John Preston 7afety Comes First Northampton St NW Washington DC 20015 Sharing airspace full-scale planes Use caution Helicopter preflight checklist Learn wind affects RC planes flight path safety FATAL ATTRACTION Back September 1980 issue Model Aviation columnist men tioned incident occurred West Coast involved collision between RC Sailplane hang glider Fortunately hang glider pilot suffered no serious injuries comment incident Simultaneous op eration RC Sailplanes hang gliders es sentially same site appears hazardous pursuit editorial Switch October 1987 issue British model magazine Radio Control Models & Electronics RCM&E re cently came attention devoted al entirely discussion another collision between Slope Soarer hang glider case hang glider pilot suffered fatal injur ies Devils Dyke Sussex England may long way Pacific Coast US However no matter fly share airspace other aircraft whether full-scale models ever present risk collision cir cumstances surrounding two incidents took place some seven years apart suf ficiently similar believe short dis cussion Devils Dyke incident described RCM&E necessary caution readers may fly RC Sailplanes slope shared hang gliders Apparently previous problems concerning cooperation between model hang glider pilots Devils Dyke However worked out some type agreement such hang gliders would confine activi ties area left public house pub RCers used area right day accident May 10 1987 model flier launched Salto Sailplane late afternoon flying about 10 15 min utes observed some hang gliders drifted airspace normally confined model-flying activities Recognizing poten tially dangerous situation developing modeler elected land Sailplane promptly However during downwind leg ap proach hang glider suddenly appeared field vision despite attempted evasive actlon collision occurred starboard wing hang glider promptly failed followed shortly similar fail ure port wing estimated altitude about 80 ft hang glider pilot insuffi cient time deploy parachute wearing sustained fatal injuries upon impact ground midair collision point close wing root Sailplane struck severed 3mm-diameter flying wire starboard wing hang glider later found fly ing wire hang gliders wing cut balsa leading edge models wing contacted aileron control brassand-steel wing joiner model models weight approximately four pounds together estimated closing speed 45-60 mph generated force hang gliders wing fly ing wire unable withstand inquest death hang glider pilot verdict death misadventure other words deceased assumed element risk undertaking no charges filed against pilot model Sailplane As anyone has involved modelto-model midair collision will recall concen tration flying own model such second model appears field vi sion generally too late take action avoid collision recommendation may fly slope potential shared airspace have observer present times sole job alert model pilots encroachment full-scale aircraft addition Slope Soaring club activity slope shared hang gliding club costs work out some form amicable agreement between two clubs such minimize eliminate pos sibility midair collision between aircraft two activities Helicopter safety October 1987 issue Model Aviation Safety column carried arti cle sent reader stated Because high degree complexity greater num ber moving parts probable Hel icopters prone mechanical failure fixed-wing models recent letter Lt Col Paul Tradelius took issue statement Pauls letter ex pressed following believe have done injustice Helicopters national maga zine because familiar least part Pauls accusation true certainly am familiar model Helicopters Since have neither built nor flown have rely others expert oper ation information safe practices Pauls letter went point out unlike fixed-wing models mechanical parts Helicopters such control linkages etc exposed can therefore checked easily Continued page 16 C -ii WELL IIT OFF UESS YOU AE VERY SNSIT1VE TO GLUE SMELLS odel Aviation K column provided address Items concern regarding safety aspects model aviation activities Content column however opinion author does necessarily represent official position Academy Model Aeronautics AVAILABLE IN 4-COLORS. Red Yellow White Black Helicopter Tail Rotor Blade Covering 7/8 x 9 Helicopter Tail Rotor Blade Covering 7/8 x 9 Helicopter Tail Rotor Blade Covering 7/8 x 9 Helicopter Tail Rotor Blade Covering 7/8 x 9 Helicopter Tail Rotor Blade Covering 1-7/16x 12 Helicopter Tail Rotor Blade Covering 1-7/16 x 1 2 Helicopter Tail Rotor Blade Covering 1-7/16x 12 Helicopter Tail Rotor Blade Covering 1-7/16x 12 Helicopter Main Rotor Blade Covering 2 x 48 Heiicopter Main Rotor Blade Coverina 2 x 48 DELUXE Nit $28500 plus shipping $1100 Everything full kit wing spars installed wiugn stab turttu deck butch & fin pie-shinned 1116 balsa MAKES BUILOtNG GUICKI Span85 Length66 Wing area 1213 sq Weight . 165 lbs Power035-040 G38-G62 FM JOt $21500 plus sllIppin $1100 Eveuytldeg scratch kit plus i weed pails complete mdd A11 wood & foam construction Flberglas cowl & pants 2-plece plug-in wings Foam core airfoiled tail surfaces No tail brace wires required FOR MORE INFO OR TO PLACE ORDER CONTACT SPIRIT LAKE HOBBIES Ph 712 336-5586 1621 Hill Ave Spirit Lake IA 5136 HEAT SHRINKABLE 4 MILTHICK FILM EASY TO FOLLOW INSTRUCTIONS 478 Helicopter Main Rotor Blade Covering 2 x 48 479 Helicopter Main Rotor Blade Covering 2 x 48 480 Helicopter Main Rotor Blade Covering 2-1/2x 60 481 Helicopter Main Rotor Blade Covering 2-1/2x 60 482 Helicopter Main Rotor Blade Covering 2-1/2x 60 483 Helicopter Main Rotor Blade Covering 2-1/2x 60 484 Helicopter Main Rotor Blade Covering 3-1/4 x 60 485 Helicopter Main Rotor Blade Covering 3-1/4 x 60 486 Helicopter Main Rotor Blade Covering 3-1/4 x 60 487 Helicopter Main Rotor Blade Covering 3-1/4 x 60 So added complexity doesnt necessarily make prone mechanical failure flier performs thorough preflight inspection October 1987 Safety column ended segment Helicopters asking readers preflight checklist type model would willing send copy Well Paul responded request cluded such checklist letter noted some parts may well apply fixed-wing models well PREFLIGHT CHECKLIST FOR MODEL HELICOPTERS 1 Always remember Murphys Law some thing can go wrong will Therefore never sume because particular part has given trouble past will continue work prop erly future means INSPECT EV ERYTHING 2 Never assume something isnt working correctly will good enough flight Whatever working correctly will certainly fix itself things can go bad worse 3 Get preflight routine stick Build habitual pattern checking everything certain sequence certain way write checklist needed Add checklist find other areas suspect 4 Some things check Helicopter follows Before looking little pieces give overall Helicopter general examination gray fuel residue could indication part coming loose vibrating Starting nose canopy re moved check radio installation secure Continued page 18 16 Model Aviation WITH EASY TO APPLY HELICOPTER BLADE COVERING FIVE SIZES AVAILABLE 7/8 x 9 1-7/16 x 12 2x 48 2-1/2x 60and 3-1/4x 60 468Wht 469BIk 470Red 471Yel 472Wht 473Bik 474Red 475Yel 476Wht 477BIki Red Yel Wht Bik Red Yel Wht Bik Red Yel eI TR260 p New French Aerobatic Design 114 Stnnd-nff Rrnl Kit Scratch ff11 $10300 plus shlpplng $1100 CuwI pants canupy lauding gear plans maw cares tot wing lad surfaces turtle deck & batch ikO~x 1063 Lorain Ohio 44055 e 216 282-8354 PijierCubPEANUTSCALE Piper Vagabond Piper Cub Stinuon 125 Outdoor kits $750 Light Indoor kits $795 OUTDOOR PEANUT Super ... $750 SPORT SCALE PC-6 Porter Taylor Craft Stinson Voyager Rubber CO Power Kits each. $850 SPORT MODELS An Embryo Model 18 Span designed winl beginners experts. $850 HARD-TO-FIND ITEMS Early Bird tiusue Antique Aircraft*596 True OlduJupanane Tiauue lOin 3 cobra*096 JupaneauTiusue 12 inOcolore*396 Microlita Silver$396 Microfilm Glue Solvent Conduutuer Paper 3 abruets*460 Plan Service over 17 Scale Spore Scale ft Peanut Scala Rubber Strip 020 thre 085each $196 3132 thru 5132each *250 Winder61 Mark 161 . *1296 complete urea Brown C0 Motore Balsa Wood Outdoor ft Indoor Sheets ft Strips Add 10% Poatage mum Postage *150 COMPLETE CATALOG *150 m WE ARE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY Satisfaction Guaranteed Direct Only BALSA SHEETS 36 48 30I 1/18233 3/32240 1/8 243 3/16245 14 256 1/32337 1/28337 1/163374931 3/32 3445637 1/8 3547145 3/16 3628258 1/4 3735861 5/16385 3/8 3 88 124 71 1/2 3 110 195 3/4 3 195 1/1645876 48 3/32 47094 56 1/8 4 80 106 66 3/16483 12275 1/44/10 134 64 3/84195 225 1/2 4 225 261 MATCHED SHEETS 42 3324100 1/94108 0164120 1/44131 BALSA STICKS 3648 1/16 1/409 1/16 3/810 1/16 1/214 3/32 1/410 3/32 3/612 3/32 1/216 1/8 1/808 1/8 1/41116 1/6 3/81218 3/8 1/21624 3/16 3/161116 3/16 3/517 3/16 1/32230 1/4 1/41624 1/4 3,81926 1/4 1/22/30 1/4 3/43444 1/4 140 5/165/162128 3/8 3/82737 3/8 1/23246 3/8 3/44255 3/8 192 1/2 /23653 1/2 682 1/2 158 5/5 5/848 3/4 3/467 BALSA HOT LINE Call 806 74S-6394 10 am -6pm Ceutral Time LONE STAR MODELS 123 57th St Lubbock TX 79412 IA * CC LSA TRIANGLES3636 1/41/4 2549 3/6 3/8 3049 1/21/2 3549 3/43/4 4856 1 1 5567 76 BALSA PLANKS3688 11 65115 1215039 13200220 14280300 11/2327578 11/2436081 22225100 233251/7 24435138 33495207 34659282 TAPERED SHEETS36 1/42 65TRAILING EDGE36 14385 14132 3/8259 516 / 1439 3/8398 381 246 1/23120 12270 LONE STAR EPOXY 9,L,t--895 5,598 15,598 30 r,r588 INSTANT6LUE / k298 / o Thi238 2, Thick950 2c 1/,550 CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% a serious modeler want performance must try 4-6 lb balsa LIGHT 4-6 LB WOOD 1/323 1/203 1/163 3/323 1/83 3/163 1/4 3 3/8 3 123 34 3 13 1/164 332 84 3164 144 384 1 2 SSWOOD 3/16 3/1 6 3/16 1/4 3/183/8 3/161/2 3/16 3/4 1/4 1/4 1/43/8 1/43/4 3/83/8 3/81/2 3/83/4 1/2 1/2 1/23/4 48 26 30 35 46 60 42 48 80 60 70 80 80 100 BUNDLE DEALS 201/6336685 20-1/164361020 203/32336845 153/32438955 1518336715 101/6436675 15316335900 103/16436810 101/4336630 101/4436800 103/8336890 53/8436628 5-1/2336940 51/2436855 103/32445845 51/8448485 53/16448585 51/4448625 PINE STICKS 36 48 1/8 18 18 14 1/83/8 316 316 316 3/8 3/1612 1/4 14 1/43/8 14 1 2 3838 1317 1623 2027 1724 2332 3040 2637 3042 3447 3752 5/16 SPRUCE STICKS 36 48 38 18 1815 16 141624 1/6 3/82029 3/1631834 14 143149 14 3/83659 3/8 3/84963 / 3/8 125570 1/2 1/26080 12 345988 SPRUCE TRIANGLES 3/83/8 1/2 1/2 34 3/4 36 45 01 77 48 150 300 HARD MAPLE 1/4 3/83/8 3/81/2 3/8 3/4 1/2 3/4 18 40 49 50 58 68 BIRCH DO WELS36 /809 31611 1414 25 32 3PLYBIRCH48 1/5412525 1/3212425 1/1612435 1/612450 SPLSBIRCH48 33212570 1612585 31612585 1412600 GROOVED LII MOUNTS 12 IncheS 3/83/4/18/40 3/83/4/532/40 1/23/4/3/16/45 LITEPL V 1/86 1/8 12 Handling Charge$300 pay UPS Add $200 COD $300 extra PP APO FPO WeaccplVia Maw Cad pe900a/ chocks COD 41/8% 14 ,Txa US xx,ercyoIy Mn,imOrde $1000 — ~ u.j 11 LI k [0] I] ires place properly tied down etc Fuel tank fittings tubing good condition Pushrods servos secure servo arms respective belicranks etc Check worn ball links loose balls Engine muffler mounted securely Clutch starter shaft main drive gear tail rotor drive gear move freely mesh prop erly Swashplate head secure no loose nuts bolts etc Lightly oil head bearings needed Check landing gear tail boom braces secure Check tightness tail rotor drive setscrews use too much force try over tighten setscrews will become rounded Check tail rotor blades blade holders bellcrank etc wear damage Again oil lightly needed Check horizontal vertical fin Turn tail rotor gently hand feel rough spots binding gears etc Turn main rotor direction again check rough spots binding etc Turn radio equipment check both radio control movement slop-free smooth operation other Helicopter modelers wish com ment add above items Pauls check list Id interested hearing Wind November 1987 Safety column reprinted part article seen model club newsletter explained per form certain aerobatic maneuvers obtain maxi Continued page 20 TRIM KNIFE Tr m Knife oesigneo precisely eage trim excess cover ng material model Can oe used outside eages straght csrveo Blade can set 1/16 101/4 wth simple adj ustment screw Trim Knife mill make p81001 Overlap ouo seams Works coverig materals 6 0/0000 Trm Knfe Set ino/udes 6 b/odes $900 Trm Kn 8 Blades 5 per pace $300 B No Notches Straight Cuts Heavy oury extra sharp solos oboe Same size regular blades burrp 0000 flex cun/ng strip ping thcker materials Great big birds Big Bird Blades box 100 blades $950 Trial size package 20 blades $250 18 Model Aviation IORE POWEii WITH LESS NOISE Want plane take off climb like homesick angel Make engine before American engineering best Less 90 ElBA 9 feet make bellewersll 1 Quieter glow 2 More mellow sounding four-cycle 3 More usable power both 4 Highest power-to-weight ratio 5 The lowest idle ever 6 Increase mileage up 4 times 7 Runs cooler glow 8 No glowplugs fail 9 Increased reliability 10 Fuel available concentrate Conversion kits available 049 30 cid Schnuerle ported engines Its sim ple just change heads fuel What waiting Dust off twocycle DIESELIZE Send self-addressed 37 stamped en velope $100 information call 203-877-1670 between 730 pm and 930 pm EST Mon thru Fri DAVIS DIESEL DEVELOPMENT PO Box 141 Milford CT 06460 The leader quiet combustion technology since 1976 ELECTRIC MOTOR MOUNT JT-EL1 P054 ALL 05-10075 M01RS AU 03505-15 COBALTS 895 JIEL2 25-40 Motors 1395 UGHT WEIGHT CAST ALUMINUM Includes motor hold down strip Screws versatile motor mount prrMdes firm firewall mounting popular elecuic moto1 Mount allows exchangIng motors best flight pedomtanca Motor can mounted through firewall fowaid firewall proper CG balancingorto fir design plane ELECTRIC MOTOR TEST STAND PLANES CaSr testing breaking comparing motors. Large heat sink clamp maxes motor tUfl coo/el Can also Used boat motor mount S avaNabls hobby shop ORDER DIRECT toe Ernadote shxnant Check MO VIact MC COD accepted Add 5O UPS OO COD 0I 20 Model Aviation mum points Pattern contests part reprinted November column concerned Stall Turn included authors statement performed crosswind direc tion turn should always wind rather away wind authors rationale advice model will turn easily wind cause wind pressure tail helps swing plane over asked readers believed authors advice rationale correct About half dozen readers responded agreed Stall Turn performed crosswind turn should wind correct reasoning Without getting vector diagrams other mathematical analyses Stall Turn let try give correct rationale Pattern fliers perform Stall Turns towards wind flying crosswind First let say Im talking about steady-state wind effects wind shear gusts etc part discussion Second pressure force exerted models tail crosswind exists model contact ground cause once model airborne no such thing far model concerned crosswind Before anyone puts pen paper disagree statement let say such terms upwind downwind crosswind refer air mass wind moving relative earth ground observer standing Once airplane takes off wind experiences due its own motion through air flies other words wind always dead nose ex ception occurs during sideslip Continued page 22 Authorized Warranty ServiceFREQUENCY CONVERSION $1000 Discount Regular Repair Moat Makes Models Convefled Tuning Donewith Spectrum Analyzer K- LINE Also Service ME E/ iiI trShadL Only Full Time Servicenter Midwest 117 East Main St Northvil le Michigan 48167 [Upper Lewli /~/ 1 -313-348-0085 9m Carry Largest Only Stock m Kratt Parts World raft N alIve working KRAFT MIDWEST ILL LI HIIATI FIX Jl/octzL tyLccRECORD BREAKER 1961 BROOKLYN DODGER 56 Cabin EWEST0 Retail 512 950*INTRODUCTORY PRICE0 $3900 1938 Record Breaker 96 $6956 1939 Zipper 59$5356 1938 Kloud King 63 $62 36 19111 Brigidier 56 $4676 1941 Super Quaker 78 $7276 1940 So Long 50$3036 1936 Buccaneer 84 $5996 1938 Clipper MKI 7y59156 1937 Dallaire 108 $75 16 1935 Miss America 84 $7196 1991 Playboy Sr 80 $5116 1991 Playboy Jr 54S3116 1938 Powerhouse 89 $53 56 1990 Sailplane 78 $8976 1938 Trenton Terror 72 $6076 1940 Ranger 4653198 1939 Korda Wake 44 $1916 l939Mercur 72 $1036 kits qualify SAM events PP & R/C feature highest quality machine Cut & sanded parts Superior Competition oheet strip wood wire & window material Plans orig EF models easil convertible 3ch RIC KITS Sailplanes Electric power Gas Hobby Horn SENSOAR Glider 78 $1801 Midway Model GNOME R/G Hand Launch Glider$2408 Jolly Models FLINGER R/C HLG 58 Span $2400 Midway Model FAST EDDIE Aerobatic /01 Elec$1908 Jolly Models ELECTRICUS Electric Glider 05s$3256 Leisure PLAYBOY SR 67 Gear 01 Elect $3080 Astro ASTRO SPORT 37 Direct 85 Elect $2218 CA Addressees add 6% tax 15173 Moran St A] Send MO Visa/MC#Exp PO Box 2212 Check allow up 38 Westminster Ca 92684 days CK clearance] 714 8938311 COD Exact Charges plus $110 Hdl Cash Only Aft Hrs 719 8951283] applying rudder opposhe aileron neces sary pilot deliberately forces airplane drift some angle through air flying still lets turn competi tion aerobatics model full-scale judges seated ground score high marks maneuvers must look good rel ative ground Lets assume crosswind exactly 900 flight line blowing toward flight line other words judges feel wind blowing directly faces such situation airplane judging perform what appears to vertical climb its axis will ver tical will angled wind Similarly after turn portion maneu ver accomplished airplane must descend direction appears vertical judges Again accomplish models axis must once angled wind So because during both ascent descent aircraft its axis vertical respect ground angled toward direction apparent wind does have rotate full 1800 during actual turn portion maneuver turn direction wind turn attempted away wind axis airplane must rotate through angle greater 1800 will take longer will seem observer ground have greater turn radius As result latter vis ual phenomenon may seem airplane performed Wingover rather Stall Turn since readily recognizable difference maneuvers radius turn case wondering article aerobatics included column concerning safety consider following excerpt letContinued page 129 Weve known put out great cataloglIterally best business Because take AC seriously years catalog no exception Packed over 200 pages full color action photographs 1988 Catalog next best thing favorite AC dealer contains everything Robbe makesboats cars planes gliders accessories beginners barestormers over 450 products 1988 Catalog can bring right home Youll find Robbes 1988 Catalog AC dealer now use coupon send yours today Just $&O0 Plus youW receive $400 certificate good towards next Robbe purchase { rolibe ......... PUU mmr.aauw. Evauehamv0muav0eg omma owm U U AOAa.o CitylStatetZlp Mall Robb Modalapart 1UTmndlp Urn ed Bells Mmmd NJ OWA U Cenlflcate eoq*s 21291U Good pwdoamof *1 andoerdkect*omRobh UVELANDS GREAT PLANS Historically PronOdl 87 Con JN4 iRney $37 80K MoqoRs Rb $42. 84 Fskkoo D7 FIr $39 188 OH MaqaBswb $55 70 Boyle Ooe0o 533 98 Steer FTl7Koyd $36 68 Howard P $32 99 NOll Widsw P61 $69 68 Soprworine 560 $24 71 Osag DC3 tC47 830 891 porearie 560 $33 93 bag DC3 1C47 553 63 C rt Howl P6E $42 86 Howl, Teooss 13 532 94 C rt Howk P6E $54 64 Staat SkyCor $18 74 DsslieloGB 11 $48.72Csr0281/4 LIS $46 93 Ma osoope Spmi $36 iot car 8201/4 t&l $36r * 00 Ha Ipo Rolidag $43 68 Doagla M2 Mall $24 07 AmonRo C3 Spt 83368 Rritol Ralldog hr 930 63 Hsword RooR lb $43 39 BrosRose MtA $04 78 nor WW Ras 933 107 Oraw Rearsl F8F $54 63 C Gsbl P1 1C $43 69 tiedkra Nlt21 $28 94 Car Csbk Fl 1C $547 91 tindbora NO211 $39 66 OsHon Comet Roo $24 96 WrNWlNov ges $48 63 Hosn96rMalligon $35 74 C 6114, SB2C4 $33 94 HswMrMalligon $45 188 FairokPT19 r $59 63 Boeing P26A Pt 536 6OWses ToperAVlng $36 84 Booing P36A FIr $48 eOWaso ToperVing $48 106W500 C6 Cobin $55,73 Welld tysond $32 i 64 Boos C 170 Stoa 938 108 Westld tyos4r $49 96 Rood C170 Slog $49 57 Ford Triart 4AT $36 tool 11 Eloatro $30 76 Ford Triet 4AT 848 82 tool 11 OlecIro $40 114 Ford Triwlr 4AT $60 62 Stlneen 7/W 007 $10 96 RelIance Alrro~ 848 81 Stnsn 7/W 107 $26 93 Looolaa C2Aepb $69 133 Stnan 7/W 007838-SB Oraw J2F Dal $39 59 Bratol hr P20 $20 78 Orem J3F bask $56 118 BrisIsi FIr P200 $43 124 took Air topre, 74 Tore. Pesos $45 63 tool Air Eopro, $24 36 Ca Warhl P40 $24 83 Is, Air topren $36 60 Vo8t Canal P40 $35 77 WWe 121 RaIL $48 80 Vol Corssir P40 $69 63 C Soohowb P7C1 840 78 Look tgbtn8 P38 $38 94 C Soaks. P7C1 $57 36 Rp Soo0o Am $24 108 Silsr 138 Ampk $49 74 Rop SesBoe Aw $39 60 Oboing 100 Iport 836 70 Fper 32 Cab $39 90 Osoing 198 Sport $49 106 PIpar 33 Cob $3972 Nsrtbrop Ooweo $48 98 took Hadan Owl $30 96 Nartbrsp Gomaro $73 63 Graw POF Hllcot $28 90 StieA tsar 3/M $56 77 Booing 0170 Psrt$25 60 StinA tsw 3/M $42 103 Ba. B170 Port 555 120 lOnsA 3/M $82 68 WeetI W1irlwlnd $32 78 ConslCotPBY5A $42 68 N Anoo Navisn $39 104 ConColPRYSA $36 68 BBooooeo YToil $39 63 MCbtoo Clipper 065 77 laoowle Sdsn $25 97 MChlna Clip nr $70 72 NA 8-25 Rowbor 849 Corli, NC4 $59 3 MMoroader 826 $49 94 Corti, NC4 $69 areeenOosnIcaeoo ga*ETEE Silk OIosnruas Daerl401 OSa Ue 6122 Pos Aiway lnl Add 10% oil order tiyya & in. tIR. USA Coo & Mon EIeoohe 15% 173% iR Syoirl Pictoiol ooroloa $Z$$ Unclad Plse 1111 Pri 111 DOIIOO olon 5100 II oi, tocelan odd 8100 CLEVELAND MODEL&SUPPLYCo oortOooeceoeao 183070 BOTROIT AVE CLEVELAND OHIO 44102 wcacew Rasle Phoot Ia 3 IS PMF ST lOr 0 ST 112101 9612000 22 Model Aviation Safety/Preston Continued page 22 ter received Stasi Poulos Dallas TX recently helping newcomer RC fly ing soloed become quite confident ability lost almost fear about flying wind day watched him take off 15 mph steady headwind ascent beautiful could until turned downwind made decision throttle back since plane seemed pick up much speed downwind leg plane banked slightly tried correct bank ailerons horror hollered ailerons werent work ing Yet still throttle elevator control Convinced victim chanical radio failure handed threw transmitter regained control landed tried explain him what happened plane turned downwind its air speed did change its speed over ground did student felt plane passing him too fast solution throt tIe back failed realize did re duce speed plane passed him no real indication planes airspeed reduced airspeed until plane stalled Ailerons change lift aircrafts wings no lift can swing want youll never know difference student said No way plane wasnt moving slow What really saw however stalled plane moving air mass Stasis description incident makes wonder radios have sent off correction failures really didnt occur opinion appreciation visual effect wind models flight characteristics has direct bearing safely fly Have safe month watch out downwind turns Schweizer/Moskal Continued page 36 forward canopy molded piece plastic clamped frame heated oven drawn over wooden plug method has described times other articlesone best being Steve Gray March 1987 issue Model Builder would rather make canopy available ready-made Shabo Scale 2416 North 66th Wauwatosa WI 52213 Plan canopy hold-downsrubberbands mini ature hooks simplest lightest Route pair inner Nyrods PL PR spoiler servo glue Install airborne gear check ac tions correcting binding rubbjng Complete turtledeck structure add crossgrain floor Xe-in balsa E U Glue both halves F3 four A-in balsa lower main stringer standoffs Laminate lower main stringer two pieces A-in-sq spruce Glue stand off formers /6-in floor fuse lage glue stringer running keel G Glue 1/16 angular balsa gussets brace standoffs floor Add piece Y32-sq spruce doubling top longeron Tl tapering aft F Complete two lower stringers running C2 F3 aft F3 keel Form skid two pieces 1A x /2-in spruce laminating form made common nails board Drill skid screw attach points re move cover glass cloth paint match scheme Some 1-26 aircraft fabric fairing cover gap between skid fuselage quite often no fair ing used tail nose cone built up balsa Shape tail cone A-in core Lite Ply hold shape ply core doubled A-in balsa carved correct taper Tack-glue fuselage check maximum travel elevator horn will later glued after painting covering carefully drilled center nose cone after shaping soft balsa %2-in ply disc matches former 4-40 hex head bolt eased piece -in brass tube used bushing created N shape 3A2-in ply would slip behind drilled 4-40 blind mounting nut holds nose cone place bolt tight ened access hole 4-40 bolt serves scale air vent common 1-26 nose cones battery pack way also has advantage being acces sible acts balancing weight STICKY BUSINESS NOW AVAILABLE ON VHS VIDEO ADHESIVEUU Frank Tiano Producer Bob Violett nician ira KEEP YOU OWED TO YOUR SEAT Contains everything want know about Zap Loctite adhesive product informative Humorous 2 hours two intermissions ideal club meetings Produced Frank Tiano Techniques Frank Tiano Bob Viotett NOW AVAILABLE FOR SHOWING $3495 Plus $2 Shipping & Handling Name CityState __________ Zip Send $3695 $3495 plus $2 shipping & handling check money order Frank Tiano Enterprises 2460 SW 85 Terrace Davie FL 33324 Allow 4-6 weeks delivery Sorry cannot deliver post office boxes MA February 1988 129 WORLD CLASS tA Retr *6 Tony Frackowiaks Challenge IV Kit Atlanta KitDash Kit Hattori Headers Pipes AMA&FAIRC Aerobatic Specialties PO Box 388914-248-8603 Lincoindale NY 10540 Send $100 catalog FIBERGLASS PARTS Over 237 cowls kit scratch built models Also over 34 round cowls ranging 4 14-718 diameter 55 duff size & shape wheel pants custom Make Parts Vacuum Form Canopies Pining send $1 unqist kt TAD FIBERILASS SPECIALTIES 30925 nlock Dept 4 Garden city Ml 48135 PHONE 313421-6358 BRAZED & HEAI-TREAIED WIRE GEARS & CABANES PHONE 313 261-9064
Edition: Model Aviation - 1988/02
Page Numbers: 14, 16, 18, 20, 22, 129
John Preston 7afety Comes First Northampton St NW Washington DC 20015 Sharing airspace full-scale planes Use caution Helicopter preflight checklist Learn wind affects RC planes flight path safety FATAL ATTRACTION Back September 1980 issue Model Aviation columnist men tioned incident occurred West Coast involved collision between RC Sailplane hang glider Fortunately hang glider pilot suffered no serious injuries comment incident Simultaneous op eration RC Sailplanes hang gliders es sentially same site appears hazardous pursuit editorial Switch October 1987 issue British model magazine Radio Control Models & Electronics RCM&E re cently came attention devoted al entirely discussion another collision between Slope Soarer hang glider case hang glider pilot suffered fatal injur ies Devils Dyke Sussex England may long way Pacific Coast US However no matter fly share airspace other aircraft whether full-scale models ever present risk collision cir cumstances surrounding two incidents took place some seven years apart suf ficiently similar believe short dis cussion Devils Dyke incident described RCM&E necessary caution readers may fly RC Sailplanes slope shared hang gliders Apparently previous problems concerning cooperation between model hang glider pilots Devils Dyke However worked out some type agreement such hang gliders would confine activi ties area left public house pub RCers used area right day accident May 10 1987 model flier launched Salto Sailplane late afternoon flying about 10 15 min utes observed some hang gliders drifted airspace normally confined model-flying activities Recognizing poten tially dangerous situation developing modeler elected land Sailplane promptly However during downwind leg ap proach hang glider suddenly appeared field vision despite attempted evasive actlon collision occurred starboard wing hang glider promptly failed followed shortly similar fail ure port wing estimated altitude about 80 ft hang glider pilot insuffi cient time deploy parachute wearing sustained fatal injuries upon impact ground midair collision point close wing root Sailplane struck severed 3mm-diameter flying wire starboard wing hang glider later found fly ing wire hang gliders wing cut balsa leading edge models wing contacted aileron control brassand-steel wing joiner model models weight approximately four pounds together estimated closing speed 45-60 mph generated force hang gliders wing fly ing wire unable withstand inquest death hang glider pilot verdict death misadventure other words deceased assumed element risk undertaking no charges filed against pilot model Sailplane As anyone has involved modelto-model midair collision will recall concen tration flying own model such second model appears field vi sion generally too late take action avoid collision recommendation may fly slope potential shared airspace have observer present times sole job alert model pilots encroachment full-scale aircraft addition Slope Soaring club activity slope shared hang gliding club costs work out some form amicable agreement between two clubs such minimize eliminate pos sibility midair collision between aircraft two activities Helicopter safety October 1987 issue Model Aviation Safety column carried arti cle sent reader stated Because high degree complexity greater num ber moving parts probable Hel icopters prone mechanical failure fixed-wing models recent letter Lt Col Paul Tradelius took issue statement Pauls letter ex pressed following believe have done injustice Helicopters national maga zine because familiar least part Pauls accusation true certainly am familiar model Helicopters Since have neither built nor flown have rely others expert oper ation information safe practices Pauls letter went point out unlike fixed-wing models mechanical parts Helicopters such control linkages etc exposed can therefore checked easily Continued page 16 C -ii WELL IIT OFF UESS YOU AE VERY SNSIT1VE TO GLUE SMELLS odel Aviation K column provided address Items concern regarding safety aspects model aviation activities Content column however opinion author does necessarily represent official position Academy Model Aeronautics AVAILABLE IN 4-COLORS. Red Yellow White Black Helicopter Tail Rotor Blade Covering 7/8 x 9 Helicopter Tail Rotor Blade Covering 7/8 x 9 Helicopter Tail Rotor Blade Covering 7/8 x 9 Helicopter Tail Rotor Blade Covering 7/8 x 9 Helicopter Tail Rotor Blade Covering 1-7/16x 12 Helicopter Tail Rotor Blade Covering 1-7/16 x 1 2 Helicopter Tail Rotor Blade Covering 1-7/16x 12 Helicopter Tail Rotor Blade Covering 1-7/16x 12 Helicopter Main Rotor Blade Covering 2 x 48 Heiicopter Main Rotor Blade Coverina 2 x 48 DELUXE Nit $28500 plus shipping $1100 Everything full kit wing spars installed wiugn stab turttu deck butch & fin pie-shinned 1116 balsa MAKES BUILOtNG GUICKI Span85 Length66 Wing area 1213 sq Weight . 165 lbs Power035-040 G38-G62 FM JOt $21500 plus sllIppin $1100 Eveuytldeg scratch kit plus i weed pails complete mdd A11 wood & foam construction Flberglas cowl & pants 2-plece plug-in wings Foam core airfoiled tail surfaces No tail brace wires required FOR MORE INFO OR TO PLACE ORDER CONTACT SPIRIT LAKE HOBBIES Ph 712 336-5586 1621 Hill Ave Spirit Lake IA 5136 HEAT SHRINKABLE 4 MILTHICK FILM EASY TO FOLLOW INSTRUCTIONS 478 Helicopter Main Rotor Blade Covering 2 x 48 479 Helicopter Main Rotor Blade Covering 2 x 48 480 Helicopter Main Rotor Blade Covering 2-1/2x 60 481 Helicopter Main Rotor Blade Covering 2-1/2x 60 482 Helicopter Main Rotor Blade Covering 2-1/2x 60 483 Helicopter Main Rotor Blade Covering 2-1/2x 60 484 Helicopter Main Rotor Blade Covering 3-1/4 x 60 485 Helicopter Main Rotor Blade Covering 3-1/4 x 60 486 Helicopter Main Rotor Blade Covering 3-1/4 x 60 487 Helicopter Main Rotor Blade Covering 3-1/4 x 60 So added complexity doesnt necessarily make prone mechanical failure flier performs thorough preflight inspection October 1987 Safety column ended segment Helicopters asking readers preflight checklist type model would willing send copy Well Paul responded request cluded such checklist letter noted some parts may well apply fixed-wing models well PREFLIGHT CHECKLIST FOR MODEL HELICOPTERS 1 Always remember Murphys Law some thing can go wrong will Therefore never sume because particular part has given trouble past will continue work prop erly future means INSPECT EV ERYTHING 2 Never assume something isnt working correctly will good enough flight Whatever working correctly will certainly fix itself things can go bad worse 3 Get preflight routine stick Build habitual pattern checking everything certain sequence certain way write checklist needed Add checklist find other areas suspect 4 Some things check Helicopter follows Before looking little pieces give overall Helicopter general examination gray fuel residue could indication part coming loose vibrating Starting nose canopy re moved check radio installation secure Continued page 18 16 Model Aviation WITH EASY TO APPLY HELICOPTER BLADE COVERING FIVE SIZES AVAILABLE 7/8 x 9 1-7/16 x 12 2x 48 2-1/2x 60and 3-1/4x 60 468Wht 469BIk 470Red 471Yel 472Wht 473Bik 474Red 475Yel 476Wht 477BIki Red Yel Wht Bik Red Yel Wht Bik Red Yel eI TR260 p New French Aerobatic Design 114 Stnnd-nff Rrnl Kit Scratch ff11 $10300 plus shlpplng $1100 CuwI pants canupy lauding gear plans maw cares tot wing lad surfaces turtle deck & batch ikO~x 1063 Lorain Ohio 44055 e 216 282-8354 PijierCubPEANUTSCALE Piper Vagabond Piper Cub Stinuon 125 Outdoor kits $750 Light Indoor kits $795 OUTDOOR PEANUT Super ... $750 SPORT SCALE PC-6 Porter Taylor Craft Stinson Voyager Rubber CO Power Kits each. $850 SPORT MODELS An Embryo Model 18 Span designed winl beginners experts. $850 HARD-TO-FIND ITEMS Early Bird tiusue Antique Aircraft*596 True OlduJupanane Tiauue lOin 3 cobra*096 JupaneauTiusue 12 inOcolore*396 Microlita Silver$396 Microfilm Glue Solvent Conduutuer Paper 3 abruets*460 Plan Service over 17 Scale Spore Scale ft Peanut Scala Rubber Strip 020 thre 085each $196 3132 thru 5132each *250 Winder61 Mark 161 . *1296 complete urea Brown C0 Motore Balsa Wood Outdoor ft Indoor Sheets ft Strips Add 10% Poatage mum Postage *150 COMPLETE CATALOG *150 m WE ARE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY Satisfaction Guaranteed Direct Only BALSA SHEETS 36 48 30I 1/18233 3/32240 1/8 243 3/16245 14 256 1/32337 1/28337 1/163374931 3/32 3445637 1/8 3547145 3/16 3628258 1/4 3735861 5/16385 3/8 3 88 124 71 1/2 3 110 195 3/4 3 195 1/1645876 48 3/32 47094 56 1/8 4 80 106 66 3/16483 12275 1/44/10 134 64 3/84195 225 1/2 4 225 261 MATCHED SHEETS 42 3324100 1/94108 0164120 1/44131 BALSA STICKS 3648 1/16 1/409 1/16 3/810 1/16 1/214 3/32 1/410 3/32 3/612 3/32 1/216 1/8 1/808 1/8 1/41116 1/6 3/81218 3/8 1/21624 3/16 3/161116 3/16 3/517 3/16 1/32230 1/4 1/41624 1/4 3,81926 1/4 1/22/30 1/4 3/43444 1/4 140 5/165/162128 3/8 3/82737 3/8 1/23246 3/8 3/44255 3/8 192 1/2 /23653 1/2 682 1/2 158 5/5 5/848 3/4 3/467 BALSA HOT LINE Call 806 74S-6394 10 am -6pm Ceutral Time LONE STAR MODELS 123 57th St Lubbock TX 79412 IA * CC LSA TRIANGLES3636 1/41/4 2549 3/6 3/8 3049 1/21/2 3549 3/43/4 4856 1 1 5567 76 BALSA PLANKS3688 11 65115 1215039 13200220 14280300 11/2327578 11/2436081 22225100 233251/7 24435138 33495207 34659282 TAPERED SHEETS36 1/42 65TRAILING EDGE36 14385 14132 3/8259 516 / 1439 3/8398 381 246 1/23120 12270 LONE STAR EPOXY 9,L,t--895 5,598 15,598 30 r,r588 INSTANT6LUE / k298 / o Thi238 2, Thick950 2c 1/,550 CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% a serious modeler want performance must try 4-6 lb balsa LIGHT 4-6 LB WOOD 1/323 1/203 1/163 3/323 1/83 3/163 1/4 3 3/8 3 123 34 3 13 1/164 332 84 3164 144 384 1 2 SSWOOD 3/16 3/1 6 3/16 1/4 3/183/8 3/161/2 3/16 3/4 1/4 1/4 1/43/8 1/43/4 3/83/8 3/81/2 3/83/4 1/2 1/2 1/23/4 48 26 30 35 46 60 42 48 80 60 70 80 80 100 BUNDLE DEALS 201/6336685 20-1/164361020 203/32336845 153/32438955 1518336715 101/6436675 15316335900 103/16436810 101/4336630 101/4436800 103/8336890 53/8436628 5-1/2336940 51/2436855 103/32445845 51/8448485 53/16448585 51/4448625 PINE STICKS 36 48 1/8 18 18 14 1/83/8 316 316 316 3/8 3/1612 1/4 14 1/43/8 14 1 2 3838 1317 1623 2027 1724 2332 3040 2637 3042 3447 3752 5/16 SPRUCE STICKS 36 48 38 18 1815 16 141624 1/6 3/82029 3/1631834 14 143149 14 3/83659 3/8 3/84963 / 3/8 125570 1/2 1/26080 12 345988 SPRUCE TRIANGLES 3/83/8 1/2 1/2 34 3/4 36 45 01 77 48 150 300 HARD MAPLE 1/4 3/83/8 3/81/2 3/8 3/4 1/2 3/4 18 40 49 50 58 68 BIRCH DO WELS36 /809 31611 1414 25 32 3PLYBIRCH48 1/5412525 1/3212425 1/1612435 1/612450 SPLSBIRCH48 33212570 1612585 31612585 1412600 GROOVED LII MOUNTS 12 IncheS 3/83/4/18/40 3/83/4/532/40 1/23/4/3/16/45 LITEPL V 1/86 1/8 12 Handling Charge$300 pay UPS Add $200 COD $300 extra PP APO FPO WeaccplVia Maw Cad pe900a/ chocks COD 41/8% 14 ,Txa US xx,ercyoIy Mn,imOrde $1000 — ~ u.j 11 LI k [0] I] ires place properly tied down etc Fuel tank fittings tubing good condition Pushrods servos secure servo arms respective belicranks etc Check worn ball links loose balls Engine muffler mounted securely Clutch starter shaft main drive gear tail rotor drive gear move freely mesh prop erly Swashplate head secure no loose nuts bolts etc Lightly oil head bearings needed Check landing gear tail boom braces secure Check tightness tail rotor drive setscrews use too much force try over tighten setscrews will become rounded Check tail rotor blades blade holders bellcrank etc wear damage Again oil lightly needed Check horizontal vertical fin Turn tail rotor gently hand feel rough spots binding gears etc Turn main rotor direction again check rough spots binding etc Turn radio equipment check both radio control movement slop-free smooth operation other Helicopter modelers wish com ment add above items Pauls check list Id interested hearing Wind November 1987 Safety column reprinted part article seen model club newsletter explained per form certain aerobatic maneuvers obtain maxi Continued page 20 TRIM KNIFE Tr m Knife oesigneo precisely eage trim excess cover ng material model Can oe used outside eages straght csrveo Blade can set 1/16 101/4 wth simple adj ustment screw Trim Knife mill make p81001 Overlap ouo seams Works coverig materals 6 0/0000 Trm Knfe Set ino/udes 6 b/odes $900 Trm Kn 8 Blades 5 per pace $300 B No Notches Straight Cuts Heavy oury extra sharp solos oboe Same size regular blades burrp 0000 flex cun/ng strip ping thcker materials Great big birds Big Bird Blades box 100 blades $950 Trial size package 20 blades $250 18 Model Aviation IORE POWEii WITH LESS NOISE Want plane take off climb like homesick angel Make engine before American engineering best Less 90 ElBA 9 feet make bellewersll 1 Quieter glow 2 More mellow sounding four-cycle 3 More usable power both 4 Highest power-to-weight ratio 5 The lowest idle ever 6 Increase mileage up 4 times 7 Runs cooler glow 8 No glowplugs fail 9 Increased reliability 10 Fuel available concentrate Conversion kits available 049 30 cid Schnuerle ported engines Its sim ple just change heads fuel What waiting Dust off twocycle DIESELIZE Send self-addressed 37 stamped en velope $100 information call 203-877-1670 between 730 pm and 930 pm EST Mon thru Fri DAVIS DIESEL DEVELOPMENT PO Box 141 Milford CT 06460 The leader quiet combustion technology since 1976 ELECTRIC MOTOR MOUNT JT-EL1 P054 ALL 05-10075 M01RS AU 03505-15 COBALTS 895 JIEL2 25-40 Motors 1395 UGHT WEIGHT CAST ALUMINUM Includes motor hold down strip Screws versatile motor mount prrMdes firm firewall mounting popular elecuic moto1 Mount allows exchangIng motors best flight pedomtanca Motor can mounted through firewall fowaid firewall proper CG balancingorto fir design plane ELECTRIC MOTOR TEST STAND PLANES CaSr testing breaking comparing motors. Large heat sink clamp maxes motor tUfl coo/el Can also Used boat motor mount S avaNabls hobby shop ORDER DIRECT toe Ernadote shxnant Check MO VIact MC COD accepted Add 5O UPS OO COD 0I 20 Model Aviation mum points Pattern contests part reprinted November column concerned Stall Turn included authors statement performed crosswind direc tion turn should always wind rather away wind authors rationale advice model will turn easily wind cause wind pressure tail helps swing plane over asked readers believed authors advice rationale correct About half dozen readers responded agreed Stall Turn performed crosswind turn should wind correct reasoning Without getting vector diagrams other mathematical analyses Stall Turn let try give correct rationale Pattern fliers perform Stall Turns towards wind flying crosswind First let say Im talking about steady-state wind effects wind shear gusts etc part discussion Second pressure force exerted models tail crosswind exists model contact ground cause once model airborne no such thing far model concerned crosswind Before anyone puts pen paper disagree statement let say such terms upwind downwind crosswind refer air mass wind moving relative earth ground observer standing Once airplane takes off wind experiences due its own motion through air flies other words wind always dead nose ex ception occurs during sideslip Continued page 22 Authorized Warranty ServiceFREQUENCY CONVERSION $1000 Discount Regular Repair Moat Makes Models Convefled Tuning Donewith Spectrum Analyzer K- LINE Also Service ME E/ iiI trShadL Only Full Time Servicenter Midwest 117 East Main St Northvil le Michigan 48167 [Upper Lewli /~/ 1 -313-348-0085 9m Carry Largest Only Stock m Kratt Parts World raft N alIve working KRAFT MIDWEST ILL LI HIIATI FIX Jl/octzL tyLccRECORD BREAKER 1961 BROOKLYN DODGER 56 Cabin EWEST0 Retail 512 950*INTRODUCTORY PRICE0 $3900 1938 Record Breaker 96 $6956 1939 Zipper 59$5356 1938 Kloud King 63 $62 36 19111 Brigidier 56 $4676 1941 Super Quaker 78 $7276 1940 So Long 50$3036 1936 Buccaneer 84 $5996 1938 Clipper MKI 7y59156 1937 Dallaire 108 $75 16 1935 Miss America 84 $7196 1991 Playboy Sr 80 $5116 1991 Playboy Jr 54S3116 1938 Powerhouse 89 $53 56 1990 Sailplane 78 $8976 1938 Trenton Terror 72 $6076 1940 Ranger 4653198 1939 Korda Wake 44 $1916 l939Mercur 72 $1036 kits qualify SAM events PP & R/C feature highest quality machine Cut & sanded parts Superior Competition oheet strip wood wire & window material Plans orig EF models easil convertible 3ch RIC KITS Sailplanes Electric power Gas Hobby Horn SENSOAR Glider 78 $1801 Midway Model GNOME R/G Hand Launch Glider$2408 Jolly Models FLINGER R/C HLG 58 Span $2400 Midway Model FAST EDDIE Aerobatic /01 Elec$1908 Jolly Models ELECTRICUS Electric Glider 05s$3256 Leisure PLAYBOY SR 67 Gear 01 Elect $3080 Astro ASTRO SPORT 37 Direct 85 Elect $2218 CA Addressees add 6% tax 15173 Moran St A] Send MO Visa/MC#Exp PO Box 2212 Check allow up 38 Westminster Ca 92684 days CK clearance] 714 8938311 COD Exact Charges plus $110 Hdl Cash Only Aft Hrs 719 8951283] applying rudder opposhe aileron neces sary pilot deliberately forces airplane drift some angle through air flying still lets turn competi tion aerobatics model full-scale judges seated ground score high marks maneuvers must look good rel ative ground Lets assume crosswind exactly 900 flight line blowing toward flight line other words judges feel wind blowing directly faces such situation airplane judging perform what appears to vertical climb its axis will ver tical will angled wind Similarly after turn portion maneu ver accomplished airplane must descend direction appears vertical judges Again accomplish models axis must once angled wind So because during both ascent descent aircraft its axis vertical respect ground angled toward direction apparent wind does have rotate full 1800 during actual turn portion maneuver turn direction wind turn attempted away wind axis airplane must rotate through angle greater 1800 will take longer will seem observer ground have greater turn radius As result latter vis ual phenomenon may seem airplane performed Wingover rather Stall Turn since readily recognizable difference maneuvers radius turn case wondering article aerobatics included column concerning safety consider following excerpt letContinued page 129 Weve known put out great cataloglIterally best business Because take AC seriously years catalog no exception Packed over 200 pages full color action photographs 1988 Catalog next best thing favorite AC dealer contains everything Robbe makesboats cars planes gliders accessories beginners barestormers over 450 products 1988 Catalog can bring right home Youll find Robbes 1988 Catalog AC dealer now use coupon send yours today Just $&O0 Plus youW receive $400 certificate good towards next Robbe purchase { rolibe ......... PUU mmr.aauw. Evauehamv0muav0eg omma owm U U AOAa.o CitylStatetZlp Mall Robb Modalapart 1UTmndlp Urn ed Bells Mmmd NJ OWA U Cenlflcate eoq*s 21291U Good pwdoamof *1 andoerdkect*omRobh UVELANDS GREAT PLANS Historically PronOdl 87 Con JN4 iRney $37 80K MoqoRs Rb $42. 84 Fskkoo D7 FIr $39 188 OH MaqaBswb $55 70 Boyle Ooe0o 533 98 Steer FTl7Koyd $36 68 Howard P $32 99 NOll Widsw P61 $69 68 Soprworine 560 $24 71 Osag DC3 tC47 830 891 porearie 560 $33 93 bag DC3 1C47 553 63 C rt Howl P6E $42 86 Howl, Teooss 13 532 94 C rt Howk P6E $54 64 Staat SkyCor $18 74 DsslieloGB 11 $48.72Csr0281/4 LIS $46 93 Ma osoope Spmi $36 iot car 8201/4 t&l $36r * 00 Ha Ipo Rolidag $43 68 Doagla M2 Mall $24 07 AmonRo C3 Spt 83368 Rritol Ralldog hr 930 63 Hsword RooR lb $43 39 BrosRose MtA $04 78 nor WW Ras 933 107 Oraw Rearsl F8F $54 63 C Gsbl P1 1C $43 69 tiedkra Nlt21 $28 94 Car Csbk Fl 1C $547 91 tindbora NO211 $39 66 OsHon Comet Roo $24 96 WrNWlNov ges $48 63 Hosn96rMalligon $35 74 C 6114, SB2C4 $33 94 HswMrMalligon $45 188 FairokPT19 r $59 63 Boeing P26A Pt 536 6OWses ToperAVlng $36 84 Booing P36A FIr $48 eOWaso ToperVing $48 106W500 C6 Cobin $55,73 Welld tysond $32 i 64 Boos C 170 Stoa 938 108 Westld tyos4r $49 96 Rood C170 Slog $49 57 Ford Triart 4AT $36 tool 11 Eloatro $30 76 Ford Triet 4AT 848 82 tool 11 OlecIro $40 114 Ford Triwlr 4AT $60 62 Stlneen 7/W 007 $10 96 RelIance Alrro~ 848 81 Stnsn 7/W 107 $26 93 Looolaa C2Aepb $69 133 Stnan 7/W 007838-SB Oraw J2F Dal $39 59 Bratol hr P20 $20 78 Orem J3F bask $56 118 BrisIsi FIr P200 $43 124 took Air topre, 74 Tore. Pesos $45 63 tool Air Eopro, $24 36 Ca Warhl P40 $24 83 Is, Air topren $36 60 Vo8t Canal P40 $35 77 WWe 121 RaIL $48 80 Vol Corssir P40 $69 63 C Soohowb P7C1 840 78 Look tgbtn8 P38 $38 94 C Soaks. P7C1 $57 36 Rp Soo0o Am $24 108 Silsr 138 Ampk $49 74 Rop SesBoe Aw $39 60 Oboing 100 Iport 836 70 Fper 32 Cab $39 90 Osoing 198 Sport $49 106 PIpar 33 Cob $3972 Nsrtbrop Ooweo $48 98 took Hadan Owl $30 96 Nartbrsp Gomaro $73 63 Graw POF Hllcot $28 90 StieA tsar 3/M $56 77 Booing 0170 Psrt$25 60 StinA tsw 3/M $42 103 Ba. B170 Port 555 120 lOnsA 3/M $82 68 WeetI W1irlwlnd $32 78 ConslCotPBY5A $42 68 N Anoo Navisn $39 104 ConColPRYSA $36 68 BBooooeo YToil $39 63 MCbtoo Clipper 065 77 laoowle Sdsn $25 97 MChlna Clip nr $70 72 NA 8-25 Rowbor 849 Corli, NC4 $59 3 MMoroader 826 $49 94 Corti, NC4 $69 areeenOosnIcaeoo ga*ETEE Silk OIosnruas Daerl401 OSa Ue 6122 Pos Aiway lnl Add 10% oil order tiyya & in. tIR. USA Coo & Mon EIeoohe 15% 173% iR Syoirl Pictoiol ooroloa $Z$$ Unclad Plse 1111 Pri 111 DOIIOO olon 5100 II oi, tocelan odd 8100 CLEVELAND MODEL&SUPPLYCo oortOooeceoeao 183070 BOTROIT AVE CLEVELAND OHIO 44102 wcacew Rasle Phoot Ia 3 IS PMF ST lOr 0 ST 112101 9612000 22 Model Aviation Safety/Preston Continued page 22 ter received Stasi Poulos Dallas TX recently helping newcomer RC fly ing soloed become quite confident ability lost almost fear about flying wind day watched him take off 15 mph steady headwind ascent beautiful could until turned downwind made decision throttle back since plane seemed pick up much speed downwind leg plane banked slightly tried correct bank ailerons horror hollered ailerons werent work ing Yet still throttle elevator control Convinced victim chanical radio failure handed threw transmitter regained control landed tried explain him what happened plane turned downwind its air speed did change its speed over ground did student felt plane passing him too fast solution throt tIe back failed realize did re duce speed plane passed him no real indication planes airspeed reduced airspeed until plane stalled Ailerons change lift aircrafts wings no lift can swing want youll never know difference student said No way plane wasnt moving slow What really saw however stalled plane moving air mass Stasis description incident makes wonder radios have sent off correction failures really didnt occur opinion appreciation visual effect wind models flight characteristics has direct bearing safely fly Have safe month watch out downwind turns Schweizer/Moskal Continued page 36 forward canopy molded piece plastic clamped frame heated oven drawn over wooden plug method has described times other articlesone best being Steve Gray March 1987 issue Model Builder would rather make canopy available ready-made Shabo Scale 2416 North 66th Wauwatosa WI 52213 Plan canopy hold-downsrubberbands mini ature hooks simplest lightest Route pair inner Nyrods PL PR spoiler servo glue Install airborne gear check ac tions correcting binding rubbjng Complete turtledeck structure add crossgrain floor Xe-in balsa E U Glue both halves F3 four A-in balsa lower main stringer standoffs Laminate lower main stringer two pieces A-in-sq spruce Glue stand off formers /6-in floor fuse lage glue stringer running keel G Glue 1/16 angular balsa gussets brace standoffs floor Add piece Y32-sq spruce doubling top longeron Tl tapering aft F Complete two lower stringers running C2 F3 aft F3 keel Form skid two pieces 1A x /2-in spruce laminating form made common nails board Drill skid screw attach points re move cover glass cloth paint match scheme Some 1-26 aircraft fabric fairing cover gap between skid fuselage quite often no fair ing used tail nose cone built up balsa Shape tail cone A-in core Lite Ply hold shape ply core doubled A-in balsa carved correct taper Tack-glue fuselage check maximum travel elevator horn will later glued after painting covering carefully drilled center nose cone after shaping soft balsa %2-in ply disc matches former 4-40 hex head bolt eased piece -in brass tube used bushing created N shape 3A2-in ply would slip behind drilled 4-40 blind mounting nut holds nose cone place bolt tight ened access hole 4-40 bolt serves scale air vent common 1-26 nose cones battery pack way also has advantage being acces sible acts balancing weight STICKY BUSINESS NOW AVAILABLE ON VHS VIDEO ADHESIVEUU Frank Tiano Producer Bob Violett nician ira KEEP YOU OWED TO YOUR SEAT Contains everything want know about Zap Loctite adhesive product informative Humorous 2 hours two intermissions ideal club meetings Produced Frank Tiano Techniques Frank Tiano Bob Viotett NOW AVAILABLE FOR SHOWING $3495 Plus $2 Shipping & Handling Name CityState __________ Zip Send $3695 $3495 plus $2 shipping & handling check money order Frank Tiano Enterprises 2460 SW 85 Terrace Davie FL 33324 Allow 4-6 weeks delivery Sorry cannot deliver post office boxes MA February 1988 129 WORLD CLASS tA Retr *6 Tony Frackowiaks Challenge IV Kit Atlanta KitDash Kit Hattori Headers Pipes AMA&FAIRC Aerobatic Specialties PO Box 388914-248-8603 Lincoindale NY 10540 Send $100 catalog FIBERGLASS PARTS Over 237 cowls kit scratch built models Also over 34 round cowls ranging 4 14-718 diameter 55 duff size & shape wheel pants custom Make Parts Vacuum Form Canopies Pining send $1 unqist kt TAD FIBERILASS SPECIALTIES 30925 nlock Dept 4 Garden city Ml 48135 PHONE 313421-6358 BRAZED & HEAI-TREAIED WIRE GEARS & CABANES PHONE 313 261-9064
Edition: Model Aviation - 1988/02
Page Numbers: 14, 16, 18, 20, 22, 129
John Preston 7afety Comes First Northampton St NW Washington DC 20015 Sharing airspace full-scale planes Use caution Helicopter preflight checklist Learn wind affects RC planes flight path safety FATAL ATTRACTION Back September 1980 issue Model Aviation columnist men tioned incident occurred West Coast involved collision between RC Sailplane hang glider Fortunately hang glider pilot suffered no serious injuries comment incident Simultaneous op eration RC Sailplanes hang gliders es sentially same site appears hazardous pursuit editorial Switch October 1987 issue British model magazine Radio Control Models & Electronics RCM&E re cently came attention devoted al entirely discussion another collision between Slope Soarer hang glider case hang glider pilot suffered fatal injur ies Devils Dyke Sussex England may long way Pacific Coast US However no matter fly share airspace other aircraft whether full-scale models ever present risk collision cir cumstances surrounding two incidents took place some seven years apart suf ficiently similar believe short dis cussion Devils Dyke incident described RCM&E necessary caution readers may fly RC Sailplanes slope shared hang gliders Apparently previous problems concerning cooperation between model hang glider pilots Devils Dyke However worked out some type agreement such hang gliders would confine activi ties area left public house pub RCers used area right day accident May 10 1987 model flier launched Salto Sailplane late afternoon flying about 10 15 min utes observed some hang gliders drifted airspace normally confined model-flying activities Recognizing poten tially dangerous situation developing modeler elected land Sailplane promptly However during downwind leg ap proach hang glider suddenly appeared field vision despite attempted evasive actlon collision occurred starboard wing hang glider promptly failed followed shortly similar fail ure port wing estimated altitude about 80 ft hang glider pilot insuffi cient time deploy parachute wearing sustained fatal injuries upon impact ground midair collision point close wing root Sailplane struck severed 3mm-diameter flying wire starboard wing hang glider later found fly ing wire hang gliders wing cut balsa leading edge models wing contacted aileron control brassand-steel wing joiner model models weight approximately four pounds together estimated closing speed 45-60 mph generated force hang gliders wing fly ing wire unable withstand inquest death hang glider pilot verdict death misadventure other words deceased assumed element risk undertaking no charges filed against pilot model Sailplane As anyone has involved modelto-model midair collision will recall concen tration flying own model such second model appears field vi sion generally too late take action avoid collision recommendation may fly slope potential shared airspace have observer present times sole job alert model pilots encroachment full-scale aircraft addition Slope Soaring club activity slope shared hang gliding club costs work out some form amicable agreement between two clubs such minimize eliminate pos sibility midair collision between aircraft two activities Helicopter safety October 1987 issue Model Aviation Safety column carried arti cle sent reader stated Because high degree complexity greater num ber moving parts probable Hel icopters prone mechanical failure fixed-wing models recent letter Lt Col Paul Tradelius took issue statement Pauls letter ex pressed following believe have done injustice Helicopters national maga zine because familiar least part Pauls accusation true certainly am familiar model Helicopters Since have neither built nor flown have rely others expert oper ation information safe practices Pauls letter went point out unlike fixed-wing models mechanical parts Helicopters such control linkages etc exposed can therefore checked easily Continued page 16 C -ii WELL IIT OFF UESS YOU AE VERY SNSIT1VE TO GLUE SMELLS odel Aviation K column provided address Items concern regarding safety aspects model aviation activities Content column however opinion author does necessarily represent official position Academy Model Aeronautics AVAILABLE IN 4-COLORS. Red Yellow White Black Helicopter Tail Rotor Blade Covering 7/8 x 9 Helicopter Tail Rotor Blade Covering 7/8 x 9 Helicopter Tail Rotor Blade Covering 7/8 x 9 Helicopter Tail Rotor Blade Covering 7/8 x 9 Helicopter Tail Rotor Blade Covering 1-7/16x 12 Helicopter Tail Rotor Blade Covering 1-7/16 x 1 2 Helicopter Tail Rotor Blade Covering 1-7/16x 12 Helicopter Tail Rotor Blade Covering 1-7/16x 12 Helicopter Main Rotor Blade Covering 2 x 48 Heiicopter Main Rotor Blade Coverina 2 x 48 DELUXE Nit $28500 plus shipping $1100 Everything full kit wing spars installed wiugn stab turttu deck butch & fin pie-shinned 1116 balsa MAKES BUILOtNG GUICKI Span85 Length66 Wing area 1213 sq Weight . 165 lbs Power035-040 G38-G62 FM JOt $21500 plus sllIppin $1100 Eveuytldeg scratch kit plus i weed pails complete mdd A11 wood & foam construction Flberglas cowl & pants 2-plece plug-in wings Foam core airfoiled tail surfaces No tail brace wires required FOR MORE INFO OR TO PLACE ORDER CONTACT SPIRIT LAKE HOBBIES Ph 712 336-5586 1621 Hill Ave Spirit Lake IA 5136 HEAT SHRINKABLE 4 MILTHICK FILM EASY TO FOLLOW INSTRUCTIONS 478 Helicopter Main Rotor Blade Covering 2 x 48 479 Helicopter Main Rotor Blade Covering 2 x 48 480 Helicopter Main Rotor Blade Covering 2-1/2x 60 481 Helicopter Main Rotor Blade Covering 2-1/2x 60 482 Helicopter Main Rotor Blade Covering 2-1/2x 60 483 Helicopter Main Rotor Blade Covering 2-1/2x 60 484 Helicopter Main Rotor Blade Covering 3-1/4 x 60 485 Helicopter Main Rotor Blade Covering 3-1/4 x 60 486 Helicopter Main Rotor Blade Covering 3-1/4 x 60 487 Helicopter Main Rotor Blade Covering 3-1/4 x 60 So added complexity doesnt necessarily make prone mechanical failure flier performs thorough preflight inspection October 1987 Safety column ended segment Helicopters asking readers preflight checklist type model would willing send copy Well Paul responded request cluded such checklist letter noted some parts may well apply fixed-wing models well PREFLIGHT CHECKLIST FOR MODEL HELICOPTERS 1 Always remember Murphys Law some thing can go wrong will Therefore never sume because particular part has given trouble past will continue work prop erly future means INSPECT EV ERYTHING 2 Never assume something isnt working correctly will good enough flight Whatever working correctly will certainly fix itself things can go bad worse 3 Get preflight routine stick Build habitual pattern checking everything certain sequence certain way write checklist needed Add checklist find other areas suspect 4 Some things check Helicopter follows Before looking little pieces give overall Helicopter general examination gray fuel residue could indication part coming loose vibrating Starting nose canopy re moved check radio installation secure Continued page 18 16 Model Aviation WITH EASY TO APPLY HELICOPTER BLADE COVERING FIVE SIZES AVAILABLE 7/8 x 9 1-7/16 x 12 2x 48 2-1/2x 60and 3-1/4x 60 468Wht 469BIk 470Red 471Yel 472Wht 473Bik 474Red 475Yel 476Wht 477BIki Red Yel Wht Bik Red Yel Wht Bik Red Yel eI TR260 p New French Aerobatic Design 114 Stnnd-nff Rrnl Kit Scratch ff11 $10300 plus shlpplng $1100 CuwI pants canupy lauding gear plans maw cares tot wing lad surfaces turtle deck & batch ikO~x 1063 Lorain Ohio 44055 e 216 282-8354 PijierCubPEANUTSCALE Piper Vagabond Piper Cub Stinuon 125 Outdoor kits $750 Light Indoor kits $795 OUTDOOR PEANUT Super ... $750 SPORT SCALE PC-6 Porter Taylor Craft Stinson Voyager Rubber CO Power Kits each. $850 SPORT MODELS An Embryo Model 18 Span designed winl beginners experts. $850 HARD-TO-FIND ITEMS Early Bird tiusue Antique Aircraft*596 True OlduJupanane Tiauue lOin 3 cobra*096 JupaneauTiusue 12 inOcolore*396 Microlita Silver$396 Microfilm Glue Solvent Conduutuer Paper 3 abruets*460 Plan Service over 17 Scale Spore Scale ft Peanut Scala Rubber Strip 020 thre 085each $196 3132 thru 5132each *250 Winder61 Mark 161 . *1296 complete urea Brown C0 Motore Balsa Wood Outdoor ft Indoor Sheets ft Strips Add 10% Poatage mum Postage *150 COMPLETE CATALOG *150 m WE ARE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY Satisfaction Guaranteed Direct Only BALSA SHEETS 36 48 30I 1/18233 3/32240 1/8 243 3/16245 14 256 1/32337 1/28337 1/163374931 3/32 3445637 1/8 3547145 3/16 3628258 1/4 3735861 5/16385 3/8 3 88 124 71 1/2 3 110 195 3/4 3 195 1/1645876 48 3/32 47094 56 1/8 4 80 106 66 3/16483 12275 1/44/10 134 64 3/84195 225 1/2 4 225 261 MATCHED SHEETS 42 3324100 1/94108 0164120 1/44131 BALSA STICKS 3648 1/16 1/409 1/16 3/810 1/16 1/214 3/32 1/410 3/32 3/612 3/32 1/216 1/8 1/808 1/8 1/41116 1/6 3/81218 3/8 1/21624 3/16 3/161116 3/16 3/517 3/16 1/32230 1/4 1/41624 1/4 3,81926 1/4 1/22/30 1/4 3/43444 1/4 140 5/165/162128 3/8 3/82737 3/8 1/23246 3/8 3/44255 3/8 192 1/2 /23653 1/2 682 1/2 158 5/5 5/848 3/4 3/467 BALSA HOT LINE Call 806 74S-6394 10 am -6pm Ceutral Time LONE STAR MODELS 123 57th St Lubbock TX 79412 IA * CC LSA TRIANGLES3636 1/41/4 2549 3/6 3/8 3049 1/21/2 3549 3/43/4 4856 1 1 5567 76 BALSA PLANKS3688 11 65115 1215039 13200220 14280300 11/2327578 11/2436081 22225100 233251/7 24435138 33495207 34659282 TAPERED SHEETS36 1/42 65TRAILING EDGE36 14385 14132 3/8259 516 / 1439 3/8398 381 246 1/23120 12270 LONE STAR EPOXY 9,L,t--895 5,598 15,598 30 r,r588 INSTANT6LUE / k298 / o Thi238 2, Thick950 2c 1/,550 CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% a serious modeler want performance must try 4-6 lb balsa LIGHT 4-6 LB WOOD 1/323 1/203 1/163 3/323 1/83 3/163 1/4 3 3/8 3 123 34 3 13 1/164 332 84 3164 144 384 1 2 SSWOOD 3/16 3/1 6 3/16 1/4 3/183/8 3/161/2 3/16 3/4 1/4 1/4 1/43/8 1/43/4 3/83/8 3/81/2 3/83/4 1/2 1/2 1/23/4 48 26 30 35 46 60 42 48 80 60 70 80 80 100 BUNDLE DEALS 201/6336685 20-1/164361020 203/32336845 153/32438955 1518336715 101/6436675 15316335900 103/16436810 101/4336630 101/4436800 103/8336890 53/8436628 5-1/2336940 51/2436855 103/32445845 51/8448485 53/16448585 51/4448625 PINE STICKS 36 48 1/8 18 18 14 1/83/8 316 316 316 3/8 3/1612 1/4 14 1/43/8 14 1 2 3838 1317 1623 2027 1724 2332 3040 2637 3042 3447 3752 5/16 SPRUCE STICKS 36 48 38 18 1815 16 141624 1/6 3/82029 3/1631834 14 143149 14 3/83659 3/8 3/84963 / 3/8 125570 1/2 1/26080 12 345988 SPRUCE TRIANGLES 3/83/8 1/2 1/2 34 3/4 36 45 01 77 48 150 300 HARD MAPLE 1/4 3/83/8 3/81/2 3/8 3/4 1/2 3/4 18 40 49 50 58 68 BIRCH DO WELS36 /809 31611 1414 25 32 3PLYBIRCH48 1/5412525 1/3212425 1/1612435 1/612450 SPLSBIRCH48 33212570 1612585 31612585 1412600 GROOVED LII MOUNTS 12 IncheS 3/83/4/18/40 3/83/4/532/40 1/23/4/3/16/45 LITEPL V 1/86 1/8 12 Handling Charge$300 pay UPS Add $200 COD $300 extra PP APO FPO WeaccplVia Maw Cad pe900a/ chocks COD 41/8% 14 ,Txa US xx,ercyoIy Mn,imOrde $1000 — ~ u.j 11 LI k [0] I] ires place properly tied down etc Fuel tank fittings tubing good condition Pushrods servos secure servo arms respective belicranks etc Check worn ball links loose balls Engine muffler mounted securely Clutch starter shaft main drive gear tail rotor drive gear move freely mesh prop erly Swashplate head secure no loose nuts bolts etc Lightly oil head bearings needed Check landing gear tail boom braces secure Check tightness tail rotor drive setscrews use too much force try over tighten setscrews will become rounded Check tail rotor blades blade holders bellcrank etc wear damage Again oil lightly needed Check horizontal vertical fin Turn tail rotor gently hand feel rough spots binding gears etc Turn main rotor direction again check rough spots binding etc Turn radio equipment check both radio control movement slop-free smooth operation other Helicopter modelers wish com ment add above items Pauls check list Id interested hearing Wind November 1987 Safety column reprinted part article seen model club newsletter explained per form certain aerobatic maneuvers obtain maxi Continued page 20 TRIM KNIFE Tr m Knife oesigneo precisely eage trim excess cover ng material model Can oe used outside eages straght csrveo Blade can set 1/16 101/4 wth simple adj ustment screw Trim Knife mill make p81001 Overlap ouo seams Works coverig materals 6 0/0000 Trm Knfe Set ino/udes 6 b/odes $900 Trm Kn 8 Blades 5 per pace $300 B No Notches Straight Cuts Heavy oury extra sharp solos oboe Same size regular blades burrp 0000 flex cun/ng strip ping thcker materials Great big birds Big Bird Blades box 100 blades $950 Trial size package 20 blades $250 18 Model Aviation IORE POWEii WITH LESS NOISE Want plane take off climb like homesick angel Make engine before American engineering best Less 90 ElBA 9 feet make bellewersll 1 Quieter glow 2 More mellow sounding four-cycle 3 More usable power both 4 Highest power-to-weight ratio 5 The lowest idle ever 6 Increase mileage up 4 times 7 Runs cooler glow 8 No glowplugs fail 9 Increased reliability 10 Fuel available concentrate Conversion kits available 049 30 cid Schnuerle ported engines Its sim ple just change heads fuel What waiting Dust off twocycle DIESELIZE Send self-addressed 37 stamped en velope $100 information call 203-877-1670 between 730 pm and 930 pm EST Mon thru Fri DAVIS DIESEL DEVELOPMENT PO Box 141 Milford CT 06460 The leader quiet combustion technology since 1976 ELECTRIC MOTOR MOUNT JT-EL1 P054 ALL 05-10075 M01RS AU 03505-15 COBALTS 895 JIEL2 25-40 Motors 1395 UGHT WEIGHT CAST ALUMINUM Includes motor hold down strip Screws versatile motor mount prrMdes firm firewall mounting popular elecuic moto1 Mount allows exchangIng motors best flight pedomtanca Motor can mounted through firewall fowaid firewall proper CG balancingorto fir design plane ELECTRIC MOTOR TEST STAND PLANES CaSr testing breaking comparing motors. Large heat sink clamp maxes motor tUfl coo/el Can also Used boat motor mount S avaNabls hobby shop ORDER DIRECT toe Ernadote shxnant Check MO VIact MC COD accepted Add 5O UPS OO COD 0I 20 Model Aviation mum points Pattern contests part reprinted November column concerned Stall Turn included authors statement performed crosswind direc tion turn should always wind rather away wind authors rationale advice model will turn easily wind cause wind pressure tail helps swing plane over asked readers believed authors advice rationale correct About half dozen readers responded agreed Stall Turn performed crosswind turn should wind correct reasoning Without getting vector diagrams other mathematical analyses Stall Turn let try give correct rationale Pattern fliers perform Stall Turns towards wind flying crosswind First let say Im talking about steady-state wind effects wind shear gusts etc part discussion Second pressure force exerted models tail crosswind exists model contact ground cause once model airborne no such thing far model concerned crosswind Before anyone puts pen paper disagree statement let say such terms upwind downwind crosswind refer air mass wind moving relative earth ground observer standing Once airplane takes off wind experiences due its own motion through air flies other words wind always dead nose ex ception occurs during sideslip Continued page 22 Authorized Warranty ServiceFREQUENCY CONVERSION $1000 Discount Regular Repair Moat Makes Models Convefled Tuning Donewith Spectrum Analyzer K- LINE Also Service ME E/ iiI trShadL Only Full Time Servicenter Midwest 117 East Main St Northvil le Michigan 48167 [Upper Lewli /~/ 1 -313-348-0085 9m Carry Largest Only Stock m Kratt Parts World raft N alIve working KRAFT MIDWEST ILL LI HIIATI FIX Jl/octzL tyLccRECORD BREAKER 1961 BROOKLYN DODGER 56 Cabin EWEST0 Retail 512 950*INTRODUCTORY PRICE0 $3900 1938 Record Breaker 96 $6956 1939 Zipper 59$5356 1938 Kloud King 63 $62 36 19111 Brigidier 56 $4676 1941 Super Quaker 78 $7276 1940 So Long 50$3036 1936 Buccaneer 84 $5996 1938 Clipper MKI 7y59156 1937 Dallaire 108 $75 16 1935 Miss America 84 $7196 1991 Playboy Sr 80 $5116 1991 Playboy Jr 54S3116 1938 Powerhouse 89 $53 56 1990 Sailplane 78 $8976 1938 Trenton Terror 72 $6076 1940 Ranger 4653198 1939 Korda Wake 44 $1916 l939Mercur 72 $1036 kits qualify SAM events PP & R/C feature highest quality machine Cut & sanded parts Superior Competition oheet strip wood wire & window material Plans orig EF models easil convertible 3ch RIC KITS Sailplanes Electric power Gas Hobby Horn SENSOAR Glider 78 $1801 Midway Model GNOME R/G Hand Launch Glider$2408 Jolly Models FLINGER R/C HLG 58 Span $2400 Midway Model FAST EDDIE Aerobatic /01 Elec$1908 Jolly Models ELECTRICUS Electric Glider 05s$3256 Leisure PLAYBOY SR 67 Gear 01 Elect $3080 Astro ASTRO SPORT 37 Direct 85 Elect $2218 CA Addressees add 6% tax 15173 Moran St A] Send MO Visa/MC#Exp PO Box 2212 Check allow up 38 Westminster Ca 92684 days CK clearance] 714 8938311 COD Exact Charges plus $110 Hdl Cash Only Aft Hrs 719 8951283] applying rudder opposhe aileron neces sary pilot deliberately forces airplane drift some angle through air flying still lets turn competi tion aerobatics model full-scale judges seated ground score high marks maneuvers must look good rel ative ground Lets assume crosswind exactly 900 flight line blowing toward flight line other words judges feel wind blowing directly faces such situation airplane judging perform what appears to vertical climb its axis will ver tical will angled wind Similarly after turn portion maneu ver accomplished airplane must descend direction appears vertical judges Again accomplish models axis must once angled wind So because during both ascent descent aircraft its axis vertical respect ground angled toward direction apparent wind does have rotate full 1800 during actual turn portion maneuver turn direction wind turn attempted away wind axis airplane must rotate through angle greater 1800 will take longer will seem observer ground have greater turn radius As result latter vis ual phenomenon may seem airplane performed Wingover rather Stall Turn since readily recognizable difference maneuvers radius turn case wondering article aerobatics included column concerning safety consider following excerpt letContinued page 129 Weve known put out great cataloglIterally best business Because take AC seriously years catalog no exception Packed over 200 pages full color action photographs 1988 Catalog next best thing favorite AC dealer contains everything Robbe makesboats cars planes gliders accessories beginners barestormers over 450 products 1988 Catalog can bring right home Youll find Robbes 1988 Catalog AC dealer now use coupon send yours today Just $&O0 Plus youW receive $400 certificate good towards next Robbe purchase { rolibe ......... PUU mmr.aauw. Evauehamv0muav0eg omma owm U U AOAa.o CitylStatetZlp Mall Robb Modalapart 1UTmndlp Urn ed Bells Mmmd NJ OWA U Cenlflcate eoq*s 21291U Good pwdoamof *1 andoerdkect*omRobh UVELANDS GREAT PLANS Historically PronOdl 87 Con JN4 iRney $37 80K MoqoRs Rb $42. 84 Fskkoo D7 FIr $39 188 OH MaqaBswb $55 70 Boyle Ooe0o 533 98 Steer FTl7Koyd $36 68 Howard P $32 99 NOll Widsw P61 $69 68 Soprworine 560 $24 71 Osag DC3 tC47 830 891 porearie 560 $33 93 bag DC3 1C47 553 63 C rt Howl P6E $42 86 Howl, Teooss 13 532 94 C rt Howk P6E $54 64 Staat SkyCor $18 74 DsslieloGB 11 $48.72Csr0281/4 LIS $46 93 Ma osoope Spmi $36 iot car 8201/4 t&l $36r * 00 Ha Ipo Rolidag $43 68 Doagla M2 Mall $24 07 AmonRo C3 Spt 83368 Rritol Ralldog hr 930 63 Hsword RooR lb $43 39 BrosRose MtA $04 78 nor WW Ras 933 107 Oraw Rearsl F8F $54 63 C Gsbl P1 1C $43 69 tiedkra Nlt21 $28 94 Car Csbk Fl 1C $547 91 tindbora NO211 $39 66 OsHon Comet Roo $24 96 WrNWlNov ges $48 63 Hosn96rMalligon $35 74 C 6114, SB2C4 $33 94 HswMrMalligon $45 188 FairokPT19 r $59 63 Boeing P26A Pt 536 6OWses ToperAVlng $36 84 Booing P36A FIr $48 eOWaso ToperVing $48 106W500 C6 Cobin $55,73 Welld tysond $32 i 64 Boos C 170 Stoa 938 108 Westld tyos4r $49 96 Rood C170 Slog $49 57 Ford Triart 4AT $36 tool 11 Eloatro $30 76 Ford Triet 4AT 848 82 tool 11 OlecIro $40 114 Ford Triwlr 4AT $60 62 Stlneen 7/W 007 $10 96 RelIance Alrro~ 848 81 Stnsn 7/W 107 $26 93 Looolaa C2Aepb $69 133 Stnan 7/W 007838-SB Oraw J2F Dal $39 59 Bratol hr P20 $20 78 Orem J3F bask $56 118 BrisIsi FIr P200 $43 124 took Air topre, 74 Tore. Pesos $45 63 tool Air Eopro, $24 36 Ca Warhl P40 $24 83 Is, Air topren $36 60 Vo8t Canal P40 $35 77 WWe 121 RaIL $48 80 Vol Corssir P40 $69 63 C Soohowb P7C1 840 78 Look tgbtn8 P38 $38 94 C Soaks. P7C1 $57 36 Rp Soo0o Am $24 108 Silsr 138 Ampk $49 74 Rop SesBoe Aw $39 60 Oboing 100 Iport 836 70 Fper 32 Cab $39 90 Osoing 198 Sport $49 106 PIpar 33 Cob $3972 Nsrtbrop Ooweo $48 98 took Hadan Owl $30 96 Nartbrsp Gomaro $73 63 Graw POF Hllcot $28 90 StieA tsar 3/M $56 77 Booing 0170 Psrt$25 60 StinA tsw 3/M $42 103 Ba. B170 Port 555 120 lOnsA 3/M $82 68 WeetI W1irlwlnd $32 78 ConslCotPBY5A $42 68 N Anoo Navisn $39 104 ConColPRYSA $36 68 BBooooeo YToil $39 63 MCbtoo Clipper 065 77 laoowle Sdsn $25 97 MChlna Clip nr $70 72 NA 8-25 Rowbor 849 Corli, NC4 $59 3 MMoroader 826 $49 94 Corti, NC4 $69 areeenOosnIcaeoo ga*ETEE Silk OIosnruas Daerl401 OSa Ue 6122 Pos Aiway lnl Add 10% oil order tiyya & in. tIR. USA Coo & Mon EIeoohe 15% 173% iR Syoirl Pictoiol ooroloa $Z$$ Unclad Plse 1111 Pri 111 DOIIOO olon 5100 II oi, tocelan odd 8100 CLEVELAND MODEL&SUPPLYCo oortOooeceoeao 183070 BOTROIT AVE CLEVELAND OHIO 44102 wcacew Rasle Phoot Ia 3 IS PMF ST lOr 0 ST 112101 9612000 22 Model Aviation Safety/Preston Continued page 22 ter received Stasi Poulos Dallas TX recently helping newcomer RC fly ing soloed become quite confident ability lost almost fear about flying wind day watched him take off 15 mph steady headwind ascent beautiful could until turned downwind made decision throttle back since plane seemed pick up much speed downwind leg plane banked slightly tried correct bank ailerons horror hollered ailerons werent work ing Yet still throttle elevator control Convinced victim chanical radio failure handed threw transmitter regained control landed tried explain him what happened plane turned downwind its air speed did change its speed over ground did student felt plane passing him too fast solution throt tIe back failed realize did re duce speed plane passed him no real indication planes airspeed reduced airspeed until plane stalled Ailerons change lift aircrafts wings no lift can swing want youll never know difference student said No way plane wasnt moving slow What really saw however stalled plane moving air mass Stasis description incident makes wonder radios have sent off correction failures really didnt occur opinion appreciation visual effect wind models flight characteristics has direct bearing safely fly Have safe month watch out downwind turns Schweizer/Moskal Continued page 36 forward canopy molded piece plastic clamped frame heated oven drawn over wooden plug method has described times other articlesone best being Steve Gray March 1987 issue Model Builder would rather make canopy available ready-made Shabo Scale 2416 North 66th Wauwatosa WI 52213 Plan canopy hold-downsrubberbands mini ature hooks simplest lightest Route pair inner Nyrods PL PR spoiler servo glue Install airborne gear check ac tions correcting binding rubbjng Complete turtledeck structure add crossgrain floor Xe-in balsa E U Glue both halves F3 four A-in balsa lower main stringer standoffs Laminate lower main stringer two pieces A-in-sq spruce Glue stand off formers /6-in floor fuse lage glue stringer running keel G Glue 1/16 angular balsa gussets brace standoffs floor Add piece Y32-sq spruce doubling top longeron Tl tapering aft F Complete two lower stringers running C2 F3 aft F3 keel Form skid two pieces 1A x /2-in spruce laminating form made common nails board Drill skid screw attach points re move cover glass cloth paint match scheme Some 1-26 aircraft fabric fairing cover gap between skid fuselage quite often no fair ing used tail nose cone built up balsa Shape tail cone A-in core Lite Ply hold shape ply core doubled A-in balsa carved correct taper Tack-glue fuselage check maximum travel elevator horn will later glued after painting covering carefully drilled center nose cone after shaping soft balsa %2-in ply disc matches former 4-40 hex head bolt eased piece -in brass tube used bushing created N shape 3A2-in ply would slip behind drilled 4-40 blind mounting nut holds nose cone place bolt tight ened access hole 4-40 bolt serves scale air vent common 1-26 nose cones battery pack way also has advantage being acces sible acts balancing weight STICKY BUSINESS NOW AVAILABLE ON VHS VIDEO ADHESIVEUU Frank Tiano Producer Bob Violett nician ira KEEP YOU OWED TO YOUR SEAT Contains everything want know about Zap Loctite adhesive product informative Humorous 2 hours two intermissions ideal club meetings Produced Frank Tiano Techniques Frank Tiano Bob Viotett NOW AVAILABLE FOR SHOWING $3495 Plus $2 Shipping & Handling Name CityState __________ Zip Send $3695 $3495 plus $2 shipping & handling check money order Frank Tiano Enterprises 2460 SW 85 Terrace Davie FL 33324 Allow 4-6 weeks delivery Sorry cannot deliver post office boxes MA February 1988 129 WORLD CLASS tA Retr *6 Tony Frackowiaks Challenge IV Kit Atlanta KitDash Kit Hattori Headers Pipes AMA&FAIRC Aerobatic Specialties PO Box 388914-248-8603 Lincoindale NY 10540 Send $100 catalog FIBERGLASS PARTS Over 237 cowls kit scratch built models Also over 34 round cowls ranging 4 14-718 diameter 55 duff size & shape wheel pants custom Make Parts Vacuum Form Canopies Pining send $1 unqist kt TAD FIBERILASS SPECIALTIES 30925 nlock Dept 4 Garden city Ml 48135 PHONE 313421-6358 BRAZED & HEAI-TREAIED WIRE GEARS & CABANES PHONE 313 261-9064
Edition: Model Aviation - 1988/02
Page Numbers: 14, 16, 18, 20, 22, 129
John Preston 7afety Comes First Northampton St NW Washington DC 20015 Sharing airspace full-scale planes Use caution Helicopter preflight checklist Learn wind affects RC planes flight path safety FATAL ATTRACTION Back September 1980 issue Model Aviation columnist men tioned incident occurred West Coast involved collision between RC Sailplane hang glider Fortunately hang glider pilot suffered no serious injuries comment incident Simultaneous op eration RC Sailplanes hang gliders es sentially same site appears hazardous pursuit editorial Switch October 1987 issue British model magazine Radio Control Models & Electronics RCM&E re cently came attention devoted al entirely discussion another collision between Slope Soarer hang glider case hang glider pilot suffered fatal injur ies Devils Dyke Sussex England may long way Pacific Coast US However no matter fly share airspace other aircraft whether full-scale models ever present risk collision cir cumstances surrounding two incidents took place some seven years apart suf ficiently similar believe short dis cussion Devils Dyke incident described RCM&E necessary caution readers may fly RC Sailplanes slope shared hang gliders Apparently previous problems concerning cooperation between model hang glider pilots Devils Dyke However worked out some type agreement such hang gliders would confine activi ties area left public house pub RCers used area right day accident May 10 1987 model flier launched Salto Sailplane late afternoon flying about 10 15 min utes observed some hang gliders drifted airspace normally confined model-flying activities Recognizing poten tially dangerous situation developing modeler elected land Sailplane promptly However during downwind leg ap proach hang glider suddenly appeared field vision despite attempted evasive actlon collision occurred starboard wing hang glider promptly failed followed shortly similar fail ure port wing estimated altitude about 80 ft hang glider pilot insuffi cient time deploy parachute wearing sustained fatal injuries upon impact ground midair collision point close wing root Sailplane struck severed 3mm-diameter flying wire starboard wing hang glider later found fly ing wire hang gliders wing cut balsa leading edge models wing contacted aileron control brassand-steel wing joiner model models weight approximately four pounds together estimated closing speed 45-60 mph generated force hang gliders wing fly ing wire unable withstand inquest death hang glider pilot verdict death misadventure other words deceased assumed element risk undertaking no charges filed against pilot model Sailplane As anyone has involved modelto-model midair collision will recall concen tration flying own model such second model appears field vi sion generally too late take action avoid collision recommendation may fly slope potential shared airspace have observer present times sole job alert model pilots encroachment full-scale aircraft addition Slope Soaring club activity slope shared hang gliding club costs work out some form amicable agreement between two clubs such minimize eliminate pos sibility midair collision between aircraft two activities Helicopter safety October 1987 issue Model Aviation Safety column carried arti cle sent reader stated Because high degree complexity greater num ber moving parts probable Hel icopters prone mechanical failure fixed-wing models recent letter Lt Col Paul Tradelius took issue statement Pauls letter ex pressed following believe have done injustice Helicopters national maga zine because familiar least part Pauls accusation true certainly am familiar model Helicopters Since have neither built nor flown have rely others expert oper ation information safe practices Pauls letter went point out unlike fixed-wing models mechanical parts Helicopters such control linkages etc exposed can therefore checked easily Continued page 16 C -ii WELL IIT OFF UESS YOU AE VERY SNSIT1VE TO GLUE SMELLS odel Aviation K column provided address Items concern regarding safety aspects model aviation activities Content column however opinion author does necessarily represent official position Academy Model Aeronautics AVAILABLE IN 4-COLORS. Red Yellow White Black Helicopter Tail Rotor Blade Covering 7/8 x 9 Helicopter Tail Rotor Blade Covering 7/8 x 9 Helicopter Tail Rotor Blade Covering 7/8 x 9 Helicopter Tail Rotor Blade Covering 7/8 x 9 Helicopter Tail Rotor Blade Covering 1-7/16x 12 Helicopter Tail Rotor Blade Covering 1-7/16 x 1 2 Helicopter Tail Rotor Blade Covering 1-7/16x 12 Helicopter Tail Rotor Blade Covering 1-7/16x 12 Helicopter Main Rotor Blade Covering 2 x 48 Heiicopter Main Rotor Blade Coverina 2 x 48 DELUXE Nit $28500 plus shipping $1100 Everything full kit wing spars installed wiugn stab turttu deck butch & fin pie-shinned 1116 balsa MAKES BUILOtNG GUICKI Span85 Length66 Wing area 1213 sq Weight . 165 lbs Power035-040 G38-G62 FM JOt $21500 plus sllIppin $1100 Eveuytldeg scratch kit plus i weed pails complete mdd A11 wood & foam construction Flberglas cowl & pants 2-plece plug-in wings Foam core airfoiled tail surfaces No tail brace wires required FOR MORE INFO OR TO PLACE ORDER CONTACT SPIRIT LAKE HOBBIES Ph 712 336-5586 1621 Hill Ave Spirit Lake IA 5136 HEAT SHRINKABLE 4 MILTHICK FILM EASY TO FOLLOW INSTRUCTIONS 478 Helicopter Main Rotor Blade Covering 2 x 48 479 Helicopter Main Rotor Blade Covering 2 x 48 480 Helicopter Main Rotor Blade Covering 2-1/2x 60 481 Helicopter Main Rotor Blade Covering 2-1/2x 60 482 Helicopter Main Rotor Blade Covering 2-1/2x 60 483 Helicopter Main Rotor Blade Covering 2-1/2x 60 484 Helicopter Main Rotor Blade Covering 3-1/4 x 60 485 Helicopter Main Rotor Blade Covering 3-1/4 x 60 486 Helicopter Main Rotor Blade Covering 3-1/4 x 60 487 Helicopter Main Rotor Blade Covering 3-1/4 x 60 So added complexity doesnt necessarily make prone mechanical failure flier performs thorough preflight inspection October 1987 Safety column ended segment Helicopters asking readers preflight checklist type model would willing send copy Well Paul responded request cluded such checklist letter noted some parts may well apply fixed-wing models well PREFLIGHT CHECKLIST FOR MODEL HELICOPTERS 1 Always remember Murphys Law some thing can go wrong will Therefore never sume because particular part has given trouble past will continue work prop erly future means INSPECT EV ERYTHING 2 Never assume something isnt working correctly will good enough flight Whatever working correctly will certainly fix itself things can go bad worse 3 Get preflight routine stick Build habitual pattern checking everything certain sequence certain way write checklist needed Add checklist find other areas suspect 4 Some things check Helicopter follows Before looking little pieces give overall Helicopter general examination gray fuel residue could indication part coming loose vibrating Starting nose canopy re moved check radio installation secure Continued page 18 16 Model Aviation WITH EASY TO APPLY HELICOPTER BLADE COVERING FIVE SIZES AVAILABLE 7/8 x 9 1-7/16 x 12 2x 48 2-1/2x 60and 3-1/4x 60 468Wht 469BIk 470Red 471Yel 472Wht 473Bik 474Red 475Yel 476Wht 477BIki Red Yel Wht Bik Red Yel Wht Bik Red Yel eI TR260 p New French Aerobatic Design 114 Stnnd-nff Rrnl Kit Scratch ff11 $10300 plus shlpplng $1100 CuwI pants canupy lauding gear plans maw cares tot wing lad surfaces turtle deck & batch ikO~x 1063 Lorain Ohio 44055 e 216 282-8354 PijierCubPEANUTSCALE Piper Vagabond Piper Cub Stinuon 125 Outdoor kits $750 Light Indoor kits $795 OUTDOOR PEANUT Super ... $750 SPORT SCALE PC-6 Porter Taylor Craft Stinson Voyager Rubber CO Power Kits each. $850 SPORT MODELS An Embryo Model 18 Span designed winl beginners experts. $850 HARD-TO-FIND ITEMS Early Bird tiusue Antique Aircraft*596 True OlduJupanane Tiauue lOin 3 cobra*096 JupaneauTiusue 12 inOcolore*396 Microlita Silver$396 Microfilm Glue Solvent Conduutuer Paper 3 abruets*460 Plan Service over 17 Scale Spore Scale ft Peanut Scala Rubber Strip 020 thre 085each $196 3132 thru 5132each *250 Winder61 Mark 161 . *1296 complete urea Brown C0 Motore Balsa Wood Outdoor ft Indoor Sheets ft Strips Add 10% Poatage mum Postage *150 COMPLETE CATALOG *150 m WE ARE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY Satisfaction Guaranteed Direct Only BALSA SHEETS 36 48 30I 1/18233 3/32240 1/8 243 3/16245 14 256 1/32337 1/28337 1/163374931 3/32 3445637 1/8 3547145 3/16 3628258 1/4 3735861 5/16385 3/8 3 88 124 71 1/2 3 110 195 3/4 3 195 1/1645876 48 3/32 47094 56 1/8 4 80 106 66 3/16483 12275 1/44/10 134 64 3/84195 225 1/2 4 225 261 MATCHED SHEETS 42 3324100 1/94108 0164120 1/44131 BALSA STICKS 3648 1/16 1/409 1/16 3/810 1/16 1/214 3/32 1/410 3/32 3/612 3/32 1/216 1/8 1/808 1/8 1/41116 1/6 3/81218 3/8 1/21624 3/16 3/161116 3/16 3/517 3/16 1/32230 1/4 1/41624 1/4 3,81926 1/4 1/22/30 1/4 3/43444 1/4 140 5/165/162128 3/8 3/82737 3/8 1/23246 3/8 3/44255 3/8 192 1/2 /23653 1/2 682 1/2 158 5/5 5/848 3/4 3/467 BALSA HOT LINE Call 806 74S-6394 10 am -6pm Ceutral Time LONE STAR MODELS 123 57th St Lubbock TX 79412 IA * CC LSA TRIANGLES3636 1/41/4 2549 3/6 3/8 3049 1/21/2 3549 3/43/4 4856 1 1 5567 76 BALSA PLANKS3688 11 65115 1215039 13200220 14280300 11/2327578 11/2436081 22225100 233251/7 24435138 33495207 34659282 TAPERED SHEETS36 1/42 65TRAILING EDGE36 14385 14132 3/8259 516 / 1439 3/8398 381 246 1/23120 12270 LONE STAR EPOXY 9,L,t--895 5,598 15,598 30 r,r588 INSTANT6LUE / k298 / o Thi238 2, Thick950 2c 1/,550 CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% a serious modeler want performance must try 4-6 lb balsa LIGHT 4-6 LB WOOD 1/323 1/203 1/163 3/323 1/83 3/163 1/4 3 3/8 3 123 34 3 13 1/164 332 84 3164 144 384 1 2 SSWOOD 3/16 3/1 6 3/16 1/4 3/183/8 3/161/2 3/16 3/4 1/4 1/4 1/43/8 1/43/4 3/83/8 3/81/2 3/83/4 1/2 1/2 1/23/4 48 26 30 35 46 60 42 48 80 60 70 80 80 100 BUNDLE DEALS 201/6336685 20-1/164361020 203/32336845 153/32438955 1518336715 101/6436675 15316335900 103/16436810 101/4336630 101/4436800 103/8336890 53/8436628 5-1/2336940 51/2436855 103/32445845 51/8448485 53/16448585 51/4448625 PINE STICKS 36 48 1/8 18 18 14 1/83/8 316 316 316 3/8 3/1612 1/4 14 1/43/8 14 1 2 3838 1317 1623 2027 1724 2332 3040 2637 3042 3447 3752 5/16 SPRUCE STICKS 36 48 38 18 1815 16 141624 1/6 3/82029 3/1631834 14 143149 14 3/83659 3/8 3/84963 / 3/8 125570 1/2 1/26080 12 345988 SPRUCE TRIANGLES 3/83/8 1/2 1/2 34 3/4 36 45 01 77 48 150 300 HARD MAPLE 1/4 3/83/8 3/81/2 3/8 3/4 1/2 3/4 18 40 49 50 58 68 BIRCH DO WELS36 /809 31611 1414 25 32 3PLYBIRCH48 1/5412525 1/3212425 1/1612435 1/612450 SPLSBIRCH48 33212570 1612585 31612585 1412600 GROOVED LII MOUNTS 12 IncheS 3/83/4/18/40 3/83/4/532/40 1/23/4/3/16/45 LITEPL V 1/86 1/8 12 Handling Charge$300 pay UPS Add $200 COD $300 extra PP APO FPO WeaccplVia Maw Cad pe900a/ chocks COD 41/8% 14 ,Txa US xx,ercyoIy Mn,imOrde $1000 — ~ u.j 11 LI k [0] I] ires place properly tied down etc Fuel tank fittings tubing good condition Pushrods servos secure servo arms respective belicranks etc Check worn ball links loose balls Engine muffler mounted securely Clutch starter shaft main drive gear tail rotor drive gear move freely mesh prop erly Swashplate head secure no loose nuts bolts etc Lightly oil head bearings needed Check landing gear tail boom braces secure Check tightness tail rotor drive setscrews use too much force try over tighten setscrews will become rounded Check tail rotor blades blade holders bellcrank etc wear damage Again oil lightly needed Check horizontal vertical fin Turn tail rotor gently hand feel rough spots binding gears etc Turn main rotor direction again check rough spots binding etc Turn radio equipment check both radio control movement slop-free smooth operation other Helicopter modelers wish com ment add above items Pauls check list Id interested hearing Wind November 1987 Safety column reprinted part article seen model club newsletter explained per form certain aerobatic maneuvers obtain maxi Continued page 20 TRIM KNIFE Tr m Knife oesigneo precisely eage trim excess cover ng material model Can oe used outside eages straght csrveo Blade can set 1/16 101/4 wth simple adj ustment screw Trim Knife mill make p81001 Overlap ouo seams Works coverig materals 6 0/0000 Trm Knfe Set ino/udes 6 b/odes $900 Trm Kn 8 Blades 5 per pace $300 B No Notches Straight Cuts Heavy oury extra sharp solos oboe Same size regular blades burrp 0000 flex cun/ng strip ping thcker materials Great big birds Big Bird Blades box 100 blades $950 Trial size package 20 blades $250 18 Model Aviation IORE POWEii WITH LESS NOISE Want plane take off climb like homesick angel Make engine before American engineering best Less 90 ElBA 9 feet make bellewersll 1 Quieter glow 2 More mellow sounding four-cycle 3 More usable power both 4 Highest power-to-weight ratio 5 The lowest idle ever 6 Increase mileage up 4 times 7 Runs cooler glow 8 No glowplugs fail 9 Increased reliability 10 Fuel available concentrate Conversion kits available 049 30 cid Schnuerle ported engines Its sim ple just change heads fuel What waiting Dust off twocycle DIESELIZE Send self-addressed 37 stamped en velope $100 information call 203-877-1670 between 730 pm and 930 pm EST Mon thru Fri DAVIS DIESEL DEVELOPMENT PO Box 141 Milford CT 06460 The leader quiet combustion technology since 1976 ELECTRIC MOTOR MOUNT JT-EL1 P054 ALL 05-10075 M01RS AU 03505-15 COBALTS 895 JIEL2 25-40 Motors 1395 UGHT WEIGHT CAST ALUMINUM Includes motor hold down strip Screws versatile motor mount prrMdes firm firewall mounting popular elecuic moto1 Mount allows exchangIng motors best flight pedomtanca Motor can mounted through firewall fowaid firewall proper CG balancingorto fir design plane ELECTRIC MOTOR TEST STAND PLANES CaSr testing breaking comparing motors. Large heat sink clamp maxes motor tUfl coo/el Can also Used boat motor mount S avaNabls hobby shop ORDER DIRECT toe Ernadote shxnant Check MO VIact MC COD accepted Add 5O UPS OO COD 0I 20 Model Aviation mum points Pattern contests part reprinted November column concerned Stall Turn included authors statement performed crosswind direc tion turn should always wind rather away wind authors rationale advice model will turn easily wind cause wind pressure tail helps swing plane over asked readers believed authors advice rationale correct About half dozen readers responded agreed Stall Turn performed crosswind turn should wind correct reasoning Without getting vector diagrams other mathematical analyses Stall Turn let try give correct rationale Pattern fliers perform Stall Turns towards wind flying crosswind First let say Im talking about steady-state wind effects wind shear gusts etc part discussion Second pressure force exerted models tail crosswind exists model contact ground cause once model airborne no such thing far model concerned crosswind Before anyone puts pen paper disagree statement let say such terms upwind downwind crosswind refer air mass wind moving relative earth ground observer standing Once airplane takes off wind experiences due its own motion through air flies other words wind always dead nose ex ception occurs during sideslip Continued page 22 Authorized Warranty ServiceFREQUENCY CONVERSION $1000 Discount Regular Repair Moat Makes Models Convefled Tuning Donewith Spectrum Analyzer K- LINE Also Service ME E/ iiI trShadL Only Full Time Servicenter Midwest 117 East Main St Northvil le Michigan 48167 [Upper Lewli /~/ 1 -313-348-0085 9m Carry Largest Only Stock m Kratt Parts World raft N alIve working KRAFT MIDWEST ILL LI HIIATI FIX Jl/octzL tyLccRECORD BREAKER 1961 BROOKLYN DODGER 56 Cabin EWEST0 Retail 512 950*INTRODUCTORY PRICE0 $3900 1938 Record Breaker 96 $6956 1939 Zipper 59$5356 1938 Kloud King 63 $62 36 19111 Brigidier 56 $4676 1941 Super Quaker 78 $7276 1940 So Long 50$3036 1936 Buccaneer 84 $5996 1938 Clipper MKI 7y59156 1937 Dallaire 108 $75 16 1935 Miss America 84 $7196 1991 Playboy Sr 80 $5116 1991 Playboy Jr 54S3116 1938 Powerhouse 89 $53 56 1990 Sailplane 78 $8976 1938 Trenton Terror 72 $6076 1940 Ranger 4653198 1939 Korda Wake 44 $1916 l939Mercur 72 $1036 kits qualify SAM events PP & R/C feature highest quality machine Cut & sanded parts Superior Competition oheet strip wood wire & window material Plans orig EF models easil convertible 3ch RIC KITS Sailplanes Electric power Gas Hobby Horn SENSOAR Glider 78 $1801 Midway Model GNOME R/G Hand Launch Glider$2408 Jolly Models FLINGER R/C HLG 58 Span $2400 Midway Model FAST EDDIE Aerobatic /01 Elec$1908 Jolly Models ELECTRICUS Electric Glider 05s$3256 Leisure PLAYBOY SR 67 Gear 01 Elect $3080 Astro ASTRO SPORT 37 Direct 85 Elect $2218 CA Addressees add 6% tax 15173 Moran St A] Send MO Visa/MC#Exp PO Box 2212 Check allow up 38 Westminster Ca 92684 days CK clearance] 714 8938311 COD Exact Charges plus $110 Hdl Cash Only Aft Hrs 719 8951283] applying rudder opposhe aileron neces sary pilot deliberately forces airplane drift some angle through air flying still lets turn competi tion aerobatics model full-scale judges seated ground score high marks maneuvers must look good rel ative ground Lets assume crosswind exactly 900 flight line blowing toward flight line other words judges feel wind blowing directly faces such situation airplane judging perform what appears to vertical climb its axis will ver tical will angled wind Similarly after turn portion maneu ver accomplished airplane must descend direction appears vertical judges Again accomplish models axis must once angled wind So because during both ascent descent aircraft its axis vertical respect ground angled toward direction apparent wind does have rotate full 1800 during actual turn portion maneuver turn direction wind turn attempted away wind axis airplane must rotate through angle greater 1800 will take longer will seem observer ground have greater turn radius As result latter vis ual phenomenon may seem airplane performed Wingover rather Stall Turn since readily recognizable difference maneuvers radius turn case wondering article aerobatics included column concerning safety consider following excerpt letContinued page 129 Weve known put out great cataloglIterally best business Because take AC seriously years catalog no exception Packed over 200 pages full color action photographs 1988 Catalog next best thing favorite AC dealer contains everything Robbe makesboats cars planes gliders accessories beginners barestormers over 450 products 1988 Catalog can bring right home Youll find Robbes 1988 Catalog AC dealer now use coupon send yours today Just $&O0 Plus youW receive $400 certificate good towards next Robbe purchase { rolibe ......... PUU mmr.aauw. Evauehamv0muav0eg omma owm U U AOAa.o CitylStatetZlp Mall Robb Modalapart 1UTmndlp Urn ed Bells Mmmd NJ OWA U Cenlflcate eoq*s 21291U Good pwdoamof *1 andoerdkect*omRobh UVELANDS GREAT PLANS Historically PronOdl 87 Con JN4 iRney $37 80K MoqoRs Rb $42. 84 Fskkoo D7 FIr $39 188 OH MaqaBswb $55 70 Boyle Ooe0o 533 98 Steer FTl7Koyd $36 68 Howard P $32 99 NOll Widsw P61 $69 68 Soprworine 560 $24 71 Osag DC3 tC47 830 891 porearie 560 $33 93 bag DC3 1C47 553 63 C rt Howl P6E $42 86 Howl, Teooss 13 532 94 C rt Howk P6E $54 64 Staat SkyCor $18 74 DsslieloGB 11 $48.72Csr0281/4 LIS $46 93 Ma osoope Spmi $36 iot car 8201/4 t&l $36r * 00 Ha Ipo Rolidag $43 68 Doagla M2 Mall $24 07 AmonRo C3 Spt 83368 Rritol Ralldog hr 930 63 Hsword RooR lb $43 39 BrosRose MtA $04 78 nor WW Ras 933 107 Oraw Rearsl F8F $54 63 C Gsbl P1 1C $43 69 tiedkra Nlt21 $28 94 Car Csbk Fl 1C $547 91 tindbora NO211 $39 66 OsHon Comet Roo $24 96 WrNWlNov ges $48 63 Hosn96rMalligon $35 74 C 6114, SB2C4 $33 94 HswMrMalligon $45 188 FairokPT19 r $59 63 Boeing P26A Pt 536 6OWses ToperAVlng $36 84 Booing P36A FIr $48 eOWaso ToperVing $48 106W500 C6 Cobin $55,73 Welld tysond $32 i 64 Boos C 170 Stoa 938 108 Westld tyos4r $49 96 Rood C170 Slog $49 57 Ford Triart 4AT $36 tool 11 Eloatro $30 76 Ford Triet 4AT 848 82 tool 11 OlecIro $40 114 Ford Triwlr 4AT $60 62 Stlneen 7/W 007 $10 96 RelIance Alrro~ 848 81 Stnsn 7/W 107 $26 93 Looolaa C2Aepb $69 133 Stnan 7/W 007838-SB Oraw J2F Dal $39 59 Bratol hr P20 $20 78 Orem J3F bask $56 118 BrisIsi FIr P200 $43 124 took Air topre, 74 Tore. Pesos $45 63 tool Air Eopro, $24 36 Ca Warhl P40 $24 83 Is, Air topren $36 60 Vo8t Canal P40 $35 77 WWe 121 RaIL $48 80 Vol Corssir P40 $69 63 C Soohowb P7C1 840 78 Look tgbtn8 P38 $38 94 C Soaks. P7C1 $57 36 Rp Soo0o Am $24 108 Silsr 138 Ampk $49 74 Rop SesBoe Aw $39 60 Oboing 100 Iport 836 70 Fper 32 Cab $39 90 Osoing 198 Sport $49 106 PIpar 33 Cob $3972 Nsrtbrop Ooweo $48 98 took Hadan Owl $30 96 Nartbrsp Gomaro $73 63 Graw POF Hllcot $28 90 StieA tsar 3/M $56 77 Booing 0170 Psrt$25 60 StinA tsw 3/M $42 103 Ba. B170 Port 555 120 lOnsA 3/M $82 68 WeetI W1irlwlnd $32 78 ConslCotPBY5A $42 68 N Anoo Navisn $39 104 ConColPRYSA $36 68 BBooooeo YToil $39 63 MCbtoo Clipper 065 77 laoowle Sdsn $25 97 MChlna Clip nr $70 72 NA 8-25 Rowbor 849 Corli, NC4 $59 3 MMoroader 826 $49 94 Corti, NC4 $69 areeenOosnIcaeoo ga*ETEE Silk OIosnruas Daerl401 OSa Ue 6122 Pos Aiway lnl Add 10% oil order tiyya & in. tIR. USA Coo & Mon EIeoohe 15% 173% iR Syoirl Pictoiol ooroloa $Z$$ Unclad Plse 1111 Pri 111 DOIIOO olon 5100 II oi, tocelan odd 8100 CLEVELAND MODEL&SUPPLYCo oortOooeceoeao 183070 BOTROIT AVE CLEVELAND OHIO 44102 wcacew Rasle Phoot Ia 3 IS PMF ST lOr 0 ST 112101 9612000 22 Model Aviation Safety/Preston Continued page 22 ter received Stasi Poulos Dallas TX recently helping newcomer RC fly ing soloed become quite confident ability lost almost fear about flying wind day watched him take off 15 mph steady headwind ascent beautiful could until turned downwind made decision throttle back since plane seemed pick up much speed downwind leg plane banked slightly tried correct bank ailerons horror hollered ailerons werent work ing Yet still throttle elevator control Convinced victim chanical radio failure handed threw transmitter regained control landed tried explain him what happened plane turned downwind its air speed did change its speed over ground did student felt plane passing him too fast solution throt tIe back failed realize did re duce speed plane passed him no real indication planes airspeed reduced airspeed until plane stalled Ailerons change lift aircrafts wings no lift can swing want youll never know difference student said No way plane wasnt moving slow What really saw however stalled plane moving air mass Stasis description incident makes wonder radios have sent off correction failures really didnt occur opinion appreciation visual effect wind models flight characteristics has direct bearing safely fly Have safe month watch out downwind turns Schweizer/Moskal Continued page 36 forward canopy molded piece plastic clamped frame heated oven drawn over wooden plug method has described times other articlesone best being Steve Gray March 1987 issue Model Builder would rather make canopy available ready-made Shabo Scale 2416 North 66th Wauwatosa WI 52213 Plan canopy hold-downsrubberbands mini ature hooks simplest lightest Route pair inner Nyrods PL PR spoiler servo glue Install airborne gear check ac tions correcting binding rubbjng Complete turtledeck structure add crossgrain floor Xe-in balsa E U Glue both halves F3 four A-in balsa lower main stringer standoffs Laminate lower main stringer two pieces A-in-sq spruce Glue stand off formers /6-in floor fuse lage glue stringer running keel G Glue 1/16 angular balsa gussets brace standoffs floor Add piece Y32-sq spruce doubling top longeron Tl tapering aft F Complete two lower stringers running C2 F3 aft F3 keel Form skid two pieces 1A x /2-in spruce laminating form made common nails board Drill skid screw attach points re move cover glass cloth paint match scheme Some 1-26 aircraft fabric fairing cover gap between skid fuselage quite often no fair ing used tail nose cone built up balsa Shape tail cone A-in core Lite Ply hold shape ply core doubled A-in balsa carved correct taper Tack-glue fuselage check maximum travel elevator horn will later glued after painting covering carefully drilled center nose cone after shaping soft balsa %2-in ply disc matches former 4-40 hex head bolt eased piece -in brass tube used bushing created N shape 3A2-in ply would slip behind drilled 4-40 blind mounting nut holds nose cone place bolt tight ened access hole 4-40 bolt serves scale air vent common 1-26 nose cones battery pack way also has advantage being acces sible acts balancing weight STICKY BUSINESS NOW AVAILABLE ON VHS VIDEO ADHESIVEUU Frank Tiano Producer Bob Violett nician ira KEEP YOU OWED TO YOUR SEAT Contains everything want know about Zap Loctite adhesive product informative Humorous 2 hours two intermissions ideal club meetings Produced Frank Tiano Techniques Frank Tiano Bob Viotett NOW AVAILABLE FOR SHOWING $3495 Plus $2 Shipping & Handling Name CityState __________ Zip Send $3695 $3495 plus $2 shipping & handling check money order Frank Tiano Enterprises 2460 SW 85 Terrace Davie FL 33324 Allow 4-6 weeks delivery Sorry cannot deliver post office boxes MA February 1988 129 WORLD CLASS tA Retr *6 Tony Frackowiaks Challenge IV Kit Atlanta KitDash Kit Hattori Headers Pipes AMA&FAIRC Aerobatic Specialties PO Box 388914-248-8603 Lincoindale NY 10540 Send $100 catalog FIBERGLASS PARTS Over 237 cowls kit scratch built models Also over 34 round cowls ranging 4 14-718 diameter 55 duff size & shape wheel pants custom Make Parts Vacuum Form Canopies Pining send $1 unqist kt TAD FIBERILASS SPECIALTIES 30925 nlock Dept 4 Garden city Ml 48135 PHONE 313421-6358 BRAZED & HEAI-TREAIED WIRE GEARS & CABANES PHONE 313 261-9064
Edition: Model Aviation - 1988/02
Page Numbers: 14, 16, 18, 20, 22, 129
John Preston 7afety Comes First Northampton St NW Washington DC 20015 Sharing airspace full-scale planes Use caution Helicopter preflight checklist Learn wind affects RC planes flight path safety FATAL ATTRACTION Back September 1980 issue Model Aviation columnist men tioned incident occurred West Coast involved collision between RC Sailplane hang glider Fortunately hang glider pilot suffered no serious injuries comment incident Simultaneous op eration RC Sailplanes hang gliders es sentially same site appears hazardous pursuit editorial Switch October 1987 issue British model magazine Radio Control Models & Electronics RCM&E re cently came attention devoted al entirely discussion another collision between Slope Soarer hang glider case hang glider pilot suffered fatal injur ies Devils Dyke Sussex England may long way Pacific Coast US However no matter fly share airspace other aircraft whether full-scale models ever present risk collision cir cumstances surrounding two incidents took place some seven years apart suf ficiently similar believe short dis cussion Devils Dyke incident described RCM&E necessary caution readers may fly RC Sailplanes slope shared hang gliders Apparently previous problems concerning cooperation between model hang glider pilots Devils Dyke However worked out some type agreement such hang gliders would confine activi ties area left public house pub RCers used area right day accident May 10 1987 model flier launched Salto Sailplane late afternoon flying about 10 15 min utes observed some hang gliders drifted airspace normally confined model-flying activities Recognizing poten tially dangerous situation developing modeler elected land Sailplane promptly However during downwind leg ap proach hang glider suddenly appeared field vision despite attempted evasive actlon collision occurred starboard wing hang glider promptly failed followed shortly similar fail ure port wing estimated altitude about 80 ft hang glider pilot insuffi cient time deploy parachute wearing sustained fatal injuries upon impact ground midair collision point close wing root Sailplane struck severed 3mm-diameter flying wire starboard wing hang glider later found fly ing wire hang gliders wing cut balsa leading edge models wing contacted aileron control brassand-steel wing joiner model models weight approximately four pounds together estimated closing speed 45-60 mph generated force hang gliders wing fly ing wire unable withstand inquest death hang glider pilot verdict death misadventure other words deceased assumed element risk undertaking no charges filed against pilot model Sailplane As anyone has involved modelto-model midair collision will recall concen tration flying own model such second model appears field vi sion generally too late take action avoid collision recommendation may fly slope potential shared airspace have observer present times sole job alert model pilots encroachment full-scale aircraft addition Slope Soaring club activity slope shared hang gliding club costs work out some form amicable agreement between two clubs such minimize eliminate pos sibility midair collision between aircraft two activities Helicopter safety October 1987 issue Model Aviation Safety column carried arti cle sent reader stated Because high degree complexity greater num ber moving parts probable Hel icopters prone mechanical failure fixed-wing models recent letter Lt Col Paul Tradelius took issue statement Pauls letter ex pressed following believe have done injustice Helicopters national maga zine because familiar least part Pauls accusation true certainly am familiar model Helicopters Since have neither built nor flown have rely others expert oper ation information safe practices Pauls letter went point out unlike fixed-wing models mechanical parts Helicopters such control linkages etc exposed can therefore checked easily Continued page 16 C -ii WELL IIT OFF UESS YOU AE VERY SNSIT1VE TO GLUE SMELLS odel Aviation K column provided address Items concern regarding safety aspects model aviation activities Content column however opinion author does necessarily represent official position Academy Model Aeronautics AVAILABLE IN 4-COLORS. Red Yellow White Black Helicopter Tail Rotor Blade Covering 7/8 x 9 Helicopter Tail Rotor Blade Covering 7/8 x 9 Helicopter Tail Rotor Blade Covering 7/8 x 9 Helicopter Tail Rotor Blade Covering 7/8 x 9 Helicopter Tail Rotor Blade Covering 1-7/16x 12 Helicopter Tail Rotor Blade Covering 1-7/16 x 1 2 Helicopter Tail Rotor Blade Covering 1-7/16x 12 Helicopter Tail Rotor Blade Covering 1-7/16x 12 Helicopter Main Rotor Blade Covering 2 x 48 Heiicopter Main Rotor Blade Coverina 2 x 48 DELUXE Nit $28500 plus shipping $1100 Everything full kit wing spars installed wiugn stab turttu deck butch & fin pie-shinned 1116 balsa MAKES BUILOtNG GUICKI Span85 Length66 Wing area 1213 sq Weight . 165 lbs Power035-040 G38-G62 FM JOt $21500 plus sllIppin $1100 Eveuytldeg scratch kit plus i weed pails complete mdd A11 wood & foam construction Flberglas cowl & pants 2-plece plug-in wings Foam core airfoiled tail surfaces No tail brace wires required FOR MORE INFO OR TO PLACE ORDER CONTACT SPIRIT LAKE HOBBIES Ph 712 336-5586 1621 Hill Ave Spirit Lake IA 5136 HEAT SHRINKABLE 4 MILTHICK FILM EASY TO FOLLOW INSTRUCTIONS 478 Helicopter Main Rotor Blade Covering 2 x 48 479 Helicopter Main Rotor Blade Covering 2 x 48 480 Helicopter Main Rotor Blade Covering 2-1/2x 60 481 Helicopter Main Rotor Blade Covering 2-1/2x 60 482 Helicopter Main Rotor Blade Covering 2-1/2x 60 483 Helicopter Main Rotor Blade Covering 2-1/2x 60 484 Helicopter Main Rotor Blade Covering 3-1/4 x 60 485 Helicopter Main Rotor Blade Covering 3-1/4 x 60 486 Helicopter Main Rotor Blade Covering 3-1/4 x 60 487 Helicopter Main Rotor Blade Covering 3-1/4 x 60 So added complexity doesnt necessarily make prone mechanical failure flier performs thorough preflight inspection October 1987 Safety column ended segment Helicopters asking readers preflight checklist type model would willing send copy Well Paul responded request cluded such checklist letter noted some parts may well apply fixed-wing models well PREFLIGHT CHECKLIST FOR MODEL HELICOPTERS 1 Always remember Murphys Law some thing can go wrong will Therefore never sume because particular part has given trouble past will continue work prop erly future means INSPECT EV ERYTHING 2 Never assume something isnt working correctly will good enough flight Whatever working correctly will certainly fix itself things can go bad worse 3 Get preflight routine stick Build habitual pattern checking everything certain sequence certain way write checklist needed Add checklist find other areas suspect 4 Some things check Helicopter follows Before looking little pieces give overall Helicopter general examination gray fuel residue could indication part coming loose vibrating Starting nose canopy re moved check radio installation secure Continued page 18 16 Model Aviation WITH EASY TO APPLY HELICOPTER BLADE COVERING FIVE SIZES AVAILABLE 7/8 x 9 1-7/16 x 12 2x 48 2-1/2x 60and 3-1/4x 60 468Wht 469BIk 470Red 471Yel 472Wht 473Bik 474Red 475Yel 476Wht 477BIki Red Yel Wht Bik Red Yel Wht Bik Red Yel eI TR260 p New French Aerobatic Design 114 Stnnd-nff Rrnl Kit Scratch ff11 $10300 plus shlpplng $1100 CuwI pants canupy lauding gear plans maw cares tot wing lad surfaces turtle deck & batch ikO~x 1063 Lorain Ohio 44055 e 216 282-8354 PijierCubPEANUTSCALE Piper Vagabond Piper Cub Stinuon 125 Outdoor kits $750 Light Indoor kits $795 OUTDOOR PEANUT Super ... $750 SPORT SCALE PC-6 Porter Taylor Craft Stinson Voyager Rubber CO Power Kits each. $850 SPORT MODELS An Embryo Model 18 Span designed winl beginners experts. $850 HARD-TO-FIND ITEMS Early Bird tiusue Antique Aircraft*596 True OlduJupanane Tiauue lOin 3 cobra*096 JupaneauTiusue 12 inOcolore*396 Microlita Silver$396 Microfilm Glue Solvent Conduutuer Paper 3 abruets*460 Plan Service over 17 Scale Spore Scale ft Peanut Scala Rubber Strip 020 thre 085each $196 3132 thru 5132each *250 Winder61 Mark 161 . *1296 complete urea Brown C0 Motore Balsa Wood Outdoor ft Indoor Sheets ft Strips Add 10% Poatage mum Postage *150 COMPLETE CATALOG *150 m WE ARE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY Satisfaction Guaranteed Direct Only BALSA SHEETS 36 48 30I 1/18233 3/32240 1/8 243 3/16245 14 256 1/32337 1/28337 1/163374931 3/32 3445637 1/8 3547145 3/16 3628258 1/4 3735861 5/16385 3/8 3 88 124 71 1/2 3 110 195 3/4 3 195 1/1645876 48 3/32 47094 56 1/8 4 80 106 66 3/16483 12275 1/44/10 134 64 3/84195 225 1/2 4 225 261 MATCHED SHEETS 42 3324100 1/94108 0164120 1/44131 BALSA STICKS 3648 1/16 1/409 1/16 3/810 1/16 1/214 3/32 1/410 3/32 3/612 3/32 1/216 1/8 1/808 1/8 1/41116 1/6 3/81218 3/8 1/21624 3/16 3/161116 3/16 3/517 3/16 1/32230 1/4 1/41624 1/4 3,81926 1/4 1/22/30 1/4 3/43444 1/4 140 5/165/162128 3/8 3/82737 3/8 1/23246 3/8 3/44255 3/8 192 1/2 /23653 1/2 682 1/2 158 5/5 5/848 3/4 3/467 BALSA HOT LINE Call 806 74S-6394 10 am -6pm Ceutral Time LONE STAR MODELS 123 57th St Lubbock TX 79412 IA * CC LSA TRIANGLES3636 1/41/4 2549 3/6 3/8 3049 1/21/2 3549 3/43/4 4856 1 1 5567 76 BALSA PLANKS3688 11 65115 1215039 13200220 14280300 11/2327578 11/2436081 22225100 233251/7 24435138 33495207 34659282 TAPERED SHEETS36 1/42 65TRAILING EDGE36 14385 14132 3/8259 516 / 1439 3/8398 381 246 1/23120 12270 LONE STAR EPOXY 9,L,t--895 5,598 15,598 30 r,r588 INSTANT6LUE / k298 / o Thi238 2, Thick950 2c 1/,550 CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% a serious modeler want performance must try 4-6 lb balsa LIGHT 4-6 LB WOOD 1/323 1/203 1/163 3/323 1/83 3/163 1/4 3 3/8 3 123 34 3 13 1/164 332 84 3164 144 384 1 2 SSWOOD 3/16 3/1 6 3/16 1/4 3/183/8 3/161/2 3/16 3/4 1/4 1/4 1/43/8 1/43/4 3/83/8 3/81/2 3/83/4 1/2 1/2 1/23/4 48 26 30 35 46 60 42 48 80 60 70 80 80 100 BUNDLE DEALS 201/6336685 20-1/164361020 203/32336845 153/32438955 1518336715 101/6436675 15316335900 103/16436810 101/4336630 101/4436800 103/8336890 53/8436628 5-1/2336940 51/2436855 103/32445845 51/8448485 53/16448585 51/4448625 PINE STICKS 36 48 1/8 18 18 14 1/83/8 316 316 316 3/8 3/1612 1/4 14 1/43/8 14 1 2 3838 1317 1623 2027 1724 2332 3040 2637 3042 3447 3752 5/16 SPRUCE STICKS 36 48 38 18 1815 16 141624 1/6 3/82029 3/1631834 14 143149 14 3/83659 3/8 3/84963 / 3/8 125570 1/2 1/26080 12 345988 SPRUCE TRIANGLES 3/83/8 1/2 1/2 34 3/4 36 45 01 77 48 150 300 HARD MAPLE 1/4 3/83/8 3/81/2 3/8 3/4 1/2 3/4 18 40 49 50 58 68 BIRCH DO WELS36 /809 31611 1414 25 32 3PLYBIRCH48 1/5412525 1/3212425 1/1612435 1/612450 SPLSBIRCH48 33212570 1612585 31612585 1412600 GROOVED LII MOUNTS 12 IncheS 3/83/4/18/40 3/83/4/532/40 1/23/4/3/16/45 LITEPL V 1/86 1/8 12 Handling Charge$300 pay UPS Add $200 COD $300 extra PP APO FPO WeaccplVia Maw Cad pe900a/ chocks COD 41/8% 14 ,Txa US xx,ercyoIy Mn,imOrde $1000 — ~ u.j 11 LI k [0] I] ires place properly tied down etc Fuel tank fittings tubing good condition Pushrods servos secure servo arms respective belicranks etc Check worn ball links loose balls Engine muffler mounted securely Clutch starter shaft main drive gear tail rotor drive gear move freely mesh prop erly Swashplate head secure no loose nuts bolts etc Lightly oil head bearings needed Check landing gear tail boom braces secure Check tightness tail rotor drive setscrews use too much force try over tighten setscrews will become rounded Check tail rotor blades blade holders bellcrank etc wear damage Again oil lightly needed Check horizontal vertical fin Turn tail rotor gently hand feel rough spots binding gears etc Turn main rotor direction again check rough spots binding etc Turn radio equipment check both radio control movement slop-free smooth operation other Helicopter modelers wish com ment add above items Pauls check list Id interested hearing Wind November 1987 Safety column reprinted part article seen model club newsletter explained per form certain aerobatic maneuvers obtain maxi Continued page 20 TRIM KNIFE Tr m Knife oesigneo precisely eage trim excess cover ng material model Can oe used outside eages straght csrveo Blade can set 1/16 101/4 wth simple adj ustment screw Trim Knife mill make p81001 Overlap ouo seams Works coverig materals 6 0/0000 Trm Knfe Set ino/udes 6 b/odes $900 Trm Kn 8 Blades 5 per pace $300 B No Notches Straight Cuts Heavy oury extra sharp solos oboe Same size regular blades burrp 0000 flex cun/ng strip ping thcker materials Great big birds Big Bird Blades box 100 blades $950 Trial size package 20 blades $250 18 Model Aviation IORE POWEii WITH LESS NOISE Want plane take off climb like homesick angel Make engine before American engineering best Less 90 ElBA 9 feet make bellewersll 1 Quieter glow 2 More mellow sounding four-cycle 3 More usable power both 4 Highest power-to-weight ratio 5 The lowest idle ever 6 Increase mileage up 4 times 7 Runs cooler glow 8 No glowplugs fail 9 Increased reliability 10 Fuel available concentrate Conversion kits available 049 30 cid Schnuerle ported engines Its sim ple just change heads fuel What waiting Dust off twocycle DIESELIZE Send self-addressed 37 stamped en velope $100 information call 203-877-1670 between 730 pm and 930 pm EST Mon thru Fri DAVIS DIESEL DEVELOPMENT PO Box 141 Milford CT 06460 The leader quiet combustion technology since 1976 ELECTRIC MOTOR MOUNT JT-EL1 P054 ALL 05-10075 M01RS AU 03505-15 COBALTS 895 JIEL2 25-40 Motors 1395 UGHT WEIGHT CAST ALUMINUM Includes motor hold down strip Screws versatile motor mount prrMdes firm firewall mounting popular elecuic moto1 Mount allows exchangIng motors best flight pedomtanca Motor can mounted through firewall fowaid firewall proper CG balancingorto fir design plane ELECTRIC MOTOR TEST STAND PLANES CaSr testing breaking comparing motors. Large heat sink clamp maxes motor tUfl coo/el Can also Used boat motor mount S avaNabls hobby shop ORDER DIRECT toe Ernadote shxnant Check MO VIact MC COD accepted Add 5O UPS OO COD 0I 20 Model Aviation mum points Pattern contests part reprinted November column concerned Stall Turn included authors statement performed crosswind direc tion turn should always wind rather away wind authors rationale advice model will turn easily wind cause wind pressure tail helps swing plane over asked readers believed authors advice rationale correct About half dozen readers responded agreed Stall Turn performed crosswind turn should wind correct reasoning Without getting vector diagrams other mathematical analyses Stall Turn let try give correct rationale Pattern fliers perform Stall Turns towards wind flying crosswind First let say Im talking about steady-state wind effects wind shear gusts etc part discussion Second pressure force exerted models tail crosswind exists model contact ground cause once model airborne no such thing far model concerned crosswind Before anyone puts pen paper disagree statement let say such terms upwind downwind crosswind refer air mass wind moving relative earth ground observer standing Once airplane takes off wind experiences due its own motion through air flies other words wind always dead nose ex ception occurs during sideslip Continued page 22 Authorized Warranty ServiceFREQUENCY CONVERSION $1000 Discount Regular Repair Moat Makes Models Convefled Tuning Donewith Spectrum Analyzer K- LINE Also Service ME E/ iiI trShadL Only Full Time Servicenter Midwest 117 East Main St Northvil le Michigan 48167 [Upper Lewli /~/ 1 -313-348-0085 9m Carry Largest Only Stock m Kratt Parts World raft N alIve working KRAFT MIDWEST ILL LI HIIATI FIX Jl/octzL tyLccRECORD BREAKER 1961 BROOKLYN DODGER 56 Cabin EWEST0 Retail 512 950*INTRODUCTORY PRICE0 $3900 1938 Record Breaker 96 $6956 1939 Zipper 59$5356 1938 Kloud King 63 $62 36 19111 Brigidier 56 $4676 1941 Super Quaker 78 $7276 1940 So Long 50$3036 1936 Buccaneer 84 $5996 1938 Clipper MKI 7y59156 1937 Dallaire 108 $75 16 1935 Miss America 84 $7196 1991 Playboy Sr 80 $5116 1991 Playboy Jr 54S3116 1938 Powerhouse 89 $53 56 1990 Sailplane 78 $8976 1938 Trenton Terror 72 $6076 1940 Ranger 4653198 1939 Korda Wake 44 $1916 l939Mercur 72 $1036 kits qualify SAM events PP & R/C feature highest quality machine Cut & sanded parts Superior Competition oheet strip wood wire & window material Plans orig EF models easil convertible 3ch RIC KITS Sailplanes Electric power Gas Hobby Horn SENSOAR Glider 78 $1801 Midway Model GNOME R/G Hand Launch Glider$2408 Jolly Models FLINGER R/C HLG 58 Span $2400 Midway Model FAST EDDIE Aerobatic /01 Elec$1908 Jolly Models ELECTRICUS Electric Glider 05s$3256 Leisure PLAYBOY SR 67 Gear 01 Elect $3080 Astro ASTRO SPORT 37 Direct 85 Elect $2218 CA Addressees add 6% tax 15173 Moran St A] Send MO Visa/MC#Exp PO Box 2212 Check allow up 38 Westminster Ca 92684 days CK clearance] 714 8938311 COD Exact Charges plus $110 Hdl Cash Only Aft Hrs 719 8951283] applying rudder opposhe aileron neces sary pilot deliberately forces airplane drift some angle through air flying still lets turn competi tion aerobatics model full-scale judges seated ground score high marks maneuvers must look good rel ative ground Lets assume crosswind exactly 900 flight line blowing toward flight line other words judges feel wind blowing directly faces such situation airplane judging perform what appears to vertical climb its axis will ver tical will angled wind Similarly after turn portion maneu ver accomplished airplane must descend direction appears vertical judges Again accomplish models axis must once angled wind So because during both ascent descent aircraft its axis vertical respect ground angled toward direction apparent wind does have rotate full 1800 during actual turn portion maneuver turn direction wind turn attempted away wind axis airplane must rotate through angle greater 1800 will take longer will seem observer ground have greater turn radius As result latter vis ual phenomenon may seem airplane performed Wingover rather Stall Turn since readily recognizable difference maneuvers radius turn case wondering article aerobatics included column concerning safety consider following excerpt letContinued page 129 Weve known put out great cataloglIterally best business Because take AC seriously years catalog no exception Packed over 200 pages full color action photographs 1988 Catalog next best thing favorite AC dealer contains everything Robbe makesboats cars planes gliders accessories beginners barestormers over 450 products 1988 Catalog can bring right home Youll find Robbes 1988 Catalog AC dealer now use coupon send yours today Just $&O0 Plus youW receive $400 certificate good towards next Robbe purchase { rolibe ......... PUU mmr.aauw. Evauehamv0muav0eg omma owm U U AOAa.o CitylStatetZlp Mall Robb Modalapart 1UTmndlp Urn ed Bells Mmmd NJ OWA U Cenlflcate eoq*s 21291U Good pwdoamof *1 andoerdkect*omRobh UVELANDS GREAT PLANS Historically PronOdl 87 Con JN4 iRney $37 80K MoqoRs Rb $42. 84 Fskkoo D7 FIr $39 188 OH MaqaBswb $55 70 Boyle Ooe0o 533 98 Steer FTl7Koyd $36 68 Howard P $32 99 NOll Widsw P61 $69 68 Soprworine 560 $24 71 Osag DC3 tC47 830 891 porearie 560 $33 93 bag DC3 1C47 553 63 C rt Howl P6E $42 86 Howl, Teooss 13 532 94 C rt Howk P6E $54 64 Staat SkyCor $18 74 DsslieloGB 11 $48.72Csr0281/4 LIS $46 93 Ma osoope Spmi $36 iot car 8201/4 t&l $36r * 00 Ha Ipo Rolidag $43 68 Doagla M2 Mall $24 07 AmonRo C3 Spt 83368 Rritol Ralldog hr 930 63 Hsword RooR lb $43 39 BrosRose MtA $04 78 nor WW Ras 933 107 Oraw Rearsl F8F $54 63 C Gsbl P1 1C $43 69 tiedkra Nlt21 $28 94 Car Csbk Fl 1C $547 91 tindbora NO211 $39 66 OsHon Comet Roo $24 96 WrNWlNov ges $48 63 Hosn96rMalligon $35 74 C 6114, SB2C4 $33 94 HswMrMalligon $45 188 FairokPT19 r $59 63 Boeing P26A Pt 536 6OWses ToperAVlng $36 84 Booing P36A FIr $48 eOWaso ToperVing $48 106W500 C6 Cobin $55,73 Welld tysond $32 i 64 Boos C 170 Stoa 938 108 Westld tyos4r $49 96 Rood C170 Slog $49 57 Ford Triart 4AT $36 tool 11 Eloatro $30 76 Ford Triet 4AT 848 82 tool 11 OlecIro $40 114 Ford Triwlr 4AT $60 62 Stlneen 7/W 007 $10 96 RelIance Alrro~ 848 81 Stnsn 7/W 107 $26 93 Looolaa C2Aepb $69 133 Stnan 7/W 007838-SB Oraw J2F Dal $39 59 Bratol hr P20 $20 78 Orem J3F bask $56 118 BrisIsi FIr P200 $43 124 took Air topre, 74 Tore. Pesos $45 63 tool Air Eopro, $24 36 Ca Warhl P40 $24 83 Is, Air topren $36 60 Vo8t Canal P40 $35 77 WWe 121 RaIL $48 80 Vol Corssir P40 $69 63 C Soohowb P7C1 840 78 Look tgbtn8 P38 $38 94 C Soaks. P7C1 $57 36 Rp Soo0o Am $24 108 Silsr 138 Ampk $49 74 Rop SesBoe Aw $39 60 Oboing 100 Iport 836 70 Fper 32 Cab $39 90 Osoing 198 Sport $49 106 PIpar 33 Cob $3972 Nsrtbrop Ooweo $48 98 took Hadan Owl $30 96 Nartbrsp Gomaro $73 63 Graw POF Hllcot $28 90 StieA tsar 3/M $56 77 Booing 0170 Psrt$25 60 StinA tsw 3/M $42 103 Ba. B170 Port 555 120 lOnsA 3/M $82 68 WeetI W1irlwlnd $32 78 ConslCotPBY5A $42 68 N Anoo Navisn $39 104 ConColPRYSA $36 68 BBooooeo YToil $39 63 MCbtoo Clipper 065 77 laoowle Sdsn $25 97 MChlna Clip nr $70 72 NA 8-25 Rowbor 849 Corli, NC4 $59 3 MMoroader 826 $49 94 Corti, NC4 $69 areeenOosnIcaeoo ga*ETEE Silk OIosnruas Daerl401 OSa Ue 6122 Pos Aiway lnl Add 10% oil order tiyya & in. tIR. USA Coo & Mon EIeoohe 15% 173% iR Syoirl Pictoiol ooroloa $Z$$ Unclad Plse 1111 Pri 111 DOIIOO olon 5100 II oi, tocelan odd 8100 CLEVELAND MODEL&SUPPLYCo oortOooeceoeao 183070 BOTROIT AVE CLEVELAND OHIO 44102 wcacew Rasle Phoot Ia 3 IS PMF ST lOr 0 ST 112101 9612000 22 Model Aviation Safety/Preston Continued page 22 ter received Stasi Poulos Dallas TX recently helping newcomer RC fly ing soloed become quite confident ability lost almost fear about flying wind day watched him take off 15 mph steady headwind ascent beautiful could until turned downwind made decision throttle back since plane seemed pick up much speed downwind leg plane banked slightly tried correct bank ailerons horror hollered ailerons werent work ing Yet still throttle elevator control Convinced victim chanical radio failure handed threw transmitter regained control landed tried explain him what happened plane turned downwind its air speed did change its speed over ground did student felt plane passing him too fast solution throt tIe back failed realize did re duce speed plane passed him no real indication planes airspeed reduced airspeed until plane stalled Ailerons change lift aircrafts wings no lift can swing want youll never know difference student said No way plane wasnt moving slow What really saw however stalled plane moving air mass Stasis description incident makes wonder radios have sent off correction failures really didnt occur opinion appreciation visual effect wind models flight characteristics has direct bearing safely fly Have safe month watch out downwind turns Schweizer/Moskal Continued page 36 forward canopy molded piece plastic clamped frame heated oven drawn over wooden plug method has described times other articlesone best being Steve Gray March 1987 issue Model Builder would rather make canopy available ready-made Shabo Scale 2416 North 66th Wauwatosa WI 52213 Plan canopy hold-downsrubberbands mini ature hooks simplest lightest Route pair inner Nyrods PL PR spoiler servo glue Install airborne gear check ac tions correcting binding rubbjng Complete turtledeck structure add crossgrain floor Xe-in balsa E U Glue both halves F3 four A-in balsa lower main stringer standoffs Laminate lower main stringer two pieces A-in-sq spruce Glue stand off formers /6-in floor fuse lage glue stringer running keel G Glue 1/16 angular balsa gussets brace standoffs floor Add piece Y32-sq spruce doubling top longeron Tl tapering aft F Complete two lower stringers running C2 F3 aft F3 keel Form skid two pieces 1A x /2-in spruce laminating form made common nails board Drill skid screw attach points re move cover glass cloth paint match scheme Some 1-26 aircraft fabric fairing cover gap between skid fuselage quite often no fair ing used tail nose cone built up balsa Shape tail cone A-in core Lite Ply hold shape ply core doubled A-in balsa carved correct taper Tack-glue fuselage check maximum travel elevator horn will later glued after painting covering carefully drilled center nose cone after shaping soft balsa %2-in ply disc matches former 4-40 hex head bolt eased piece -in brass tube used bushing created N shape 3A2-in ply would slip behind drilled 4-40 blind mounting nut holds nose cone place bolt tight ened access hole 4-40 bolt serves scale air vent common 1-26 nose cones battery pack way also has advantage being acces sible acts balancing weight STICKY BUSINESS NOW AVAILABLE ON VHS VIDEO ADHESIVEUU Frank Tiano Producer Bob Violett nician ira KEEP YOU OWED TO YOUR SEAT Contains everything want know about Zap Loctite adhesive product informative Humorous 2 hours two intermissions ideal club meetings Produced Frank Tiano Techniques Frank Tiano Bob Viotett NOW AVAILABLE FOR SHOWING $3495 Plus $2 Shipping & Handling Name CityState __________ Zip Send $3695 $3495 plus $2 shipping & handling check money order Frank Tiano Enterprises 2460 SW 85 Terrace Davie FL 33324 Allow 4-6 weeks delivery Sorry cannot deliver post office boxes MA February 1988 129 WORLD CLASS tA Retr *6 Tony Frackowiaks Challenge IV Kit Atlanta KitDash Kit Hattori Headers Pipes AMA&FAIRC Aerobatic Specialties PO Box 388914-248-8603 Lincoindale NY 10540 Send $100 catalog FIBERGLASS PARTS Over 237 cowls kit scratch built models Also over 34 round cowls ranging 4 14-718 diameter 55 duff size & shape wheel pants custom Make Parts Vacuum Form Canopies Pining send $1 unqist kt TAD FIBERILASS SPECIALTIES 30925 nlock Dept 4 Garden city Ml 48135 PHONE 313421-6358 BRAZED & HEAI-TREAIED WIRE GEARS & CABANES PHONE 313 261-9064
Edition: Model Aviation - 1988/02
Page Numbers: 14, 16, 18, 20, 22, 129
John Preston 7afety Comes First Northampton St NW Washington DC 20015 Sharing airspace full-scale planes Use caution Helicopter preflight checklist Learn wind affects RC planes flight path safety FATAL ATTRACTION Back September 1980 issue Model Aviation columnist men tioned incident occurred West Coast involved collision between RC Sailplane hang glider Fortunately hang glider pilot suffered no serious injuries comment incident Simultaneous op eration RC Sailplanes hang gliders es sentially same site appears hazardous pursuit editorial Switch October 1987 issue British model magazine Radio Control Models & Electronics RCM&E re cently came attention devoted al entirely discussion another collision between Slope Soarer hang glider case hang glider pilot suffered fatal injur ies Devils Dyke Sussex England may long way Pacific Coast US However no matter fly share airspace other aircraft whether full-scale models ever present risk collision cir cumstances surrounding two incidents took place some seven years apart suf ficiently similar believe short dis cussion Devils Dyke incident described RCM&E necessary caution readers may fly RC Sailplanes slope shared hang gliders Apparently previous problems concerning cooperation between model hang glider pilots Devils Dyke However worked out some type agreement such hang gliders would confine activi ties area left public house pub RCers used area right day accident May 10 1987 model flier launched Salto Sailplane late afternoon flying about 10 15 min utes observed some hang gliders drifted airspace normally confined model-flying activities Recognizing poten tially dangerous situation developing modeler elected land Sailplane promptly However during downwind leg ap proach hang glider suddenly appeared field vision despite attempted evasive actlon collision occurred starboard wing hang glider promptly failed followed shortly similar fail ure port wing estimated altitude about 80 ft hang glider pilot insuffi cient time deploy parachute wearing sustained fatal injuries upon impact ground midair collision point close wing root Sailplane struck severed 3mm-diameter flying wire starboard wing hang glider later found fly ing wire hang gliders wing cut balsa leading edge models wing contacted aileron control brassand-steel wing joiner model models weight approximately four pounds together estimated closing speed 45-60 mph generated force hang gliders wing fly ing wire unable withstand inquest death hang glider pilot verdict death misadventure other words deceased assumed element risk undertaking no charges filed against pilot model Sailplane As anyone has involved modelto-model midair collision will recall concen tration flying own model such second model appears field vi sion generally too late take action avoid collision recommendation may fly slope potential shared airspace have observer present times sole job alert model pilots encroachment full-scale aircraft addition Slope Soaring club activity slope shared hang gliding club costs work out some form amicable agreement between two clubs such minimize eliminate pos sibility midair collision between aircraft two activities Helicopter safety October 1987 issue Model Aviation Safety column carried arti cle sent reader stated Because high degree complexity greater num ber moving parts probable Hel icopters prone mechanical failure fixed-wing models recent letter Lt Col Paul Tradelius took issue statement Pauls letter ex pressed following believe have done injustice Helicopters national maga zine because familiar least part Pauls accusation true certainly am familiar model Helicopters Since have neither built nor flown have rely others expert oper ation information safe practices Pauls letter went point out unlike fixed-wing models mechanical parts Helicopters such control linkages etc exposed can therefore checked easily Continued page 16 C -ii WELL IIT OFF UESS YOU AE VERY SNSIT1VE TO GLUE SMELLS odel Aviation K column provided address Items concern regarding safety aspects model aviation activities Content column however opinion author does necessarily represent official position Academy Model Aeronautics AVAILABLE IN 4-COLORS. Red Yellow White Black Helicopter Tail Rotor Blade Covering 7/8 x 9 Helicopter Tail Rotor Blade Covering 7/8 x 9 Helicopter Tail Rotor Blade Covering 7/8 x 9 Helicopter Tail Rotor Blade Covering 7/8 x 9 Helicopter Tail Rotor Blade Covering 1-7/16x 12 Helicopter Tail Rotor Blade Covering 1-7/16 x 1 2 Helicopter Tail Rotor Blade Covering 1-7/16x 12 Helicopter Tail Rotor Blade Covering 1-7/16x 12 Helicopter Main Rotor Blade Covering 2 x 48 Heiicopter Main Rotor Blade Coverina 2 x 48 DELUXE Nit $28500 plus shipping $1100 Everything full kit wing spars installed wiugn stab turttu deck butch & fin pie-shinned 1116 balsa MAKES BUILOtNG GUICKI Span85 Length66 Wing area 1213 sq Weight . 165 lbs Power035-040 G38-G62 FM JOt $21500 plus sllIppin $1100 Eveuytldeg scratch kit plus i weed pails complete mdd A11 wood & foam construction Flberglas cowl & pants 2-plece plug-in wings Foam core airfoiled tail surfaces No tail brace wires required FOR MORE INFO OR TO PLACE ORDER CONTACT SPIRIT LAKE HOBBIES Ph 712 336-5586 1621 Hill Ave Spirit Lake IA 5136 HEAT SHRINKABLE 4 MILTHICK FILM EASY TO FOLLOW INSTRUCTIONS 478 Helicopter Main Rotor Blade Covering 2 x 48 479 Helicopter Main Rotor Blade Covering 2 x 48 480 Helicopter Main Rotor Blade Covering 2-1/2x 60 481 Helicopter Main Rotor Blade Covering 2-1/2x 60 482 Helicopter Main Rotor Blade Covering 2-1/2x 60 483 Helicopter Main Rotor Blade Covering 2-1/2x 60 484 Helicopter Main Rotor Blade Covering 3-1/4 x 60 485 Helicopter Main Rotor Blade Covering 3-1/4 x 60 486 Helicopter Main Rotor Blade Covering 3-1/4 x 60 487 Helicopter Main Rotor Blade Covering 3-1/4 x 60 So added complexity doesnt necessarily make prone mechanical failure flier performs thorough preflight inspection October 1987 Safety column ended segment Helicopters asking readers preflight checklist type model would willing send copy Well Paul responded request cluded such checklist letter noted some parts may well apply fixed-wing models well PREFLIGHT CHECKLIST FOR MODEL HELICOPTERS 1 Always remember Murphys Law some thing can go wrong will Therefore never sume because particular part has given trouble past will continue work prop erly future means INSPECT EV ERYTHING 2 Never assume something isnt working correctly will good enough flight Whatever working correctly will certainly fix itself things can go bad worse 3 Get preflight routine stick Build habitual pattern checking everything certain sequence certain way write checklist needed Add checklist find other areas suspect 4 Some things check Helicopter follows Before looking little pieces give overall Helicopter general examination gray fuel residue could indication part coming loose vibrating Starting nose canopy re moved check radio installation secure Continued page 18 16 Model Aviation WITH EASY TO APPLY HELICOPTER BLADE COVERING FIVE SIZES AVAILABLE 7/8 x 9 1-7/16 x 12 2x 48 2-1/2x 60and 3-1/4x 60 468Wht 469BIk 470Red 471Yel 472Wht 473Bik 474Red 475Yel 476Wht 477BIki Red Yel Wht Bik Red Yel Wht Bik Red Yel eI TR260 p New French Aerobatic Design 114 Stnnd-nff Rrnl Kit Scratch ff11 $10300 plus shlpplng $1100 CuwI pants canupy lauding gear plans maw cares tot wing lad surfaces turtle deck & batch ikO~x 1063 Lorain Ohio 44055 e 216 282-8354 PijierCubPEANUTSCALE Piper Vagabond Piper Cub Stinuon 125 Outdoor kits $750 Light Indoor kits $795 OUTDOOR PEANUT Super ... $750 SPORT SCALE PC-6 Porter Taylor Craft Stinson Voyager Rubber CO Power Kits each. $850 SPORT MODELS An Embryo Model 18 Span designed winl beginners experts. $850 HARD-TO-FIND ITEMS Early Bird tiusue Antique Aircraft*596 True OlduJupanane Tiauue lOin 3 cobra*096 JupaneauTiusue 12 inOcolore*396 Microlita Silver$396 Microfilm Glue Solvent Conduutuer Paper 3 abruets*460 Plan Service over 17 Scale Spore Scale ft Peanut Scala Rubber Strip 020 thre 085each $196 3132 thru 5132each *250 Winder61 Mark 161 . *1296 complete urea Brown C0 Motore Balsa Wood Outdoor ft Indoor Sheets ft Strips Add 10% Poatage mum Postage *150 COMPLETE CATALOG *150 m WE ARE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY Satisfaction Guaranteed Direct Only BALSA SHEETS 36 48 30I 1/18233 3/32240 1/8 243 3/16245 14 256 1/32337 1/28337 1/163374931 3/32 3445637 1/8 3547145 3/16 3628258 1/4 3735861 5/16385 3/8 3 88 124 71 1/2 3 110 195 3/4 3 195 1/1645876 48 3/32 47094 56 1/8 4 80 106 66 3/16483 12275 1/44/10 134 64 3/84195 225 1/2 4 225 261 MATCHED SHEETS 42 3324100 1/94108 0164120 1/44131 BALSA STICKS 3648 1/16 1/409 1/16 3/810 1/16 1/214 3/32 1/410 3/32 3/612 3/32 1/216 1/8 1/808 1/8 1/41116 1/6 3/81218 3/8 1/21624 3/16 3/161116 3/16 3/517 3/16 1/32230 1/4 1/41624 1/4 3,81926 1/4 1/22/30 1/4 3/43444 1/4 140 5/165/162128 3/8 3/82737 3/8 1/23246 3/8 3/44255 3/8 192 1/2 /23653 1/2 682 1/2 158 5/5 5/848 3/4 3/467 BALSA HOT LINE Call 806 74S-6394 10 am -6pm Ceutral Time LONE STAR MODELS 123 57th St Lubbock TX 79412 IA * CC LSA TRIANGLES3636 1/41/4 2549 3/6 3/8 3049 1/21/2 3549 3/43/4 4856 1 1 5567 76 BALSA PLANKS3688 11 65115 1215039 13200220 14280300 11/2327578 11/2436081 22225100 233251/7 24435138 33495207 34659282 TAPERED SHEETS36 1/42 65TRAILING EDGE36 14385 14132 3/8259 516 / 1439 3/8398 381 246 1/23120 12270 LONE STAR EPOXY 9,L,t--895 5,598 15,598 30 r,r588 INSTANT6LUE / k298 / o Thi238 2, Thick950 2c 1/,550 CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% a serious modeler want performance must try 4-6 lb balsa LIGHT 4-6 LB WOOD 1/323 1/203 1/163 3/323 1/83 3/163 1/4 3 3/8 3 123 34 3 13 1/164 332 84 3164 144 384 1 2 SSWOOD 3/16 3/1 6 3/16 1/4 3/183/8 3/161/2 3/16 3/4 1/4 1/4 1/43/8 1/43/4 3/83/8 3/81/2 3/83/4 1/2 1/2 1/23/4 48 26 30 35 46 60 42 48 80 60 70 80 80 100 BUNDLE DEALS 201/6336685 20-1/164361020 203/32336845 153/32438955 1518336715 101/6436675 15316335900 103/16436810 101/4336630 101/4436800 103/8336890 53/8436628 5-1/2336940 51/2436855 103/32445845 51/8448485 53/16448585 51/4448625 PINE STICKS 36 48 1/8 18 18 14 1/83/8 316 316 316 3/8 3/1612 1/4 14 1/43/8 14 1 2 3838 1317 1623 2027 1724 2332 3040 2637 3042 3447 3752 5/16 SPRUCE STICKS 36 48 38 18 1815 16 141624 1/6 3/82029 3/1631834 14 143149 14 3/83659 3/8 3/84963 / 3/8 125570 1/2 1/26080 12 345988 SPRUCE TRIANGLES 3/83/8 1/2 1/2 34 3/4 36 45 01 77 48 150 300 HARD MAPLE 1/4 3/83/8 3/81/2 3/8 3/4 1/2 3/4 18 40 49 50 58 68 BIRCH DO WELS36 /809 31611 1414 25 32 3PLYBIRCH48 1/5412525 1/3212425 1/1612435 1/612450 SPLSBIRCH48 33212570 1612585 31612585 1412600 GROOVED LII MOUNTS 12 IncheS 3/83/4/18/40 3/83/4/532/40 1/23/4/3/16/45 LITEPL V 1/86 1/8 12 Handling Charge$300 pay UPS Add $200 COD $300 extra PP APO FPO WeaccplVia Maw Cad pe900a/ chocks COD 41/8% 14 ,Txa US xx,ercyoIy Mn,imOrde $1000 — ~ u.j 11 LI k [0] I] ires place properly tied down etc Fuel tank fittings tubing good condition Pushrods servos secure servo arms respective belicranks etc Check worn ball links loose balls Engine muffler mounted securely Clutch starter shaft main drive gear tail rotor drive gear move freely mesh prop erly Swashplate head secure no loose nuts bolts etc Lightly oil head bearings needed Check landing gear tail boom braces secure Check tightness tail rotor drive setscrews use too much force try over tighten setscrews will become rounded Check tail rotor blades blade holders bellcrank etc wear damage Again oil lightly needed Check horizontal vertical fin Turn tail rotor gently hand feel rough spots binding gears etc Turn main rotor direction again check rough spots binding etc Turn radio equipment check both radio control movement slop-free smooth operation other Helicopter modelers wish com ment add above items Pauls check list Id interested hearing Wind November 1987 Safety column reprinted part article seen model club newsletter explained per form certain aerobatic maneuvers obtain maxi Continued page 20 TRIM KNIFE Tr m Knife oesigneo precisely eage trim excess cover ng material model Can oe used outside eages straght csrveo Blade can set 1/16 101/4 wth simple adj ustment screw Trim Knife mill make p81001 Overlap ouo seams Works coverig materals 6 0/0000 Trm Knfe Set ino/udes 6 b/odes $900 Trm Kn 8 Blades 5 per pace $300 B No Notches Straight Cuts Heavy oury extra sharp solos oboe Same size regular blades burrp 0000 flex cun/ng strip ping thcker materials Great big birds Big Bird Blades box 100 blades $950 Trial size package 20 blades $250 18 Model Aviation IORE POWEii WITH LESS NOISE Want plane take off climb like homesick angel Make engine before American engineering best Less 90 ElBA 9 feet make bellewersll 1 Quieter glow 2 More mellow sounding four-cycle 3 More usable power both 4 Highest power-to-weight ratio 5 The lowest idle ever 6 Increase mileage up 4 times 7 Runs cooler glow 8 No glowplugs fail 9 Increased reliability 10 Fuel available concentrate Conversion kits available 049 30 cid Schnuerle ported engines Its sim ple just change heads fuel What waiting Dust off twocycle DIESELIZE Send self-addressed 37 stamped en velope $100 information call 203-877-1670 between 730 pm and 930 pm EST Mon thru Fri DAVIS DIESEL DEVELOPMENT PO Box 141 Milford CT 06460 The leader quiet combustion technology since 1976 ELECTRIC MOTOR MOUNT JT-EL1 P054 ALL 05-10075 M01RS AU 03505-15 COBALTS 895 JIEL2 25-40 Motors 1395 UGHT WEIGHT CAST ALUMINUM Includes motor hold down strip Screws versatile motor mount prrMdes firm firewall mounting popular elecuic moto1 Mount allows exchangIng motors best flight pedomtanca Motor can mounted through firewall fowaid firewall proper CG balancingorto fir design plane ELECTRIC MOTOR TEST STAND PLANES CaSr testing breaking comparing motors. Large heat sink clamp maxes motor tUfl coo/el Can also Used boat motor mount S avaNabls hobby shop ORDER DIRECT toe Ernadote shxnant Check MO VIact MC COD accepted Add 5O UPS OO COD 0I 20 Model Aviation mum points Pattern contests part reprinted November column concerned Stall Turn included authors statement performed crosswind direc tion turn should always wind rather away wind authors rationale advice model will turn easily wind cause wind pressure tail helps swing plane over asked readers believed authors advice rationale correct About half dozen readers responded agreed Stall Turn performed crosswind turn should wind correct reasoning Without getting vector diagrams other mathematical analyses Stall Turn let try give correct rationale Pattern fliers perform Stall Turns towards wind flying crosswind First let say Im talking about steady-state wind effects wind shear gusts etc part discussion Second pressure force exerted models tail crosswind exists model contact ground cause once model airborne no such thing far model concerned crosswind Before anyone puts pen paper disagree statement let say such terms upwind downwind crosswind refer air mass wind moving relative earth ground observer standing Once airplane takes off wind experiences due its own motion through air flies other words wind always dead nose ex ception occurs during sideslip Continued page 22 Authorized Warranty ServiceFREQUENCY CONVERSION $1000 Discount Regular Repair Moat Makes Models Convefled Tuning Donewith Spectrum Analyzer K- LINE Also Service ME E/ iiI trShadL Only Full Time Servicenter Midwest 117 East Main St Northvil le Michigan 48167 [Upper Lewli /~/ 1 -313-348-0085 9m Carry Largest Only Stock m Kratt Parts World raft N alIve working KRAFT MIDWEST ILL LI HIIATI FIX Jl/octzL tyLccRECORD BREAKER 1961 BROOKLYN DODGER 56 Cabin EWEST0 Retail 512 950*INTRODUCTORY PRICE0 $3900 1938 Record Breaker 96 $6956 1939 Zipper 59$5356 1938 Kloud King 63 $62 36 19111 Brigidier 56 $4676 1941 Super Quaker 78 $7276 1940 So Long 50$3036 1936 Buccaneer 84 $5996 1938 Clipper MKI 7y59156 1937 Dallaire 108 $75 16 1935 Miss America 84 $7196 1991 Playboy Sr 80 $5116 1991 Playboy Jr 54S3116 1938 Powerhouse 89 $53 56 1990 Sailplane 78 $8976 1938 Trenton Terror 72 $6076 1940 Ranger 4653198 1939 Korda Wake 44 $1916 l939Mercur 72 $1036 kits qualify SAM events PP & R/C feature highest quality machine Cut & sanded parts Superior Competition oheet strip wood wire & window material Plans orig EF models easil convertible 3ch RIC KITS Sailplanes Electric power Gas Hobby Horn SENSOAR Glider 78 $1801 Midway Model GNOME R/G Hand Launch Glider$2408 Jolly Models FLINGER R/C HLG 58 Span $2400 Midway Model FAST EDDIE Aerobatic /01 Elec$1908 Jolly Models ELECTRICUS Electric Glider 05s$3256 Leisure PLAYBOY SR 67 Gear 01 Elect $3080 Astro ASTRO SPORT 37 Direct 85 Elect $2218 CA Addressees add 6% tax 15173 Moran St A] Send MO Visa/MC#Exp PO Box 2212 Check allow up 38 Westminster Ca 92684 days CK clearance] 714 8938311 COD Exact Charges plus $110 Hdl Cash Only Aft Hrs 719 8951283] applying rudder opposhe aileron neces sary pilot deliberately forces airplane drift some angle through air flying still lets turn competi tion aerobatics model full-scale judges seated ground score high marks maneuvers must look good rel ative ground Lets assume crosswind exactly 900 flight line blowing toward flight line other words judges feel wind blowing directly faces such situation airplane judging perform what appears to vertical climb its axis will ver tical will angled wind Similarly after turn portion maneu ver accomplished airplane must descend direction appears vertical judges Again accomplish models axis must once angled wind So because during both ascent descent aircraft its axis vertical respect ground angled toward direction apparent wind does have rotate full 1800 during actual turn portion maneuver turn direction wind turn attempted away wind axis airplane must rotate through angle greater 1800 will take longer will seem observer ground have greater turn radius As result latter vis ual phenomenon may seem airplane performed Wingover rather Stall Turn since readily recognizable difference maneuvers radius turn case wondering article aerobatics included column concerning safety consider following excerpt letContinued page 129 Weve known put out great cataloglIterally best business Because take AC seriously years catalog no exception Packed over 200 pages full color action photographs 1988 Catalog next best thing favorite AC dealer contains everything Robbe makesboats cars planes gliders accessories beginners barestormers over 450 products 1988 Catalog can bring right home Youll find Robbes 1988 Catalog AC dealer now use coupon send yours today Just $&O0 Plus youW receive $400 certificate good towards next Robbe purchase { rolibe ......... PUU mmr.aauw. Evauehamv0muav0eg omma owm U U AOAa.o CitylStatetZlp Mall Robb Modalapart 1UTmndlp Urn ed Bells Mmmd NJ OWA U Cenlflcate eoq*s 21291U Good pwdoamof *1 andoerdkect*omRobh UVELANDS GREAT PLANS Historically PronOdl 87 Con JN4 iRney $37 80K MoqoRs Rb $42. 84 Fskkoo D7 FIr $39 188 OH MaqaBswb $55 70 Boyle Ooe0o 533 98 Steer FTl7Koyd $36 68 Howard P $32 99 NOll Widsw P61 $69 68 Soprworine 560 $24 71 Osag DC3 tC47 830 891 porearie 560 $33 93 bag DC3 1C47 553 63 C rt Howl P6E $42 86 Howl, Teooss 13 532 94 C rt Howk P6E $54 64 Staat SkyCor $18 74 DsslieloGB 11 $48.72Csr0281/4 LIS $46 93 Ma osoope Spmi $36 iot car 8201/4 t&l $36r * 00 Ha Ipo Rolidag $43 68 Doagla M2 Mall $24 07 AmonRo C3 Spt 83368 Rritol Ralldog hr 930 63 Hsword RooR lb $43 39 BrosRose MtA $04 78 nor WW Ras 933 107 Oraw Rearsl F8F $54 63 C Gsbl P1 1C $43 69 tiedkra Nlt21 $28 94 Car Csbk Fl 1C $547 91 tindbora NO211 $39 66 OsHon Comet Roo $24 96 WrNWlNov ges $48 63 Hosn96rMalligon $35 74 C 6114, SB2C4 $33 94 HswMrMalligon $45 188 FairokPT19 r $59 63 Boeing P26A Pt 536 6OWses ToperAVlng $36 84 Booing P36A FIr $48 eOWaso ToperVing $48 106W500 C6 Cobin $55,73 Welld tysond $32 i 64 Boos C 170 Stoa 938 108 Westld tyos4r $49 96 Rood C170 Slog $49 57 Ford Triart 4AT $36 tool 11 Eloatro $30 76 Ford Triet 4AT 848 82 tool 11 OlecIro $40 114 Ford Triwlr 4AT $60 62 Stlneen 7/W 007 $10 96 RelIance Alrro~ 848 81 Stnsn 7/W 107 $26 93 Looolaa C2Aepb $69 133 Stnan 7/W 007838-SB Oraw J2F Dal $39 59 Bratol hr P20 $20 78 Orem J3F bask $56 118 BrisIsi FIr P200 $43 124 took Air topre, 74 Tore. Pesos $45 63 tool Air Eopro, $24 36 Ca Warhl P40 $24 83 Is, Air topren $36 60 Vo8t Canal P40 $35 77 WWe 121 RaIL $48 80 Vol Corssir P40 $69 63 C Soohowb P7C1 840 78 Look tgbtn8 P38 $38 94 C Soaks. P7C1 $57 36 Rp Soo0o Am $24 108 Silsr 138 Ampk $49 74 Rop SesBoe Aw $39 60 Oboing 100 Iport 836 70 Fper 32 Cab $39 90 Osoing 198 Sport $49 106 PIpar 33 Cob $3972 Nsrtbrop Ooweo $48 98 took Hadan Owl $30 96 Nartbrsp Gomaro $73 63 Graw POF Hllcot $28 90 StieA tsar 3/M $56 77 Booing 0170 Psrt$25 60 StinA tsw 3/M $42 103 Ba. B170 Port 555 120 lOnsA 3/M $82 68 WeetI W1irlwlnd $32 78 ConslCotPBY5A $42 68 N Anoo Navisn $39 104 ConColPRYSA $36 68 BBooooeo YToil $39 63 MCbtoo Clipper 065 77 laoowle Sdsn $25 97 MChlna Clip nr $70 72 NA 8-25 Rowbor 849 Corli, NC4 $59 3 MMoroader 826 $49 94 Corti, NC4 $69 areeenOosnIcaeoo ga*ETEE Silk OIosnruas Daerl401 OSa Ue 6122 Pos Aiway lnl Add 10% oil order tiyya & in. tIR. USA Coo & Mon EIeoohe 15% 173% iR Syoirl Pictoiol ooroloa $Z$$ Unclad Plse 1111 Pri 111 DOIIOO olon 5100 II oi, tocelan odd 8100 CLEVELAND MODEL&SUPPLYCo oortOooeceoeao 183070 BOTROIT AVE CLEVELAND OHIO 44102 wcacew Rasle Phoot Ia 3 IS PMF ST lOr 0 ST 112101 9612000 22 Model Aviation Safety/Preston Continued page 22 ter received Stasi Poulos Dallas TX recently helping newcomer RC fly ing soloed become quite confident ability lost almost fear about flying wind day watched him take off 15 mph steady headwind ascent beautiful could until turned downwind made decision throttle back since plane seemed pick up much speed downwind leg plane banked slightly tried correct bank ailerons horror hollered ailerons werent work ing Yet still throttle elevator control Convinced victim chanical radio failure handed threw transmitter regained control landed tried explain him what happened plane turned downwind its air speed did change its speed over ground did student felt plane passing him too fast solution throt tIe back failed realize did re duce speed plane passed him no real indication planes airspeed reduced airspeed until plane stalled Ailerons change lift aircrafts wings no lift can swing want youll never know difference student said No way plane wasnt moving slow What really saw however stalled plane moving air mass Stasis description incident makes wonder radios have sent off correction failures really didnt occur opinion appreciation visual effect wind models flight characteristics has direct bearing safely fly Have safe month watch out downwind turns Schweizer/Moskal Continued page 36 forward canopy molded piece plastic clamped frame heated oven drawn over wooden plug method has described times other articlesone best being Steve Gray March 1987 issue Model Builder would rather make canopy available ready-made Shabo Scale 2416 North 66th Wauwatosa WI 52213 Plan canopy hold-downsrubberbands mini ature hooks simplest lightest Route pair inner Nyrods PL PR spoiler servo glue Install airborne gear check ac tions correcting binding rubbjng Complete turtledeck structure add crossgrain floor Xe-in balsa E U Glue both halves F3 four A-in balsa lower main stringer standoffs Laminate lower main stringer two pieces A-in-sq spruce Glue stand off formers /6-in floor fuse lage glue stringer running keel G Glue 1/16 angular balsa gussets brace standoffs floor Add piece Y32-sq spruce doubling top longeron Tl tapering aft F Complete two lower stringers running C2 F3 aft F3 keel Form skid two pieces 1A x /2-in spruce laminating form made common nails board Drill skid screw attach points re move cover glass cloth paint match scheme Some 1-26 aircraft fabric fairing cover gap between skid fuselage quite often no fair ing used tail nose cone built up balsa Shape tail cone A-in core Lite Ply hold shape ply core doubled A-in balsa carved correct taper Tack-glue fuselage check maximum travel elevator horn will later glued after painting covering carefully drilled center nose cone after shaping soft balsa %2-in ply disc matches former 4-40 hex head bolt eased piece -in brass tube used bushing created N shape 3A2-in ply would slip behind drilled 4-40 blind mounting nut holds nose cone place bolt tight ened access hole 4-40 bolt serves scale air vent common 1-26 nose cones battery pack way also has advantage being acces sible acts balancing weight STICKY BUSINESS NOW AVAILABLE ON VHS VIDEO ADHESIVEUU Frank Tiano Producer Bob Violett nician ira KEEP YOU OWED TO YOUR SEAT Contains everything want know about Zap Loctite adhesive product informative Humorous 2 hours two intermissions ideal club meetings Produced Frank Tiano Techniques Frank Tiano Bob Viotett NOW AVAILABLE FOR SHOWING $3495 Plus $2 Shipping & Handling Name CityState __________ Zip Send $3695 $3495 plus $2 shipping & handling check money order Frank Tiano Enterprises 2460 SW 85 Terrace Davie FL 33324 Allow 4-6 weeks delivery Sorry cannot deliver post office boxes MA February 1988 129 WORLD CLASS tA Retr *6 Tony Frackowiaks Challenge IV Kit Atlanta KitDash Kit Hattori Headers Pipes AMA&FAIRC Aerobatic Specialties PO Box 388914-248-8603 Lincoindale NY 10540 Send $100 catalog FIBERGLASS PARTS Over 237 cowls kit scratch built models Also over 34 round cowls ranging 4 14-718 diameter 55 duff size & shape wheel pants custom Make Parts Vacuum Form Canopies Pining send $1 unqist kt TAD FIBERILASS SPECIALTIES 30925 nlock Dept 4 Garden city Ml 48135 PHONE 313421-6358 BRAZED & HEAI-TREAIED WIRE GEARS & CABANES PHONE 313 261-9064