G\LLISIO John Rimmer GREEK MYTHOLOGY tells us Callisto beautiful nymph loved Zeus Ruler Heavens placed sky constellation Ursa Major Latin meaning word beauti ful Callisto can poetically termed beautiful heavenly lady believe will find fune tionallv sound aesthetically pleas ing tothe eye raving judge fact fiction average sailplane enthusiast ~ould have no trouble listing important characteristics expected perfect sailplane would Steep climb very high launch altitude practically first place Nats other wins under its belt Standard Class sailplane has special design features give extraordinary performance hands off no tip stall 2 Very low wing loading around 5 oz/ft minimum sink rate 3 Good L/D penetration 4 safe vertical dive ability escape booming thermal lose altitude quick ly two-minute 10-minute precision flight 5 Stable flat turn characteristics thermal work 6 Easily controlled reasonably slox4 precise landing approach 7 A fairly sturdy airframe withstand wrath Earth gods tempted unsuspecting sailplane pilot having mental lapse Callisto gets excellent marks points 12 chord wing having 6% airfoil produces steep climb very good penetration low wingloading use dive-brake-type flaps maintains about 25 mph speed vertical dive also enable pilot quickly change minimum sink fast descent landing approach molded balsa ply fuselage strongest lightest struc ture have found date includes epoxy glass types Make longitudinal seam between two side pieces top bottom try wrap side piece around tail cone because \ill cause severe warp fuselage removed same other side will have make 1 diagonal cut belly just aft tow-hook position frac tures due compound curve avoided Completely cover rest plug similar fashion ie cutting roll ing piecing second fuselage much easier now takes about two hours complete Sand down rough edges make sure no voids balsa adhering plug everywhere Crush three pieces oF 1/32 sheet against hard surface curl lengthwise about 10-in radius Apply contact cement such Weldwood inside curled pieces plug Apply crossgrain first layer 52 Model Aviation Most conspicuous aerodynamic feature dive-brake flaps enable model maintain 25-mph straight-down attitude escape booming thermals make quick changes approach minimum sink fast descent illustrated picture molded fuselageby laminations different grain directionsia strongest author has seen including fiberglass shown wing cut-Out radio installation hatch removed balanced hinging flaps also apparent using ammonia beginning middle radio area working toward end Alternate end joints ter minate wrap joints should alternated along side coinci dent joints avoided layer complete sand give good hard rolling Apply contact cement plug three pieces 1/16 X 3 X 36 soft balsa about 05 oz two pieces used sides should have end cut off diagonally joint area nose will match first layer joint plywood doubler would correct type weakness Complete layer similar manner first longitudinal seams first third layers must coincide second layer obvious reasons Any two first third layer butt-joints seams coincide will weaken structure permissible have longitudinal seams first third coincide least harmful seams tight balsa has dried make cuts along desired outline canopy fuselage remove Make long cut bottom fuse lage about 10 long toward tail nose Carefully slide fuselage rear ward off plug masking tape easily twisted out tail cone piece 3/16 iano wire having fork cut end Dremmel carborundum cutter center panels wing two polyhedral tips begun pinning down 4 x 32 hard balsa spar-plate gluing soft balsa ribs install ing 8 spars spruce center section hard balsa tips Hot Stuff vertical grain soft balsa webbing trailing edge should glued place good white glue such Wilhold trailing edge left out flaps will go two top bottom 1/16 hard strips extending outward center wing just forward flap remaining bottom sheeting now glued place Hot Stuff Dont forget epoxy 1/16 ply screw plates onto spar plate under forward end two center wing ribs After applying another liberal coat white glue vertical grain spar web bing fit install top leading-edge sheeting leading edge holes flap torque rod cut /8 ID brass tubing slotted end 1/8 aluminum welding rod flattened drilled end / 16 iron weld ing rod flap pushrod inserted center section bend made soft aluminum torque rod after inserted Roughen I-in long brass bushings file slip position over torque rod epoxy place bent end torque rod should just clear Monokote wing covered bottom sheeting wing cut out allow final bending movement inboard flap torque rod center sections wing joined stall flap pushrod tape forward position remove tape before covering wing other desirable flight characteristics result fairly standard design fea tures Callisto easiest ship build perfection never easily achieved would encouraging new designer say Callisto begun day seven character istics mind wasnt ship evolved over period two half years going through four major prototypes 10 different sailplanes small improvements followed important design changes ship would too lengthy describe changes reasoning behind should sufficient say practical reason shape feature Callisto Although room improve ment am still work de sign represents successful stopping point worthy try soaring enthusiasts period development occurred tween numerous contests held Hous ton Dallas Fort Worth Waco probable contests Callisto would exist would still flying first effort modeler can see things friendly gatherings will open eyes new horizons al ways true case fortunate new prototype successful its predecessor fact Callisto seldom came home contest March1976 53 benefits molded constructionin addition great strengthis thin wall thick ness permits slimmer fuselage Callisto some brass often first place Just dont get idea pilot does winning Callisto loaned friend owned radio four months flew third fourth contests placed second third contest walked off third fourth places against some best pilots Texas fourth contest after two hours practice about eight flights During practice session able verify last two spot landing requirements LSF Level comment easy fly has no bad habits three aspects Callisto design will problem possibly deterrent average builder order difficulty molded balsa ply fuselage flaps associated controls full flying stab Hopefully fol lowing construction notes will simplify some problems molded fuselage made rough ly shaped wooden plug described RCM July 1971 Dont weaken finished first plug about three hours using borrowed band saw l 10 carpenters plane Obtain 40 4 X 4 white pine redwood two 2 ued together may used drill closely possible parallel hole end Glue 10 long 1/2 diameter iron rods holes Make stand-offs 2 X 4 scraps plug blank about 10 above work bench clamped down scissor clamp end rods necessity prevent plug turning working plane coarse sandpaper exact shape plug critical long nose long enough make lead ballast unneces sary radio compartment large enough radio common errors making tail cone too large should about pending too much time making smooth symme trical shape plug sure make about / 16 smaller inside dimensions fuselage allow masking tape Saran Wrap goes first After Saran Wrap start tail covering fuselage masking tape wrapping sticky side out holds first layer balsa plug Stick piece 1/32 X 3 X 36 soft balsa about 04 oz along side plug Add ammonia water sponge using smooth 1 pipe roll balsa down plug longitudinal grain balsa tail cone must have breaks joints can add piece area nose complete side piece since joint will strengthened 1/32 plywood doubler epoxy center panels wing sanded good fit proper dihedral angle plywood dihedral brace slots made fine-tooth hand saw two hacksaw blades clamped together di hedral braces tack-glued place Hot Stuff microballoons maintain proper dihedral two three liberal coats Formula II Hobbypoxy applied first coat heat gun allow better penetration balsa last coat microballoons complete filling polyhedral tip support pins tubing epoxied place before braces sheeting polyhedral joint ribs installed wire pins should bent dihedral rather angled down wing tip remaining straight proper polyhedral angle obtained Finish closing flap opening wing indicated Fit tape top bottom flap place glue together rear convolution cut slots wing flap lap hinges glue place Hot Stuff Re move hinge pins tape flap portion hinge will keep flap spaced properly balsa fill epox ied place end forward opening flaps U-shaped wire brass tubing end flap pushrod installed after wing covered position U-shaped wire critical governs amount flap travel may have repositioned obtain desired 600 travel Dont worry about force required position flaps cause aerodynamically balanced due hinge position Cut 12 X 1 opening fuselage around wing saddle will formed Contact glue 1/32 plywood fuselage doublers inside radio com partment rear wing saddle doublers inside fuselage Good contact glue joints important because hard wood wing mount blocks will epoxied nose block tail cone epoxied place Note tail cone protrudes molded fuselage about /8 vertical stab sandwich construc ted stabilator hinge wire epoxied soldered place Better alignment visual can achieved wing fitted fuselage bolted place before stab assembly epoxied place stabilator control horn made DuBro aileron bellcrank associated snap-link pushrod must place stab epoxied tail cone slot right because difficult remove afterward changes Close-up flap torque rod before bending runs through brass tubular bearing transmitter left hand Rimmer launches Callisto 60-degree angle 1—RNRR0/ASS CLOTH ARE EPOXY COAT 0/ER CENTER SECTEINp3/325M SOFT FLL N IJiL SF51 RAAEL 2FATLL SCREW U 1r II -RI Ply 3/3SH MED TOP AND BORIIEIE /E SCEEWSt3IIX SD E VIED RE/ES TURNG-UOLDER FOR ADUJSTMENT VIE STL WELDED ROD [Y/LLDIED NOR[SPAN 1NALSENISAlMx,sUmEE ALL AIRS 302 SOFT L3/32SH-MEU WEB WERHEAL 0/A N-DJLALF DIE USED UAL,OW k3/32oUSSE1-S ALL ROTEDA SPEEDED IS 3/3D 11 K lIE ID RE/ES TARSO ROTE DO SOT SEW I/S WIRESEE -OLES IN WT 2/ETI &U2 ALL TOP 5-FETING STE E/EIDrJ TURING 3/32 SH TOP &SOTT0/1 ROHOAL FLARSAP PLUAOOR FLAP SINGE DETAILS WIND DIHEDRAL MAXIMUM COETHOF VIcE/EMEND AT TRAIL ND EDRES STARLADOR UP TO SOWN 3 RLHLEFT DO ROST 15 ARE ___QQOQO-O 1/A WIHEASS2IHI/A HALSA 2ND ERDUPSPAS322 IN PLACETP RU ERETANER -SEE 0/TELPIANO _____________1/64 FLUTUE WIRESNASS DSC SODEREDWEE 134561/16 IDNEASS TASIND UTOT FOR STAR _________OMIT SALSA THIS AREA — -------- Kr -iiIIIISTARILATOR DREERAL II II5II IilI III IIII I-IF- -1 II IIII -IL II P HWND SECCON AT FLAP PUSH ROD 2-SE 500 & NATWEARING HEEL POUTEUCRYT AS NOTED MODIFIED Efl AILERON F-----I----25 0/ILL 53D TAPSE/CRAMS AND METAL E-Z LINE UERTICAL STAN TEMPLATE ND PARTS ARMY3/IN TRICK RE ANREARRE SO SEAj C/G SHORT HORN & NI/AR 0141 CALLISTO STANDARD CLASS SAILPLANE 1/32 PLY\ECYLXIARES 2 SEOD SPARS BE NARSINIS BY JOHN JUMMER 1/4 piMp 2 MAPLE 0 4 11 31 stabilators constructed correctly 1/16 wire goes through slot belicrank should have maximum travel stop nothing un usual about rest empennage con struction use light medium balsa Hot Stuff throughout except 1/64 plywood top bottom stabila tor root epoxied canopy made molded piece cut away fuselage removed plug inside fuselage coat ed Hobbypoxy Formula II back area towhook additional strength withstand hard landing occasion winch line has broken about 30 ft Callisto did whipstall followed straight down crash no damage except pride structure complete fuse lage covered Super Monokote rest covered Seal-lamin Lamco laminating mylar one-ounce fivedollar saving works just like Monokote considering is about 30% thinner pigment Look office sup ply stores couldnt build large wing sailplanes covering Super Monokote strips used polyhedral joints visibility resist ance tearing tape applied re moved rudder installed large DuBro hinges after covering radio installation straight forward servo position allows easy access important note flap servo arm longest available points almost straight rear line flap pushrod flaps up posi tion puts maximum force flaps tight closure least likely stall servo little force servo during after flap deployment try get least 600 travel greater amount continued page 78 56 Model Aviation Wrapping masking tape plugsticky side Outin preparation laying balsa Second layer sheet wrapping complete end joints staggered dont show inira iayer sneering going Note diagonal cut joint side radio compartment Another view step shown above Mold covered Saran Wrap before taping First layer 1/32 sheet being wrapped procedure outlined detail article Authors balsa crusher rolling Article describes rolling 1 rod formica Second layer balsa sheeting being wrapped Core its holder described text Third layer sheeting laying below work took designer three hours make plug ribs after block sanding Rib stacking familiar practice process scary Exhaust Extension Perfect scale other applications extension needed no muffler required unit has machined locating slot fit engines no adaptors needed Extension 2% long comes complete mounting hardware Three sizes small 15 25 engines medium 29 40 large 49 80 $450 Manifolds available two styles will work boats cars airplanes Both come three sizes small 15-25 engines medium 29-40 large 45-80 have un iversal mounting slot eliminate need adaptor Suggested retail price $495 Throttle engine exhaust type throttle system comes three standard sizes Small 15-25 engines Medium 2940 Large 45-80 mounting slot el iminates need adaptors $695 special model exhaust throttle made OPS 40 60 engines using tuned pipe $1495 shown 300cc fuel tank especially designed boating use gravity feed type fuel pickup located bottom tank Molded extremely fuel resistant plastic tank features twist top fast fueling Suggested retail price $225 Semco makes 280 accesso ries models Send 25 catalog of mufflers tools hardware accessories available Semco Gee Bee/Haffke continued naoe 9 fairing stacked parts should weigh ted glue dries thoroughly dry halves may dowled align ment may tack glued carving shape finished two halves sandwiched over wire secured together short sheet-metal screws Engine Cowl Cowl rings cowl mount cut various sizes shown plans a /8 ply rings glued together a ring 1/8 ply mount Space 3 apart plank 3/16 strips sheet may used wetting help curvature prefer Cowl carved sanded shape thoroughly dry 18 cowl bumps carved scrap balsa cemented place After cowl finished may fitted firewall retained three short sheet-metal screws Mine need ed small hole glow plug used exhaust extension out bottom cowl can make available molded plastic cowl wheel fairings anyone wishing avoid building parts may inquire about parts writing Aero Classics PO Box 2156S Vineland NJ 08360 desire build model Maude Taits NR-l 1049 cowling may formed using large coffee can other appropriate size cylinder wrap around can 2/2strip 1/16 ply second layer 1/16 ply wrapped over first joints staggered layers balsa may added build up proper thickness dry carved sanded shape Maude Taits aircraft standard windshield two-seat version used simple tail skid place faired tail wheel Finishing model up individ ual much has written covered structure Silkspan finished Super Monokote model very strong light Mine weighed just over 5 lbs ready fly may add whatever small details wish such wing tail struts flying wires give real character model first model flew beautifully its very first flight Right rudder needed takeoff once air flew hands off just little trim adjustment proved very stable gentle very positive controls model difficult build structure very strong light finished external bracing wires very attractive ship Data Sources Racing Planes Guide Joe Christy 62 Rare Racing Planes Maj Truman Weaver Call Mr Airshow Bill Sweet NationalAir Racers 3 Views Charles Mendenhall Gee Bee Racers Profile Publication #51 Pete Bowers Model Aircraft Aug 1957 American Modeler July 1958 Callisto/R im mer rnntin,4 paqe 56 say 900 doesnt improve effectiveness very much first flight rudder should have about 200 movement side cen ter stabilator should least 15 up 15 down stabilator should about 3/16 up rear trim neutral sight along bottom wing gentle hand glide should give slow stable descent no tendency nose up stall Have radio onyou wouldnt want Callisto lost now first launch either winch high-start should made initially inclined up about 30 Later near vertical heave can tried using about 15 pounds tension Watch tip sections wing flex indication proper tension center section does bend CG tow-hook positions correct no warps ship should climb out slight up elevator full up trim Change trim back neutral just fore release heading begins weave uncertainly trim nose down slightly Try flaps altitude first can safely get familiar rapid loss forward speed resulting trim change change trim does occur immedi ately two seconds after flaps full down Since arent used speed decreasing nose down flaps can deceiving first during ap proach landing After have some confidence flying ship lower flaps push nose over vertical dive get ready biggest thrills Dont forget moving about 25mph 2200 ft/mm 37 ft/sec straight down Its easy miscalculate perform ultimate structural test Due low drag can dip nose pick up speed level out achieve sustained penetration unbelieveable ship such low wing loading Most standard ships would have weigh twice much Callisto have same penetrating ability much greater sink rate problem faster speed controls much sensitive dont slow down excessive control movement Smoothness way achieve maximum pos sible efficiency adjust Callisto approximately neutral pitch stability Pos itive stability can achieved nose ballast stabilator drag higher wing loading result Callisto once made seven minute hands off flight during required fun fly event flight would have much longer controlled flight allowed could go seemingly indefinitely about Callisto after few flights will Good luck PROTECT YOUR RIGI4TTO FLY Safe Flying No Accident 78 Model Aviation Exhaust Manifolds Exhaust Throttle tioat I-uel lank
Edition: Model Aviation - 1976/03
Page Numbers: 52, 53, 54, 55, 56, 78
G\LLISIO John Rimmer GREEK MYTHOLOGY tells us Callisto beautiful nymph loved Zeus Ruler Heavens placed sky constellation Ursa Major Latin meaning word beauti ful Callisto can poetically termed beautiful heavenly lady believe will find fune tionallv sound aesthetically pleas ing tothe eye raving judge fact fiction average sailplane enthusiast ~ould have no trouble listing important characteristics expected perfect sailplane would Steep climb very high launch altitude practically first place Nats other wins under its belt Standard Class sailplane has special design features give extraordinary performance hands off no tip stall 2 Very low wing loading around 5 oz/ft minimum sink rate 3 Good L/D penetration 4 safe vertical dive ability escape booming thermal lose altitude quick ly two-minute 10-minute precision flight 5 Stable flat turn characteristics thermal work 6 Easily controlled reasonably slox4 precise landing approach 7 A fairly sturdy airframe withstand wrath Earth gods tempted unsuspecting sailplane pilot having mental lapse Callisto gets excellent marks points 12 chord wing having 6% airfoil produces steep climb very good penetration low wingloading use dive-brake-type flaps maintains about 25 mph speed vertical dive also enable pilot quickly change minimum sink fast descent landing approach molded balsa ply fuselage strongest lightest struc ture have found date includes epoxy glass types Make longitudinal seam between two side pieces top bottom try wrap side piece around tail cone because \ill cause severe warp fuselage removed same other side will have make 1 diagonal cut belly just aft tow-hook position frac tures due compound curve avoided Completely cover rest plug similar fashion ie cutting roll ing piecing second fuselage much easier now takes about two hours complete Sand down rough edges make sure no voids balsa adhering plug everywhere Crush three pieces oF 1/32 sheet against hard surface curl lengthwise about 10-in radius Apply contact cement such Weldwood inside curled pieces plug Apply crossgrain first layer 52 Model Aviation Most conspicuous aerodynamic feature dive-brake flaps enable model maintain 25-mph straight-down attitude escape booming thermals make quick changes approach minimum sink fast descent illustrated picture molded fuselageby laminations different grain directionsia strongest author has seen including fiberglass shown wing cut-Out radio installation hatch removed balanced hinging flaps also apparent using ammonia beginning middle radio area working toward end Alternate end joints ter minate wrap joints should alternated along side coinci dent joints avoided layer complete sand give good hard rolling Apply contact cement plug three pieces 1/16 X 3 X 36 soft balsa about 05 oz two pieces used sides should have end cut off diagonally joint area nose will match first layer joint plywood doubler would correct type weakness Complete layer similar manner first longitudinal seams first third layers must coincide second layer obvious reasons Any two first third layer butt-joints seams coincide will weaken structure permissible have longitudinal seams first third coincide least harmful seams tight balsa has dried make cuts along desired outline canopy fuselage remove Make long cut bottom fuse lage about 10 long toward tail nose Carefully slide fuselage rear ward off plug masking tape easily twisted out tail cone piece 3/16 iano wire having fork cut end Dremmel carborundum cutter center panels wing two polyhedral tips begun pinning down 4 x 32 hard balsa spar-plate gluing soft balsa ribs install ing 8 spars spruce center section hard balsa tips Hot Stuff vertical grain soft balsa webbing trailing edge should glued place good white glue such Wilhold trailing edge left out flaps will go two top bottom 1/16 hard strips extending outward center wing just forward flap remaining bottom sheeting now glued place Hot Stuff Dont forget epoxy 1/16 ply screw plates onto spar plate under forward end two center wing ribs After applying another liberal coat white glue vertical grain spar web bing fit install top leading-edge sheeting leading edge holes flap torque rod cut /8 ID brass tubing slotted end 1/8 aluminum welding rod flattened drilled end / 16 iron weld ing rod flap pushrod inserted center section bend made soft aluminum torque rod after inserted Roughen I-in long brass bushings file slip position over torque rod epoxy place bent end torque rod should just clear Monokote wing covered bottom sheeting wing cut out allow final bending movement inboard flap torque rod center sections wing joined stall flap pushrod tape forward position remove tape before covering wing other desirable flight characteristics result fairly standard design fea tures Callisto easiest ship build perfection never easily achieved would encouraging new designer say Callisto begun day seven character istics mind wasnt ship evolved over period two half years going through four major prototypes 10 different sailplanes small improvements followed important design changes ship would too lengthy describe changes reasoning behind should sufficient say practical reason shape feature Callisto Although room improve ment am still work de sign represents successful stopping point worthy try soaring enthusiasts period development occurred tween numerous contests held Hous ton Dallas Fort Worth Waco probable contests Callisto would exist would still flying first effort modeler can see things friendly gatherings will open eyes new horizons al ways true case fortunate new prototype successful its predecessor fact Callisto seldom came home contest March1976 53 benefits molded constructionin addition great strengthis thin wall thick ness permits slimmer fuselage Callisto some brass often first place Just dont get idea pilot does winning Callisto loaned friend owned radio four months flew third fourth contests placed second third contest walked off third fourth places against some best pilots Texas fourth contest after two hours practice about eight flights During practice session able verify last two spot landing requirements LSF Level comment easy fly has no bad habits three aspects Callisto design will problem possibly deterrent average builder order difficulty molded balsa ply fuselage flaps associated controls full flying stab Hopefully fol lowing construction notes will simplify some problems molded fuselage made rough ly shaped wooden plug described RCM July 1971 Dont weaken finished first plug about three hours using borrowed band saw l 10 carpenters plane Obtain 40 4 X 4 white pine redwood two 2 ued together may used drill closely possible parallel hole end Glue 10 long 1/2 diameter iron rods holes Make stand-offs 2 X 4 scraps plug blank about 10 above work bench clamped down scissor clamp end rods necessity prevent plug turning working plane coarse sandpaper exact shape plug critical long nose long enough make lead ballast unneces sary radio compartment large enough radio common errors making tail cone too large should about pending too much time making smooth symme trical shape plug sure make about / 16 smaller inside dimensions fuselage allow masking tape Saran Wrap goes first After Saran Wrap start tail covering fuselage masking tape wrapping sticky side out holds first layer balsa plug Stick piece 1/32 X 3 X 36 soft balsa about 04 oz along side plug Add ammonia water sponge using smooth 1 pipe roll balsa down plug longitudinal grain balsa tail cone must have breaks joints can add piece area nose complete side piece since joint will strengthened 1/32 plywood doubler epoxy center panels wing sanded good fit proper dihedral angle plywood dihedral brace slots made fine-tooth hand saw two hacksaw blades clamped together di hedral braces tack-glued place Hot Stuff microballoons maintain proper dihedral two three liberal coats Formula II Hobbypoxy applied first coat heat gun allow better penetration balsa last coat microballoons complete filling polyhedral tip support pins tubing epoxied place before braces sheeting polyhedral joint ribs installed wire pins should bent dihedral rather angled down wing tip remaining straight proper polyhedral angle obtained Finish closing flap opening wing indicated Fit tape top bottom flap place glue together rear convolution cut slots wing flap lap hinges glue place Hot Stuff Re move hinge pins tape flap portion hinge will keep flap spaced properly balsa fill epox ied place end forward opening flaps U-shaped wire brass tubing end flap pushrod installed after wing covered position U-shaped wire critical governs amount flap travel may have repositioned obtain desired 600 travel Dont worry about force required position flaps cause aerodynamically balanced due hinge position Cut 12 X 1 opening fuselage around wing saddle will formed Contact glue 1/32 plywood fuselage doublers inside radio com partment rear wing saddle doublers inside fuselage Good contact glue joints important because hard wood wing mount blocks will epoxied nose block tail cone epoxied place Note tail cone protrudes molded fuselage about /8 vertical stab sandwich construc ted stabilator hinge wire epoxied soldered place Better alignment visual can achieved wing fitted fuselage bolted place before stab assembly epoxied place stabilator control horn made DuBro aileron bellcrank associated snap-link pushrod must place stab epoxied tail cone slot right because difficult remove afterward changes Close-up flap torque rod before bending runs through brass tubular bearing transmitter left hand Rimmer launches Callisto 60-degree angle 1—RNRR0/ASS CLOTH ARE EPOXY COAT 0/ER CENTER SECTEINp3/325M SOFT FLL N IJiL SF51 RAAEL 2FATLL SCREW U 1r II -RI Ply 3/3SH MED TOP AND BORIIEIE /E SCEEWSt3IIX SD E VIED RE/ES TURNG-UOLDER FOR ADUJSTMENT VIE STL WELDED ROD [Y/LLDIED NOR[SPAN 1NALSENISAlMx,sUmEE ALL AIRS 302 SOFT L3/32SH-MEU WEB WERHEAL 0/A N-DJLALF DIE USED UAL,OW k3/32oUSSE1-S ALL ROTEDA SPEEDED IS 3/3D 11 K lIE ID RE/ES TARSO ROTE DO SOT SEW I/S WIRESEE -OLES IN WT 2/ETI &U2 ALL TOP 5-FETING STE E/EIDrJ TURING 3/32 SH TOP &SOTT0/1 ROHOAL FLARSAP PLUAOOR FLAP SINGE DETAILS WIND DIHEDRAL MAXIMUM COETHOF VIcE/EMEND AT TRAIL ND EDRES STARLADOR UP TO SOWN 3 RLHLEFT DO ROST 15 ARE ___QQOQO-O 1/A WIHEASS2IHI/A HALSA 2ND ERDUPSPAS322 IN PLACETP RU ERETANER -SEE 0/TELPIANO _____________1/64 FLUTUE WIRESNASS DSC SODEREDWEE 134561/16 IDNEASS TASIND UTOT FOR STAR _________OMIT SALSA THIS AREA — -------- Kr -iiIIIISTARILATOR DREERAL II II5II IilI III IIII I-IF- -1 II IIII -IL II P HWND SECCON AT FLAP PUSH ROD 2-SE 500 & NATWEARING HEEL POUTEUCRYT AS NOTED MODIFIED Efl AILERON F-----I----25 0/ILL 53D TAPSE/CRAMS AND METAL E-Z LINE UERTICAL STAN TEMPLATE ND PARTS ARMY3/IN TRICK RE ANREARRE SO SEAj C/G SHORT HORN & NI/AR 0141 CALLISTO STANDARD CLASS SAILPLANE 1/32 PLY\ECYLXIARES 2 SEOD SPARS BE NARSINIS BY JOHN JUMMER 1/4 piMp 2 MAPLE 0 4 11 31 stabilators constructed correctly 1/16 wire goes through slot belicrank should have maximum travel stop nothing un usual about rest empennage con struction use light medium balsa Hot Stuff throughout except 1/64 plywood top bottom stabila tor root epoxied canopy made molded piece cut away fuselage removed plug inside fuselage coat ed Hobbypoxy Formula II back area towhook additional strength withstand hard landing occasion winch line has broken about 30 ft Callisto did whipstall followed straight down crash no damage except pride structure complete fuse lage covered Super Monokote rest covered Seal-lamin Lamco laminating mylar one-ounce fivedollar saving works just like Monokote considering is about 30% thinner pigment Look office sup ply stores couldnt build large wing sailplanes covering Super Monokote strips used polyhedral joints visibility resist ance tearing tape applied re moved rudder installed large DuBro hinges after covering radio installation straight forward servo position allows easy access important note flap servo arm longest available points almost straight rear line flap pushrod flaps up posi tion puts maximum force flaps tight closure least likely stall servo little force servo during after flap deployment try get least 600 travel greater amount continued page 78 56 Model Aviation Wrapping masking tape plugsticky side Outin preparation laying balsa Second layer sheet wrapping complete end joints staggered dont show inira iayer sneering going Note diagonal cut joint side radio compartment Another view step shown above Mold covered Saran Wrap before taping First layer 1/32 sheet being wrapped procedure outlined detail article Authors balsa crusher rolling Article describes rolling 1 rod formica Second layer balsa sheeting being wrapped Core its holder described text Third layer sheeting laying below work took designer three hours make plug ribs after block sanding Rib stacking familiar practice process scary Exhaust Extension Perfect scale other applications extension needed no muffler required unit has machined locating slot fit engines no adaptors needed Extension 2% long comes complete mounting hardware Three sizes small 15 25 engines medium 29 40 large 49 80 $450 Manifolds available two styles will work boats cars airplanes Both come three sizes small 15-25 engines medium 29-40 large 45-80 have un iversal mounting slot eliminate need adaptor Suggested retail price $495 Throttle engine exhaust type throttle system comes three standard sizes Small 15-25 engines Medium 2940 Large 45-80 mounting slot el iminates need adaptors $695 special model exhaust throttle made OPS 40 60 engines using tuned pipe $1495 shown 300cc fuel tank especially designed boating use gravity feed type fuel pickup located bottom tank Molded extremely fuel resistant plastic tank features twist top fast fueling Suggested retail price $225 Semco makes 280 accesso ries models Send 25 catalog of mufflers tools hardware accessories available Semco Gee Bee/Haffke continued naoe 9 fairing stacked parts should weigh ted glue dries thoroughly dry halves may dowled align ment may tack glued carving shape finished two halves sandwiched over wire secured together short sheet-metal screws Engine Cowl Cowl rings cowl mount cut various sizes shown plans a /8 ply rings glued together a ring 1/8 ply mount Space 3 apart plank 3/16 strips sheet may used wetting help curvature prefer Cowl carved sanded shape thoroughly dry 18 cowl bumps carved scrap balsa cemented place After cowl finished may fitted firewall retained three short sheet-metal screws Mine need ed small hole glow plug used exhaust extension out bottom cowl can make available molded plastic cowl wheel fairings anyone wishing avoid building parts may inquire about parts writing Aero Classics PO Box 2156S Vineland NJ 08360 desire build model Maude Taits NR-l 1049 cowling may formed using large coffee can other appropriate size cylinder wrap around can 2/2strip 1/16 ply second layer 1/16 ply wrapped over first joints staggered layers balsa may added build up proper thickness dry carved sanded shape Maude Taits aircraft standard windshield two-seat version used simple tail skid place faired tail wheel Finishing model up individ ual much has written covered structure Silkspan finished Super Monokote model very strong light Mine weighed just over 5 lbs ready fly may add whatever small details wish such wing tail struts flying wires give real character model first model flew beautifully its very first flight Right rudder needed takeoff once air flew hands off just little trim adjustment proved very stable gentle very positive controls model difficult build structure very strong light finished external bracing wires very attractive ship Data Sources Racing Planes Guide Joe Christy 62 Rare Racing Planes Maj Truman Weaver Call Mr Airshow Bill Sweet NationalAir Racers 3 Views Charles Mendenhall Gee Bee Racers Profile Publication #51 Pete Bowers Model Aircraft Aug 1957 American Modeler July 1958 Callisto/R im mer rnntin,4 paqe 56 say 900 doesnt improve effectiveness very much first flight rudder should have about 200 movement side cen ter stabilator should least 15 up 15 down stabilator should about 3/16 up rear trim neutral sight along bottom wing gentle hand glide should give slow stable descent no tendency nose up stall Have radio onyou wouldnt want Callisto lost now first launch either winch high-start should made initially inclined up about 30 Later near vertical heave can tried using about 15 pounds tension Watch tip sections wing flex indication proper tension center section does bend CG tow-hook positions correct no warps ship should climb out slight up elevator full up trim Change trim back neutral just fore release heading begins weave uncertainly trim nose down slightly Try flaps altitude first can safely get familiar rapid loss forward speed resulting trim change change trim does occur immedi ately two seconds after flaps full down Since arent used speed decreasing nose down flaps can deceiving first during ap proach landing After have some confidence flying ship lower flaps push nose over vertical dive get ready biggest thrills Dont forget moving about 25mph 2200 ft/mm 37 ft/sec straight down Its easy miscalculate perform ultimate structural test Due low drag can dip nose pick up speed level out achieve sustained penetration unbelieveable ship such low wing loading Most standard ships would have weigh twice much Callisto have same penetrating ability much greater sink rate problem faster speed controls much sensitive dont slow down excessive control movement Smoothness way achieve maximum pos sible efficiency adjust Callisto approximately neutral pitch stability Pos itive stability can achieved nose ballast stabilator drag higher wing loading result Callisto once made seven minute hands off flight during required fun fly event flight would have much longer controlled flight allowed could go seemingly indefinitely about Callisto after few flights will Good luck PROTECT YOUR RIGI4TTO FLY Safe Flying No Accident 78 Model Aviation Exhaust Manifolds Exhaust Throttle tioat I-uel lank
Edition: Model Aviation - 1976/03
Page Numbers: 52, 53, 54, 55, 56, 78
G\LLISIO John Rimmer GREEK MYTHOLOGY tells us Callisto beautiful nymph loved Zeus Ruler Heavens placed sky constellation Ursa Major Latin meaning word beauti ful Callisto can poetically termed beautiful heavenly lady believe will find fune tionallv sound aesthetically pleas ing tothe eye raving judge fact fiction average sailplane enthusiast ~ould have no trouble listing important characteristics expected perfect sailplane would Steep climb very high launch altitude practically first place Nats other wins under its belt Standard Class sailplane has special design features give extraordinary performance hands off no tip stall 2 Very low wing loading around 5 oz/ft minimum sink rate 3 Good L/D penetration 4 safe vertical dive ability escape booming thermal lose altitude quick ly two-minute 10-minute precision flight 5 Stable flat turn characteristics thermal work 6 Easily controlled reasonably slox4 precise landing approach 7 A fairly sturdy airframe withstand wrath Earth gods tempted unsuspecting sailplane pilot having mental lapse Callisto gets excellent marks points 12 chord wing having 6% airfoil produces steep climb very good penetration low wingloading use dive-brake-type flaps maintains about 25 mph speed vertical dive also enable pilot quickly change minimum sink fast descent landing approach molded balsa ply fuselage strongest lightest struc ture have found date includes epoxy glass types Make longitudinal seam between two side pieces top bottom try wrap side piece around tail cone because \ill cause severe warp fuselage removed same other side will have make 1 diagonal cut belly just aft tow-hook position frac tures due compound curve avoided Completely cover rest plug similar fashion ie cutting roll ing piecing second fuselage much easier now takes about two hours complete Sand down rough edges make sure no voids balsa adhering plug everywhere Crush three pieces oF 1/32 sheet against hard surface curl lengthwise about 10-in radius Apply contact cement such Weldwood inside curled pieces plug Apply crossgrain first layer 52 Model Aviation Most conspicuous aerodynamic feature dive-brake flaps enable model maintain 25-mph straight-down attitude escape booming thermals make quick changes approach minimum sink fast descent illustrated picture molded fuselageby laminations different grain directionsia strongest author has seen including fiberglass shown wing cut-Out radio installation hatch removed balanced hinging flaps also apparent using ammonia beginning middle radio area working toward end Alternate end joints ter minate wrap joints should alternated along side coinci dent joints avoided layer complete sand give good hard rolling Apply contact cement plug three pieces 1/16 X 3 X 36 soft balsa about 05 oz two pieces used sides should have end cut off diagonally joint area nose will match first layer joint plywood doubler would correct type weakness Complete layer similar manner first longitudinal seams first third layers must coincide second layer obvious reasons Any two first third layer butt-joints seams coincide will weaken structure permissible have longitudinal seams first third coincide least harmful seams tight balsa has dried make cuts along desired outline canopy fuselage remove Make long cut bottom fuse lage about 10 long toward tail nose Carefully slide fuselage rear ward off plug masking tape easily twisted out tail cone piece 3/16 iano wire having fork cut end Dremmel carborundum cutter center panels wing two polyhedral tips begun pinning down 4 x 32 hard balsa spar-plate gluing soft balsa ribs install ing 8 spars spruce center section hard balsa tips Hot Stuff vertical grain soft balsa webbing trailing edge should glued place good white glue such Wilhold trailing edge left out flaps will go two top bottom 1/16 hard strips extending outward center wing just forward flap remaining bottom sheeting now glued place Hot Stuff Dont forget epoxy 1/16 ply screw plates onto spar plate under forward end two center wing ribs After applying another liberal coat white glue vertical grain spar web bing fit install top leading-edge sheeting leading edge holes flap torque rod cut /8 ID brass tubing slotted end 1/8 aluminum welding rod flattened drilled end / 16 iron weld ing rod flap pushrod inserted center section bend made soft aluminum torque rod after inserted Roughen I-in long brass bushings file slip position over torque rod epoxy place bent end torque rod should just clear Monokote wing covered bottom sheeting wing cut out allow final bending movement inboard flap torque rod center sections wing joined stall flap pushrod tape forward position remove tape before covering wing other desirable flight characteristics result fairly standard design fea tures Callisto easiest ship build perfection never easily achieved would encouraging new designer say Callisto begun day seven character istics mind wasnt ship evolved over period two half years going through four major prototypes 10 different sailplanes small improvements followed important design changes ship would too lengthy describe changes reasoning behind should sufficient say practical reason shape feature Callisto Although room improve ment am still work de sign represents successful stopping point worthy try soaring enthusiasts period development occurred tween numerous contests held Hous ton Dallas Fort Worth Waco probable contests Callisto would exist would still flying first effort modeler can see things friendly gatherings will open eyes new horizons al ways true case fortunate new prototype successful its predecessor fact Callisto seldom came home contest March1976 53 benefits molded constructionin addition great strengthis thin wall thick ness permits slimmer fuselage Callisto some brass often first place Just dont get idea pilot does winning Callisto loaned friend owned radio four months flew third fourth contests placed second third contest walked off third fourth places against some best pilots Texas fourth contest after two hours practice about eight flights During practice session able verify last two spot landing requirements LSF Level comment easy fly has no bad habits three aspects Callisto design will problem possibly deterrent average builder order difficulty molded balsa ply fuselage flaps associated controls full flying stab Hopefully fol lowing construction notes will simplify some problems molded fuselage made rough ly shaped wooden plug described RCM July 1971 Dont weaken finished first plug about three hours using borrowed band saw l 10 carpenters plane Obtain 40 4 X 4 white pine redwood two 2 ued together may used drill closely possible parallel hole end Glue 10 long 1/2 diameter iron rods holes Make stand-offs 2 X 4 scraps plug blank about 10 above work bench clamped down scissor clamp end rods necessity prevent plug turning working plane coarse sandpaper exact shape plug critical long nose long enough make lead ballast unneces sary radio compartment large enough radio common errors making tail cone too large should about pending too much time making smooth symme trical shape plug sure make about / 16 smaller inside dimensions fuselage allow masking tape Saran Wrap goes first After Saran Wrap start tail covering fuselage masking tape wrapping sticky side out holds first layer balsa plug Stick piece 1/32 X 3 X 36 soft balsa about 04 oz along side plug Add ammonia water sponge using smooth 1 pipe roll balsa down plug longitudinal grain balsa tail cone must have breaks joints can add piece area nose complete side piece since joint will strengthened 1/32 plywood doubler epoxy center panels wing sanded good fit proper dihedral angle plywood dihedral brace slots made fine-tooth hand saw two hacksaw blades clamped together di hedral braces tack-glued place Hot Stuff microballoons maintain proper dihedral two three liberal coats Formula II Hobbypoxy applied first coat heat gun allow better penetration balsa last coat microballoons complete filling polyhedral tip support pins tubing epoxied place before braces sheeting polyhedral joint ribs installed wire pins should bent dihedral rather angled down wing tip remaining straight proper polyhedral angle obtained Finish closing flap opening wing indicated Fit tape top bottom flap place glue together rear convolution cut slots wing flap lap hinges glue place Hot Stuff Re move hinge pins tape flap portion hinge will keep flap spaced properly balsa fill epox ied place end forward opening flaps U-shaped wire brass tubing end flap pushrod installed after wing covered position U-shaped wire critical governs amount flap travel may have repositioned obtain desired 600 travel Dont worry about force required position flaps cause aerodynamically balanced due hinge position Cut 12 X 1 opening fuselage around wing saddle will formed Contact glue 1/32 plywood fuselage doublers inside radio com partment rear wing saddle doublers inside fuselage Good contact glue joints important because hard wood wing mount blocks will epoxied nose block tail cone epoxied place Note tail cone protrudes molded fuselage about /8 vertical stab sandwich construc ted stabilator hinge wire epoxied soldered place Better alignment visual can achieved wing fitted fuselage bolted place before stab assembly epoxied place stabilator control horn made DuBro aileron bellcrank associated snap-link pushrod must place stab epoxied tail cone slot right because difficult remove afterward changes Close-up flap torque rod before bending runs through brass tubular bearing transmitter left hand Rimmer launches Callisto 60-degree angle 1—RNRR0/ASS CLOTH ARE EPOXY COAT 0/ER CENTER SECTEINp3/325M SOFT FLL N IJiL SF51 RAAEL 2FATLL SCREW U 1r II -RI Ply 3/3SH MED TOP AND BORIIEIE /E SCEEWSt3IIX SD E VIED RE/ES TURNG-UOLDER FOR ADUJSTMENT VIE STL WELDED ROD [Y/LLDIED NOR[SPAN 1NALSENISAlMx,sUmEE ALL AIRS 302 SOFT L3/32SH-MEU WEB WERHEAL 0/A N-DJLALF DIE USED UAL,OW k3/32oUSSE1-S ALL ROTEDA SPEEDED IS 3/3D 11 K lIE ID RE/ES TARSO ROTE DO SOT SEW I/S WIRESEE -OLES IN WT 2/ETI &U2 ALL TOP 5-FETING STE E/EIDrJ TURING 3/32 SH TOP &SOTT0/1 ROHOAL FLARSAP PLUAOOR FLAP SINGE DETAILS WIND DIHEDRAL MAXIMUM COETHOF VIcE/EMEND AT TRAIL ND EDRES STARLADOR UP TO SOWN 3 RLHLEFT DO ROST 15 ARE ___QQOQO-O 1/A WIHEASS2IHI/A HALSA 2ND ERDUPSPAS322 IN PLACETP RU ERETANER -SEE 0/TELPIANO _____________1/64 FLUTUE WIRESNASS DSC SODEREDWEE 134561/16 IDNEASS TASIND UTOT FOR STAR _________OMIT SALSA THIS AREA — -------- Kr -iiIIIISTARILATOR DREERAL II II5II IilI III IIII I-IF- -1 II IIII -IL II P HWND SECCON AT FLAP PUSH ROD 2-SE 500 & NATWEARING HEEL POUTEUCRYT AS NOTED MODIFIED Efl AILERON F-----I----25 0/ILL 53D TAPSE/CRAMS AND METAL E-Z LINE UERTICAL STAN TEMPLATE ND PARTS ARMY3/IN TRICK RE ANREARRE SO SEAj C/G SHORT HORN & NI/AR 0141 CALLISTO STANDARD CLASS SAILPLANE 1/32 PLY\ECYLXIARES 2 SEOD SPARS BE NARSINIS BY JOHN JUMMER 1/4 piMp 2 MAPLE 0 4 11 31 stabilators constructed correctly 1/16 wire goes through slot belicrank should have maximum travel stop nothing un usual about rest empennage con struction use light medium balsa Hot Stuff throughout except 1/64 plywood top bottom stabila tor root epoxied canopy made molded piece cut away fuselage removed plug inside fuselage coat ed Hobbypoxy Formula II back area towhook additional strength withstand hard landing occasion winch line has broken about 30 ft Callisto did whipstall followed straight down crash no damage except pride structure complete fuse lage covered Super Monokote rest covered Seal-lamin Lamco laminating mylar one-ounce fivedollar saving works just like Monokote considering is about 30% thinner pigment Look office sup ply stores couldnt build large wing sailplanes covering Super Monokote strips used polyhedral joints visibility resist ance tearing tape applied re moved rudder installed large DuBro hinges after covering radio installation straight forward servo position allows easy access important note flap servo arm longest available points almost straight rear line flap pushrod flaps up posi tion puts maximum force flaps tight closure least likely stall servo little force servo during after flap deployment try get least 600 travel greater amount continued page 78 56 Model Aviation Wrapping masking tape plugsticky side Outin preparation laying balsa Second layer sheet wrapping complete end joints staggered dont show inira iayer sneering going Note diagonal cut joint side radio compartment Another view step shown above Mold covered Saran Wrap before taping First layer 1/32 sheet being wrapped procedure outlined detail article Authors balsa crusher rolling Article describes rolling 1 rod formica Second layer balsa sheeting being wrapped Core its holder described text Third layer sheeting laying below work took designer three hours make plug ribs after block sanding Rib stacking familiar practice process scary Exhaust Extension Perfect scale other applications extension needed no muffler required unit has machined locating slot fit engines no adaptors needed Extension 2% long comes complete mounting hardware Three sizes small 15 25 engines medium 29 40 large 49 80 $450 Manifolds available two styles will work boats cars airplanes Both come three sizes small 15-25 engines medium 29-40 large 45-80 have un iversal mounting slot eliminate need adaptor Suggested retail price $495 Throttle engine exhaust type throttle system comes three standard sizes Small 15-25 engines Medium 2940 Large 45-80 mounting slot el iminates need adaptors $695 special model exhaust throttle made OPS 40 60 engines using tuned pipe $1495 shown 300cc fuel tank especially designed boating use gravity feed type fuel pickup located bottom tank Molded extremely fuel resistant plastic tank features twist top fast fueling Suggested retail price $225 Semco makes 280 accesso ries models Send 25 catalog of mufflers tools hardware accessories available Semco Gee Bee/Haffke continued naoe 9 fairing stacked parts should weigh ted glue dries thoroughly dry halves may dowled align ment may tack glued carving shape finished two halves sandwiched over wire secured together short sheet-metal screws Engine Cowl Cowl rings cowl mount cut various sizes shown plans a /8 ply rings glued together a ring 1/8 ply mount Space 3 apart plank 3/16 strips sheet may used wetting help curvature prefer Cowl carved sanded shape thoroughly dry 18 cowl bumps carved scrap balsa cemented place After cowl finished may fitted firewall retained three short sheet-metal screws Mine need ed small hole glow plug used exhaust extension out bottom cowl can make available molded plastic cowl wheel fairings anyone wishing avoid building parts may inquire about parts writing Aero Classics PO Box 2156S Vineland NJ 08360 desire build model Maude Taits NR-l 1049 cowling may formed using large coffee can other appropriate size cylinder wrap around can 2/2strip 1/16 ply second layer 1/16 ply wrapped over first joints staggered layers balsa may added build up proper thickness dry carved sanded shape Maude Taits aircraft standard windshield two-seat version used simple tail skid place faired tail wheel Finishing model up individ ual much has written covered structure Silkspan finished Super Monokote model very strong light Mine weighed just over 5 lbs ready fly may add whatever small details wish such wing tail struts flying wires give real character model first model flew beautifully its very first flight Right rudder needed takeoff once air flew hands off just little trim adjustment proved very stable gentle very positive controls model difficult build structure very strong light finished external bracing wires very attractive ship Data Sources Racing Planes Guide Joe Christy 62 Rare Racing Planes Maj Truman Weaver Call Mr Airshow Bill Sweet NationalAir Racers 3 Views Charles Mendenhall Gee Bee Racers Profile Publication #51 Pete Bowers Model Aircraft Aug 1957 American Modeler July 1958 Callisto/R im mer rnntin,4 paqe 56 say 900 doesnt improve effectiveness very much first flight rudder should have about 200 movement side cen ter stabilator should least 15 up 15 down stabilator should about 3/16 up rear trim neutral sight along bottom wing gentle hand glide should give slow stable descent no tendency nose up stall Have radio onyou wouldnt want Callisto lost now first launch either winch high-start should made initially inclined up about 30 Later near vertical heave can tried using about 15 pounds tension Watch tip sections wing flex indication proper tension center section does bend CG tow-hook positions correct no warps ship should climb out slight up elevator full up trim Change trim back neutral just fore release heading begins weave uncertainly trim nose down slightly Try flaps altitude first can safely get familiar rapid loss forward speed resulting trim change change trim does occur immedi ately two seconds after flaps full down Since arent used speed decreasing nose down flaps can deceiving first during ap proach landing After have some confidence flying ship lower flaps push nose over vertical dive get ready biggest thrills Dont forget moving about 25mph 2200 ft/mm 37 ft/sec straight down Its easy miscalculate perform ultimate structural test Due low drag can dip nose pick up speed level out achieve sustained penetration unbelieveable ship such low wing loading Most standard ships would have weigh twice much Callisto have same penetrating ability much greater sink rate problem faster speed controls much sensitive dont slow down excessive control movement Smoothness way achieve maximum pos sible efficiency adjust Callisto approximately neutral pitch stability Pos itive stability can achieved nose ballast stabilator drag higher wing loading result Callisto once made seven minute hands off flight during required fun fly event flight would have much longer controlled flight allowed could go seemingly indefinitely about Callisto after few flights will Good luck PROTECT YOUR RIGI4TTO FLY Safe Flying No Accident 78 Model Aviation Exhaust Manifolds Exhaust Throttle tioat I-uel lank
Edition: Model Aviation - 1976/03
Page Numbers: 52, 53, 54, 55, 56, 78
G\LLISIO John Rimmer GREEK MYTHOLOGY tells us Callisto beautiful nymph loved Zeus Ruler Heavens placed sky constellation Ursa Major Latin meaning word beauti ful Callisto can poetically termed beautiful heavenly lady believe will find fune tionallv sound aesthetically pleas ing tothe eye raving judge fact fiction average sailplane enthusiast ~ould have no trouble listing important characteristics expected perfect sailplane would Steep climb very high launch altitude practically first place Nats other wins under its belt Standard Class sailplane has special design features give extraordinary performance hands off no tip stall 2 Very low wing loading around 5 oz/ft minimum sink rate 3 Good L/D penetration 4 safe vertical dive ability escape booming thermal lose altitude quick ly two-minute 10-minute precision flight 5 Stable flat turn characteristics thermal work 6 Easily controlled reasonably slox4 precise landing approach 7 A fairly sturdy airframe withstand wrath Earth gods tempted unsuspecting sailplane pilot having mental lapse Callisto gets excellent marks points 12 chord wing having 6% airfoil produces steep climb very good penetration low wingloading use dive-brake-type flaps maintains about 25 mph speed vertical dive also enable pilot quickly change minimum sink fast descent landing approach molded balsa ply fuselage strongest lightest struc ture have found date includes epoxy glass types Make longitudinal seam between two side pieces top bottom try wrap side piece around tail cone because \ill cause severe warp fuselage removed same other side will have make 1 diagonal cut belly just aft tow-hook position frac tures due compound curve avoided Completely cover rest plug similar fashion ie cutting roll ing piecing second fuselage much easier now takes about two hours complete Sand down rough edges make sure no voids balsa adhering plug everywhere Crush three pieces oF 1/32 sheet against hard surface curl lengthwise about 10-in radius Apply contact cement such Weldwood inside curled pieces plug Apply crossgrain first layer 52 Model Aviation Most conspicuous aerodynamic feature dive-brake flaps enable model maintain 25-mph straight-down attitude escape booming thermals make quick changes approach minimum sink fast descent illustrated picture molded fuselageby laminations different grain directionsia strongest author has seen including fiberglass shown wing cut-Out radio installation hatch removed balanced hinging flaps also apparent using ammonia beginning middle radio area working toward end Alternate end joints ter minate wrap joints should alternated along side coinci dent joints avoided layer complete sand give good hard rolling Apply contact cement plug three pieces 1/16 X 3 X 36 soft balsa about 05 oz two pieces used sides should have end cut off diagonally joint area nose will match first layer joint plywood doubler would correct type weakness Complete layer similar manner first longitudinal seams first third layers must coincide second layer obvious reasons Any two first third layer butt-joints seams coincide will weaken structure permissible have longitudinal seams first third coincide least harmful seams tight balsa has dried make cuts along desired outline canopy fuselage remove Make long cut bottom fuse lage about 10 long toward tail nose Carefully slide fuselage rear ward off plug masking tape easily twisted out tail cone piece 3/16 iano wire having fork cut end Dremmel carborundum cutter center panels wing two polyhedral tips begun pinning down 4 x 32 hard balsa spar-plate gluing soft balsa ribs install ing 8 spars spruce center section hard balsa tips Hot Stuff vertical grain soft balsa webbing trailing edge should glued place good white glue such Wilhold trailing edge left out flaps will go two top bottom 1/16 hard strips extending outward center wing just forward flap remaining bottom sheeting now glued place Hot Stuff Dont forget epoxy 1/16 ply screw plates onto spar plate under forward end two center wing ribs After applying another liberal coat white glue vertical grain spar web bing fit install top leading-edge sheeting leading edge holes flap torque rod cut /8 ID brass tubing slotted end 1/8 aluminum welding rod flattened drilled end / 16 iron weld ing rod flap pushrod inserted center section bend made soft aluminum torque rod after inserted Roughen I-in long brass bushings file slip position over torque rod epoxy place bent end torque rod should just clear Monokote wing covered bottom sheeting wing cut out allow final bending movement inboard flap torque rod center sections wing joined stall flap pushrod tape forward position remove tape before covering wing other desirable flight characteristics result fairly standard design fea tures Callisto easiest ship build perfection never easily achieved would encouraging new designer say Callisto begun day seven character istics mind wasnt ship evolved over period two half years going through four major prototypes 10 different sailplanes small improvements followed important design changes ship would too lengthy describe changes reasoning behind should sufficient say practical reason shape feature Callisto Although room improve ment am still work de sign represents successful stopping point worthy try soaring enthusiasts period development occurred tween numerous contests held Hous ton Dallas Fort Worth Waco probable contests Callisto would exist would still flying first effort modeler can see things friendly gatherings will open eyes new horizons al ways true case fortunate new prototype successful its predecessor fact Callisto seldom came home contest March1976 53 benefits molded constructionin addition great strengthis thin wall thick ness permits slimmer fuselage Callisto some brass often first place Just dont get idea pilot does winning Callisto loaned friend owned radio four months flew third fourth contests placed second third contest walked off third fourth places against some best pilots Texas fourth contest after two hours practice about eight flights During practice session able verify last two spot landing requirements LSF Level comment easy fly has no bad habits three aspects Callisto design will problem possibly deterrent average builder order difficulty molded balsa ply fuselage flaps associated controls full flying stab Hopefully fol lowing construction notes will simplify some problems molded fuselage made rough ly shaped wooden plug described RCM July 1971 Dont weaken finished first plug about three hours using borrowed band saw l 10 carpenters plane Obtain 40 4 X 4 white pine redwood two 2 ued together may used drill closely possible parallel hole end Glue 10 long 1/2 diameter iron rods holes Make stand-offs 2 X 4 scraps plug blank about 10 above work bench clamped down scissor clamp end rods necessity prevent plug turning working plane coarse sandpaper exact shape plug critical long nose long enough make lead ballast unneces sary radio compartment large enough radio common errors making tail cone too large should about pending too much time making smooth symme trical shape plug sure make about / 16 smaller inside dimensions fuselage allow masking tape Saran Wrap goes first After Saran Wrap start tail covering fuselage masking tape wrapping sticky side out holds first layer balsa plug Stick piece 1/32 X 3 X 36 soft balsa about 04 oz along side plug Add ammonia water sponge using smooth 1 pipe roll balsa down plug longitudinal grain balsa tail cone must have breaks joints can add piece area nose complete side piece since joint will strengthened 1/32 plywood doubler epoxy center panels wing sanded good fit proper dihedral angle plywood dihedral brace slots made fine-tooth hand saw two hacksaw blades clamped together di hedral braces tack-glued place Hot Stuff microballoons maintain proper dihedral two three liberal coats Formula II Hobbypoxy applied first coat heat gun allow better penetration balsa last coat microballoons complete filling polyhedral tip support pins tubing epoxied place before braces sheeting polyhedral joint ribs installed wire pins should bent dihedral rather angled down wing tip remaining straight proper polyhedral angle obtained Finish closing flap opening wing indicated Fit tape top bottom flap place glue together rear convolution cut slots wing flap lap hinges glue place Hot Stuff Re move hinge pins tape flap portion hinge will keep flap spaced properly balsa fill epox ied place end forward opening flaps U-shaped wire brass tubing end flap pushrod installed after wing covered position U-shaped wire critical governs amount flap travel may have repositioned obtain desired 600 travel Dont worry about force required position flaps cause aerodynamically balanced due hinge position Cut 12 X 1 opening fuselage around wing saddle will formed Contact glue 1/32 plywood fuselage doublers inside radio com partment rear wing saddle doublers inside fuselage Good contact glue joints important because hard wood wing mount blocks will epoxied nose block tail cone epoxied place Note tail cone protrudes molded fuselage about /8 vertical stab sandwich construc ted stabilator hinge wire epoxied soldered place Better alignment visual can achieved wing fitted fuselage bolted place before stab assembly epoxied place stabilator control horn made DuBro aileron bellcrank associated snap-link pushrod must place stab epoxied tail cone slot right because difficult remove afterward changes Close-up flap torque rod before bending runs through brass tubular bearing transmitter left hand Rimmer launches Callisto 60-degree angle 1—RNRR0/ASS CLOTH ARE EPOXY COAT 0/ER CENTER SECTEINp3/325M SOFT FLL N IJiL SF51 RAAEL 2FATLL SCREW U 1r II -RI Ply 3/3SH MED TOP AND BORIIEIE /E SCEEWSt3IIX SD E VIED RE/ES TURNG-UOLDER FOR ADUJSTMENT VIE STL WELDED ROD [Y/LLDIED NOR[SPAN 1NALSENISAlMx,sUmEE ALL AIRS 302 SOFT L3/32SH-MEU WEB WERHEAL 0/A N-DJLALF DIE USED UAL,OW k3/32oUSSE1-S ALL ROTEDA SPEEDED IS 3/3D 11 K lIE ID RE/ES TARSO ROTE DO SOT SEW I/S WIRESEE -OLES IN WT 2/ETI &U2 ALL TOP 5-FETING STE E/EIDrJ TURING 3/32 SH TOP &SOTT0/1 ROHOAL FLARSAP PLUAOOR FLAP SINGE DETAILS WIND DIHEDRAL MAXIMUM COETHOF VIcE/EMEND AT TRAIL ND EDRES STARLADOR UP TO SOWN 3 RLHLEFT DO ROST 15 ARE ___QQOQO-O 1/A WIHEASS2IHI/A HALSA 2ND ERDUPSPAS322 IN PLACETP RU ERETANER -SEE 0/TELPIANO _____________1/64 FLUTUE WIRESNASS DSC SODEREDWEE 134561/16 IDNEASS TASIND UTOT FOR STAR _________OMIT SALSA THIS AREA — -------- Kr -iiIIIISTARILATOR DREERAL II II5II IilI III IIII I-IF- -1 II IIII -IL II P HWND SECCON AT FLAP PUSH ROD 2-SE 500 & NATWEARING HEEL POUTEUCRYT AS NOTED MODIFIED Efl AILERON F-----I----25 0/ILL 53D TAPSE/CRAMS AND METAL E-Z LINE UERTICAL STAN TEMPLATE ND PARTS ARMY3/IN TRICK RE ANREARRE SO SEAj C/G SHORT HORN & NI/AR 0141 CALLISTO STANDARD CLASS SAILPLANE 1/32 PLY\ECYLXIARES 2 SEOD SPARS BE NARSINIS BY JOHN JUMMER 1/4 piMp 2 MAPLE 0 4 11 31 stabilators constructed correctly 1/16 wire goes through slot belicrank should have maximum travel stop nothing un usual about rest empennage con struction use light medium balsa Hot Stuff throughout except 1/64 plywood top bottom stabila tor root epoxied canopy made molded piece cut away fuselage removed plug inside fuselage coat ed Hobbypoxy Formula II back area towhook additional strength withstand hard landing occasion winch line has broken about 30 ft Callisto did whipstall followed straight down crash no damage except pride structure complete fuse lage covered Super Monokote rest covered Seal-lamin Lamco laminating mylar one-ounce fivedollar saving works just like Monokote considering is about 30% thinner pigment Look office sup ply stores couldnt build large wing sailplanes covering Super Monokote strips used polyhedral joints visibility resist ance tearing tape applied re moved rudder installed large DuBro hinges after covering radio installation straight forward servo position allows easy access important note flap servo arm longest available points almost straight rear line flap pushrod flaps up posi tion puts maximum force flaps tight closure least likely stall servo little force servo during after flap deployment try get least 600 travel greater amount continued page 78 56 Model Aviation Wrapping masking tape plugsticky side Outin preparation laying balsa Second layer sheet wrapping complete end joints staggered dont show inira iayer sneering going Note diagonal cut joint side radio compartment Another view step shown above Mold covered Saran Wrap before taping First layer 1/32 sheet being wrapped procedure outlined detail article Authors balsa crusher rolling Article describes rolling 1 rod formica Second layer balsa sheeting being wrapped Core its holder described text Third layer sheeting laying below work took designer three hours make plug ribs after block sanding Rib stacking familiar practice process scary Exhaust Extension Perfect scale other applications extension needed no muffler required unit has machined locating slot fit engines no adaptors needed Extension 2% long comes complete mounting hardware Three sizes small 15 25 engines medium 29 40 large 49 80 $450 Manifolds available two styles will work boats cars airplanes Both come three sizes small 15-25 engines medium 29-40 large 45-80 have un iversal mounting slot eliminate need adaptor Suggested retail price $495 Throttle engine exhaust type throttle system comes three standard sizes Small 15-25 engines Medium 2940 Large 45-80 mounting slot el iminates need adaptors $695 special model exhaust throttle made OPS 40 60 engines using tuned pipe $1495 shown 300cc fuel tank especially designed boating use gravity feed type fuel pickup located bottom tank Molded extremely fuel resistant plastic tank features twist top fast fueling Suggested retail price $225 Semco makes 280 accesso ries models Send 25 catalog of mufflers tools hardware accessories available Semco Gee Bee/Haffke continued naoe 9 fairing stacked parts should weigh ted glue dries thoroughly dry halves may dowled align ment may tack glued carving shape finished two halves sandwiched over wire secured together short sheet-metal screws Engine Cowl Cowl rings cowl mount cut various sizes shown plans a /8 ply rings glued together a ring 1/8 ply mount Space 3 apart plank 3/16 strips sheet may used wetting help curvature prefer Cowl carved sanded shape thoroughly dry 18 cowl bumps carved scrap balsa cemented place After cowl finished may fitted firewall retained three short sheet-metal screws Mine need ed small hole glow plug used exhaust extension out bottom cowl can make available molded plastic cowl wheel fairings anyone wishing avoid building parts may inquire about parts writing Aero Classics PO Box 2156S Vineland NJ 08360 desire build model Maude Taits NR-l 1049 cowling may formed using large coffee can other appropriate size cylinder wrap around can 2/2strip 1/16 ply second layer 1/16 ply wrapped over first joints staggered layers balsa may added build up proper thickness dry carved sanded shape Maude Taits aircraft standard windshield two-seat version used simple tail skid place faired tail wheel Finishing model up individ ual much has written covered structure Silkspan finished Super Monokote model very strong light Mine weighed just over 5 lbs ready fly may add whatever small details wish such wing tail struts flying wires give real character model first model flew beautifully its very first flight Right rudder needed takeoff once air flew hands off just little trim adjustment proved very stable gentle very positive controls model difficult build structure very strong light finished external bracing wires very attractive ship Data Sources Racing Planes Guide Joe Christy 62 Rare Racing Planes Maj Truman Weaver Call Mr Airshow Bill Sweet NationalAir Racers 3 Views Charles Mendenhall Gee Bee Racers Profile Publication #51 Pete Bowers Model Aircraft Aug 1957 American Modeler July 1958 Callisto/R im mer rnntin,4 paqe 56 say 900 doesnt improve effectiveness very much first flight rudder should have about 200 movement side cen ter stabilator should least 15 up 15 down stabilator should about 3/16 up rear trim neutral sight along bottom wing gentle hand glide should give slow stable descent no tendency nose up stall Have radio onyou wouldnt want Callisto lost now first launch either winch high-start should made initially inclined up about 30 Later near vertical heave can tried using about 15 pounds tension Watch tip sections wing flex indication proper tension center section does bend CG tow-hook positions correct no warps ship should climb out slight up elevator full up trim Change trim back neutral just fore release heading begins weave uncertainly trim nose down slightly Try flaps altitude first can safely get familiar rapid loss forward speed resulting trim change change trim does occur immedi ately two seconds after flaps full down Since arent used speed decreasing nose down flaps can deceiving first during ap proach landing After have some confidence flying ship lower flaps push nose over vertical dive get ready biggest thrills Dont forget moving about 25mph 2200 ft/mm 37 ft/sec straight down Its easy miscalculate perform ultimate structural test Due low drag can dip nose pick up speed level out achieve sustained penetration unbelieveable ship such low wing loading Most standard ships would have weigh twice much Callisto have same penetrating ability much greater sink rate problem faster speed controls much sensitive dont slow down excessive control movement Smoothness way achieve maximum pos sible efficiency adjust Callisto approximately neutral pitch stability Pos itive stability can achieved nose ballast stabilator drag higher wing loading result Callisto once made seven minute hands off flight during required fun fly event flight would have much longer controlled flight allowed could go seemingly indefinitely about Callisto after few flights will Good luck PROTECT YOUR RIGI4TTO FLY Safe Flying No Accident 78 Model Aviation Exhaust Manifolds Exhaust Throttle tioat I-uel lank
Edition: Model Aviation - 1976/03
Page Numbers: 52, 53, 54, 55, 56, 78
G\LLISIO John Rimmer GREEK MYTHOLOGY tells us Callisto beautiful nymph loved Zeus Ruler Heavens placed sky constellation Ursa Major Latin meaning word beauti ful Callisto can poetically termed beautiful heavenly lady believe will find fune tionallv sound aesthetically pleas ing tothe eye raving judge fact fiction average sailplane enthusiast ~ould have no trouble listing important characteristics expected perfect sailplane would Steep climb very high launch altitude practically first place Nats other wins under its belt Standard Class sailplane has special design features give extraordinary performance hands off no tip stall 2 Very low wing loading around 5 oz/ft minimum sink rate 3 Good L/D penetration 4 safe vertical dive ability escape booming thermal lose altitude quick ly two-minute 10-minute precision flight 5 Stable flat turn characteristics thermal work 6 Easily controlled reasonably slox4 precise landing approach 7 A fairly sturdy airframe withstand wrath Earth gods tempted unsuspecting sailplane pilot having mental lapse Callisto gets excellent marks points 12 chord wing having 6% airfoil produces steep climb very good penetration low wingloading use dive-brake-type flaps maintains about 25 mph speed vertical dive also enable pilot quickly change minimum sink fast descent landing approach molded balsa ply fuselage strongest lightest struc ture have found date includes epoxy glass types Make longitudinal seam between two side pieces top bottom try wrap side piece around tail cone because \ill cause severe warp fuselage removed same other side will have make 1 diagonal cut belly just aft tow-hook position frac tures due compound curve avoided Completely cover rest plug similar fashion ie cutting roll ing piecing second fuselage much easier now takes about two hours complete Sand down rough edges make sure no voids balsa adhering plug everywhere Crush three pieces oF 1/32 sheet against hard surface curl lengthwise about 10-in radius Apply contact cement such Weldwood inside curled pieces plug Apply crossgrain first layer 52 Model Aviation Most conspicuous aerodynamic feature dive-brake flaps enable model maintain 25-mph straight-down attitude escape booming thermals make quick changes approach minimum sink fast descent illustrated picture molded fuselageby laminations different grain directionsia strongest author has seen including fiberglass shown wing cut-Out radio installation hatch removed balanced hinging flaps also apparent using ammonia beginning middle radio area working toward end Alternate end joints ter minate wrap joints should alternated along side coinci dent joints avoided layer complete sand give good hard rolling Apply contact cement plug three pieces 1/16 X 3 X 36 soft balsa about 05 oz two pieces used sides should have end cut off diagonally joint area nose will match first layer joint plywood doubler would correct type weakness Complete layer similar manner first longitudinal seams first third layers must coincide second layer obvious reasons Any two first third layer butt-joints seams coincide will weaken structure permissible have longitudinal seams first third coincide least harmful seams tight balsa has dried make cuts along desired outline canopy fuselage remove Make long cut bottom fuse lage about 10 long toward tail nose Carefully slide fuselage rear ward off plug masking tape easily twisted out tail cone piece 3/16 iano wire having fork cut end Dremmel carborundum cutter center panels wing two polyhedral tips begun pinning down 4 x 32 hard balsa spar-plate gluing soft balsa ribs install ing 8 spars spruce center section hard balsa tips Hot Stuff vertical grain soft balsa webbing trailing edge should glued place good white glue such Wilhold trailing edge left out flaps will go two top bottom 1/16 hard strips extending outward center wing just forward flap remaining bottom sheeting now glued place Hot Stuff Dont forget epoxy 1/16 ply screw plates onto spar plate under forward end two center wing ribs After applying another liberal coat white glue vertical grain spar web bing fit install top leading-edge sheeting leading edge holes flap torque rod cut /8 ID brass tubing slotted end 1/8 aluminum welding rod flattened drilled end / 16 iron weld ing rod flap pushrod inserted center section bend made soft aluminum torque rod after inserted Roughen I-in long brass bushings file slip position over torque rod epoxy place bent end torque rod should just clear Monokote wing covered bottom sheeting wing cut out allow final bending movement inboard flap torque rod center sections wing joined stall flap pushrod tape forward position remove tape before covering wing other desirable flight characteristics result fairly standard design fea tures Callisto easiest ship build perfection never easily achieved would encouraging new designer say Callisto begun day seven character istics mind wasnt ship evolved over period two half years going through four major prototypes 10 different sailplanes small improvements followed important design changes ship would too lengthy describe changes reasoning behind should sufficient say practical reason shape feature Callisto Although room improve ment am still work de sign represents successful stopping point worthy try soaring enthusiasts period development occurred tween numerous contests held Hous ton Dallas Fort Worth Waco probable contests Callisto would exist would still flying first effort modeler can see things friendly gatherings will open eyes new horizons al ways true case fortunate new prototype successful its predecessor fact Callisto seldom came home contest March1976 53 benefits molded constructionin addition great strengthis thin wall thick ness permits slimmer fuselage Callisto some brass often first place Just dont get idea pilot does winning Callisto loaned friend owned radio four months flew third fourth contests placed second third contest walked off third fourth places against some best pilots Texas fourth contest after two hours practice about eight flights During practice session able verify last two spot landing requirements LSF Level comment easy fly has no bad habits three aspects Callisto design will problem possibly deterrent average builder order difficulty molded balsa ply fuselage flaps associated controls full flying stab Hopefully fol lowing construction notes will simplify some problems molded fuselage made rough ly shaped wooden plug described RCM July 1971 Dont weaken finished first plug about three hours using borrowed band saw l 10 carpenters plane Obtain 40 4 X 4 white pine redwood two 2 ued together may used drill closely possible parallel hole end Glue 10 long 1/2 diameter iron rods holes Make stand-offs 2 X 4 scraps plug blank about 10 above work bench clamped down scissor clamp end rods necessity prevent plug turning working plane coarse sandpaper exact shape plug critical long nose long enough make lead ballast unneces sary radio compartment large enough radio common errors making tail cone too large should about pending too much time making smooth symme trical shape plug sure make about / 16 smaller inside dimensions fuselage allow masking tape Saran Wrap goes first After Saran Wrap start tail covering fuselage masking tape wrapping sticky side out holds first layer balsa plug Stick piece 1/32 X 3 X 36 soft balsa about 04 oz along side plug Add ammonia water sponge using smooth 1 pipe roll balsa down plug longitudinal grain balsa tail cone must have breaks joints can add piece area nose complete side piece since joint will strengthened 1/32 plywood doubler epoxy center panels wing sanded good fit proper dihedral angle plywood dihedral brace slots made fine-tooth hand saw two hacksaw blades clamped together di hedral braces tack-glued place Hot Stuff microballoons maintain proper dihedral two three liberal coats Formula II Hobbypoxy applied first coat heat gun allow better penetration balsa last coat microballoons complete filling polyhedral tip support pins tubing epoxied place before braces sheeting polyhedral joint ribs installed wire pins should bent dihedral rather angled down wing tip remaining straight proper polyhedral angle obtained Finish closing flap opening wing indicated Fit tape top bottom flap place glue together rear convolution cut slots wing flap lap hinges glue place Hot Stuff Re move hinge pins tape flap portion hinge will keep flap spaced properly balsa fill epox ied place end forward opening flaps U-shaped wire brass tubing end flap pushrod installed after wing covered position U-shaped wire critical governs amount flap travel may have repositioned obtain desired 600 travel Dont worry about force required position flaps cause aerodynamically balanced due hinge position Cut 12 X 1 opening fuselage around wing saddle will formed Contact glue 1/32 plywood fuselage doublers inside radio com partment rear wing saddle doublers inside fuselage Good contact glue joints important because hard wood wing mount blocks will epoxied nose block tail cone epoxied place Note tail cone protrudes molded fuselage about /8 vertical stab sandwich construc ted stabilator hinge wire epoxied soldered place Better alignment visual can achieved wing fitted fuselage bolted place before stab assembly epoxied place stabilator control horn made DuBro aileron bellcrank associated snap-link pushrod must place stab epoxied tail cone slot right because difficult remove afterward changes Close-up flap torque rod before bending runs through brass tubular bearing transmitter left hand Rimmer launches Callisto 60-degree angle 1—RNRR0/ASS CLOTH ARE EPOXY COAT 0/ER CENTER SECTEINp3/325M SOFT FLL N IJiL SF51 RAAEL 2FATLL SCREW U 1r II -RI Ply 3/3SH MED TOP AND BORIIEIE /E SCEEWSt3IIX SD E VIED RE/ES TURNG-UOLDER FOR ADUJSTMENT VIE STL WELDED ROD [Y/LLDIED NOR[SPAN 1NALSENISAlMx,sUmEE ALL AIRS 302 SOFT L3/32SH-MEU WEB WERHEAL 0/A N-DJLALF DIE USED UAL,OW k3/32oUSSE1-S ALL ROTEDA SPEEDED IS 3/3D 11 K lIE ID RE/ES TARSO ROTE DO SOT SEW I/S WIRESEE -OLES IN WT 2/ETI &U2 ALL TOP 5-FETING STE E/EIDrJ TURING 3/32 SH TOP &SOTT0/1 ROHOAL FLARSAP PLUAOOR FLAP SINGE DETAILS WIND DIHEDRAL MAXIMUM COETHOF VIcE/EMEND AT TRAIL ND EDRES STARLADOR UP TO SOWN 3 RLHLEFT DO ROST 15 ARE ___QQOQO-O 1/A WIHEASS2IHI/A HALSA 2ND ERDUPSPAS322 IN PLACETP RU ERETANER -SEE 0/TELPIANO _____________1/64 FLUTUE WIRESNASS DSC SODEREDWEE 134561/16 IDNEASS TASIND UTOT FOR STAR _________OMIT SALSA THIS AREA — -------- Kr -iiIIIISTARILATOR DREERAL II II5II IilI III IIII I-IF- -1 II IIII -IL II P HWND SECCON AT FLAP PUSH ROD 2-SE 500 & NATWEARING HEEL POUTEUCRYT AS NOTED MODIFIED Efl AILERON F-----I----25 0/ILL 53D TAPSE/CRAMS AND METAL E-Z LINE UERTICAL STAN TEMPLATE ND PARTS ARMY3/IN TRICK RE ANREARRE SO SEAj C/G SHORT HORN & NI/AR 0141 CALLISTO STANDARD CLASS SAILPLANE 1/32 PLY\ECYLXIARES 2 SEOD SPARS BE NARSINIS BY JOHN JUMMER 1/4 piMp 2 MAPLE 0 4 11 31 stabilators constructed correctly 1/16 wire goes through slot belicrank should have maximum travel stop nothing un usual about rest empennage con struction use light medium balsa Hot Stuff throughout except 1/64 plywood top bottom stabila tor root epoxied canopy made molded piece cut away fuselage removed plug inside fuselage coat ed Hobbypoxy Formula II back area towhook additional strength withstand hard landing occasion winch line has broken about 30 ft Callisto did whipstall followed straight down crash no damage except pride structure complete fuse lage covered Super Monokote rest covered Seal-lamin Lamco laminating mylar one-ounce fivedollar saving works just like Monokote considering is about 30% thinner pigment Look office sup ply stores couldnt build large wing sailplanes covering Super Monokote strips used polyhedral joints visibility resist ance tearing tape applied re moved rudder installed large DuBro hinges after covering radio installation straight forward servo position allows easy access important note flap servo arm longest available points almost straight rear line flap pushrod flaps up posi tion puts maximum force flaps tight closure least likely stall servo little force servo during after flap deployment try get least 600 travel greater amount continued page 78 56 Model Aviation Wrapping masking tape plugsticky side Outin preparation laying balsa Second layer sheet wrapping complete end joints staggered dont show inira iayer sneering going Note diagonal cut joint side radio compartment Another view step shown above Mold covered Saran Wrap before taping First layer 1/32 sheet being wrapped procedure outlined detail article Authors balsa crusher rolling Article describes rolling 1 rod formica Second layer balsa sheeting being wrapped Core its holder described text Third layer sheeting laying below work took designer three hours make plug ribs after block sanding Rib stacking familiar practice process scary Exhaust Extension Perfect scale other applications extension needed no muffler required unit has machined locating slot fit engines no adaptors needed Extension 2% long comes complete mounting hardware Three sizes small 15 25 engines medium 29 40 large 49 80 $450 Manifolds available two styles will work boats cars airplanes Both come three sizes small 15-25 engines medium 29-40 large 45-80 have un iversal mounting slot eliminate need adaptor Suggested retail price $495 Throttle engine exhaust type throttle system comes three standard sizes Small 15-25 engines Medium 2940 Large 45-80 mounting slot el iminates need adaptors $695 special model exhaust throttle made OPS 40 60 engines using tuned pipe $1495 shown 300cc fuel tank especially designed boating use gravity feed type fuel pickup located bottom tank Molded extremely fuel resistant plastic tank features twist top fast fueling Suggested retail price $225 Semco makes 280 accesso ries models Send 25 catalog of mufflers tools hardware accessories available Semco Gee Bee/Haffke continued naoe 9 fairing stacked parts should weigh ted glue dries thoroughly dry halves may dowled align ment may tack glued carving shape finished two halves sandwiched over wire secured together short sheet-metal screws Engine Cowl Cowl rings cowl mount cut various sizes shown plans a /8 ply rings glued together a ring 1/8 ply mount Space 3 apart plank 3/16 strips sheet may used wetting help curvature prefer Cowl carved sanded shape thoroughly dry 18 cowl bumps carved scrap balsa cemented place After cowl finished may fitted firewall retained three short sheet-metal screws Mine need ed small hole glow plug used exhaust extension out bottom cowl can make available molded plastic cowl wheel fairings anyone wishing avoid building parts may inquire about parts writing Aero Classics PO Box 2156S Vineland NJ 08360 desire build model Maude Taits NR-l 1049 cowling may formed using large coffee can other appropriate size cylinder wrap around can 2/2strip 1/16 ply second layer 1/16 ply wrapped over first joints staggered layers balsa may added build up proper thickness dry carved sanded shape Maude Taits aircraft standard windshield two-seat version used simple tail skid place faired tail wheel Finishing model up individ ual much has written covered structure Silkspan finished Super Monokote model very strong light Mine weighed just over 5 lbs ready fly may add whatever small details wish such wing tail struts flying wires give real character model first model flew beautifully its very first flight Right rudder needed takeoff once air flew hands off just little trim adjustment proved very stable gentle very positive controls model difficult build structure very strong light finished external bracing wires very attractive ship Data Sources Racing Planes Guide Joe Christy 62 Rare Racing Planes Maj Truman Weaver Call Mr Airshow Bill Sweet NationalAir Racers 3 Views Charles Mendenhall Gee Bee Racers Profile Publication #51 Pete Bowers Model Aircraft Aug 1957 American Modeler July 1958 Callisto/R im mer rnntin,4 paqe 56 say 900 doesnt improve effectiveness very much first flight rudder should have about 200 movement side cen ter stabilator should least 15 up 15 down stabilator should about 3/16 up rear trim neutral sight along bottom wing gentle hand glide should give slow stable descent no tendency nose up stall Have radio onyou wouldnt want Callisto lost now first launch either winch high-start should made initially inclined up about 30 Later near vertical heave can tried using about 15 pounds tension Watch tip sections wing flex indication proper tension center section does bend CG tow-hook positions correct no warps ship should climb out slight up elevator full up trim Change trim back neutral just fore release heading begins weave uncertainly trim nose down slightly Try flaps altitude first can safely get familiar rapid loss forward speed resulting trim change change trim does occur immedi ately two seconds after flaps full down Since arent used speed decreasing nose down flaps can deceiving first during ap proach landing After have some confidence flying ship lower flaps push nose over vertical dive get ready biggest thrills Dont forget moving about 25mph 2200 ft/mm 37 ft/sec straight down Its easy miscalculate perform ultimate structural test Due low drag can dip nose pick up speed level out achieve sustained penetration unbelieveable ship such low wing loading Most standard ships would have weigh twice much Callisto have same penetrating ability much greater sink rate problem faster speed controls much sensitive dont slow down excessive control movement Smoothness way achieve maximum pos sible efficiency adjust Callisto approximately neutral pitch stability Pos itive stability can achieved nose ballast stabilator drag higher wing loading result Callisto once made seven minute hands off flight during required fun fly event flight would have much longer controlled flight allowed could go seemingly indefinitely about Callisto after few flights will Good luck PROTECT YOUR RIGI4TTO FLY Safe Flying No Accident 78 Model Aviation Exhaust Manifolds Exhaust Throttle tioat I-uel lank
Edition: Model Aviation - 1976/03
Page Numbers: 52, 53, 54, 55, 56, 78
G\LLISIO John Rimmer GREEK MYTHOLOGY tells us Callisto beautiful nymph loved Zeus Ruler Heavens placed sky constellation Ursa Major Latin meaning word beauti ful Callisto can poetically termed beautiful heavenly lady believe will find fune tionallv sound aesthetically pleas ing tothe eye raving judge fact fiction average sailplane enthusiast ~ould have no trouble listing important characteristics expected perfect sailplane would Steep climb very high launch altitude practically first place Nats other wins under its belt Standard Class sailplane has special design features give extraordinary performance hands off no tip stall 2 Very low wing loading around 5 oz/ft minimum sink rate 3 Good L/D penetration 4 safe vertical dive ability escape booming thermal lose altitude quick ly two-minute 10-minute precision flight 5 Stable flat turn characteristics thermal work 6 Easily controlled reasonably slox4 precise landing approach 7 A fairly sturdy airframe withstand wrath Earth gods tempted unsuspecting sailplane pilot having mental lapse Callisto gets excellent marks points 12 chord wing having 6% airfoil produces steep climb very good penetration low wingloading use dive-brake-type flaps maintains about 25 mph speed vertical dive also enable pilot quickly change minimum sink fast descent landing approach molded balsa ply fuselage strongest lightest struc ture have found date includes epoxy glass types Make longitudinal seam between two side pieces top bottom try wrap side piece around tail cone because \ill cause severe warp fuselage removed same other side will have make 1 diagonal cut belly just aft tow-hook position frac tures due compound curve avoided Completely cover rest plug similar fashion ie cutting roll ing piecing second fuselage much easier now takes about two hours complete Sand down rough edges make sure no voids balsa adhering plug everywhere Crush three pieces oF 1/32 sheet against hard surface curl lengthwise about 10-in radius Apply contact cement such Weldwood inside curled pieces plug Apply crossgrain first layer 52 Model Aviation Most conspicuous aerodynamic feature dive-brake flaps enable model maintain 25-mph straight-down attitude escape booming thermals make quick changes approach minimum sink fast descent illustrated picture molded fuselageby laminations different grain directionsia strongest author has seen including fiberglass shown wing cut-Out radio installation hatch removed balanced hinging flaps also apparent using ammonia beginning middle radio area working toward end Alternate end joints ter minate wrap joints should alternated along side coinci dent joints avoided layer complete sand give good hard rolling Apply contact cement plug three pieces 1/16 X 3 X 36 soft balsa about 05 oz two pieces used sides should have end cut off diagonally joint area nose will match first layer joint plywood doubler would correct type weakness Complete layer similar manner first longitudinal seams first third layers must coincide second layer obvious reasons Any two first third layer butt-joints seams coincide will weaken structure permissible have longitudinal seams first third coincide least harmful seams tight balsa has dried make cuts along desired outline canopy fuselage remove Make long cut bottom fuse lage about 10 long toward tail nose Carefully slide fuselage rear ward off plug masking tape easily twisted out tail cone piece 3/16 iano wire having fork cut end Dremmel carborundum cutter center panels wing two polyhedral tips begun pinning down 4 x 32 hard balsa spar-plate gluing soft balsa ribs install ing 8 spars spruce center section hard balsa tips Hot Stuff vertical grain soft balsa webbing trailing edge should glued place good white glue such Wilhold trailing edge left out flaps will go two top bottom 1/16 hard strips extending outward center wing just forward flap remaining bottom sheeting now glued place Hot Stuff Dont forget epoxy 1/16 ply screw plates onto spar plate under forward end two center wing ribs After applying another liberal coat white glue vertical grain spar web bing fit install top leading-edge sheeting leading edge holes flap torque rod cut /8 ID brass tubing slotted end 1/8 aluminum welding rod flattened drilled end / 16 iron weld ing rod flap pushrod inserted center section bend made soft aluminum torque rod after inserted Roughen I-in long brass bushings file slip position over torque rod epoxy place bent end torque rod should just clear Monokote wing covered bottom sheeting wing cut out allow final bending movement inboard flap torque rod center sections wing joined stall flap pushrod tape forward position remove tape before covering wing other desirable flight characteristics result fairly standard design fea tures Callisto easiest ship build perfection never easily achieved would encouraging new designer say Callisto begun day seven character istics mind wasnt ship evolved over period two half years going through four major prototypes 10 different sailplanes small improvements followed important design changes ship would too lengthy describe changes reasoning behind should sufficient say practical reason shape feature Callisto Although room improve ment am still work de sign represents successful stopping point worthy try soaring enthusiasts period development occurred tween numerous contests held Hous ton Dallas Fort Worth Waco probable contests Callisto would exist would still flying first effort modeler can see things friendly gatherings will open eyes new horizons al ways true case fortunate new prototype successful its predecessor fact Callisto seldom came home contest March1976 53 benefits molded constructionin addition great strengthis thin wall thick ness permits slimmer fuselage Callisto some brass often first place Just dont get idea pilot does winning Callisto loaned friend owned radio four months flew third fourth contests placed second third contest walked off third fourth places against some best pilots Texas fourth contest after two hours practice about eight flights During practice session able verify last two spot landing requirements LSF Level comment easy fly has no bad habits three aspects Callisto design will problem possibly deterrent average builder order difficulty molded balsa ply fuselage flaps associated controls full flying stab Hopefully fol lowing construction notes will simplify some problems molded fuselage made rough ly shaped wooden plug described RCM July 1971 Dont weaken finished first plug about three hours using borrowed band saw l 10 carpenters plane Obtain 40 4 X 4 white pine redwood two 2 ued together may used drill closely possible parallel hole end Glue 10 long 1/2 diameter iron rods holes Make stand-offs 2 X 4 scraps plug blank about 10 above work bench clamped down scissor clamp end rods necessity prevent plug turning working plane coarse sandpaper exact shape plug critical long nose long enough make lead ballast unneces sary radio compartment large enough radio common errors making tail cone too large should about pending too much time making smooth symme trical shape plug sure make about / 16 smaller inside dimensions fuselage allow masking tape Saran Wrap goes first After Saran Wrap start tail covering fuselage masking tape wrapping sticky side out holds first layer balsa plug Stick piece 1/32 X 3 X 36 soft balsa about 04 oz along side plug Add ammonia water sponge using smooth 1 pipe roll balsa down plug longitudinal grain balsa tail cone must have breaks joints can add piece area nose complete side piece since joint will strengthened 1/32 plywood doubler epoxy center panels wing sanded good fit proper dihedral angle plywood dihedral brace slots made fine-tooth hand saw two hacksaw blades clamped together di hedral braces tack-glued place Hot Stuff microballoons maintain proper dihedral two three liberal coats Formula II Hobbypoxy applied first coat heat gun allow better penetration balsa last coat microballoons complete filling polyhedral tip support pins tubing epoxied place before braces sheeting polyhedral joint ribs installed wire pins should bent dihedral rather angled down wing tip remaining straight proper polyhedral angle obtained Finish closing flap opening wing indicated Fit tape top bottom flap place glue together rear convolution cut slots wing flap lap hinges glue place Hot Stuff Re move hinge pins tape flap portion hinge will keep flap spaced properly balsa fill epox ied place end forward opening flaps U-shaped wire brass tubing end flap pushrod installed after wing covered position U-shaped wire critical governs amount flap travel may have repositioned obtain desired 600 travel Dont worry about force required position flaps cause aerodynamically balanced due hinge position Cut 12 X 1 opening fuselage around wing saddle will formed Contact glue 1/32 plywood fuselage doublers inside radio com partment rear wing saddle doublers inside fuselage Good contact glue joints important because hard wood wing mount blocks will epoxied nose block tail cone epoxied place Note tail cone protrudes molded fuselage about /8 vertical stab sandwich construc ted stabilator hinge wire epoxied soldered place Better alignment visual can achieved wing fitted fuselage bolted place before stab assembly epoxied place stabilator control horn made DuBro aileron bellcrank associated snap-link pushrod must place stab epoxied tail cone slot right because difficult remove afterward changes Close-up flap torque rod before bending runs through brass tubular bearing transmitter left hand Rimmer launches Callisto 60-degree angle 1—RNRR0/ASS CLOTH ARE EPOXY COAT 0/ER CENTER SECTEINp3/325M SOFT FLL N IJiL SF51 RAAEL 2FATLL SCREW U 1r II -RI Ply 3/3SH MED TOP AND BORIIEIE /E SCEEWSt3IIX SD E VIED RE/ES TURNG-UOLDER FOR ADUJSTMENT VIE STL WELDED ROD [Y/LLDIED NOR[SPAN 1NALSENISAlMx,sUmEE ALL AIRS 302 SOFT L3/32SH-MEU WEB WERHEAL 0/A N-DJLALF DIE USED UAL,OW k3/32oUSSE1-S ALL ROTEDA SPEEDED IS 3/3D 11 K lIE ID RE/ES TARSO ROTE DO SOT SEW I/S WIRESEE -OLES IN WT 2/ETI &U2 ALL TOP 5-FETING STE E/EIDrJ TURING 3/32 SH TOP &SOTT0/1 ROHOAL FLARSAP PLUAOOR FLAP SINGE DETAILS WIND DIHEDRAL MAXIMUM COETHOF VIcE/EMEND AT TRAIL ND EDRES STARLADOR UP TO SOWN 3 RLHLEFT DO ROST 15 ARE ___QQOQO-O 1/A WIHEASS2IHI/A HALSA 2ND ERDUPSPAS322 IN PLACETP RU ERETANER -SEE 0/TELPIANO _____________1/64 FLUTUE WIRESNASS DSC SODEREDWEE 134561/16 IDNEASS TASIND UTOT FOR STAR _________OMIT SALSA THIS AREA — -------- Kr -iiIIIISTARILATOR DREERAL II II5II IilI III IIII I-IF- -1 II IIII -IL II P HWND SECCON AT FLAP PUSH ROD 2-SE 500 & NATWEARING HEEL POUTEUCRYT AS NOTED MODIFIED Efl AILERON F-----I----25 0/ILL 53D TAPSE/CRAMS AND METAL E-Z LINE UERTICAL STAN TEMPLATE ND PARTS ARMY3/IN TRICK RE ANREARRE SO SEAj C/G SHORT HORN & NI/AR 0141 CALLISTO STANDARD CLASS SAILPLANE 1/32 PLY\ECYLXIARES 2 SEOD SPARS BE NARSINIS BY JOHN JUMMER 1/4 piMp 2 MAPLE 0 4 11 31 stabilators constructed correctly 1/16 wire goes through slot belicrank should have maximum travel stop nothing un usual about rest empennage con struction use light medium balsa Hot Stuff throughout except 1/64 plywood top bottom stabila tor root epoxied canopy made molded piece cut away fuselage removed plug inside fuselage coat ed Hobbypoxy Formula II back area towhook additional strength withstand hard landing occasion winch line has broken about 30 ft Callisto did whipstall followed straight down crash no damage except pride structure complete fuse lage covered Super Monokote rest covered Seal-lamin Lamco laminating mylar one-ounce fivedollar saving works just like Monokote considering is about 30% thinner pigment Look office sup ply stores couldnt build large wing sailplanes covering Super Monokote strips used polyhedral joints visibility resist ance tearing tape applied re moved rudder installed large DuBro hinges after covering radio installation straight forward servo position allows easy access important note flap servo arm longest available points almost straight rear line flap pushrod flaps up posi tion puts maximum force flaps tight closure least likely stall servo little force servo during after flap deployment try get least 600 travel greater amount continued page 78 56 Model Aviation Wrapping masking tape plugsticky side Outin preparation laying balsa Second layer sheet wrapping complete end joints staggered dont show inira iayer sneering going Note diagonal cut joint side radio compartment Another view step shown above Mold covered Saran Wrap before taping First layer 1/32 sheet being wrapped procedure outlined detail article Authors balsa crusher rolling Article describes rolling 1 rod formica Second layer balsa sheeting being wrapped Core its holder described text Third layer sheeting laying below work took designer three hours make plug ribs after block sanding Rib stacking familiar practice process scary Exhaust Extension Perfect scale other applications extension needed no muffler required unit has machined locating slot fit engines no adaptors needed Extension 2% long comes complete mounting hardware Three sizes small 15 25 engines medium 29 40 large 49 80 $450 Manifolds available two styles will work boats cars airplanes Both come three sizes small 15-25 engines medium 29-40 large 45-80 have un iversal mounting slot eliminate need adaptor Suggested retail price $495 Throttle engine exhaust type throttle system comes three standard sizes Small 15-25 engines Medium 2940 Large 45-80 mounting slot el iminates need adaptors $695 special model exhaust throttle made OPS 40 60 engines using tuned pipe $1495 shown 300cc fuel tank especially designed boating use gravity feed type fuel pickup located bottom tank Molded extremely fuel resistant plastic tank features twist top fast fueling Suggested retail price $225 Semco makes 280 accesso ries models Send 25 catalog of mufflers tools hardware accessories available Semco Gee Bee/Haffke continued naoe 9 fairing stacked parts should weigh ted glue dries thoroughly dry halves may dowled align ment may tack glued carving shape finished two halves sandwiched over wire secured together short sheet-metal screws Engine Cowl Cowl rings cowl mount cut various sizes shown plans a /8 ply rings glued together a ring 1/8 ply mount Space 3 apart plank 3/16 strips sheet may used wetting help curvature prefer Cowl carved sanded shape thoroughly dry 18 cowl bumps carved scrap balsa cemented place After cowl finished may fitted firewall retained three short sheet-metal screws Mine need ed small hole glow plug used exhaust extension out bottom cowl can make available molded plastic cowl wheel fairings anyone wishing avoid building parts may inquire about parts writing Aero Classics PO Box 2156S Vineland NJ 08360 desire build model Maude Taits NR-l 1049 cowling may formed using large coffee can other appropriate size cylinder wrap around can 2/2strip 1/16 ply second layer 1/16 ply wrapped over first joints staggered layers balsa may added build up proper thickness dry carved sanded shape Maude Taits aircraft standard windshield two-seat version used simple tail skid place faired tail wheel Finishing model up individ ual much has written covered structure Silkspan finished Super Monokote model very strong light Mine weighed just over 5 lbs ready fly may add whatever small details wish such wing tail struts flying wires give real character model first model flew beautifully its very first flight Right rudder needed takeoff once air flew hands off just little trim adjustment proved very stable gentle very positive controls model difficult build structure very strong light finished external bracing wires very attractive ship Data Sources Racing Planes Guide Joe Christy 62 Rare Racing Planes Maj Truman Weaver Call Mr Airshow Bill Sweet NationalAir Racers 3 Views Charles Mendenhall Gee Bee Racers Profile Publication #51 Pete Bowers Model Aircraft Aug 1957 American Modeler July 1958 Callisto/R im mer rnntin,4 paqe 56 say 900 doesnt improve effectiveness very much first flight rudder should have about 200 movement side cen ter stabilator should least 15 up 15 down stabilator should about 3/16 up rear trim neutral sight along bottom wing gentle hand glide should give slow stable descent no tendency nose up stall Have radio onyou wouldnt want Callisto lost now first launch either winch high-start should made initially inclined up about 30 Later near vertical heave can tried using about 15 pounds tension Watch tip sections wing flex indication proper tension center section does bend CG tow-hook positions correct no warps ship should climb out slight up elevator full up trim Change trim back neutral just fore release heading begins weave uncertainly trim nose down slightly Try flaps altitude first can safely get familiar rapid loss forward speed resulting trim change change trim does occur immedi ately two seconds after flaps full down Since arent used speed decreasing nose down flaps can deceiving first during ap proach landing After have some confidence flying ship lower flaps push nose over vertical dive get ready biggest thrills Dont forget moving about 25mph 2200 ft/mm 37 ft/sec straight down Its easy miscalculate perform ultimate structural test Due low drag can dip nose pick up speed level out achieve sustained penetration unbelieveable ship such low wing loading Most standard ships would have weigh twice much Callisto have same penetrating ability much greater sink rate problem faster speed controls much sensitive dont slow down excessive control movement Smoothness way achieve maximum pos sible efficiency adjust Callisto approximately neutral pitch stability Pos itive stability can achieved nose ballast stabilator drag higher wing loading result Callisto once made seven minute hands off flight during required fun fly event flight would have much longer controlled flight allowed could go seemingly indefinitely about Callisto after few flights will Good luck PROTECT YOUR RIGI4TTO FLY Safe Flying No Accident 78 Model Aviation Exhaust Manifolds Exhaust Throttle tioat I-uel lank