 Team Trials began scratching gether new plane engine significant problem nearest suitable practice site 200-mile oneway trip Believe entire 14 months preparation Trials Lake Charles drive 200 miles either Fort Worth Dallas flying sites time wanted prac tice try-out anything new Plaunts preparations World Champs can best summed up quoting part letter Jim main concern just place fly probably will make changes Champs several rea sons may able practice no place fly Also will find out Sue absolute begin ners TR compared rest Team 'Going out limb bunch new stuff would foul us up actually have lot experience Goodyear TR will stick stuff know Also lack flying site severely impairs ability try new things third-place team composed Bill Wright Jim Dunkin Kansas City MO first time US team Bill Jim represented us 1968 1970 1972 Bill 41 years old married two children advertising graphics designer Bill has flying model airplanes since five years old getting Control Line 1949 flying things 60 Speed job Olathe Nats has mostly Control Line small amount Free Flight Bill started Team Race 1962 teamed up Jim Dun kin first contest 10th KOI December 1963 took first place Jim 36 single works Mis souri State Highway Department spector started flying late 50s mostly Control Line time did own Indoor hand-launch glider record Jim tells story 75 qualifVing Nats near disaster creamed best plane Rossi contest St Louis two weeks before trials two other planes almost done didnt expect have use moved shut-off refueler valve up make little accessi able doing also moved back behind motor plate Unknown us time put filler tube tank low pressure area caused us run engine much richer order draw against slight vacuum cost us bunch laps some speed main trouble Nats coupled rebuilt engine creamed St Louis piston sleeve wearing out lucked out made team adding some hot stuff fuel some extra speed still short laps accelerated demise engine until shot Nats time spent next two months trying find problem Finally figured out moved valves forward leading edge wing both planes laps came right back though speed down due engine being good least system back normal could concentrate engine prop fuel combination able tell what going address 3533 Tamarisk Lane Missouri City TX 77459 Tellipsoar/Durney continued page 50 vertical fin before attaching boom point should attach horizontal stab fin make sure aligned both planes before securing rear fin post place Also make sure stab linkage good free too much play action Next assemble fin boom reinforce sides recommend attach rudder rudder nyrod Now can set boom assembly aside install weight compartment brass tubes wing wires point ready make final assembly between pod boom Attach stab vertical fin wing pod provides good reference correct alignment Rough up inside boom outside pod epoxy two together checking alignment between wing stab making sure angle between pod boom shown drawing Also make sure pod boom straight line vertical plane Finishing model point rather straightforward presents little problem prefer Monokote wing stab silk dope other covering will work preference trans parent Monokote because excellent visibility provides fact lot easier lungs Almost radio can installed Tellipsoar will accommodate popular bricks servo trays Mount battery far forward possible use styrofoam make sure stays opinion battery should always mounted ahead receiver servos because heaviest part air borne pack could lot damage rest radio event crash Add lead shot nose-weight com 82 Model Aviation RC PYLON RACING DIA PITCHPRICE 5314110 756125 7SN 6N125 81 6%77%150 96%77%150 CONTROL LINE SPEED & RACING DIAPITCHPRICE 4/6%110 4%55%110 6768%120 77%10A11128 88135 89N 9%N135 8%77%140 91212150 NNARROW Langleys Model Aero Engine 1903 Robert Meyer Curator National Air & Space Museum Smithsonian Institution Illustrated orical Collectors Item $500 Cumberland Press 4926 Del Ray Avenue Bethesda Maryland 20014 Name Addrns City ____________________ 7in miowes PRODUCTS CD 400 South Indiana St Hobart Indiana 46342 partment balance model shown plans builder doesnt get carried away paint covering stab fin model will balance two ounces tare weight Hand glide model check trim ready try first launch recommend locate tow hook approximately ahead CG first several launches move back /4 time until approximately 1 behind CG further back can move tow hook sailplane becoming too unstable during tow higher launch can obtain using electric winch keep speed down will use up less line 0-10 knot winds prefer fly air plane additional weight Above 10 knots can add up lb lead weight compartment using 4-oz slug place third tube back front want 8 oz additional weight place lead slugs second fourth holes want 12 oz use back three holes arrangements will maintain CG loca tion very windy conditions slope soaring place fourth weight front tube will shift CG slightly ward better handling Good luck send photographs trophies CL Speed/Bussell continued page 31 made out /2 thick bass over length will approximately 19 long approximate length Harters pan after pan cut match diameter Supertigre 29 spinner engine mounted Lets make wing /t thick hard 6 lb 8 lb C grain balsa can save little weight over bass wing very important big airframe wing will 25 long 6 root 4 tip chord Use /8 X 3 bass maple spar mount control system tie down bolts wing leading edge straight wing taper trailing edge airfoil symmetrical 30% high point Stab stab going measure 39 sq in area should made 3/16 hard balsa root chord 3 tip chord 2 overall length 13 rest design very similar construction techniques speed ship cowl height shape depends engine used personal preference fuselage top should made hard balsa again wing location found 90 sq design pre-assembling component parts airframe moving wing fore aft until C/G located right line outlet Allow about 70 100 nose drop allow paint perma nently attach wing top crutch carving wing always leave flat section bottom wide enough mount wing crutch comes time permanently mount wing top crutch dont have measure wing alignment know wing mounted 00 angle attack very important wing stab mounted 00 angle attack engine thrust line Finish finish big airframe very important care should given bird will overweight After airframe assembled finished sanded bad spots puttied recommend cover balsa parts clear dope tissue coat primer coat epoxy color should give good light finish next column will discuss en gines props fuel limited rework procedures address 4803 Fallon P1 Dallas TX 75227 Safe Flying No Accident August1976 83 crisp lines slice Through sky Matador ready battle stream L wo spars sheeted leading trailing edge pivoted Stabilator lined motor pod locked wing having Please send illustrated carried ends plywood tailbooms hardware wire catalogofmodelsandaccessorles supplied including bushed aluminum 3 bellcrank Enclosed 25t components forthe bladdertype pressure tank 42 wing /RIcE\ __________________ U-Control model 35 cu engines Fast Combat Rich Von Lopez13 ______________________KIT #248
Edition: Model Aviation - 1976/08
Page Numbers: 47, 48, 49, 50, 82, 83
tI7i iQsQcjr Earlier Ellipsoar right published Sail plane 1970 T-tailed Tellipsoar left resulted seven years Constant development THE TELLIPSOAR high-perform ance Standard Class RC sailplane rugged gentle enough beginner overnight dream developed over period seven years original design called Ellip soar published Sailplane 1970 name came wing stab design wing stab ellip tical planform wing ellipti cal dihedral 1969 elliptical dihedral very rare several years later Hobie Alter realized performance advan tages incorporated elliptical dihedral Hobie Hawk During first four years changed airfoil span year original design 7-ft wing span Eppler E-387 airfoil won several contests design finished year fifth place ECSS During next three years tried 9-ft wing Eppler E-385 9-ft wing Eppler E-387 11-ft wing flat-bottom Standard class sailplane has frequently demonstrated its superiority over first-class competition George Durney Eppler 385 eleven-year-old son Doug built fuselage always second choice four wings During period time won 28 trophies managed finish year top ten ECSS spring 1974 started draw ings new design called Tellipsoar because T-tail configuration no intention completing aircraft until fall Several weeks prior York PA contest year holding Right Canopy removed show installation Kraft brick Although fuselage construction up builder glass pod boom fin canopy outline commercially available local contest practice FAI Glider Contest asked CD Aerolympics son Doug flying Ellipsoar original wing end first two events far ahead field embarrassing speed event same story came through final gate two feet off ground four seconds ahead field However jubila tion turned right instead left took goal post about 40 mph Need less say goal post won evening begged help him build Tellipsoar before York contest already carved plug fuseAugust 1976 47 Tellipsoar spreads its graceful wings ellip tical dihedral elliptical planform efficient wing configuration possible Tellipsoar lage good friend said would take molds furnish fuselage pieces agreed build stab assemble fuselage Doug would build wing Well make long story short finished airplane day before York contest managed get test flight prior meet day York contest arrived flying task hA scale runway believe Doug won per fect score15 minutes nose three perfect 100-point landings per formance left Otto Heithecker Don Goughnour Kelly Pike mouths open convinced Tellipsoar real winner During next year discovered real secret success story Tellip soar very high-performance sailplane will everything want want happen has very positive control stable enough real novice have flown several com plete flights including launch touching transmitter ask change flight altitudes never hesi tates down wind slow speeds Please dont let wing stab design scare Once have building jig can build wing less time other sailplane wing have built need make jig some scrap plywood paneling Cut shaped sup ports -in ply -in board Cut building surface -in ply wall paneling After have nailed jig together can build wing anywhere wife can spare four feet area have building space entire 100 jig suggest build two halves bolt together center way can build entire wing two evenings After have completed jig line up plans board Next cut glue entire bottom sheeting including cap strips center section place next operation attach three bottom X 3/16 spars sheeting can install ribs sub-leading edge primary top spar After have stalled brass tubing install second ary top spars spar webs making sure use plywood vertical grain balsa shown plans final operation before removing wing 48 Model Aviation Hitting spot like falling off log posi tive control response exists downwind low speed Stability enough novice plans install top sheeting After wing removed building jig trim top bottom sheet ing attach leading edge shape leading edge attach ply wood center-section ribs Before leaving wing have several comments First make sure bottom sheeting spars stay down building jig during assem bly will present no problem use balsa spars spruce absolutely un necessary Second attach tips several pieces plastic tape will amazed much shock will absorb doing damage wing tip Building full-flying horizontal stab difficult requires little explanation Glue spar place lower sheeting secure sheeting building board under inboard end spar Next prop up leading trailing edges 3/16 sheet ing Glue ribs brass tubes place attach top sheeting method will insure straight assembly warp After assembly has dried remove building board shape leading trailing edges attach plywood center ribs Tellipsoars built date have incorporated fiberglass fuselage shown plans Fiberglass provides light tough fuselage no reai reason fuselage could molded balsa built up balsa balsa plywood foam desire recommend either carve plug pour molds make fiberglass fuselage better yet buy fiberglass parts ready assembly assembled pod one-piece boom no seam canopy frame vertical fin weight compartment tube cover avail able $30 Mr Thomas Townsend U author about make test flight early Tellipsoar Although has very high performance has made several hops cluding launch touching transmitter 50 Model Aviation Tellipsoar RD #3 Box 589 Milford DE 19963 high-quality cloth-reinforced polyester resin parts can finished almost choice paint prefer refrigerator enamel dope lacquer polyurethane epoxy work fine As assembly fuselage prefer install nyrod linkage continued page 82 Top The building jig elliptical wing assem bled located flat surface Jig does take little time wing builds quickly build jig big plus Above Douglas Durney checking alignment finished wing Yes boy did build Right Wing jig separated centerline makes easy storage Note 1/16-in deep saw cuts bottom paneling allowing easy bending elliptical shape Below Finished components young Douglas sailplane foreground fiberglass parts dads ship Tube making optional bal last compartment See plan side view HIGH PERFORMANCE * COMPETITION PROVEN * THIN RIGID BLADES OF HARD MAPLE WOOD SUPERBLY FINISHED COMPLETELY FUEL PROOF SPECIAL PRO SERIES 2 P OR RCFREE FLIGHT CONTROL LINE DIA PITCH PRICE 5%3485 63485 733%4110 83%456115 945677%125 10467130 106VV 8W130 10GEW135 114677% 7A7%8145 1166W150 11%67150 126155 125W160 1356195 1456225 1556275 164%6350 W WIDE BLADE EW EXTRA WIDE SERIES 400 B FOR SPEED & RACING ADVANCED DESIGN NO 1 IN PYLON RACING LEADING SPEED RECORD HOLDER OP ALL TIMES CL Racing continued shut down TR activity since Texas TR hotbeds during 73 74 raced Goodyear Late 74 decided make effort 75 Team Trials began scratching gether new plane engine significant problem nearest suitable practice site 200-mile oneway trip Believe entire 14 months preparation Trials Lake Charles drive 200 miles either Fort Worth Dallas flying sites time wanted prac tice try-out anything new Plaunts preparations World Champs can best summed up quoting part letter Jim main concern just place fly probably will make changes Champs several rea sons may able practice no place fly Also will find out Sue absolute begin ners TR compared rest Team 'Going out limb bunch new stuff would foul us up actually have lot experience Goodyear TR will stick stuff know Also lack flying site severely impairs ability try new things third-place team composed Bill Wright Jim Dunkin Kansas City MO first time US team Bill Jim represented us 1968 1970 1972 Bill 41 years old married two children advertising graphics designer Bill has flying model airplanes since five years old getting Control Line 1949 flying things 60 Speed job Olathe Nats has mostly Control Line small amount Free Flight Bill started Team Race 1962 teamed up Jim Dun kin first contest 10th KOI December 1963 took first place Jim 36 single works Mis souri State Highway Department spector started flying late 50s mostly Control Line time did own Indoor hand-launch glider record Jim tells story 75 qualifVing Nats near disaster creamed best plane Rossi contest St Louis two weeks before trials two other planes almost done didnt expect have use moved shut-off refueler valve up make little accessi able doing also moved back behind motor plate Unknown us time put filler tube tank low pressure area caused us run engine much richer order draw against slight vacuum cost us bunch laps some speed main trouble Nats coupled rebuilt engine creamed St Louis piston sleeve wearing out lucked out made team adding some hot stuff fuel some extra speed still short laps accelerated demise engine until shot Nats time spent next two months trying find problem Finally figured out moved valves forward leading edge wing both planes laps came right back though speed down due engine being good least system back normal could concentrate engine prop fuel combination able tell what going address 3533 Tamarisk Lane Missouri City TX 77459 Tellipsoar/Durney continued page 50 vertical fin before attaching boom point should attach horizontal stab fin make sure aligned both planes before securing rear fin post place Also make sure stab linkage good free too much play action Next assemble fin boom reinforce sides recommend attach rudder rudder nyrod Now can set boom assembly aside install weight compartment brass tubes wing wires point ready make final assembly between pod boom Attach stab vertical fin wing pod provides good reference correct alignment Rough up inside boom outside pod epoxy two together checking alignment between wing stab making sure angle between pod boom shown drawing Also make sure pod boom straight line vertical plane Finishing model point rather straightforward presents little problem prefer Monokote wing stab silk dope other covering will work preference trans parent Monokote because excellent visibility provides fact lot easier lungs Almost radio can installed Tellipsoar will accommodate popular bricks servo trays Mount battery far forward possible use styrofoam make sure stays opinion battery should always mounted ahead receiver servos because heaviest part air borne pack could lot damage rest radio event crash Add lead shot nose-weight com 82 Model Aviation RC PYLON RACING DIA PITCHPRICE 5314110 756125 7SN 6N125 81 6%77%150 96%77%150 CONTROL LINE SPEED & RACING DIAPITCHPRICE 4/6%110 4%55%110 6768%120 77%10A11128 88135 89N 9%N135 8%77%140 91212150 NNARROW Langleys Model Aero Engine 1903 Robert Meyer Curator National Air & Space Museum Smithsonian Institution Illustrated orical Collectors Item $500 Cumberland Press 4926 Del Ray Avenue Bethesda Maryland 20014 Name Addrns City ____________________ 7in miowes PRODUCTS CD 400 South Indiana St Hobart Indiana 46342 partment balance model shown plans builder doesnt get carried away paint covering stab fin model will balance two ounces tare weight Hand glide model check trim ready try first launch recommend locate tow hook approximately ahead CG first several launches move back /4 time until approximately 1 behind CG further back can move tow hook sailplane becoming too unstable during tow higher launch can obtain using electric winch keep speed down will use up less line 0-10 knot winds prefer fly air plane additional weight Above 10 knots can add up lb lead weight compartment using 4-oz slug place third tube back front want 8 oz additional weight place lead slugs second fourth holes want 12 oz use back three holes arrangements will maintain CG loca tion very windy conditions slope soaring place fourth weight front tube will shift CG slightly ward better handling Good luck send photographs trophies CL Speed/Bussell continued page 31 made out /2 thick bass over length will approximately 19 long approximate length Harters pan after pan cut match diameter Supertigre 29 spinner engine mounted Lets make wing /t thick hard 6 lb 8 lb C grain balsa can save little weight over bass wing very important big airframe wing will 25 long 6 root 4 tip chord Use /8 X 3 bass maple spar mount control system tie down bolts wing leading edge straight wing taper trailing edge airfoil symmetrical 30% high point Stab stab going measure 39 sq in area should made 3/16 hard balsa root chord 3 tip chord 2 overall length 13 rest design very similar construction techniques speed ship cowl height shape depends engine used personal preference fuselage top should made hard balsa again wing location found 90 sq design pre-assembling component parts airframe moving wing fore aft until C/G located right line outlet Allow about 70 100 nose drop allow paint perma nently attach wing top crutch carving wing always leave flat section bottom wide enough mount wing crutch comes time permanently mount wing top crutch dont have measure wing alignment know wing mounted 00 angle attack very important wing stab mounted 00 angle attack engine thrust line Finish finish big airframe very important care should given bird will overweight After airframe assembled finished sanded bad spots puttied recommend cover balsa parts clear dope tissue coat primer coat epoxy color should give good light finish next column will discuss en gines props fuel limited rework procedures address 4803 Fallon P1 Dallas TX 75227 Safe Flying No Accident August1976 83 crisp lines slice Through sky Matador ready battle stream L wo spars sheeted leading trailing edge pivoted Stabilator lined motor pod locked wing having Please send illustrated carried ends plywood tailbooms hardware wire catalogofmodelsandaccessorles supplied including bushed aluminum 3 bellcrank Enclosed 25t components forthe bladdertype pressure tank 42 wing /RIcE\ __________________ U-Control model 35 cu engines Fast Combat Rich Von Lopez13 ______________________KIT #248
Edition: Model Aviation - 1976/08
Page Numbers: 47, 48, 49, 50, 82, 83
tI7i iQsQcjr Earlier Ellipsoar right published Sail plane 1970 T-tailed Tellipsoar left resulted seven years Constant development THE TELLIPSOAR high-perform ance Standard Class RC sailplane rugged gentle enough beginner overnight dream developed over period seven years original design called Ellip soar published Sailplane 1970 name came wing stab design wing stab ellip tical planform wing ellipti cal dihedral 1969 elliptical dihedral very rare several years later Hobie Alter realized performance advan tages incorporated elliptical dihedral Hobie Hawk During first four years changed airfoil span year original design 7-ft wing span Eppler E-387 airfoil won several contests design finished year fifth place ECSS During next three years tried 9-ft wing Eppler E-385 9-ft wing Eppler E-387 11-ft wing flat-bottom Standard class sailplane has frequently demonstrated its superiority over first-class competition George Durney Eppler 385 eleven-year-old son Doug built fuselage always second choice four wings During period time won 28 trophies managed finish year top ten ECSS spring 1974 started draw ings new design called Tellipsoar because T-tail configuration no intention completing aircraft until fall Several weeks prior York PA contest year holding Right Canopy removed show installation Kraft brick Although fuselage construction up builder glass pod boom fin canopy outline commercially available local contest practice FAI Glider Contest asked CD Aerolympics son Doug flying Ellipsoar original wing end first two events far ahead field embarrassing speed event same story came through final gate two feet off ground four seconds ahead field However jubila tion turned right instead left took goal post about 40 mph Need less say goal post won evening begged help him build Tellipsoar before York contest already carved plug fuseAugust 1976 47 Tellipsoar spreads its graceful wings ellip tical dihedral elliptical planform efficient wing configuration possible Tellipsoar lage good friend said would take molds furnish fuselage pieces agreed build stab assemble fuselage Doug would build wing Well make long story short finished airplane day before York contest managed get test flight prior meet day York contest arrived flying task hA scale runway believe Doug won per fect score15 minutes nose three perfect 100-point landings per formance left Otto Heithecker Don Goughnour Kelly Pike mouths open convinced Tellipsoar real winner During next year discovered real secret success story Tellip soar very high-performance sailplane will everything want want happen has very positive control stable enough real novice have flown several com plete flights including launch touching transmitter ask change flight altitudes never hesi tates down wind slow speeds Please dont let wing stab design scare Once have building jig can build wing less time other sailplane wing have built need make jig some scrap plywood paneling Cut shaped sup ports -in ply -in board Cut building surface -in ply wall paneling After have nailed jig together can build wing anywhere wife can spare four feet area have building space entire 100 jig suggest build two halves bolt together center way can build entire wing two evenings After have completed jig line up plans board Next cut glue entire bottom sheeting including cap strips center section place next operation attach three bottom X 3/16 spars sheeting can install ribs sub-leading edge primary top spar After have stalled brass tubing install second ary top spars spar webs making sure use plywood vertical grain balsa shown plans final operation before removing wing 48 Model Aviation Hitting spot like falling off log posi tive control response exists downwind low speed Stability enough novice plans install top sheeting After wing removed building jig trim top bottom sheet ing attach leading edge shape leading edge attach ply wood center-section ribs Before leaving wing have several comments First make sure bottom sheeting spars stay down building jig during assem bly will present no problem use balsa spars spruce absolutely un necessary Second attach tips several pieces plastic tape will amazed much shock will absorb doing damage wing tip Building full-flying horizontal stab difficult requires little explanation Glue spar place lower sheeting secure sheeting building board under inboard end spar Next prop up leading trailing edges 3/16 sheet ing Glue ribs brass tubes place attach top sheeting method will insure straight assembly warp After assembly has dried remove building board shape leading trailing edges attach plywood center ribs Tellipsoars built date have incorporated fiberglass fuselage shown plans Fiberglass provides light tough fuselage no reai reason fuselage could molded balsa built up balsa balsa plywood foam desire recommend either carve plug pour molds make fiberglass fuselage better yet buy fiberglass parts ready assembly assembled pod one-piece boom no seam canopy frame vertical fin weight compartment tube cover avail able $30 Mr Thomas Townsend U author about make test flight early Tellipsoar Although has very high performance has made several hops cluding launch touching transmitter 50 Model Aviation Tellipsoar RD #3 Box 589 Milford DE 19963 high-quality cloth-reinforced polyester resin parts can finished almost choice paint prefer refrigerator enamel dope lacquer polyurethane epoxy work fine As assembly fuselage prefer install nyrod linkage continued page 82 Top The building jig elliptical wing assem bled located flat surface Jig does take little time wing builds quickly build jig big plus Above Douglas Durney checking alignment finished wing Yes boy did build Right Wing jig separated centerline makes easy storage Note 1/16-in deep saw cuts bottom paneling allowing easy bending elliptical shape Below Finished components young Douglas sailplane foreground fiberglass parts dads ship Tube making optional bal last compartment See plan side view HIGH PERFORMANCE * COMPETITION PROVEN * THIN RIGID BLADES OF HARD MAPLE WOOD SUPERBLY FINISHED COMPLETELY FUEL PROOF SPECIAL PRO SERIES 2 P OR RCFREE FLIGHT CONTROL LINE DIA PITCH PRICE 5%3485 63485 733%4110 83%456115 945677%125 10467130 106VV 8W130 10GEW135 114677% 7A7%8145 1166W150 11%67150 126155 125W160 1356195 1456225 1556275 164%6350 W WIDE BLADE EW EXTRA WIDE SERIES 400 B FOR SPEED & RACING ADVANCED DESIGN NO 1 IN PYLON RACING LEADING SPEED RECORD HOLDER OP ALL TIMES CL Racing continued shut down TR activity since Texas TR hotbeds during 73 74 raced Goodyear Late 74 decided make effort 75 Team Trials began scratching gether new plane engine significant problem nearest suitable practice site 200-mile oneway trip Believe entire 14 months preparation Trials Lake Charles drive 200 miles either Fort Worth Dallas flying sites time wanted prac tice try-out anything new Plaunts preparations World Champs can best summed up quoting part letter Jim main concern just place fly probably will make changes Champs several rea sons may able practice no place fly Also will find out Sue absolute begin ners TR compared rest Team 'Going out limb bunch new stuff would foul us up actually have lot experience Goodyear TR will stick stuff know Also lack flying site severely impairs ability try new things third-place team composed Bill Wright Jim Dunkin Kansas City MO first time US team Bill Jim represented us 1968 1970 1972 Bill 41 years old married two children advertising graphics designer Bill has flying model airplanes since five years old getting Control Line 1949 flying things 60 Speed job Olathe Nats has mostly Control Line small amount Free Flight Bill started Team Race 1962 teamed up Jim Dun kin first contest 10th KOI December 1963 took first place Jim 36 single works Mis souri State Highway Department spector started flying late 50s mostly Control Line time did own Indoor hand-launch glider record Jim tells story 75 qualifVing Nats near disaster creamed best plane Rossi contest St Louis two weeks before trials two other planes almost done didnt expect have use moved shut-off refueler valve up make little accessi able doing also moved back behind motor plate Unknown us time put filler tube tank low pressure area caused us run engine much richer order draw against slight vacuum cost us bunch laps some speed main trouble Nats coupled rebuilt engine creamed St Louis piston sleeve wearing out lucked out made team adding some hot stuff fuel some extra speed still short laps accelerated demise engine until shot Nats time spent next two months trying find problem Finally figured out moved valves forward leading edge wing both planes laps came right back though speed down due engine being good least system back normal could concentrate engine prop fuel combination able tell what going address 3533 Tamarisk Lane Missouri City TX 77459 Tellipsoar/Durney continued page 50 vertical fin before attaching boom point should attach horizontal stab fin make sure aligned both planes before securing rear fin post place Also make sure stab linkage good free too much play action Next assemble fin boom reinforce sides recommend attach rudder rudder nyrod Now can set boom assembly aside install weight compartment brass tubes wing wires point ready make final assembly between pod boom Attach stab vertical fin wing pod provides good reference correct alignment Rough up inside boom outside pod epoxy two together checking alignment between wing stab making sure angle between pod boom shown drawing Also make sure pod boom straight line vertical plane Finishing model point rather straightforward presents little problem prefer Monokote wing stab silk dope other covering will work preference trans parent Monokote because excellent visibility provides fact lot easier lungs Almost radio can installed Tellipsoar will accommodate popular bricks servo trays Mount battery far forward possible use styrofoam make sure stays opinion battery should always mounted ahead receiver servos because heaviest part air borne pack could lot damage rest radio event crash Add lead shot nose-weight com 82 Model Aviation RC PYLON RACING DIA PITCHPRICE 5314110 756125 7SN 6N125 81 6%77%150 96%77%150 CONTROL LINE SPEED & RACING DIAPITCHPRICE 4/6%110 4%55%110 6768%120 77%10A11128 88135 89N 9%N135 8%77%140 91212150 NNARROW Langleys Model Aero Engine 1903 Robert Meyer Curator National Air & Space Museum Smithsonian Institution Illustrated orical Collectors Item $500 Cumberland Press 4926 Del Ray Avenue Bethesda Maryland 20014 Name Addrns City ____________________ 7in miowes PRODUCTS CD 400 South Indiana St Hobart Indiana 46342 partment balance model shown plans builder doesnt get carried away paint covering stab fin model will balance two ounces tare weight Hand glide model check trim ready try first launch recommend locate tow hook approximately ahead CG first several launches move back /4 time until approximately 1 behind CG further back can move tow hook sailplane becoming too unstable during tow higher launch can obtain using electric winch keep speed down will use up less line 0-10 knot winds prefer fly air plane additional weight Above 10 knots can add up lb lead weight compartment using 4-oz slug place third tube back front want 8 oz additional weight place lead slugs second fourth holes want 12 oz use back three holes arrangements will maintain CG loca tion very windy conditions slope soaring place fourth weight front tube will shift CG slightly ward better handling Good luck send photographs trophies CL Speed/Bussell continued page 31 made out /2 thick bass over length will approximately 19 long approximate length Harters pan after pan cut match diameter Supertigre 29 spinner engine mounted Lets make wing /t thick hard 6 lb 8 lb C grain balsa can save little weight over bass wing very important big airframe wing will 25 long 6 root 4 tip chord Use /8 X 3 bass maple spar mount control system tie down bolts wing leading edge straight wing taper trailing edge airfoil symmetrical 30% high point Stab stab going measure 39 sq in area should made 3/16 hard balsa root chord 3 tip chord 2 overall length 13 rest design very similar construction techniques speed ship cowl height shape depends engine used personal preference fuselage top should made hard balsa again wing location found 90 sq design pre-assembling component parts airframe moving wing fore aft until C/G located right line outlet Allow about 70 100 nose drop allow paint perma nently attach wing top crutch carving wing always leave flat section bottom wide enough mount wing crutch comes time permanently mount wing top crutch dont have measure wing alignment know wing mounted 00 angle attack very important wing stab mounted 00 angle attack engine thrust line Finish finish big airframe very important care should given bird will overweight After airframe assembled finished sanded bad spots puttied recommend cover balsa parts clear dope tissue coat primer coat epoxy color should give good light finish next column will discuss en gines props fuel limited rework procedures address 4803 Fallon P1 Dallas TX 75227 Safe Flying No Accident August1976 83 crisp lines slice Through sky Matador ready battle stream L wo spars sheeted leading trailing edge pivoted Stabilator lined motor pod locked wing having Please send illustrated carried ends plywood tailbooms hardware wire catalogofmodelsandaccessorles supplied including bushed aluminum 3 bellcrank Enclosed 25t components forthe bladdertype pressure tank 42 wing /RIcE\ __________________ U-Control model 35 cu engines Fast Combat Rich Von Lopez13 ______________________KIT #248
Edition: Model Aviation - 1976/08
Page Numbers: 47, 48, 49, 50, 82, 83
tI7i iQsQcjr Earlier Ellipsoar right published Sail plane 1970 T-tailed Tellipsoar left resulted seven years Constant development THE TELLIPSOAR high-perform ance Standard Class RC sailplane rugged gentle enough beginner overnight dream developed over period seven years original design called Ellip soar published Sailplane 1970 name came wing stab design wing stab ellip tical planform wing ellipti cal dihedral 1969 elliptical dihedral very rare several years later Hobie Alter realized performance advan tages incorporated elliptical dihedral Hobie Hawk During first four years changed airfoil span year original design 7-ft wing span Eppler E-387 airfoil won several contests design finished year fifth place ECSS During next three years tried 9-ft wing Eppler E-385 9-ft wing Eppler E-387 11-ft wing flat-bottom Standard class sailplane has frequently demonstrated its superiority over first-class competition George Durney Eppler 385 eleven-year-old son Doug built fuselage always second choice four wings During period time won 28 trophies managed finish year top ten ECSS spring 1974 started draw ings new design called Tellipsoar because T-tail configuration no intention completing aircraft until fall Several weeks prior York PA contest year holding Right Canopy removed show installation Kraft brick Although fuselage construction up builder glass pod boom fin canopy outline commercially available local contest practice FAI Glider Contest asked CD Aerolympics son Doug flying Ellipsoar original wing end first two events far ahead field embarrassing speed event same story came through final gate two feet off ground four seconds ahead field However jubila tion turned right instead left took goal post about 40 mph Need less say goal post won evening begged help him build Tellipsoar before York contest already carved plug fuseAugust 1976 47 Tellipsoar spreads its graceful wings ellip tical dihedral elliptical planform efficient wing configuration possible Tellipsoar lage good friend said would take molds furnish fuselage pieces agreed build stab assemble fuselage Doug would build wing Well make long story short finished airplane day before York contest managed get test flight prior meet day York contest arrived flying task hA scale runway believe Doug won per fect score15 minutes nose three perfect 100-point landings per formance left Otto Heithecker Don Goughnour Kelly Pike mouths open convinced Tellipsoar real winner During next year discovered real secret success story Tellip soar very high-performance sailplane will everything want want happen has very positive control stable enough real novice have flown several com plete flights including launch touching transmitter ask change flight altitudes never hesi tates down wind slow speeds Please dont let wing stab design scare Once have building jig can build wing less time other sailplane wing have built need make jig some scrap plywood paneling Cut shaped sup ports -in ply -in board Cut building surface -in ply wall paneling After have nailed jig together can build wing anywhere wife can spare four feet area have building space entire 100 jig suggest build two halves bolt together center way can build entire wing two evenings After have completed jig line up plans board Next cut glue entire bottom sheeting including cap strips center section place next operation attach three bottom X 3/16 spars sheeting can install ribs sub-leading edge primary top spar After have stalled brass tubing install second ary top spars spar webs making sure use plywood vertical grain balsa shown plans final operation before removing wing 48 Model Aviation Hitting spot like falling off log posi tive control response exists downwind low speed Stability enough novice plans install top sheeting After wing removed building jig trim top bottom sheet ing attach leading edge shape leading edge attach ply wood center-section ribs Before leaving wing have several comments First make sure bottom sheeting spars stay down building jig during assem bly will present no problem use balsa spars spruce absolutely un necessary Second attach tips several pieces plastic tape will amazed much shock will absorb doing damage wing tip Building full-flying horizontal stab difficult requires little explanation Glue spar place lower sheeting secure sheeting building board under inboard end spar Next prop up leading trailing edges 3/16 sheet ing Glue ribs brass tubes place attach top sheeting method will insure straight assembly warp After assembly has dried remove building board shape leading trailing edges attach plywood center ribs Tellipsoars built date have incorporated fiberglass fuselage shown plans Fiberglass provides light tough fuselage no reai reason fuselage could molded balsa built up balsa balsa plywood foam desire recommend either carve plug pour molds make fiberglass fuselage better yet buy fiberglass parts ready assembly assembled pod one-piece boom no seam canopy frame vertical fin weight compartment tube cover avail able $30 Mr Thomas Townsend U author about make test flight early Tellipsoar Although has very high performance has made several hops cluding launch touching transmitter 50 Model Aviation Tellipsoar RD #3 Box 589 Milford DE 19963 high-quality cloth-reinforced polyester resin parts can finished almost choice paint prefer refrigerator enamel dope lacquer polyurethane epoxy work fine As assembly fuselage prefer install nyrod linkage continued page 82 Top The building jig elliptical wing assem bled located flat surface Jig does take little time wing builds quickly build jig big plus Above Douglas Durney checking alignment finished wing Yes boy did build Right Wing jig separated centerline makes easy storage Note 1/16-in deep saw cuts bottom paneling allowing easy bending elliptical shape Below Finished components young Douglas sailplane foreground fiberglass parts dads ship Tube making optional bal last compartment See plan side view HIGH PERFORMANCE * COMPETITION PROVEN * THIN RIGID BLADES OF HARD MAPLE WOOD SUPERBLY FINISHED COMPLETELY FUEL PROOF SPECIAL PRO SERIES 2 P OR RCFREE FLIGHT CONTROL LINE DIA PITCH PRICE 5%3485 63485 733%4110 83%456115 945677%125 10467130 106VV 8W130 10GEW135 114677% 7A7%8145 1166W150 11%67150 126155 125W160 1356195 1456225 1556275 164%6350 W WIDE BLADE EW EXTRA WIDE SERIES 400 B FOR SPEED & RACING ADVANCED DESIGN NO 1 IN PYLON RACING LEADING SPEED RECORD HOLDER OP ALL TIMES CL Racing continued shut down TR activity since Texas TR hotbeds during 73 74 raced Goodyear Late 74 decided make effort 75 Team Trials began scratching gether new plane engine significant problem nearest suitable practice site 200-mile oneway trip Believe entire 14 months preparation Trials Lake Charles drive 200 miles either Fort Worth Dallas flying sites time wanted prac tice try-out anything new Plaunts preparations World Champs can best summed up quoting part letter Jim main concern just place fly probably will make changes Champs several rea sons may able practice no place fly Also will find out Sue absolute begin ners TR compared rest Team 'Going out limb bunch new stuff would foul us up actually have lot experience Goodyear TR will stick stuff know Also lack flying site severely impairs ability try new things third-place team composed Bill Wright Jim Dunkin Kansas City MO first time US team Bill Jim represented us 1968 1970 1972 Bill 41 years old married two children advertising graphics designer Bill has flying model airplanes since five years old getting Control Line 1949 flying things 60 Speed job Olathe Nats has mostly Control Line small amount Free Flight Bill started Team Race 1962 teamed up Jim Dun kin first contest 10th KOI December 1963 took first place Jim 36 single works Mis souri State Highway Department spector started flying late 50s mostly Control Line time did own Indoor hand-launch glider record Jim tells story 75 qualifVing Nats near disaster creamed best plane Rossi contest St Louis two weeks before trials two other planes almost done didnt expect have use moved shut-off refueler valve up make little accessi able doing also moved back behind motor plate Unknown us time put filler tube tank low pressure area caused us run engine much richer order draw against slight vacuum cost us bunch laps some speed main trouble Nats coupled rebuilt engine creamed St Louis piston sleeve wearing out lucked out made team adding some hot stuff fuel some extra speed still short laps accelerated demise engine until shot Nats time spent next two months trying find problem Finally figured out moved valves forward leading edge wing both planes laps came right back though speed down due engine being good least system back normal could concentrate engine prop fuel combination able tell what going address 3533 Tamarisk Lane Missouri City TX 77459 Tellipsoar/Durney continued page 50 vertical fin before attaching boom point should attach horizontal stab fin make sure aligned both planes before securing rear fin post place Also make sure stab linkage good free too much play action Next assemble fin boom reinforce sides recommend attach rudder rudder nyrod Now can set boom assembly aside install weight compartment brass tubes wing wires point ready make final assembly between pod boom Attach stab vertical fin wing pod provides good reference correct alignment Rough up inside boom outside pod epoxy two together checking alignment between wing stab making sure angle between pod boom shown drawing Also make sure pod boom straight line vertical plane Finishing model point rather straightforward presents little problem prefer Monokote wing stab silk dope other covering will work preference trans parent Monokote because excellent visibility provides fact lot easier lungs Almost radio can installed Tellipsoar will accommodate popular bricks servo trays Mount battery far forward possible use styrofoam make sure stays opinion battery should always mounted ahead receiver servos because heaviest part air borne pack could lot damage rest radio event crash Add lead shot nose-weight com 82 Model Aviation RC PYLON RACING DIA PITCHPRICE 5314110 756125 7SN 6N125 81 6%77%150 96%77%150 CONTROL LINE SPEED & RACING DIAPITCHPRICE 4/6%110 4%55%110 6768%120 77%10A11128 88135 89N 9%N135 8%77%140 91212150 NNARROW Langleys Model Aero Engine 1903 Robert Meyer Curator National Air & Space Museum Smithsonian Institution Illustrated orical Collectors Item $500 Cumberland Press 4926 Del Ray Avenue Bethesda Maryland 20014 Name Addrns City ____________________ 7in miowes PRODUCTS CD 400 South Indiana St Hobart Indiana 46342 partment balance model shown plans builder doesnt get carried away paint covering stab fin model will balance two ounces tare weight Hand glide model check trim ready try first launch recommend locate tow hook approximately ahead CG first several launches move back /4 time until approximately 1 behind CG further back can move tow hook sailplane becoming too unstable during tow higher launch can obtain using electric winch keep speed down will use up less line 0-10 knot winds prefer fly air plane additional weight Above 10 knots can add up lb lead weight compartment using 4-oz slug place third tube back front want 8 oz additional weight place lead slugs second fourth holes want 12 oz use back three holes arrangements will maintain CG loca tion very windy conditions slope soaring place fourth weight front tube will shift CG slightly ward better handling Good luck send photographs trophies CL Speed/Bussell continued page 31 made out /2 thick bass over length will approximately 19 long approximate length Harters pan after pan cut match diameter Supertigre 29 spinner engine mounted Lets make wing /t thick hard 6 lb 8 lb C grain balsa can save little weight over bass wing very important big airframe wing will 25 long 6 root 4 tip chord Use /8 X 3 bass maple spar mount control system tie down bolts wing leading edge straight wing taper trailing edge airfoil symmetrical 30% high point Stab stab going measure 39 sq in area should made 3/16 hard balsa root chord 3 tip chord 2 overall length 13 rest design very similar construction techniques speed ship cowl height shape depends engine used personal preference fuselage top should made hard balsa again wing location found 90 sq design pre-assembling component parts airframe moving wing fore aft until C/G located right line outlet Allow about 70 100 nose drop allow paint perma nently attach wing top crutch carving wing always leave flat section bottom wide enough mount wing crutch comes time permanently mount wing top crutch dont have measure wing alignment know wing mounted 00 angle attack very important wing stab mounted 00 angle attack engine thrust line Finish finish big airframe very important care should given bird will overweight After airframe assembled finished sanded bad spots puttied recommend cover balsa parts clear dope tissue coat primer coat epoxy color should give good light finish next column will discuss en gines props fuel limited rework procedures address 4803 Fallon P1 Dallas TX 75227 Safe Flying No Accident August1976 83 crisp lines slice Through sky Matador ready battle stream L wo spars sheeted leading trailing edge pivoted Stabilator lined motor pod locked wing having Please send illustrated carried ends plywood tailbooms hardware wire catalogofmodelsandaccessorles supplied including bushed aluminum 3 bellcrank Enclosed 25t components forthe bladdertype pressure tank 42 wing /RIcE\ __________________ U-Control model 35 cu engines Fast Combat Rich Von Lopez13 ______________________KIT #248
Edition: Model Aviation - 1976/08
Page Numbers: 47, 48, 49, 50, 82, 83
tI7i iQsQcjr Earlier Ellipsoar right published Sail plane 1970 T-tailed Tellipsoar left resulted seven years Constant development THE TELLIPSOAR high-perform ance Standard Class RC sailplane rugged gentle enough beginner overnight dream developed over period seven years original design called Ellip soar published Sailplane 1970 name came wing stab design wing stab ellip tical planform wing ellipti cal dihedral 1969 elliptical dihedral very rare several years later Hobie Alter realized performance advan tages incorporated elliptical dihedral Hobie Hawk During first four years changed airfoil span year original design 7-ft wing span Eppler E-387 airfoil won several contests design finished year fifth place ECSS During next three years tried 9-ft wing Eppler E-385 9-ft wing Eppler E-387 11-ft wing flat-bottom Standard class sailplane has frequently demonstrated its superiority over first-class competition George Durney Eppler 385 eleven-year-old son Doug built fuselage always second choice four wings During period time won 28 trophies managed finish year top ten ECSS spring 1974 started draw ings new design called Tellipsoar because T-tail configuration no intention completing aircraft until fall Several weeks prior York PA contest year holding Right Canopy removed show installation Kraft brick Although fuselage construction up builder glass pod boom fin canopy outline commercially available local contest practice FAI Glider Contest asked CD Aerolympics son Doug flying Ellipsoar original wing end first two events far ahead field embarrassing speed event same story came through final gate two feet off ground four seconds ahead field However jubila tion turned right instead left took goal post about 40 mph Need less say goal post won evening begged help him build Tellipsoar before York contest already carved plug fuseAugust 1976 47 Tellipsoar spreads its graceful wings ellip tical dihedral elliptical planform efficient wing configuration possible Tellipsoar lage good friend said would take molds furnish fuselage pieces agreed build stab assemble fuselage Doug would build wing Well make long story short finished airplane day before York contest managed get test flight prior meet day York contest arrived flying task hA scale runway believe Doug won per fect score15 minutes nose three perfect 100-point landings per formance left Otto Heithecker Don Goughnour Kelly Pike mouths open convinced Tellipsoar real winner During next year discovered real secret success story Tellip soar very high-performance sailplane will everything want want happen has very positive control stable enough real novice have flown several com plete flights including launch touching transmitter ask change flight altitudes never hesi tates down wind slow speeds Please dont let wing stab design scare Once have building jig can build wing less time other sailplane wing have built need make jig some scrap plywood paneling Cut shaped sup ports -in ply -in board Cut building surface -in ply wall paneling After have nailed jig together can build wing anywhere wife can spare four feet area have building space entire 100 jig suggest build two halves bolt together center way can build entire wing two evenings After have completed jig line up plans board Next cut glue entire bottom sheeting including cap strips center section place next operation attach three bottom X 3/16 spars sheeting can install ribs sub-leading edge primary top spar After have stalled brass tubing install second ary top spars spar webs making sure use plywood vertical grain balsa shown plans final operation before removing wing 48 Model Aviation Hitting spot like falling off log posi tive control response exists downwind low speed Stability enough novice plans install top sheeting After wing removed building jig trim top bottom sheet ing attach leading edge shape leading edge attach ply wood center-section ribs Before leaving wing have several comments First make sure bottom sheeting spars stay down building jig during assem bly will present no problem use balsa spars spruce absolutely un necessary Second attach tips several pieces plastic tape will amazed much shock will absorb doing damage wing tip Building full-flying horizontal stab difficult requires little explanation Glue spar place lower sheeting secure sheeting building board under inboard end spar Next prop up leading trailing edges 3/16 sheet ing Glue ribs brass tubes place attach top sheeting method will insure straight assembly warp After assembly has dried remove building board shape leading trailing edges attach plywood center ribs Tellipsoars built date have incorporated fiberglass fuselage shown plans Fiberglass provides light tough fuselage no reai reason fuselage could molded balsa built up balsa balsa plywood foam desire recommend either carve plug pour molds make fiberglass fuselage better yet buy fiberglass parts ready assembly assembled pod one-piece boom no seam canopy frame vertical fin weight compartment tube cover avail able $30 Mr Thomas Townsend U author about make test flight early Tellipsoar Although has very high performance has made several hops cluding launch touching transmitter 50 Model Aviation Tellipsoar RD #3 Box 589 Milford DE 19963 high-quality cloth-reinforced polyester resin parts can finished almost choice paint prefer refrigerator enamel dope lacquer polyurethane epoxy work fine As assembly fuselage prefer install nyrod linkage continued page 82 Top The building jig elliptical wing assem bled located flat surface Jig does take little time wing builds quickly build jig big plus Above Douglas Durney checking alignment finished wing Yes boy did build Right Wing jig separated centerline makes easy storage Note 1/16-in deep saw cuts bottom paneling allowing easy bending elliptical shape Below Finished components young Douglas sailplane foreground fiberglass parts dads ship Tube making optional bal last compartment See plan side view HIGH PERFORMANCE * COMPETITION PROVEN * THIN RIGID BLADES OF HARD MAPLE WOOD SUPERBLY FINISHED COMPLETELY FUEL PROOF SPECIAL PRO SERIES 2 P OR RCFREE FLIGHT CONTROL LINE DIA PITCH PRICE 5%3485 63485 733%4110 83%456115 945677%125 10467130 106VV 8W130 10GEW135 114677% 7A7%8145 1166W150 11%67150 126155 125W160 1356195 1456225 1556275 164%6350 W WIDE BLADE EW EXTRA WIDE SERIES 400 B FOR SPEED & RACING ADVANCED DESIGN NO 1 IN PYLON RACING LEADING SPEED RECORD HOLDER OP ALL TIMES CL Racing continued shut down TR activity since Texas TR hotbeds during 73 74 raced Goodyear Late 74 decided make effort 75 Team Trials began scratching gether new plane engine significant problem nearest suitable practice site 200-mile oneway trip Believe entire 14 months preparation Trials Lake Charles drive 200 miles either Fort Worth Dallas flying sites time wanted prac tice try-out anything new Plaunts preparations World Champs can best summed up quoting part letter Jim main concern just place fly probably will make changes Champs several rea sons may able practice no place fly Also will find out Sue absolute begin ners TR compared rest Team 'Going out limb bunch new stuff would foul us up actually have lot experience Goodyear TR will stick stuff know Also lack flying site severely impairs ability try new things third-place team composed Bill Wright Jim Dunkin Kansas City MO first time US team Bill Jim represented us 1968 1970 1972 Bill 41 years old married two children advertising graphics designer Bill has flying model airplanes since five years old getting Control Line 1949 flying things 60 Speed job Olathe Nats has mostly Control Line small amount Free Flight Bill started Team Race 1962 teamed up Jim Dun kin first contest 10th KOI December 1963 took first place Jim 36 single works Mis souri State Highway Department spector started flying late 50s mostly Control Line time did own Indoor hand-launch glider record Jim tells story 75 qualifVing Nats near disaster creamed best plane Rossi contest St Louis two weeks before trials two other planes almost done didnt expect have use moved shut-off refueler valve up make little accessi able doing also moved back behind motor plate Unknown us time put filler tube tank low pressure area caused us run engine much richer order draw against slight vacuum cost us bunch laps some speed main trouble Nats coupled rebuilt engine creamed St Louis piston sleeve wearing out lucked out made team adding some hot stuff fuel some extra speed still short laps accelerated demise engine until shot Nats time spent next two months trying find problem Finally figured out moved valves forward leading edge wing both planes laps came right back though speed down due engine being good least system back normal could concentrate engine prop fuel combination able tell what going address 3533 Tamarisk Lane Missouri City TX 77459 Tellipsoar/Durney continued page 50 vertical fin before attaching boom point should attach horizontal stab fin make sure aligned both planes before securing rear fin post place Also make sure stab linkage good free too much play action Next assemble fin boom reinforce sides recommend attach rudder rudder nyrod Now can set boom assembly aside install weight compartment brass tubes wing wires point ready make final assembly between pod boom Attach stab vertical fin wing pod provides good reference correct alignment Rough up inside boom outside pod epoxy two together checking alignment between wing stab making sure angle between pod boom shown drawing Also make sure pod boom straight line vertical plane Finishing model point rather straightforward presents little problem prefer Monokote wing stab silk dope other covering will work preference trans parent Monokote because excellent visibility provides fact lot easier lungs Almost radio can installed Tellipsoar will accommodate popular bricks servo trays Mount battery far forward possible use styrofoam make sure stays opinion battery should always mounted ahead receiver servos because heaviest part air borne pack could lot damage rest radio event crash Add lead shot nose-weight com 82 Model Aviation RC PYLON RACING DIA PITCHPRICE 5314110 756125 7SN 6N125 81 6%77%150 96%77%150 CONTROL LINE SPEED & RACING DIAPITCHPRICE 4/6%110 4%55%110 6768%120 77%10A11128 88135 89N 9%N135 8%77%140 91212150 NNARROW Langleys Model Aero Engine 1903 Robert Meyer Curator National Air & Space Museum Smithsonian Institution Illustrated orical Collectors Item $500 Cumberland Press 4926 Del Ray Avenue Bethesda Maryland 20014 Name Addrns City ____________________ 7in miowes PRODUCTS CD 400 South Indiana St Hobart Indiana 46342 partment balance model shown plans builder doesnt get carried away paint covering stab fin model will balance two ounces tare weight Hand glide model check trim ready try first launch recommend locate tow hook approximately ahead CG first several launches move back /4 time until approximately 1 behind CG further back can move tow hook sailplane becoming too unstable during tow higher launch can obtain using electric winch keep speed down will use up less line 0-10 knot winds prefer fly air plane additional weight Above 10 knots can add up lb lead weight compartment using 4-oz slug place third tube back front want 8 oz additional weight place lead slugs second fourth holes want 12 oz use back three holes arrangements will maintain CG loca tion very windy conditions slope soaring place fourth weight front tube will shift CG slightly ward better handling Good luck send photographs trophies CL Speed/Bussell continued page 31 made out /2 thick bass over length will approximately 19 long approximate length Harters pan after pan cut match diameter Supertigre 29 spinner engine mounted Lets make wing /t thick hard 6 lb 8 lb C grain balsa can save little weight over bass wing very important big airframe wing will 25 long 6 root 4 tip chord Use /8 X 3 bass maple spar mount control system tie down bolts wing leading edge straight wing taper trailing edge airfoil symmetrical 30% high point Stab stab going measure 39 sq in area should made 3/16 hard balsa root chord 3 tip chord 2 overall length 13 rest design very similar construction techniques speed ship cowl height shape depends engine used personal preference fuselage top should made hard balsa again wing location found 90 sq design pre-assembling component parts airframe moving wing fore aft until C/G located right line outlet Allow about 70 100 nose drop allow paint perma nently attach wing top crutch carving wing always leave flat section bottom wide enough mount wing crutch comes time permanently mount wing top crutch dont have measure wing alignment know wing mounted 00 angle attack very important wing stab mounted 00 angle attack engine thrust line Finish finish big airframe very important care should given bird will overweight After airframe assembled finished sanded bad spots puttied recommend cover balsa parts clear dope tissue coat primer coat epoxy color should give good light finish next column will discuss en gines props fuel limited rework procedures address 4803 Fallon P1 Dallas TX 75227 Safe Flying No Accident August1976 83 crisp lines slice Through sky Matador ready battle stream L wo spars sheeted leading trailing edge pivoted Stabilator lined motor pod locked wing having Please send illustrated carried ends plywood tailbooms hardware wire catalogofmodelsandaccessorles supplied including bushed aluminum 3 bellcrank Enclosed 25t components forthe bladdertype pressure tank 42 wing /RIcE\ __________________ U-Control model 35 cu engines Fast Combat Rich Von Lopez13 ______________________KIT #248
Edition: Model Aviation - 1976/08
Page Numbers: 47, 48, 49, 50, 82, 83
tI7i iQsQcjr Earlier Ellipsoar right published Sail plane 1970 T-tailed Tellipsoar left resulted seven years Constant development THE TELLIPSOAR high-perform ance Standard Class RC sailplane rugged gentle enough beginner overnight dream developed over period seven years original design called Ellip soar published Sailplane 1970 name came wing stab design wing stab ellip tical planform wing ellipti cal dihedral 1969 elliptical dihedral very rare several years later Hobie Alter realized performance advan tages incorporated elliptical dihedral Hobie Hawk During first four years changed airfoil span year original design 7-ft wing span Eppler E-387 airfoil won several contests design finished year fifth place ECSS During next three years tried 9-ft wing Eppler E-385 9-ft wing Eppler E-387 11-ft wing flat-bottom Standard class sailplane has frequently demonstrated its superiority over first-class competition George Durney Eppler 385 eleven-year-old son Doug built fuselage always second choice four wings During period time won 28 trophies managed finish year top ten ECSS spring 1974 started draw ings new design called Tellipsoar because T-tail configuration no intention completing aircraft until fall Several weeks prior York PA contest year holding Right Canopy removed show installation Kraft brick Although fuselage construction up builder glass pod boom fin canopy outline commercially available local contest practice FAI Glider Contest asked CD Aerolympics son Doug flying Ellipsoar original wing end first two events far ahead field embarrassing speed event same story came through final gate two feet off ground four seconds ahead field However jubila tion turned right instead left took goal post about 40 mph Need less say goal post won evening begged help him build Tellipsoar before York contest already carved plug fuseAugust 1976 47 Tellipsoar spreads its graceful wings ellip tical dihedral elliptical planform efficient wing configuration possible Tellipsoar lage good friend said would take molds furnish fuselage pieces agreed build stab assemble fuselage Doug would build wing Well make long story short finished airplane day before York contest managed get test flight prior meet day York contest arrived flying task hA scale runway believe Doug won per fect score15 minutes nose three perfect 100-point landings per formance left Otto Heithecker Don Goughnour Kelly Pike mouths open convinced Tellipsoar real winner During next year discovered real secret success story Tellip soar very high-performance sailplane will everything want want happen has very positive control stable enough real novice have flown several com plete flights including launch touching transmitter ask change flight altitudes never hesi tates down wind slow speeds Please dont let wing stab design scare Once have building jig can build wing less time other sailplane wing have built need make jig some scrap plywood paneling Cut shaped sup ports -in ply -in board Cut building surface -in ply wall paneling After have nailed jig together can build wing anywhere wife can spare four feet area have building space entire 100 jig suggest build two halves bolt together center way can build entire wing two evenings After have completed jig line up plans board Next cut glue entire bottom sheeting including cap strips center section place next operation attach three bottom X 3/16 spars sheeting can install ribs sub-leading edge primary top spar After have stalled brass tubing install second ary top spars spar webs making sure use plywood vertical grain balsa shown plans final operation before removing wing 48 Model Aviation Hitting spot like falling off log posi tive control response exists downwind low speed Stability enough novice plans install top sheeting After wing removed building jig trim top bottom sheet ing attach leading edge shape leading edge attach ply wood center-section ribs Before leaving wing have several comments First make sure bottom sheeting spars stay down building jig during assem bly will present no problem use balsa spars spruce absolutely un necessary Second attach tips several pieces plastic tape will amazed much shock will absorb doing damage wing tip Building full-flying horizontal stab difficult requires little explanation Glue spar place lower sheeting secure sheeting building board under inboard end spar Next prop up leading trailing edges 3/16 sheet ing Glue ribs brass tubes place attach top sheeting method will insure straight assembly warp After assembly has dried remove building board shape leading trailing edges attach plywood center ribs Tellipsoars built date have incorporated fiberglass fuselage shown plans Fiberglass provides light tough fuselage no reai reason fuselage could molded balsa built up balsa balsa plywood foam desire recommend either carve plug pour molds make fiberglass fuselage better yet buy fiberglass parts ready assembly assembled pod one-piece boom no seam canopy frame vertical fin weight compartment tube cover avail able $30 Mr Thomas Townsend U author about make test flight early Tellipsoar Although has very high performance has made several hops cluding launch touching transmitter 50 Model Aviation Tellipsoar RD #3 Box 589 Milford DE 19963 high-quality cloth-reinforced polyester resin parts can finished almost choice paint prefer refrigerator enamel dope lacquer polyurethane epoxy work fine As assembly fuselage prefer install nyrod linkage continued page 82 Top The building jig elliptical wing assem bled located flat surface Jig does take little time wing builds quickly build jig big plus Above Douglas Durney checking alignment finished wing Yes boy did build Right Wing jig separated centerline makes easy storage Note 1/16-in deep saw cuts bottom paneling allowing easy bending elliptical shape Below Finished components young Douglas sailplane foreground fiberglass parts dads ship Tube making optional bal last compartment See plan side view HIGH PERFORMANCE * COMPETITION PROVEN * THIN RIGID BLADES OF HARD MAPLE WOOD SUPERBLY FINISHED COMPLETELY FUEL PROOF SPECIAL PRO SERIES 2 P OR RCFREE FLIGHT CONTROL LINE DIA PITCH PRICE 5%3485 63485 733%4110 83%456115 945677%125 10467130 106VV 8W130 10GEW135 114677% 7A7%8145 1166W150 11%67150 126155 125W160 1356195 1456225 1556275 164%6350 W WIDE BLADE EW EXTRA WIDE SERIES 400 B FOR SPEED & RACING ADVANCED DESIGN NO 1 IN PYLON RACING LEADING SPEED RECORD HOLDER OP ALL TIMES CL Racing continued shut down TR activity since Texas TR hotbeds during 73 74 raced Goodyear Late 74 decided make effort 75 Team Trials began scratching gether new plane engine significant problem nearest suitable practice site 200-mile oneway trip Believe entire 14 months preparation Trials Lake Charles drive 200 miles either Fort Worth Dallas flying sites time wanted prac tice try-out anything new Plaunts preparations World Champs can best summed up quoting part letter Jim main concern just place fly probably will make changes Champs several rea sons may able practice no place fly Also will find out Sue absolute begin ners TR compared rest Team 'Going out limb bunch new stuff would foul us up actually have lot experience Goodyear TR will stick stuff know Also lack flying site severely impairs ability try new things third-place team composed Bill Wright Jim Dunkin Kansas City MO first time US team Bill Jim represented us 1968 1970 1972 Bill 41 years old married two children advertising graphics designer Bill has flying model airplanes since five years old getting Control Line 1949 flying things 60 Speed job Olathe Nats has mostly Control Line small amount Free Flight Bill started Team Race 1962 teamed up Jim Dun kin first contest 10th KOI December 1963 took first place Jim 36 single works Mis souri State Highway Department spector started flying late 50s mostly Control Line time did own Indoor hand-launch glider record Jim tells story 75 qualifVing Nats near disaster creamed best plane Rossi contest St Louis two weeks before trials two other planes almost done didnt expect have use moved shut-off refueler valve up make little accessi able doing also moved back behind motor plate Unknown us time put filler tube tank low pressure area caused us run engine much richer order draw against slight vacuum cost us bunch laps some speed main trouble Nats coupled rebuilt engine creamed St Louis piston sleeve wearing out lucked out made team adding some hot stuff fuel some extra speed still short laps accelerated demise engine until shot Nats time spent next two months trying find problem Finally figured out moved valves forward leading edge wing both planes laps came right back though speed down due engine being good least system back normal could concentrate engine prop fuel combination able tell what going address 3533 Tamarisk Lane Missouri City TX 77459 Tellipsoar/Durney continued page 50 vertical fin before attaching boom point should attach horizontal stab fin make sure aligned both planes before securing rear fin post place Also make sure stab linkage good free too much play action Next assemble fin boom reinforce sides recommend attach rudder rudder nyrod Now can set boom assembly aside install weight compartment brass tubes wing wires point ready make final assembly between pod boom Attach stab vertical fin wing pod provides good reference correct alignment Rough up inside boom outside pod epoxy two together checking alignment between wing stab making sure angle between pod boom shown drawing Also make sure pod boom straight line vertical plane Finishing model point rather straightforward presents little problem prefer Monokote wing stab silk dope other covering will work preference trans parent Monokote because excellent visibility provides fact lot easier lungs Almost radio can installed Tellipsoar will accommodate popular bricks servo trays Mount battery far forward possible use styrofoam make sure stays opinion battery should always mounted ahead receiver servos because heaviest part air borne pack could lot damage rest radio event crash Add lead shot nose-weight com 82 Model Aviation RC PYLON RACING DIA PITCHPRICE 5314110 756125 7SN 6N125 81 6%77%150 96%77%150 CONTROL LINE SPEED & RACING DIAPITCHPRICE 4/6%110 4%55%110 6768%120 77%10A11128 88135 89N 9%N135 8%77%140 91212150 NNARROW Langleys Model Aero Engine 1903 Robert Meyer Curator National Air & Space Museum Smithsonian Institution Illustrated orical Collectors Item $500 Cumberland Press 4926 Del Ray Avenue Bethesda Maryland 20014 Name Addrns City ____________________ 7in miowes PRODUCTS CD 400 South Indiana St Hobart Indiana 46342 partment balance model shown plans builder doesnt get carried away paint covering stab fin model will balance two ounces tare weight Hand glide model check trim ready try first launch recommend locate tow hook approximately ahead CG first several launches move back /4 time until approximately 1 behind CG further back can move tow hook sailplane becoming too unstable during tow higher launch can obtain using electric winch keep speed down will use up less line 0-10 knot winds prefer fly air plane additional weight Above 10 knots can add up lb lead weight compartment using 4-oz slug place third tube back front want 8 oz additional weight place lead slugs second fourth holes want 12 oz use back three holes arrangements will maintain CG loca tion very windy conditions slope soaring place fourth weight front tube will shift CG slightly ward better handling Good luck send photographs trophies CL Speed/Bussell continued page 31 made out /2 thick bass over length will approximately 19 long approximate length Harters pan after pan cut match diameter Supertigre 29 spinner engine mounted Lets make wing /t thick hard 6 lb 8 lb C grain balsa can save little weight over bass wing very important big airframe wing will 25 long 6 root 4 tip chord Use /8 X 3 bass maple spar mount control system tie down bolts wing leading edge straight wing taper trailing edge airfoil symmetrical 30% high point Stab stab going measure 39 sq in area should made 3/16 hard balsa root chord 3 tip chord 2 overall length 13 rest design very similar construction techniques speed ship cowl height shape depends engine used personal preference fuselage top should made hard balsa again wing location found 90 sq design pre-assembling component parts airframe moving wing fore aft until C/G located right line outlet Allow about 70 100 nose drop allow paint perma nently attach wing top crutch carving wing always leave flat section bottom wide enough mount wing crutch comes time permanently mount wing top crutch dont have measure wing alignment know wing mounted 00 angle attack very important wing stab mounted 00 angle attack engine thrust line Finish finish big airframe very important care should given bird will overweight After airframe assembled finished sanded bad spots puttied recommend cover balsa parts clear dope tissue coat primer coat epoxy color should give good light finish next column will discuss en gines props fuel limited rework procedures address 4803 Fallon P1 Dallas TX 75227 Safe Flying No Accident August1976 83 crisp lines slice Through sky Matador ready battle stream L wo spars sheeted leading trailing edge pivoted Stabilator lined motor pod locked wing having Please send illustrated carried ends plywood tailbooms hardware wire catalogofmodelsandaccessorles supplied including bushed aluminum 3 bellcrank Enclosed 25t components forthe bladdertype pressure tank 42 wing /RIcE\ __________________ U-Control model 35 cu engines Fast Combat Rich Von Lopez13 ______________________KIT #248