Quick beauty Rubber power class models inexpensive quick build Requiring stock plastic prop puts everyone equal footing model meets conditions fine style providing alternate wing designs calm windy weather ERoss Jahnke THE IMPETUS model came needed quickie replacement Hot Box lost test flying two days before P 30 event 1981 Nationals first Nationals have attended spawned Quick P-30 prototype its progeny also HandLaunched Glider called Roscoe pub lished May 1986 Model Aviation original Quick built Na tionals unsophisticated airplane all-sheet fuselage shorter stabi lizer wing tail moment Its flight char acteristics mediocre although suffi cient place second Senior Four revi sions have spiraled out first impro vised effort modifications devel oped looking other models other events refinements came subsequent experience Wakefield Coupe dHiver much thought novation has gone large Rubber events little has found its way P-30 yet Quick models proportions influenced Wakefield designs Ive incorporated re cent advances airfoil theory Design Free Flight Airfoils Minimum Sink Barnaby Wainfan NFFS Symposium Re port 1984 P-30 models frequently exhibit perform ance characteristics akin Embryo models climb slowly long motors per formance has proven unsatisfactory ideal flying conditions Quick other hand designed per form like larger models Its important note however straightforward sim plicity P-30 models event itself have compromised sake innovation Quick easily simply constructed commonly available traditional materials Construction assumption builder familiar basic stick-andtissue construction Ill limit discussion points believe bear notation Wood selection critical producing light strong model Quick de signed built entirely C-grain balsa 4-to-6-lb range possible ex ceptions nose block material fuselage longerons can heavier 74 Model Aviation P-30 windy weather Quick flat-bottom airfoil authors #4 model right calm weather variant #5 highly undercambered wing left Difference wing structures evident models photographed front authors large paintings Examination picture will show heavy prop shaft loop front winder rubberband secures nose block clear up marking block Left The wing pops up rear dethermalizing providing greater rate descent pop-up tail up can see limit line small swivel clip Clip allows detachment easy transportation also securely holding wing flight Right Wing de thermalizer set flying position Note hook center wing holds main hold-down rubberband DT band desired recommend Sig balsa struction has performed flawlessly 15-20 foil latter leading edge upwho inexperienced insecure select- mph winds beginners backup per camber same thin air ing wood Sig accurately grades its balsa ac- model recommend flat-bottomed air- foil cording density particular airfoil section used models distinguishing feature Its adapted specifically P-30s using de sign parameters outlined Barnaby Wainfan article mentioned earlier Ive corporated such airfoils models Coupe Bostonian Embryo size catego ries seen improved glide performance case crucial features airfoil leading edge LE radius upper camber lower camber Increasing leading edge radius will significantly crease drag wing Sand lead ing edge nearly sharp contour Overlap ping tissue will provide proper ra dius approximately mm upper camber designed provide maximum lift inducing separa tion boundary layer air caus es drag lower camber also helps re tard separation less critical com promise structural integrity obvious defect wing yet sparless conBy winding prop nose block attached motor author says can wind rubber way fuselage put block place unhook winderall never touching rubber motor winding stooge handy thing have too Without car may way get flying field Box made foam core board attaches bike rack hooks #64 rubberbands Authors box can carry two Quick Ones extra rubber motors winding stooge made c wire Addi tional bag carries winder rubber lube glue etcanother has lunch May 1989 75 Ce QUICK ONE P30 SODS tOSS 4RSNC WOO 025 57 JOHN AVA CSDSARG5502 II Li Li i 0 0 Li C LiI 2 ii ii F F] EL ii Li II CA E 0 LiA ~jLi Li Li Li Li Li J Li i I -I Building wing quite simple sure notch leading trailing edges prior construction Doing greatly increases contact area glue joints adding considerable strength cut off wing tips dihedral break carefully sand LE TE fit together form proper dihedral angle Since wing 32 long least 4 dihedral required under tip bring pro jected span down 30 Fuselage judgment good fuselage must satisfy four criteria First must sufficiently durable both structure its componentsnose dethermalizer DT wing mounts etcperform reliably predictably several seasons Sec ond its weight must distributed well eliminate need ballast Third fu selage must have tough motor tube able withstand motor breakage torque Fourth must have trustworthy dether malizer will work 100% time bring model down first official flight P-30 Nats lasted over seven min utes stab DTed fuselage model designed nose heavy allow wing po sitioned farther forward center-ofgravity near center rubber motor cross-grained sheeting motor tube helps shift weight ward its also rigid resistant break age motor should blow type construction standard Wakefields before rolled tubes came use make sheeting cut sheet A2 x 3-in balsa 4-in lengths glue side side After drying carefully cut assembly four strips two 5A6and 1-in widths Make some extra sheeting build pylon nose block critical mechani cal soundness model Too often m sufficient attention paid construction nose block resulting inconsistent flights constant readjustment fore stall problems use harder wood block minimize wear chose /16 music wire prevent bent prop shafts brass wire soldered front bearing keep pushing out block model comes down nose first DTed stout front end war ranted Since winding model often awk ward chore particularly heat com petition used winding loop front shaft also suggest clearly marking keying top nose block en sure its always inserted right-side-up dethermalizer might strike appropriate first its 100% effective bringing model down Having wing dethermalize promotes posi tive reaction model during landing weight mechanism over center-of-gravity rather way out end tail moment make DT positive wing pops forward Continued page 180 76 Model Aviation Full-Size Plans Available. See Page 202 II II AC N Get STICKS. and Fly RIGHT! U VUP C1 WE W f1 kI I[CU l rii -ly a-- t Primary Flight Training Program Videoc Teaches basic flight control safety Demonstrates training procedures flight lessons Explains frequency control field rules Utilizes Ground School Flight training Text Beginners Guide Radio Control Sport 2 Flying Douglas R Pratt Tab Books Inc Includes information Academy Model Aeronautics v STRUCTURE YOUR LEARNING PROCESS FROM PURCHASE TO LANDING - AVOID PREMATURE CRASHES AND UNNECESSARY EXPENSES k LEARN PROPER SAFETY AND CONTROL LEARNING 10 FLY EASY LY INCREASE YOUR CHANCES OF SUCCESS v GREAT FOR CLUB INSTRUC TORS & HOBBY SHOP OWNERS - C ADDS UP TO PP[DJ~ H {O] D1 BETTER NYROD THE ORIGINAL 1&tthQ PUSH ROD COMPLETE WITH ALL REQUIRED METAL FITTINGS IDEALLY SUITED FOR ANY PUSH ROD TIONrjjss ROD\ RUDOERS ELEVATORS AILERONS THROTTLEHARDWARE INCLUDED CONTROL BOATS SEA PLANES. YOUR14 NYRODapterplCE ie IMAGINATION1-8 Rod 2-58 Threaded end 79 34 LONG ASSEMBLED LENGTHCat NYROD SUPR4JN PR00UCT NC 16600 Stat Route 47 E 664721 ONa John doesnt know know last quarter century has very real sense father Old-Timer movement SAM has maintained excellent column Model Builder magazine Old-Timer sub jects called Plug Sparks covers FF RC Control Line matters John has years Engine Month feature column detailed scaled draw ings old engines along paragraph two interesting history personalities volved design production engine Gee say wish col lected published separately dont have have 20-year magazine collection Have got good news John has collected articles Engine Month printed drawings full size now sale two volumes would believe called Vol 1 Vol 2 mere $25 Same address catalogs plans John Pond PO Box 90310 San Jose CA 95109-3310 Also think John still has few Paul Plecans large 24 x 35 drawings famous Free Right models prices $3 folded $5 tube until gone works art will want put workshop wall wife wont let put up bed room wife wont let hang Gas models over bed since McCoy 60 did tend drip oil enjoy hearing address logo head column want re ply please include SASE magazine will pay $5 photos submitted use will get original back send postage SASE purpose Quick One/Jahnke Continued page 76 backward model falls nose first flying surfaces able generate lift would disaster larger heavier model would fall quite fast attitude P-30s lightness prevents rapid descent Though may disconcerting first time works youll soon recognize dether malizers advantages over pop-up stab stabilizer rudder standard construction Keeping lightweight critical balance model may change shape rudder aes thetic reasons desired stabilizer old Poly HLG served origi nal template rudder shown Covering greatly enhances structural tegrity model well qual ity materials Quick should cov ered good-quality lightweight Japanese tissue use Kyosho tissue Old Timer Models manufacturers Indoor supplies sell good Japanese tissue Use favorite method covering model note four suggestions 1 experience nitrate dope best covering adhesive because wont cause warps water-based glues will 2 covering wing cover bottom first Its important adhere tissue rib maintain contour lower cam180 Model Aviation ber Before covering top wing run dope along side ribs juncture bottom covering inside top will ensure tissue well adhered wont pull away shrunk 3 Double cover first open bay tail boom provide strong tran sition between sheeting open structure 4 Lap excess tissue over wire hooks prevent pulling out Finishing After water shrinking cover ing assemble glued-together parts give model three coats nitrate dope has mixed ratio 12 thinner Protect finish frequently handled nose block against wear giving flying Before heading flying field make sure except 46 washout both wing tips model warp free Begin test flying Quick gliding over grass Play tilt inci dence stabilizer achieve long flat glide right Next begin short power flights Aim strong right-hand climb steep possible stalling Downthrust will control stall Use right thrust rudder control turn keep ing mind rudder movement will also affect turn glide As pattern im proves add power make adjustments compensate full power model should climb rap idly make two three circles before prop begins freewheel transition apex power glide should al undetectable practice javelinstyle launch possible using rubber ac cess hole fuselage finger rest After model well trimmed its ad visable continue practice flying famili arize yourself airplane perti nent field procedures flying least night week during summer vacation Im able set up efficiently concentrate finding thermal air go contest arent much interested con tests being prepared will make flying enjoyable know youre going like models outstanding performance envelope Above Quick should fun ques tions comments welcome Send Ross Jahnke W65 N727 St John Ave Cedarburg WI 53012 Mitwaukee/Noonan Continued page 79 school building background todays University WisconsinMilwaukee J shows models equipped ROG gear Numbers wings flying order picture taken practice session team members chosen snapped Clarence Bates model can seen ground lower left long-ago members recalled trip Chicago Instead train Lynn chose lake steamer side paddle wheels ing totally inexperienced lake travel chose cabin next paddle wheel hous ing resulting noisy sleepless night concerned Upon arrival Chicago club members guests IMAC special meeting honoring guests theater party given IMAC sponsors Next day enjoyed sightseeing tour Chicago followed contest Sunday August 15 1915 Results mixed Milwaukee won best average duration 72 sec Chicagos 711 182 Model Aviation three additional coats Finally dump some unthinned dope down motor tube protect rubber lube ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE VINTAQE -C ILAN C ON S OLIDATE D PBY-5A CATALINA 9 FT WING SPAN Al RIBS S EULL FORMERN SHOWN ON PLANS1 PLAsTIC ENGCOWLS $1090 PR CLEAR GJN BLISTERS $ 760 PR 4 LARGE PLAN SHEETS s 6FT WING SPAN MODEL PBY-SA ENGINE COWLS $ZSO PR Plans $1495 GUN BLISTERS $ 550 PR ADO $ SOO POSTAGE CATALOGOVER 50 PLANS tiOO DEALERS WRITE W5t @WE SID MORGAN 13157 ORMOND 8ELLEVILLEMICH 48111 USA
Edition: Model Aviation - 1989/05
Page Numbers: 74, 75, 76, 180, 182
Quick beauty Rubber power class models inexpensive quick build Requiring stock plastic prop puts everyone equal footing model meets conditions fine style providing alternate wing designs calm windy weather ERoss Jahnke THE IMPETUS model came needed quickie replacement Hot Box lost test flying two days before P 30 event 1981 Nationals first Nationals have attended spawned Quick P-30 prototype its progeny also HandLaunched Glider called Roscoe pub lished May 1986 Model Aviation original Quick built Na tionals unsophisticated airplane all-sheet fuselage shorter stabi lizer wing tail moment Its flight char acteristics mediocre although suffi cient place second Senior Four revi sions have spiraled out first impro vised effort modifications devel oped looking other models other events refinements came subsequent experience Wakefield Coupe dHiver much thought novation has gone large Rubber events little has found its way P-30 yet Quick models proportions influenced Wakefield designs Ive incorporated re cent advances airfoil theory Design Free Flight Airfoils Minimum Sink Barnaby Wainfan NFFS Symposium Re port 1984 P-30 models frequently exhibit perform ance characteristics akin Embryo models climb slowly long motors per formance has proven unsatisfactory ideal flying conditions Quick other hand designed per form like larger models Its important note however straightforward sim plicity P-30 models event itself have compromised sake innovation Quick easily simply constructed commonly available traditional materials Construction assumption builder familiar basic stick-andtissue construction Ill limit discussion points believe bear notation Wood selection critical producing light strong model Quick de signed built entirely C-grain balsa 4-to-6-lb range possible ex ceptions nose block material fuselage longerons can heavier 74 Model Aviation P-30 windy weather Quick flat-bottom airfoil authors #4 model right calm weather variant #5 highly undercambered wing left Difference wing structures evident models photographed front authors large paintings Examination picture will show heavy prop shaft loop front winder rubberband secures nose block clear up marking block Left The wing pops up rear dethermalizing providing greater rate descent pop-up tail up can see limit line small swivel clip Clip allows detachment easy transportation also securely holding wing flight Right Wing de thermalizer set flying position Note hook center wing holds main hold-down rubberband DT band desired recommend Sig balsa struction has performed flawlessly 15-20 foil latter leading edge upwho inexperienced insecure select- mph winds beginners backup per camber same thin air ing wood Sig accurately grades its balsa ac- model recommend flat-bottomed air- foil cording density particular airfoil section used models distinguishing feature Its adapted specifically P-30s using de sign parameters outlined Barnaby Wainfan article mentioned earlier Ive corporated such airfoils models Coupe Bostonian Embryo size catego ries seen improved glide performance case crucial features airfoil leading edge LE radius upper camber lower camber Increasing leading edge radius will significantly crease drag wing Sand lead ing edge nearly sharp contour Overlap ping tissue will provide proper ra dius approximately mm upper camber designed provide maximum lift inducing separa tion boundary layer air caus es drag lower camber also helps re tard separation less critical com promise structural integrity obvious defect wing yet sparless conBy winding prop nose block attached motor author says can wind rubber way fuselage put block place unhook winderall never touching rubber motor winding stooge handy thing have too Without car may way get flying field Box made foam core board attaches bike rack hooks #64 rubberbands Authors box can carry two Quick Ones extra rubber motors winding stooge made c wire Addi tional bag carries winder rubber lube glue etcanother has lunch May 1989 75 Ce QUICK ONE P30 SODS tOSS 4RSNC WOO 025 57 JOHN AVA CSDSARG5502 II Li Li i 0 0 Li C LiI 2 ii ii F F] EL ii Li II CA E 0 LiA ~jLi Li Li Li Li Li J Li i I -I Building wing quite simple sure notch leading trailing edges prior construction Doing greatly increases contact area glue joints adding considerable strength cut off wing tips dihedral break carefully sand LE TE fit together form proper dihedral angle Since wing 32 long least 4 dihedral required under tip bring pro jected span down 30 Fuselage judgment good fuselage must satisfy four criteria First must sufficiently durable both structure its componentsnose dethermalizer DT wing mounts etcperform reliably predictably several seasons Sec ond its weight must distributed well eliminate need ballast Third fu selage must have tough motor tube able withstand motor breakage torque Fourth must have trustworthy dether malizer will work 100% time bring model down first official flight P-30 Nats lasted over seven min utes stab DTed fuselage model designed nose heavy allow wing po sitioned farther forward center-ofgravity near center rubber motor cross-grained sheeting motor tube helps shift weight ward its also rigid resistant break age motor should blow type construction standard Wakefields before rolled tubes came use make sheeting cut sheet A2 x 3-in balsa 4-in lengths glue side side After drying carefully cut assembly four strips two 5A6and 1-in widths Make some extra sheeting build pylon nose block critical mechani cal soundness model Too often m sufficient attention paid construction nose block resulting inconsistent flights constant readjustment fore stall problems use harder wood block minimize wear chose /16 music wire prevent bent prop shafts brass wire soldered front bearing keep pushing out block model comes down nose first DTed stout front end war ranted Since winding model often awk ward chore particularly heat com petition used winding loop front shaft also suggest clearly marking keying top nose block en sure its always inserted right-side-up dethermalizer might strike appropriate first its 100% effective bringing model down Having wing dethermalize promotes posi tive reaction model during landing weight mechanism over center-of-gravity rather way out end tail moment make DT positive wing pops forward Continued page 180 76 Model Aviation Full-Size Plans Available. See Page 202 II II AC N Get STICKS. and Fly RIGHT! U VUP C1 WE W f1 kI I[CU l rii -ly a-- t Primary Flight Training Program Videoc Teaches basic flight control safety Demonstrates training procedures flight lessons Explains frequency control field rules Utilizes Ground School Flight training Text Beginners Guide Radio Control Sport 2 Flying Douglas R Pratt Tab Books Inc Includes information Academy Model Aeronautics v STRUCTURE YOUR LEARNING PROCESS FROM PURCHASE TO LANDING - AVOID PREMATURE CRASHES AND UNNECESSARY EXPENSES k LEARN PROPER SAFETY AND CONTROL LEARNING 10 FLY EASY LY INCREASE YOUR CHANCES OF SUCCESS v GREAT FOR CLUB INSTRUC TORS & HOBBY SHOP OWNERS - C ADDS UP TO PP[DJ~ H {O] D1 BETTER NYROD THE ORIGINAL 1&tthQ PUSH ROD COMPLETE WITH ALL REQUIRED METAL FITTINGS IDEALLY SUITED FOR ANY PUSH ROD TIONrjjss ROD\ RUDOERS ELEVATORS AILERONS THROTTLEHARDWARE INCLUDED CONTROL BOATS SEA PLANES. YOUR14 NYRODapterplCE ie IMAGINATION1-8 Rod 2-58 Threaded end 79 34 LONG ASSEMBLED LENGTHCat NYROD SUPR4JN PR00UCT NC 16600 Stat Route 47 E 664721 ONa John doesnt know know last quarter century has very real sense father Old-Timer movement SAM has maintained excellent column Model Builder magazine Old-Timer sub jects called Plug Sparks covers FF RC Control Line matters John has years Engine Month feature column detailed scaled draw ings old engines along paragraph two interesting history personalities volved design production engine Gee say wish col lected published separately dont have have 20-year magazine collection Have got good news John has collected articles Engine Month printed drawings full size now sale two volumes would believe called Vol 1 Vol 2 mere $25 Same address catalogs plans John Pond PO Box 90310 San Jose CA 95109-3310 Also think John still has few Paul Plecans large 24 x 35 drawings famous Free Right models prices $3 folded $5 tube until gone works art will want put workshop wall wife wont let put up bed room wife wont let hang Gas models over bed since McCoy 60 did tend drip oil enjoy hearing address logo head column want re ply please include SASE magazine will pay $5 photos submitted use will get original back send postage SASE purpose Quick One/Jahnke Continued page 76 backward model falls nose first flying surfaces able generate lift would disaster larger heavier model would fall quite fast attitude P-30s lightness prevents rapid descent Though may disconcerting first time works youll soon recognize dether malizers advantages over pop-up stab stabilizer rudder standard construction Keeping lightweight critical balance model may change shape rudder aes thetic reasons desired stabilizer old Poly HLG served origi nal template rudder shown Covering greatly enhances structural tegrity model well qual ity materials Quick should cov ered good-quality lightweight Japanese tissue use Kyosho tissue Old Timer Models manufacturers Indoor supplies sell good Japanese tissue Use favorite method covering model note four suggestions 1 experience nitrate dope best covering adhesive because wont cause warps water-based glues will 2 covering wing cover bottom first Its important adhere tissue rib maintain contour lower cam180 Model Aviation ber Before covering top wing run dope along side ribs juncture bottom covering inside top will ensure tissue well adhered wont pull away shrunk 3 Double cover first open bay tail boom provide strong tran sition between sheeting open structure 4 Lap excess tissue over wire hooks prevent pulling out Finishing After water shrinking cover ing assemble glued-together parts give model three coats nitrate dope has mixed ratio 12 thinner Protect finish frequently handled nose block against wear giving flying Before heading flying field make sure except 46 washout both wing tips model warp free Begin test flying Quick gliding over grass Play tilt inci dence stabilizer achieve long flat glide right Next begin short power flights Aim strong right-hand climb steep possible stalling Downthrust will control stall Use right thrust rudder control turn keep ing mind rudder movement will also affect turn glide As pattern im proves add power make adjustments compensate full power model should climb rap idly make two three circles before prop begins freewheel transition apex power glide should al undetectable practice javelinstyle launch possible using rubber ac cess hole fuselage finger rest After model well trimmed its ad visable continue practice flying famili arize yourself airplane perti nent field procedures flying least night week during summer vacation Im able set up efficiently concentrate finding thermal air go contest arent much interested con tests being prepared will make flying enjoyable know youre going like models outstanding performance envelope Above Quick should fun ques tions comments welcome Send Ross Jahnke W65 N727 St John Ave Cedarburg WI 53012 Mitwaukee/Noonan Continued page 79 school building background todays University WisconsinMilwaukee J shows models equipped ROG gear Numbers wings flying order picture taken practice session team members chosen snapped Clarence Bates model can seen ground lower left long-ago members recalled trip Chicago Instead train Lynn chose lake steamer side paddle wheels ing totally inexperienced lake travel chose cabin next paddle wheel hous ing resulting noisy sleepless night concerned Upon arrival Chicago club members guests IMAC special meeting honoring guests theater party given IMAC sponsors Next day enjoyed sightseeing tour Chicago followed contest Sunday August 15 1915 Results mixed Milwaukee won best average duration 72 sec Chicagos 711 182 Model Aviation three additional coats Finally dump some unthinned dope down motor tube protect rubber lube ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE VINTAQE -C ILAN C ON S OLIDATE D PBY-5A CATALINA 9 FT WING SPAN Al RIBS S EULL FORMERN SHOWN ON PLANS1 PLAsTIC ENGCOWLS $1090 PR CLEAR GJN BLISTERS $ 760 PR 4 LARGE PLAN SHEETS s 6FT WING SPAN MODEL PBY-SA ENGINE COWLS $ZSO PR Plans $1495 GUN BLISTERS $ 550 PR ADO $ SOO POSTAGE CATALOGOVER 50 PLANS tiOO DEALERS WRITE W5t @WE SID MORGAN 13157 ORMOND 8ELLEVILLEMICH 48111 USA
Edition: Model Aviation - 1989/05
Page Numbers: 74, 75, 76, 180, 182
Quick beauty Rubber power class models inexpensive quick build Requiring stock plastic prop puts everyone equal footing model meets conditions fine style providing alternate wing designs calm windy weather ERoss Jahnke THE IMPETUS model came needed quickie replacement Hot Box lost test flying two days before P 30 event 1981 Nationals first Nationals have attended spawned Quick P-30 prototype its progeny also HandLaunched Glider called Roscoe pub lished May 1986 Model Aviation original Quick built Na tionals unsophisticated airplane all-sheet fuselage shorter stabi lizer wing tail moment Its flight char acteristics mediocre although suffi cient place second Senior Four revi sions have spiraled out first impro vised effort modifications devel oped looking other models other events refinements came subsequent experience Wakefield Coupe dHiver much thought novation has gone large Rubber events little has found its way P-30 yet Quick models proportions influenced Wakefield designs Ive incorporated re cent advances airfoil theory Design Free Flight Airfoils Minimum Sink Barnaby Wainfan NFFS Symposium Re port 1984 P-30 models frequently exhibit perform ance characteristics akin Embryo models climb slowly long motors per formance has proven unsatisfactory ideal flying conditions Quick other hand designed per form like larger models Its important note however straightforward sim plicity P-30 models event itself have compromised sake innovation Quick easily simply constructed commonly available traditional materials Construction assumption builder familiar basic stick-andtissue construction Ill limit discussion points believe bear notation Wood selection critical producing light strong model Quick de signed built entirely C-grain balsa 4-to-6-lb range possible ex ceptions nose block material fuselage longerons can heavier 74 Model Aviation P-30 windy weather Quick flat-bottom airfoil authors #4 model right calm weather variant #5 highly undercambered wing left Difference wing structures evident models photographed front authors large paintings Examination picture will show heavy prop shaft loop front winder rubberband secures nose block clear up marking block Left The wing pops up rear dethermalizing providing greater rate descent pop-up tail up can see limit line small swivel clip Clip allows detachment easy transportation also securely holding wing flight Right Wing de thermalizer set flying position Note hook center wing holds main hold-down rubberband DT band desired recommend Sig balsa struction has performed flawlessly 15-20 foil latter leading edge upwho inexperienced insecure select- mph winds beginners backup per camber same thin air ing wood Sig accurately grades its balsa ac- model recommend flat-bottomed air- foil cording density particular airfoil section used models distinguishing feature Its adapted specifically P-30s using de sign parameters outlined Barnaby Wainfan article mentioned earlier Ive corporated such airfoils models Coupe Bostonian Embryo size catego ries seen improved glide performance case crucial features airfoil leading edge LE radius upper camber lower camber Increasing leading edge radius will significantly crease drag wing Sand lead ing edge nearly sharp contour Overlap ping tissue will provide proper ra dius approximately mm upper camber designed provide maximum lift inducing separa tion boundary layer air caus es drag lower camber also helps re tard separation less critical com promise structural integrity obvious defect wing yet sparless conBy winding prop nose block attached motor author says can wind rubber way fuselage put block place unhook winderall never touching rubber motor winding stooge handy thing have too Without car may way get flying field Box made foam core board attaches bike rack hooks #64 rubberbands Authors box can carry two Quick Ones extra rubber motors winding stooge made c wire Addi tional bag carries winder rubber lube glue etcanother has lunch May 1989 75 Ce QUICK ONE P30 SODS tOSS 4RSNC WOO 025 57 JOHN AVA CSDSARG5502 II Li Li i 0 0 Li C LiI 2 ii ii F F] EL ii Li II CA E 0 LiA ~jLi Li Li Li Li Li J Li i I -I Building wing quite simple sure notch leading trailing edges prior construction Doing greatly increases contact area glue joints adding considerable strength cut off wing tips dihedral break carefully sand LE TE fit together form proper dihedral angle Since wing 32 long least 4 dihedral required under tip bring pro jected span down 30 Fuselage judgment good fuselage must satisfy four criteria First must sufficiently durable both structure its componentsnose dethermalizer DT wing mounts etcperform reliably predictably several seasons Sec ond its weight must distributed well eliminate need ballast Third fu selage must have tough motor tube able withstand motor breakage torque Fourth must have trustworthy dether malizer will work 100% time bring model down first official flight P-30 Nats lasted over seven min utes stab DTed fuselage model designed nose heavy allow wing po sitioned farther forward center-ofgravity near center rubber motor cross-grained sheeting motor tube helps shift weight ward its also rigid resistant break age motor should blow type construction standard Wakefields before rolled tubes came use make sheeting cut sheet A2 x 3-in balsa 4-in lengths glue side side After drying carefully cut assembly four strips two 5A6and 1-in widths Make some extra sheeting build pylon nose block critical mechani cal soundness model Too often m sufficient attention paid construction nose block resulting inconsistent flights constant readjustment fore stall problems use harder wood block minimize wear chose /16 music wire prevent bent prop shafts brass wire soldered front bearing keep pushing out block model comes down nose first DTed stout front end war ranted Since winding model often awk ward chore particularly heat com petition used winding loop front shaft also suggest clearly marking keying top nose block en sure its always inserted right-side-up dethermalizer might strike appropriate first its 100% effective bringing model down Having wing dethermalize promotes posi tive reaction model during landing weight mechanism over center-of-gravity rather way out end tail moment make DT positive wing pops forward Continued page 180 76 Model Aviation Full-Size Plans Available. See Page 202 II II AC N Get STICKS. and Fly RIGHT! U VUP C1 WE W f1 kI I[CU l rii -ly a-- t Primary Flight Training Program Videoc Teaches basic flight control safety Demonstrates training procedures flight lessons Explains frequency control field rules Utilizes Ground School Flight training Text Beginners Guide Radio Control Sport 2 Flying Douglas R Pratt Tab Books Inc Includes information Academy Model Aeronautics v STRUCTURE YOUR LEARNING PROCESS FROM PURCHASE TO LANDING - AVOID PREMATURE CRASHES AND UNNECESSARY EXPENSES k LEARN PROPER SAFETY AND CONTROL LEARNING 10 FLY EASY LY INCREASE YOUR CHANCES OF SUCCESS v GREAT FOR CLUB INSTRUC TORS & HOBBY SHOP OWNERS - C ADDS UP TO PP[DJ~ H {O] D1 BETTER NYROD THE ORIGINAL 1&tthQ PUSH ROD COMPLETE WITH ALL REQUIRED METAL FITTINGS IDEALLY SUITED FOR ANY PUSH ROD TIONrjjss ROD\ RUDOERS ELEVATORS AILERONS THROTTLEHARDWARE INCLUDED CONTROL BOATS SEA PLANES. YOUR14 NYRODapterplCE ie IMAGINATION1-8 Rod 2-58 Threaded end 79 34 LONG ASSEMBLED LENGTHCat NYROD SUPR4JN PR00UCT NC 16600 Stat Route 47 E 664721 ONa John doesnt know know last quarter century has very real sense father Old-Timer movement SAM has maintained excellent column Model Builder magazine Old-Timer sub jects called Plug Sparks covers FF RC Control Line matters John has years Engine Month feature column detailed scaled draw ings old engines along paragraph two interesting history personalities volved design production engine Gee say wish col lected published separately dont have have 20-year magazine collection Have got good news John has collected articles Engine Month printed drawings full size now sale two volumes would believe called Vol 1 Vol 2 mere $25 Same address catalogs plans John Pond PO Box 90310 San Jose CA 95109-3310 Also think John still has few Paul Plecans large 24 x 35 drawings famous Free Right models prices $3 folded $5 tube until gone works art will want put workshop wall wife wont let put up bed room wife wont let hang Gas models over bed since McCoy 60 did tend drip oil enjoy hearing address logo head column want re ply please include SASE magazine will pay $5 photos submitted use will get original back send postage SASE purpose Quick One/Jahnke Continued page 76 backward model falls nose first flying surfaces able generate lift would disaster larger heavier model would fall quite fast attitude P-30s lightness prevents rapid descent Though may disconcerting first time works youll soon recognize dether malizers advantages over pop-up stab stabilizer rudder standard construction Keeping lightweight critical balance model may change shape rudder aes thetic reasons desired stabilizer old Poly HLG served origi nal template rudder shown Covering greatly enhances structural tegrity model well qual ity materials Quick should cov ered good-quality lightweight Japanese tissue use Kyosho tissue Old Timer Models manufacturers Indoor supplies sell good Japanese tissue Use favorite method covering model note four suggestions 1 experience nitrate dope best covering adhesive because wont cause warps water-based glues will 2 covering wing cover bottom first Its important adhere tissue rib maintain contour lower cam180 Model Aviation ber Before covering top wing run dope along side ribs juncture bottom covering inside top will ensure tissue well adhered wont pull away shrunk 3 Double cover first open bay tail boom provide strong tran sition between sheeting open structure 4 Lap excess tissue over wire hooks prevent pulling out Finishing After water shrinking cover ing assemble glued-together parts give model three coats nitrate dope has mixed ratio 12 thinner Protect finish frequently handled nose block against wear giving flying Before heading flying field make sure except 46 washout both wing tips model warp free Begin test flying Quick gliding over grass Play tilt inci dence stabilizer achieve long flat glide right Next begin short power flights Aim strong right-hand climb steep possible stalling Downthrust will control stall Use right thrust rudder control turn keep ing mind rudder movement will also affect turn glide As pattern im proves add power make adjustments compensate full power model should climb rap idly make two three circles before prop begins freewheel transition apex power glide should al undetectable practice javelinstyle launch possible using rubber ac cess hole fuselage finger rest After model well trimmed its ad visable continue practice flying famili arize yourself airplane perti nent field procedures flying least night week during summer vacation Im able set up efficiently concentrate finding thermal air go contest arent much interested con tests being prepared will make flying enjoyable know youre going like models outstanding performance envelope Above Quick should fun ques tions comments welcome Send Ross Jahnke W65 N727 St John Ave Cedarburg WI 53012 Mitwaukee/Noonan Continued page 79 school building background todays University WisconsinMilwaukee J shows models equipped ROG gear Numbers wings flying order picture taken practice session team members chosen snapped Clarence Bates model can seen ground lower left long-ago members recalled trip Chicago Instead train Lynn chose lake steamer side paddle wheels ing totally inexperienced lake travel chose cabin next paddle wheel hous ing resulting noisy sleepless night concerned Upon arrival Chicago club members guests IMAC special meeting honoring guests theater party given IMAC sponsors Next day enjoyed sightseeing tour Chicago followed contest Sunday August 15 1915 Results mixed Milwaukee won best average duration 72 sec Chicagos 711 182 Model Aviation three additional coats Finally dump some unthinned dope down motor tube protect rubber lube ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE VINTAQE -C ILAN C ON S OLIDATE D PBY-5A CATALINA 9 FT WING SPAN Al RIBS S EULL FORMERN SHOWN ON PLANS1 PLAsTIC ENGCOWLS $1090 PR CLEAR GJN BLISTERS $ 760 PR 4 LARGE PLAN SHEETS s 6FT WING SPAN MODEL PBY-SA ENGINE COWLS $ZSO PR Plans $1495 GUN BLISTERS $ 550 PR ADO $ SOO POSTAGE CATALOGOVER 50 PLANS tiOO DEALERS WRITE W5t @WE SID MORGAN 13157 ORMOND 8ELLEVILLEMICH 48111 USA
Edition: Model Aviation - 1989/05
Page Numbers: 74, 75, 76, 180, 182
Quick beauty Rubber power class models inexpensive quick build Requiring stock plastic prop puts everyone equal footing model meets conditions fine style providing alternate wing designs calm windy weather ERoss Jahnke THE IMPETUS model came needed quickie replacement Hot Box lost test flying two days before P 30 event 1981 Nationals first Nationals have attended spawned Quick P-30 prototype its progeny also HandLaunched Glider called Roscoe pub lished May 1986 Model Aviation original Quick built Na tionals unsophisticated airplane all-sheet fuselage shorter stabi lizer wing tail moment Its flight char acteristics mediocre although suffi cient place second Senior Four revi sions have spiraled out first impro vised effort modifications devel oped looking other models other events refinements came subsequent experience Wakefield Coupe dHiver much thought novation has gone large Rubber events little has found its way P-30 yet Quick models proportions influenced Wakefield designs Ive incorporated re cent advances airfoil theory Design Free Flight Airfoils Minimum Sink Barnaby Wainfan NFFS Symposium Re port 1984 P-30 models frequently exhibit perform ance characteristics akin Embryo models climb slowly long motors per formance has proven unsatisfactory ideal flying conditions Quick other hand designed per form like larger models Its important note however straightforward sim plicity P-30 models event itself have compromised sake innovation Quick easily simply constructed commonly available traditional materials Construction assumption builder familiar basic stick-andtissue construction Ill limit discussion points believe bear notation Wood selection critical producing light strong model Quick de signed built entirely C-grain balsa 4-to-6-lb range possible ex ceptions nose block material fuselage longerons can heavier 74 Model Aviation P-30 windy weather Quick flat-bottom airfoil authors #4 model right calm weather variant #5 highly undercambered wing left Difference wing structures evident models photographed front authors large paintings Examination picture will show heavy prop shaft loop front winder rubberband secures nose block clear up marking block Left The wing pops up rear dethermalizing providing greater rate descent pop-up tail up can see limit line small swivel clip Clip allows detachment easy transportation also securely holding wing flight Right Wing de thermalizer set flying position Note hook center wing holds main hold-down rubberband DT band desired recommend Sig balsa struction has performed flawlessly 15-20 foil latter leading edge upwho inexperienced insecure select- mph winds beginners backup per camber same thin air ing wood Sig accurately grades its balsa ac- model recommend flat-bottomed air- foil cording density particular airfoil section used models distinguishing feature Its adapted specifically P-30s using de sign parameters outlined Barnaby Wainfan article mentioned earlier Ive corporated such airfoils models Coupe Bostonian Embryo size catego ries seen improved glide performance case crucial features airfoil leading edge LE radius upper camber lower camber Increasing leading edge radius will significantly crease drag wing Sand lead ing edge nearly sharp contour Overlap ping tissue will provide proper ra dius approximately mm upper camber designed provide maximum lift inducing separa tion boundary layer air caus es drag lower camber also helps re tard separation less critical com promise structural integrity obvious defect wing yet sparless conBy winding prop nose block attached motor author says can wind rubber way fuselage put block place unhook winderall never touching rubber motor winding stooge handy thing have too Without car may way get flying field Box made foam core board attaches bike rack hooks #64 rubberbands Authors box can carry two Quick Ones extra rubber motors winding stooge made c wire Addi tional bag carries winder rubber lube glue etcanother has lunch May 1989 75 Ce QUICK ONE P30 SODS tOSS 4RSNC WOO 025 57 JOHN AVA CSDSARG5502 II Li Li i 0 0 Li C LiI 2 ii ii F F] EL ii Li II CA E 0 LiA ~jLi Li Li Li Li Li J Li i I -I Building wing quite simple sure notch leading trailing edges prior construction Doing greatly increases contact area glue joints adding considerable strength cut off wing tips dihedral break carefully sand LE TE fit together form proper dihedral angle Since wing 32 long least 4 dihedral required under tip bring pro jected span down 30 Fuselage judgment good fuselage must satisfy four criteria First must sufficiently durable both structure its componentsnose dethermalizer DT wing mounts etcperform reliably predictably several seasons Sec ond its weight must distributed well eliminate need ballast Third fu selage must have tough motor tube able withstand motor breakage torque Fourth must have trustworthy dether malizer will work 100% time bring model down first official flight P-30 Nats lasted over seven min utes stab DTed fuselage model designed nose heavy allow wing po sitioned farther forward center-ofgravity near center rubber motor cross-grained sheeting motor tube helps shift weight ward its also rigid resistant break age motor should blow type construction standard Wakefields before rolled tubes came use make sheeting cut sheet A2 x 3-in balsa 4-in lengths glue side side After drying carefully cut assembly four strips two 5A6and 1-in widths Make some extra sheeting build pylon nose block critical mechani cal soundness model Too often m sufficient attention paid construction nose block resulting inconsistent flights constant readjustment fore stall problems use harder wood block minimize wear chose /16 music wire prevent bent prop shafts brass wire soldered front bearing keep pushing out block model comes down nose first DTed stout front end war ranted Since winding model often awk ward chore particularly heat com petition used winding loop front shaft also suggest clearly marking keying top nose block en sure its always inserted right-side-up dethermalizer might strike appropriate first its 100% effective bringing model down Having wing dethermalize promotes posi tive reaction model during landing weight mechanism over center-of-gravity rather way out end tail moment make DT positive wing pops forward Continued page 180 76 Model Aviation Full-Size Plans Available. See Page 202 II II AC N Get STICKS. and Fly RIGHT! U VUP C1 WE W f1 kI I[CU l rii -ly a-- t Primary Flight Training Program Videoc Teaches basic flight control safety Demonstrates training procedures flight lessons Explains frequency control field rules Utilizes Ground School Flight training Text Beginners Guide Radio Control Sport 2 Flying Douglas R Pratt Tab Books Inc Includes information Academy Model Aeronautics v STRUCTURE YOUR LEARNING PROCESS FROM PURCHASE TO LANDING - AVOID PREMATURE CRASHES AND UNNECESSARY EXPENSES k LEARN PROPER SAFETY AND CONTROL LEARNING 10 FLY EASY LY INCREASE YOUR CHANCES OF SUCCESS v GREAT FOR CLUB INSTRUC TORS & HOBBY SHOP OWNERS - C ADDS UP TO PP[DJ~ H {O] D1 BETTER NYROD THE ORIGINAL 1&tthQ PUSH ROD COMPLETE WITH ALL REQUIRED METAL FITTINGS IDEALLY SUITED FOR ANY PUSH ROD TIONrjjss ROD\ RUDOERS ELEVATORS AILERONS THROTTLEHARDWARE INCLUDED CONTROL BOATS SEA PLANES. YOUR14 NYRODapterplCE ie IMAGINATION1-8 Rod 2-58 Threaded end 79 34 LONG ASSEMBLED LENGTHCat NYROD SUPR4JN PR00UCT NC 16600 Stat Route 47 E 664721 ONa John doesnt know know last quarter century has very real sense father Old-Timer movement SAM has maintained excellent column Model Builder magazine Old-Timer sub jects called Plug Sparks covers FF RC Control Line matters John has years Engine Month feature column detailed scaled draw ings old engines along paragraph two interesting history personalities volved design production engine Gee say wish col lected published separately dont have have 20-year magazine collection Have got good news John has collected articles Engine Month printed drawings full size now sale two volumes would believe called Vol 1 Vol 2 mere $25 Same address catalogs plans John Pond PO Box 90310 San Jose CA 95109-3310 Also think John still has few Paul Plecans large 24 x 35 drawings famous Free Right models prices $3 folded $5 tube until gone works art will want put workshop wall wife wont let put up bed room wife wont let hang Gas models over bed since McCoy 60 did tend drip oil enjoy hearing address logo head column want re ply please include SASE magazine will pay $5 photos submitted use will get original back send postage SASE purpose Quick One/Jahnke Continued page 76 backward model falls nose first flying surfaces able generate lift would disaster larger heavier model would fall quite fast attitude P-30s lightness prevents rapid descent Though may disconcerting first time works youll soon recognize dether malizers advantages over pop-up stab stabilizer rudder standard construction Keeping lightweight critical balance model may change shape rudder aes thetic reasons desired stabilizer old Poly HLG served origi nal template rudder shown Covering greatly enhances structural tegrity model well qual ity materials Quick should cov ered good-quality lightweight Japanese tissue use Kyosho tissue Old Timer Models manufacturers Indoor supplies sell good Japanese tissue Use favorite method covering model note four suggestions 1 experience nitrate dope best covering adhesive because wont cause warps water-based glues will 2 covering wing cover bottom first Its important adhere tissue rib maintain contour lower cam180 Model Aviation ber Before covering top wing run dope along side ribs juncture bottom covering inside top will ensure tissue well adhered wont pull away shrunk 3 Double cover first open bay tail boom provide strong tran sition between sheeting open structure 4 Lap excess tissue over wire hooks prevent pulling out Finishing After water shrinking cover ing assemble glued-together parts give model three coats nitrate dope has mixed ratio 12 thinner Protect finish frequently handled nose block against wear giving flying Before heading flying field make sure except 46 washout both wing tips model warp free Begin test flying Quick gliding over grass Play tilt inci dence stabilizer achieve long flat glide right Next begin short power flights Aim strong right-hand climb steep possible stalling Downthrust will control stall Use right thrust rudder control turn keep ing mind rudder movement will also affect turn glide As pattern im proves add power make adjustments compensate full power model should climb rap idly make two three circles before prop begins freewheel transition apex power glide should al undetectable practice javelinstyle launch possible using rubber ac cess hole fuselage finger rest After model well trimmed its ad visable continue practice flying famili arize yourself airplane perti nent field procedures flying least night week during summer vacation Im able set up efficiently concentrate finding thermal air go contest arent much interested con tests being prepared will make flying enjoyable know youre going like models outstanding performance envelope Above Quick should fun ques tions comments welcome Send Ross Jahnke W65 N727 St John Ave Cedarburg WI 53012 Mitwaukee/Noonan Continued page 79 school building background todays University WisconsinMilwaukee J shows models equipped ROG gear Numbers wings flying order picture taken practice session team members chosen snapped Clarence Bates model can seen ground lower left long-ago members recalled trip Chicago Instead train Lynn chose lake steamer side paddle wheels ing totally inexperienced lake travel chose cabin next paddle wheel hous ing resulting noisy sleepless night concerned Upon arrival Chicago club members guests IMAC special meeting honoring guests theater party given IMAC sponsors Next day enjoyed sightseeing tour Chicago followed contest Sunday August 15 1915 Results mixed Milwaukee won best average duration 72 sec Chicagos 711 182 Model Aviation three additional coats Finally dump some unthinned dope down motor tube protect rubber lube ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE VINTAQE -C ILAN C ON S OLIDATE D PBY-5A CATALINA 9 FT WING SPAN Al RIBS S EULL FORMERN SHOWN ON PLANS1 PLAsTIC ENGCOWLS $1090 PR CLEAR GJN BLISTERS $ 760 PR 4 LARGE PLAN SHEETS s 6FT WING SPAN MODEL PBY-SA ENGINE COWLS $ZSO PR Plans $1495 GUN BLISTERS $ 550 PR ADO $ SOO POSTAGE CATALOGOVER 50 PLANS tiOO DEALERS WRITE W5t @WE SID MORGAN 13157 ORMOND 8ELLEVILLEMICH 48111 USA
Edition: Model Aviation - 1989/05
Page Numbers: 74, 75, 76, 180, 182
Quick beauty Rubber power class models inexpensive quick build Requiring stock plastic prop puts everyone equal footing model meets conditions fine style providing alternate wing designs calm windy weather ERoss Jahnke THE IMPETUS model came needed quickie replacement Hot Box lost test flying two days before P 30 event 1981 Nationals first Nationals have attended spawned Quick P-30 prototype its progeny also HandLaunched Glider called Roscoe pub lished May 1986 Model Aviation original Quick built Na tionals unsophisticated airplane all-sheet fuselage shorter stabi lizer wing tail moment Its flight char acteristics mediocre although suffi cient place second Senior Four revi sions have spiraled out first impro vised effort modifications devel oped looking other models other events refinements came subsequent experience Wakefield Coupe dHiver much thought novation has gone large Rubber events little has found its way P-30 yet Quick models proportions influenced Wakefield designs Ive incorporated re cent advances airfoil theory Design Free Flight Airfoils Minimum Sink Barnaby Wainfan NFFS Symposium Re port 1984 P-30 models frequently exhibit perform ance characteristics akin Embryo models climb slowly long motors per formance has proven unsatisfactory ideal flying conditions Quick other hand designed per form like larger models Its important note however straightforward sim plicity P-30 models event itself have compromised sake innovation Quick easily simply constructed commonly available traditional materials Construction assumption builder familiar basic stick-andtissue construction Ill limit discussion points believe bear notation Wood selection critical producing light strong model Quick de signed built entirely C-grain balsa 4-to-6-lb range possible ex ceptions nose block material fuselage longerons can heavier 74 Model Aviation P-30 windy weather Quick flat-bottom airfoil authors #4 model right calm weather variant #5 highly undercambered wing left Difference wing structures evident models photographed front authors large paintings Examination picture will show heavy prop shaft loop front winder rubberband secures nose block clear up marking block Left The wing pops up rear dethermalizing providing greater rate descent pop-up tail up can see limit line small swivel clip Clip allows detachment easy transportation also securely holding wing flight Right Wing de thermalizer set flying position Note hook center wing holds main hold-down rubberband DT band desired recommend Sig balsa struction has performed flawlessly 15-20 foil latter leading edge upwho inexperienced insecure select- mph winds beginners backup per camber same thin air ing wood Sig accurately grades its balsa ac- model recommend flat-bottomed air- foil cording density particular airfoil section used models distinguishing feature Its adapted specifically P-30s using de sign parameters outlined Barnaby Wainfan article mentioned earlier Ive corporated such airfoils models Coupe Bostonian Embryo size catego ries seen improved glide performance case crucial features airfoil leading edge LE radius upper camber lower camber Increasing leading edge radius will significantly crease drag wing Sand lead ing edge nearly sharp contour Overlap ping tissue will provide proper ra dius approximately mm upper camber designed provide maximum lift inducing separa tion boundary layer air caus es drag lower camber also helps re tard separation less critical com promise structural integrity obvious defect wing yet sparless conBy winding prop nose block attached motor author says can wind rubber way fuselage put block place unhook winderall never touching rubber motor winding stooge handy thing have too Without car may way get flying field Box made foam core board attaches bike rack hooks #64 rubberbands Authors box can carry two Quick Ones extra rubber motors winding stooge made c wire Addi tional bag carries winder rubber lube glue etcanother has lunch May 1989 75 Ce QUICK ONE P30 SODS tOSS 4RSNC WOO 025 57 JOHN AVA CSDSARG5502 II Li Li i 0 0 Li C LiI 2 ii ii F F] EL ii Li II CA E 0 LiA ~jLi Li Li Li Li Li J Li i I -I Building wing quite simple sure notch leading trailing edges prior construction Doing greatly increases contact area glue joints adding considerable strength cut off wing tips dihedral break carefully sand LE TE fit together form proper dihedral angle Since wing 32 long least 4 dihedral required under tip bring pro jected span down 30 Fuselage judgment good fuselage must satisfy four criteria First must sufficiently durable both structure its componentsnose dethermalizer DT wing mounts etcperform reliably predictably several seasons Sec ond its weight must distributed well eliminate need ballast Third fu selage must have tough motor tube able withstand motor breakage torque Fourth must have trustworthy dether malizer will work 100% time bring model down first official flight P-30 Nats lasted over seven min utes stab DTed fuselage model designed nose heavy allow wing po sitioned farther forward center-ofgravity near center rubber motor cross-grained sheeting motor tube helps shift weight ward its also rigid resistant break age motor should blow type construction standard Wakefields before rolled tubes came use make sheeting cut sheet A2 x 3-in balsa 4-in lengths glue side side After drying carefully cut assembly four strips two 5A6and 1-in widths Make some extra sheeting build pylon nose block critical mechani cal soundness model Too often m sufficient attention paid construction nose block resulting inconsistent flights constant readjustment fore stall problems use harder wood block minimize wear chose /16 music wire prevent bent prop shafts brass wire soldered front bearing keep pushing out block model comes down nose first DTed stout front end war ranted Since winding model often awk ward chore particularly heat com petition used winding loop front shaft also suggest clearly marking keying top nose block en sure its always inserted right-side-up dethermalizer might strike appropriate first its 100% effective bringing model down Having wing dethermalize promotes posi tive reaction model during landing weight mechanism over center-of-gravity rather way out end tail moment make DT positive wing pops forward Continued page 180 76 Model Aviation Full-Size Plans Available. See Page 202 II II AC N Get STICKS. and Fly RIGHT! U VUP C1 WE W f1 kI I[CU l rii -ly a-- t Primary Flight Training Program Videoc Teaches basic flight control safety Demonstrates training procedures flight lessons Explains frequency control field rules Utilizes Ground School Flight training Text Beginners Guide Radio Control Sport 2 Flying Douglas R Pratt Tab Books Inc Includes information Academy Model Aeronautics v STRUCTURE YOUR LEARNING PROCESS FROM PURCHASE TO LANDING - AVOID PREMATURE CRASHES AND UNNECESSARY EXPENSES k LEARN PROPER SAFETY AND CONTROL LEARNING 10 FLY EASY LY INCREASE YOUR CHANCES OF SUCCESS v GREAT FOR CLUB INSTRUC TORS & HOBBY SHOP OWNERS - C ADDS UP TO PP[DJ~ H {O] D1 BETTER NYROD THE ORIGINAL 1&tthQ PUSH ROD COMPLETE WITH ALL REQUIRED METAL FITTINGS IDEALLY SUITED FOR ANY PUSH ROD TIONrjjss ROD\ RUDOERS ELEVATORS AILERONS THROTTLEHARDWARE INCLUDED CONTROL BOATS SEA PLANES. YOUR14 NYRODapterplCE ie IMAGINATION1-8 Rod 2-58 Threaded end 79 34 LONG ASSEMBLED LENGTHCat NYROD SUPR4JN PR00UCT NC 16600 Stat Route 47 E 664721 ONa John doesnt know know last quarter century has very real sense father Old-Timer movement SAM has maintained excellent column Model Builder magazine Old-Timer sub jects called Plug Sparks covers FF RC Control Line matters John has years Engine Month feature column detailed scaled draw ings old engines along paragraph two interesting history personalities volved design production engine Gee say wish col lected published separately dont have have 20-year magazine collection Have got good news John has collected articles Engine Month printed drawings full size now sale two volumes would believe called Vol 1 Vol 2 mere $25 Same address catalogs plans John Pond PO Box 90310 San Jose CA 95109-3310 Also think John still has few Paul Plecans large 24 x 35 drawings famous Free Right models prices $3 folded $5 tube until gone works art will want put workshop wall wife wont let put up bed room wife wont let hang Gas models over bed since McCoy 60 did tend drip oil enjoy hearing address logo head column want re ply please include SASE magazine will pay $5 photos submitted use will get original back send postage SASE purpose Quick One/Jahnke Continued page 76 backward model falls nose first flying surfaces able generate lift would disaster larger heavier model would fall quite fast attitude P-30s lightness prevents rapid descent Though may disconcerting first time works youll soon recognize dether malizers advantages over pop-up stab stabilizer rudder standard construction Keeping lightweight critical balance model may change shape rudder aes thetic reasons desired stabilizer old Poly HLG served origi nal template rudder shown Covering greatly enhances structural tegrity model well qual ity materials Quick should cov ered good-quality lightweight Japanese tissue use Kyosho tissue Old Timer Models manufacturers Indoor supplies sell good Japanese tissue Use favorite method covering model note four suggestions 1 experience nitrate dope best covering adhesive because wont cause warps water-based glues will 2 covering wing cover bottom first Its important adhere tissue rib maintain contour lower cam180 Model Aviation ber Before covering top wing run dope along side ribs juncture bottom covering inside top will ensure tissue well adhered wont pull away shrunk 3 Double cover first open bay tail boom provide strong tran sition between sheeting open structure 4 Lap excess tissue over wire hooks prevent pulling out Finishing After water shrinking cover ing assemble glued-together parts give model three coats nitrate dope has mixed ratio 12 thinner Protect finish frequently handled nose block against wear giving flying Before heading flying field make sure except 46 washout both wing tips model warp free Begin test flying Quick gliding over grass Play tilt inci dence stabilizer achieve long flat glide right Next begin short power flights Aim strong right-hand climb steep possible stalling Downthrust will control stall Use right thrust rudder control turn keep ing mind rudder movement will also affect turn glide As pattern im proves add power make adjustments compensate full power model should climb rap idly make two three circles before prop begins freewheel transition apex power glide should al undetectable practice javelinstyle launch possible using rubber ac cess hole fuselage finger rest After model well trimmed its ad visable continue practice flying famili arize yourself airplane perti nent field procedures flying least night week during summer vacation Im able set up efficiently concentrate finding thermal air go contest arent much interested con tests being prepared will make flying enjoyable know youre going like models outstanding performance envelope Above Quick should fun ques tions comments welcome Send Ross Jahnke W65 N727 St John Ave Cedarburg WI 53012 Mitwaukee/Noonan Continued page 79 school building background todays University WisconsinMilwaukee J shows models equipped ROG gear Numbers wings flying order picture taken practice session team members chosen snapped Clarence Bates model can seen ground lower left long-ago members recalled trip Chicago Instead train Lynn chose lake steamer side paddle wheels ing totally inexperienced lake travel chose cabin next paddle wheel hous ing resulting noisy sleepless night concerned Upon arrival Chicago club members guests IMAC special meeting honoring guests theater party given IMAC sponsors Next day enjoyed sightseeing tour Chicago followed contest Sunday August 15 1915 Results mixed Milwaukee won best average duration 72 sec Chicagos 711 182 Model Aviation three additional coats Finally dump some unthinned dope down motor tube protect rubber lube ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE VINTAQE -C ILAN C ON S OLIDATE D PBY-5A CATALINA 9 FT WING SPAN Al RIBS S EULL FORMERN SHOWN ON PLANS1 PLAsTIC ENGCOWLS $1090 PR CLEAR GJN BLISTERS $ 760 PR 4 LARGE PLAN SHEETS s 6FT WING SPAN MODEL PBY-SA ENGINE COWLS $ZSO PR Plans $1495 GUN BLISTERS $ 550 PR ADO $ SOO POSTAGE CATALOGOVER 50 PLANS tiOO DEALERS WRITE W5t @WE SID MORGAN 13157 ORMOND 8ELLEVILLEMICH 48111 USA