NO OCR TEXT NO OCR TEXT Holding closely possible scale outlines drew up plans 94-in wingspan provided 1300 sq wing area figured would suit Quadra 50 Zenoah 0-62 engine retractable landing gear intentional deviation scale shorten nose length Otherwise model would probably have come out nose-heavy keep project relatively simple left off turbine exhaust stacks air scoop beneath cowl can add details choose Likewise decided flaps unnecessary because anticipated wing loading interested sport aircraft handles well aircraft thats precisely Scale three versions Valmet trainer L-70 L-8OTP L-9OTP would make good Scale projects intend draw up L-70 plans myself near future its barn door wing fixed landing gear shorter nosed piston engine L-70 would easier model build build Send stamped self-addressed envelope two stamps copies three three-view Left Bottoms-up view tail surfaces showing tail skid stabilizer elevators separate pushrods Right Close-up tail feathers model sitting its field stand Note sweptback fin rudder stabilizer elevators counterbalanced elevator 32 Model Aviation Having helped builder Lance Schneider author mold large clear plastic canopy Nick Ziroll Jr Sr now offer Item commercially fiberglass cowl available T&D Fiberglass Specialties Retractable landing gear shock-absorbing struts Impact Engineering add scale appearance Zenoah G-62 engine pushes craft Pattern league 20 x 10 prop spun aluminum spinner both Zinger two-seat cockpit has room two pas senger seats rear Designing model View radio installation Zenoah G-62 engine B&B muffler ImpacT engineering retractable landing gear Note retract gear air pressure filler fitting fuselage bottom next engine elevators have separate servo/pushrod installations Y-adapter used receiver Other servos throttle rudder nose gear steering I z BPLSfl 3HEET OVER OTh DICK S4RPOLz----~I ~auuruu EUWEW PLflSTIC CRNOP9 PILPbLEI FROM NICK ZROII MODE-i-S~7 S4LE -7 7JQBRLSR1141S OR -s I- SUPtO N RECIcL IrSPKING i BRLS SIDE5&O1TOM Ac FIREWOLL 4O op 5O ENGINE- OVER FORM CORE 4z HPRD4o PLY RISS FIBERGL5 COWL Fi T&D FI5ERGLPEE 0 0 drawings few photographs address 32 Alameda Ct Shrewsbury NJ 07702 Redigo uses familiar construction techniques well proven several earlier projects experience foam-cored wing tail surfaces quickest easiest way go scratch-built models size foam cores save great deal design time weight comes reasonable figure doubt built-up rib spar sheet structure sufficient strength could achieved comparable weight fuselage configuration its straight tapered tail section also lends itself use foam-cored upper portions wasnt difficult model design As noted except nose length exact scale outlines followed closely possible lighter weight choice among available large glow engines could probably keep nose length scale proportions scratch-built cowl shape should fairly easy duplicate fiberglass cowl however available T&D Fiberglass Specialties 38624 Mount Kisco Sterling Heights MI 48310 telephone 313 9782512 full-scale Rcdigo uses modified NACA 63-2 18 airfoil root modified NACA 63-4 12 tip root set 30 positive incidence wing has built-in 30 washout twist drawings possession judged airfoils too unusual appearance RC airplane Instead drew up nonscale fully symmetrical 16%-thick wing airfoil section similar others have achieved good aerobatic overall flying characteristics no service cutting foam cores available area recommend Aerosmith Model Aviation RD #1 Box 290 Athens NY 12015 telephone 518 945-1091 large clear plastic canopy presents single difficult challenge scratchbuilder undertaking project Ul PLEWBOB IREALL I2i REINFORCE FIREWALL i1i1I 11111 _____________ 217~ liii Locate PAILS TO SUIT RETRACTS USEDHARDWOOD TRIANGLE SroCK FIBERGLASS COWL AVAIL ABLE FROM TAO FIBERGLASS SPECIALTIES 3*820 MOUNT KISCO STERLING HEIGHTS MI BASID L12 SPINNER / 1'i JI 7 j4A 7i-~--ZENOAK GB USED IN PROTOTTPE ANT 00 OR ROtC ENGINE SHRUG 0 BE SGITADLB PCASIIC TANG NICK ZIROLI 20 EDGAR 0 SMITH TOWN FUEL TANK -BArn 1 -I PLT BALSA BLOCK VBA 3/4 HA NO WOOD RETRACT MOUNTING STRUT LOCATION WILL ART OCPINOING ON RETRACTS I OSEG LOCATE FARTHER FORWARD IF POSSIBLE FIXED OR RE big over 24 long 11 wide about 6 deep isnt easy find canopy vacuum-forming capability scope lucky Well-known modelers Nick Ziroli Jr Sr helped us out vacuum-forming equipment Lance carved plug pine boards glued together quite task Zirolis used pull few canopies us worry Zirolis now offering canopy commercially Details available Nick Ziroli Models 29 Edgar Drive Smithtown NY 11787 some doubts about using retractable landing gear concerned about added weight gear mechanisms need supporting structure worried about reliability retracts Also cost some money Lance builder decision thought clean aircraft layout would look good fly well wheels pulled up retracts way go found several types commercially available retracts thought suitable Dave Platt Impact Engineering designs both looked good finally used Impact gear along shock-absorbing struts same company scale appearance gear appear well designed 34 Model Aviation wing has turned upside down show retract mounting wheel well openings wing mounting thin aluminum gear doors secured silicone rubber Two ny lon bolts heavy plywood tab leading edge provide wing mounting third recess leading edge foreground nose gear retract forward-swept wing leading edge created slightly modifying standard foam-core cut ting techniques main panel cut conventionally notched accept separately cut forward extension piece foam core parts giued together sheeted usuai Full-Size Plans AvailableSee Page 196 S CLOTH AND EPOXY Ii _______ 7/H--I.4 111iiI1 IIrJAr BALSA SKEET ON FOAM LOBED TAIL SURFACES IB SODA RE IB BALSA,r BALSA DYERBLOCKS COCKPIT FLOORFDA/A CORE FUSELABE TOP BLOCKS AC BALSA ~-- // II -___- /tf CCII VER MD BALSASTOCKlAB BALSA DOUBLER I/IC PLY OSUOL IRSlAB PLr FINSBOTTOM IACDOTO HERE NYLON BOLTS USE rWO ELEVATOR SERVOS UB BALSAAB PLYWOODWITH SEPARATE LINKAGE VALMET L9OTP WINO SADDLE PIECESWINO MOUNT/NO PLATETO EACH SURFACE RED/GO TN/NUSE 0000 MUFFLER ALUMINUM0ON LABOC NOISY ENGINES DEAR DOORS OF THE FINNISO TRAINER AIRCRAFT DES/UNtO AND DRAWN BY VAL DICK SARPOLUS 0I2545B2 BB ID II IV SKEET OF 2 rugged enough job drawback forward location actuating cylinder nose gear unit Lance machined away portion some cylinder fins Zenoah G-62 provide clearance retract mechanism dont think will affect engine cant say retracts have completely trouble-free far thats probably because first production sets few bugs ran being may already have worked out Lance right plane looks flies great wheels tucked up however want save money simplify project go fixed gear prototype came out 221/2 lb anotwithstanding Redigo acrobaticis straightforward uses fewest parts wing loading almost 40 ox per sq ftand fast sleek look Stable yetpossible havent scratch-built Thats bit high models size canagile model flies like Pattern aircraftplans before assured fly higher wing loading still handlewith 0-62relatively easy project comfortably first flight awesome Lance covered design MonoKotegood pilot Redigos performanceWing foam core wing requires replicating color scheme theimpressed everyone Im convincedpreliminary step section wing root full-scale test aircraft Lance plans give athat Quadra 50 less powerfulis cut Out replaced separately cut future Redigo striking appearanceengine would deliver reasonable scaleforward extension piece provide very bright air show-type finish thitperformance 0-62 turns plane adistinctive swept-forward leading edge decidedly nonscaletigerangle new configuration similar Weve found Zenoah G-62 athe P-Si Mustang wing planform great engine Brand new turned 20 x io onstruction youve created leading edge Zinger 8400 rpm ground weforward sweep complete structure expected good flight performance WeTypical sheeted foam-and-balsa/plywoodyou would foam core wing werent disappointed Its large sizebuilt-tip construction used structure re sheeting wing insert several April 1992 35 RC Valmet Redigo Type Sport Scale Wingspan 94 Recommended engine size type Zenoah G-62 40-50cc engine would adequate Number RC channels recommended Five six using optional flaps Expected flying weight 221/2 lb Type construction Built-up foam-and-balsa/plywood Type coveringltlnish recommended MonoKote plywood ribs hardwood stub spars foam cores rceeivc support retract mechanisms Adjust location ribs mounting rails and/or spars stilt retracts being used Cut /8-in plywood rib inserts oversize mark trim hush fit foam cores Using hot wire cutting tools very sharp modeling knifc cut grooves loam spars retract mounting rails dihedral joiner Finally cut holes pneumatic lines course youve already built foam core wings model retracts may have worked out own method supporting retract mechanisms use fixed landing gear suggest wire gear legs least 1/4 installed typical grooved hardwood gear blocks secured plywood ribs Make stire grooved block extends center wing location 1/4-in plywood wing joiner should used Add shock-absorbing struts desired plywood ribs gear mounting provisions have glued foam coics youre ready sheet wing cores top bottom use /32 mediumweight balsa core sheeting edge gluing necessary achieve retltlired width As longtime user Dave I3rowns Southern Sorghum contact cement adhering sheeting foam cores know ean expect perfect results time Other builders successfully use epoxy glue thinly applied 3M 77 spray contact cement Sig Manufacturing products Trim off leading edges block sand square Add oversized balsa 0/HEONAL S k2 MVER EACH TIP I/R PLYWC CENTER RI BALSA BLOCK WING TIPS /__________________________ SCALE AILERON eCOiNlTERBALANCESHEET COMPLETE ICONFIGURATIONTHEN CUT AILEROI ANO FINISM ECUE PO 1f4 PLT WING MOUNT BULKHEAO /If4PLT RETRACT MOUNTING SUPPORT / / / I / // PLT FIREWALL leadine edge strip plane sand shape wing tips made shaping balsa blocks Since large light blocks difficult obtain glued smaller blocks together needed size Cut aileron sections sheeted wing panels trim down allow balsa edging sand edges shape Bevel aileron leading edges preparation hinging Install hinges either along centerline prototype along top edge Use large sturdy free-moving hinges dont skimp luantity choose include flaps cut appropriate sections wing finish off did ailerons 1-linge flaps along lower edge Cut recesses lower wing surface aileron servo mounting Glue mounts wing use piece /4-in steel rod aileron servo extension cables heating its end pushing through foam core fiom root aileron servo location Removable thin plywood hatches 36 Model Aviation Doing hard way dont have Starting 11 layers pine glued together author builder Lance Schneider carved pine block shape use Nick Ziroli Jr Sr plug vacuum forming Redigos large plastic canopy x I/B Builder Lance Schneider services large model Byrons Craft Cuddler Full-Size Plans AvailableSee Page 196 SHEET WING WITH 5J5 BALSA BGALSA LEADING EDGE I4 PLY WING MOUNTING KEY WRAP WING CENTER JOINT WITH HEAVY FIBERGLASS CLOTH AND EPOXY_____ _______FOAM CORE SECTIONFOR RETRACT WHEEL CLEARANCE F I/B PLYWOOD WING JOINER I/41 I/5 HARDWOOD TOP AND BOTTOM RECESS SPARS INTO FOAM CORE ORE TEMPLA TES S/BXJJE HARDWOOD RETRACT MOUNTING/ lit RAILS- TO SUIT/ RETRACTS USED 1 INSTALL AILERON SERVOS IN WING / WITH ACCESS HATCHES ON BOTTOM SURFACE - I/BPLY RIBS SET INTO FOAM CORE SCALE FLAP HINGE LINE IF DESIRED CORE TEMPLATES IBPL T WING RIBS CUT OVERSIZE TRIM FLUSH WITH FOAM CORE CUT OUT AS NEEDED FOR RETRACTS 7 7 7 HEADS WRAP CENTER SECTION WITH F GLASS CLOTH AND EPOXY FOAM REAR TOP FUSELAGE TEMPLATES S/52 BALSA SHEETING I/4 PLYWOOD WING JOINER __________RtDIG 0 FOAM FORWAHO TOP FUSELAGE TEMPLATES 5 '\ III 1 BALSAII LEADING EDGE I\ I / II Si / S / SHEET S OF can bC installed over scrvo areas positioning wing used /4jfl plywood wing mounting key leading edgc rather customary dowcls key reinforced plywood ribs near foamcore root like method because contact area thc fusciage bulkhead retains wing mount can trimmed shimmed necessaly achieve correct wing-to-fuselage fit sure plywood key extends barterinch forward leading edge since rests recess fuselage wing mount bulkhead Butt glue wing halves using plywood joiner plenty epoxy Wrap center joint heavy fiberglass cloth epoxy Fuselage Select lirm-to-hard balsa Is-in sides edge gluing splicing wood necessary sixe youll need Install /16 plywood doublers balsa wing saddle pieces stab saddle doublers balsa corner strips both fuselage sides Add bulkheads using plan top fuselage view guide assembly Youll need bevel edge /2-in plywood firewall lit properly curved sides Add /4-in plywood wing bolt plate pull tail end together install icar bulkheads keeping fuselage straight sides taper rear straight line wing trailing edge position tail ensuring straightcut foam top block will fit correctly balsa cockpit Iloor strengthens stiffens fuselage assembly Reinforce firewall installation heavy fiberglass cloth epoxy installing over hardwood trianll e stock behind firewall also install several small screws through sides firewall extra security against vibration large engine Sheet trim foam core top pieces /3 balsa glue place Before sheeting bottom cut holes rear bulkheads elevator rudder pushrods Its best postpone adding bottom planking until after tail surfaces have installed wing has fitted fuselage Fit wing fuselage adjusting fit wing mounting key bulkhead necessary Drill through wing trailing edge mounting bolts Tap plywood fuselage wing motint accept /42 nylon bolts youre usin enine other Zenoah G-62 may necessary install plywood spacers behind enine mount order properly locate propeller Ii xed andi uig gear attach heavy-duty nose strut plywood firewall retracts cut firewall necessary install hardwood mOuntino Till retract mechanism between firewall adjacent bulkhead Depending engine retracts used may have cut away some cooling fins engine cylinder head provide clearance retract unit nose wheel retracted completely enclosed fuselage portion protrudes bottom aircraft continued page 146 April 1992 37 CROSS SECTION cZZFIIzz FOAM STAB CORE TEMPLATES I/B BALSA BULKHEADS Wth Wells Cargo Behind. Never Look Back WELLS CARGO Rolling Hanger like makes sense serious RC model pilot has dependable weather-proof transport has convenient safe storage Bird wings spare props radio gear organized ready go Buzzin anytime weatherman says OK Cloud Dancer unit 12 foot ToteWagon model Weve got Wells Cargo just right 6 feet up 3 YR LIMITED WARRANTY PROGRAM FACTORY SERVICE POINTS A TX UTAH US WIDE DEALER SERVICE NETWORK BALL HITCH TRAILERS 6-32 GOOSE NECKS 0 1-800-348-7553 FOR LITERATURE PRICES DEALER & PLANT LOCATIONS SINCE S CARGO PO BOX flS-982ELKHART IN 46515-0728 Valmet Redigo/Sarpolus Continued page 37 fiberglass cowl trimmed necessary clear engine cylinder exhaust landing gear Tap fuselage sides threaded nylon bolts used mounting cowl wing bolted fuselage build up lower section glue wing bottom shape blend rear fuselage section Similarly shape balsa block contour bottom forward fuselage glue bottom wing SAY YOU SAW IT IN MODEL AVIATION Trim large plastic canopy fit secure small screws lower edges fuselage side Add simulated interior cockpit details suit Since Redigo set up two-person side-by-side training room two rear passenger seats up four figures could used extra realism Tail surfaces Sheet tail surface cores /32 balsa Join horizontal stabilizer panels reinforcing joint fiberglass cloth epoxy Cut surface apart along hinge lines allowing space added balsa edges Finish off edges install hinges glue stabilizer fuselage Glue vertical fin stabilizerand top fuselage piece rudder linkage can handled torque tube arrangement extending through stab since hookup pushrod will internal sure make secure Shape balsa blocks installed aft fuselage top side behind fin blocks place make three small fixed vertical fins attach fuselage bottom Control surfaces Recess control surfaces accept t/4-in plywood pieces mounting nylon horns ailerons elevators Epoxy plywood mounts control surfaces attach horns small screws recommend using larger 4-40 threaded rods devises linkages Use fiberglass tube pushrods elevator linkages Make fuselage servo mounting 1/4-in plywood elevators actuated separate servos its own pushrod allows pushrods perfectly straight Since pushrods cross over within fuselage elevator servos must mounted about I8 higher other prevent pushrods rubbing together Use aileron extension cables make Y-harness two aileron servos mounted wing Another Y-harness required two elevator servos used 1 200-mAh battery pack wrapped foam rubber positioned behind wing trailing edge its weight required balance Landing gear wheels engine fuel system appearance sake cut main landing gear doors thin aluminum affixed retract struts silicone adhesive may add landing gear doors nose gear well Robarts scale wheels look good model adequately support Redigos weight however wheels require Robarts interna[ loam tire ~doublers Order direct manufacturer used 16-oz fuel tank Theres room second 1 6-oz tank smoke system desired ignition cutoff switch mounted forward firewall switch SAVE YOUR FIELD SNUF-LER muffler low cost easy Install lightweight sound reducing muffler no performance penalty answer AMA muffler rule suggestions saving flying fields Meets AMA muffler rule suggestions 3 10 decibels quieter stock muffler No power lose posaibie 300500 RPM increase Improves engine idle s better fuel economy Easily attached 25-108 atock mufflers Heat corrosion resistant Black E coat finish No special adapters required Weighs 35 oza Fits ASP BRAT ENYA FOX HP IRVINE K & B 05 MAX ROYAL YS SUPER TIGRE mufflers available hobby shop ORDER DIRECT immediate shipment Check MO Visa MC cooSEND 25i STAMP accepted Add 5250 UPS $200 COD t% sales tasFOR ADDITIONAL INFO Calif residentAND ITEC CATALOG 146 Model Aviation GO FLYING WITH COMPLETE ROLLING HANGER LIKE THIS NEW FAI TAN RUBBER 114 3/16 1/8 thick 1 lb box $1475 inciudes4oL Slick Lubel $1375 mo lube k costs *1751 10 lb box- $11000 ius Deliveredl Postpaid US vie UPS Cal res add 6% sales tax Made USA Slow cure consiatant quaifty Ask PAl-TAN 89190 catalog hate 100FF kitel CROCKET HOOKS~ NOW MADE BY SEND*150FA Model Supply FOR CATALOGnoneocEcsosboCARSON 0090745 nEc 213 830-8935 handle protrudes slightly through fiberglass cowl propeller Zinger 20 x 10 used Zinger 31/2in spun aluminum spinner Cut hole through cowl easy access carburetor Install air pressure filler valve retracts fuselage bottom nose section used B&B muffler Zenoah G-62 cutting cowl clearance around muffler Unfortunately noise level still pretty high dont know really effective commercially available mufflers fit G-62 add-on units such JTec Snuffler could hung externally below fuselage Wouldnt look good unless flying field location can tolerate noise might have quiet down Zenoah somehow Covering finishing duplicated color scheme original Redigo test aircraftgray overall contrasting areas black red yellow blue look scale yet somewhat understated As noted next Redigo will probably receive bright air-show aerobatic-type finish greater visual excitement large airplane large engine exact Scale comes pretty close Using retracts adds complexity amount scale detailing incorporated up builder Basically however can count airframe thats quick easy build fast aerobatic flight Redigo well suited sport flier wants large model hot performance Award Continued page 51 Frank wife Carmen enjoy leisurely retired life Northridge California have won additional fame annual reports detailing travels around country over world reports have become collector items friends privileged receive Looking back highlights very full life Frank recalls special pride early 1930s full-scale glider pilot pilots license signed Orville Wright Approximately 60 years later noted special distinction the NAA ceremony underscores pertinence NAA award 0 Rnaliy An Engine Mount tern Wont Shake Rattle Roll fly model planes dont have tell theres whole lotta shakin goin now theres something cando about Sullivan Flex Mount System Its engine mounting sys tem has specially designed rubber isolators absorb enine vibration reduce noise andi limit wear tear mode thats Flex-Mount comes aluminum adaptor plate makes easy mount 40 60 90 two-cycle engines firewall strap mount beam mounting four-cyde engines So dont jitterbug Thik dealer Sullivan Flex-Mount engine mount j ing system thought rock roll 7 PRODUCTS would never die Box51668alomorMD21224 Getting Better Ideas OtT Ground RC Aerobatics/Van Putte Continued page 71 Well tough dont favor increasing two-cycle limit above 61 because airplane size would go up stay competitive have enough trouble getting LA-l Ford Probe already personal favorite way promote twocycle vs four-cycle equity restrict fourcycle engine displacement 80 90 two-cycle technology seems about topped out cant keep engines together very long now replacing something other hand four-cycle engine technology still upsweep current 120 four-cycle restriction disparity between two-cycle four-cycle engines going get worse severe restriction four-cycle engine displacement reasonable Eric closed almost impossible legislate either morality economy competitive event However good judging think likely pilot flies better sequence will win contest cases agree anyone would like see complete copy Erics letter Id glad provide youll send SASE Prodigy would like send message ID CMFBO2B l 1992 147
Edition: Model Aviation - 1992/04
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 146, 147
NO OCR TEXT NO OCR TEXT Holding closely possible scale outlines drew up plans 94-in wingspan provided 1300 sq wing area figured would suit Quadra 50 Zenoah 0-62 engine retractable landing gear intentional deviation scale shorten nose length Otherwise model would probably have come out nose-heavy keep project relatively simple left off turbine exhaust stacks air scoop beneath cowl can add details choose Likewise decided flaps unnecessary because anticipated wing loading interested sport aircraft handles well aircraft thats precisely Scale three versions Valmet trainer L-70 L-8OTP L-9OTP would make good Scale projects intend draw up L-70 plans myself near future its barn door wing fixed landing gear shorter nosed piston engine L-70 would easier model build build Send stamped self-addressed envelope two stamps copies three three-view Left Bottoms-up view tail surfaces showing tail skid stabilizer elevators separate pushrods Right Close-up tail feathers model sitting its field stand Note sweptback fin rudder stabilizer elevators counterbalanced elevator 32 Model Aviation Having helped builder Lance Schneider author mold large clear plastic canopy Nick Ziroll Jr Sr now offer Item commercially fiberglass cowl available T&D Fiberglass Specialties Retractable landing gear shock-absorbing struts Impact Engineering add scale appearance Zenoah G-62 engine pushes craft Pattern league 20 x 10 prop spun aluminum spinner both Zinger two-seat cockpit has room two pas senger seats rear Designing model View radio installation Zenoah G-62 engine B&B muffler ImpacT engineering retractable landing gear Note retract gear air pressure filler fitting fuselage bottom next engine elevators have separate servo/pushrod installations Y-adapter used receiver Other servos throttle rudder nose gear steering I z BPLSfl 3HEET OVER OTh DICK S4RPOLz----~I ~auuruu EUWEW PLflSTIC CRNOP9 PILPbLEI FROM NICK ZROII MODE-i-S~7 S4LE -7 7JQBRLSR1141S OR -s I- SUPtO N RECIcL IrSPKING i BRLS SIDE5&O1TOM Ac FIREWOLL 4O op 5O ENGINE- OVER FORM CORE 4z HPRD4o PLY RISS FIBERGL5 COWL Fi T&D FI5ERGLPEE 0 0 drawings few photographs address 32 Alameda Ct Shrewsbury NJ 07702 Redigo uses familiar construction techniques well proven several earlier projects experience foam-cored wing tail surfaces quickest easiest way go scratch-built models size foam cores save great deal design time weight comes reasonable figure doubt built-up rib spar sheet structure sufficient strength could achieved comparable weight fuselage configuration its straight tapered tail section also lends itself use foam-cored upper portions wasnt difficult model design As noted except nose length exact scale outlines followed closely possible lighter weight choice among available large glow engines could probably keep nose length scale proportions scratch-built cowl shape should fairly easy duplicate fiberglass cowl however available T&D Fiberglass Specialties 38624 Mount Kisco Sterling Heights MI 48310 telephone 313 9782512 full-scale Rcdigo uses modified NACA 63-2 18 airfoil root modified NACA 63-4 12 tip root set 30 positive incidence wing has built-in 30 washout twist drawings possession judged airfoils too unusual appearance RC airplane Instead drew up nonscale fully symmetrical 16%-thick wing airfoil section similar others have achieved good aerobatic overall flying characteristics no service cutting foam cores available area recommend Aerosmith Model Aviation RD #1 Box 290 Athens NY 12015 telephone 518 945-1091 large clear plastic canopy presents single difficult challenge scratchbuilder undertaking project Ul PLEWBOB IREALL I2i REINFORCE FIREWALL i1i1I 11111 _____________ 217~ liii Locate PAILS TO SUIT RETRACTS USEDHARDWOOD TRIANGLE SroCK FIBERGLASS COWL AVAIL ABLE FROM TAO FIBERGLASS SPECIALTIES 3*820 MOUNT KISCO STERLING HEIGHTS MI BASID L12 SPINNER / 1'i JI 7 j4A 7i-~--ZENOAK GB USED IN PROTOTTPE ANT 00 OR ROtC ENGINE SHRUG 0 BE SGITADLB PCASIIC TANG NICK ZIROLI 20 EDGAR 0 SMITH TOWN FUEL TANK -BArn 1 -I PLT BALSA BLOCK VBA 3/4 HA NO WOOD RETRACT MOUNTING STRUT LOCATION WILL ART OCPINOING ON RETRACTS I OSEG LOCATE FARTHER FORWARD IF POSSIBLE FIXED OR RE big over 24 long 11 wide about 6 deep isnt easy find canopy vacuum-forming capability scope lucky Well-known modelers Nick Ziroli Jr Sr helped us out vacuum-forming equipment Lance carved plug pine boards glued together quite task Zirolis used pull few canopies us worry Zirolis now offering canopy commercially Details available Nick Ziroli Models 29 Edgar Drive Smithtown NY 11787 some doubts about using retractable landing gear concerned about added weight gear mechanisms need supporting structure worried about reliability retracts Also cost some money Lance builder decision thought clean aircraft layout would look good fly well wheels pulled up retracts way go found several types commercially available retracts thought suitable Dave Platt Impact Engineering designs both looked good finally used Impact gear along shock-absorbing struts same company scale appearance gear appear well designed 34 Model Aviation wing has turned upside down show retract mounting wheel well openings wing mounting thin aluminum gear doors secured silicone rubber Two ny lon bolts heavy plywood tab leading edge provide wing mounting third recess leading edge foreground nose gear retract forward-swept wing leading edge created slightly modifying standard foam-core cut ting techniques main panel cut conventionally notched accept separately cut forward extension piece foam core parts giued together sheeted usuai Full-Size Plans AvailableSee Page 196 S CLOTH AND EPOXY Ii _______ 7/H--I.4 111iiI1 IIrJAr BALSA SKEET ON FOAM LOBED TAIL SURFACES IB SODA RE IB BALSA,r BALSA DYERBLOCKS COCKPIT FLOORFDA/A CORE FUSELABE TOP BLOCKS AC BALSA ~-- // II -___- /tf CCII VER MD BALSASTOCKlAB BALSA DOUBLER I/IC PLY OSUOL IRSlAB PLr FINSBOTTOM IACDOTO HERE NYLON BOLTS USE rWO ELEVATOR SERVOS UB BALSAAB PLYWOODWITH SEPARATE LINKAGE VALMET L9OTP WINO SADDLE PIECESWINO MOUNT/NO PLATETO EACH SURFACE RED/GO TN/NUSE 0000 MUFFLER ALUMINUM0ON LABOC NOISY ENGINES DEAR DOORS OF THE FINNISO TRAINER AIRCRAFT DES/UNtO AND DRAWN BY VAL DICK SARPOLUS 0I2545B2 BB ID II IV SKEET OF 2 rugged enough job drawback forward location actuating cylinder nose gear unit Lance machined away portion some cylinder fins Zenoah G-62 provide clearance retract mechanism dont think will affect engine cant say retracts have completely trouble-free far thats probably because first production sets few bugs ran being may already have worked out Lance right plane looks flies great wheels tucked up however want save money simplify project go fixed gear prototype came out 221/2 lb anotwithstanding Redigo acrobaticis straightforward uses fewest parts wing loading almost 40 ox per sq ftand fast sleek look Stable yetpossible havent scratch-built Thats bit high models size canagile model flies like Pattern aircraftplans before assured fly higher wing loading still handlewith 0-62relatively easy project comfortably first flight awesome Lance covered design MonoKotegood pilot Redigos performanceWing foam core wing requires replicating color scheme theimpressed everyone Im convincedpreliminary step section wing root full-scale test aircraft Lance plans give athat Quadra 50 less powerfulis cut Out replaced separately cut future Redigo striking appearanceengine would deliver reasonable scaleforward extension piece provide very bright air show-type finish thitperformance 0-62 turns plane adistinctive swept-forward leading edge decidedly nonscaletigerangle new configuration similar Weve found Zenoah G-62 athe P-Si Mustang wing planform great engine Brand new turned 20 x io onstruction youve created leading edge Zinger 8400 rpm ground weforward sweep complete structure expected good flight performance WeTypical sheeted foam-and-balsa/plywoodyou would foam core wing werent disappointed Its large sizebuilt-tip construction used structure re sheeting wing insert several April 1992 35 RC Valmet Redigo Type Sport Scale Wingspan 94 Recommended engine size type Zenoah G-62 40-50cc engine would adequate Number RC channels recommended Five six using optional flaps Expected flying weight 221/2 lb Type construction Built-up foam-and-balsa/plywood Type coveringltlnish recommended MonoKote plywood ribs hardwood stub spars foam cores rceeivc support retract mechanisms Adjust location ribs mounting rails and/or spars stilt retracts being used Cut /8-in plywood rib inserts oversize mark trim hush fit foam cores Using hot wire cutting tools very sharp modeling knifc cut grooves loam spars retract mounting rails dihedral joiner Finally cut holes pneumatic lines course youve already built foam core wings model retracts may have worked out own method supporting retract mechanisms use fixed landing gear suggest wire gear legs least 1/4 installed typical grooved hardwood gear blocks secured plywood ribs Make stire grooved block extends center wing location 1/4-in plywood wing joiner should used Add shock-absorbing struts desired plywood ribs gear mounting provisions have glued foam coics youre ready sheet wing cores top bottom use /32 mediumweight balsa core sheeting edge gluing necessary achieve retltlired width As longtime user Dave I3rowns Southern Sorghum contact cement adhering sheeting foam cores know ean expect perfect results time Other builders successfully use epoxy glue thinly applied 3M 77 spray contact cement Sig Manufacturing products Trim off leading edges block sand square Add oversized balsa 0/HEONAL S k2 MVER EACH TIP I/R PLYWC CENTER RI BALSA BLOCK WING TIPS /__________________________ SCALE AILERON eCOiNlTERBALANCESHEET COMPLETE ICONFIGURATIONTHEN CUT AILEROI ANO FINISM ECUE PO 1f4 PLT WING MOUNT BULKHEAO /If4PLT RETRACT MOUNTING SUPPORT / / / I / // PLT FIREWALL leadine edge strip plane sand shape wing tips made shaping balsa blocks Since large light blocks difficult obtain glued smaller blocks together needed size Cut aileron sections sheeted wing panels trim down allow balsa edging sand edges shape Bevel aileron leading edges preparation hinging Install hinges either along centerline prototype along top edge Use large sturdy free-moving hinges dont skimp luantity choose include flaps cut appropriate sections wing finish off did ailerons 1-linge flaps along lower edge Cut recesses lower wing surface aileron servo mounting Glue mounts wing use piece /4-in steel rod aileron servo extension cables heating its end pushing through foam core fiom root aileron servo location Removable thin plywood hatches 36 Model Aviation Doing hard way dont have Starting 11 layers pine glued together author builder Lance Schneider carved pine block shape use Nick Ziroli Jr Sr plug vacuum forming Redigos large plastic canopy x I/B Builder Lance Schneider services large model Byrons Craft Cuddler Full-Size Plans AvailableSee Page 196 SHEET WING WITH 5J5 BALSA BGALSA LEADING EDGE I4 PLY WING MOUNTING KEY WRAP WING CENTER JOINT WITH HEAVY FIBERGLASS CLOTH AND EPOXY_____ _______FOAM CORE SECTIONFOR RETRACT WHEEL CLEARANCE F I/B PLYWOOD WING JOINER I/41 I/5 HARDWOOD TOP AND BOTTOM RECESS SPARS INTO FOAM CORE ORE TEMPLA TES S/BXJJE HARDWOOD RETRACT MOUNTING/ lit RAILS- TO SUIT/ RETRACTS USED 1 INSTALL AILERON SERVOS IN WING / WITH ACCESS HATCHES ON BOTTOM SURFACE - I/BPLY RIBS SET INTO FOAM CORE SCALE FLAP HINGE LINE IF DESIRED CORE TEMPLATES IBPL T WING RIBS CUT OVERSIZE TRIM FLUSH WITH FOAM CORE CUT OUT AS NEEDED FOR RETRACTS 7 7 7 HEADS WRAP CENTER SECTION WITH F GLASS CLOTH AND EPOXY FOAM REAR TOP FUSELAGE TEMPLATES S/52 BALSA SHEETING I/4 PLYWOOD WING JOINER __________RtDIG 0 FOAM FORWAHO TOP FUSELAGE TEMPLATES 5 '\ III 1 BALSAII LEADING EDGE I\ I / II Si / S / SHEET S OF can bC installed over scrvo areas positioning wing used /4jfl plywood wing mounting key leading edgc rather customary dowcls key reinforced plywood ribs near foamcore root like method because contact area thc fusciage bulkhead retains wing mount can trimmed shimmed necessaly achieve correct wing-to-fuselage fit sure plywood key extends barterinch forward leading edge since rests recess fuselage wing mount bulkhead Butt glue wing halves using plywood joiner plenty epoxy Wrap center joint heavy fiberglass cloth epoxy Fuselage Select lirm-to-hard balsa Is-in sides edge gluing splicing wood necessary sixe youll need Install /16 plywood doublers balsa wing saddle pieces stab saddle doublers balsa corner strips both fuselage sides Add bulkheads using plan top fuselage view guide assembly Youll need bevel edge /2-in plywood firewall lit properly curved sides Add /4-in plywood wing bolt plate pull tail end together install icar bulkheads keeping fuselage straight sides taper rear straight line wing trailing edge position tail ensuring straightcut foam top block will fit correctly balsa cockpit Iloor strengthens stiffens fuselage assembly Reinforce firewall installation heavy fiberglass cloth epoxy installing over hardwood trianll e stock behind firewall also install several small screws through sides firewall extra security against vibration large engine Sheet trim foam core top pieces /3 balsa glue place Before sheeting bottom cut holes rear bulkheads elevator rudder pushrods Its best postpone adding bottom planking until after tail surfaces have installed wing has fitted fuselage Fit wing fuselage adjusting fit wing mounting key bulkhead necessary Drill through wing trailing edge mounting bolts Tap plywood fuselage wing motint accept /42 nylon bolts youre usin enine other Zenoah G-62 may necessary install plywood spacers behind enine mount order properly locate propeller Ii xed andi uig gear attach heavy-duty nose strut plywood firewall retracts cut firewall necessary install hardwood mOuntino Till retract mechanism between firewall adjacent bulkhead Depending engine retracts used may have cut away some cooling fins engine cylinder head provide clearance retract unit nose wheel retracted completely enclosed fuselage portion protrudes bottom aircraft continued page 146 April 1992 37 CROSS SECTION cZZFIIzz FOAM STAB CORE TEMPLATES I/B BALSA BULKHEADS Wth Wells Cargo Behind. Never Look Back WELLS CARGO Rolling Hanger like makes sense serious RC model pilot has dependable weather-proof transport has convenient safe storage Bird wings spare props radio gear organized ready go Buzzin anytime weatherman says OK Cloud Dancer unit 12 foot ToteWagon model Weve got Wells Cargo just right 6 feet up 3 YR LIMITED WARRANTY PROGRAM FACTORY SERVICE POINTS A TX UTAH US WIDE DEALER SERVICE NETWORK BALL HITCH TRAILERS 6-32 GOOSE NECKS 0 1-800-348-7553 FOR LITERATURE PRICES DEALER & PLANT LOCATIONS SINCE S CARGO PO BOX flS-982ELKHART IN 46515-0728 Valmet Redigo/Sarpolus Continued page 37 fiberglass cowl trimmed necessary clear engine cylinder exhaust landing gear Tap fuselage sides threaded nylon bolts used mounting cowl wing bolted fuselage build up lower section glue wing bottom shape blend rear fuselage section Similarly shape balsa block contour bottom forward fuselage glue bottom wing SAY YOU SAW IT IN MODEL AVIATION Trim large plastic canopy fit secure small screws lower edges fuselage side Add simulated interior cockpit details suit Since Redigo set up two-person side-by-side training room two rear passenger seats up four figures could used extra realism Tail surfaces Sheet tail surface cores /32 balsa Join horizontal stabilizer panels reinforcing joint fiberglass cloth epoxy Cut surface apart along hinge lines allowing space added balsa edges Finish off edges install hinges glue stabilizer fuselage Glue vertical fin stabilizerand top fuselage piece rudder linkage can handled torque tube arrangement extending through stab since hookup pushrod will internal sure make secure Shape balsa blocks installed aft fuselage top side behind fin blocks place make three small fixed vertical fins attach fuselage bottom Control surfaces Recess control surfaces accept t/4-in plywood pieces mounting nylon horns ailerons elevators Epoxy plywood mounts control surfaces attach horns small screws recommend using larger 4-40 threaded rods devises linkages Use fiberglass tube pushrods elevator linkages Make fuselage servo mounting 1/4-in plywood elevators actuated separate servos its own pushrod allows pushrods perfectly straight Since pushrods cross over within fuselage elevator servos must mounted about I8 higher other prevent pushrods rubbing together Use aileron extension cables make Y-harness two aileron servos mounted wing Another Y-harness required two elevator servos used 1 200-mAh battery pack wrapped foam rubber positioned behind wing trailing edge its weight required balance Landing gear wheels engine fuel system appearance sake cut main landing gear doors thin aluminum affixed retract struts silicone adhesive may add landing gear doors nose gear well Robarts scale wheels look good model adequately support Redigos weight however wheels require Robarts interna[ loam tire ~doublers Order direct manufacturer used 16-oz fuel tank Theres room second 1 6-oz tank smoke system desired ignition cutoff switch mounted forward firewall switch SAVE YOUR FIELD SNUF-LER muffler low cost easy Install lightweight sound reducing muffler no performance penalty answer AMA muffler rule suggestions saving flying fields Meets AMA muffler rule suggestions 3 10 decibels quieter stock muffler No power lose posaibie 300500 RPM increase Improves engine idle s better fuel economy Easily attached 25-108 atock mufflers Heat corrosion resistant Black E coat finish No special adapters required Weighs 35 oza Fits ASP BRAT ENYA FOX HP IRVINE K & B 05 MAX ROYAL YS SUPER TIGRE mufflers available hobby shop ORDER DIRECT immediate shipment Check MO Visa MC cooSEND 25i STAMP accepted Add 5250 UPS $200 COD t% sales tasFOR ADDITIONAL INFO Calif residentAND ITEC CATALOG 146 Model Aviation GO FLYING WITH COMPLETE ROLLING HANGER LIKE THIS NEW FAI TAN RUBBER 114 3/16 1/8 thick 1 lb box $1475 inciudes4oL Slick Lubel $1375 mo lube k costs *1751 10 lb box- $11000 ius Deliveredl Postpaid US vie UPS Cal res add 6% sales tax Made USA Slow cure consiatant quaifty Ask PAl-TAN 89190 catalog hate 100FF kitel CROCKET HOOKS~ NOW MADE BY SEND*150FA Model Supply FOR CATALOGnoneocEcsosboCARSON 0090745 nEc 213 830-8935 handle protrudes slightly through fiberglass cowl propeller Zinger 20 x 10 used Zinger 31/2in spun aluminum spinner Cut hole through cowl easy access carburetor Install air pressure filler valve retracts fuselage bottom nose section used B&B muffler Zenoah G-62 cutting cowl clearance around muffler Unfortunately noise level still pretty high dont know really effective commercially available mufflers fit G-62 add-on units such JTec Snuffler could hung externally below fuselage Wouldnt look good unless flying field location can tolerate noise might have quiet down Zenoah somehow Covering finishing duplicated color scheme original Redigo test aircraftgray overall contrasting areas black red yellow blue look scale yet somewhat understated As noted next Redigo will probably receive bright air-show aerobatic-type finish greater visual excitement large airplane large engine exact Scale comes pretty close Using retracts adds complexity amount scale detailing incorporated up builder Basically however can count airframe thats quick easy build fast aerobatic flight Redigo well suited sport flier wants large model hot performance Award Continued page 51 Frank wife Carmen enjoy leisurely retired life Northridge California have won additional fame annual reports detailing travels around country over world reports have become collector items friends privileged receive Looking back highlights very full life Frank recalls special pride early 1930s full-scale glider pilot pilots license signed Orville Wright Approximately 60 years later noted special distinction the NAA ceremony underscores pertinence NAA award 0 Rnaliy An Engine Mount tern Wont Shake Rattle Roll fly model planes dont have tell theres whole lotta shakin goin now theres something cando about Sullivan Flex Mount System Its engine mounting sys tem has specially designed rubber isolators absorb enine vibration reduce noise andi limit wear tear mode thats Flex-Mount comes aluminum adaptor plate makes easy mount 40 60 90 two-cycle engines firewall strap mount beam mounting four-cyde engines So dont jitterbug Thik dealer Sullivan Flex-Mount engine mount j ing system thought rock roll 7 PRODUCTS would never die Box51668alomorMD21224 Getting Better Ideas OtT Ground RC Aerobatics/Van Putte Continued page 71 Well tough dont favor increasing two-cycle limit above 61 because airplane size would go up stay competitive have enough trouble getting LA-l Ford Probe already personal favorite way promote twocycle vs four-cycle equity restrict fourcycle engine displacement 80 90 two-cycle technology seems about topped out cant keep engines together very long now replacing something other hand four-cycle engine technology still upsweep current 120 four-cycle restriction disparity between two-cycle four-cycle engines going get worse severe restriction four-cycle engine displacement reasonable Eric closed almost impossible legislate either morality economy competitive event However good judging think likely pilot flies better sequence will win contest cases agree anyone would like see complete copy Erics letter Id glad provide youll send SASE Prodigy would like send message ID CMFBO2B l 1992 147
Edition: Model Aviation - 1992/04
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 146, 147
NO OCR TEXT NO OCR TEXT Holding closely possible scale outlines drew up plans 94-in wingspan provided 1300 sq wing area figured would suit Quadra 50 Zenoah 0-62 engine retractable landing gear intentional deviation scale shorten nose length Otherwise model would probably have come out nose-heavy keep project relatively simple left off turbine exhaust stacks air scoop beneath cowl can add details choose Likewise decided flaps unnecessary because anticipated wing loading interested sport aircraft handles well aircraft thats precisely Scale three versions Valmet trainer L-70 L-8OTP L-9OTP would make good Scale projects intend draw up L-70 plans myself near future its barn door wing fixed landing gear shorter nosed piston engine L-70 would easier model build build Send stamped self-addressed envelope two stamps copies three three-view Left Bottoms-up view tail surfaces showing tail skid stabilizer elevators separate pushrods Right Close-up tail feathers model sitting its field stand Note sweptback fin rudder stabilizer elevators counterbalanced elevator 32 Model Aviation Having helped builder Lance Schneider author mold large clear plastic canopy Nick Ziroll Jr Sr now offer Item commercially fiberglass cowl available T&D Fiberglass Specialties Retractable landing gear shock-absorbing struts Impact Engineering add scale appearance Zenoah G-62 engine pushes craft Pattern league 20 x 10 prop spun aluminum spinner both Zinger two-seat cockpit has room two pas senger seats rear Designing model View radio installation Zenoah G-62 engine B&B muffler ImpacT engineering retractable landing gear Note retract gear air pressure filler fitting fuselage bottom next engine elevators have separate servo/pushrod installations Y-adapter used receiver Other servos throttle rudder nose gear steering I z BPLSfl 3HEET OVER OTh DICK S4RPOLz----~I ~auuruu EUWEW PLflSTIC CRNOP9 PILPbLEI FROM NICK ZROII MODE-i-S~7 S4LE -7 7JQBRLSR1141S OR -s I- SUPtO N RECIcL IrSPKING i BRLS SIDE5&O1TOM Ac FIREWOLL 4O op 5O ENGINE- OVER FORM CORE 4z HPRD4o PLY RISS FIBERGL5 COWL Fi T&D FI5ERGLPEE 0 0 drawings few photographs address 32 Alameda Ct Shrewsbury NJ 07702 Redigo uses familiar construction techniques well proven several earlier projects experience foam-cored wing tail surfaces quickest easiest way go scratch-built models size foam cores save great deal design time weight comes reasonable figure doubt built-up rib spar sheet structure sufficient strength could achieved comparable weight fuselage configuration its straight tapered tail section also lends itself use foam-cored upper portions wasnt difficult model design As noted except nose length exact scale outlines followed closely possible lighter weight choice among available large glow engines could probably keep nose length scale proportions scratch-built cowl shape should fairly easy duplicate fiberglass cowl however available T&D Fiberglass Specialties 38624 Mount Kisco Sterling Heights MI 48310 telephone 313 9782512 full-scale Rcdigo uses modified NACA 63-2 18 airfoil root modified NACA 63-4 12 tip root set 30 positive incidence wing has built-in 30 washout twist drawings possession judged airfoils too unusual appearance RC airplane Instead drew up nonscale fully symmetrical 16%-thick wing airfoil section similar others have achieved good aerobatic overall flying characteristics no service cutting foam cores available area recommend Aerosmith Model Aviation RD #1 Box 290 Athens NY 12015 telephone 518 945-1091 large clear plastic canopy presents single difficult challenge scratchbuilder undertaking project Ul PLEWBOB IREALL I2i REINFORCE FIREWALL i1i1I 11111 _____________ 217~ liii Locate PAILS TO SUIT RETRACTS USEDHARDWOOD TRIANGLE SroCK FIBERGLASS COWL AVAIL ABLE FROM TAO FIBERGLASS SPECIALTIES 3*820 MOUNT KISCO STERLING HEIGHTS MI BASID L12 SPINNER / 1'i JI 7 j4A 7i-~--ZENOAK GB USED IN PROTOTTPE ANT 00 OR ROtC ENGINE SHRUG 0 BE SGITADLB PCASIIC TANG NICK ZIROLI 20 EDGAR 0 SMITH TOWN FUEL TANK -BArn 1 -I PLT BALSA BLOCK VBA 3/4 HA NO WOOD RETRACT MOUNTING STRUT LOCATION WILL ART OCPINOING ON RETRACTS I OSEG LOCATE FARTHER FORWARD IF POSSIBLE FIXED OR RE big over 24 long 11 wide about 6 deep isnt easy find canopy vacuum-forming capability scope lucky Well-known modelers Nick Ziroli Jr Sr helped us out vacuum-forming equipment Lance carved plug pine boards glued together quite task Zirolis used pull few canopies us worry Zirolis now offering canopy commercially Details available Nick Ziroli Models 29 Edgar Drive Smithtown NY 11787 some doubts about using retractable landing gear concerned about added weight gear mechanisms need supporting structure worried about reliability retracts Also cost some money Lance builder decision thought clean aircraft layout would look good fly well wheels pulled up retracts way go found several types commercially available retracts thought suitable Dave Platt Impact Engineering designs both looked good finally used Impact gear along shock-absorbing struts same company scale appearance gear appear well designed 34 Model Aviation wing has turned upside down show retract mounting wheel well openings wing mounting thin aluminum gear doors secured silicone rubber Two ny lon bolts heavy plywood tab leading edge provide wing mounting third recess leading edge foreground nose gear retract forward-swept wing leading edge created slightly modifying standard foam-core cut ting techniques main panel cut conventionally notched accept separately cut forward extension piece foam core parts giued together sheeted usuai Full-Size Plans AvailableSee Page 196 S CLOTH AND EPOXY Ii _______ 7/H--I.4 111iiI1 IIrJAr BALSA SKEET ON FOAM LOBED TAIL SURFACES IB SODA RE IB BALSA,r BALSA DYERBLOCKS COCKPIT FLOORFDA/A CORE FUSELABE TOP BLOCKS AC BALSA ~-- // II -___- /tf CCII VER MD BALSASTOCKlAB BALSA DOUBLER I/IC PLY OSUOL IRSlAB PLr FINSBOTTOM IACDOTO HERE NYLON BOLTS USE rWO ELEVATOR SERVOS UB BALSAAB PLYWOODWITH SEPARATE LINKAGE VALMET L9OTP WINO SADDLE PIECESWINO MOUNT/NO PLATETO EACH SURFACE RED/GO TN/NUSE 0000 MUFFLER ALUMINUM0ON LABOC NOISY ENGINES DEAR DOORS OF THE FINNISO TRAINER AIRCRAFT DES/UNtO AND DRAWN BY VAL DICK SARPOLUS 0I2545B2 BB ID II IV SKEET OF 2 rugged enough job drawback forward location actuating cylinder nose gear unit Lance machined away portion some cylinder fins Zenoah G-62 provide clearance retract mechanism dont think will affect engine cant say retracts have completely trouble-free far thats probably because first production sets few bugs ran being may already have worked out Lance right plane looks flies great wheels tucked up however want save money simplify project go fixed gear prototype came out 221/2 lb anotwithstanding Redigo acrobaticis straightforward uses fewest parts wing loading almost 40 ox per sq ftand fast sleek look Stable yetpossible havent scratch-built Thats bit high models size canagile model flies like Pattern aircraftplans before assured fly higher wing loading still handlewith 0-62relatively easy project comfortably first flight awesome Lance covered design MonoKotegood pilot Redigos performanceWing foam core wing requires replicating color scheme theimpressed everyone Im convincedpreliminary step section wing root full-scale test aircraft Lance plans give athat Quadra 50 less powerfulis cut Out replaced separately cut future Redigo striking appearanceengine would deliver reasonable scaleforward extension piece provide very bright air show-type finish thitperformance 0-62 turns plane adistinctive swept-forward leading edge decidedly nonscaletigerangle new configuration similar Weve found Zenoah G-62 athe P-Si Mustang wing planform great engine Brand new turned 20 x io onstruction youve created leading edge Zinger 8400 rpm ground weforward sweep complete structure expected good flight performance WeTypical sheeted foam-and-balsa/plywoodyou would foam core wing werent disappointed Its large sizebuilt-tip construction used structure re sheeting wing insert several April 1992 35 RC Valmet Redigo Type Sport Scale Wingspan 94 Recommended engine size type Zenoah G-62 40-50cc engine would adequate Number RC channels recommended Five six using optional flaps Expected flying weight 221/2 lb Type construction Built-up foam-and-balsa/plywood Type coveringltlnish recommended MonoKote plywood ribs hardwood stub spars foam cores rceeivc support retract mechanisms Adjust location ribs mounting rails and/or spars stilt retracts being used Cut /8-in plywood rib inserts oversize mark trim hush fit foam cores Using hot wire cutting tools very sharp modeling knifc cut grooves loam spars retract mounting rails dihedral joiner Finally cut holes pneumatic lines course youve already built foam core wings model retracts may have worked out own method supporting retract mechanisms use fixed landing gear suggest wire gear legs least 1/4 installed typical grooved hardwood gear blocks secured plywood ribs Make stire grooved block extends center wing location 1/4-in plywood wing joiner should used Add shock-absorbing struts desired plywood ribs gear mounting provisions have glued foam coics youre ready sheet wing cores top bottom use /32 mediumweight balsa core sheeting edge gluing necessary achieve retltlired width As longtime user Dave I3rowns Southern Sorghum contact cement adhering sheeting foam cores know ean expect perfect results time Other builders successfully use epoxy glue thinly applied 3M 77 spray contact cement Sig Manufacturing products Trim off leading edges block sand square Add oversized balsa 0/HEONAL S k2 MVER EACH TIP I/R PLYWC CENTER RI BALSA BLOCK WING TIPS /__________________________ SCALE AILERON eCOiNlTERBALANCESHEET COMPLETE ICONFIGURATIONTHEN CUT AILEROI ANO FINISM ECUE PO 1f4 PLT WING MOUNT BULKHEAO /If4PLT RETRACT MOUNTING SUPPORT / / / I / // PLT FIREWALL leadine edge strip plane sand shape wing tips made shaping balsa blocks Since large light blocks difficult obtain glued smaller blocks together needed size Cut aileron sections sheeted wing panels trim down allow balsa edging sand edges shape Bevel aileron leading edges preparation hinging Install hinges either along centerline prototype along top edge Use large sturdy free-moving hinges dont skimp luantity choose include flaps cut appropriate sections wing finish off did ailerons 1-linge flaps along lower edge Cut recesses lower wing surface aileron servo mounting Glue mounts wing use piece /4-in steel rod aileron servo extension cables heating its end pushing through foam core fiom root aileron servo location Removable thin plywood hatches 36 Model Aviation Doing hard way dont have Starting 11 layers pine glued together author builder Lance Schneider carved pine block shape use Nick Ziroli Jr Sr plug vacuum forming Redigos large plastic canopy x I/B Builder Lance Schneider services large model Byrons Craft Cuddler Full-Size Plans AvailableSee Page 196 SHEET WING WITH 5J5 BALSA BGALSA LEADING EDGE I4 PLY WING MOUNTING KEY WRAP WING CENTER JOINT WITH HEAVY FIBERGLASS CLOTH AND EPOXY_____ _______FOAM CORE SECTIONFOR RETRACT WHEEL CLEARANCE F I/B PLYWOOD WING JOINER I/41 I/5 HARDWOOD TOP AND BOTTOM RECESS SPARS INTO FOAM CORE ORE TEMPLA TES S/BXJJE HARDWOOD RETRACT MOUNTING/ lit RAILS- TO SUIT/ RETRACTS USED 1 INSTALL AILERON SERVOS IN WING / WITH ACCESS HATCHES ON BOTTOM SURFACE - I/BPLY RIBS SET INTO FOAM CORE SCALE FLAP HINGE LINE IF DESIRED CORE TEMPLATES IBPL T WING RIBS CUT OVERSIZE TRIM FLUSH WITH FOAM CORE CUT OUT AS NEEDED FOR RETRACTS 7 7 7 HEADS WRAP CENTER SECTION WITH F GLASS CLOTH AND EPOXY FOAM REAR TOP FUSELAGE TEMPLATES S/52 BALSA SHEETING I/4 PLYWOOD WING JOINER __________RtDIG 0 FOAM FORWAHO TOP FUSELAGE TEMPLATES 5 '\ III 1 BALSAII LEADING EDGE I\ I / II Si / S / SHEET S OF can bC installed over scrvo areas positioning wing used /4jfl plywood wing mounting key leading edgc rather customary dowcls key reinforced plywood ribs near foamcore root like method because contact area thc fusciage bulkhead retains wing mount can trimmed shimmed necessaly achieve correct wing-to-fuselage fit sure plywood key extends barterinch forward leading edge since rests recess fuselage wing mount bulkhead Butt glue wing halves using plywood joiner plenty epoxy Wrap center joint heavy fiberglass cloth epoxy Fuselage Select lirm-to-hard balsa Is-in sides edge gluing splicing wood necessary sixe youll need Install /16 plywood doublers balsa wing saddle pieces stab saddle doublers balsa corner strips both fuselage sides Add bulkheads using plan top fuselage view guide assembly Youll need bevel edge /2-in plywood firewall lit properly curved sides Add /4-in plywood wing bolt plate pull tail end together install icar bulkheads keeping fuselage straight sides taper rear straight line wing trailing edge position tail ensuring straightcut foam top block will fit correctly balsa cockpit Iloor strengthens stiffens fuselage assembly Reinforce firewall installation heavy fiberglass cloth epoxy installing over hardwood trianll e stock behind firewall also install several small screws through sides firewall extra security against vibration large engine Sheet trim foam core top pieces /3 balsa glue place Before sheeting bottom cut holes rear bulkheads elevator rudder pushrods Its best postpone adding bottom planking until after tail surfaces have installed wing has fitted fuselage Fit wing fuselage adjusting fit wing mounting key bulkhead necessary Drill through wing trailing edge mounting bolts Tap plywood fuselage wing motint accept /42 nylon bolts youre usin enine other Zenoah G-62 may necessary install plywood spacers behind enine mount order properly locate propeller Ii xed andi uig gear attach heavy-duty nose strut plywood firewall retracts cut firewall necessary install hardwood mOuntino Till retract mechanism between firewall adjacent bulkhead Depending engine retracts used may have cut away some cooling fins engine cylinder head provide clearance retract unit nose wheel retracted completely enclosed fuselage portion protrudes bottom aircraft continued page 146 April 1992 37 CROSS SECTION cZZFIIzz FOAM STAB CORE TEMPLATES I/B BALSA BULKHEADS Wth Wells Cargo Behind. Never Look Back WELLS CARGO Rolling Hanger like makes sense serious RC model pilot has dependable weather-proof transport has convenient safe storage Bird wings spare props radio gear organized ready go Buzzin anytime weatherman says OK Cloud Dancer unit 12 foot ToteWagon model Weve got Wells Cargo just right 6 feet up 3 YR LIMITED WARRANTY PROGRAM FACTORY SERVICE POINTS A TX UTAH US WIDE DEALER SERVICE NETWORK BALL HITCH TRAILERS 6-32 GOOSE NECKS 0 1-800-348-7553 FOR LITERATURE PRICES DEALER & PLANT LOCATIONS SINCE S CARGO PO BOX flS-982ELKHART IN 46515-0728 Valmet Redigo/Sarpolus Continued page 37 fiberglass cowl trimmed necessary clear engine cylinder exhaust landing gear Tap fuselage sides threaded nylon bolts used mounting cowl wing bolted fuselage build up lower section glue wing bottom shape blend rear fuselage section Similarly shape balsa block contour bottom forward fuselage glue bottom wing SAY YOU SAW IT IN MODEL AVIATION Trim large plastic canopy fit secure small screws lower edges fuselage side Add simulated interior cockpit details suit Since Redigo set up two-person side-by-side training room two rear passenger seats up four figures could used extra realism Tail surfaces Sheet tail surface cores /32 balsa Join horizontal stabilizer panels reinforcing joint fiberglass cloth epoxy Cut surface apart along hinge lines allowing space added balsa edges Finish off edges install hinges glue stabilizer fuselage Glue vertical fin stabilizerand top fuselage piece rudder linkage can handled torque tube arrangement extending through stab since hookup pushrod will internal sure make secure Shape balsa blocks installed aft fuselage top side behind fin blocks place make three small fixed vertical fins attach fuselage bottom Control surfaces Recess control surfaces accept t/4-in plywood pieces mounting nylon horns ailerons elevators Epoxy plywood mounts control surfaces attach horns small screws recommend using larger 4-40 threaded rods devises linkages Use fiberglass tube pushrods elevator linkages Make fuselage servo mounting 1/4-in plywood elevators actuated separate servos its own pushrod allows pushrods perfectly straight Since pushrods cross over within fuselage elevator servos must mounted about I8 higher other prevent pushrods rubbing together Use aileron extension cables make Y-harness two aileron servos mounted wing Another Y-harness required two elevator servos used 1 200-mAh battery pack wrapped foam rubber positioned behind wing trailing edge its weight required balance Landing gear wheels engine fuel system appearance sake cut main landing gear doors thin aluminum affixed retract struts silicone adhesive may add landing gear doors nose gear well Robarts scale wheels look good model adequately support Redigos weight however wheels require Robarts interna[ loam tire ~doublers Order direct manufacturer used 16-oz fuel tank Theres room second 1 6-oz tank smoke system desired ignition cutoff switch mounted forward firewall switch SAVE YOUR FIELD SNUF-LER muffler low cost easy Install lightweight sound reducing muffler no performance penalty answer AMA muffler rule suggestions saving flying fields Meets AMA muffler rule suggestions 3 10 decibels quieter stock muffler No power lose posaibie 300500 RPM increase Improves engine idle s better fuel economy Easily attached 25-108 atock mufflers Heat corrosion resistant Black E coat finish No special adapters required Weighs 35 oza Fits ASP BRAT ENYA FOX HP IRVINE K & B 05 MAX ROYAL YS SUPER TIGRE mufflers available hobby shop ORDER DIRECT immediate shipment Check MO Visa MC cooSEND 25i STAMP accepted Add 5250 UPS $200 COD t% sales tasFOR ADDITIONAL INFO Calif residentAND ITEC CATALOG 146 Model Aviation GO FLYING WITH COMPLETE ROLLING HANGER LIKE THIS NEW FAI TAN RUBBER 114 3/16 1/8 thick 1 lb box $1475 inciudes4oL Slick Lubel $1375 mo lube k costs *1751 10 lb box- $11000 ius Deliveredl Postpaid US vie UPS Cal res add 6% sales tax Made USA Slow cure consiatant quaifty Ask PAl-TAN 89190 catalog hate 100FF kitel CROCKET HOOKS~ NOW MADE BY SEND*150FA Model Supply FOR CATALOGnoneocEcsosboCARSON 0090745 nEc 213 830-8935 handle protrudes slightly through fiberglass cowl propeller Zinger 20 x 10 used Zinger 31/2in spun aluminum spinner Cut hole through cowl easy access carburetor Install air pressure filler valve retracts fuselage bottom nose section used B&B muffler Zenoah G-62 cutting cowl clearance around muffler Unfortunately noise level still pretty high dont know really effective commercially available mufflers fit G-62 add-on units such JTec Snuffler could hung externally below fuselage Wouldnt look good unless flying field location can tolerate noise might have quiet down Zenoah somehow Covering finishing duplicated color scheme original Redigo test aircraftgray overall contrasting areas black red yellow blue look scale yet somewhat understated As noted next Redigo will probably receive bright air-show aerobatic-type finish greater visual excitement large airplane large engine exact Scale comes pretty close Using retracts adds complexity amount scale detailing incorporated up builder Basically however can count airframe thats quick easy build fast aerobatic flight Redigo well suited sport flier wants large model hot performance Award Continued page 51 Frank wife Carmen enjoy leisurely retired life Northridge California have won additional fame annual reports detailing travels around country over world reports have become collector items friends privileged receive Looking back highlights very full life Frank recalls special pride early 1930s full-scale glider pilot pilots license signed Orville Wright Approximately 60 years later noted special distinction the NAA ceremony underscores pertinence NAA award 0 Rnaliy An Engine Mount tern Wont Shake Rattle Roll fly model planes dont have tell theres whole lotta shakin goin now theres something cando about Sullivan Flex Mount System Its engine mounting sys tem has specially designed rubber isolators absorb enine vibration reduce noise andi limit wear tear mode thats Flex-Mount comes aluminum adaptor plate makes easy mount 40 60 90 two-cycle engines firewall strap mount beam mounting four-cyde engines So dont jitterbug Thik dealer Sullivan Flex-Mount engine mount j ing system thought rock roll 7 PRODUCTS would never die Box51668alomorMD21224 Getting Better Ideas OtT Ground RC Aerobatics/Van Putte Continued page 71 Well tough dont favor increasing two-cycle limit above 61 because airplane size would go up stay competitive have enough trouble getting LA-l Ford Probe already personal favorite way promote twocycle vs four-cycle equity restrict fourcycle engine displacement 80 90 two-cycle technology seems about topped out cant keep engines together very long now replacing something other hand four-cycle engine technology still upsweep current 120 four-cycle restriction disparity between two-cycle four-cycle engines going get worse severe restriction four-cycle engine displacement reasonable Eric closed almost impossible legislate either morality economy competitive event However good judging think likely pilot flies better sequence will win contest cases agree anyone would like see complete copy Erics letter Id glad provide youll send SASE Prodigy would like send message ID CMFBO2B l 1992 147
Edition: Model Aviation - 1992/04
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 146, 147
NO OCR TEXT NO OCR TEXT Holding closely possible scale outlines drew up plans 94-in wingspan provided 1300 sq wing area figured would suit Quadra 50 Zenoah 0-62 engine retractable landing gear intentional deviation scale shorten nose length Otherwise model would probably have come out nose-heavy keep project relatively simple left off turbine exhaust stacks air scoop beneath cowl can add details choose Likewise decided flaps unnecessary because anticipated wing loading interested sport aircraft handles well aircraft thats precisely Scale three versions Valmet trainer L-70 L-8OTP L-9OTP would make good Scale projects intend draw up L-70 plans myself near future its barn door wing fixed landing gear shorter nosed piston engine L-70 would easier model build build Send stamped self-addressed envelope two stamps copies three three-view Left Bottoms-up view tail surfaces showing tail skid stabilizer elevators separate pushrods Right Close-up tail feathers model sitting its field stand Note sweptback fin rudder stabilizer elevators counterbalanced elevator 32 Model Aviation Having helped builder Lance Schneider author mold large clear plastic canopy Nick Ziroll Jr Sr now offer Item commercially fiberglass cowl available T&D Fiberglass Specialties Retractable landing gear shock-absorbing struts Impact Engineering add scale appearance Zenoah G-62 engine pushes craft Pattern league 20 x 10 prop spun aluminum spinner both Zinger two-seat cockpit has room two pas senger seats rear Designing model View radio installation Zenoah G-62 engine B&B muffler ImpacT engineering retractable landing gear Note retract gear air pressure filler fitting fuselage bottom next engine elevators have separate servo/pushrod installations Y-adapter used receiver Other servos throttle rudder nose gear steering I z BPLSfl 3HEET OVER OTh DICK S4RPOLz----~I ~auuruu EUWEW PLflSTIC CRNOP9 PILPbLEI FROM NICK ZROII MODE-i-S~7 S4LE -7 7JQBRLSR1141S OR -s I- SUPtO N RECIcL IrSPKING i BRLS SIDE5&O1TOM Ac FIREWOLL 4O op 5O ENGINE- OVER FORM CORE 4z HPRD4o PLY RISS FIBERGL5 COWL Fi T&D FI5ERGLPEE 0 0 drawings few photographs address 32 Alameda Ct Shrewsbury NJ 07702 Redigo uses familiar construction techniques well proven several earlier projects experience foam-cored wing tail surfaces quickest easiest way go scratch-built models size foam cores save great deal design time weight comes reasonable figure doubt built-up rib spar sheet structure sufficient strength could achieved comparable weight fuselage configuration its straight tapered tail section also lends itself use foam-cored upper portions wasnt difficult model design As noted except nose length exact scale outlines followed closely possible lighter weight choice among available large glow engines could probably keep nose length scale proportions scratch-built cowl shape should fairly easy duplicate fiberglass cowl however available T&D Fiberglass Specialties 38624 Mount Kisco Sterling Heights MI 48310 telephone 313 9782512 full-scale Rcdigo uses modified NACA 63-2 18 airfoil root modified NACA 63-4 12 tip root set 30 positive incidence wing has built-in 30 washout twist drawings possession judged airfoils too unusual appearance RC airplane Instead drew up nonscale fully symmetrical 16%-thick wing airfoil section similar others have achieved good aerobatic overall flying characteristics no service cutting foam cores available area recommend Aerosmith Model Aviation RD #1 Box 290 Athens NY 12015 telephone 518 945-1091 large clear plastic canopy presents single difficult challenge scratchbuilder undertaking project Ul PLEWBOB IREALL I2i REINFORCE FIREWALL i1i1I 11111 _____________ 217~ liii Locate PAILS TO SUIT RETRACTS USEDHARDWOOD TRIANGLE SroCK FIBERGLASS COWL AVAIL ABLE FROM TAO FIBERGLASS SPECIALTIES 3*820 MOUNT KISCO STERLING HEIGHTS MI BASID L12 SPINNER / 1'i JI 7 j4A 7i-~--ZENOAK GB USED IN PROTOTTPE ANT 00 OR ROtC ENGINE SHRUG 0 BE SGITADLB PCASIIC TANG NICK ZIROLI 20 EDGAR 0 SMITH TOWN FUEL TANK -BArn 1 -I PLT BALSA BLOCK VBA 3/4 HA NO WOOD RETRACT MOUNTING STRUT LOCATION WILL ART OCPINOING ON RETRACTS I OSEG LOCATE FARTHER FORWARD IF POSSIBLE FIXED OR RE big over 24 long 11 wide about 6 deep isnt easy find canopy vacuum-forming capability scope lucky Well-known modelers Nick Ziroli Jr Sr helped us out vacuum-forming equipment Lance carved plug pine boards glued together quite task Zirolis used pull few canopies us worry Zirolis now offering canopy commercially Details available Nick Ziroli Models 29 Edgar Drive Smithtown NY 11787 some doubts about using retractable landing gear concerned about added weight gear mechanisms need supporting structure worried about reliability retracts Also cost some money Lance builder decision thought clean aircraft layout would look good fly well wheels pulled up retracts way go found several types commercially available retracts thought suitable Dave Platt Impact Engineering designs both looked good finally used Impact gear along shock-absorbing struts same company scale appearance gear appear well designed 34 Model Aviation wing has turned upside down show retract mounting wheel well openings wing mounting thin aluminum gear doors secured silicone rubber Two ny lon bolts heavy plywood tab leading edge provide wing mounting third recess leading edge foreground nose gear retract forward-swept wing leading edge created slightly modifying standard foam-core cut ting techniques main panel cut conventionally notched accept separately cut forward extension piece foam core parts giued together sheeted usuai Full-Size Plans AvailableSee Page 196 S CLOTH AND EPOXY Ii _______ 7/H--I.4 111iiI1 IIrJAr BALSA SKEET ON FOAM LOBED TAIL SURFACES IB SODA RE IB BALSA,r BALSA DYERBLOCKS COCKPIT FLOORFDA/A CORE FUSELABE TOP BLOCKS AC BALSA ~-- // II -___- /tf CCII VER MD BALSASTOCKlAB BALSA DOUBLER I/IC PLY OSUOL IRSlAB PLr FINSBOTTOM IACDOTO HERE NYLON BOLTS USE rWO ELEVATOR SERVOS UB BALSAAB PLYWOODWITH SEPARATE LINKAGE VALMET L9OTP WINO SADDLE PIECESWINO MOUNT/NO PLATETO EACH SURFACE RED/GO TN/NUSE 0000 MUFFLER ALUMINUM0ON LABOC NOISY ENGINES DEAR DOORS OF THE FINNISO TRAINER AIRCRAFT DES/UNtO AND DRAWN BY VAL DICK SARPOLUS 0I2545B2 BB ID II IV SKEET OF 2 rugged enough job drawback forward location actuating cylinder nose gear unit Lance machined away portion some cylinder fins Zenoah G-62 provide clearance retract mechanism dont think will affect engine cant say retracts have completely trouble-free far thats probably because first production sets few bugs ran being may already have worked out Lance right plane looks flies great wheels tucked up however want save money simplify project go fixed gear prototype came out 221/2 lb anotwithstanding Redigo acrobaticis straightforward uses fewest parts wing loading almost 40 ox per sq ftand fast sleek look Stable yetpossible havent scratch-built Thats bit high models size canagile model flies like Pattern aircraftplans before assured fly higher wing loading still handlewith 0-62relatively easy project comfortably first flight awesome Lance covered design MonoKotegood pilot Redigos performanceWing foam core wing requires replicating color scheme theimpressed everyone Im convincedpreliminary step section wing root full-scale test aircraft Lance plans give athat Quadra 50 less powerfulis cut Out replaced separately cut future Redigo striking appearanceengine would deliver reasonable scaleforward extension piece provide very bright air show-type finish thitperformance 0-62 turns plane adistinctive swept-forward leading edge decidedly nonscaletigerangle new configuration similar Weve found Zenoah G-62 athe P-Si Mustang wing planform great engine Brand new turned 20 x io onstruction youve created leading edge Zinger 8400 rpm ground weforward sweep complete structure expected good flight performance WeTypical sheeted foam-and-balsa/plywoodyou would foam core wing werent disappointed Its large sizebuilt-tip construction used structure re sheeting wing insert several April 1992 35 RC Valmet Redigo Type Sport Scale Wingspan 94 Recommended engine size type Zenoah G-62 40-50cc engine would adequate Number RC channels recommended Five six using optional flaps Expected flying weight 221/2 lb Type construction Built-up foam-and-balsa/plywood Type coveringltlnish recommended MonoKote plywood ribs hardwood stub spars foam cores rceeivc support retract mechanisms Adjust location ribs mounting rails and/or spars stilt retracts being used Cut /8-in plywood rib inserts oversize mark trim hush fit foam cores Using hot wire cutting tools very sharp modeling knifc cut grooves loam spars retract mounting rails dihedral joiner Finally cut holes pneumatic lines course youve already built foam core wings model retracts may have worked out own method supporting retract mechanisms use fixed landing gear suggest wire gear legs least 1/4 installed typical grooved hardwood gear blocks secured plywood ribs Make stire grooved block extends center wing location 1/4-in plywood wing joiner should used Add shock-absorbing struts desired plywood ribs gear mounting provisions have glued foam coics youre ready sheet wing cores top bottom use /32 mediumweight balsa core sheeting edge gluing necessary achieve retltlired width As longtime user Dave I3rowns Southern Sorghum contact cement adhering sheeting foam cores know ean expect perfect results time Other builders successfully use epoxy glue thinly applied 3M 77 spray contact cement Sig Manufacturing products Trim off leading edges block sand square Add oversized balsa 0/HEONAL S k2 MVER EACH TIP I/R PLYWC CENTER RI BALSA BLOCK WING TIPS /__________________________ SCALE AILERON eCOiNlTERBALANCESHEET COMPLETE ICONFIGURATIONTHEN CUT AILEROI ANO FINISM ECUE PO 1f4 PLT WING MOUNT BULKHEAO /If4PLT RETRACT MOUNTING SUPPORT / / / I / // PLT FIREWALL leadine edge strip plane sand shape wing tips made shaping balsa blocks Since large light blocks difficult obtain glued smaller blocks together needed size Cut aileron sections sheeted wing panels trim down allow balsa edging sand edges shape Bevel aileron leading edges preparation hinging Install hinges either along centerline prototype along top edge Use large sturdy free-moving hinges dont skimp luantity choose include flaps cut appropriate sections wing finish off did ailerons 1-linge flaps along lower edge Cut recesses lower wing surface aileron servo mounting Glue mounts wing use piece /4-in steel rod aileron servo extension cables heating its end pushing through foam core fiom root aileron servo location Removable thin plywood hatches 36 Model Aviation Doing hard way dont have Starting 11 layers pine glued together author builder Lance Schneider carved pine block shape use Nick Ziroli Jr Sr plug vacuum forming Redigos large plastic canopy x I/B Builder Lance Schneider services large model Byrons Craft Cuddler Full-Size Plans AvailableSee Page 196 SHEET WING WITH 5J5 BALSA BGALSA LEADING EDGE I4 PLY WING MOUNTING KEY WRAP WING CENTER JOINT WITH HEAVY FIBERGLASS CLOTH AND EPOXY_____ _______FOAM CORE SECTIONFOR RETRACT WHEEL CLEARANCE F I/B PLYWOOD WING JOINER I/41 I/5 HARDWOOD TOP AND BOTTOM RECESS SPARS INTO FOAM CORE ORE TEMPLA TES S/BXJJE HARDWOOD RETRACT MOUNTING/ lit RAILS- TO SUIT/ RETRACTS USED 1 INSTALL AILERON SERVOS IN WING / WITH ACCESS HATCHES ON BOTTOM SURFACE - I/BPLY RIBS SET INTO FOAM CORE SCALE FLAP HINGE LINE IF DESIRED CORE TEMPLATES IBPL T WING RIBS CUT OVERSIZE TRIM FLUSH WITH FOAM CORE CUT OUT AS NEEDED FOR RETRACTS 7 7 7 HEADS WRAP CENTER SECTION WITH F GLASS CLOTH AND EPOXY FOAM REAR TOP FUSELAGE TEMPLATES S/52 BALSA SHEETING I/4 PLYWOOD WING JOINER __________RtDIG 0 FOAM FORWAHO TOP FUSELAGE TEMPLATES 5 '\ III 1 BALSAII LEADING EDGE I\ I / II Si / S / SHEET S OF can bC installed over scrvo areas positioning wing used /4jfl plywood wing mounting key leading edgc rather customary dowcls key reinforced plywood ribs near foamcore root like method because contact area thc fusciage bulkhead retains wing mount can trimmed shimmed necessaly achieve correct wing-to-fuselage fit sure plywood key extends barterinch forward leading edge since rests recess fuselage wing mount bulkhead Butt glue wing halves using plywood joiner plenty epoxy Wrap center joint heavy fiberglass cloth epoxy Fuselage Select lirm-to-hard balsa Is-in sides edge gluing splicing wood necessary sixe youll need Install /16 plywood doublers balsa wing saddle pieces stab saddle doublers balsa corner strips both fuselage sides Add bulkheads using plan top fuselage view guide assembly Youll need bevel edge /2-in plywood firewall lit properly curved sides Add /4-in plywood wing bolt plate pull tail end together install icar bulkheads keeping fuselage straight sides taper rear straight line wing trailing edge position tail ensuring straightcut foam top block will fit correctly balsa cockpit Iloor strengthens stiffens fuselage assembly Reinforce firewall installation heavy fiberglass cloth epoxy installing over hardwood trianll e stock behind firewall also install several small screws through sides firewall extra security against vibration large engine Sheet trim foam core top pieces /3 balsa glue place Before sheeting bottom cut holes rear bulkheads elevator rudder pushrods Its best postpone adding bottom planking until after tail surfaces have installed wing has fitted fuselage Fit wing fuselage adjusting fit wing mounting key bulkhead necessary Drill through wing trailing edge mounting bolts Tap plywood fuselage wing motint accept /42 nylon bolts youre usin enine other Zenoah G-62 may necessary install plywood spacers behind enine mount order properly locate propeller Ii xed andi uig gear attach heavy-duty nose strut plywood firewall retracts cut firewall necessary install hardwood mOuntino Till retract mechanism between firewall adjacent bulkhead Depending engine retracts used may have cut away some cooling fins engine cylinder head provide clearance retract unit nose wheel retracted completely enclosed fuselage portion protrudes bottom aircraft continued page 146 April 1992 37 CROSS SECTION cZZFIIzz FOAM STAB CORE TEMPLATES I/B BALSA BULKHEADS Wth Wells Cargo Behind. Never Look Back WELLS CARGO Rolling Hanger like makes sense serious RC model pilot has dependable weather-proof transport has convenient safe storage Bird wings spare props radio gear organized ready go Buzzin anytime weatherman says OK Cloud Dancer unit 12 foot ToteWagon model Weve got Wells Cargo just right 6 feet up 3 YR LIMITED WARRANTY PROGRAM FACTORY SERVICE POINTS A TX UTAH US WIDE DEALER SERVICE NETWORK BALL HITCH TRAILERS 6-32 GOOSE NECKS 0 1-800-348-7553 FOR LITERATURE PRICES DEALER & PLANT LOCATIONS SINCE S CARGO PO BOX flS-982ELKHART IN 46515-0728 Valmet Redigo/Sarpolus Continued page 37 fiberglass cowl trimmed necessary clear engine cylinder exhaust landing gear Tap fuselage sides threaded nylon bolts used mounting cowl wing bolted fuselage build up lower section glue wing bottom shape blend rear fuselage section Similarly shape balsa block contour bottom forward fuselage glue bottom wing SAY YOU SAW IT IN MODEL AVIATION Trim large plastic canopy fit secure small screws lower edges fuselage side Add simulated interior cockpit details suit Since Redigo set up two-person side-by-side training room two rear passenger seats up four figures could used extra realism Tail surfaces Sheet tail surface cores /32 balsa Join horizontal stabilizer panels reinforcing joint fiberglass cloth epoxy Cut surface apart along hinge lines allowing space added balsa edges Finish off edges install hinges glue stabilizer fuselage Glue vertical fin stabilizerand top fuselage piece rudder linkage can handled torque tube arrangement extending through stab since hookup pushrod will internal sure make secure Shape balsa blocks installed aft fuselage top side behind fin blocks place make three small fixed vertical fins attach fuselage bottom Control surfaces Recess control surfaces accept t/4-in plywood pieces mounting nylon horns ailerons elevators Epoxy plywood mounts control surfaces attach horns small screws recommend using larger 4-40 threaded rods devises linkages Use fiberglass tube pushrods elevator linkages Make fuselage servo mounting 1/4-in plywood elevators actuated separate servos its own pushrod allows pushrods perfectly straight Since pushrods cross over within fuselage elevator servos must mounted about I8 higher other prevent pushrods rubbing together Use aileron extension cables make Y-harness two aileron servos mounted wing Another Y-harness required two elevator servos used 1 200-mAh battery pack wrapped foam rubber positioned behind wing trailing edge its weight required balance Landing gear wheels engine fuel system appearance sake cut main landing gear doors thin aluminum affixed retract struts silicone adhesive may add landing gear doors nose gear well Robarts scale wheels look good model adequately support Redigos weight however wheels require Robarts interna[ loam tire ~doublers Order direct manufacturer used 16-oz fuel tank Theres room second 1 6-oz tank smoke system desired ignition cutoff switch mounted forward firewall switch SAVE YOUR FIELD SNUF-LER muffler low cost easy Install lightweight sound reducing muffler no performance penalty answer AMA muffler rule suggestions saving flying fields Meets AMA muffler rule suggestions 3 10 decibels quieter stock muffler No power lose posaibie 300500 RPM increase Improves engine idle s better fuel economy Easily attached 25-108 atock mufflers Heat corrosion resistant Black E coat finish No special adapters required Weighs 35 oza Fits ASP BRAT ENYA FOX HP IRVINE K & B 05 MAX ROYAL YS SUPER TIGRE mufflers available hobby shop ORDER DIRECT immediate shipment Check MO Visa MC cooSEND 25i STAMP accepted Add 5250 UPS $200 COD t% sales tasFOR ADDITIONAL INFO Calif residentAND ITEC CATALOG 146 Model Aviation GO FLYING WITH COMPLETE ROLLING HANGER LIKE THIS NEW FAI TAN RUBBER 114 3/16 1/8 thick 1 lb box $1475 inciudes4oL Slick Lubel $1375 mo lube k costs *1751 10 lb box- $11000 ius Deliveredl Postpaid US vie UPS Cal res add 6% sales tax Made USA Slow cure consiatant quaifty Ask PAl-TAN 89190 catalog hate 100FF kitel CROCKET HOOKS~ NOW MADE BY SEND*150FA Model Supply FOR CATALOGnoneocEcsosboCARSON 0090745 nEc 213 830-8935 handle protrudes slightly through fiberglass cowl propeller Zinger 20 x 10 used Zinger 31/2in spun aluminum spinner Cut hole through cowl easy access carburetor Install air pressure filler valve retracts fuselage bottom nose section used B&B muffler Zenoah G-62 cutting cowl clearance around muffler Unfortunately noise level still pretty high dont know really effective commercially available mufflers fit G-62 add-on units such JTec Snuffler could hung externally below fuselage Wouldnt look good unless flying field location can tolerate noise might have quiet down Zenoah somehow Covering finishing duplicated color scheme original Redigo test aircraftgray overall contrasting areas black red yellow blue look scale yet somewhat understated As noted next Redigo will probably receive bright air-show aerobatic-type finish greater visual excitement large airplane large engine exact Scale comes pretty close Using retracts adds complexity amount scale detailing incorporated up builder Basically however can count airframe thats quick easy build fast aerobatic flight Redigo well suited sport flier wants large model hot performance Award Continued page 51 Frank wife Carmen enjoy leisurely retired life Northridge California have won additional fame annual reports detailing travels around country over world reports have become collector items friends privileged receive Looking back highlights very full life Frank recalls special pride early 1930s full-scale glider pilot pilots license signed Orville Wright Approximately 60 years later noted special distinction the NAA ceremony underscores pertinence NAA award 0 Rnaliy An Engine Mount tern Wont Shake Rattle Roll fly model planes dont have tell theres whole lotta shakin goin now theres something cando about Sullivan Flex Mount System Its engine mounting sys tem has specially designed rubber isolators absorb enine vibration reduce noise andi limit wear tear mode thats Flex-Mount comes aluminum adaptor plate makes easy mount 40 60 90 two-cycle engines firewall strap mount beam mounting four-cyde engines So dont jitterbug Thik dealer Sullivan Flex-Mount engine mount j ing system thought rock roll 7 PRODUCTS would never die Box51668alomorMD21224 Getting Better Ideas OtT Ground RC Aerobatics/Van Putte Continued page 71 Well tough dont favor increasing two-cycle limit above 61 because airplane size would go up stay competitive have enough trouble getting LA-l Ford Probe already personal favorite way promote twocycle vs four-cycle equity restrict fourcycle engine displacement 80 90 two-cycle technology seems about topped out cant keep engines together very long now replacing something other hand four-cycle engine technology still upsweep current 120 four-cycle restriction disparity between two-cycle four-cycle engines going get worse severe restriction four-cycle engine displacement reasonable Eric closed almost impossible legislate either morality economy competitive event However good judging think likely pilot flies better sequence will win contest cases agree anyone would like see complete copy Erics letter Id glad provide youll send SASE Prodigy would like send message ID CMFBO2B l 1992 147
Edition: Model Aviation - 1992/04
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 146, 147
NO OCR TEXT NO OCR TEXT Holding closely possible scale outlines drew up plans 94-in wingspan provided 1300 sq wing area figured would suit Quadra 50 Zenoah 0-62 engine retractable landing gear intentional deviation scale shorten nose length Otherwise model would probably have come out nose-heavy keep project relatively simple left off turbine exhaust stacks air scoop beneath cowl can add details choose Likewise decided flaps unnecessary because anticipated wing loading interested sport aircraft handles well aircraft thats precisely Scale three versions Valmet trainer L-70 L-8OTP L-9OTP would make good Scale projects intend draw up L-70 plans myself near future its barn door wing fixed landing gear shorter nosed piston engine L-70 would easier model build build Send stamped self-addressed envelope two stamps copies three three-view Left Bottoms-up view tail surfaces showing tail skid stabilizer elevators separate pushrods Right Close-up tail feathers model sitting its field stand Note sweptback fin rudder stabilizer elevators counterbalanced elevator 32 Model Aviation Having helped builder Lance Schneider author mold large clear plastic canopy Nick Ziroll Jr Sr now offer Item commercially fiberglass cowl available T&D Fiberglass Specialties Retractable landing gear shock-absorbing struts Impact Engineering add scale appearance Zenoah G-62 engine pushes craft Pattern league 20 x 10 prop spun aluminum spinner both Zinger two-seat cockpit has room two pas senger seats rear Designing model View radio installation Zenoah G-62 engine B&B muffler ImpacT engineering retractable landing gear Note retract gear air pressure filler fitting fuselage bottom next engine elevators have separate servo/pushrod installations Y-adapter used receiver Other servos throttle rudder nose gear steering I z BPLSfl 3HEET OVER OTh DICK S4RPOLz----~I ~auuruu EUWEW PLflSTIC CRNOP9 PILPbLEI FROM NICK ZROII MODE-i-S~7 S4LE -7 7JQBRLSR1141S OR -s I- SUPtO N RECIcL IrSPKING i BRLS SIDE5&O1TOM Ac FIREWOLL 4O op 5O ENGINE- OVER FORM CORE 4z HPRD4o PLY RISS FIBERGL5 COWL Fi T&D FI5ERGLPEE 0 0 drawings few photographs address 32 Alameda Ct Shrewsbury NJ 07702 Redigo uses familiar construction techniques well proven several earlier projects experience foam-cored wing tail surfaces quickest easiest way go scratch-built models size foam cores save great deal design time weight comes reasonable figure doubt built-up rib spar sheet structure sufficient strength could achieved comparable weight fuselage configuration its straight tapered tail section also lends itself use foam-cored upper portions wasnt difficult model design As noted except nose length exact scale outlines followed closely possible lighter weight choice among available large glow engines could probably keep nose length scale proportions scratch-built cowl shape should fairly easy duplicate fiberglass cowl however available T&D Fiberglass Specialties 38624 Mount Kisco Sterling Heights MI 48310 telephone 313 9782512 full-scale Rcdigo uses modified NACA 63-2 18 airfoil root modified NACA 63-4 12 tip root set 30 positive incidence wing has built-in 30 washout twist drawings possession judged airfoils too unusual appearance RC airplane Instead drew up nonscale fully symmetrical 16%-thick wing airfoil section similar others have achieved good aerobatic overall flying characteristics no service cutting foam cores available area recommend Aerosmith Model Aviation RD #1 Box 290 Athens NY 12015 telephone 518 945-1091 large clear plastic canopy presents single difficult challenge scratchbuilder undertaking project Ul PLEWBOB IREALL I2i REINFORCE FIREWALL i1i1I 11111 _____________ 217~ liii Locate PAILS TO SUIT RETRACTS USEDHARDWOOD TRIANGLE SroCK FIBERGLASS COWL AVAIL ABLE FROM TAO FIBERGLASS SPECIALTIES 3*820 MOUNT KISCO STERLING HEIGHTS MI BASID L12 SPINNER / 1'i JI 7 j4A 7i-~--ZENOAK GB USED IN PROTOTTPE ANT 00 OR ROtC ENGINE SHRUG 0 BE SGITADLB PCASIIC TANG NICK ZIROLI 20 EDGAR 0 SMITH TOWN FUEL TANK -BArn 1 -I PLT BALSA BLOCK VBA 3/4 HA NO WOOD RETRACT MOUNTING STRUT LOCATION WILL ART OCPINOING ON RETRACTS I OSEG LOCATE FARTHER FORWARD IF POSSIBLE FIXED OR RE big over 24 long 11 wide about 6 deep isnt easy find canopy vacuum-forming capability scope lucky Well-known modelers Nick Ziroli Jr Sr helped us out vacuum-forming equipment Lance carved plug pine boards glued together quite task Zirolis used pull few canopies us worry Zirolis now offering canopy commercially Details available Nick Ziroli Models 29 Edgar Drive Smithtown NY 11787 some doubts about using retractable landing gear concerned about added weight gear mechanisms need supporting structure worried about reliability retracts Also cost some money Lance builder decision thought clean aircraft layout would look good fly well wheels pulled up retracts way go found several types commercially available retracts thought suitable Dave Platt Impact Engineering designs both looked good finally used Impact gear along shock-absorbing struts same company scale appearance gear appear well designed 34 Model Aviation wing has turned upside down show retract mounting wheel well openings wing mounting thin aluminum gear doors secured silicone rubber Two ny lon bolts heavy plywood tab leading edge provide wing mounting third recess leading edge foreground nose gear retract forward-swept wing leading edge created slightly modifying standard foam-core cut ting techniques main panel cut conventionally notched accept separately cut forward extension piece foam core parts giued together sheeted usuai Full-Size Plans AvailableSee Page 196 S CLOTH AND EPOXY Ii _______ 7/H--I.4 111iiI1 IIrJAr BALSA SKEET ON FOAM LOBED TAIL SURFACES IB SODA RE IB BALSA,r BALSA DYERBLOCKS COCKPIT FLOORFDA/A CORE FUSELABE TOP BLOCKS AC BALSA ~-- // II -___- /tf CCII VER MD BALSASTOCKlAB BALSA DOUBLER I/IC PLY OSUOL IRSlAB PLr FINSBOTTOM IACDOTO HERE NYLON BOLTS USE rWO ELEVATOR SERVOS UB BALSAAB PLYWOODWITH SEPARATE LINKAGE VALMET L9OTP WINO SADDLE PIECESWINO MOUNT/NO PLATETO EACH SURFACE RED/GO TN/NUSE 0000 MUFFLER ALUMINUM0ON LABOC NOISY ENGINES DEAR DOORS OF THE FINNISO TRAINER AIRCRAFT DES/UNtO AND DRAWN BY VAL DICK SARPOLUS 0I2545B2 BB ID II IV SKEET OF 2 rugged enough job drawback forward location actuating cylinder nose gear unit Lance machined away portion some cylinder fins Zenoah G-62 provide clearance retract mechanism dont think will affect engine cant say retracts have completely trouble-free far thats probably because first production sets few bugs ran being may already have worked out Lance right plane looks flies great wheels tucked up however want save money simplify project go fixed gear prototype came out 221/2 lb anotwithstanding Redigo acrobaticis straightforward uses fewest parts wing loading almost 40 ox per sq ftand fast sleek look Stable yetpossible havent scratch-built Thats bit high models size canagile model flies like Pattern aircraftplans before assured fly higher wing loading still handlewith 0-62relatively easy project comfortably first flight awesome Lance covered design MonoKotegood pilot Redigos performanceWing foam core wing requires replicating color scheme theimpressed everyone Im convincedpreliminary step section wing root full-scale test aircraft Lance plans give athat Quadra 50 less powerfulis cut Out replaced separately cut future Redigo striking appearanceengine would deliver reasonable scaleforward extension piece provide very bright air show-type finish thitperformance 0-62 turns plane adistinctive swept-forward leading edge decidedly nonscaletigerangle new configuration similar Weve found Zenoah G-62 athe P-Si Mustang wing planform great engine Brand new turned 20 x io onstruction youve created leading edge Zinger 8400 rpm ground weforward sweep complete structure expected good flight performance WeTypical sheeted foam-and-balsa/plywoodyou would foam core wing werent disappointed Its large sizebuilt-tip construction used structure re sheeting wing insert several April 1992 35 RC Valmet Redigo Type Sport Scale Wingspan 94 Recommended engine size type Zenoah G-62 40-50cc engine would adequate Number RC channels recommended Five six using optional flaps Expected flying weight 221/2 lb Type construction Built-up foam-and-balsa/plywood Type coveringltlnish recommended MonoKote plywood ribs hardwood stub spars foam cores rceeivc support retract mechanisms Adjust location ribs mounting rails and/or spars stilt retracts being used Cut /8-in plywood rib inserts oversize mark trim hush fit foam cores Using hot wire cutting tools very sharp modeling knifc cut grooves loam spars retract mounting rails dihedral joiner Finally cut holes pneumatic lines course youve already built foam core wings model retracts may have worked out own method supporting retract mechanisms use fixed landing gear suggest wire gear legs least 1/4 installed typical grooved hardwood gear blocks secured plywood ribs Make stire grooved block extends center wing location 1/4-in plywood wing joiner should used Add shock-absorbing struts desired plywood ribs gear mounting provisions have glued foam coics youre ready sheet wing cores top bottom use /32 mediumweight balsa core sheeting edge gluing necessary achieve retltlired width As longtime user Dave I3rowns Southern Sorghum contact cement adhering sheeting foam cores know ean expect perfect results time Other builders successfully use epoxy glue thinly applied 3M 77 spray contact cement Sig Manufacturing products Trim off leading edges block sand square Add oversized balsa 0/HEONAL S k2 MVER EACH TIP I/R PLYWC CENTER RI BALSA BLOCK WING TIPS /__________________________ SCALE AILERON eCOiNlTERBALANCESHEET COMPLETE ICONFIGURATIONTHEN CUT AILEROI ANO FINISM ECUE PO 1f4 PLT WING MOUNT BULKHEAO /If4PLT RETRACT MOUNTING SUPPORT / / / I / // PLT FIREWALL leadine edge strip plane sand shape wing tips made shaping balsa blocks Since large light blocks difficult obtain glued smaller blocks together needed size Cut aileron sections sheeted wing panels trim down allow balsa edging sand edges shape Bevel aileron leading edges preparation hinging Install hinges either along centerline prototype along top edge Use large sturdy free-moving hinges dont skimp luantity choose include flaps cut appropriate sections wing finish off did ailerons 1-linge flaps along lower edge Cut recesses lower wing surface aileron servo mounting Glue mounts wing use piece /4-in steel rod aileron servo extension cables heating its end pushing through foam core fiom root aileron servo location Removable thin plywood hatches 36 Model Aviation Doing hard way dont have Starting 11 layers pine glued together author builder Lance Schneider carved pine block shape use Nick Ziroli Jr Sr plug vacuum forming Redigos large plastic canopy x I/B Builder Lance Schneider services large model Byrons Craft Cuddler Full-Size Plans AvailableSee Page 196 SHEET WING WITH 5J5 BALSA BGALSA LEADING EDGE I4 PLY WING MOUNTING KEY WRAP WING CENTER JOINT WITH HEAVY FIBERGLASS CLOTH AND EPOXY_____ _______FOAM CORE SECTIONFOR RETRACT WHEEL CLEARANCE F I/B PLYWOOD WING JOINER I/41 I/5 HARDWOOD TOP AND BOTTOM RECESS SPARS INTO FOAM CORE ORE TEMPLA TES S/BXJJE HARDWOOD RETRACT MOUNTING/ lit RAILS- TO SUIT/ RETRACTS USED 1 INSTALL AILERON SERVOS IN WING / WITH ACCESS HATCHES ON BOTTOM SURFACE - I/BPLY RIBS SET INTO FOAM CORE SCALE FLAP HINGE LINE IF DESIRED CORE TEMPLATES IBPL T WING RIBS CUT OVERSIZE TRIM FLUSH WITH FOAM CORE CUT OUT AS NEEDED FOR RETRACTS 7 7 7 HEADS WRAP CENTER SECTION WITH F GLASS CLOTH AND EPOXY FOAM REAR TOP FUSELAGE TEMPLATES S/52 BALSA SHEETING I/4 PLYWOOD WING JOINER __________RtDIG 0 FOAM FORWAHO TOP FUSELAGE TEMPLATES 5 '\ III 1 BALSAII LEADING EDGE I\ I / II Si / S / SHEET S OF can bC installed over scrvo areas positioning wing used /4jfl plywood wing mounting key leading edgc rather customary dowcls key reinforced plywood ribs near foamcore root like method because contact area thc fusciage bulkhead retains wing mount can trimmed shimmed necessaly achieve correct wing-to-fuselage fit sure plywood key extends barterinch forward leading edge since rests recess fuselage wing mount bulkhead Butt glue wing halves using plywood joiner plenty epoxy Wrap center joint heavy fiberglass cloth epoxy Fuselage Select lirm-to-hard balsa Is-in sides edge gluing splicing wood necessary sixe youll need Install /16 plywood doublers balsa wing saddle pieces stab saddle doublers balsa corner strips both fuselage sides Add bulkheads using plan top fuselage view guide assembly Youll need bevel edge /2-in plywood firewall lit properly curved sides Add /4-in plywood wing bolt plate pull tail end together install icar bulkheads keeping fuselage straight sides taper rear straight line wing trailing edge position tail ensuring straightcut foam top block will fit correctly balsa cockpit Iloor strengthens stiffens fuselage assembly Reinforce firewall installation heavy fiberglass cloth epoxy installing over hardwood trianll e stock behind firewall also install several small screws through sides firewall extra security against vibration large engine Sheet trim foam core top pieces /3 balsa glue place Before sheeting bottom cut holes rear bulkheads elevator rudder pushrods Its best postpone adding bottom planking until after tail surfaces have installed wing has fitted fuselage Fit wing fuselage adjusting fit wing mounting key bulkhead necessary Drill through wing trailing edge mounting bolts Tap plywood fuselage wing motint accept /42 nylon bolts youre usin enine other Zenoah G-62 may necessary install plywood spacers behind enine mount order properly locate propeller Ii xed andi uig gear attach heavy-duty nose strut plywood firewall retracts cut firewall necessary install hardwood mOuntino Till retract mechanism between firewall adjacent bulkhead Depending engine retracts used may have cut away some cooling fins engine cylinder head provide clearance retract unit nose wheel retracted completely enclosed fuselage portion protrudes bottom aircraft continued page 146 April 1992 37 CROSS SECTION cZZFIIzz FOAM STAB CORE TEMPLATES I/B BALSA BULKHEADS Wth Wells Cargo Behind. Never Look Back WELLS CARGO Rolling Hanger like makes sense serious RC model pilot has dependable weather-proof transport has convenient safe storage Bird wings spare props radio gear organized ready go Buzzin anytime weatherman says OK Cloud Dancer unit 12 foot ToteWagon model Weve got Wells Cargo just right 6 feet up 3 YR LIMITED WARRANTY PROGRAM FACTORY SERVICE POINTS A TX UTAH US WIDE DEALER SERVICE NETWORK BALL HITCH TRAILERS 6-32 GOOSE NECKS 0 1-800-348-7553 FOR LITERATURE PRICES DEALER & PLANT LOCATIONS SINCE S CARGO PO BOX flS-982ELKHART IN 46515-0728 Valmet Redigo/Sarpolus Continued page 37 fiberglass cowl trimmed necessary clear engine cylinder exhaust landing gear Tap fuselage sides threaded nylon bolts used mounting cowl wing bolted fuselage build up lower section glue wing bottom shape blend rear fuselage section Similarly shape balsa block contour bottom forward fuselage glue bottom wing SAY YOU SAW IT IN MODEL AVIATION Trim large plastic canopy fit secure small screws lower edges fuselage side Add simulated interior cockpit details suit Since Redigo set up two-person side-by-side training room two rear passenger seats up four figures could used extra realism Tail surfaces Sheet tail surface cores /32 balsa Join horizontal stabilizer panels reinforcing joint fiberglass cloth epoxy Cut surface apart along hinge lines allowing space added balsa edges Finish off edges install hinges glue stabilizer fuselage Glue vertical fin stabilizerand top fuselage piece rudder linkage can handled torque tube arrangement extending through stab since hookup pushrod will internal sure make secure Shape balsa blocks installed aft fuselage top side behind fin blocks place make three small fixed vertical fins attach fuselage bottom Control surfaces Recess control surfaces accept t/4-in plywood pieces mounting nylon horns ailerons elevators Epoxy plywood mounts control surfaces attach horns small screws recommend using larger 4-40 threaded rods devises linkages Use fiberglass tube pushrods elevator linkages Make fuselage servo mounting 1/4-in plywood elevators actuated separate servos its own pushrod allows pushrods perfectly straight Since pushrods cross over within fuselage elevator servos must mounted about I8 higher other prevent pushrods rubbing together Use aileron extension cables make Y-harness two aileron servos mounted wing Another Y-harness required two elevator servos used 1 200-mAh battery pack wrapped foam rubber positioned behind wing trailing edge its weight required balance Landing gear wheels engine fuel system appearance sake cut main landing gear doors thin aluminum affixed retract struts silicone adhesive may add landing gear doors nose gear well Robarts scale wheels look good model adequately support Redigos weight however wheels require Robarts interna[ loam tire ~doublers Order direct manufacturer used 16-oz fuel tank Theres room second 1 6-oz tank smoke system desired ignition cutoff switch mounted forward firewall switch SAVE YOUR FIELD SNUF-LER muffler low cost easy Install lightweight sound reducing muffler no performance penalty answer AMA muffler rule suggestions saving flying fields Meets AMA muffler rule suggestions 3 10 decibels quieter stock muffler No power lose posaibie 300500 RPM increase Improves engine idle s better fuel economy Easily attached 25-108 atock mufflers Heat corrosion resistant Black E coat finish No special adapters required Weighs 35 oza Fits ASP BRAT ENYA FOX HP IRVINE K & B 05 MAX ROYAL YS SUPER TIGRE mufflers available hobby shop ORDER DIRECT immediate shipment Check MO Visa MC cooSEND 25i STAMP accepted Add 5250 UPS $200 COD t% sales tasFOR ADDITIONAL INFO Calif residentAND ITEC CATALOG 146 Model Aviation GO FLYING WITH COMPLETE ROLLING HANGER LIKE THIS NEW FAI TAN RUBBER 114 3/16 1/8 thick 1 lb box $1475 inciudes4oL Slick Lubel $1375 mo lube k costs *1751 10 lb box- $11000 ius Deliveredl Postpaid US vie UPS Cal res add 6% sales tax Made USA Slow cure consiatant quaifty Ask PAl-TAN 89190 catalog hate 100FF kitel CROCKET HOOKS~ NOW MADE BY SEND*150FA Model Supply FOR CATALOGnoneocEcsosboCARSON 0090745 nEc 213 830-8935 handle protrudes slightly through fiberglass cowl propeller Zinger 20 x 10 used Zinger 31/2in spun aluminum spinner Cut hole through cowl easy access carburetor Install air pressure filler valve retracts fuselage bottom nose section used B&B muffler Zenoah G-62 cutting cowl clearance around muffler Unfortunately noise level still pretty high dont know really effective commercially available mufflers fit G-62 add-on units such JTec Snuffler could hung externally below fuselage Wouldnt look good unless flying field location can tolerate noise might have quiet down Zenoah somehow Covering finishing duplicated color scheme original Redigo test aircraftgray overall contrasting areas black red yellow blue look scale yet somewhat understated As noted next Redigo will probably receive bright air-show aerobatic-type finish greater visual excitement large airplane large engine exact Scale comes pretty close Using retracts adds complexity amount scale detailing incorporated up builder Basically however can count airframe thats quick easy build fast aerobatic flight Redigo well suited sport flier wants large model hot performance Award Continued page 51 Frank wife Carmen enjoy leisurely retired life Northridge California have won additional fame annual reports detailing travels around country over world reports have become collector items friends privileged receive Looking back highlights very full life Frank recalls special pride early 1930s full-scale glider pilot pilots license signed Orville Wright Approximately 60 years later noted special distinction the NAA ceremony underscores pertinence NAA award 0 Rnaliy An Engine Mount tern Wont Shake Rattle Roll fly model planes dont have tell theres whole lotta shakin goin now theres something cando about Sullivan Flex Mount System Its engine mounting sys tem has specially designed rubber isolators absorb enine vibration reduce noise andi limit wear tear mode thats Flex-Mount comes aluminum adaptor plate makes easy mount 40 60 90 two-cycle engines firewall strap mount beam mounting four-cyde engines So dont jitterbug Thik dealer Sullivan Flex-Mount engine mount j ing system thought rock roll 7 PRODUCTS would never die Box51668alomorMD21224 Getting Better Ideas OtT Ground RC Aerobatics/Van Putte Continued page 71 Well tough dont favor increasing two-cycle limit above 61 because airplane size would go up stay competitive have enough trouble getting LA-l Ford Probe already personal favorite way promote twocycle vs four-cycle equity restrict fourcycle engine displacement 80 90 two-cycle technology seems about topped out cant keep engines together very long now replacing something other hand four-cycle engine technology still upsweep current 120 four-cycle restriction disparity between two-cycle four-cycle engines going get worse severe restriction four-cycle engine displacement reasonable Eric closed almost impossible legislate either morality economy competitive event However good judging think likely pilot flies better sequence will win contest cases agree anyone would like see complete copy Erics letter Id glad provide youll send SASE Prodigy would like send message ID CMFBO2B l 1992 147
Edition: Model Aviation - 1992/04
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 146, 147
NO OCR TEXT NO OCR TEXT Holding closely possible scale outlines drew up plans 94-in wingspan provided 1300 sq wing area figured would suit Quadra 50 Zenoah 0-62 engine retractable landing gear intentional deviation scale shorten nose length Otherwise model would probably have come out nose-heavy keep project relatively simple left off turbine exhaust stacks air scoop beneath cowl can add details choose Likewise decided flaps unnecessary because anticipated wing loading interested sport aircraft handles well aircraft thats precisely Scale three versions Valmet trainer L-70 L-8OTP L-9OTP would make good Scale projects intend draw up L-70 plans myself near future its barn door wing fixed landing gear shorter nosed piston engine L-70 would easier model build build Send stamped self-addressed envelope two stamps copies three three-view Left Bottoms-up view tail surfaces showing tail skid stabilizer elevators separate pushrods Right Close-up tail feathers model sitting its field stand Note sweptback fin rudder stabilizer elevators counterbalanced elevator 32 Model Aviation Having helped builder Lance Schneider author mold large clear plastic canopy Nick Ziroll Jr Sr now offer Item commercially fiberglass cowl available T&D Fiberglass Specialties Retractable landing gear shock-absorbing struts Impact Engineering add scale appearance Zenoah G-62 engine pushes craft Pattern league 20 x 10 prop spun aluminum spinner both Zinger two-seat cockpit has room two pas senger seats rear Designing model View radio installation Zenoah G-62 engine B&B muffler ImpacT engineering retractable landing gear Note retract gear air pressure filler fitting fuselage bottom next engine elevators have separate servo/pushrod installations Y-adapter used receiver Other servos throttle rudder nose gear steering I z BPLSfl 3HEET OVER OTh DICK S4RPOLz----~I ~auuruu EUWEW PLflSTIC CRNOP9 PILPbLEI FROM NICK ZROII MODE-i-S~7 S4LE -7 7JQBRLSR1141S OR -s I- SUPtO N RECIcL IrSPKING i BRLS SIDE5&O1TOM Ac FIREWOLL 4O op 5O ENGINE- OVER FORM CORE 4z HPRD4o PLY RISS FIBERGL5 COWL Fi T&D FI5ERGLPEE 0 0 drawings few photographs address 32 Alameda Ct Shrewsbury NJ 07702 Redigo uses familiar construction techniques well proven several earlier projects experience foam-cored wing tail surfaces quickest easiest way go scratch-built models size foam cores save great deal design time weight comes reasonable figure doubt built-up rib spar sheet structure sufficient strength could achieved comparable weight fuselage configuration its straight tapered tail section also lends itself use foam-cored upper portions wasnt difficult model design As noted except nose length exact scale outlines followed closely possible lighter weight choice among available large glow engines could probably keep nose length scale proportions scratch-built cowl shape should fairly easy duplicate fiberglass cowl however available T&D Fiberglass Specialties 38624 Mount Kisco Sterling Heights MI 48310 telephone 313 9782512 full-scale Rcdigo uses modified NACA 63-2 18 airfoil root modified NACA 63-4 12 tip root set 30 positive incidence wing has built-in 30 washout twist drawings possession judged airfoils too unusual appearance RC airplane Instead drew up nonscale fully symmetrical 16%-thick wing airfoil section similar others have achieved good aerobatic overall flying characteristics no service cutting foam cores available area recommend Aerosmith Model Aviation RD #1 Box 290 Athens NY 12015 telephone 518 945-1091 large clear plastic canopy presents single difficult challenge scratchbuilder undertaking project Ul PLEWBOB IREALL I2i REINFORCE FIREWALL i1i1I 11111 _____________ 217~ liii Locate PAILS TO SUIT RETRACTS USEDHARDWOOD TRIANGLE SroCK FIBERGLASS COWL AVAIL ABLE FROM TAO FIBERGLASS SPECIALTIES 3*820 MOUNT KISCO STERLING HEIGHTS MI BASID L12 SPINNER / 1'i JI 7 j4A 7i-~--ZENOAK GB USED IN PROTOTTPE ANT 00 OR ROtC ENGINE SHRUG 0 BE SGITADLB PCASIIC TANG NICK ZIROLI 20 EDGAR 0 SMITH TOWN FUEL TANK -BArn 1 -I PLT BALSA BLOCK VBA 3/4 HA NO WOOD RETRACT MOUNTING STRUT LOCATION WILL ART OCPINOING ON RETRACTS I OSEG LOCATE FARTHER FORWARD IF POSSIBLE FIXED OR RE big over 24 long 11 wide about 6 deep isnt easy find canopy vacuum-forming capability scope lucky Well-known modelers Nick Ziroli Jr Sr helped us out vacuum-forming equipment Lance carved plug pine boards glued together quite task Zirolis used pull few canopies us worry Zirolis now offering canopy commercially Details available Nick Ziroli Models 29 Edgar Drive Smithtown NY 11787 some doubts about using retractable landing gear concerned about added weight gear mechanisms need supporting structure worried about reliability retracts Also cost some money Lance builder decision thought clean aircraft layout would look good fly well wheels pulled up retracts way go found several types commercially available retracts thought suitable Dave Platt Impact Engineering designs both looked good finally used Impact gear along shock-absorbing struts same company scale appearance gear appear well designed 34 Model Aviation wing has turned upside down show retract mounting wheel well openings wing mounting thin aluminum gear doors secured silicone rubber Two ny lon bolts heavy plywood tab leading edge provide wing mounting third recess leading edge foreground nose gear retract forward-swept wing leading edge created slightly modifying standard foam-core cut ting techniques main panel cut conventionally notched accept separately cut forward extension piece foam core parts giued together sheeted usuai Full-Size Plans AvailableSee Page 196 S CLOTH AND EPOXY Ii _______ 7/H--I.4 111iiI1 IIrJAr BALSA SKEET ON FOAM LOBED TAIL SURFACES IB SODA RE IB BALSA,r BALSA DYERBLOCKS COCKPIT FLOORFDA/A CORE FUSELABE TOP BLOCKS AC BALSA ~-- // II -___- /tf CCII VER MD BALSASTOCKlAB BALSA DOUBLER I/IC PLY OSUOL IRSlAB PLr FINSBOTTOM IACDOTO HERE NYLON BOLTS USE rWO ELEVATOR SERVOS UB BALSAAB PLYWOODWITH SEPARATE LINKAGE VALMET L9OTP WINO SADDLE PIECESWINO MOUNT/NO PLATETO EACH SURFACE RED/GO TN/NUSE 0000 MUFFLER ALUMINUM0ON LABOC NOISY ENGINES DEAR DOORS OF THE FINNISO TRAINER AIRCRAFT DES/UNtO AND DRAWN BY VAL DICK SARPOLUS 0I2545B2 BB ID II IV SKEET OF 2 rugged enough job drawback forward location actuating cylinder nose gear unit Lance machined away portion some cylinder fins Zenoah G-62 provide clearance retract mechanism dont think will affect engine cant say retracts have completely trouble-free far thats probably because first production sets few bugs ran being may already have worked out Lance right plane looks flies great wheels tucked up however want save money simplify project go fixed gear prototype came out 221/2 lb anotwithstanding Redigo acrobaticis straightforward uses fewest parts wing loading almost 40 ox per sq ftand fast sleek look Stable yetpossible havent scratch-built Thats bit high models size canagile model flies like Pattern aircraftplans before assured fly higher wing loading still handlewith 0-62relatively easy project comfortably first flight awesome Lance covered design MonoKotegood pilot Redigos performanceWing foam core wing requires replicating color scheme theimpressed everyone Im convincedpreliminary step section wing root full-scale test aircraft Lance plans give athat Quadra 50 less powerfulis cut Out replaced separately cut future Redigo striking appearanceengine would deliver reasonable scaleforward extension piece provide very bright air show-type finish thitperformance 0-62 turns plane adistinctive swept-forward leading edge decidedly nonscaletigerangle new configuration similar Weve found Zenoah G-62 athe P-Si Mustang wing planform great engine Brand new turned 20 x io onstruction youve created leading edge Zinger 8400 rpm ground weforward sweep complete structure expected good flight performance WeTypical sheeted foam-and-balsa/plywoodyou would foam core wing werent disappointed Its large sizebuilt-tip construction used structure re sheeting wing insert several April 1992 35 RC Valmet Redigo Type Sport Scale Wingspan 94 Recommended engine size type Zenoah G-62 40-50cc engine would adequate Number RC channels recommended Five six using optional flaps Expected flying weight 221/2 lb Type construction Built-up foam-and-balsa/plywood Type coveringltlnish recommended MonoKote plywood ribs hardwood stub spars foam cores rceeivc support retract mechanisms Adjust location ribs mounting rails and/or spars stilt retracts being used Cut /8-in plywood rib inserts oversize mark trim hush fit foam cores Using hot wire cutting tools very sharp modeling knifc cut grooves loam spars retract mounting rails dihedral joiner Finally cut holes pneumatic lines course youve already built foam core wings model retracts may have worked out own method supporting retract mechanisms use fixed landing gear suggest wire gear legs least 1/4 installed typical grooved hardwood gear blocks secured plywood ribs Make stire grooved block extends center wing location 1/4-in plywood wing joiner should used Add shock-absorbing struts desired plywood ribs gear mounting provisions have glued foam coics youre ready sheet wing cores top bottom use /32 mediumweight balsa core sheeting edge gluing necessary achieve retltlired width As longtime user Dave I3rowns Southern Sorghum contact cement adhering sheeting foam cores know ean expect perfect results time Other builders successfully use epoxy glue thinly applied 3M 77 spray contact cement Sig Manufacturing products Trim off leading edges block sand square Add oversized balsa 0/HEONAL S k2 MVER EACH TIP I/R PLYWC CENTER RI BALSA BLOCK WING TIPS /__________________________ SCALE AILERON eCOiNlTERBALANCESHEET COMPLETE ICONFIGURATIONTHEN CUT AILEROI ANO FINISM ECUE PO 1f4 PLT WING MOUNT BULKHEAO /If4PLT RETRACT MOUNTING SUPPORT / / / I / // PLT FIREWALL leadine edge strip plane sand shape wing tips made shaping balsa blocks Since large light blocks difficult obtain glued smaller blocks together needed size Cut aileron sections sheeted wing panels trim down allow balsa edging sand edges shape Bevel aileron leading edges preparation hinging Install hinges either along centerline prototype along top edge Use large sturdy free-moving hinges dont skimp luantity choose include flaps cut appropriate sections wing finish off did ailerons 1-linge flaps along lower edge Cut recesses lower wing surface aileron servo mounting Glue mounts wing use piece /4-in steel rod aileron servo extension cables heating its end pushing through foam core fiom root aileron servo location Removable thin plywood hatches 36 Model Aviation Doing hard way dont have Starting 11 layers pine glued together author builder Lance Schneider carved pine block shape use Nick Ziroli Jr Sr plug vacuum forming Redigos large plastic canopy x I/B Builder Lance Schneider services large model Byrons Craft Cuddler Full-Size Plans AvailableSee Page 196 SHEET WING WITH 5J5 BALSA BGALSA LEADING EDGE I4 PLY WING MOUNTING KEY WRAP WING CENTER JOINT WITH HEAVY FIBERGLASS CLOTH AND EPOXY_____ _______FOAM CORE SECTIONFOR RETRACT WHEEL CLEARANCE F I/B PLYWOOD WING JOINER I/41 I/5 HARDWOOD TOP AND BOTTOM RECESS SPARS INTO FOAM CORE ORE TEMPLA TES S/BXJJE HARDWOOD RETRACT MOUNTING/ lit RAILS- TO SUIT/ RETRACTS USED 1 INSTALL AILERON SERVOS IN WING / WITH ACCESS HATCHES ON BOTTOM SURFACE - I/BPLY RIBS SET INTO FOAM CORE SCALE FLAP HINGE LINE IF DESIRED CORE TEMPLATES IBPL T WING RIBS CUT OVERSIZE TRIM FLUSH WITH FOAM CORE CUT OUT AS NEEDED FOR RETRACTS 7 7 7 HEADS WRAP CENTER SECTION WITH F GLASS CLOTH AND EPOXY FOAM REAR TOP FUSELAGE TEMPLATES S/52 BALSA SHEETING I/4 PLYWOOD WING JOINER __________RtDIG 0 FOAM FORWAHO TOP FUSELAGE TEMPLATES 5 '\ III 1 BALSAII LEADING EDGE I\ I / II Si / S / SHEET S OF can bC installed over scrvo areas positioning wing used /4jfl plywood wing mounting key leading edgc rather customary dowcls key reinforced plywood ribs near foamcore root like method because contact area thc fusciage bulkhead retains wing mount can trimmed shimmed necessaly achieve correct wing-to-fuselage fit sure plywood key extends barterinch forward leading edge since rests recess fuselage wing mount bulkhead Butt glue wing halves using plywood joiner plenty epoxy Wrap center joint heavy fiberglass cloth epoxy Fuselage Select lirm-to-hard balsa Is-in sides edge gluing splicing wood necessary sixe youll need Install /16 plywood doublers balsa wing saddle pieces stab saddle doublers balsa corner strips both fuselage sides Add bulkheads using plan top fuselage view guide assembly Youll need bevel edge /2-in plywood firewall lit properly curved sides Add /4-in plywood wing bolt plate pull tail end together install icar bulkheads keeping fuselage straight sides taper rear straight line wing trailing edge position tail ensuring straightcut foam top block will fit correctly balsa cockpit Iloor strengthens stiffens fuselage assembly Reinforce firewall installation heavy fiberglass cloth epoxy installing over hardwood trianll e stock behind firewall also install several small screws through sides firewall extra security against vibration large engine Sheet trim foam core top pieces /3 balsa glue place Before sheeting bottom cut holes rear bulkheads elevator rudder pushrods Its best postpone adding bottom planking until after tail surfaces have installed wing has fitted fuselage Fit wing fuselage adjusting fit wing mounting key bulkhead necessary Drill through wing trailing edge mounting bolts Tap plywood fuselage wing motint accept /42 nylon bolts youre usin enine other Zenoah G-62 may necessary install plywood spacers behind enine mount order properly locate propeller Ii xed andi uig gear attach heavy-duty nose strut plywood firewall retracts cut firewall necessary install hardwood mOuntino Till retract mechanism between firewall adjacent bulkhead Depending engine retracts used may have cut away some cooling fins engine cylinder head provide clearance retract unit nose wheel retracted completely enclosed fuselage portion protrudes bottom aircraft continued page 146 April 1992 37 CROSS SECTION cZZFIIzz FOAM STAB CORE TEMPLATES I/B BALSA BULKHEADS Wth Wells Cargo Behind. Never Look Back WELLS CARGO Rolling Hanger like makes sense serious RC model pilot has dependable weather-proof transport has convenient safe storage Bird wings spare props radio gear organized ready go Buzzin anytime weatherman says OK Cloud Dancer unit 12 foot ToteWagon model Weve got Wells Cargo just right 6 feet up 3 YR LIMITED WARRANTY PROGRAM FACTORY SERVICE POINTS A TX UTAH US WIDE DEALER SERVICE NETWORK BALL HITCH TRAILERS 6-32 GOOSE NECKS 0 1-800-348-7553 FOR LITERATURE PRICES DEALER & PLANT LOCATIONS SINCE S CARGO PO BOX flS-982ELKHART IN 46515-0728 Valmet Redigo/Sarpolus Continued page 37 fiberglass cowl trimmed necessary clear engine cylinder exhaust landing gear Tap fuselage sides threaded nylon bolts used mounting cowl wing bolted fuselage build up lower section glue wing bottom shape blend rear fuselage section Similarly shape balsa block contour bottom forward fuselage glue bottom wing SAY YOU SAW IT IN MODEL AVIATION Trim large plastic canopy fit secure small screws lower edges fuselage side Add simulated interior cockpit details suit Since Redigo set up two-person side-by-side training room two rear passenger seats up four figures could used extra realism Tail surfaces Sheet tail surface cores /32 balsa Join horizontal stabilizer panels reinforcing joint fiberglass cloth epoxy Cut surface apart along hinge lines allowing space added balsa edges Finish off edges install hinges glue stabilizer fuselage Glue vertical fin stabilizerand top fuselage piece rudder linkage can handled torque tube arrangement extending through stab since hookup pushrod will internal sure make secure Shape balsa blocks installed aft fuselage top side behind fin blocks place make three small fixed vertical fins attach fuselage bottom Control surfaces Recess control surfaces accept t/4-in plywood pieces mounting nylon horns ailerons elevators Epoxy plywood mounts control surfaces attach horns small screws recommend using larger 4-40 threaded rods devises linkages Use fiberglass tube pushrods elevator linkages Make fuselage servo mounting 1/4-in plywood elevators actuated separate servos its own pushrod allows pushrods perfectly straight Since pushrods cross over within fuselage elevator servos must mounted about I8 higher other prevent pushrods rubbing together Use aileron extension cables make Y-harness two aileron servos mounted wing Another Y-harness required two elevator servos used 1 200-mAh battery pack wrapped foam rubber positioned behind wing trailing edge its weight required balance Landing gear wheels engine fuel system appearance sake cut main landing gear doors thin aluminum affixed retract struts silicone adhesive may add landing gear doors nose gear well Robarts scale wheels look good model adequately support Redigos weight however wheels require Robarts interna[ loam tire ~doublers Order direct manufacturer used 16-oz fuel tank Theres room second 1 6-oz tank smoke system desired ignition cutoff switch mounted forward firewall switch SAVE YOUR FIELD SNUF-LER muffler low cost easy Install lightweight sound reducing muffler no performance penalty answer AMA muffler rule suggestions saving flying fields Meets AMA muffler rule suggestions 3 10 decibels quieter stock muffler No power lose posaibie 300500 RPM increase Improves engine idle s better fuel economy Easily attached 25-108 atock mufflers Heat corrosion resistant Black E coat finish No special adapters required Weighs 35 oza Fits ASP BRAT ENYA FOX HP IRVINE K & B 05 MAX ROYAL YS SUPER TIGRE mufflers available hobby shop ORDER DIRECT immediate shipment Check MO Visa MC cooSEND 25i STAMP accepted Add 5250 UPS $200 COD t% sales tasFOR ADDITIONAL INFO Calif residentAND ITEC CATALOG 146 Model Aviation GO FLYING WITH COMPLETE ROLLING HANGER LIKE THIS NEW FAI TAN RUBBER 114 3/16 1/8 thick 1 lb box $1475 inciudes4oL Slick Lubel $1375 mo lube k costs *1751 10 lb box- $11000 ius Deliveredl Postpaid US vie UPS Cal res add 6% sales tax Made USA Slow cure consiatant quaifty Ask PAl-TAN 89190 catalog hate 100FF kitel CROCKET HOOKS~ NOW MADE BY SEND*150FA Model Supply FOR CATALOGnoneocEcsosboCARSON 0090745 nEc 213 830-8935 handle protrudes slightly through fiberglass cowl propeller Zinger 20 x 10 used Zinger 31/2in spun aluminum spinner Cut hole through cowl easy access carburetor Install air pressure filler valve retracts fuselage bottom nose section used B&B muffler Zenoah G-62 cutting cowl clearance around muffler Unfortunately noise level still pretty high dont know really effective commercially available mufflers fit G-62 add-on units such JTec Snuffler could hung externally below fuselage Wouldnt look good unless flying field location can tolerate noise might have quiet down Zenoah somehow Covering finishing duplicated color scheme original Redigo test aircraftgray overall contrasting areas black red yellow blue look scale yet somewhat understated As noted next Redigo will probably receive bright air-show aerobatic-type finish greater visual excitement large airplane large engine exact Scale comes pretty close Using retracts adds complexity amount scale detailing incorporated up builder Basically however can count airframe thats quick easy build fast aerobatic flight Redigo well suited sport flier wants large model hot performance Award Continued page 51 Frank wife Carmen enjoy leisurely retired life Northridge California have won additional fame annual reports detailing travels around country over world reports have become collector items friends privileged receive Looking back highlights very full life Frank recalls special pride early 1930s full-scale glider pilot pilots license signed Orville Wright Approximately 60 years later noted special distinction the NAA ceremony underscores pertinence NAA award 0 Rnaliy An Engine Mount tern Wont Shake Rattle Roll fly model planes dont have tell theres whole lotta shakin goin now theres something cando about Sullivan Flex Mount System Its engine mounting sys tem has specially designed rubber isolators absorb enine vibration reduce noise andi limit wear tear mode thats Flex-Mount comes aluminum adaptor plate makes easy mount 40 60 90 two-cycle engines firewall strap mount beam mounting four-cyde engines So dont jitterbug Thik dealer Sullivan Flex-Mount engine mount j ing system thought rock roll 7 PRODUCTS would never die Box51668alomorMD21224 Getting Better Ideas OtT Ground RC Aerobatics/Van Putte Continued page 71 Well tough dont favor increasing two-cycle limit above 61 because airplane size would go up stay competitive have enough trouble getting LA-l Ford Probe already personal favorite way promote twocycle vs four-cycle equity restrict fourcycle engine displacement 80 90 two-cycle technology seems about topped out cant keep engines together very long now replacing something other hand four-cycle engine technology still upsweep current 120 four-cycle restriction disparity between two-cycle four-cycle engines going get worse severe restriction four-cycle engine displacement reasonable Eric closed almost impossible legislate either morality economy competitive event However good judging think likely pilot flies better sequence will win contest cases agree anyone would like see complete copy Erics letter Id glad provide youll send SASE Prodigy would like send message ID CMFBO2B l 1992 147
Edition: Model Aviation - 1992/04
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 146, 147
NO OCR TEXT NO OCR TEXT Holding closely possible scale outlines drew up plans 94-in wingspan provided 1300 sq wing area figured would suit Quadra 50 Zenoah 0-62 engine retractable landing gear intentional deviation scale shorten nose length Otherwise model would probably have come out nose-heavy keep project relatively simple left off turbine exhaust stacks air scoop beneath cowl can add details choose Likewise decided flaps unnecessary because anticipated wing loading interested sport aircraft handles well aircraft thats precisely Scale three versions Valmet trainer L-70 L-8OTP L-9OTP would make good Scale projects intend draw up L-70 plans myself near future its barn door wing fixed landing gear shorter nosed piston engine L-70 would easier model build build Send stamped self-addressed envelope two stamps copies three three-view Left Bottoms-up view tail surfaces showing tail skid stabilizer elevators separate pushrods Right Close-up tail feathers model sitting its field stand Note sweptback fin rudder stabilizer elevators counterbalanced elevator 32 Model Aviation Having helped builder Lance Schneider author mold large clear plastic canopy Nick Ziroll Jr Sr now offer Item commercially fiberglass cowl available T&D Fiberglass Specialties Retractable landing gear shock-absorbing struts Impact Engineering add scale appearance Zenoah G-62 engine pushes craft Pattern league 20 x 10 prop spun aluminum spinner both Zinger two-seat cockpit has room two pas senger seats rear Designing model View radio installation Zenoah G-62 engine B&B muffler ImpacT engineering retractable landing gear Note retract gear air pressure filler fitting fuselage bottom next engine elevators have separate servo/pushrod installations Y-adapter used receiver Other servos throttle rudder nose gear steering I z BPLSfl 3HEET OVER OTh DICK S4RPOLz----~I ~auuruu EUWEW PLflSTIC CRNOP9 PILPbLEI FROM NICK ZROII MODE-i-S~7 S4LE -7 7JQBRLSR1141S OR -s I- SUPtO N RECIcL IrSPKING i BRLS SIDE5&O1TOM Ac FIREWOLL 4O op 5O ENGINE- OVER FORM CORE 4z HPRD4o PLY RISS FIBERGL5 COWL Fi T&D FI5ERGLPEE 0 0 drawings few photographs address 32 Alameda Ct Shrewsbury NJ 07702 Redigo uses familiar construction techniques well proven several earlier projects experience foam-cored wing tail surfaces quickest easiest way go scratch-built models size foam cores save great deal design time weight comes reasonable figure doubt built-up rib spar sheet structure sufficient strength could achieved comparable weight fuselage configuration its straight tapered tail section also lends itself use foam-cored upper portions wasnt difficult model design As noted except nose length exact scale outlines followed closely possible lighter weight choice among available large glow engines could probably keep nose length scale proportions scratch-built cowl shape should fairly easy duplicate fiberglass cowl however available T&D Fiberglass Specialties 38624 Mount Kisco Sterling Heights MI 48310 telephone 313 9782512 full-scale Rcdigo uses modified NACA 63-2 18 airfoil root modified NACA 63-4 12 tip root set 30 positive incidence wing has built-in 30 washout twist drawings possession judged airfoils too unusual appearance RC airplane Instead drew up nonscale fully symmetrical 16%-thick wing airfoil section similar others have achieved good aerobatic overall flying characteristics no service cutting foam cores available area recommend Aerosmith Model Aviation RD #1 Box 290 Athens NY 12015 telephone 518 945-1091 large clear plastic canopy presents single difficult challenge scratchbuilder undertaking project Ul PLEWBOB IREALL I2i REINFORCE FIREWALL i1i1I 11111 _____________ 217~ liii Locate PAILS TO SUIT RETRACTS USEDHARDWOOD TRIANGLE SroCK FIBERGLASS COWL AVAIL ABLE FROM TAO FIBERGLASS SPECIALTIES 3*820 MOUNT KISCO STERLING HEIGHTS MI BASID L12 SPINNER / 1'i JI 7 j4A 7i-~--ZENOAK GB USED IN PROTOTTPE ANT 00 OR ROtC ENGINE SHRUG 0 BE SGITADLB PCASIIC TANG NICK ZIROLI 20 EDGAR 0 SMITH TOWN FUEL TANK -BArn 1 -I PLT BALSA BLOCK VBA 3/4 HA NO WOOD RETRACT MOUNTING STRUT LOCATION WILL ART OCPINOING ON RETRACTS I OSEG LOCATE FARTHER FORWARD IF POSSIBLE FIXED OR RE big over 24 long 11 wide about 6 deep isnt easy find canopy vacuum-forming capability scope lucky Well-known modelers Nick Ziroli Jr Sr helped us out vacuum-forming equipment Lance carved plug pine boards glued together quite task Zirolis used pull few canopies us worry Zirolis now offering canopy commercially Details available Nick Ziroli Models 29 Edgar Drive Smithtown NY 11787 some doubts about using retractable landing gear concerned about added weight gear mechanisms need supporting structure worried about reliability retracts Also cost some money Lance builder decision thought clean aircraft layout would look good fly well wheels pulled up retracts way go found several types commercially available retracts thought suitable Dave Platt Impact Engineering designs both looked good finally used Impact gear along shock-absorbing struts same company scale appearance gear appear well designed 34 Model Aviation wing has turned upside down show retract mounting wheel well openings wing mounting thin aluminum gear doors secured silicone rubber Two ny lon bolts heavy plywood tab leading edge provide wing mounting third recess leading edge foreground nose gear retract forward-swept wing leading edge created slightly modifying standard foam-core cut ting techniques main panel cut conventionally notched accept separately cut forward extension piece foam core parts giued together sheeted usuai Full-Size Plans AvailableSee Page 196 S CLOTH AND EPOXY Ii _______ 7/H--I.4 111iiI1 IIrJAr BALSA SKEET ON FOAM LOBED TAIL SURFACES IB SODA RE IB BALSA,r BALSA DYERBLOCKS COCKPIT FLOORFDA/A CORE FUSELABE TOP BLOCKS AC BALSA ~-- // II -___- /tf CCII VER MD BALSASTOCKlAB BALSA DOUBLER I/IC PLY OSUOL IRSlAB PLr FINSBOTTOM IACDOTO HERE NYLON BOLTS USE rWO ELEVATOR SERVOS UB BALSAAB PLYWOODWITH SEPARATE LINKAGE VALMET L9OTP WINO SADDLE PIECESWINO MOUNT/NO PLATETO EACH SURFACE RED/GO TN/NUSE 0000 MUFFLER ALUMINUM0ON LABOC NOISY ENGINES DEAR DOORS OF THE FINNISO TRAINER AIRCRAFT DES/UNtO AND DRAWN BY VAL DICK SARPOLUS 0I2545B2 BB ID II IV SKEET OF 2 rugged enough job drawback forward location actuating cylinder nose gear unit Lance machined away portion some cylinder fins Zenoah G-62 provide clearance retract mechanism dont think will affect engine cant say retracts have completely trouble-free far thats probably because first production sets few bugs ran being may already have worked out Lance right plane looks flies great wheels tucked up however want save money simplify project go fixed gear prototype came out 221/2 lb anotwithstanding Redigo acrobaticis straightforward uses fewest parts wing loading almost 40 ox per sq ftand fast sleek look Stable yetpossible havent scratch-built Thats bit high models size canagile model flies like Pattern aircraftplans before assured fly higher wing loading still handlewith 0-62relatively easy project comfortably first flight awesome Lance covered design MonoKotegood pilot Redigos performanceWing foam core wing requires replicating color scheme theimpressed everyone Im convincedpreliminary step section wing root full-scale test aircraft Lance plans give athat Quadra 50 less powerfulis cut Out replaced separately cut future Redigo striking appearanceengine would deliver reasonable scaleforward extension piece provide very bright air show-type finish thitperformance 0-62 turns plane adistinctive swept-forward leading edge decidedly nonscaletigerangle new configuration similar Weve found Zenoah G-62 athe P-Si Mustang wing planform great engine Brand new turned 20 x io onstruction youve created leading edge Zinger 8400 rpm ground weforward sweep complete structure expected good flight performance WeTypical sheeted foam-and-balsa/plywoodyou would foam core wing werent disappointed Its large sizebuilt-tip construction used structure re sheeting wing insert several April 1992 35 RC Valmet Redigo Type Sport Scale Wingspan 94 Recommended engine size type Zenoah G-62 40-50cc engine would adequate Number RC channels recommended Five six using optional flaps Expected flying weight 221/2 lb Type construction Built-up foam-and-balsa/plywood Type coveringltlnish recommended MonoKote plywood ribs hardwood stub spars foam cores rceeivc support retract mechanisms Adjust location ribs mounting rails and/or spars stilt retracts being used Cut /8-in plywood rib inserts oversize mark trim hush fit foam cores Using hot wire cutting tools very sharp modeling knifc cut grooves loam spars retract mounting rails dihedral joiner Finally cut holes pneumatic lines course youve already built foam core wings model retracts may have worked out own method supporting retract mechanisms use fixed landing gear suggest wire gear legs least 1/4 installed typical grooved hardwood gear blocks secured plywood ribs Make stire grooved block extends center wing location 1/4-in plywood wing joiner should used Add shock-absorbing struts desired plywood ribs gear mounting provisions have glued foam coics youre ready sheet wing cores top bottom use /32 mediumweight balsa core sheeting edge gluing necessary achieve retltlired width As longtime user Dave I3rowns Southern Sorghum contact cement adhering sheeting foam cores know ean expect perfect results time Other builders successfully use epoxy glue thinly applied 3M 77 spray contact cement Sig Manufacturing products Trim off leading edges block sand square Add oversized balsa 0/HEONAL S k2 MVER EACH TIP I/R PLYWC CENTER RI BALSA BLOCK WING TIPS /__________________________ SCALE AILERON eCOiNlTERBALANCESHEET COMPLETE ICONFIGURATIONTHEN CUT AILEROI ANO FINISM ECUE PO 1f4 PLT WING MOUNT BULKHEAO /If4PLT RETRACT MOUNTING SUPPORT / / / I / // PLT FIREWALL leadine edge strip plane sand shape wing tips made shaping balsa blocks Since large light blocks difficult obtain glued smaller blocks together needed size Cut aileron sections sheeted wing panels trim down allow balsa edging sand edges shape Bevel aileron leading edges preparation hinging Install hinges either along centerline prototype along top edge Use large sturdy free-moving hinges dont skimp luantity choose include flaps cut appropriate sections wing finish off did ailerons 1-linge flaps along lower edge Cut recesses lower wing surface aileron servo mounting Glue mounts wing use piece /4-in steel rod aileron servo extension cables heating its end pushing through foam core fiom root aileron servo location Removable thin plywood hatches 36 Model Aviation Doing hard way dont have Starting 11 layers pine glued together author builder Lance Schneider carved pine block shape use Nick Ziroli Jr Sr plug vacuum forming Redigos large plastic canopy x I/B Builder Lance Schneider services large model Byrons Craft Cuddler Full-Size Plans AvailableSee Page 196 SHEET WING WITH 5J5 BALSA BGALSA LEADING EDGE I4 PLY WING MOUNTING KEY WRAP WING CENTER JOINT WITH HEAVY FIBERGLASS CLOTH AND EPOXY_____ _______FOAM CORE SECTIONFOR RETRACT WHEEL CLEARANCE F I/B PLYWOOD WING JOINER I/41 I/5 HARDWOOD TOP AND BOTTOM RECESS SPARS INTO FOAM CORE ORE TEMPLA TES S/BXJJE HARDWOOD RETRACT MOUNTING/ lit RAILS- TO SUIT/ RETRACTS USED 1 INSTALL AILERON SERVOS IN WING / WITH ACCESS HATCHES ON BOTTOM SURFACE - I/BPLY RIBS SET INTO FOAM CORE SCALE FLAP HINGE LINE IF DESIRED CORE TEMPLATES IBPL T WING RIBS CUT OVERSIZE TRIM FLUSH WITH FOAM CORE CUT OUT AS NEEDED FOR RETRACTS 7 7 7 HEADS WRAP CENTER SECTION WITH F GLASS CLOTH AND EPOXY FOAM REAR TOP FUSELAGE TEMPLATES S/52 BALSA SHEETING I/4 PLYWOOD WING JOINER __________RtDIG 0 FOAM FORWAHO TOP FUSELAGE TEMPLATES 5 '\ III 1 BALSAII LEADING EDGE I\ I / II Si / S / SHEET S OF can bC installed over scrvo areas positioning wing used /4jfl plywood wing mounting key leading edgc rather customary dowcls key reinforced plywood ribs near foamcore root like method because contact area thc fusciage bulkhead retains wing mount can trimmed shimmed necessaly achieve correct wing-to-fuselage fit sure plywood key extends barterinch forward leading edge since rests recess fuselage wing mount bulkhead Butt glue wing halves using plywood joiner plenty epoxy Wrap center joint heavy fiberglass cloth epoxy Fuselage Select lirm-to-hard balsa Is-in sides edge gluing splicing wood necessary sixe youll need Install /16 plywood doublers balsa wing saddle pieces stab saddle doublers balsa corner strips both fuselage sides Add bulkheads using plan top fuselage view guide assembly Youll need bevel edge /2-in plywood firewall lit properly curved sides Add /4-in plywood wing bolt plate pull tail end together install icar bulkheads keeping fuselage straight sides taper rear straight line wing trailing edge position tail ensuring straightcut foam top block will fit correctly balsa cockpit Iloor strengthens stiffens fuselage assembly Reinforce firewall installation heavy fiberglass cloth epoxy installing over hardwood trianll e stock behind firewall also install several small screws through sides firewall extra security against vibration large engine Sheet trim foam core top pieces /3 balsa glue place Before sheeting bottom cut holes rear bulkheads elevator rudder pushrods Its best postpone adding bottom planking until after tail surfaces have installed wing has fitted fuselage Fit wing fuselage adjusting fit wing mounting key bulkhead necessary Drill through wing trailing edge mounting bolts Tap plywood fuselage wing motint accept /42 nylon bolts youre usin enine other Zenoah G-62 may necessary install plywood spacers behind enine mount order properly locate propeller Ii xed andi uig gear attach heavy-duty nose strut plywood firewall retracts cut firewall necessary install hardwood mOuntino Till retract mechanism between firewall adjacent bulkhead Depending engine retracts used may have cut away some cooling fins engine cylinder head provide clearance retract unit nose wheel retracted completely enclosed fuselage portion protrudes bottom aircraft continued page 146 April 1992 37 CROSS SECTION cZZFIIzz FOAM STAB CORE TEMPLATES I/B BALSA BULKHEADS Wth Wells Cargo Behind. Never Look Back WELLS CARGO Rolling Hanger like makes sense serious RC model pilot has dependable weather-proof transport has convenient safe storage Bird wings spare props radio gear organized ready go Buzzin anytime weatherman says OK Cloud Dancer unit 12 foot ToteWagon model Weve got Wells Cargo just right 6 feet up 3 YR LIMITED WARRANTY PROGRAM FACTORY SERVICE POINTS A TX UTAH US WIDE DEALER SERVICE NETWORK BALL HITCH TRAILERS 6-32 GOOSE NECKS 0 1-800-348-7553 FOR LITERATURE PRICES DEALER & PLANT LOCATIONS SINCE S CARGO PO BOX flS-982ELKHART IN 46515-0728 Valmet Redigo/Sarpolus Continued page 37 fiberglass cowl trimmed necessary clear engine cylinder exhaust landing gear Tap fuselage sides threaded nylon bolts used mounting cowl wing bolted fuselage build up lower section glue wing bottom shape blend rear fuselage section Similarly shape balsa block contour bottom forward fuselage glue bottom wing SAY YOU SAW IT IN MODEL AVIATION Trim large plastic canopy fit secure small screws lower edges fuselage side Add simulated interior cockpit details suit Since Redigo set up two-person side-by-side training room two rear passenger seats up four figures could used extra realism Tail surfaces Sheet tail surface cores /32 balsa Join horizontal stabilizer panels reinforcing joint fiberglass cloth epoxy Cut surface apart along hinge lines allowing space added balsa edges Finish off edges install hinges glue stabilizer fuselage Glue vertical fin stabilizerand top fuselage piece rudder linkage can handled torque tube arrangement extending through stab since hookup pushrod will internal sure make secure Shape balsa blocks installed aft fuselage top side behind fin blocks place make three small fixed vertical fins attach fuselage bottom Control surfaces Recess control surfaces accept t/4-in plywood pieces mounting nylon horns ailerons elevators Epoxy plywood mounts control surfaces attach horns small screws recommend using larger 4-40 threaded rods devises linkages Use fiberglass tube pushrods elevator linkages Make fuselage servo mounting 1/4-in plywood elevators actuated separate servos its own pushrod allows pushrods perfectly straight Since pushrods cross over within fuselage elevator servos must mounted about I8 higher other prevent pushrods rubbing together Use aileron extension cables make Y-harness two aileron servos mounted wing Another Y-harness required two elevator servos used 1 200-mAh battery pack wrapped foam rubber positioned behind wing trailing edge its weight required balance Landing gear wheels engine fuel system appearance sake cut main landing gear doors thin aluminum affixed retract struts silicone adhesive may add landing gear doors nose gear well Robarts scale wheels look good model adequately support Redigos weight however wheels require Robarts interna[ loam tire ~doublers Order direct manufacturer used 16-oz fuel tank Theres room second 1 6-oz tank smoke system desired ignition cutoff switch mounted forward firewall switch SAVE YOUR FIELD SNUF-LER muffler low cost easy Install lightweight sound reducing muffler no performance penalty answer AMA muffler rule suggestions saving flying fields Meets AMA muffler rule suggestions 3 10 decibels quieter stock muffler No power lose posaibie 300500 RPM increase Improves engine idle s better fuel economy Easily attached 25-108 atock mufflers Heat corrosion resistant Black E coat finish No special adapters required Weighs 35 oza Fits ASP BRAT ENYA FOX HP IRVINE K & B 05 MAX ROYAL YS SUPER TIGRE mufflers available hobby shop ORDER DIRECT immediate shipment Check MO Visa MC cooSEND 25i STAMP accepted Add 5250 UPS $200 COD t% sales tasFOR ADDITIONAL INFO Calif residentAND ITEC CATALOG 146 Model Aviation GO FLYING WITH COMPLETE ROLLING HANGER LIKE THIS NEW FAI TAN RUBBER 114 3/16 1/8 thick 1 lb box $1475 inciudes4oL Slick Lubel $1375 mo lube k costs *1751 10 lb box- $11000 ius Deliveredl Postpaid US vie UPS Cal res add 6% sales tax Made USA Slow cure consiatant quaifty Ask PAl-TAN 89190 catalog hate 100FF kitel CROCKET HOOKS~ NOW MADE BY SEND*150FA Model Supply FOR CATALOGnoneocEcsosboCARSON 0090745 nEc 213 830-8935 handle protrudes slightly through fiberglass cowl propeller Zinger 20 x 10 used Zinger 31/2in spun aluminum spinner Cut hole through cowl easy access carburetor Install air pressure filler valve retracts fuselage bottom nose section used B&B muffler Zenoah G-62 cutting cowl clearance around muffler Unfortunately noise level still pretty high dont know really effective commercially available mufflers fit G-62 add-on units such JTec Snuffler could hung externally below fuselage Wouldnt look good unless flying field location can tolerate noise might have quiet down Zenoah somehow Covering finishing duplicated color scheme original Redigo test aircraftgray overall contrasting areas black red yellow blue look scale yet somewhat understated As noted next Redigo will probably receive bright air-show aerobatic-type finish greater visual excitement large airplane large engine exact Scale comes pretty close Using retracts adds complexity amount scale detailing incorporated up builder Basically however can count airframe thats quick easy build fast aerobatic flight Redigo well suited sport flier wants large model hot performance Award Continued page 51 Frank wife Carmen enjoy leisurely retired life Northridge California have won additional fame annual reports detailing travels around country over world reports have become collector items friends privileged receive Looking back highlights very full life Frank recalls special pride early 1930s full-scale glider pilot pilots license signed Orville Wright Approximately 60 years later noted special distinction the NAA ceremony underscores pertinence NAA award 0 Rnaliy An Engine Mount tern Wont Shake Rattle Roll fly model planes dont have tell theres whole lotta shakin goin now theres something cando about Sullivan Flex Mount System Its engine mounting sys tem has specially designed rubber isolators absorb enine vibration reduce noise andi limit wear tear mode thats Flex-Mount comes aluminum adaptor plate makes easy mount 40 60 90 two-cycle engines firewall strap mount beam mounting four-cyde engines So dont jitterbug Thik dealer Sullivan Flex-Mount engine mount j ing system thought rock roll 7 PRODUCTS would never die Box51668alomorMD21224 Getting Better Ideas OtT Ground RC Aerobatics/Van Putte Continued page 71 Well tough dont favor increasing two-cycle limit above 61 because airplane size would go up stay competitive have enough trouble getting LA-l Ford Probe already personal favorite way promote twocycle vs four-cycle equity restrict fourcycle engine displacement 80 90 two-cycle technology seems about topped out cant keep engines together very long now replacing something other hand four-cycle engine technology still upsweep current 120 four-cycle restriction disparity between two-cycle four-cycle engines going get worse severe restriction four-cycle engine displacement reasonable Eric closed almost impossible legislate either morality economy competitive event However good judging think likely pilot flies better sequence will win contest cases agree anyone would like see complete copy Erics letter Id glad provide youll send SASE Prodigy would like send message ID CMFBO2B l 1992 147
Edition: Model Aviation - 1992/04
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 146, 147
NO OCR TEXT NO OCR TEXT Holding closely possible scale outlines drew up plans 94-in wingspan provided 1300 sq wing area figured would suit Quadra 50 Zenoah 0-62 engine retractable landing gear intentional deviation scale shorten nose length Otherwise model would probably have come out nose-heavy keep project relatively simple left off turbine exhaust stacks air scoop beneath cowl can add details choose Likewise decided flaps unnecessary because anticipated wing loading interested sport aircraft handles well aircraft thats precisely Scale three versions Valmet trainer L-70 L-8OTP L-9OTP would make good Scale projects intend draw up L-70 plans myself near future its barn door wing fixed landing gear shorter nosed piston engine L-70 would easier model build build Send stamped self-addressed envelope two stamps copies three three-view Left Bottoms-up view tail surfaces showing tail skid stabilizer elevators separate pushrods Right Close-up tail feathers model sitting its field stand Note sweptback fin rudder stabilizer elevators counterbalanced elevator 32 Model Aviation Having helped builder Lance Schneider author mold large clear plastic canopy Nick Ziroll Jr Sr now offer Item commercially fiberglass cowl available T&D Fiberglass Specialties Retractable landing gear shock-absorbing struts Impact Engineering add scale appearance Zenoah G-62 engine pushes craft Pattern league 20 x 10 prop spun aluminum spinner both Zinger two-seat cockpit has room two pas senger seats rear Designing model View radio installation Zenoah G-62 engine B&B muffler ImpacT engineering retractable landing gear Note retract gear air pressure filler fitting fuselage bottom next engine elevators have separate servo/pushrod installations Y-adapter used receiver Other servos throttle rudder nose gear steering I z BPLSfl 3HEET OVER OTh DICK S4RPOLz----~I ~auuruu EUWEW PLflSTIC CRNOP9 PILPbLEI FROM NICK ZROII MODE-i-S~7 S4LE -7 7JQBRLSR1141S OR -s I- SUPtO N RECIcL IrSPKING i BRLS SIDE5&O1TOM Ac FIREWOLL 4O op 5O ENGINE- OVER FORM CORE 4z HPRD4o PLY RISS FIBERGL5 COWL Fi T&D FI5ERGLPEE 0 0 drawings few photographs address 32 Alameda Ct Shrewsbury NJ 07702 Redigo uses familiar construction techniques well proven several earlier projects experience foam-cored wing tail surfaces quickest easiest way go scratch-built models size foam cores save great deal design time weight comes reasonable figure doubt built-up rib spar sheet structure sufficient strength could achieved comparable weight fuselage configuration its straight tapered tail section also lends itself use foam-cored upper portions wasnt difficult model design As noted except nose length exact scale outlines followed closely possible lighter weight choice among available large glow engines could probably keep nose length scale proportions scratch-built cowl shape should fairly easy duplicate fiberglass cowl however available T&D Fiberglass Specialties 38624 Mount Kisco Sterling Heights MI 48310 telephone 313 9782512 full-scale Rcdigo uses modified NACA 63-2 18 airfoil root modified NACA 63-4 12 tip root set 30 positive incidence wing has built-in 30 washout twist drawings possession judged airfoils too unusual appearance RC airplane Instead drew up nonscale fully symmetrical 16%-thick wing airfoil section similar others have achieved good aerobatic overall flying characteristics no service cutting foam cores available area recommend Aerosmith Model Aviation RD #1 Box 290 Athens NY 12015 telephone 518 945-1091 large clear plastic canopy presents single difficult challenge scratchbuilder undertaking project Ul PLEWBOB IREALL I2i REINFORCE FIREWALL i1i1I 11111 _____________ 217~ liii Locate PAILS TO SUIT RETRACTS USEDHARDWOOD TRIANGLE SroCK FIBERGLASS COWL AVAIL ABLE FROM TAO FIBERGLASS SPECIALTIES 3*820 MOUNT KISCO STERLING HEIGHTS MI BASID L12 SPINNER / 1'i JI 7 j4A 7i-~--ZENOAK GB USED IN PROTOTTPE ANT 00 OR ROtC ENGINE SHRUG 0 BE SGITADLB PCASIIC TANG NICK ZIROLI 20 EDGAR 0 SMITH TOWN FUEL TANK -BArn 1 -I PLT BALSA BLOCK VBA 3/4 HA NO WOOD RETRACT MOUNTING STRUT LOCATION WILL ART OCPINOING ON RETRACTS I OSEG LOCATE FARTHER FORWARD IF POSSIBLE FIXED OR RE big over 24 long 11 wide about 6 deep isnt easy find canopy vacuum-forming capability scope lucky Well-known modelers Nick Ziroli Jr Sr helped us out vacuum-forming equipment Lance carved plug pine boards glued together quite task Zirolis used pull few canopies us worry Zirolis now offering canopy commercially Details available Nick Ziroli Models 29 Edgar Drive Smithtown NY 11787 some doubts about using retractable landing gear concerned about added weight gear mechanisms need supporting structure worried about reliability retracts Also cost some money Lance builder decision thought clean aircraft layout would look good fly well wheels pulled up retracts way go found several types commercially available retracts thought suitable Dave Platt Impact Engineering designs both looked good finally used Impact gear along shock-absorbing struts same company scale appearance gear appear well designed 34 Model Aviation wing has turned upside down show retract mounting wheel well openings wing mounting thin aluminum gear doors secured silicone rubber Two ny lon bolts heavy plywood tab leading edge provide wing mounting third recess leading edge foreground nose gear retract forward-swept wing leading edge created slightly modifying standard foam-core cut ting techniques main panel cut conventionally notched accept separately cut forward extension piece foam core parts giued together sheeted usuai Full-Size Plans AvailableSee Page 196 S CLOTH AND EPOXY Ii _______ 7/H--I.4 111iiI1 IIrJAr BALSA SKEET ON FOAM LOBED TAIL SURFACES IB SODA RE IB BALSA,r BALSA DYERBLOCKS COCKPIT FLOORFDA/A CORE FUSELABE TOP BLOCKS AC BALSA ~-- // II -___- /tf CCII VER MD BALSASTOCKlAB BALSA DOUBLER I/IC PLY OSUOL IRSlAB PLr FINSBOTTOM IACDOTO HERE NYLON BOLTS USE rWO ELEVATOR SERVOS UB BALSAAB PLYWOODWITH SEPARATE LINKAGE VALMET L9OTP WINO SADDLE PIECESWINO MOUNT/NO PLATETO EACH SURFACE RED/GO TN/NUSE 0000 MUFFLER ALUMINUM0ON LABOC NOISY ENGINES DEAR DOORS OF THE FINNISO TRAINER AIRCRAFT DES/UNtO AND DRAWN BY VAL DICK SARPOLUS 0I2545B2 BB ID II IV SKEET OF 2 rugged enough job drawback forward location actuating cylinder nose gear unit Lance machined away portion some cylinder fins Zenoah G-62 provide clearance retract mechanism dont think will affect engine cant say retracts have completely trouble-free far thats probably because first production sets few bugs ran being may already have worked out Lance right plane looks flies great wheels tucked up however want save money simplify project go fixed gear prototype came out 221/2 lb anotwithstanding Redigo acrobaticis straightforward uses fewest parts wing loading almost 40 ox per sq ftand fast sleek look Stable yetpossible havent scratch-built Thats bit high models size canagile model flies like Pattern aircraftplans before assured fly higher wing loading still handlewith 0-62relatively easy project comfortably first flight awesome Lance covered design MonoKotegood pilot Redigos performanceWing foam core wing requires replicating color scheme theimpressed everyone Im convincedpreliminary step section wing root full-scale test aircraft Lance plans give athat Quadra 50 less powerfulis cut Out replaced separately cut future Redigo striking appearanceengine would deliver reasonable scaleforward extension piece provide very bright air show-type finish thitperformance 0-62 turns plane adistinctive swept-forward leading edge decidedly nonscaletigerangle new configuration similar Weve found Zenoah G-62 athe P-Si Mustang wing planform great engine Brand new turned 20 x io onstruction youve created leading edge Zinger 8400 rpm ground weforward sweep complete structure expected good flight performance WeTypical sheeted foam-and-balsa/plywoodyou would foam core wing werent disappointed Its large sizebuilt-tip construction used structure re sheeting wing insert several April 1992 35 RC Valmet Redigo Type Sport Scale Wingspan 94 Recommended engine size type Zenoah G-62 40-50cc engine would adequate Number RC channels recommended Five six using optional flaps Expected flying weight 221/2 lb Type construction Built-up foam-and-balsa/plywood Type coveringltlnish recommended MonoKote plywood ribs hardwood stub spars foam cores rceeivc support retract mechanisms Adjust location ribs mounting rails and/or spars stilt retracts being used Cut /8-in plywood rib inserts oversize mark trim hush fit foam cores Using hot wire cutting tools very sharp modeling knifc cut grooves loam spars retract mounting rails dihedral joiner Finally cut holes pneumatic lines course youve already built foam core wings model retracts may have worked out own method supporting retract mechanisms use fixed landing gear suggest wire gear legs least 1/4 installed typical grooved hardwood gear blocks secured plywood ribs Make stire grooved block extends center wing location 1/4-in plywood wing joiner should used Add shock-absorbing struts desired plywood ribs gear mounting provisions have glued foam coics youre ready sheet wing cores top bottom use /32 mediumweight balsa core sheeting edge gluing necessary achieve retltlired width As longtime user Dave I3rowns Southern Sorghum contact cement adhering sheeting foam cores know ean expect perfect results time Other builders successfully use epoxy glue thinly applied 3M 77 spray contact cement Sig Manufacturing products Trim off leading edges block sand square Add oversized balsa 0/HEONAL S k2 MVER EACH TIP I/R PLYWC CENTER RI BALSA BLOCK WING TIPS /__________________________ SCALE AILERON eCOiNlTERBALANCESHEET COMPLETE ICONFIGURATIONTHEN CUT AILEROI ANO FINISM ECUE PO 1f4 PLT WING MOUNT BULKHEAO /If4PLT RETRACT MOUNTING SUPPORT / / / I / // PLT FIREWALL leadine edge strip plane sand shape wing tips made shaping balsa blocks Since large light blocks difficult obtain glued smaller blocks together needed size Cut aileron sections sheeted wing panels trim down allow balsa edging sand edges shape Bevel aileron leading edges preparation hinging Install hinges either along centerline prototype along top edge Use large sturdy free-moving hinges dont skimp luantity choose include flaps cut appropriate sections wing finish off did ailerons 1-linge flaps along lower edge Cut recesses lower wing surface aileron servo mounting Glue mounts wing use piece /4-in steel rod aileron servo extension cables heating its end pushing through foam core fiom root aileron servo location Removable thin plywood hatches 36 Model Aviation Doing hard way dont have Starting 11 layers pine glued together author builder Lance Schneider carved pine block shape use Nick Ziroli Jr Sr plug vacuum forming Redigos large plastic canopy x I/B Builder Lance Schneider services large model Byrons Craft Cuddler Full-Size Plans AvailableSee Page 196 SHEET WING WITH 5J5 BALSA BGALSA LEADING EDGE I4 PLY WING MOUNTING KEY WRAP WING CENTER JOINT WITH HEAVY FIBERGLASS CLOTH AND EPOXY_____ _______FOAM CORE SECTIONFOR RETRACT WHEEL CLEARANCE F I/B PLYWOOD WING JOINER I/41 I/5 HARDWOOD TOP AND BOTTOM RECESS SPARS INTO FOAM CORE ORE TEMPLA TES S/BXJJE HARDWOOD RETRACT MOUNTING/ lit RAILS- TO SUIT/ RETRACTS USED 1 INSTALL AILERON SERVOS IN WING / WITH ACCESS HATCHES ON BOTTOM SURFACE - I/BPLY RIBS SET INTO FOAM CORE SCALE FLAP HINGE LINE IF DESIRED CORE TEMPLATES IBPL T WING RIBS CUT OVERSIZE TRIM FLUSH WITH FOAM CORE CUT OUT AS NEEDED FOR RETRACTS 7 7 7 HEADS WRAP CENTER SECTION WITH F GLASS CLOTH AND EPOXY FOAM REAR TOP FUSELAGE TEMPLATES S/52 BALSA SHEETING I/4 PLYWOOD WING JOINER __________RtDIG 0 FOAM FORWAHO TOP FUSELAGE TEMPLATES 5 '\ III 1 BALSAII LEADING EDGE I\ I / II Si / S / SHEET S OF can bC installed over scrvo areas positioning wing used /4jfl plywood wing mounting key leading edgc rather customary dowcls key reinforced plywood ribs near foamcore root like method because contact area thc fusciage bulkhead retains wing mount can trimmed shimmed necessaly achieve correct wing-to-fuselage fit sure plywood key extends barterinch forward leading edge since rests recess fuselage wing mount bulkhead Butt glue wing halves using plywood joiner plenty epoxy Wrap center joint heavy fiberglass cloth epoxy Fuselage Select lirm-to-hard balsa Is-in sides edge gluing splicing wood necessary sixe youll need Install /16 plywood doublers balsa wing saddle pieces stab saddle doublers balsa corner strips both fuselage sides Add bulkheads using plan top fuselage view guide assembly Youll need bevel edge /2-in plywood firewall lit properly curved sides Add /4-in plywood wing bolt plate pull tail end together install icar bulkheads keeping fuselage straight sides taper rear straight line wing trailing edge position tail ensuring straightcut foam top block will fit correctly balsa cockpit Iloor strengthens stiffens fuselage assembly Reinforce firewall installation heavy fiberglass cloth epoxy installing over hardwood trianll e stock behind firewall also install several small screws through sides firewall extra security against vibration large engine Sheet trim foam core top pieces /3 balsa glue place Before sheeting bottom cut holes rear bulkheads elevator rudder pushrods Its best postpone adding bottom planking until after tail surfaces have installed wing has fitted fuselage Fit wing fuselage adjusting fit wing mounting key bulkhead necessary Drill through wing trailing edge mounting bolts Tap plywood fuselage wing motint accept /42 nylon bolts youre usin enine other Zenoah G-62 may necessary install plywood spacers behind enine mount order properly locate propeller Ii xed andi uig gear attach heavy-duty nose strut plywood firewall retracts cut firewall necessary install hardwood mOuntino Till retract mechanism between firewall adjacent bulkhead Depending engine retracts used may have cut away some cooling fins engine cylinder head provide clearance retract unit nose wheel retracted completely enclosed fuselage portion protrudes bottom aircraft continued page 146 April 1992 37 CROSS SECTION cZZFIIzz FOAM STAB CORE TEMPLATES I/B BALSA BULKHEADS Wth Wells Cargo Behind. Never Look Back WELLS CARGO Rolling Hanger like makes sense serious RC model pilot has dependable weather-proof transport has convenient safe storage Bird wings spare props radio gear organized ready go Buzzin anytime weatherman says OK Cloud Dancer unit 12 foot ToteWagon model Weve got Wells Cargo just right 6 feet up 3 YR LIMITED WARRANTY PROGRAM FACTORY SERVICE POINTS A TX UTAH US WIDE DEALER SERVICE NETWORK BALL HITCH TRAILERS 6-32 GOOSE NECKS 0 1-800-348-7553 FOR LITERATURE PRICES DEALER & PLANT LOCATIONS SINCE S CARGO PO BOX flS-982ELKHART IN 46515-0728 Valmet Redigo/Sarpolus Continued page 37 fiberglass cowl trimmed necessary clear engine cylinder exhaust landing gear Tap fuselage sides threaded nylon bolts used mounting cowl wing bolted fuselage build up lower section glue wing bottom shape blend rear fuselage section Similarly shape balsa block contour bottom forward fuselage glue bottom wing SAY YOU SAW IT IN MODEL AVIATION Trim large plastic canopy fit secure small screws lower edges fuselage side Add simulated interior cockpit details suit Since Redigo set up two-person side-by-side training room two rear passenger seats up four figures could used extra realism Tail surfaces Sheet tail surface cores /32 balsa Join horizontal stabilizer panels reinforcing joint fiberglass cloth epoxy Cut surface apart along hinge lines allowing space added balsa edges Finish off edges install hinges glue stabilizer fuselage Glue vertical fin stabilizerand top fuselage piece rudder linkage can handled torque tube arrangement extending through stab since hookup pushrod will internal sure make secure Shape balsa blocks installed aft fuselage top side behind fin blocks place make three small fixed vertical fins attach fuselage bottom Control surfaces Recess control surfaces accept t/4-in plywood pieces mounting nylon horns ailerons elevators Epoxy plywood mounts control surfaces attach horns small screws recommend using larger 4-40 threaded rods devises linkages Use fiberglass tube pushrods elevator linkages Make fuselage servo mounting 1/4-in plywood elevators actuated separate servos its own pushrod allows pushrods perfectly straight Since pushrods cross over within fuselage elevator servos must mounted about I8 higher other prevent pushrods rubbing together Use aileron extension cables make Y-harness two aileron servos mounted wing Another Y-harness required two elevator servos used 1 200-mAh battery pack wrapped foam rubber positioned behind wing trailing edge its weight required balance Landing gear wheels engine fuel system appearance sake cut main landing gear doors thin aluminum affixed retract struts silicone adhesive may add landing gear doors nose gear well Robarts scale wheels look good model adequately support Redigos weight however wheels require Robarts interna[ loam tire ~doublers Order direct manufacturer used 16-oz fuel tank Theres room second 1 6-oz tank smoke system desired ignition cutoff switch mounted forward firewall switch SAVE YOUR FIELD SNUF-LER muffler low cost easy Install lightweight sound reducing muffler no performance penalty answer AMA muffler rule suggestions saving flying fields Meets AMA muffler rule suggestions 3 10 decibels quieter stock muffler No power lose posaibie 300500 RPM increase Improves engine idle s better fuel economy Easily attached 25-108 atock mufflers Heat corrosion resistant Black E coat finish No special adapters required Weighs 35 oza Fits ASP BRAT ENYA FOX HP IRVINE K & B 05 MAX ROYAL YS SUPER TIGRE mufflers available hobby shop ORDER DIRECT immediate shipment Check MO Visa MC cooSEND 25i STAMP accepted Add 5250 UPS $200 COD t% sales tasFOR ADDITIONAL INFO Calif residentAND ITEC CATALOG 146 Model Aviation GO FLYING WITH COMPLETE ROLLING HANGER LIKE THIS NEW FAI TAN RUBBER 114 3/16 1/8 thick 1 lb box $1475 inciudes4oL Slick Lubel $1375 mo lube k costs *1751 10 lb box- $11000 ius Deliveredl Postpaid US vie UPS Cal res add 6% sales tax Made USA Slow cure consiatant quaifty Ask PAl-TAN 89190 catalog hate 100FF kitel CROCKET HOOKS~ NOW MADE BY SEND*150FA Model Supply FOR CATALOGnoneocEcsosboCARSON 0090745 nEc 213 830-8935 handle protrudes slightly through fiberglass cowl propeller Zinger 20 x 10 used Zinger 31/2in spun aluminum spinner Cut hole through cowl easy access carburetor Install air pressure filler valve retracts fuselage bottom nose section used B&B muffler Zenoah G-62 cutting cowl clearance around muffler Unfortunately noise level still pretty high dont know really effective commercially available mufflers fit G-62 add-on units such JTec Snuffler could hung externally below fuselage Wouldnt look good unless flying field location can tolerate noise might have quiet down Zenoah somehow Covering finishing duplicated color scheme original Redigo test aircraftgray overall contrasting areas black red yellow blue look scale yet somewhat understated As noted next Redigo will probably receive bright air-show aerobatic-type finish greater visual excitement large airplane large engine exact Scale comes pretty close Using retracts adds complexity amount scale detailing incorporated up builder Basically however can count airframe thats quick easy build fast aerobatic flight Redigo well suited sport flier wants large model hot performance Award Continued page 51 Frank wife Carmen enjoy leisurely retired life Northridge California have won additional fame annual reports detailing travels around country over world reports have become collector items friends privileged receive Looking back highlights very full life Frank recalls special pride early 1930s full-scale glider pilot pilots license signed Orville Wright Approximately 60 years later noted special distinction the NAA ceremony underscores pertinence NAA award 0 Rnaliy An Engine Mount tern Wont Shake Rattle Roll fly model planes dont have tell theres whole lotta shakin goin now theres something cando about Sullivan Flex Mount System Its engine mounting sys tem has specially designed rubber isolators absorb enine vibration reduce noise andi limit wear tear mode thats Flex-Mount comes aluminum adaptor plate makes easy mount 40 60 90 two-cycle engines firewall strap mount beam mounting four-cyde engines So dont jitterbug Thik dealer Sullivan Flex-Mount engine mount j ing system thought rock roll 7 PRODUCTS would never die Box51668alomorMD21224 Getting Better Ideas OtT Ground RC Aerobatics/Van Putte Continued page 71 Well tough dont favor increasing two-cycle limit above 61 because airplane size would go up stay competitive have enough trouble getting LA-l Ford Probe already personal favorite way promote twocycle vs four-cycle equity restrict fourcycle engine displacement 80 90 two-cycle technology seems about topped out cant keep engines together very long now replacing something other hand four-cycle engine technology still upsweep current 120 four-cycle restriction disparity between two-cycle four-cycle engines going get worse severe restriction four-cycle engine displacement reasonable Eric closed almost impossible legislate either morality economy competitive event However good judging think likely pilot flies better sequence will win contest cases agree anyone would like see complete copy Erics letter Id glad provide youll send SASE Prodigy would like send message ID CMFBO2B l 1992 147
Edition: Model Aviation - 1992/04
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 146, 147
NO OCR TEXT NO OCR TEXT Holding closely possible scale outlines drew up plans 94-in wingspan provided 1300 sq wing area figured would suit Quadra 50 Zenoah 0-62 engine retractable landing gear intentional deviation scale shorten nose length Otherwise model would probably have come out nose-heavy keep project relatively simple left off turbine exhaust stacks air scoop beneath cowl can add details choose Likewise decided flaps unnecessary because anticipated wing loading interested sport aircraft handles well aircraft thats precisely Scale three versions Valmet trainer L-70 L-8OTP L-9OTP would make good Scale projects intend draw up L-70 plans myself near future its barn door wing fixed landing gear shorter nosed piston engine L-70 would easier model build build Send stamped self-addressed envelope two stamps copies three three-view Left Bottoms-up view tail surfaces showing tail skid stabilizer elevators separate pushrods Right Close-up tail feathers model sitting its field stand Note sweptback fin rudder stabilizer elevators counterbalanced elevator 32 Model Aviation Having helped builder Lance Schneider author mold large clear plastic canopy Nick Ziroll Jr Sr now offer Item commercially fiberglass cowl available T&D Fiberglass Specialties Retractable landing gear shock-absorbing struts Impact Engineering add scale appearance Zenoah G-62 engine pushes craft Pattern league 20 x 10 prop spun aluminum spinner both Zinger two-seat cockpit has room two pas senger seats rear Designing model View radio installation Zenoah G-62 engine B&B muffler ImpacT engineering retractable landing gear Note retract gear air pressure filler fitting fuselage bottom next engine elevators have separate servo/pushrod installations Y-adapter used receiver Other servos throttle rudder nose gear steering I z BPLSfl 3HEET OVER OTh DICK S4RPOLz----~I ~auuruu EUWEW PLflSTIC CRNOP9 PILPbLEI FROM NICK ZROII MODE-i-S~7 S4LE -7 7JQBRLSR1141S OR -s I- SUPtO N RECIcL IrSPKING i BRLS SIDE5&O1TOM Ac FIREWOLL 4O op 5O ENGINE- OVER FORM CORE 4z HPRD4o PLY RISS FIBERGL5 COWL Fi T&D FI5ERGLPEE 0 0 drawings few photographs address 32 Alameda Ct Shrewsbury NJ 07702 Redigo uses familiar construction techniques well proven several earlier projects experience foam-cored wing tail surfaces quickest easiest way go scratch-built models size foam cores save great deal design time weight comes reasonable figure doubt built-up rib spar sheet structure sufficient strength could achieved comparable weight fuselage configuration its straight tapered tail section also lends itself use foam-cored upper portions wasnt difficult model design As noted except nose length exact scale outlines followed closely possible lighter weight choice among available large glow engines could probably keep nose length scale proportions scratch-built cowl shape should fairly easy duplicate fiberglass cowl however available T&D Fiberglass Specialties 38624 Mount Kisco Sterling Heights MI 48310 telephone 313 9782512 full-scale Rcdigo uses modified NACA 63-2 18 airfoil root modified NACA 63-4 12 tip root set 30 positive incidence wing has built-in 30 washout twist drawings possession judged airfoils too unusual appearance RC airplane Instead drew up nonscale fully symmetrical 16%-thick wing airfoil section similar others have achieved good aerobatic overall flying characteristics no service cutting foam cores available area recommend Aerosmith Model Aviation RD #1 Box 290 Athens NY 12015 telephone 518 945-1091 large clear plastic canopy presents single difficult challenge scratchbuilder undertaking project Ul PLEWBOB IREALL I2i REINFORCE FIREWALL i1i1I 11111 _____________ 217~ liii Locate PAILS TO SUIT RETRACTS USEDHARDWOOD TRIANGLE SroCK FIBERGLASS COWL AVAIL ABLE FROM TAO FIBERGLASS SPECIALTIES 3*820 MOUNT KISCO STERLING HEIGHTS MI BASID L12 SPINNER / 1'i JI 7 j4A 7i-~--ZENOAK GB USED IN PROTOTTPE ANT 00 OR ROtC ENGINE SHRUG 0 BE SGITADLB PCASIIC TANG NICK ZIROLI 20 EDGAR 0 SMITH TOWN FUEL TANK -BArn 1 -I PLT BALSA BLOCK VBA 3/4 HA NO WOOD RETRACT MOUNTING STRUT LOCATION WILL ART OCPINOING ON RETRACTS I OSEG LOCATE FARTHER FORWARD IF POSSIBLE FIXED OR RE big over 24 long 11 wide about 6 deep isnt easy find canopy vacuum-forming capability scope lucky Well-known modelers Nick Ziroli Jr Sr helped us out vacuum-forming equipment Lance carved plug pine boards glued together quite task Zirolis used pull few canopies us worry Zirolis now offering canopy commercially Details available Nick Ziroli Models 29 Edgar Drive Smithtown NY 11787 some doubts about using retractable landing gear concerned about added weight gear mechanisms need supporting structure worried about reliability retracts Also cost some money Lance builder decision thought clean aircraft layout would look good fly well wheels pulled up retracts way go found several types commercially available retracts thought suitable Dave Platt Impact Engineering designs both looked good finally used Impact gear along shock-absorbing struts same company scale appearance gear appear well designed 34 Model Aviation wing has turned upside down show retract mounting wheel well openings wing mounting thin aluminum gear doors secured silicone rubber Two ny lon bolts heavy plywood tab leading edge provide wing mounting third recess leading edge foreground nose gear retract forward-swept wing leading edge created slightly modifying standard foam-core cut ting techniques main panel cut conventionally notched accept separately cut forward extension piece foam core parts giued together sheeted usuai Full-Size Plans AvailableSee Page 196 S CLOTH AND EPOXY Ii _______ 7/H--I.4 111iiI1 IIrJAr BALSA SKEET ON FOAM LOBED TAIL SURFACES IB SODA RE IB BALSA,r BALSA DYERBLOCKS COCKPIT FLOORFDA/A CORE FUSELABE TOP BLOCKS AC BALSA ~-- // II -___- /tf CCII VER MD BALSASTOCKlAB BALSA DOUBLER I/IC PLY OSUOL IRSlAB PLr FINSBOTTOM IACDOTO HERE NYLON BOLTS USE rWO ELEVATOR SERVOS UB BALSAAB PLYWOODWITH SEPARATE LINKAGE VALMET L9OTP WINO SADDLE PIECESWINO MOUNT/NO PLATETO EACH SURFACE RED/GO TN/NUSE 0000 MUFFLER ALUMINUM0ON LABOC NOISY ENGINES DEAR DOORS OF THE FINNISO TRAINER AIRCRAFT DES/UNtO AND DRAWN BY VAL DICK SARPOLUS 0I2545B2 BB ID II IV SKEET OF 2 rugged enough job drawback forward location actuating cylinder nose gear unit Lance machined away portion some cylinder fins Zenoah G-62 provide clearance retract mechanism dont think will affect engine cant say retracts have completely trouble-free far thats probably because first production sets few bugs ran being may already have worked out Lance right plane looks flies great wheels tucked up however want save money simplify project go fixed gear prototype came out 221/2 lb anotwithstanding Redigo acrobaticis straightforward uses fewest parts wing loading almost 40 ox per sq ftand fast sleek look Stable yetpossible havent scratch-built Thats bit high models size canagile model flies like Pattern aircraftplans before assured fly higher wing loading still handlewith 0-62relatively easy project comfortably first flight awesome Lance covered design MonoKotegood pilot Redigos performanceWing foam core wing requires replicating color scheme theimpressed everyone Im convincedpreliminary step section wing root full-scale test aircraft Lance plans give athat Quadra 50 less powerfulis cut Out replaced separately cut future Redigo striking appearanceengine would deliver reasonable scaleforward extension piece provide very bright air show-type finish thitperformance 0-62 turns plane adistinctive swept-forward leading edge decidedly nonscaletigerangle new configuration similar Weve found Zenoah G-62 athe P-Si Mustang wing planform great engine Brand new turned 20 x io onstruction youve created leading edge Zinger 8400 rpm ground weforward sweep complete structure expected good flight performance WeTypical sheeted foam-and-balsa/plywoodyou would foam core wing werent disappointed Its large sizebuilt-tip construction used structure re sheeting wing insert several April 1992 35 RC Valmet Redigo Type Sport Scale Wingspan 94 Recommended engine size type Zenoah G-62 40-50cc engine would adequate Number RC channels recommended Five six using optional flaps Expected flying weight 221/2 lb Type construction Built-up foam-and-balsa/plywood Type coveringltlnish recommended MonoKote plywood ribs hardwood stub spars foam cores rceeivc support retract mechanisms Adjust location ribs mounting rails and/or spars stilt retracts being used Cut /8-in plywood rib inserts oversize mark trim hush fit foam cores Using hot wire cutting tools very sharp modeling knifc cut grooves loam spars retract mounting rails dihedral joiner Finally cut holes pneumatic lines course youve already built foam core wings model retracts may have worked out own method supporting retract mechanisms use fixed landing gear suggest wire gear legs least 1/4 installed typical grooved hardwood gear blocks secured plywood ribs Make stire grooved block extends center wing location 1/4-in plywood wing joiner should used Add shock-absorbing struts desired plywood ribs gear mounting provisions have glued foam coics youre ready sheet wing cores top bottom use /32 mediumweight balsa core sheeting edge gluing necessary achieve retltlired width As longtime user Dave I3rowns Southern Sorghum contact cement adhering sheeting foam cores know ean expect perfect results time Other builders successfully use epoxy glue thinly applied 3M 77 spray contact cement Sig Manufacturing products Trim off leading edges block sand square Add oversized balsa 0/HEONAL S k2 MVER EACH TIP I/R PLYWC CENTER RI BALSA BLOCK WING TIPS /__________________________ SCALE AILERON eCOiNlTERBALANCESHEET COMPLETE ICONFIGURATIONTHEN CUT AILEROI ANO FINISM ECUE PO 1f4 PLT WING MOUNT BULKHEAO /If4PLT RETRACT MOUNTING SUPPORT / / / I / // PLT FIREWALL leadine edge strip plane sand shape wing tips made shaping balsa blocks Since large light blocks difficult obtain glued smaller blocks together needed size Cut aileron sections sheeted wing panels trim down allow balsa edging sand edges shape Bevel aileron leading edges preparation hinging Install hinges either along centerline prototype along top edge Use large sturdy free-moving hinges dont skimp luantity choose include flaps cut appropriate sections wing finish off did ailerons 1-linge flaps along lower edge Cut recesses lower wing surface aileron servo mounting Glue mounts wing use piece /4-in steel rod aileron servo extension cables heating its end pushing through foam core fiom root aileron servo location Removable thin plywood hatches 36 Model Aviation Doing hard way dont have Starting 11 layers pine glued together author builder Lance Schneider carved pine block shape use Nick Ziroli Jr Sr plug vacuum forming Redigos large plastic canopy x I/B Builder Lance Schneider services large model Byrons Craft Cuddler Full-Size Plans AvailableSee Page 196 SHEET WING WITH 5J5 BALSA BGALSA LEADING EDGE I4 PLY WING MOUNTING KEY WRAP WING CENTER JOINT WITH HEAVY FIBERGLASS CLOTH AND EPOXY_____ _______FOAM CORE SECTIONFOR RETRACT WHEEL CLEARANCE F I/B PLYWOOD WING JOINER I/41 I/5 HARDWOOD TOP AND BOTTOM RECESS SPARS INTO FOAM CORE ORE TEMPLA TES S/BXJJE HARDWOOD RETRACT MOUNTING/ lit RAILS- TO SUIT/ RETRACTS USED 1 INSTALL AILERON SERVOS IN WING / WITH ACCESS HATCHES ON BOTTOM SURFACE - I/BPLY RIBS SET INTO FOAM CORE SCALE FLAP HINGE LINE IF DESIRED CORE TEMPLATES IBPL T WING RIBS CUT OVERSIZE TRIM FLUSH WITH FOAM CORE CUT OUT AS NEEDED FOR RETRACTS 7 7 7 HEADS WRAP CENTER SECTION WITH F GLASS CLOTH AND EPOXY FOAM REAR TOP FUSELAGE TEMPLATES S/52 BALSA SHEETING I/4 PLYWOOD WING JOINER __________RtDIG 0 FOAM FORWAHO TOP FUSELAGE TEMPLATES 5 '\ III 1 BALSAII LEADING EDGE I\ I / II Si / S / SHEET S OF can bC installed over scrvo areas positioning wing used /4jfl plywood wing mounting key leading edgc rather customary dowcls key reinforced plywood ribs near foamcore root like method because contact area thc fusciage bulkhead retains wing mount can trimmed shimmed necessaly achieve correct wing-to-fuselage fit sure plywood key extends barterinch forward leading edge since rests recess fuselage wing mount bulkhead Butt glue wing halves using plywood joiner plenty epoxy Wrap center joint heavy fiberglass cloth epoxy Fuselage Select lirm-to-hard balsa Is-in sides edge gluing splicing wood necessary sixe youll need Install /16 plywood doublers balsa wing saddle pieces stab saddle doublers balsa corner strips both fuselage sides Add bulkheads using plan top fuselage view guide assembly Youll need bevel edge /2-in plywood firewall lit properly curved sides Add /4-in plywood wing bolt plate pull tail end together install icar bulkheads keeping fuselage straight sides taper rear straight line wing trailing edge position tail ensuring straightcut foam top block will fit correctly balsa cockpit Iloor strengthens stiffens fuselage assembly Reinforce firewall installation heavy fiberglass cloth epoxy installing over hardwood trianll e stock behind firewall also install several small screws through sides firewall extra security against vibration large engine Sheet trim foam core top pieces /3 balsa glue place Before sheeting bottom cut holes rear bulkheads elevator rudder pushrods Its best postpone adding bottom planking until after tail surfaces have installed wing has fitted fuselage Fit wing fuselage adjusting fit wing mounting key bulkhead necessary Drill through wing trailing edge mounting bolts Tap plywood fuselage wing motint accept /42 nylon bolts youre usin enine other Zenoah G-62 may necessary install plywood spacers behind enine mount order properly locate propeller Ii xed andi uig gear attach heavy-duty nose strut plywood firewall retracts cut firewall necessary install hardwood mOuntino Till retract mechanism between firewall adjacent bulkhead Depending engine retracts used may have cut away some cooling fins engine cylinder head provide clearance retract unit nose wheel retracted completely enclosed fuselage portion protrudes bottom aircraft continued page 146 April 1992 37 CROSS SECTION cZZFIIzz FOAM STAB CORE TEMPLATES I/B BALSA BULKHEADS Wth Wells Cargo Behind. Never Look Back WELLS CARGO Rolling Hanger like makes sense serious RC model pilot has dependable weather-proof transport has convenient safe storage Bird wings spare props radio gear organized ready go Buzzin anytime weatherman says OK Cloud Dancer unit 12 foot ToteWagon model Weve got Wells Cargo just right 6 feet up 3 YR LIMITED WARRANTY PROGRAM FACTORY SERVICE POINTS A TX UTAH US WIDE DEALER SERVICE NETWORK BALL HITCH TRAILERS 6-32 GOOSE NECKS 0 1-800-348-7553 FOR LITERATURE PRICES DEALER & PLANT LOCATIONS SINCE S CARGO PO BOX flS-982ELKHART IN 46515-0728 Valmet Redigo/Sarpolus Continued page 37 fiberglass cowl trimmed necessary clear engine cylinder exhaust landing gear Tap fuselage sides threaded nylon bolts used mounting cowl wing bolted fuselage build up lower section glue wing bottom shape blend rear fuselage section Similarly shape balsa block contour bottom forward fuselage glue bottom wing SAY YOU SAW IT IN MODEL AVIATION Trim large plastic canopy fit secure small screws lower edges fuselage side Add simulated interior cockpit details suit Since Redigo set up two-person side-by-side training room two rear passenger seats up four figures could used extra realism Tail surfaces Sheet tail surface cores /32 balsa Join horizontal stabilizer panels reinforcing joint fiberglass cloth epoxy Cut surface apart along hinge lines allowing space added balsa edges Finish off edges install hinges glue stabilizer fuselage Glue vertical fin stabilizerand top fuselage piece rudder linkage can handled torque tube arrangement extending through stab since hookup pushrod will internal sure make secure Shape balsa blocks installed aft fuselage top side behind fin blocks place make three small fixed vertical fins attach fuselage bottom Control surfaces Recess control surfaces accept t/4-in plywood pieces mounting nylon horns ailerons elevators Epoxy plywood mounts control surfaces attach horns small screws recommend using larger 4-40 threaded rods devises linkages Use fiberglass tube pushrods elevator linkages Make fuselage servo mounting 1/4-in plywood elevators actuated separate servos its own pushrod allows pushrods perfectly straight Since pushrods cross over within fuselage elevator servos must mounted about I8 higher other prevent pushrods rubbing together Use aileron extension cables make Y-harness two aileron servos mounted wing Another Y-harness required two elevator servos used 1 200-mAh battery pack wrapped foam rubber positioned behind wing trailing edge its weight required balance Landing gear wheels engine fuel system appearance sake cut main landing gear doors thin aluminum affixed retract struts silicone adhesive may add landing gear doors nose gear well Robarts scale wheels look good model adequately support Redigos weight however wheels require Robarts interna[ loam tire ~doublers Order direct manufacturer used 16-oz fuel tank Theres room second 1 6-oz tank smoke system desired ignition cutoff switch mounted forward firewall switch SAVE YOUR FIELD SNUF-LER muffler low cost easy Install lightweight sound reducing muffler no performance penalty answer AMA muffler rule suggestions saving flying fields Meets AMA muffler rule suggestions 3 10 decibels quieter stock muffler No power lose posaibie 300500 RPM increase Improves engine idle s better fuel economy Easily attached 25-108 atock mufflers Heat corrosion resistant Black E coat finish No special adapters required Weighs 35 oza Fits ASP BRAT ENYA FOX HP IRVINE K & B 05 MAX ROYAL YS SUPER TIGRE mufflers available hobby shop ORDER DIRECT immediate shipment Check MO Visa MC cooSEND 25i STAMP accepted Add 5250 UPS $200 COD t% sales tasFOR ADDITIONAL INFO Calif residentAND ITEC CATALOG 146 Model Aviation GO FLYING WITH COMPLETE ROLLING HANGER LIKE THIS NEW FAI TAN RUBBER 114 3/16 1/8 thick 1 lb box $1475 inciudes4oL Slick Lubel $1375 mo lube k costs *1751 10 lb box- $11000 ius Deliveredl Postpaid US vie UPS Cal res add 6% sales tax Made USA Slow cure consiatant quaifty Ask PAl-TAN 89190 catalog hate 100FF kitel CROCKET HOOKS~ NOW MADE BY SEND*150FA Model Supply FOR CATALOGnoneocEcsosboCARSON 0090745 nEc 213 830-8935 handle protrudes slightly through fiberglass cowl propeller Zinger 20 x 10 used Zinger 31/2in spun aluminum spinner Cut hole through cowl easy access carburetor Install air pressure filler valve retracts fuselage bottom nose section used B&B muffler Zenoah G-62 cutting cowl clearance around muffler Unfortunately noise level still pretty high dont know really effective commercially available mufflers fit G-62 add-on units such JTec Snuffler could hung externally below fuselage Wouldnt look good unless flying field location can tolerate noise might have quiet down Zenoah somehow Covering finishing duplicated color scheme original Redigo test aircraftgray overall contrasting areas black red yellow blue look scale yet somewhat understated As noted next Redigo will probably receive bright air-show aerobatic-type finish greater visual excitement large airplane large engine exact Scale comes pretty close Using retracts adds complexity amount scale detailing incorporated up builder Basically however can count airframe thats quick easy build fast aerobatic flight Redigo well suited sport flier wants large model hot performance Award Continued page 51 Frank wife Carmen enjoy leisurely retired life Northridge California have won additional fame annual reports detailing travels around country over world reports have become collector items friends privileged receive Looking back highlights very full life Frank recalls special pride early 1930s full-scale glider pilot pilots license signed Orville Wright Approximately 60 years later noted special distinction the NAA ceremony underscores pertinence NAA award 0 Rnaliy An Engine Mount tern Wont Shake Rattle Roll fly model planes dont have tell theres whole lotta shakin goin now theres something cando about Sullivan Flex Mount System Its engine mounting sys tem has specially designed rubber isolators absorb enine vibration reduce noise andi limit wear tear mode thats Flex-Mount comes aluminum adaptor plate makes easy mount 40 60 90 two-cycle engines firewall strap mount beam mounting four-cyde engines So dont jitterbug Thik dealer Sullivan Flex-Mount engine mount j ing system thought rock roll 7 PRODUCTS would never die Box51668alomorMD21224 Getting Better Ideas OtT Ground RC Aerobatics/Van Putte Continued page 71 Well tough dont favor increasing two-cycle limit above 61 because airplane size would go up stay competitive have enough trouble getting LA-l Ford Probe already personal favorite way promote twocycle vs four-cycle equity restrict fourcycle engine displacement 80 90 two-cycle technology seems about topped out cant keep engines together very long now replacing something other hand four-cycle engine technology still upsweep current 120 four-cycle restriction disparity between two-cycle four-cycle engines going get worse severe restriction four-cycle engine displacement reasonable Eric closed almost impossible legislate either morality economy competitive event However good judging think likely pilot flies better sequence will win contest cases agree anyone would like see complete copy Erics letter Id glad provide youll send SASE Prodigy would like send message ID CMFBO2B l 1992 147
Edition: Model Aviation - 1992/04
Page Numbers: 30, 31, 32, 33, 34, 35, 36, 37, 146, 147
NO OCR TEXT NO OCR TEXT Holding closely possible scale outlines drew up plans 94-in wingspan provided 1300 sq wing area figured would suit Quadra 50 Zenoah 0-62 engine retractable landing gear intentional deviation scale shorten nose length Otherwise model would probably have come out nose-heavy keep project relatively simple left off turbine exhaust stacks air scoop beneath cowl can add details choose Likewise decided flaps unnecessary because anticipated wing loading interested sport aircraft handles well aircraft thats precisely Scale three versions Valmet trainer L-70 L-8OTP L-9OTP would make good Scale projects intend draw up L-70 plans myself near future its barn door wing fixed landing gear shorter nosed piston engine L-70 would easier model build build Send stamped self-addressed envelope two stamps copies three three-view Left Bottoms-up view tail surfaces showing tail skid stabilizer elevators separate pushrods Right Close-up tail feathers model sitting its field stand Note sweptback fin rudder stabilizer elevators counterbalanced elevator 32 Model Aviation Having helped builder Lance Schneider author mold large clear plastic canopy Nick Ziroll Jr Sr now offer Item commercially fiberglass cowl available T&D Fiberglass Specialties Retractable landing gear shock-absorbing struts Impact Engineering add scale appearance Zenoah G-62 engine pushes craft Pattern league 20 x 10 prop spun aluminum spinner both Zinger two-seat cockpit has room two pas senger seats rear Designing model View radio installation Zenoah G-62 engine B&B muffler ImpacT engineering retractable landing gear Note retract gear air pressure filler fitting fuselage bottom next engine elevators have separate servo/pushrod installations Y-adapter used receiver Other servos throttle rudder nose gear steering I z BPLSfl 3HEET OVER OTh DICK S4RPOLz----~I ~auuruu EUWEW PLflSTIC CRNOP9 PILPbLEI FROM NICK ZROII MODE-i-S~7 S4LE -7 7JQBRLSR1141S OR -s I- SUPtO N RECIcL IrSPKING i BRLS SIDE5&O1TOM Ac FIREWOLL 4O op 5O ENGINE- OVER FORM CORE 4z HPRD4o PLY RISS FIBERGL5 COWL Fi T&D FI5ERGLPEE 0 0 drawings few photographs address 32 Alameda Ct Shrewsbury NJ 07702 Redigo uses familiar construction techniques well proven several earlier projects experience foam-cored wing tail surfaces quickest easiest way go scratch-built models size foam cores save great deal design time weight comes reasonable figure doubt built-up rib spar sheet structure sufficient strength could achieved comparable weight fuselage configuration its straight tapered tail section also lends itself use foam-cored upper portions wasnt difficult model design As noted except nose length exact scale outlines followed closely possible lighter weight choice among available large glow engines could probably keep nose length scale proportions scratch-built cowl shape should fairly easy duplicate fiberglass cowl however available T&D Fiberglass Specialties 38624 Mount Kisco Sterling Heights MI 48310 telephone 313 9782512 full-scale Rcdigo uses modified NACA 63-2 18 airfoil root modified NACA 63-4 12 tip root set 30 positive incidence wing has built-in 30 washout twist drawings possession judged airfoils too unusual appearance RC airplane Instead drew up nonscale fully symmetrical 16%-thick wing airfoil section similar others have achieved good aerobatic overall flying characteristics no service cutting foam cores available area recommend Aerosmith Model Aviation RD #1 Box 290 Athens NY 12015 telephone 518 945-1091 large clear plastic canopy presents single difficult challenge scratchbuilder undertaking project Ul PLEWBOB IREALL I2i REINFORCE FIREWALL i1i1I 11111 _____________ 217~ liii Locate PAILS TO SUIT RETRACTS USEDHARDWOOD TRIANGLE SroCK FIBERGLASS COWL AVAIL ABLE FROM TAO FIBERGLASS SPECIALTIES 3*820 MOUNT KISCO STERLING HEIGHTS MI BASID L12 SPINNER / 1'i JI 7 j4A 7i-~--ZENOAK GB USED IN PROTOTTPE ANT 00 OR ROtC ENGINE SHRUG 0 BE SGITADLB PCASIIC TANG NICK ZIROLI 20 EDGAR 0 SMITH TOWN FUEL TANK -BArn 1 -I PLT BALSA BLOCK VBA 3/4 HA NO WOOD RETRACT MOUNTING STRUT LOCATION WILL ART OCPINOING ON RETRACTS I OSEG LOCATE FARTHER FORWARD IF POSSIBLE FIXED OR RE big over 24 long 11 wide about 6 deep isnt easy find canopy vacuum-forming capability scope lucky Well-known modelers Nick Ziroli Jr Sr helped us out vacuum-forming equipment Lance carved plug pine boards glued together quite task Zirolis used pull few canopies us worry Zirolis now offering canopy commercially Details available Nick Ziroli Models 29 Edgar Drive Smithtown NY 11787 some doubts about using retractable landing gear concerned about added weight gear mechanisms need supporting structure worried about reliability retracts Also cost some money Lance builder decision thought clean aircraft layout would look good fly well wheels pulled up retracts way go found several types commercially available retracts thought suitable Dave Platt Impact Engineering designs both looked good finally used Impact gear along shock-absorbing struts same company scale appearance gear appear well designed 34 Model Aviation wing has turned upside down show retract mounting wheel well openings wing mounting thin aluminum gear doors secured silicone rubber Two ny lon bolts heavy plywood tab leading edge provide wing mounting third recess leading edge foreground nose gear retract forward-swept wing leading edge created slightly modifying standard foam-core cut ting techniques main panel cut conventionally notched accept separately cut forward extension piece foam core parts giued together sheeted usuai Full-Size Plans AvailableSee Page 196 S CLOTH AND EPOXY Ii _______ 7/H--I.4 111iiI1 IIrJAr BALSA SKEET ON FOAM LOBED TAIL SURFACES IB SODA RE IB BALSA,r BALSA DYERBLOCKS COCKPIT FLOORFDA/A CORE FUSELABE TOP BLOCKS AC BALSA ~-- // II -___- /tf CCII VER MD BALSASTOCKlAB BALSA DOUBLER I/IC PLY OSUOL IRSlAB PLr FINSBOTTOM IACDOTO HERE NYLON BOLTS USE rWO ELEVATOR SERVOS UB BALSAAB PLYWOODWITH SEPARATE LINKAGE VALMET L9OTP WINO SADDLE PIECESWINO MOUNT/NO PLATETO EACH SURFACE RED/GO TN/NUSE 0000 MUFFLER ALUMINUM0ON LABOC NOISY ENGINES DEAR DOORS OF THE FINNISO TRAINER AIRCRAFT DES/UNtO AND DRAWN BY VAL DICK SARPOLUS 0I2545B2 BB ID II IV SKEET OF 2 rugged enough job drawback forward location actuating cylinder nose gear unit Lance machined away portion some cylinder fins Zenoah G-62 provide clearance retract mechanism dont think will affect engine cant say retracts have completely trouble-free far thats probably because first production sets few bugs ran being may already have worked out Lance right plane looks flies great wheels tucked up however want save money simplify project go fixed gear prototype came out 221/2 lb anotwithstanding Redigo acrobaticis straightforward uses fewest parts wing loading almost 40 ox per sq ftand fast sleek look Stable yetpossible havent scratch-built Thats bit high models size canagile model flies like Pattern aircraftplans before assured fly higher wing loading still handlewith 0-62relatively easy project comfortably first flight awesome Lance covered design MonoKotegood pilot Redigos performanceWing foam core wing requires replicating color scheme theimpressed everyone Im convincedpreliminary step section wing root full-scale test aircraft Lance plans give athat Quadra 50 less powerfulis cut Out replaced separately cut future Redigo striking appearanceengine would deliver reasonable scaleforward extension piece provide very bright air show-type finish thitperformance 0-62 turns plane adistinctive swept-forward leading edge decidedly nonscaletigerangle new configuration similar Weve found Zenoah G-62 athe P-Si Mustang wing planform great engine Brand new turned 20 x io onstruction youve created leading edge Zinger 8400 rpm ground weforward sweep complete structure expected good flight performance WeTypical sheeted foam-and-balsa/plywoodyou would foam core wing werent disappointed Its large sizebuilt-tip construction used structure re sheeting wing insert several April 1992 35 RC Valmet Redigo Type Sport Scale Wingspan 94 Recommended engine size type Zenoah G-62 40-50cc engine would adequate Number RC channels recommended Five six using optional flaps Expected flying weight 221/2 lb Type construction Built-up foam-and-balsa/plywood Type coveringltlnish recommended MonoKote plywood ribs hardwood stub spars foam cores rceeivc support retract mechanisms Adjust location ribs mounting rails and/or spars stilt retracts being used Cut /8-in plywood rib inserts oversize mark trim hush fit foam cores Using hot wire cutting tools very sharp modeling knifc cut grooves loam spars retract mounting rails dihedral joiner Finally cut holes pneumatic lines course youve already built foam core wings model retracts may have worked out own method supporting retract mechanisms use fixed landing gear suggest wire gear legs least 1/4 installed typical grooved hardwood gear blocks secured plywood ribs Make stire grooved block extends center wing location 1/4-in plywood wing joiner should used Add shock-absorbing struts desired plywood ribs gear mounting provisions have glued foam coics youre ready sheet wing cores top bottom use /32 mediumweight balsa core sheeting edge gluing necessary achieve retltlired width As longtime user Dave I3rowns Southern Sorghum contact cement adhering sheeting foam cores know ean expect perfect results time Other builders successfully use epoxy glue thinly applied 3M 77 spray contact cement Sig Manufacturing products Trim off leading edges block sand square Add oversized balsa 0/HEONAL S k2 MVER EACH TIP I/R PLYWC CENTER RI BALSA BLOCK WING TIPS /__________________________ SCALE AILERON eCOiNlTERBALANCESHEET COMPLETE ICONFIGURATIONTHEN CUT AILEROI ANO FINISM ECUE PO 1f4 PLT WING MOUNT BULKHEAO /If4PLT RETRACT MOUNTING SUPPORT / / / I / // PLT FIREWALL leadine edge strip plane sand shape wing tips made shaping balsa blocks Since large light blocks difficult obtain glued smaller blocks together needed size Cut aileron sections sheeted wing panels trim down allow balsa edging sand edges shape Bevel aileron leading edges preparation hinging Install hinges either along centerline prototype along top edge Use large sturdy free-moving hinges dont skimp luantity choose include flaps cut appropriate sections wing finish off did ailerons 1-linge flaps along lower edge Cut recesses lower wing surface aileron servo mounting Glue mounts wing use piece /4-in steel rod aileron servo extension cables heating its end pushing through foam core fiom root aileron servo location Removable thin plywood hatches 36 Model Aviation Doing hard way dont have Starting 11 layers pine glued together author builder Lance Schneider carved pine block shape use Nick Ziroli Jr Sr plug vacuum forming Redigos large plastic canopy x I/B Builder Lance Schneider services large model Byrons Craft Cuddler Full-Size Plans AvailableSee Page 196 SHEET WING WITH 5J5 BALSA BGALSA LEADING EDGE I4 PLY WING MOUNTING KEY WRAP WING CENTER JOINT WITH HEAVY FIBERGLASS CLOTH AND EPOXY_____ _______FOAM CORE SECTIONFOR RETRACT WHEEL CLEARANCE F I/B PLYWOOD WING JOINER I/41 I/5 HARDWOOD TOP AND BOTTOM RECESS SPARS INTO FOAM CORE ORE TEMPLA TES S/BXJJE HARDWOOD RETRACT MOUNTING/ lit RAILS- TO SUIT/ RETRACTS USED 1 INSTALL AILERON SERVOS IN WING / WITH ACCESS HATCHES ON BOTTOM SURFACE - I/BPLY RIBS SET INTO FOAM CORE SCALE FLAP HINGE LINE IF DESIRED CORE TEMPLATES IBPL T WING RIBS CUT OVERSIZE TRIM FLUSH WITH FOAM CORE CUT OUT AS NEEDED FOR RETRACTS 7 7 7 HEADS WRAP CENTER SECTION WITH F GLASS CLOTH AND EPOXY FOAM REAR TOP FUSELAGE TEMPLATES S/52 BALSA SHEETING I/4 PLYWOOD WING JOINER __________RtDIG 0 FOAM FORWAHO TOP FUSELAGE TEMPLATES 5 '\ III 1 BALSAII LEADING EDGE I\ I / II Si / S / SHEET S OF can bC installed over scrvo areas positioning wing used /4jfl plywood wing mounting key leading edgc rather customary dowcls key reinforced plywood ribs near foamcore root like method because contact area thc fusciage bulkhead retains wing mount can trimmed shimmed necessaly achieve correct wing-to-fuselage fit sure plywood key extends barterinch forward leading edge since rests recess fuselage wing mount bulkhead Butt glue wing halves using plywood joiner plenty epoxy Wrap center joint heavy fiberglass cloth epoxy Fuselage Select lirm-to-hard balsa Is-in sides edge gluing splicing wood necessary sixe youll need Install /16 plywood doublers balsa wing saddle pieces stab saddle doublers balsa corner strips both fuselage sides Add bulkheads using plan top fuselage view guide assembly Youll need bevel edge /2-in plywood firewall lit properly curved sides Add /4-in plywood wing bolt plate pull tail end together install icar bulkheads keeping fuselage straight sides taper rear straight line wing trailing edge position tail ensuring straightcut foam top block will fit correctly balsa cockpit Iloor strengthens stiffens fuselage assembly Reinforce firewall installation heavy fiberglass cloth epoxy installing over hardwood trianll e stock behind firewall also install several small screws through sides firewall extra security against vibration large engine Sheet trim foam core top pieces /3 balsa glue place Before sheeting bottom cut holes rear bulkheads elevator rudder pushrods Its best postpone adding bottom planking until after tail surfaces have installed wing has fitted fuselage Fit wing fuselage adjusting fit wing mounting key bulkhead necessary Drill through wing trailing edge mounting bolts Tap plywood fuselage wing motint accept /42 nylon bolts youre usin enine other Zenoah G-62 may necessary install plywood spacers behind enine mount order properly locate propeller Ii xed andi uig gear attach heavy-duty nose strut plywood firewall retracts cut firewall necessary install hardwood mOuntino Till retract mechanism between firewall adjacent bulkhead Depending engine retracts used may have cut away some cooling fins engine cylinder head provide clearance retract unit nose wheel retracted completely enclosed fuselage portion protrudes bottom aircraft continued page 146 April 1992 37 CROSS SECTION cZZFIIzz FOAM STAB CORE TEMPLATES I/B BALSA BULKHEADS Wth Wells Cargo Behind. Never Look Back WELLS CARGO Rolling Hanger like makes sense serious RC model pilot has dependable weather-proof transport has convenient safe storage Bird wings spare props radio gear organized ready go Buzzin anytime weatherman says OK Cloud Dancer unit 12 foot ToteWagon model Weve got Wells Cargo just right 6 feet up 3 YR LIMITED WARRANTY PROGRAM FACTORY SERVICE POINTS A TX UTAH US WIDE DEALER SERVICE NETWORK BALL HITCH TRAILERS 6-32 GOOSE NECKS 0 1-800-348-7553 FOR LITERATURE PRICES DEALER & PLANT LOCATIONS SINCE S CARGO PO BOX flS-982ELKHART IN 46515-0728 Valmet Redigo/Sarpolus Continued page 37 fiberglass cowl trimmed necessary clear engine cylinder exhaust landing gear Tap fuselage sides threaded nylon bolts used mounting cowl wing bolted fuselage build up lower section glue wing bottom shape blend rear fuselage section Similarly shape balsa block contour bottom forward fuselage glue bottom wing SAY YOU SAW IT IN MODEL AVIATION Trim large plastic canopy fit secure small screws lower edges fuselage side Add simulated interior cockpit details suit Since Redigo set up two-person side-by-side training room two rear passenger seats up four figures could used extra realism Tail surfaces Sheet tail surface cores /32 balsa Join horizontal stabilizer panels reinforcing joint fiberglass cloth epoxy Cut surface apart along hinge lines allowing space added balsa edges Finish off edges install hinges glue stabilizer fuselage Glue vertical fin stabilizerand top fuselage piece rudder linkage can handled torque tube arrangement extending through stab since hookup pushrod will internal sure make secure Shape balsa blocks installed aft fuselage top side behind fin blocks place make three small fixed vertical fins attach fuselage bottom Control surfaces Recess control surfaces accept t/4-in plywood pieces mounting nylon horns ailerons elevators Epoxy plywood mounts control surfaces attach horns small screws recommend using larger 4-40 threaded rods devises linkages Use fiberglass tube pushrods elevator linkages Make fuselage servo mounting 1/4-in plywood elevators actuated separate servos its own pushrod allows pushrods perfectly straight Since pushrods cross over within fuselage elevator servos must mounted about I8 higher other prevent pushrods rubbing together Use aileron extension cables make Y-harness two aileron servos mounted wing Another Y-harness required two elevator servos used 1 200-mAh battery pack wrapped foam rubber positioned behind wing trailing edge its weight required balance Landing gear wheels engine fuel system appearance sake cut main landing gear doors thin aluminum affixed retract struts silicone adhesive may add landing gear doors nose gear well Robarts scale wheels look good model adequately support Redigos weight however wheels require Robarts interna[ loam tire ~doublers Order direct manufacturer used 16-oz fuel tank Theres room second 1 6-oz tank smoke system desired ignition cutoff switch mounted forward firewall switch SAVE YOUR FIELD SNUF-LER muffler low cost easy Install lightweight sound reducing muffler no performance penalty answer AMA muffler rule suggestions saving flying fields Meets AMA muffler rule suggestions 3 10 decibels quieter stock muffler No power lose posaibie 300500 RPM increase Improves engine idle s better fuel economy Easily attached 25-108 atock mufflers Heat corrosion resistant Black E coat finish No special adapters required Weighs 35 oza Fits ASP BRAT ENYA FOX HP IRVINE K & B 05 MAX ROYAL YS SUPER TIGRE mufflers available hobby shop ORDER DIRECT immediate shipment Check MO Visa MC cooSEND 25i STAMP accepted Add 5250 UPS $200 COD t% sales tasFOR ADDITIONAL INFO Calif residentAND ITEC CATALOG 146 Model Aviation GO FLYING WITH COMPLETE ROLLING HANGER LIKE THIS NEW FAI TAN RUBBER 114 3/16 1/8 thick 1 lb box $1475 inciudes4oL Slick Lubel $1375 mo lube k costs *1751 10 lb box- $11000 ius Deliveredl Postpaid US vie UPS Cal res add 6% sales tax Made USA Slow cure consiatant quaifty Ask PAl-TAN 89190 catalog hate 100FF kitel CROCKET HOOKS~ NOW MADE BY SEND*150FA Model Supply FOR CATALOGnoneocEcsosboCARSON 0090745 nEc 213 830-8935 handle protrudes slightly through fiberglass cowl propeller Zinger 20 x 10 used Zinger 31/2in spun aluminum spinner Cut hole through cowl easy access carburetor Install air pressure filler valve retracts fuselage bottom nose section used B&B muffler Zenoah G-62 cutting cowl clearance around muffler Unfortunately noise level still pretty high dont know really effective commercially available mufflers fit G-62 add-on units such JTec Snuffler could hung externally below fuselage Wouldnt look good unless flying field location can tolerate noise might have quiet down Zenoah somehow Covering finishing duplicated color scheme original Redigo test aircraftgray overall contrasting areas black red yellow blue look scale yet somewhat understated As noted next Redigo will probably receive bright air-show aerobatic-type finish greater visual excitement large airplane large engine exact Scale comes pretty close Using retracts adds complexity amount scale detailing incorporated up builder Basically however can count airframe thats quick easy build fast aerobatic flight Redigo well suited sport flier wants large model hot performance Award Continued page 51 Frank wife Carmen enjoy leisurely retired life Northridge California have won additional fame annual reports detailing travels around country over world reports have become collector items friends privileged receive Looking back highlights very full life Frank recalls special pride early 1930s full-scale glider pilot pilots license signed Orville Wright Approximately 60 years later noted special distinction the NAA ceremony underscores pertinence NAA award 0 Rnaliy An Engine Mount tern Wont Shake Rattle Roll fly model planes dont have tell theres whole lotta shakin goin now theres something cando about Sullivan Flex Mount System Its engine mounting sys tem has specially designed rubber isolators absorb enine vibration reduce noise andi limit wear tear mode thats Flex-Mount comes aluminum adaptor plate makes easy mount 40 60 90 two-cycle engines firewall strap mount beam mounting four-cyde engines So dont jitterbug Thik dealer Sullivan Flex-Mount engine mount j ing system thought rock roll 7 PRODUCTS would never die Box51668alomorMD21224 Getting Better Ideas OtT Ground RC Aerobatics/Van Putte Continued page 71 Well tough dont favor increasing two-cycle limit above 61 because airplane size would go up stay competitive have enough trouble getting LA-l Ford Probe already personal favorite way promote twocycle vs four-cycle equity restrict fourcycle engine displacement 80 90 two-cycle technology seems about topped out cant keep engines together very long now replacing something other hand four-cycle engine technology still upsweep current 120 four-cycle restriction disparity between two-cycle four-cycle engines going get worse severe restriction four-cycle engine displacement reasonable Eric closed almost impossible legislate either morality economy competitive event However good judging think likely pilot flies better sequence will win contest cases agree anyone would like see complete copy Erics letter Id glad provide youll send SASE Prodigy would like send message ID CMFBO2B l 1992 147