The exciting aerobatic airplane world way former National Champion Clint McHenry describes Sukhoi Su-26M McHenry compared Sukhois appearance 1937 Thompson trophy racer its sound Grumman Bearcat aerobatics world got its first look Sukhoi Hungary 1984 World Championships Soviets brought two Sukhois Hungary still relied mainly Yak 55 Two years later Soviets flew refined version Su-26M World Championships England won mens womens team titles Since time Sukhoi has become hottest plane very competitive world full-scale aerobatics Sukhoi constructed titanium alloy wing ribs main gear exhaust system Carbon fiber used main spars geared supercharged 360 HP Vedeneyev M-14 nine-cylinder radial engine performance fantastic opportunity see first two Sukhois US Oshkosh July 1989 After watching test pilot Yevgeni Frolov pit Sukhoi through wildest air show routine ever seen knew build plane Since selling price about $225000 little could afford thought model Sukhoi better suited hobby budget wanted large plane fly SuperTigre 90 engine weight 8/2-9 pounds depending what engine use prototype flew quite nicely 90 engine others have used variety engines OS 108 OS YS 120 four-strokes high power 108 120 four-strokes performance August1994 17 Closeup Russian test pilot ready another flight Canopy available Sig Manufacturing address text outstanding Whichever engine choose Sukhoi will give hours great flying CONSTRUCTION Wing Pick piece hard /s balsa cut jig Its 36 inches long tapers As /2 Pin lower 3/ square spruce spar plan Pin jig place rib 12 Pin ribs place trim necessary Pin ribs spar jig glue place Glue top spar place Add leading edge ribs Glue /s x 3/ strip trailing edge Add /32 LE sheeting rib 1 outward sheet over center area time Add /32 x 2 TE sheeting Now build other wing panel up point Cut /s slot back edge spar rib 1 will allow /s plywood dihedral brace slide through Draw 72inch line workbench guide align wing panels joining wing halves joined together upside down Lay some waxed paper center pin panels main spars exactly line Shim center section 34 inch TB rib 12 Epoxy dihedral brace securely place back main spars Glue balsa filler trailing edge Let wing dry thoroughly Epoxy /s plywood ribs lA place two ribs flush top wing rib 1 rib sets proper angle landing gear plate Epoxy landing gear plate place Take time get plate securely position important part wing stress landing gear going plate good job Drill two /8 holes front dowel plate Epoxy place add balsa ribs lB /32 bottom LB sheetingWhen dry cut opening landing gear Install landing gear four 6-32 screws blind nuts Add bottom TB sheeting Sheet top center section bottom will finished after wing fitted fuselage Attach /2 X 2 TB aileron servos paper tubes servo wires Add cap strips wingtips Sand wing set aside will need completed wing construct fuselage Tail The tail pieces constructed square balsa sheeted /16 balsa Build stab elevators fin rudder over plans used six-inch-wide As balsa sheeting using wider balsa eliminates seams Sand pieces set aside until later Fuselage The fuselage us built top bottom halves re crutch square pinned flat building board top-half fuselage formers glued Pin a spruce doublers over top view plans Add two /2 balsa formers Fl Glue F2 back Fl Use engine guide determine far back should position F3 plans show approximate position 120 four-stroke engine engine must mounted upright hardwood rails Attach F4 F5 F6 build tank compartment Add top stringer between F2 F6 Drill holes throttle pushrod remaining top formers spruce stringers between F9 Fl now glued place Make sure top stringer parallel work surface because stab sits stringers Add balsa tail posts cockpit floor top F6 F7 F8 After basic framework dry time sheet top half fuselage Using soft A2 x 4 balsa carefully sheet fuselage Make sure framework remains securely pinned workbench use aliphatic resin glue gives plenty time pin balsa sheeting top formers Lightly sand tops F9 PlO Fil Add balsa top Cut piece little oversize allow final sanding After top dry remove building board turn body over prepare build bottom half Use engine carefully measure spacing needed hardwood mounts Cut notches bottom formers F3B F5B Take time next few steps get mounts straight no side down thrust sure everything straight epoxy mounts place next steps need completed wing Take time properly aiign wing drill dowel holes F5B fuselage upside down workbench use level aiign fuselage top workbench have incidence meter step goes little easier Put wing place fuselage mark dowel locations F5B used doweling center /s doweling center metal plug has sharp point end plug fits /i hole ood front dowel plate Simply set wing saddle area 00 incidence press forward doweling center will put small mark F5B exact location holes Drill two holes F5B Remove wing 18 Model Aviation lage use long drill bit make two holes rear dowels /s plywood dihedral brace Epoxy dowels place Finish sheeting wing over landing gear plate Turn wing over add bottom center section sheeting Try wing fuselage check fit Drill holes hardwood block nylon bolts Sheet front portion fuselage same manner top Add rear bottom formers F8B F9B FlOB FliB Fl2B Add /4 stringer Plan pushrod locations before sheeting bottom section pushrods place sheet section soft 3A2 balsa Test-fit stab atop ce stringers Check level again Add plywood between stringers makes good base stab sit Drill s through plywood base dowel fin go through Add soft balsa blocks side fin sand shape wing firmly attached fuselage time build bottom belly pan removable hatch Glue H8 H6 place Set H5 front H6 place glue Add stringer between H5 H8 Cut stringer between two H6 formers remove part removable part covers landing gear Sheet section /32 balsa hatch attached wing 8-32 screw Glue hardwood block bottom wing tap screw screw enough hold hatch place Cowl Cut After fuselage has finish-sanded time cut loose top half cowl Carefully mark line front F3 cut good saw along line Cut above crutch remove top cowl Epoxy two rear cowl hold-down blocks two front -inch plywood strips place everything dry drill holes front side screws cowl arrangement has proven work very well cowl half removed Continued page 24 August1994 19 I ii 1 Type RO Sport Scale Wingspan 76 inches Engine size/type 90-108 twostroke 120 four-stroke Number channels Four Flying weight 8-9 pounds Construction Built-up Covering/finish UltraCote Tail section framework re balsa will later covered Incidence meter being used set location dowel holes F5B six-inch-wide Vie balsa avoid seams /a doweling center marks correct spot Bottom view fuselage showing hardwood engine mounts Wing center section dowels epoxied place Fuselage sanded ready cover 20 Model Aviation t bottom fuselage tank compartment dowel holes Rear fuselage formers nger Bottom belly pan removable hatch under construction Top cowl section cut away YS 120 engine shown Framed up modelready cover SUKHO1 SU-26 H MARK 8IRIAI4 M BUVPV ic GI3RICk w WcKSONTVFULLSCRLEaRNES I- CLAIMS ThIS RUSSIRN SHIP IS ONE GREAT AIRPLINEACE F T T1A POLITICIANS 3QVALE CUDTWE WIAO Ci* LOVE AND FiXAIRPLANES NAVE BJTER T14INGS TO NZiYDO.LETSIF WE CAN GETA RIDE N IT COSEE COk-Y79ErE 6 PA-L ThIE AMGAR zAT 4 SO SFRUCE IUBLER SQ L5A CRUTCIi 7 N -7N V 7 SHEI 4z B1LS SAEPNG 1vPIcL j ELS SHT RIBS 38SPaICE 5Rb roP& BOTTOM)A S4ILSR LRMINAT AE~LSfl 5HLN PL SO -~SSPRUCE ~jVV V SPECIAL IN ThREiSFiNNR. IS 3 DIfl WI4EEL5 V POUR CYCLE ON 10 WET ENGINE USE HO TWO CICLOT FUSELAGE TOP VIEW N F-SII IR BALSA SHOOT HOSE RACIC SANE SHAPE HO FA CLUE HI PLACE AFTER TOP SALT OP NISRRHISH SHEET/ k 5 OIH MAIN WHEELS 00 BALSA SHOET F-ET flASH HO SQ RALSA CASITCH PC SQ SPRUCE OSORLES AR PLVWHOB F-B B PB BALSA ____SHEETF-SF7 PR BALSA / / LON BALSA NIEET IPSEBALSACUT TO FITB COCOPIT FLOORS SHEET TELF ST/ HOUS PAT BALSA F9 ________________________ IC SQ SALSA PC RALSAFIN RUHOER H /GUSSETBALSA TIlER MEET 11CC RALSA F-s_____RALOA S SHOOTHINOP TO I/COO HOSE / FINRUDDER\ I/NSA SPESICE-.---LW HOWEL~-- /NOTE PUSELOHE IS SEEETEO WITH jFIHRig~j I/H SQ BALSA SHzNOI&iIQWNFOOIT ICRTI CRUTCHLL ___ ITOLETY 00 SIZE 4NOTE CO IS LOCATED ~*HO FUSELAGE SIDE RETAINOR ______ F-STEffADLIPCBALM F-SBFIB 121 Hr RALSA / IIEUTOIIT IN /FIH MAYOR MAIRTIIV11 CUTHOTS OR 111 ONLY i1l OR F-IT ONKj FNO FOR FST PR BALSA SAROT PSR PR NALOH SHEET --F-AT 5/NA BALSA ONSET COTOILT IS FAT _____F-SB S/IA BHLAA SHOOT F-4T____NOYCOIN F-48F-2T F-RT HOLY RO PO PLY BOTTOM SHEET MAOIFACTURRSS CO KCDmGIPATTERT\ FIT LL PA RYS HEE FINAL HOSOMRLY-REPRHOA U FRINTO CHOLO PRODUCE H STORIlON LI RPOEIFERTIa WBA SPANPB WISH AREABOA SQ lIE AIRFOLSYMMETRICAL FUSE LENGThSI ENGINE90 ION PRO STROKE LAO FOOR STROKE WOWOTB B LBS TCPESPORT SCALE MODEL AVIATION 9IS6M NOON PLANS B UOW OOMARCO 1H5H5B LiIIIi.J ALL 040151* 0Y1 05 FSIPO ENSHE SHOWN FIT IHS 3-PH OIA BOA HOC DC PLY FRONTSN SOULSWI32 BALSA U E SACETINGLEADING CONE IS 2 ODWEL PLATElop HAD BOTTOGLAMINATIONS OF CGBALSA OCE WING PLANGALSA SOECTWING TIP ____Io — DC ELY L NII______4L __PLA*VHhK1L47zz7-____ NOTE WING IS BOLT HPOIOEDOWN YE STOCK1M BALSA WINGSHEET W-G11~t V4BALSA IA PLY PLATEVAPLYPER TUNE NBACC-IW____________________________ 1ff 1522____ W 10____ ______ Co CZIt NGTE COCA RING TO CUT IN SPARSESIGNES BY MAGH SINIAGNI NOTE ALLI~JP-I28SHED PLANG GY JOE DEMARCO can never go wrong finishing model Hobbypoxy enamel paint Superior hiding power performance make Hobbypoxy sure winner time Nobody can beat winning formula Super-strong two-part epoxy enamel Can brushed sprayed Durable flexible Wont chip crack peel Stands up racing fuels water wear Adheres iron-films woven fabric iron-on coverings Matches films mixing 16 standard colors high gloss flat finishes Mixing formula chart military colors Hobbypoxy Custom Metallizer adds superb metallic lusters just coat second coat will put miles ahead competition Hobbypoxy paint model finish couldnt easier Sukhoi/Sirianni Continued page 19 complete access engine throttle pushrod fuel lines engine plain view adjustments best part no messy fiberglass cowl paint may want cut hole bottom cowl compartment help cooling Get good in-cowl muffler set Finishing Fill nicks dents good balsa filler sand ther entire model get ready cover recommend iron-on film covering keep weight down choice Goldberg UltraCote have using UltraCote quite some time now am very satisfied results covering very easy work get really top-quality job easily goes around curves covers over itself minimum bubbles stripes stars numbers cut UltraCote material made easy complicated color scheme Flying The Sukhoi easiest models will ever fly Takeoffs very easythe wide landing gear makes excellent ground handling Very little right rudder needed takeoff light weight large size makes smooth-flying model model will stunt can think Just like full-scale plane model outstanding performer best part flying plane landings model will come quite slowly very stable low speeds Overall plane just lot fun fly Custom-made landing gear available Abell Hobby Manufacturing Co Box 22573 Billings MT 59101 Tel 406 259-4882 Sig Canopy #223 available Sig Manufacturing 40 1-7 South Front Street PO Box 816 Montezuma IA 50171-9990 odel Aviation color chip card military mixing charts copy POXY POINTERS helpful guide using Hobbypoxy products call 1-201-625-3100 See us WRAMS REALISTIC MOTION RETRACT CONTROL VALVES See us Show Lower level All valves feature exhaust speed control Toledo Show have expanded range retract control valves cover needsThese valves work standard servos door sequancing done inside valve speed control throw away troublesome restrictors NEW ATTENTION SPRING AIR OWNERS can now have inde pendant speed control up down speeds new UP5valve$289 5 NEW NEW Secondary door control valve UP4 used conjunction UP2 valve will provide control tail-wheel doors MUSTANGS secondary doors need stay open q ear down though main doors closedsuch B25 $4495 NEW 7/16 dia DOOR CYLINDERS 1 stroke 13 lb thrust metal body $2185 NEW Door cylinder 5/16 dia 1 inch stroke 8 lb thrust metal body $1900 UP1 Independent speed control & switching struts $2895 UP2Strut & door control Mustangs Door opens strut lowers door closes Door opens strut raises door closes $7465100 INCH MUSTANG RETRACTS 50 LB RATING UP3 Strut & door control valve P47 Door opens-strut lowers-Totally enclosed mechanism-all metal-i inch air cylinder-85 degre door stays open Strut raises-door closes$7465retraction Fits between ribs$579OO including UP2 valve ULTRA PRECISION Technical Services Ltd 1244 Honeysuckle Crescent Oakvi lIe OntarioL6H 2S8 Canada Phone 905 1703 Dealer inquiries welcomeAll prices US fundsShipping valves & cylinders $450
Edition: Model Aviation - 1994/08
Page Numbers: 17, 18, 19, 20, 21, 22, 23, 24
The exciting aerobatic airplane world way former National Champion Clint McHenry describes Sukhoi Su-26M McHenry compared Sukhois appearance 1937 Thompson trophy racer its sound Grumman Bearcat aerobatics world got its first look Sukhoi Hungary 1984 World Championships Soviets brought two Sukhois Hungary still relied mainly Yak 55 Two years later Soviets flew refined version Su-26M World Championships England won mens womens team titles Since time Sukhoi has become hottest plane very competitive world full-scale aerobatics Sukhoi constructed titanium alloy wing ribs main gear exhaust system Carbon fiber used main spars geared supercharged 360 HP Vedeneyev M-14 nine-cylinder radial engine performance fantastic opportunity see first two Sukhois US Oshkosh July 1989 After watching test pilot Yevgeni Frolov pit Sukhoi through wildest air show routine ever seen knew build plane Since selling price about $225000 little could afford thought model Sukhoi better suited hobby budget wanted large plane fly SuperTigre 90 engine weight 8/2-9 pounds depending what engine use prototype flew quite nicely 90 engine others have used variety engines OS 108 OS YS 120 four-strokes high power 108 120 four-strokes performance August1994 17 Closeup Russian test pilot ready another flight Canopy available Sig Manufacturing address text outstanding Whichever engine choose Sukhoi will give hours great flying CONSTRUCTION Wing Pick piece hard /s balsa cut jig Its 36 inches long tapers As /2 Pin lower 3/ square spruce spar plan Pin jig place rib 12 Pin ribs place trim necessary Pin ribs spar jig glue place Glue top spar place Add leading edge ribs Glue /s x 3/ strip trailing edge Add /32 LE sheeting rib 1 outward sheet over center area time Add /32 x 2 TE sheeting Now build other wing panel up point Cut /s slot back edge spar rib 1 will allow /s plywood dihedral brace slide through Draw 72inch line workbench guide align wing panels joining wing halves joined together upside down Lay some waxed paper center pin panels main spars exactly line Shim center section 34 inch TB rib 12 Epoxy dihedral brace securely place back main spars Glue balsa filler trailing edge Let wing dry thoroughly Epoxy /s plywood ribs lA place two ribs flush top wing rib 1 rib sets proper angle landing gear plate Epoxy landing gear plate place Take time get plate securely position important part wing stress landing gear going plate good job Drill two /8 holes front dowel plate Epoxy place add balsa ribs lB /32 bottom LB sheetingWhen dry cut opening landing gear Install landing gear four 6-32 screws blind nuts Add bottom TB sheeting Sheet top center section bottom will finished after wing fitted fuselage Attach /2 X 2 TB aileron servos paper tubes servo wires Add cap strips wingtips Sand wing set aside will need completed wing construct fuselage Tail The tail pieces constructed square balsa sheeted /16 balsa Build stab elevators fin rudder over plans used six-inch-wide As balsa sheeting using wider balsa eliminates seams Sand pieces set aside until later Fuselage The fuselage us built top bottom halves re crutch square pinned flat building board top-half fuselage formers glued Pin a spruce doublers over top view plans Add two /2 balsa formers Fl Glue F2 back Fl Use engine guide determine far back should position F3 plans show approximate position 120 four-stroke engine engine must mounted upright hardwood rails Attach F4 F5 F6 build tank compartment Add top stringer between F2 F6 Drill holes throttle pushrod remaining top formers spruce stringers between F9 Fl now glued place Make sure top stringer parallel work surface because stab sits stringers Add balsa tail posts cockpit floor top F6 F7 F8 After basic framework dry time sheet top half fuselage Using soft A2 x 4 balsa carefully sheet fuselage Make sure framework remains securely pinned workbench use aliphatic resin glue gives plenty time pin balsa sheeting top formers Lightly sand tops F9 PlO Fil Add balsa top Cut piece little oversize allow final sanding After top dry remove building board turn body over prepare build bottom half Use engine carefully measure spacing needed hardwood mounts Cut notches bottom formers F3B F5B Take time next few steps get mounts straight no side down thrust sure everything straight epoxy mounts place next steps need completed wing Take time properly aiign wing drill dowel holes F5B fuselage upside down workbench use level aiign fuselage top workbench have incidence meter step goes little easier Put wing place fuselage mark dowel locations F5B used doweling center /s doweling center metal plug has sharp point end plug fits /i hole ood front dowel plate Simply set wing saddle area 00 incidence press forward doweling center will put small mark F5B exact location holes Drill two holes F5B Remove wing 18 Model Aviation lage use long drill bit make two holes rear dowels /s plywood dihedral brace Epoxy dowels place Finish sheeting wing over landing gear plate Turn wing over add bottom center section sheeting Try wing fuselage check fit Drill holes hardwood block nylon bolts Sheet front portion fuselage same manner top Add rear bottom formers F8B F9B FlOB FliB Fl2B Add /4 stringer Plan pushrod locations before sheeting bottom section pushrods place sheet section soft 3A2 balsa Test-fit stab atop ce stringers Check level again Add plywood between stringers makes good base stab sit Drill s through plywood base dowel fin go through Add soft balsa blocks side fin sand shape wing firmly attached fuselage time build bottom belly pan removable hatch Glue H8 H6 place Set H5 front H6 place glue Add stringer between H5 H8 Cut stringer between two H6 formers remove part removable part covers landing gear Sheet section /32 balsa hatch attached wing 8-32 screw Glue hardwood block bottom wing tap screw screw enough hold hatch place Cowl Cut After fuselage has finish-sanded time cut loose top half cowl Carefully mark line front F3 cut good saw along line Cut above crutch remove top cowl Epoxy two rear cowl hold-down blocks two front -inch plywood strips place everything dry drill holes front side screws cowl arrangement has proven work very well cowl half removed Continued page 24 August1994 19 I ii 1 Type RO Sport Scale Wingspan 76 inches Engine size/type 90-108 twostroke 120 four-stroke Number channels Four Flying weight 8-9 pounds Construction Built-up Covering/finish UltraCote Tail section framework re balsa will later covered Incidence meter being used set location dowel holes F5B six-inch-wide Vie balsa avoid seams /a doweling center marks correct spot Bottom view fuselage showing hardwood engine mounts Wing center section dowels epoxied place Fuselage sanded ready cover 20 Model Aviation t bottom fuselage tank compartment dowel holes Rear fuselage formers nger Bottom belly pan removable hatch under construction Top cowl section cut away YS 120 engine shown Framed up modelready cover SUKHO1 SU-26 H MARK 8IRIAI4 M BUVPV ic GI3RICk w WcKSONTVFULLSCRLEaRNES I- CLAIMS ThIS RUSSIRN SHIP IS ONE GREAT AIRPLINEACE F T T1A POLITICIANS 3QVALE CUDTWE WIAO Ci* LOVE AND FiXAIRPLANES NAVE BJTER T14INGS TO NZiYDO.LETSIF WE CAN GETA RIDE N IT COSEE COk-Y79ErE 6 PA-L ThIE AMGAR zAT 4 SO SFRUCE IUBLER SQ L5A CRUTCIi 7 N -7N V 7 SHEI 4z B1LS SAEPNG 1vPIcL j ELS SHT RIBS 38SPaICE 5Rb roP& BOTTOM)A S4ILSR LRMINAT AE~LSfl 5HLN PL SO -~SSPRUCE ~jVV V SPECIAL IN ThREiSFiNNR. IS 3 DIfl WI4EEL5 V POUR CYCLE ON 10 WET ENGINE USE HO TWO CICLOT FUSELAGE TOP VIEW N F-SII IR BALSA SHOOT HOSE RACIC SANE SHAPE HO FA CLUE HI PLACE AFTER TOP SALT OP NISRRHISH SHEET/ k 5 OIH MAIN WHEELS 00 BALSA SHOET F-ET flASH HO SQ RALSA CASITCH PC SQ SPRUCE OSORLES AR PLVWHOB F-B B PB BALSA ____SHEETF-SF7 PR BALSA / / LON BALSA NIEET IPSEBALSACUT TO FITB COCOPIT FLOORS SHEET TELF ST/ HOUS PAT BALSA F9 ________________________ IC SQ SALSA PC RALSAFIN RUHOER H /GUSSETBALSA TIlER MEET 11CC RALSA F-s_____RALOA S SHOOTHINOP TO I/COO HOSE / FINRUDDER\ I/NSA SPESICE-.---LW HOWEL~-- /NOTE PUSELOHE IS SEEETEO WITH jFIHRig~j I/H SQ BALSA SHzNOI&iIQWNFOOIT ICRTI CRUTCHLL ___ ITOLETY 00 SIZE 4NOTE CO IS LOCATED ~*HO FUSELAGE SIDE RETAINOR ______ F-STEffADLIPCBALM F-SBFIB 121 Hr RALSA / IIEUTOIIT IN /FIH MAYOR MAIRTIIV11 CUTHOTS OR 111 ONLY i1l OR F-IT ONKj FNO FOR FST PR BALSA SAROT PSR PR NALOH SHEET --F-AT 5/NA BALSA ONSET COTOILT IS FAT _____F-SB S/IA BHLAA SHOOT F-4T____NOYCOIN F-48F-2T F-RT HOLY RO PO PLY BOTTOM SHEET MAOIFACTURRSS CO KCDmGIPATTERT\ FIT LL PA RYS HEE FINAL HOSOMRLY-REPRHOA U FRINTO CHOLO PRODUCE H STORIlON LI RPOEIFERTIa WBA SPANPB WISH AREABOA SQ lIE AIRFOLSYMMETRICAL FUSE LENGThSI ENGINE90 ION PRO STROKE LAO FOOR STROKE WOWOTB B LBS TCPESPORT SCALE MODEL AVIATION 9IS6M NOON PLANS B UOW OOMARCO 1H5H5B LiIIIi.J ALL 040151* 0Y1 05 FSIPO ENSHE SHOWN FIT IHS 3-PH OIA BOA HOC DC PLY FRONTSN SOULSWI32 BALSA U E SACETINGLEADING CONE IS 2 ODWEL PLATElop HAD BOTTOGLAMINATIONS OF CGBALSA OCE WING PLANGALSA SOECTWING TIP ____Io — DC ELY L NII______4L __PLA*VHhK1L47zz7-____ NOTE WING IS BOLT HPOIOEDOWN YE STOCK1M BALSA WINGSHEET W-G11~t V4BALSA IA PLY PLATEVAPLYPER TUNE NBACC-IW____________________________ 1ff 1522____ W 10____ ______ Co CZIt NGTE COCA RING TO CUT IN SPARSESIGNES BY MAGH SINIAGNI NOTE ALLI~JP-I28SHED PLANG GY JOE DEMARCO can never go wrong finishing model Hobbypoxy enamel paint Superior hiding power performance make Hobbypoxy sure winner time Nobody can beat winning formula Super-strong two-part epoxy enamel Can brushed sprayed Durable flexible Wont chip crack peel Stands up racing fuels water wear Adheres iron-films woven fabric iron-on coverings Matches films mixing 16 standard colors high gloss flat finishes Mixing formula chart military colors Hobbypoxy Custom Metallizer adds superb metallic lusters just coat second coat will put miles ahead competition Hobbypoxy paint model finish couldnt easier Sukhoi/Sirianni Continued page 19 complete access engine throttle pushrod fuel lines engine plain view adjustments best part no messy fiberglass cowl paint may want cut hole bottom cowl compartment help cooling Get good in-cowl muffler set Finishing Fill nicks dents good balsa filler sand ther entire model get ready cover recommend iron-on film covering keep weight down choice Goldberg UltraCote have using UltraCote quite some time now am very satisfied results covering very easy work get really top-quality job easily goes around curves covers over itself minimum bubbles stripes stars numbers cut UltraCote material made easy complicated color scheme Flying The Sukhoi easiest models will ever fly Takeoffs very easythe wide landing gear makes excellent ground handling Very little right rudder needed takeoff light weight large size makes smooth-flying model model will stunt can think Just like full-scale plane model outstanding performer best part flying plane landings model will come quite slowly very stable low speeds Overall plane just lot fun fly Custom-made landing gear available Abell Hobby Manufacturing Co Box 22573 Billings MT 59101 Tel 406 259-4882 Sig Canopy #223 available Sig Manufacturing 40 1-7 South Front Street PO Box 816 Montezuma IA 50171-9990 odel Aviation color chip card military mixing charts copy POXY POINTERS helpful guide using Hobbypoxy products call 1-201-625-3100 See us WRAMS REALISTIC MOTION RETRACT CONTROL VALVES See us Show Lower level All valves feature exhaust speed control Toledo Show have expanded range retract control valves cover needsThese valves work standard servos door sequancing done inside valve speed control throw away troublesome restrictors NEW ATTENTION SPRING AIR OWNERS can now have inde pendant speed control up down speeds new UP5valve$289 5 NEW NEW Secondary door control valve UP4 used conjunction UP2 valve will provide control tail-wheel doors MUSTANGS secondary doors need stay open q ear down though main doors closedsuch B25 $4495 NEW 7/16 dia DOOR CYLINDERS 1 stroke 13 lb thrust metal body $2185 NEW Door cylinder 5/16 dia 1 inch stroke 8 lb thrust metal body $1900 UP1 Independent speed control & switching struts $2895 UP2Strut & door control Mustangs Door opens strut lowers door closes Door opens strut raises door closes $7465100 INCH MUSTANG RETRACTS 50 LB RATING UP3 Strut & door control valve P47 Door opens-strut lowers-Totally enclosed mechanism-all metal-i inch air cylinder-85 degre door stays open Strut raises-door closes$7465retraction Fits between ribs$579OO including UP2 valve ULTRA PRECISION Technical Services Ltd 1244 Honeysuckle Crescent Oakvi lIe OntarioL6H 2S8 Canada Phone 905 1703 Dealer inquiries welcomeAll prices US fundsShipping valves & cylinders $450
Edition: Model Aviation - 1994/08
Page Numbers: 17, 18, 19, 20, 21, 22, 23, 24
The exciting aerobatic airplane world way former National Champion Clint McHenry describes Sukhoi Su-26M McHenry compared Sukhois appearance 1937 Thompson trophy racer its sound Grumman Bearcat aerobatics world got its first look Sukhoi Hungary 1984 World Championships Soviets brought two Sukhois Hungary still relied mainly Yak 55 Two years later Soviets flew refined version Su-26M World Championships England won mens womens team titles Since time Sukhoi has become hottest plane very competitive world full-scale aerobatics Sukhoi constructed titanium alloy wing ribs main gear exhaust system Carbon fiber used main spars geared supercharged 360 HP Vedeneyev M-14 nine-cylinder radial engine performance fantastic opportunity see first two Sukhois US Oshkosh July 1989 After watching test pilot Yevgeni Frolov pit Sukhoi through wildest air show routine ever seen knew build plane Since selling price about $225000 little could afford thought model Sukhoi better suited hobby budget wanted large plane fly SuperTigre 90 engine weight 8/2-9 pounds depending what engine use prototype flew quite nicely 90 engine others have used variety engines OS 108 OS YS 120 four-strokes high power 108 120 four-strokes performance August1994 17 Closeup Russian test pilot ready another flight Canopy available Sig Manufacturing address text outstanding Whichever engine choose Sukhoi will give hours great flying CONSTRUCTION Wing Pick piece hard /s balsa cut jig Its 36 inches long tapers As /2 Pin lower 3/ square spruce spar plan Pin jig place rib 12 Pin ribs place trim necessary Pin ribs spar jig glue place Glue top spar place Add leading edge ribs Glue /s x 3/ strip trailing edge Add /32 LE sheeting rib 1 outward sheet over center area time Add /32 x 2 TE sheeting Now build other wing panel up point Cut /s slot back edge spar rib 1 will allow /s plywood dihedral brace slide through Draw 72inch line workbench guide align wing panels joining wing halves joined together upside down Lay some waxed paper center pin panels main spars exactly line Shim center section 34 inch TB rib 12 Epoxy dihedral brace securely place back main spars Glue balsa filler trailing edge Let wing dry thoroughly Epoxy /s plywood ribs lA place two ribs flush top wing rib 1 rib sets proper angle landing gear plate Epoxy landing gear plate place Take time get plate securely position important part wing stress landing gear going plate good job Drill two /8 holes front dowel plate Epoxy place add balsa ribs lB /32 bottom LB sheetingWhen dry cut opening landing gear Install landing gear four 6-32 screws blind nuts Add bottom TB sheeting Sheet top center section bottom will finished after wing fitted fuselage Attach /2 X 2 TB aileron servos paper tubes servo wires Add cap strips wingtips Sand wing set aside will need completed wing construct fuselage Tail The tail pieces constructed square balsa sheeted /16 balsa Build stab elevators fin rudder over plans used six-inch-wide As balsa sheeting using wider balsa eliminates seams Sand pieces set aside until later Fuselage The fuselage us built top bottom halves re crutch square pinned flat building board top-half fuselage formers glued Pin a spruce doublers over top view plans Add two /2 balsa formers Fl Glue F2 back Fl Use engine guide determine far back should position F3 plans show approximate position 120 four-stroke engine engine must mounted upright hardwood rails Attach F4 F5 F6 build tank compartment Add top stringer between F2 F6 Drill holes throttle pushrod remaining top formers spruce stringers between F9 Fl now glued place Make sure top stringer parallel work surface because stab sits stringers Add balsa tail posts cockpit floor top F6 F7 F8 After basic framework dry time sheet top half fuselage Using soft A2 x 4 balsa carefully sheet fuselage Make sure framework remains securely pinned workbench use aliphatic resin glue gives plenty time pin balsa sheeting top formers Lightly sand tops F9 PlO Fil Add balsa top Cut piece little oversize allow final sanding After top dry remove building board turn body over prepare build bottom half Use engine carefully measure spacing needed hardwood mounts Cut notches bottom formers F3B F5B Take time next few steps get mounts straight no side down thrust sure everything straight epoxy mounts place next steps need completed wing Take time properly aiign wing drill dowel holes F5B fuselage upside down workbench use level aiign fuselage top workbench have incidence meter step goes little easier Put wing place fuselage mark dowel locations F5B used doweling center /s doweling center metal plug has sharp point end plug fits /i hole ood front dowel plate Simply set wing saddle area 00 incidence press forward doweling center will put small mark F5B exact location holes Drill two holes F5B Remove wing 18 Model Aviation lage use long drill bit make two holes rear dowels /s plywood dihedral brace Epoxy dowels place Finish sheeting wing over landing gear plate Turn wing over add bottom center section sheeting Try wing fuselage check fit Drill holes hardwood block nylon bolts Sheet front portion fuselage same manner top Add rear bottom formers F8B F9B FlOB FliB Fl2B Add /4 stringer Plan pushrod locations before sheeting bottom section pushrods place sheet section soft 3A2 balsa Test-fit stab atop ce stringers Check level again Add plywood between stringers makes good base stab sit Drill s through plywood base dowel fin go through Add soft balsa blocks side fin sand shape wing firmly attached fuselage time build bottom belly pan removable hatch Glue H8 H6 place Set H5 front H6 place glue Add stringer between H5 H8 Cut stringer between two H6 formers remove part removable part covers landing gear Sheet section /32 balsa hatch attached wing 8-32 screw Glue hardwood block bottom wing tap screw screw enough hold hatch place Cowl Cut After fuselage has finish-sanded time cut loose top half cowl Carefully mark line front F3 cut good saw along line Cut above crutch remove top cowl Epoxy two rear cowl hold-down blocks two front -inch plywood strips place everything dry drill holes front side screws cowl arrangement has proven work very well cowl half removed Continued page 24 August1994 19 I ii 1 Type RO Sport Scale Wingspan 76 inches Engine size/type 90-108 twostroke 120 four-stroke Number channels Four Flying weight 8-9 pounds Construction Built-up Covering/finish UltraCote Tail section framework re balsa will later covered Incidence meter being used set location dowel holes F5B six-inch-wide Vie balsa avoid seams /a doweling center marks correct spot Bottom view fuselage showing hardwood engine mounts Wing center section dowels epoxied place Fuselage sanded ready cover 20 Model Aviation t bottom fuselage tank compartment dowel holes Rear fuselage formers nger Bottom belly pan removable hatch under construction Top cowl section cut away YS 120 engine shown Framed up modelready cover SUKHO1 SU-26 H MARK 8IRIAI4 M BUVPV ic GI3RICk w WcKSONTVFULLSCRLEaRNES I- CLAIMS ThIS RUSSIRN SHIP IS ONE GREAT AIRPLINEACE F T T1A POLITICIANS 3QVALE CUDTWE WIAO Ci* LOVE AND FiXAIRPLANES NAVE BJTER T14INGS TO NZiYDO.LETSIF WE CAN GETA RIDE N IT COSEE COk-Y79ErE 6 PA-L ThIE AMGAR zAT 4 SO SFRUCE IUBLER SQ L5A CRUTCIi 7 N -7N V 7 SHEI 4z B1LS SAEPNG 1vPIcL j ELS SHT RIBS 38SPaICE 5Rb roP& BOTTOM)A S4ILSR LRMINAT AE~LSfl 5HLN PL SO -~SSPRUCE ~jVV V SPECIAL IN ThREiSFiNNR. IS 3 DIfl WI4EEL5 V POUR CYCLE ON 10 WET ENGINE USE HO TWO CICLOT FUSELAGE TOP VIEW N F-SII IR BALSA SHOOT HOSE RACIC SANE SHAPE HO FA CLUE HI PLACE AFTER TOP SALT OP NISRRHISH SHEET/ k 5 OIH MAIN WHEELS 00 BALSA SHOET F-ET flASH HO SQ RALSA CASITCH PC SQ SPRUCE OSORLES AR PLVWHOB F-B B PB BALSA ____SHEETF-SF7 PR BALSA / / LON BALSA NIEET IPSEBALSACUT TO FITB COCOPIT FLOORS SHEET TELF ST/ HOUS PAT BALSA F9 ________________________ IC SQ SALSA PC RALSAFIN RUHOER H /GUSSETBALSA TIlER MEET 11CC RALSA F-s_____RALOA S SHOOTHINOP TO I/COO HOSE / FINRUDDER\ I/NSA SPESICE-.---LW HOWEL~-- /NOTE PUSELOHE IS SEEETEO WITH jFIHRig~j I/H SQ BALSA SHzNOI&iIQWNFOOIT ICRTI CRUTCHLL ___ ITOLETY 00 SIZE 4NOTE CO IS LOCATED ~*HO FUSELAGE SIDE RETAINOR ______ F-STEffADLIPCBALM F-SBFIB 121 Hr RALSA / IIEUTOIIT IN /FIH MAYOR MAIRTIIV11 CUTHOTS OR 111 ONLY i1l OR F-IT ONKj FNO FOR FST PR BALSA SAROT PSR PR NALOH SHEET --F-AT 5/NA BALSA ONSET COTOILT IS FAT _____F-SB S/IA BHLAA SHOOT F-4T____NOYCOIN F-48F-2T F-RT HOLY RO PO PLY BOTTOM SHEET MAOIFACTURRSS CO KCDmGIPATTERT\ FIT LL PA RYS HEE FINAL HOSOMRLY-REPRHOA U FRINTO CHOLO PRODUCE H STORIlON LI RPOEIFERTIa WBA SPANPB WISH AREABOA SQ lIE AIRFOLSYMMETRICAL FUSE LENGThSI ENGINE90 ION PRO STROKE LAO FOOR STROKE WOWOTB B LBS TCPESPORT SCALE MODEL AVIATION 9IS6M NOON PLANS B UOW OOMARCO 1H5H5B LiIIIi.J ALL 040151* 0Y1 05 FSIPO ENSHE SHOWN FIT IHS 3-PH OIA BOA HOC DC PLY FRONTSN SOULSWI32 BALSA U E SACETINGLEADING CONE IS 2 ODWEL PLATElop HAD BOTTOGLAMINATIONS OF CGBALSA OCE WING PLANGALSA SOECTWING TIP ____Io — DC ELY L NII______4L __PLA*VHhK1L47zz7-____ NOTE WING IS BOLT HPOIOEDOWN YE STOCK1M BALSA WINGSHEET W-G11~t V4BALSA IA PLY PLATEVAPLYPER TUNE NBACC-IW____________________________ 1ff 1522____ W 10____ ______ Co CZIt NGTE COCA RING TO CUT IN SPARSESIGNES BY MAGH SINIAGNI NOTE ALLI~JP-I28SHED PLANG GY JOE DEMARCO can never go wrong finishing model Hobbypoxy enamel paint Superior hiding power performance make Hobbypoxy sure winner time Nobody can beat winning formula Super-strong two-part epoxy enamel Can brushed sprayed Durable flexible Wont chip crack peel Stands up racing fuels water wear Adheres iron-films woven fabric iron-on coverings Matches films mixing 16 standard colors high gloss flat finishes Mixing formula chart military colors Hobbypoxy Custom Metallizer adds superb metallic lusters just coat second coat will put miles ahead competition Hobbypoxy paint model finish couldnt easier Sukhoi/Sirianni Continued page 19 complete access engine throttle pushrod fuel lines engine plain view adjustments best part no messy fiberglass cowl paint may want cut hole bottom cowl compartment help cooling Get good in-cowl muffler set Finishing Fill nicks dents good balsa filler sand ther entire model get ready cover recommend iron-on film covering keep weight down choice Goldberg UltraCote have using UltraCote quite some time now am very satisfied results covering very easy work get really top-quality job easily goes around curves covers over itself minimum bubbles stripes stars numbers cut UltraCote material made easy complicated color scheme Flying The Sukhoi easiest models will ever fly Takeoffs very easythe wide landing gear makes excellent ground handling Very little right rudder needed takeoff light weight large size makes smooth-flying model model will stunt can think Just like full-scale plane model outstanding performer best part flying plane landings model will come quite slowly very stable low speeds Overall plane just lot fun fly Custom-made landing gear available Abell Hobby Manufacturing Co Box 22573 Billings MT 59101 Tel 406 259-4882 Sig Canopy #223 available Sig Manufacturing 40 1-7 South Front Street PO Box 816 Montezuma IA 50171-9990 odel Aviation color chip card military mixing charts copy POXY POINTERS helpful guide using Hobbypoxy products call 1-201-625-3100 See us WRAMS REALISTIC MOTION RETRACT CONTROL VALVES See us Show Lower level All valves feature exhaust speed control Toledo Show have expanded range retract control valves cover needsThese valves work standard servos door sequancing done inside valve speed control throw away troublesome restrictors NEW ATTENTION SPRING AIR OWNERS can now have inde pendant speed control up down speeds new UP5valve$289 5 NEW NEW Secondary door control valve UP4 used conjunction UP2 valve will provide control tail-wheel doors MUSTANGS secondary doors need stay open q ear down though main doors closedsuch B25 $4495 NEW 7/16 dia DOOR CYLINDERS 1 stroke 13 lb thrust metal body $2185 NEW Door cylinder 5/16 dia 1 inch stroke 8 lb thrust metal body $1900 UP1 Independent speed control & switching struts $2895 UP2Strut & door control Mustangs Door opens strut lowers door closes Door opens strut raises door closes $7465100 INCH MUSTANG RETRACTS 50 LB RATING UP3 Strut & door control valve P47 Door opens-strut lowers-Totally enclosed mechanism-all metal-i inch air cylinder-85 degre door stays open Strut raises-door closes$7465retraction Fits between ribs$579OO including UP2 valve ULTRA PRECISION Technical Services Ltd 1244 Honeysuckle Crescent Oakvi lIe OntarioL6H 2S8 Canada Phone 905 1703 Dealer inquiries welcomeAll prices US fundsShipping valves & cylinders $450
Edition: Model Aviation - 1994/08
Page Numbers: 17, 18, 19, 20, 21, 22, 23, 24
The exciting aerobatic airplane world way former National Champion Clint McHenry describes Sukhoi Su-26M McHenry compared Sukhois appearance 1937 Thompson trophy racer its sound Grumman Bearcat aerobatics world got its first look Sukhoi Hungary 1984 World Championships Soviets brought two Sukhois Hungary still relied mainly Yak 55 Two years later Soviets flew refined version Su-26M World Championships England won mens womens team titles Since time Sukhoi has become hottest plane very competitive world full-scale aerobatics Sukhoi constructed titanium alloy wing ribs main gear exhaust system Carbon fiber used main spars geared supercharged 360 HP Vedeneyev M-14 nine-cylinder radial engine performance fantastic opportunity see first two Sukhois US Oshkosh July 1989 After watching test pilot Yevgeni Frolov pit Sukhoi through wildest air show routine ever seen knew build plane Since selling price about $225000 little could afford thought model Sukhoi better suited hobby budget wanted large plane fly SuperTigre 90 engine weight 8/2-9 pounds depending what engine use prototype flew quite nicely 90 engine others have used variety engines OS 108 OS YS 120 four-strokes high power 108 120 four-strokes performance August1994 17 Closeup Russian test pilot ready another flight Canopy available Sig Manufacturing address text outstanding Whichever engine choose Sukhoi will give hours great flying CONSTRUCTION Wing Pick piece hard /s balsa cut jig Its 36 inches long tapers As /2 Pin lower 3/ square spruce spar plan Pin jig place rib 12 Pin ribs place trim necessary Pin ribs spar jig glue place Glue top spar place Add leading edge ribs Glue /s x 3/ strip trailing edge Add /32 LE sheeting rib 1 outward sheet over center area time Add /32 x 2 TE sheeting Now build other wing panel up point Cut /s slot back edge spar rib 1 will allow /s plywood dihedral brace slide through Draw 72inch line workbench guide align wing panels joining wing halves joined together upside down Lay some waxed paper center pin panels main spars exactly line Shim center section 34 inch TB rib 12 Epoxy dihedral brace securely place back main spars Glue balsa filler trailing edge Let wing dry thoroughly Epoxy /s plywood ribs lA place two ribs flush top wing rib 1 rib sets proper angle landing gear plate Epoxy landing gear plate place Take time get plate securely position important part wing stress landing gear going plate good job Drill two /8 holes front dowel plate Epoxy place add balsa ribs lB /32 bottom LB sheetingWhen dry cut opening landing gear Install landing gear four 6-32 screws blind nuts Add bottom TB sheeting Sheet top center section bottom will finished after wing fitted fuselage Attach /2 X 2 TB aileron servos paper tubes servo wires Add cap strips wingtips Sand wing set aside will need completed wing construct fuselage Tail The tail pieces constructed square balsa sheeted /16 balsa Build stab elevators fin rudder over plans used six-inch-wide As balsa sheeting using wider balsa eliminates seams Sand pieces set aside until later Fuselage The fuselage us built top bottom halves re crutch square pinned flat building board top-half fuselage formers glued Pin a spruce doublers over top view plans Add two /2 balsa formers Fl Glue F2 back Fl Use engine guide determine far back should position F3 plans show approximate position 120 four-stroke engine engine must mounted upright hardwood rails Attach F4 F5 F6 build tank compartment Add top stringer between F2 F6 Drill holes throttle pushrod remaining top formers spruce stringers between F9 Fl now glued place Make sure top stringer parallel work surface because stab sits stringers Add balsa tail posts cockpit floor top F6 F7 F8 After basic framework dry time sheet top half fuselage Using soft A2 x 4 balsa carefully sheet fuselage Make sure framework remains securely pinned workbench use aliphatic resin glue gives plenty time pin balsa sheeting top formers Lightly sand tops F9 PlO Fil Add balsa top Cut piece little oversize allow final sanding After top dry remove building board turn body over prepare build bottom half Use engine carefully measure spacing needed hardwood mounts Cut notches bottom formers F3B F5B Take time next few steps get mounts straight no side down thrust sure everything straight epoxy mounts place next steps need completed wing Take time properly aiign wing drill dowel holes F5B fuselage upside down workbench use level aiign fuselage top workbench have incidence meter step goes little easier Put wing place fuselage mark dowel locations F5B used doweling center /s doweling center metal plug has sharp point end plug fits /i hole ood front dowel plate Simply set wing saddle area 00 incidence press forward doweling center will put small mark F5B exact location holes Drill two holes F5B Remove wing 18 Model Aviation lage use long drill bit make two holes rear dowels /s plywood dihedral brace Epoxy dowels place Finish sheeting wing over landing gear plate Turn wing over add bottom center section sheeting Try wing fuselage check fit Drill holes hardwood block nylon bolts Sheet front portion fuselage same manner top Add rear bottom formers F8B F9B FlOB FliB Fl2B Add /4 stringer Plan pushrod locations before sheeting bottom section pushrods place sheet section soft 3A2 balsa Test-fit stab atop ce stringers Check level again Add plywood between stringers makes good base stab sit Drill s through plywood base dowel fin go through Add soft balsa blocks side fin sand shape wing firmly attached fuselage time build bottom belly pan removable hatch Glue H8 H6 place Set H5 front H6 place glue Add stringer between H5 H8 Cut stringer between two H6 formers remove part removable part covers landing gear Sheet section /32 balsa hatch attached wing 8-32 screw Glue hardwood block bottom wing tap screw screw enough hold hatch place Cowl Cut After fuselage has finish-sanded time cut loose top half cowl Carefully mark line front F3 cut good saw along line Cut above crutch remove top cowl Epoxy two rear cowl hold-down blocks two front -inch plywood strips place everything dry drill holes front side screws cowl arrangement has proven work very well cowl half removed Continued page 24 August1994 19 I ii 1 Type RO Sport Scale Wingspan 76 inches Engine size/type 90-108 twostroke 120 four-stroke Number channels Four Flying weight 8-9 pounds Construction Built-up Covering/finish UltraCote Tail section framework re balsa will later covered Incidence meter being used set location dowel holes F5B six-inch-wide Vie balsa avoid seams /a doweling center marks correct spot Bottom view fuselage showing hardwood engine mounts Wing center section dowels epoxied place Fuselage sanded ready cover 20 Model Aviation t bottom fuselage tank compartment dowel holes Rear fuselage formers nger Bottom belly pan removable hatch under construction Top cowl section cut away YS 120 engine shown Framed up modelready cover SUKHO1 SU-26 H MARK 8IRIAI4 M BUVPV ic GI3RICk w WcKSONTVFULLSCRLEaRNES I- CLAIMS ThIS RUSSIRN SHIP IS ONE GREAT AIRPLINEACE F T T1A POLITICIANS 3QVALE CUDTWE WIAO Ci* LOVE AND FiXAIRPLANES NAVE BJTER T14INGS TO NZiYDO.LETSIF WE CAN GETA RIDE N IT COSEE COk-Y79ErE 6 PA-L ThIE AMGAR zAT 4 SO SFRUCE IUBLER SQ L5A CRUTCIi 7 N -7N V 7 SHEI 4z B1LS SAEPNG 1vPIcL j ELS SHT RIBS 38SPaICE 5Rb roP& BOTTOM)A S4ILSR LRMINAT AE~LSfl 5HLN PL SO -~SSPRUCE ~jVV V SPECIAL IN ThREiSFiNNR. IS 3 DIfl WI4EEL5 V POUR CYCLE ON 10 WET ENGINE USE HO TWO CICLOT FUSELAGE TOP VIEW N F-SII IR BALSA SHOOT HOSE RACIC SANE SHAPE HO FA CLUE HI PLACE AFTER TOP SALT OP NISRRHISH SHEET/ k 5 OIH MAIN WHEELS 00 BALSA SHOET F-ET flASH HO SQ RALSA CASITCH PC SQ SPRUCE OSORLES AR PLVWHOB F-B B PB BALSA ____SHEETF-SF7 PR BALSA / / LON BALSA NIEET IPSEBALSACUT TO FITB COCOPIT FLOORS SHEET TELF ST/ HOUS PAT BALSA F9 ________________________ IC SQ SALSA PC RALSAFIN RUHOER H /GUSSETBALSA TIlER MEET 11CC RALSA F-s_____RALOA S SHOOTHINOP TO I/COO HOSE / FINRUDDER\ I/NSA SPESICE-.---LW HOWEL~-- /NOTE PUSELOHE IS SEEETEO WITH jFIHRig~j I/H SQ BALSA SHzNOI&iIQWNFOOIT ICRTI CRUTCHLL ___ ITOLETY 00 SIZE 4NOTE CO IS LOCATED ~*HO FUSELAGE SIDE RETAINOR ______ F-STEffADLIPCBALM F-SBFIB 121 Hr RALSA / IIEUTOIIT IN /FIH MAYOR MAIRTIIV11 CUTHOTS OR 111 ONLY i1l OR F-IT ONKj FNO FOR FST PR BALSA SAROT PSR PR NALOH SHEET --F-AT 5/NA BALSA ONSET COTOILT IS FAT _____F-SB S/IA BHLAA SHOOT F-4T____NOYCOIN F-48F-2T F-RT HOLY RO PO PLY BOTTOM SHEET MAOIFACTURRSS CO KCDmGIPATTERT\ FIT LL PA RYS HEE FINAL HOSOMRLY-REPRHOA U FRINTO CHOLO PRODUCE H STORIlON LI RPOEIFERTIa WBA SPANPB WISH AREABOA SQ lIE AIRFOLSYMMETRICAL FUSE LENGThSI ENGINE90 ION PRO STROKE LAO FOOR STROKE WOWOTB B LBS TCPESPORT SCALE MODEL AVIATION 9IS6M NOON PLANS B UOW OOMARCO 1H5H5B LiIIIi.J ALL 040151* 0Y1 05 FSIPO ENSHE SHOWN FIT IHS 3-PH OIA BOA HOC DC PLY FRONTSN SOULSWI32 BALSA U E SACETINGLEADING CONE IS 2 ODWEL PLATElop HAD BOTTOGLAMINATIONS OF CGBALSA OCE WING PLANGALSA SOECTWING TIP ____Io — DC ELY L NII______4L __PLA*VHhK1L47zz7-____ NOTE WING IS BOLT HPOIOEDOWN YE STOCK1M BALSA WINGSHEET W-G11~t V4BALSA IA PLY PLATEVAPLYPER TUNE NBACC-IW____________________________ 1ff 1522____ W 10____ ______ Co CZIt NGTE COCA RING TO CUT IN SPARSESIGNES BY MAGH SINIAGNI NOTE ALLI~JP-I28SHED PLANG GY JOE DEMARCO can never go wrong finishing model Hobbypoxy enamel paint Superior hiding power performance make Hobbypoxy sure winner time Nobody can beat winning formula Super-strong two-part epoxy enamel Can brushed sprayed Durable flexible Wont chip crack peel Stands up racing fuels water wear Adheres iron-films woven fabric iron-on coverings Matches films mixing 16 standard colors high gloss flat finishes Mixing formula chart military colors Hobbypoxy Custom Metallizer adds superb metallic lusters just coat second coat will put miles ahead competition Hobbypoxy paint model finish couldnt easier Sukhoi/Sirianni Continued page 19 complete access engine throttle pushrod fuel lines engine plain view adjustments best part no messy fiberglass cowl paint may want cut hole bottom cowl compartment help cooling Get good in-cowl muffler set Finishing Fill nicks dents good balsa filler sand ther entire model get ready cover recommend iron-on film covering keep weight down choice Goldberg UltraCote have using UltraCote quite some time now am very satisfied results covering very easy work get really top-quality job easily goes around curves covers over itself minimum bubbles stripes stars numbers cut UltraCote material made easy complicated color scheme Flying The Sukhoi easiest models will ever fly Takeoffs very easythe wide landing gear makes excellent ground handling Very little right rudder needed takeoff light weight large size makes smooth-flying model model will stunt can think Just like full-scale plane model outstanding performer best part flying plane landings model will come quite slowly very stable low speeds Overall plane just lot fun fly Custom-made landing gear available Abell Hobby Manufacturing Co Box 22573 Billings MT 59101 Tel 406 259-4882 Sig Canopy #223 available Sig Manufacturing 40 1-7 South Front Street PO Box 816 Montezuma IA 50171-9990 odel Aviation color chip card military mixing charts copy POXY POINTERS helpful guide using Hobbypoxy products call 1-201-625-3100 See us WRAMS REALISTIC MOTION RETRACT CONTROL VALVES See us Show Lower level All valves feature exhaust speed control Toledo Show have expanded range retract control valves cover needsThese valves work standard servos door sequancing done inside valve speed control throw away troublesome restrictors NEW ATTENTION SPRING AIR OWNERS can now have inde pendant speed control up down speeds new UP5valve$289 5 NEW NEW Secondary door control valve UP4 used conjunction UP2 valve will provide control tail-wheel doors MUSTANGS secondary doors need stay open q ear down though main doors closedsuch B25 $4495 NEW 7/16 dia DOOR CYLINDERS 1 stroke 13 lb thrust metal body $2185 NEW Door cylinder 5/16 dia 1 inch stroke 8 lb thrust metal body $1900 UP1 Independent speed control & switching struts $2895 UP2Strut & door control Mustangs Door opens strut lowers door closes Door opens strut raises door closes $7465100 INCH MUSTANG RETRACTS 50 LB RATING UP3 Strut & door control valve P47 Door opens-strut lowers-Totally enclosed mechanism-all metal-i inch air cylinder-85 degre door stays open Strut raises-door closes$7465retraction Fits between ribs$579OO including UP2 valve ULTRA PRECISION Technical Services Ltd 1244 Honeysuckle Crescent Oakvi lIe OntarioL6H 2S8 Canada Phone 905 1703 Dealer inquiries welcomeAll prices US fundsShipping valves & cylinders $450
Edition: Model Aviation - 1994/08
Page Numbers: 17, 18, 19, 20, 21, 22, 23, 24
The exciting aerobatic airplane world way former National Champion Clint McHenry describes Sukhoi Su-26M McHenry compared Sukhois appearance 1937 Thompson trophy racer its sound Grumman Bearcat aerobatics world got its first look Sukhoi Hungary 1984 World Championships Soviets brought two Sukhois Hungary still relied mainly Yak 55 Two years later Soviets flew refined version Su-26M World Championships England won mens womens team titles Since time Sukhoi has become hottest plane very competitive world full-scale aerobatics Sukhoi constructed titanium alloy wing ribs main gear exhaust system Carbon fiber used main spars geared supercharged 360 HP Vedeneyev M-14 nine-cylinder radial engine performance fantastic opportunity see first two Sukhois US Oshkosh July 1989 After watching test pilot Yevgeni Frolov pit Sukhoi through wildest air show routine ever seen knew build plane Since selling price about $225000 little could afford thought model Sukhoi better suited hobby budget wanted large plane fly SuperTigre 90 engine weight 8/2-9 pounds depending what engine use prototype flew quite nicely 90 engine others have used variety engines OS 108 OS YS 120 four-strokes high power 108 120 four-strokes performance August1994 17 Closeup Russian test pilot ready another flight Canopy available Sig Manufacturing address text outstanding Whichever engine choose Sukhoi will give hours great flying CONSTRUCTION Wing Pick piece hard /s balsa cut jig Its 36 inches long tapers As /2 Pin lower 3/ square spruce spar plan Pin jig place rib 12 Pin ribs place trim necessary Pin ribs spar jig glue place Glue top spar place Add leading edge ribs Glue /s x 3/ strip trailing edge Add /32 LE sheeting rib 1 outward sheet over center area time Add /32 x 2 TE sheeting Now build other wing panel up point Cut /s slot back edge spar rib 1 will allow /s plywood dihedral brace slide through Draw 72inch line workbench guide align wing panels joining wing halves joined together upside down Lay some waxed paper center pin panels main spars exactly line Shim center section 34 inch TB rib 12 Epoxy dihedral brace securely place back main spars Glue balsa filler trailing edge Let wing dry thoroughly Epoxy /s plywood ribs lA place two ribs flush top wing rib 1 rib sets proper angle landing gear plate Epoxy landing gear plate place Take time get plate securely position important part wing stress landing gear going plate good job Drill two /8 holes front dowel plate Epoxy place add balsa ribs lB /32 bottom LB sheetingWhen dry cut opening landing gear Install landing gear four 6-32 screws blind nuts Add bottom TB sheeting Sheet top center section bottom will finished after wing fitted fuselage Attach /2 X 2 TB aileron servos paper tubes servo wires Add cap strips wingtips Sand wing set aside will need completed wing construct fuselage Tail The tail pieces constructed square balsa sheeted /16 balsa Build stab elevators fin rudder over plans used six-inch-wide As balsa sheeting using wider balsa eliminates seams Sand pieces set aside until later Fuselage The fuselage us built top bottom halves re crutch square pinned flat building board top-half fuselage formers glued Pin a spruce doublers over top view plans Add two /2 balsa formers Fl Glue F2 back Fl Use engine guide determine far back should position F3 plans show approximate position 120 four-stroke engine engine must mounted upright hardwood rails Attach F4 F5 F6 build tank compartment Add top stringer between F2 F6 Drill holes throttle pushrod remaining top formers spruce stringers between F9 Fl now glued place Make sure top stringer parallel work surface because stab sits stringers Add balsa tail posts cockpit floor top F6 F7 F8 After basic framework dry time sheet top half fuselage Using soft A2 x 4 balsa carefully sheet fuselage Make sure framework remains securely pinned workbench use aliphatic resin glue gives plenty time pin balsa sheeting top formers Lightly sand tops F9 PlO Fil Add balsa top Cut piece little oversize allow final sanding After top dry remove building board turn body over prepare build bottom half Use engine carefully measure spacing needed hardwood mounts Cut notches bottom formers F3B F5B Take time next few steps get mounts straight no side down thrust sure everything straight epoxy mounts place next steps need completed wing Take time properly aiign wing drill dowel holes F5B fuselage upside down workbench use level aiign fuselage top workbench have incidence meter step goes little easier Put wing place fuselage mark dowel locations F5B used doweling center /s doweling center metal plug has sharp point end plug fits /i hole ood front dowel plate Simply set wing saddle area 00 incidence press forward doweling center will put small mark F5B exact location holes Drill two holes F5B Remove wing 18 Model Aviation lage use long drill bit make two holes rear dowels /s plywood dihedral brace Epoxy dowels place Finish sheeting wing over landing gear plate Turn wing over add bottom center section sheeting Try wing fuselage check fit Drill holes hardwood block nylon bolts Sheet front portion fuselage same manner top Add rear bottom formers F8B F9B FlOB FliB Fl2B Add /4 stringer Plan pushrod locations before sheeting bottom section pushrods place sheet section soft 3A2 balsa Test-fit stab atop ce stringers Check level again Add plywood between stringers makes good base stab sit Drill s through plywood base dowel fin go through Add soft balsa blocks side fin sand shape wing firmly attached fuselage time build bottom belly pan removable hatch Glue H8 H6 place Set H5 front H6 place glue Add stringer between H5 H8 Cut stringer between two H6 formers remove part removable part covers landing gear Sheet section /32 balsa hatch attached wing 8-32 screw Glue hardwood block bottom wing tap screw screw enough hold hatch place Cowl Cut After fuselage has finish-sanded time cut loose top half cowl Carefully mark line front F3 cut good saw along line Cut above crutch remove top cowl Epoxy two rear cowl hold-down blocks two front -inch plywood strips place everything dry drill holes front side screws cowl arrangement has proven work very well cowl half removed Continued page 24 August1994 19 I ii 1 Type RO Sport Scale Wingspan 76 inches Engine size/type 90-108 twostroke 120 four-stroke Number channels Four Flying weight 8-9 pounds Construction Built-up Covering/finish UltraCote Tail section framework re balsa will later covered Incidence meter being used set location dowel holes F5B six-inch-wide Vie balsa avoid seams /a doweling center marks correct spot Bottom view fuselage showing hardwood engine mounts Wing center section dowels epoxied place Fuselage sanded ready cover 20 Model Aviation t bottom fuselage tank compartment dowel holes Rear fuselage formers nger Bottom belly pan removable hatch under construction Top cowl section cut away YS 120 engine shown Framed up modelready cover SUKHO1 SU-26 H MARK 8IRIAI4 M BUVPV ic GI3RICk w WcKSONTVFULLSCRLEaRNES I- CLAIMS ThIS RUSSIRN SHIP IS ONE GREAT AIRPLINEACE F T T1A POLITICIANS 3QVALE CUDTWE WIAO Ci* LOVE AND FiXAIRPLANES NAVE BJTER T14INGS TO NZiYDO.LETSIF WE CAN GETA RIDE N IT COSEE COk-Y79ErE 6 PA-L ThIE AMGAR zAT 4 SO SFRUCE IUBLER SQ L5A CRUTCIi 7 N -7N V 7 SHEI 4z B1LS SAEPNG 1vPIcL j ELS SHT RIBS 38SPaICE 5Rb roP& BOTTOM)A S4ILSR LRMINAT AE~LSfl 5HLN PL SO -~SSPRUCE ~jVV V SPECIAL IN ThREiSFiNNR. IS 3 DIfl WI4EEL5 V POUR CYCLE ON 10 WET ENGINE USE HO TWO CICLOT FUSELAGE TOP VIEW N F-SII IR BALSA SHOOT HOSE RACIC SANE SHAPE HO FA CLUE HI PLACE AFTER TOP SALT OP NISRRHISH SHEET/ k 5 OIH MAIN WHEELS 00 BALSA SHOET F-ET flASH HO SQ RALSA CASITCH PC SQ SPRUCE OSORLES AR PLVWHOB F-B B PB BALSA ____SHEETF-SF7 PR BALSA / / LON BALSA NIEET IPSEBALSACUT TO FITB COCOPIT FLOORS SHEET TELF ST/ HOUS PAT BALSA F9 ________________________ IC SQ SALSA PC RALSAFIN RUHOER H /GUSSETBALSA TIlER MEET 11CC RALSA F-s_____RALOA S SHOOTHINOP TO I/COO HOSE / FINRUDDER\ I/NSA SPESICE-.---LW HOWEL~-- /NOTE PUSELOHE IS SEEETEO WITH jFIHRig~j I/H SQ BALSA SHzNOI&iIQWNFOOIT ICRTI CRUTCHLL ___ ITOLETY 00 SIZE 4NOTE CO IS LOCATED ~*HO FUSELAGE SIDE RETAINOR ______ F-STEffADLIPCBALM F-SBFIB 121 Hr RALSA / IIEUTOIIT IN /FIH MAYOR MAIRTIIV11 CUTHOTS OR 111 ONLY i1l OR F-IT ONKj FNO FOR FST PR BALSA SAROT PSR PR NALOH SHEET --F-AT 5/NA BALSA ONSET COTOILT IS FAT _____F-SB S/IA BHLAA SHOOT F-4T____NOYCOIN F-48F-2T F-RT HOLY RO PO PLY BOTTOM SHEET MAOIFACTURRSS CO KCDmGIPATTERT\ FIT LL PA RYS HEE FINAL HOSOMRLY-REPRHOA U FRINTO CHOLO PRODUCE H STORIlON LI RPOEIFERTIa WBA SPANPB WISH AREABOA SQ lIE AIRFOLSYMMETRICAL FUSE LENGThSI ENGINE90 ION PRO STROKE LAO FOOR STROKE WOWOTB B LBS TCPESPORT SCALE MODEL AVIATION 9IS6M NOON PLANS B UOW OOMARCO 1H5H5B LiIIIi.J ALL 040151* 0Y1 05 FSIPO ENSHE SHOWN FIT IHS 3-PH OIA BOA HOC DC PLY FRONTSN SOULSWI32 BALSA U E SACETINGLEADING CONE IS 2 ODWEL PLATElop HAD BOTTOGLAMINATIONS OF CGBALSA OCE WING PLANGALSA SOECTWING TIP ____Io — DC ELY L NII______4L __PLA*VHhK1L47zz7-____ NOTE WING IS BOLT HPOIOEDOWN YE STOCK1M BALSA WINGSHEET W-G11~t V4BALSA IA PLY PLATEVAPLYPER TUNE NBACC-IW____________________________ 1ff 1522____ W 10____ ______ Co CZIt NGTE COCA RING TO CUT IN SPARSESIGNES BY MAGH SINIAGNI NOTE ALLI~JP-I28SHED PLANG GY JOE DEMARCO can never go wrong finishing model Hobbypoxy enamel paint Superior hiding power performance make Hobbypoxy sure winner time Nobody can beat winning formula Super-strong two-part epoxy enamel Can brushed sprayed Durable flexible Wont chip crack peel Stands up racing fuels water wear Adheres iron-films woven fabric iron-on coverings Matches films mixing 16 standard colors high gloss flat finishes Mixing formula chart military colors Hobbypoxy Custom Metallizer adds superb metallic lusters just coat second coat will put miles ahead competition Hobbypoxy paint model finish couldnt easier Sukhoi/Sirianni Continued page 19 complete access engine throttle pushrod fuel lines engine plain view adjustments best part no messy fiberglass cowl paint may want cut hole bottom cowl compartment help cooling Get good in-cowl muffler set Finishing Fill nicks dents good balsa filler sand ther entire model get ready cover recommend iron-on film covering keep weight down choice Goldberg UltraCote have using UltraCote quite some time now am very satisfied results covering very easy work get really top-quality job easily goes around curves covers over itself minimum bubbles stripes stars numbers cut UltraCote material made easy complicated color scheme Flying The Sukhoi easiest models will ever fly Takeoffs very easythe wide landing gear makes excellent ground handling Very little right rudder needed takeoff light weight large size makes smooth-flying model model will stunt can think Just like full-scale plane model outstanding performer best part flying plane landings model will come quite slowly very stable low speeds Overall plane just lot fun fly Custom-made landing gear available Abell Hobby Manufacturing Co Box 22573 Billings MT 59101 Tel 406 259-4882 Sig Canopy #223 available Sig Manufacturing 40 1-7 South Front Street PO Box 816 Montezuma IA 50171-9990 odel Aviation color chip card military mixing charts copy POXY POINTERS helpful guide using Hobbypoxy products call 1-201-625-3100 See us WRAMS REALISTIC MOTION RETRACT CONTROL VALVES See us Show Lower level All valves feature exhaust speed control Toledo Show have expanded range retract control valves cover needsThese valves work standard servos door sequancing done inside valve speed control throw away troublesome restrictors NEW ATTENTION SPRING AIR OWNERS can now have inde pendant speed control up down speeds new UP5valve$289 5 NEW NEW Secondary door control valve UP4 used conjunction UP2 valve will provide control tail-wheel doors MUSTANGS secondary doors need stay open q ear down though main doors closedsuch B25 $4495 NEW 7/16 dia DOOR CYLINDERS 1 stroke 13 lb thrust metal body $2185 NEW Door cylinder 5/16 dia 1 inch stroke 8 lb thrust metal body $1900 UP1 Independent speed control & switching struts $2895 UP2Strut & door control Mustangs Door opens strut lowers door closes Door opens strut raises door closes $7465100 INCH MUSTANG RETRACTS 50 LB RATING UP3 Strut & door control valve P47 Door opens-strut lowers-Totally enclosed mechanism-all metal-i inch air cylinder-85 degre door stays open Strut raises-door closes$7465retraction Fits between ribs$579OO including UP2 valve ULTRA PRECISION Technical Services Ltd 1244 Honeysuckle Crescent Oakvi lIe OntarioL6H 2S8 Canada Phone 905 1703 Dealer inquiries welcomeAll prices US fundsShipping valves & cylinders $450
Edition: Model Aviation - 1994/08
Page Numbers: 17, 18, 19, 20, 21, 22, 23, 24
The exciting aerobatic airplane world way former National Champion Clint McHenry describes Sukhoi Su-26M McHenry compared Sukhois appearance 1937 Thompson trophy racer its sound Grumman Bearcat aerobatics world got its first look Sukhoi Hungary 1984 World Championships Soviets brought two Sukhois Hungary still relied mainly Yak 55 Two years later Soviets flew refined version Su-26M World Championships England won mens womens team titles Since time Sukhoi has become hottest plane very competitive world full-scale aerobatics Sukhoi constructed titanium alloy wing ribs main gear exhaust system Carbon fiber used main spars geared supercharged 360 HP Vedeneyev M-14 nine-cylinder radial engine performance fantastic opportunity see first two Sukhois US Oshkosh July 1989 After watching test pilot Yevgeni Frolov pit Sukhoi through wildest air show routine ever seen knew build plane Since selling price about $225000 little could afford thought model Sukhoi better suited hobby budget wanted large plane fly SuperTigre 90 engine weight 8/2-9 pounds depending what engine use prototype flew quite nicely 90 engine others have used variety engines OS 108 OS YS 120 four-strokes high power 108 120 four-strokes performance August1994 17 Closeup Russian test pilot ready another flight Canopy available Sig Manufacturing address text outstanding Whichever engine choose Sukhoi will give hours great flying CONSTRUCTION Wing Pick piece hard /s balsa cut jig Its 36 inches long tapers As /2 Pin lower 3/ square spruce spar plan Pin jig place rib 12 Pin ribs place trim necessary Pin ribs spar jig glue place Glue top spar place Add leading edge ribs Glue /s x 3/ strip trailing edge Add /32 LE sheeting rib 1 outward sheet over center area time Add /32 x 2 TE sheeting Now build other wing panel up point Cut /s slot back edge spar rib 1 will allow /s plywood dihedral brace slide through Draw 72inch line workbench guide align wing panels joining wing halves joined together upside down Lay some waxed paper center pin panels main spars exactly line Shim center section 34 inch TB rib 12 Epoxy dihedral brace securely place back main spars Glue balsa filler trailing edge Let wing dry thoroughly Epoxy /s plywood ribs lA place two ribs flush top wing rib 1 rib sets proper angle landing gear plate Epoxy landing gear plate place Take time get plate securely position important part wing stress landing gear going plate good job Drill two /8 holes front dowel plate Epoxy place add balsa ribs lB /32 bottom LB sheetingWhen dry cut opening landing gear Install landing gear four 6-32 screws blind nuts Add bottom TB sheeting Sheet top center section bottom will finished after wing fitted fuselage Attach /2 X 2 TB aileron servos paper tubes servo wires Add cap strips wingtips Sand wing set aside will need completed wing construct fuselage Tail The tail pieces constructed square balsa sheeted /16 balsa Build stab elevators fin rudder over plans used six-inch-wide As balsa sheeting using wider balsa eliminates seams Sand pieces set aside until later Fuselage The fuselage us built top bottom halves re crutch square pinned flat building board top-half fuselage formers glued Pin a spruce doublers over top view plans Add two /2 balsa formers Fl Glue F2 back Fl Use engine guide determine far back should position F3 plans show approximate position 120 four-stroke engine engine must mounted upright hardwood rails Attach F4 F5 F6 build tank compartment Add top stringer between F2 F6 Drill holes throttle pushrod remaining top formers spruce stringers between F9 Fl now glued place Make sure top stringer parallel work surface because stab sits stringers Add balsa tail posts cockpit floor top F6 F7 F8 After basic framework dry time sheet top half fuselage Using soft A2 x 4 balsa carefully sheet fuselage Make sure framework remains securely pinned workbench use aliphatic resin glue gives plenty time pin balsa sheeting top formers Lightly sand tops F9 PlO Fil Add balsa top Cut piece little oversize allow final sanding After top dry remove building board turn body over prepare build bottom half Use engine carefully measure spacing needed hardwood mounts Cut notches bottom formers F3B F5B Take time next few steps get mounts straight no side down thrust sure everything straight epoxy mounts place next steps need completed wing Take time properly aiign wing drill dowel holes F5B fuselage upside down workbench use level aiign fuselage top workbench have incidence meter step goes little easier Put wing place fuselage mark dowel locations F5B used doweling center /s doweling center metal plug has sharp point end plug fits /i hole ood front dowel plate Simply set wing saddle area 00 incidence press forward doweling center will put small mark F5B exact location holes Drill two holes F5B Remove wing 18 Model Aviation lage use long drill bit make two holes rear dowels /s plywood dihedral brace Epoxy dowels place Finish sheeting wing over landing gear plate Turn wing over add bottom center section sheeting Try wing fuselage check fit Drill holes hardwood block nylon bolts Sheet front portion fuselage same manner top Add rear bottom formers F8B F9B FlOB FliB Fl2B Add /4 stringer Plan pushrod locations before sheeting bottom section pushrods place sheet section soft 3A2 balsa Test-fit stab atop ce stringers Check level again Add plywood between stringers makes good base stab sit Drill s through plywood base dowel fin go through Add soft balsa blocks side fin sand shape wing firmly attached fuselage time build bottom belly pan removable hatch Glue H8 H6 place Set H5 front H6 place glue Add stringer between H5 H8 Cut stringer between two H6 formers remove part removable part covers landing gear Sheet section /32 balsa hatch attached wing 8-32 screw Glue hardwood block bottom wing tap screw screw enough hold hatch place Cowl Cut After fuselage has finish-sanded time cut loose top half cowl Carefully mark line front F3 cut good saw along line Cut above crutch remove top cowl Epoxy two rear cowl hold-down blocks two front -inch plywood strips place everything dry drill holes front side screws cowl arrangement has proven work very well cowl half removed Continued page 24 August1994 19 I ii 1 Type RO Sport Scale Wingspan 76 inches Engine size/type 90-108 twostroke 120 four-stroke Number channels Four Flying weight 8-9 pounds Construction Built-up Covering/finish UltraCote Tail section framework re balsa will later covered Incidence meter being used set location dowel holes F5B six-inch-wide Vie balsa avoid seams /a doweling center marks correct spot Bottom view fuselage showing hardwood engine mounts Wing center section dowels epoxied place Fuselage sanded ready cover 20 Model Aviation t bottom fuselage tank compartment dowel holes Rear fuselage formers nger Bottom belly pan removable hatch under construction Top cowl section cut away YS 120 engine shown Framed up modelready cover SUKHO1 SU-26 H MARK 8IRIAI4 M BUVPV ic GI3RICk w WcKSONTVFULLSCRLEaRNES I- CLAIMS ThIS RUSSIRN SHIP IS ONE GREAT AIRPLINEACE F T T1A POLITICIANS 3QVALE CUDTWE WIAO Ci* LOVE AND FiXAIRPLANES NAVE BJTER T14INGS TO NZiYDO.LETSIF WE CAN GETA RIDE N IT COSEE COk-Y79ErE 6 PA-L ThIE AMGAR zAT 4 SO SFRUCE IUBLER SQ L5A CRUTCIi 7 N -7N V 7 SHEI 4z B1LS SAEPNG 1vPIcL j ELS SHT RIBS 38SPaICE 5Rb roP& BOTTOM)A S4ILSR LRMINAT AE~LSfl 5HLN PL SO -~SSPRUCE ~jVV V SPECIAL IN ThREiSFiNNR. IS 3 DIfl WI4EEL5 V POUR CYCLE ON 10 WET ENGINE USE HO TWO CICLOT FUSELAGE TOP VIEW N F-SII IR BALSA SHOOT HOSE RACIC SANE SHAPE HO FA CLUE HI PLACE AFTER TOP SALT OP NISRRHISH SHEET/ k 5 OIH MAIN WHEELS 00 BALSA SHOET F-ET flASH HO SQ RALSA CASITCH PC SQ SPRUCE OSORLES AR PLVWHOB F-B B PB BALSA ____SHEETF-SF7 PR BALSA / / LON BALSA NIEET IPSEBALSACUT TO FITB COCOPIT FLOORS SHEET TELF ST/ HOUS PAT BALSA F9 ________________________ IC SQ SALSA PC RALSAFIN RUHOER H /GUSSETBALSA TIlER MEET 11CC RALSA F-s_____RALOA S SHOOTHINOP TO I/COO HOSE / FINRUDDER\ I/NSA SPESICE-.---LW HOWEL~-- /NOTE PUSELOHE IS SEEETEO WITH jFIHRig~j I/H SQ BALSA SHzNOI&iIQWNFOOIT ICRTI CRUTCHLL ___ ITOLETY 00 SIZE 4NOTE CO IS LOCATED ~*HO FUSELAGE SIDE RETAINOR ______ F-STEffADLIPCBALM F-SBFIB 121 Hr RALSA / IIEUTOIIT IN /FIH MAYOR MAIRTIIV11 CUTHOTS OR 111 ONLY i1l OR F-IT ONKj FNO FOR FST PR BALSA SAROT PSR PR NALOH SHEET --F-AT 5/NA BALSA ONSET COTOILT IS FAT _____F-SB S/IA BHLAA SHOOT F-4T____NOYCOIN F-48F-2T F-RT HOLY RO PO PLY BOTTOM SHEET MAOIFACTURRSS CO KCDmGIPATTERT\ FIT LL PA RYS HEE FINAL HOSOMRLY-REPRHOA U FRINTO CHOLO PRODUCE H STORIlON LI RPOEIFERTIa WBA SPANPB WISH AREABOA SQ lIE AIRFOLSYMMETRICAL FUSE LENGThSI ENGINE90 ION PRO STROKE LAO FOOR STROKE WOWOTB B LBS TCPESPORT SCALE MODEL AVIATION 9IS6M NOON PLANS B UOW OOMARCO 1H5H5B LiIIIi.J ALL 040151* 0Y1 05 FSIPO ENSHE SHOWN FIT IHS 3-PH OIA BOA HOC DC PLY FRONTSN SOULSWI32 BALSA U E SACETINGLEADING CONE IS 2 ODWEL PLATElop HAD BOTTOGLAMINATIONS OF CGBALSA OCE WING PLANGALSA SOECTWING TIP ____Io — DC ELY L NII______4L __PLA*VHhK1L47zz7-____ NOTE WING IS BOLT HPOIOEDOWN YE STOCK1M BALSA WINGSHEET W-G11~t V4BALSA IA PLY PLATEVAPLYPER TUNE NBACC-IW____________________________ 1ff 1522____ W 10____ ______ Co CZIt NGTE COCA RING TO CUT IN SPARSESIGNES BY MAGH SINIAGNI NOTE ALLI~JP-I28SHED PLANG GY JOE DEMARCO can never go wrong finishing model Hobbypoxy enamel paint Superior hiding power performance make Hobbypoxy sure winner time Nobody can beat winning formula Super-strong two-part epoxy enamel Can brushed sprayed Durable flexible Wont chip crack peel Stands up racing fuels water wear Adheres iron-films woven fabric iron-on coverings Matches films mixing 16 standard colors high gloss flat finishes Mixing formula chart military colors Hobbypoxy Custom Metallizer adds superb metallic lusters just coat second coat will put miles ahead competition Hobbypoxy paint model finish couldnt easier Sukhoi/Sirianni Continued page 19 complete access engine throttle pushrod fuel lines engine plain view adjustments best part no messy fiberglass cowl paint may want cut hole bottom cowl compartment help cooling Get good in-cowl muffler set Finishing Fill nicks dents good balsa filler sand ther entire model get ready cover recommend iron-on film covering keep weight down choice Goldberg UltraCote have using UltraCote quite some time now am very satisfied results covering very easy work get really top-quality job easily goes around curves covers over itself minimum bubbles stripes stars numbers cut UltraCote material made easy complicated color scheme Flying The Sukhoi easiest models will ever fly Takeoffs very easythe wide landing gear makes excellent ground handling Very little right rudder needed takeoff light weight large size makes smooth-flying model model will stunt can think Just like full-scale plane model outstanding performer best part flying plane landings model will come quite slowly very stable low speeds Overall plane just lot fun fly Custom-made landing gear available Abell Hobby Manufacturing Co Box 22573 Billings MT 59101 Tel 406 259-4882 Sig Canopy #223 available Sig Manufacturing 40 1-7 South Front Street PO Box 816 Montezuma IA 50171-9990 odel Aviation color chip card military mixing charts copy POXY POINTERS helpful guide using Hobbypoxy products call 1-201-625-3100 See us WRAMS REALISTIC MOTION RETRACT CONTROL VALVES See us Show Lower level All valves feature exhaust speed control Toledo Show have expanded range retract control valves cover needsThese valves work standard servos door sequancing done inside valve speed control throw away troublesome restrictors NEW ATTENTION SPRING AIR OWNERS can now have inde pendant speed control up down speeds new UP5valve$289 5 NEW NEW Secondary door control valve UP4 used conjunction UP2 valve will provide control tail-wheel doors MUSTANGS secondary doors need stay open q ear down though main doors closedsuch B25 $4495 NEW 7/16 dia DOOR CYLINDERS 1 stroke 13 lb thrust metal body $2185 NEW Door cylinder 5/16 dia 1 inch stroke 8 lb thrust metal body $1900 UP1 Independent speed control & switching struts $2895 UP2Strut & door control Mustangs Door opens strut lowers door closes Door opens strut raises door closes $7465100 INCH MUSTANG RETRACTS 50 LB RATING UP3 Strut & door control valve P47 Door opens-strut lowers-Totally enclosed mechanism-all metal-i inch air cylinder-85 degre door stays open Strut raises-door closes$7465retraction Fits between ribs$579OO including UP2 valve ULTRA PRECISION Technical Services Ltd 1244 Honeysuckle Crescent Oakvi lIe OntarioL6H 2S8 Canada Phone 905 1703 Dealer inquiries welcomeAll prices US fundsShipping valves & cylinders $450
Edition: Model Aviation - 1994/08
Page Numbers: 17, 18, 19, 20, 21, 22, 23, 24
The exciting aerobatic airplane world way former National Champion Clint McHenry describes Sukhoi Su-26M McHenry compared Sukhois appearance 1937 Thompson trophy racer its sound Grumman Bearcat aerobatics world got its first look Sukhoi Hungary 1984 World Championships Soviets brought two Sukhois Hungary still relied mainly Yak 55 Two years later Soviets flew refined version Su-26M World Championships England won mens womens team titles Since time Sukhoi has become hottest plane very competitive world full-scale aerobatics Sukhoi constructed titanium alloy wing ribs main gear exhaust system Carbon fiber used main spars geared supercharged 360 HP Vedeneyev M-14 nine-cylinder radial engine performance fantastic opportunity see first two Sukhois US Oshkosh July 1989 After watching test pilot Yevgeni Frolov pit Sukhoi through wildest air show routine ever seen knew build plane Since selling price about $225000 little could afford thought model Sukhoi better suited hobby budget wanted large plane fly SuperTigre 90 engine weight 8/2-9 pounds depending what engine use prototype flew quite nicely 90 engine others have used variety engines OS 108 OS YS 120 four-strokes high power 108 120 four-strokes performance August1994 17 Closeup Russian test pilot ready another flight Canopy available Sig Manufacturing address text outstanding Whichever engine choose Sukhoi will give hours great flying CONSTRUCTION Wing Pick piece hard /s balsa cut jig Its 36 inches long tapers As /2 Pin lower 3/ square spruce spar plan Pin jig place rib 12 Pin ribs place trim necessary Pin ribs spar jig glue place Glue top spar place Add leading edge ribs Glue /s x 3/ strip trailing edge Add /32 LE sheeting rib 1 outward sheet over center area time Add /32 x 2 TE sheeting Now build other wing panel up point Cut /s slot back edge spar rib 1 will allow /s plywood dihedral brace slide through Draw 72inch line workbench guide align wing panels joining wing halves joined together upside down Lay some waxed paper center pin panels main spars exactly line Shim center section 34 inch TB rib 12 Epoxy dihedral brace securely place back main spars Glue balsa filler trailing edge Let wing dry thoroughly Epoxy /s plywood ribs lA place two ribs flush top wing rib 1 rib sets proper angle landing gear plate Epoxy landing gear plate place Take time get plate securely position important part wing stress landing gear going plate good job Drill two /8 holes front dowel plate Epoxy place add balsa ribs lB /32 bottom LB sheetingWhen dry cut opening landing gear Install landing gear four 6-32 screws blind nuts Add bottom TB sheeting Sheet top center section bottom will finished after wing fitted fuselage Attach /2 X 2 TB aileron servos paper tubes servo wires Add cap strips wingtips Sand wing set aside will need completed wing construct fuselage Tail The tail pieces constructed square balsa sheeted /16 balsa Build stab elevators fin rudder over plans used six-inch-wide As balsa sheeting using wider balsa eliminates seams Sand pieces set aside until later Fuselage The fuselage us built top bottom halves re crutch square pinned flat building board top-half fuselage formers glued Pin a spruce doublers over top view plans Add two /2 balsa formers Fl Glue F2 back Fl Use engine guide determine far back should position F3 plans show approximate position 120 four-stroke engine engine must mounted upright hardwood rails Attach F4 F5 F6 build tank compartment Add top stringer between F2 F6 Drill holes throttle pushrod remaining top formers spruce stringers between F9 Fl now glued place Make sure top stringer parallel work surface because stab sits stringers Add balsa tail posts cockpit floor top F6 F7 F8 After basic framework dry time sheet top half fuselage Using soft A2 x 4 balsa carefully sheet fuselage Make sure framework remains securely pinned workbench use aliphatic resin glue gives plenty time pin balsa sheeting top formers Lightly sand tops F9 PlO Fil Add balsa top Cut piece little oversize allow final sanding After top dry remove building board turn body over prepare build bottom half Use engine carefully measure spacing needed hardwood mounts Cut notches bottom formers F3B F5B Take time next few steps get mounts straight no side down thrust sure everything straight epoxy mounts place next steps need completed wing Take time properly aiign wing drill dowel holes F5B fuselage upside down workbench use level aiign fuselage top workbench have incidence meter step goes little easier Put wing place fuselage mark dowel locations F5B used doweling center /s doweling center metal plug has sharp point end plug fits /i hole ood front dowel plate Simply set wing saddle area 00 incidence press forward doweling center will put small mark F5B exact location holes Drill two holes F5B Remove wing 18 Model Aviation lage use long drill bit make two holes rear dowels /s plywood dihedral brace Epoxy dowels place Finish sheeting wing over landing gear plate Turn wing over add bottom center section sheeting Try wing fuselage check fit Drill holes hardwood block nylon bolts Sheet front portion fuselage same manner top Add rear bottom formers F8B F9B FlOB FliB Fl2B Add /4 stringer Plan pushrod locations before sheeting bottom section pushrods place sheet section soft 3A2 balsa Test-fit stab atop ce stringers Check level again Add plywood between stringers makes good base stab sit Drill s through plywood base dowel fin go through Add soft balsa blocks side fin sand shape wing firmly attached fuselage time build bottom belly pan removable hatch Glue H8 H6 place Set H5 front H6 place glue Add stringer between H5 H8 Cut stringer between two H6 formers remove part removable part covers landing gear Sheet section /32 balsa hatch attached wing 8-32 screw Glue hardwood block bottom wing tap screw screw enough hold hatch place Cowl Cut After fuselage has finish-sanded time cut loose top half cowl Carefully mark line front F3 cut good saw along line Cut above crutch remove top cowl Epoxy two rear cowl hold-down blocks two front -inch plywood strips place everything dry drill holes front side screws cowl arrangement has proven work very well cowl half removed Continued page 24 August1994 19 I ii 1 Type RO Sport Scale Wingspan 76 inches Engine size/type 90-108 twostroke 120 four-stroke Number channels Four Flying weight 8-9 pounds Construction Built-up Covering/finish UltraCote Tail section framework re balsa will later covered Incidence meter being used set location dowel holes F5B six-inch-wide Vie balsa avoid seams /a doweling center marks correct spot Bottom view fuselage showing hardwood engine mounts Wing center section dowels epoxied place Fuselage sanded ready cover 20 Model Aviation t bottom fuselage tank compartment dowel holes Rear fuselage formers nger Bottom belly pan removable hatch under construction Top cowl section cut away YS 120 engine shown Framed up modelready cover SUKHO1 SU-26 H MARK 8IRIAI4 M BUVPV ic GI3RICk w WcKSONTVFULLSCRLEaRNES I- CLAIMS ThIS RUSSIRN SHIP IS ONE GREAT AIRPLINEACE F T T1A POLITICIANS 3QVALE CUDTWE WIAO Ci* LOVE AND FiXAIRPLANES NAVE BJTER T14INGS TO NZiYDO.LETSIF WE CAN GETA RIDE N IT COSEE COk-Y79ErE 6 PA-L ThIE AMGAR zAT 4 SO SFRUCE IUBLER SQ L5A CRUTCIi 7 N -7N V 7 SHEI 4z B1LS SAEPNG 1vPIcL j ELS SHT RIBS 38SPaICE 5Rb roP& BOTTOM)A S4ILSR LRMINAT AE~LSfl 5HLN PL SO -~SSPRUCE ~jVV V SPECIAL IN ThREiSFiNNR. IS 3 DIfl WI4EEL5 V POUR CYCLE ON 10 WET ENGINE USE HO TWO CICLOT FUSELAGE TOP VIEW N F-SII IR BALSA SHOOT HOSE RACIC SANE SHAPE HO FA CLUE HI PLACE AFTER TOP SALT OP NISRRHISH SHEET/ k 5 OIH MAIN WHEELS 00 BALSA SHOET F-ET flASH HO SQ RALSA CASITCH PC SQ SPRUCE OSORLES AR PLVWHOB F-B B PB BALSA ____SHEETF-SF7 PR BALSA / / LON BALSA NIEET IPSEBALSACUT TO FITB COCOPIT FLOORS SHEET TELF ST/ HOUS PAT BALSA F9 ________________________ IC SQ SALSA PC RALSAFIN RUHOER H /GUSSETBALSA TIlER MEET 11CC RALSA F-s_____RALOA S SHOOTHINOP TO I/COO HOSE / FINRUDDER\ I/NSA SPESICE-.---LW HOWEL~-- /NOTE PUSELOHE IS SEEETEO WITH jFIHRig~j I/H SQ BALSA SHzNOI&iIQWNFOOIT ICRTI CRUTCHLL ___ ITOLETY 00 SIZE 4NOTE CO IS LOCATED ~*HO FUSELAGE SIDE RETAINOR ______ F-STEffADLIPCBALM F-SBFIB 121 Hr RALSA / IIEUTOIIT IN /FIH MAYOR MAIRTIIV11 CUTHOTS OR 111 ONLY i1l OR F-IT ONKj FNO FOR FST PR BALSA SAROT PSR PR NALOH SHEET --F-AT 5/NA BALSA ONSET COTOILT IS FAT _____F-SB S/IA BHLAA SHOOT F-4T____NOYCOIN F-48F-2T F-RT HOLY RO PO PLY BOTTOM SHEET MAOIFACTURRSS CO KCDmGIPATTERT\ FIT LL PA RYS HEE FINAL HOSOMRLY-REPRHOA U FRINTO CHOLO PRODUCE H STORIlON LI RPOEIFERTIa WBA SPANPB WISH AREABOA SQ lIE AIRFOLSYMMETRICAL FUSE LENGThSI ENGINE90 ION PRO STROKE LAO FOOR STROKE WOWOTB B LBS TCPESPORT SCALE MODEL AVIATION 9IS6M NOON PLANS B UOW OOMARCO 1H5H5B LiIIIi.J ALL 040151* 0Y1 05 FSIPO ENSHE SHOWN FIT IHS 3-PH OIA BOA HOC DC PLY FRONTSN SOULSWI32 BALSA U E SACETINGLEADING CONE IS 2 ODWEL PLATElop HAD BOTTOGLAMINATIONS OF CGBALSA OCE WING PLANGALSA SOECTWING TIP ____Io — DC ELY L NII______4L __PLA*VHhK1L47zz7-____ NOTE WING IS BOLT HPOIOEDOWN YE STOCK1M BALSA WINGSHEET W-G11~t V4BALSA IA PLY PLATEVAPLYPER TUNE NBACC-IW____________________________ 1ff 1522____ W 10____ ______ Co CZIt NGTE COCA RING TO CUT IN SPARSESIGNES BY MAGH SINIAGNI NOTE ALLI~JP-I28SHED PLANG GY JOE DEMARCO can never go wrong finishing model Hobbypoxy enamel paint Superior hiding power performance make Hobbypoxy sure winner time Nobody can beat winning formula Super-strong two-part epoxy enamel Can brushed sprayed Durable flexible Wont chip crack peel Stands up racing fuels water wear Adheres iron-films woven fabric iron-on coverings Matches films mixing 16 standard colors high gloss flat finishes Mixing formula chart military colors Hobbypoxy Custom Metallizer adds superb metallic lusters just coat second coat will put miles ahead competition Hobbypoxy paint model finish couldnt easier Sukhoi/Sirianni Continued page 19 complete access engine throttle pushrod fuel lines engine plain view adjustments best part no messy fiberglass cowl paint may want cut hole bottom cowl compartment help cooling Get good in-cowl muffler set Finishing Fill nicks dents good balsa filler sand ther entire model get ready cover recommend iron-on film covering keep weight down choice Goldberg UltraCote have using UltraCote quite some time now am very satisfied results covering very easy work get really top-quality job easily goes around curves covers over itself minimum bubbles stripes stars numbers cut UltraCote material made easy complicated color scheme Flying The Sukhoi easiest models will ever fly Takeoffs very easythe wide landing gear makes excellent ground handling Very little right rudder needed takeoff light weight large size makes smooth-flying model model will stunt can think Just like full-scale plane model outstanding performer best part flying plane landings model will come quite slowly very stable low speeds Overall plane just lot fun fly Custom-made landing gear available Abell Hobby Manufacturing Co Box 22573 Billings MT 59101 Tel 406 259-4882 Sig Canopy #223 available Sig Manufacturing 40 1-7 South Front Street PO Box 816 Montezuma IA 50171-9990 odel Aviation color chip card military mixing charts copy POXY POINTERS helpful guide using Hobbypoxy products call 1-201-625-3100 See us WRAMS REALISTIC MOTION RETRACT CONTROL VALVES See us Show Lower level All valves feature exhaust speed control Toledo Show have expanded range retract control valves cover needsThese valves work standard servos door sequancing done inside valve speed control throw away troublesome restrictors NEW ATTENTION SPRING AIR OWNERS can now have inde pendant speed control up down speeds new UP5valve$289 5 NEW NEW Secondary door control valve UP4 used conjunction UP2 valve will provide control tail-wheel doors MUSTANGS secondary doors need stay open q ear down though main doors closedsuch B25 $4495 NEW 7/16 dia DOOR CYLINDERS 1 stroke 13 lb thrust metal body $2185 NEW Door cylinder 5/16 dia 1 inch stroke 8 lb thrust metal body $1900 UP1 Independent speed control & switching struts $2895 UP2Strut & door control Mustangs Door opens strut lowers door closes Door opens strut raises door closes $7465100 INCH MUSTANG RETRACTS 50 LB RATING UP3 Strut & door control valve P47 Door opens-strut lowers-Totally enclosed mechanism-all metal-i inch air cylinder-85 degre door stays open Strut raises-door closes$7465retraction Fits between ribs$579OO including UP2 valve ULTRA PRECISION Technical Services Ltd 1244 Honeysuckle Crescent Oakvi lIe OntarioL6H 2S8 Canada Phone 905 1703 Dealer inquiries welcomeAll prices US fundsShipping valves & cylinders $450
Edition: Model Aviation - 1994/08
Page Numbers: 17, 18, 19, 20, 21, 22, 23, 24
The exciting aerobatic airplane world way former National Champion Clint McHenry describes Sukhoi Su-26M McHenry compared Sukhois appearance 1937 Thompson trophy racer its sound Grumman Bearcat aerobatics world got its first look Sukhoi Hungary 1984 World Championships Soviets brought two Sukhois Hungary still relied mainly Yak 55 Two years later Soviets flew refined version Su-26M World Championships England won mens womens team titles Since time Sukhoi has become hottest plane very competitive world full-scale aerobatics Sukhoi constructed titanium alloy wing ribs main gear exhaust system Carbon fiber used main spars geared supercharged 360 HP Vedeneyev M-14 nine-cylinder radial engine performance fantastic opportunity see first two Sukhois US Oshkosh July 1989 After watching test pilot Yevgeni Frolov pit Sukhoi through wildest air show routine ever seen knew build plane Since selling price about $225000 little could afford thought model Sukhoi better suited hobby budget wanted large plane fly SuperTigre 90 engine weight 8/2-9 pounds depending what engine use prototype flew quite nicely 90 engine others have used variety engines OS 108 OS YS 120 four-strokes high power 108 120 four-strokes performance August1994 17 Closeup Russian test pilot ready another flight Canopy available Sig Manufacturing address text outstanding Whichever engine choose Sukhoi will give hours great flying CONSTRUCTION Wing Pick piece hard /s balsa cut jig Its 36 inches long tapers As /2 Pin lower 3/ square spruce spar plan Pin jig place rib 12 Pin ribs place trim necessary Pin ribs spar jig glue place Glue top spar place Add leading edge ribs Glue /s x 3/ strip trailing edge Add /32 LE sheeting rib 1 outward sheet over center area time Add /32 x 2 TE sheeting Now build other wing panel up point Cut /s slot back edge spar rib 1 will allow /s plywood dihedral brace slide through Draw 72inch line workbench guide align wing panels joining wing halves joined together upside down Lay some waxed paper center pin panels main spars exactly line Shim center section 34 inch TB rib 12 Epoxy dihedral brace securely place back main spars Glue balsa filler trailing edge Let wing dry thoroughly Epoxy /s plywood ribs lA place two ribs flush top wing rib 1 rib sets proper angle landing gear plate Epoxy landing gear plate place Take time get plate securely position important part wing stress landing gear going plate good job Drill two /8 holes front dowel plate Epoxy place add balsa ribs lB /32 bottom LB sheetingWhen dry cut opening landing gear Install landing gear four 6-32 screws blind nuts Add bottom TB sheeting Sheet top center section bottom will finished after wing fitted fuselage Attach /2 X 2 TB aileron servos paper tubes servo wires Add cap strips wingtips Sand wing set aside will need completed wing construct fuselage Tail The tail pieces constructed square balsa sheeted /16 balsa Build stab elevators fin rudder over plans used six-inch-wide As balsa sheeting using wider balsa eliminates seams Sand pieces set aside until later Fuselage The fuselage us built top bottom halves re crutch square pinned flat building board top-half fuselage formers glued Pin a spruce doublers over top view plans Add two /2 balsa formers Fl Glue F2 back Fl Use engine guide determine far back should position F3 plans show approximate position 120 four-stroke engine engine must mounted upright hardwood rails Attach F4 F5 F6 build tank compartment Add top stringer between F2 F6 Drill holes throttle pushrod remaining top formers spruce stringers between F9 Fl now glued place Make sure top stringer parallel work surface because stab sits stringers Add balsa tail posts cockpit floor top F6 F7 F8 After basic framework dry time sheet top half fuselage Using soft A2 x 4 balsa carefully sheet fuselage Make sure framework remains securely pinned workbench use aliphatic resin glue gives plenty time pin balsa sheeting top formers Lightly sand tops F9 PlO Fil Add balsa top Cut piece little oversize allow final sanding After top dry remove building board turn body over prepare build bottom half Use engine carefully measure spacing needed hardwood mounts Cut notches bottom formers F3B F5B Take time next few steps get mounts straight no side down thrust sure everything straight epoxy mounts place next steps need completed wing Take time properly aiign wing drill dowel holes F5B fuselage upside down workbench use level aiign fuselage top workbench have incidence meter step goes little easier Put wing place fuselage mark dowel locations F5B used doweling center /s doweling center metal plug has sharp point end plug fits /i hole ood front dowel plate Simply set wing saddle area 00 incidence press forward doweling center will put small mark F5B exact location holes Drill two holes F5B Remove wing 18 Model Aviation lage use long drill bit make two holes rear dowels /s plywood dihedral brace Epoxy dowels place Finish sheeting wing over landing gear plate Turn wing over add bottom center section sheeting Try wing fuselage check fit Drill holes hardwood block nylon bolts Sheet front portion fuselage same manner top Add rear bottom formers F8B F9B FlOB FliB Fl2B Add /4 stringer Plan pushrod locations before sheeting bottom section pushrods place sheet section soft 3A2 balsa Test-fit stab atop ce stringers Check level again Add plywood between stringers makes good base stab sit Drill s through plywood base dowel fin go through Add soft balsa blocks side fin sand shape wing firmly attached fuselage time build bottom belly pan removable hatch Glue H8 H6 place Set H5 front H6 place glue Add stringer between H5 H8 Cut stringer between two H6 formers remove part removable part covers landing gear Sheet section /32 balsa hatch attached wing 8-32 screw Glue hardwood block bottom wing tap screw screw enough hold hatch place Cowl Cut After fuselage has finish-sanded time cut loose top half cowl Carefully mark line front F3 cut good saw along line Cut above crutch remove top cowl Epoxy two rear cowl hold-down blocks two front -inch plywood strips place everything dry drill holes front side screws cowl arrangement has proven work very well cowl half removed Continued page 24 August1994 19 I ii 1 Type RO Sport Scale Wingspan 76 inches Engine size/type 90-108 twostroke 120 four-stroke Number channels Four Flying weight 8-9 pounds Construction Built-up Covering/finish UltraCote Tail section framework re balsa will later covered Incidence meter being used set location dowel holes F5B six-inch-wide Vie balsa avoid seams /a doweling center marks correct spot Bottom view fuselage showing hardwood engine mounts Wing center section dowels epoxied place Fuselage sanded ready cover 20 Model Aviation t bottom fuselage tank compartment dowel holes Rear fuselage formers nger Bottom belly pan removable hatch under construction Top cowl section cut away YS 120 engine shown Framed up modelready cover SUKHO1 SU-26 H MARK 8IRIAI4 M BUVPV ic GI3RICk w WcKSONTVFULLSCRLEaRNES I- 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IS 3 DIfl WI4EEL5 V POUR CYCLE ON 10 WET ENGINE USE HO TWO CICLOT FUSELAGE TOP VIEW N F-SII IR BALSA SHOOT HOSE RACIC SANE SHAPE HO FA CLUE HI PLACE AFTER TOP SALT OP NISRRHISH SHEET/ k 5 OIH MAIN WHEELS 00 BALSA SHOET F-ET flASH HO SQ RALSA CASITCH PC SQ SPRUCE OSORLES AR PLVWHOB F-B B PB BALSA ____SHEETF-SF7 PR BALSA / / LON BALSA NIEET IPSEBALSACUT TO FITB COCOPIT FLOORS SHEET TELF ST/ HOUS PAT BALSA F9 ________________________ IC SQ SALSA PC RALSAFIN RUHOER H /GUSSETBALSA TIlER MEET 11CC RALSA F-s_____RALOA S SHOOTHINOP TO I/COO HOSE / FINRUDDER\ I/NSA SPESICE-.---LW HOWEL~-- /NOTE PUSELOHE IS SEEETEO WITH jFIHRig~j I/H SQ BALSA SHzNOI&iIQWNFOOIT ICRTI CRUTCHLL ___ ITOLETY 00 SIZE 4NOTE CO IS LOCATED ~*HO FUSELAGE SIDE RETAINOR ______ F-STEffADLIPCBALM F-SBFIB 121 Hr RALSA / IIEUTOIIT IN /FIH MAYOR MAIRTIIV11 CUTHOTS OR 111 ONLY i1l OR F-IT ONKj FNO FOR FST PR BALSA SAROT PSR PR NALOH SHEET --F-AT 5/NA BALSA ONSET COTOILT IS FAT _____F-SB S/IA BHLAA SHOOT F-4T____NOYCOIN F-48F-2T F-RT HOLY RO PO PLY BOTTOM SHEET MAOIFACTURRSS CO KCDmGIPATTERT\ FIT LL PA RYS HEE FINAL HOSOMRLY-REPRHOA U FRINTO CHOLO PRODUCE H STORIlON LI RPOEIFERTIa WBA SPANPB WISH AREABOA SQ lIE AIRFOLSYMMETRICAL FUSE LENGThSI ENGINE90 ION PRO STROKE LAO FOOR STROKE WOWOTB B LBS TCPESPORT SCALE MODEL AVIATION 9IS6M NOON PLANS B UOW OOMARCO 1H5H5B LiIIIi.J ALL 040151* 0Y1 05 FSIPO ENSHE SHOWN FIT IHS 3-PH OIA BOA HOC DC PLY FRONTSN SOULSWI32 BALSA U E SACETINGLEADING CONE IS 2 ODWEL PLATElop HAD BOTTOGLAMINATIONS OF CGBALSA OCE WING PLANGALSA SOECTWING TIP ____Io — DC ELY L NII______4L __PLA*VHhK1L47zz7-____ NOTE WING IS BOLT HPOIOEDOWN YE STOCK1M BALSA WINGSHEET W-G11~t V4BALSA IA PLY PLATEVAPLYPER TUNE NBACC-IW____________________________ 1ff 1522____ W 10____ ______ Co CZIt NGTE COCA RING TO CUT IN SPARSESIGNES BY MAGH SINIAGNI NOTE ALLI~JP-I28SHED PLANG GY JOE DEMARCO can never go wrong finishing model Hobbypoxy enamel paint Superior hiding power performance make Hobbypoxy sure winner time Nobody can beat winning formula Super-strong two-part epoxy enamel Can brushed sprayed Durable flexible Wont chip crack peel Stands up racing fuels water wear Adheres iron-films woven fabric iron-on coverings Matches films mixing 16 standard colors high gloss flat finishes Mixing formula chart military colors Hobbypoxy Custom Metallizer adds superb metallic lusters just coat second coat will put miles ahead competition Hobbypoxy paint model finish couldnt easier Sukhoi/Sirianni Continued page 19 complete access engine throttle pushrod fuel lines engine plain view adjustments best part no messy fiberglass cowl paint may want cut hole bottom cowl compartment help cooling Get good in-cowl muffler set Finishing Fill nicks dents good balsa filler sand ther entire model get ready cover recommend iron-on film covering keep weight down choice Goldberg UltraCote have using UltraCote quite some time now am very satisfied results covering very easy work get really top-quality job easily goes around curves covers over itself minimum bubbles stripes stars numbers cut UltraCote material made easy complicated color scheme Flying The Sukhoi easiest models will ever fly Takeoffs very easythe wide landing gear makes excellent ground handling Very little right rudder needed takeoff light weight large size makes smooth-flying model model will stunt can think Just like full-scale plane model outstanding performer best part flying plane landings model will come quite slowly very stable low speeds Overall plane just lot fun fly Custom-made landing gear available Abell Hobby Manufacturing Co Box 22573 Billings MT 59101 Tel 406 259-4882 Sig Canopy #223 available Sig Manufacturing 40 1-7 South Front Street PO Box 816 Montezuma IA 50171-9990 odel Aviation color chip card military mixing charts copy POXY POINTERS helpful guide using Hobbypoxy products call 1-201-625-3100 See us WRAMS REALISTIC MOTION RETRACT CONTROL VALVES See us Show Lower level All valves feature exhaust speed control Toledo Show have expanded range retract control valves cover needsThese valves work standard servos door sequancing done inside valve speed control throw away troublesome restrictors NEW ATTENTION SPRING AIR OWNERS can now have inde pendant speed control up down speeds new UP5valve$289 5 NEW NEW Secondary door control valve UP4 used conjunction UP2 valve will provide control tail-wheel doors MUSTANGS secondary doors need stay open q ear down though main doors closedsuch B25 $4495 NEW 7/16 dia DOOR CYLINDERS 1 stroke 13 lb thrust metal body $2185 NEW Door cylinder 5/16 dia 1 inch stroke 8 lb thrust metal body $1900 UP1 Independent speed control & switching struts $2895 UP2Strut & door control Mustangs Door opens strut lowers door closes Door opens strut raises door closes $7465100 INCH MUSTANG RETRACTS 50 LB RATING UP3 Strut & door control valve P47 Door opens-strut lowers-Totally enclosed mechanism-all metal-i inch air cylinder-85 degre door stays open Strut raises-door closes$7465retraction Fits between ribs$579OO including UP2 valve ULTRA PRECISION Technical Services Ltd 1244 Honeysuckle Crescent Oakvi lIe OntarioL6H 2S8 Canada Phone 905 1703 Dealer inquiries welcomeAll prices US fundsShipping valves & cylinders $450