George M Myer _________________________ Radio technique VARIETY key word months column Ive got bunch short- mediumlength subjects time start off March 1987 column tacho meters prompted Dr James Scheiman Hamp ton VA write Nor-Cal Avionics Cali fornia attempt purchase Accutach II got postcard back labeled Return sender prompted him send request new address MAs pub lisher Carl Wheeley came up telephone number called got talk answering machine Shortly afterward Len Horan called back explain Nor-Cal now Division A-B Tech 5689 Glasgow Troy MI 48098 pleasant conversation during Len explained Accutach II continuing production along other interesting de vices gadget seems useful Accu tach bracket permits attach Accutach Helicopter tail boom Since Accutach II has large display permits pilot hover chopper read main rotor rpm Next April column also caught some atten tion gave examples systems knew 1991-compatible both receiver transmitter narrow-band immediately began receiv ing letters asking didnt mention brand favor column gave examples low-priced RC system Acoms FM medium-priced system Futaba Conquest PCM high-priced system Circus PCM-9 ABS receiver two receivers can purchased separately Kraft KPR-8FD Airtronics 92245 point trying make 1991compatible systems available price range have look list 1991-compatible systems neither inclusive nor exclusive another example 1976 FutabaContest7 AM transmitterhas less energy sidebands narrower-band other AM FM FM/PCM RC transmitter have seen tested Youd better read end last sentence again Futabas matching metal-cased dualconversion receiver about good AM receiver can 1970 Proline Competition Six metal cased AM receiver narrow-band other AM receiver its 31M third-order intermodulation AM noise rejection still superior other AM receiver Ive seen tested just think want list recom mended equipmentwhat really want know pick good ones Since lathe year will send old even-frequency 72080BRN/W 721 60BLUIW 72240REDIW 72320PURIW 72400ORGIW 75640GRNIW RC systems home crystal-swap RC38140142144146148150152/54 156 seems like checkilet would good Idea service station cant read mind sometimes has trouble handwriting too Hoping helpful offer following memory-joggers old frequencies will illegal use after December 20 1987 [v32][b-1-10-1-10]] PRINT OR TYPE ALL ENTRIES Inum Isabdic nnee neededl Arty SIre elI state apaflnrent no-I ZIP codel etoth TO Service Come MANUFACTURERS NAMP wz Z 2 SC ADDRESS 1011 L3 CII 0 5 Irz 52 no berl Icityl Street slate suite ZIP codel enle name person agreed wbrk [v32][b-1-10-1-10]] TRANSMITTER Itealtelmodelserial eel Sethices needed CROSS OUT SERVICES NOT WANTED 1 INSTALL NARROW-BAND OPTION 2 Replace crystal retune channel RC 3 Replace batteries 4 Repair totlowing coetrols ELEVATOR AILERON RUDDER THROTTLE FLAPS GEAR AUX AUS ADS S Repair lollammog accessories CHARGING JACK SWITCH METER SLOW ROLL SW TRAINER BUTTON REVERSING SWITCH 1 2 3 4 5 DUAL-RATE SWITCH E SPIN SUTTON B Other sersices needed list RECEIVER Makel IModell 1 REPLACE RECEIVER WITH __________________ ON CHANNEL RC ________ modeldowser 2 Enceange crystal channel BC ________ 3 RETUNE RECEIVER TO MATCH TRANSMITTER 4 Repait Connections ANTENNA BATTERY SERVO 1 2 3 4 5 5 7 5 9 S Other sencices list SERVOS TAG NUMBER Make ModOl CHECK PROBLEMS REPAIRS NEEDED PLUGCRACKEDNOISYSERVO CABLECASEMOTORJITTERS DEAD SERVO ACCTS NEEDED 2 3 4 S B B B IS BATTERY PACK -loshect Test Replace necessary SWITCH HARNESS -lospect Test ned replace necessary BATTERY CHARGER -Inspect Test Replace necessary OTHER ACCESSORIES List Sersice Iostrsctionsl WILL PATCHECK ENCLOSED MASTERCHARGEVISA OTHERCARD # ____________________ EAP RETURN VIA FED EAP BLUE LABEL BROWN LABEL Other ____________________________________________________________[v32][b220828729200]] aeos*coocacecoccencccsaoeoescn*eneCeeeaeocneeeeOeoaO**soocn[v32][b23402892141324570]] 38 Model Aviation ONAME Vt ADDRESS z TELEPHONE ____ ___________________ hoerel eI WE ARE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY Satisfaction Guaranteed Direct Only BALSA SHEETS 36 48 30 BALSA STICKS 1/162331/161/4 3/322401/16318 1/8 2431/161/2 3/18r2493/321/4 1/4 2563/323/8 1/323373/321/2 1/203371/81/8 1/1633749311/01/4 3/3234458371/83/8 1/8 35471451/61/2 3/1836282553/183/16 1/4 37395913/183/8 5/183893/181/2 3/8 388124711/41/4 1/2 31101551/43/0 3/4 n31681/41/2 1/1845878481/43/4 3/3247094581/41 1/8 n480106865/165/16 3/16493122753/03/8 1/4 4110134843/81/2 3/8 41852253/83/4 1/2 42252813/81 1/21/2 MATCHED SHEETS 421/23/4 3/3241001/21 1/04108so 3/164120~ 1/44131 36 48 00 10 14 10 12 16 06 1118 1218 1424 1116 17 2230 1624 1926 2130 3444 40 2128 2737 3246 4255 52 3053 4662 58 48 47 OALSA HOT LINE Call 806 745-6394 10mm -6pm Control limo LONE STAR MODELS 1623 57th St Lubbock TX 79412 v3AI CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% serious modeler want performance must try 4-6 lb balsa LIGHT 4-6 LB WOOD36 1/32349 1/20349 1/16340 3/32358 1/6367 3/16376 1/4300 3/63115 1/23129 3/43220 13300 1/16470 3/32491 1/84100 3/164117 1/44138 3/84207 BALSA TRIAHGLES 36 4425 3/83830 2235 43445 55 BALSA PLANKS 36 85 250 3200 4280 11/23275 11/24300 22225 23325 24435 33495 346801/24282 TAPERED SHEETS 36 1/4265TRAILING EDGE36 1/436514132 3/82685141 1/439 3/83903/61 1/246 1/231201/2270 LONE STAR EPOXY 9,LatOtS S,598 15,586 30 ein598 INSTANT GLUE 1 Th/ck298 1 , Th/n298 2z Thek550 2, Thin500 BASSWOOD 3/163/16 3/16 1/4 3/163/8 3/16 1/2 3/163/4 1/4 1/4 1/43/8 1/43/4 3/8 3/8 3/81/2 3/8 3/4 1/21/2 1/23/4 48 26 30 36 48 80 42 49 80 80 70 90 80 100 BUNDLE DEALS 201/6336685 201/164361020 203/32336840 153/32 436955 151/6336715 101/6436675 153/16336900 103/16436810 101/4336630 101/4436880 10-3/8336600 53/8436025 51/2336540 51/2436855 103/32448845 51/8448480 53/16448585 51/4448625 PINE STICKS 36 48 1/81/81317 1/81/41623 1/83/82027 3/163/161724/ 3163/62332 3161/23040 1/41/42637 1/43/63042I 1/41/23447 3/63/63752 SPRUCE STICKS 36 48 1/81/815 1/81/41824 1/83/82029 3/163/162534 1/41/43145 1/43/83658 3/83/84563 3/81/25570 1/21/28080 1/22/46880 SPRUCE TRIANGLES 3/83/8 1/2 1/2 3/43/4 36 45 81 77 LITE PLY 48 1/80150 1/612 380 HARD MAPLE 1/43/8 3/8 3/8 3/81/2 3/83/4 1/2 3/4 BIRCH DOWELS 1/8 3/10 1/4 5/16 3/0 15 40 45 54 58 68 36 00 11 14 25 32 3PLYSIRCH48 1/6412525 1/3212425 1/1612435 1/812400 SPLYBIECH48 3/3212570 1/012585 3/1612585 1/412600 GROOVED LG MOUNTS 12 IocI08 3/83/4/1/8/ 00 3/83/4/5/32/40 1/23/4/3/16/45 Handling ChargeS300 pay UPS Add *200 COD $300 extra PP APO FPO accept Visa Maste Card personal chocks COD 4-1/0% lan nTeas US carrency Minim, Order 01000 V. P11 bet didnt realize transmitters already narrow-band Gold Star transmitter-testing done AMA some trade shows has revealed although 25% 35% transmitters service arent narrowband enough other 70% transmitters OK need filter out rejects can add narrow-band receivers goQd transmitters go flying greater confidence less interference Unfortunately having narrow-band trans mitter solves half problem receiver must narrow-banded also will listen its control transmitter no others April issue mentioned two receivers could used replacements expect others areor soon will beavall able too Creation AMA Consumers Test Lab has suggested times AMA Fre quency Committee meetings dont think much idea reason RC systems built batches vary quality batch batch AMA could identify test sample batch dont think lab would have enough work justify paying full-time staff has suggested could get $100000 worth equipment needed set up AMA test lab adding another dollar yearly fee hoping would onetime assessment Are ready well have find member would volunteer perform tests whenever testable RC systems become available AMA already has lawyer retainer would available fight off lawsuits would inevitably arise such operation AMA goes self-insured get away ruinous insurance premiums well have make sure cover frequency-lab volunteer adequately Consider number RC manufacturers small Three companies Airtronics Circus Hobbies Futaba account equipment sold today often bring out new system Most what see consists old circuits new packages sometimes tiny change like adding changing few components board makes important improvements performance iden tify better package Next consider advertising usually beats equipment favorite vendors shop much six months Either AMA would have settle testing prototypes would have walt production batches llve publishing cycle magazine present information now March 10 1987 am late typing column June 1987 issue ModelAviation can easily see AMA phone lines could tied up phone calls prospective purchasers new RC systems asking questions couldnt answered FCC Federal Communications Com mission gets just part-time employee its Type Acceptance lab deal lot just RC systems get off easily manufacturers tests submit reports main thing FCC does review reports ascertaln correct procedures followed like fashion Radio Control Manufac turers Association RCMA considering feasibility setting up its own lab industry dont think will happen though So use commercial lab Thats being considered above problems will apply commercial lab well Continued page 144 20 TO 45 ENGINES WING SPAN 55 RADIO CONTROL SHORT KIT AMERICAN P40 Tomahawk 2995 FLIES LIKE DREAM WITH PLENIY OF WING AND TAIL AREA FOR FULL-RANGE POSITIVE CONTROL DESIGNED WITH FOAM WING AND BOX FRAME FUSELAGE FOR SIMPLE AND STURDY CONSTRUCTION WE FURNISH THE ESSENTIAL PARTS ALONG WITH EASY-TO-FOLLOW PLANS AND LU THE BUILDER SELECT HIS OWN WOOD AND ADDITIONAL HARDWARE SHORT KIT INCLUDES PRECISION CUT ARCOFOAM WING CORES ABS HIGH-IMPACT COWLING FORMED WING GUN PORTS AND EXHAUST CRYSTAL CLEAR CANOPY WITH FRAMEWORK PLYWOOD FIREWALL LANDING GEAR STRAPS BLOCKS AND SCREWS FORMED STEEL ENGINE MOUNT CONTROL SURFACE HINGES CLEAR PLANS WITH CONSTRUCTION DETAILS AND ALL NECESSARY TEMPLATES BILL OF MATERIALS NO BALSA INCLUDED ORDERING SEND CHECK OR MONEY ORDER FOR 2995 PLUS 450 POSTAGE CANADIANS ADO 650 TO WING MFG_ PO BOX 33 CRYSTAL LAKE IL 60014 ILLINOIS RESIDENTS ADO 5/% SALES TAX ALL ORDERS MUST BE IN US FUNDS SEND 350 FOR PRODUCT CATALOG DESCRIBING OUR COMPLETE LINE OF FOAM CORE REPLACEMENT WINGS ACCESSORIES KITS TOOLS AND MUCH MORE CATALOG FREE WITH OROER J%f44 MFGPHONE 8154590417 June1987 39 THE LEADER IN COMPETITION PROPELLERS NEW 4 CYCLE ES 100 THP DESIGN ORED HELICAL PITCH DEVELOPEDTO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALITHE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW DIAPITCH THP 1286778 136778 148778 1567 16678 NEW ii PRICE 299 379 479 689 989 PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10T020/oINCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534149 634149 72833456179 8334568189 845667199 9458677199 1045667209 106W8W209 106EW219 114677778229 115W229 116EW239 1167239 124W279 125W279 1256279 P1356349 1456459 1556859 164N969 16678989 j RC PYLON RACING SERIES 500 DIAPITCHPRICE 7SN 5N279 86778299 SERIES 400C 866777/289 9777289 W WIDE BLADE EW EXTRA WIDE IU NAARAW 1987 Cobra 400 Twin Complete WItfl Hub 4Spring Starter CID Gas & Oilngine $25000 ial Mount$2000yiition Unit$8995Limited Price Exh Stacks$1495Spark Adv$6995 Visa Master Card COD Add 5% Send $200 Catalog Homer Sales Inc 300 Dixie Hwy Beecher IL 60401 F1hone 312 946-2515 Double Duty/Randolph Continued page 34 method turning DoubleDuty good gentle advanced trainer Most flight characteristics remain same slightly smaller wing stability almost like Free Flight model somewhat reduced use less dihedral aileron-equipped wing Roll response very smooth would expected course elevator throttle responses remain same Transition three-channel sys tem full-house arrangement really easy sweaty hands time reduced first few minutes first flight Confidence first thing required comfortable flyingand airplane confidence builder Construction wing uses same airfoil method construction original tip-dihedraled wing addition ailerons hardware about different lets start point two panels complete readr joined plywood di hedral braces Notice two center ribsone panelare cut half main spar two nose ribs joined back half ribs form sides well will hold aileron servo front well main spar back scrap V16 sheet balsa trimmed fit between ribs Join wing panels dihedral braces before adding center ribs front bottom spar top trailing edge sheet center section sheeted just original wing top servo well left open Add -in sheet tips before ailerons Y16 x -in stock tapered A6 trailing edge Stock can purchased sanded shape Glue 2-in pieces aileron stock trailing edge betweenthe lasttwo ribs Sandtoblendinto tips aileron torque rods made slipping brass tube over 3/az music wire bending wire shape shown Note left right Mark location torque rod arms trailing edge relieve trailing edge locations piece rolled-up sandpaper give arms free movement Glue brass tubing place trailing edge careful get glue tubes check proper locationthat left left side etc Hold ailerons against torque rods drill leading edges match barbs end rods Slightly hollow out leading edges holes inboard allow torque rods seat thus close gap between ailerons wing After ailerons wing covered mount ailerons using epoxy secure torque rods Mount servo plywood tray glued scrap balsa risers both ends servo well Standard aileron hardware used connect aileron horns servo Plug servo receiver check proper movement Carefully sight along wing warps correct might have crept during covering wing should fit perfectly saddle fuselage trim trailing edge saddie until does Good flying Radio Technique/Myers Continued page 39 Another subject AMA has continuing effort collect type acceptance data FCC soon piece equipment qualifies hasnt roaring success have some old type acceptances Ace RIG Inc Silver Seven data newer 1980 far know idea information will stored AMA HQ made available Contest Directors others purpose identi fring narrow-band transmitter designs people doing contest-entrant transmitter proc essing will print information soon get ff1 get George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 responding advertisers mention read about Model Avi ation 144 Model Aviation
Edition: Model Aviation - 1987/06
Page Numbers: 38, 39, 144
George M Myer _________________________ Radio technique VARIETY key word months column Ive got bunch short- mediumlength subjects time start off March 1987 column tacho meters prompted Dr James Scheiman Hamp ton VA write Nor-Cal Avionics Cali fornia attempt purchase Accutach II got postcard back labeled Return sender prompted him send request new address MAs pub lisher Carl Wheeley came up telephone number called got talk answering machine Shortly afterward Len Horan called back explain Nor-Cal now Division A-B Tech 5689 Glasgow Troy MI 48098 pleasant conversation during Len explained Accutach II continuing production along other interesting de vices gadget seems useful Accu tach bracket permits attach Accutach Helicopter tail boom Since Accutach II has large display permits pilot hover chopper read main rotor rpm Next April column also caught some atten tion gave examples systems knew 1991-compatible both receiver transmitter narrow-band immediately began receiv ing letters asking didnt mention brand favor column gave examples low-priced RC system Acoms FM medium-priced system Futaba Conquest PCM high-priced system Circus PCM-9 ABS receiver two receivers can purchased separately Kraft KPR-8FD Airtronics 92245 point trying make 1991compatible systems available price range have look list 1991-compatible systems neither inclusive nor exclusive another example 1976 FutabaContest7 AM transmitterhas less energy sidebands narrower-band other AM FM FM/PCM RC transmitter have seen tested Youd better read end last sentence again Futabas matching metal-cased dualconversion receiver about good AM receiver can 1970 Proline Competition Six metal cased AM receiver narrow-band other AM receiver its 31M third-order intermodulation AM noise rejection still superior other AM receiver Ive seen tested just think want list recom mended equipmentwhat really want know pick good ones Since lathe year will send old even-frequency 72080BRN/W 721 60BLUIW 72240REDIW 72320PURIW 72400ORGIW 75640GRNIW RC systems home crystal-swap RC38140142144146148150152/54 156 seems like checkilet would good Idea service station cant read mind sometimes has trouble handwriting too Hoping helpful offer following memory-joggers old frequencies will illegal use after December 20 1987 [v32][b-1-10-1-10]] PRINT OR TYPE ALL ENTRIES Inum Isabdic nnee neededl Arty SIre elI state apaflnrent no-I ZIP codel etoth TO Service Come MANUFACTURERS NAMP wz Z 2 SC ADDRESS 1011 L3 CII 0 5 Irz 52 no berl Icityl Street slate suite ZIP codel enle name person agreed wbrk [v32][b-1-10-1-10]] TRANSMITTER Itealtelmodelserial eel Sethices needed CROSS OUT SERVICES NOT WANTED 1 INSTALL NARROW-BAND OPTION 2 Replace crystal retune channel RC 3 Replace batteries 4 Repair totlowing coetrols ELEVATOR AILERON RUDDER THROTTLE FLAPS GEAR AUX AUS ADS S Repair lollammog accessories CHARGING JACK SWITCH METER SLOW ROLL SW TRAINER BUTTON REVERSING SWITCH 1 2 3 4 5 DUAL-RATE SWITCH E SPIN SUTTON B Other sersices needed list RECEIVER Makel IModell 1 REPLACE RECEIVER WITH __________________ ON CHANNEL RC ________ modeldowser 2 Enceange crystal channel BC ________ 3 RETUNE RECEIVER TO MATCH TRANSMITTER 4 Repait Connections ANTENNA BATTERY SERVO 1 2 3 4 5 5 7 5 9 S Other sencices list SERVOS TAG NUMBER Make ModOl CHECK PROBLEMS REPAIRS NEEDED PLUGCRACKEDNOISYSERVO CABLECASEMOTORJITTERS DEAD SERVO ACCTS NEEDED 2 3 4 S B B B IS BATTERY PACK -loshect Test Replace necessary SWITCH HARNESS -lospect Test ned replace necessary BATTERY CHARGER -Inspect Test Replace necessary OTHER ACCESSORIES List Sersice Iostrsctionsl WILL PATCHECK ENCLOSED MASTERCHARGEVISA OTHERCARD # ____________________ EAP RETURN VIA FED EAP BLUE LABEL BROWN LABEL Other ____________________________________________________________[v32][b220828729200]] aeos*coocacecoccencccsaoeoescn*eneCeeeaeocneeeeOeoaO**soocn[v32][b23402892141324570]] 38 Model Aviation ONAME Vt ADDRESS z TELEPHONE ____ ___________________ hoerel eI WE ARE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY Satisfaction Guaranteed Direct Only BALSA SHEETS 36 48 30 BALSA STICKS 1/162331/161/4 3/322401/16318 1/8 2431/161/2 3/18r2493/321/4 1/4 2563/323/8 1/323373/321/2 1/203371/81/8 1/1633749311/01/4 3/3234458371/83/8 1/8 35471451/61/2 3/1836282553/183/16 1/4 37395913/183/8 5/183893/181/2 3/8 388124711/41/4 1/2 31101551/43/0 3/4 n31681/41/2 1/1845878481/43/4 3/3247094581/41 1/8 n480106865/165/16 3/16493122753/03/8 1/4 4110134843/81/2 3/8 41852253/83/4 1/2 42252813/81 1/21/2 MATCHED SHEETS 421/23/4 3/3241001/21 1/04108so 3/164120~ 1/44131 36 48 00 10 14 10 12 16 06 1118 1218 1424 1116 17 2230 1624 1926 2130 3444 40 2128 2737 3246 4255 52 3053 4662 58 48 47 OALSA HOT LINE Call 806 745-6394 10mm -6pm Control limo LONE STAR MODELS 1623 57th St Lubbock TX 79412 v3AI CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% serious modeler want performance must try 4-6 lb balsa LIGHT 4-6 LB WOOD36 1/32349 1/20349 1/16340 3/32358 1/6367 3/16376 1/4300 3/63115 1/23129 3/43220 13300 1/16470 3/32491 1/84100 3/164117 1/44138 3/84207 BALSA TRIAHGLES 36 4425 3/83830 2235 43445 55 BALSA PLANKS 36 85 250 3200 4280 11/23275 11/24300 22225 23325 24435 33495 346801/24282 TAPERED SHEETS 36 1/4265TRAILING EDGE36 1/436514132 3/82685141 1/439 3/83903/61 1/246 1/231201/2270 LONE STAR EPOXY 9,LatOtS S,598 15,586 30 ein598 INSTANT GLUE 1 Th/ck298 1 , Th/n298 2z Thek550 2, Thin500 BASSWOOD 3/163/16 3/16 1/4 3/163/8 3/16 1/2 3/163/4 1/4 1/4 1/43/8 1/43/4 3/8 3/8 3/81/2 3/8 3/4 1/21/2 1/23/4 48 26 30 36 48 80 42 49 80 80 70 90 80 100 BUNDLE DEALS 201/6336685 201/164361020 203/32336840 153/32 436955 151/6336715 101/6436675 153/16336900 103/16436810 101/4336630 101/4436880 10-3/8336600 53/8436025 51/2336540 51/2436855 103/32448845 51/8448480 53/16448585 51/4448625 PINE STICKS 36 48 1/81/81317 1/81/41623 1/83/82027 3/163/161724/ 3163/62332 3161/23040 1/41/42637 1/43/63042I 1/41/23447 3/63/63752 SPRUCE STICKS 36 48 1/81/815 1/81/41824 1/83/82029 3/163/162534 1/41/43145 1/43/83658 3/83/84563 3/81/25570 1/21/28080 1/22/46880 SPRUCE TRIANGLES 3/83/8 1/2 1/2 3/43/4 36 45 81 77 LITE PLY 48 1/80150 1/612 380 HARD MAPLE 1/43/8 3/8 3/8 3/81/2 3/83/4 1/2 3/4 BIRCH DOWELS 1/8 3/10 1/4 5/16 3/0 15 40 45 54 58 68 36 00 11 14 25 32 3PLYSIRCH48 1/6412525 1/3212425 1/1612435 1/812400 SPLYBIECH48 3/3212570 1/012585 3/1612585 1/412600 GROOVED LG MOUNTS 12 IocI08 3/83/4/1/8/ 00 3/83/4/5/32/40 1/23/4/3/16/45 Handling ChargeS300 pay UPS Add *200 COD $300 extra PP APO FPO accept Visa Maste Card personal chocks COD 4-1/0% lan nTeas US carrency Minim, Order 01000 V. P11 bet didnt realize transmitters already narrow-band Gold Star transmitter-testing done AMA some trade shows has revealed although 25% 35% transmitters service arent narrowband enough other 70% transmitters OK need filter out rejects can add narrow-band receivers goQd transmitters go flying greater confidence less interference Unfortunately having narrow-band trans mitter solves half problem receiver must narrow-banded also will listen its control transmitter no others April issue mentioned two receivers could used replacements expect others areor soon will beavall able too Creation AMA Consumers Test Lab has suggested times AMA Fre quency Committee meetings dont think much idea reason RC systems built batches vary quality batch batch AMA could identify test sample batch dont think lab would have enough work justify paying full-time staff has suggested could get $100000 worth equipment needed set up AMA test lab adding another dollar yearly fee hoping would onetime assessment Are ready well have find member would volunteer perform tests whenever testable RC systems become available AMA already has lawyer retainer would available fight off lawsuits would inevitably arise such operation AMA goes self-insured get away ruinous insurance premiums well have make sure cover frequency-lab volunteer adequately Consider number RC manufacturers small Three companies Airtronics Circus Hobbies Futaba account equipment sold today often bring out new system Most what see consists old circuits new packages sometimes tiny change like adding changing few components board makes important improvements performance iden tify better package Next consider advertising usually beats equipment favorite vendors shop much six months Either AMA would have settle testing prototypes would have walt production batches llve publishing cycle magazine present information now March 10 1987 am late typing column June 1987 issue ModelAviation can easily see AMA phone lines could tied up phone calls prospective purchasers new RC systems asking questions couldnt answered FCC Federal Communications Com mission gets just part-time employee its Type Acceptance lab deal lot just RC systems get off easily manufacturers tests submit reports main thing FCC does review reports ascertaln correct procedures followed like fashion Radio Control Manufac turers Association RCMA considering feasibility setting up its own lab industry dont think will happen though So use commercial lab Thats being considered above problems will apply commercial lab well Continued page 144 20 TO 45 ENGINES WING SPAN 55 RADIO CONTROL SHORT KIT AMERICAN P40 Tomahawk 2995 FLIES LIKE DREAM WITH PLENIY OF WING AND TAIL AREA FOR FULL-RANGE POSITIVE CONTROL DESIGNED WITH FOAM WING AND BOX FRAME FUSELAGE FOR SIMPLE AND STURDY CONSTRUCTION WE FURNISH THE ESSENTIAL PARTS ALONG WITH EASY-TO-FOLLOW PLANS AND LU THE BUILDER SELECT HIS OWN WOOD AND ADDITIONAL HARDWARE SHORT KIT INCLUDES PRECISION CUT ARCOFOAM WING CORES ABS HIGH-IMPACT COWLING FORMED WING GUN PORTS AND EXHAUST CRYSTAL CLEAR CANOPY WITH FRAMEWORK PLYWOOD FIREWALL LANDING GEAR STRAPS BLOCKS AND SCREWS FORMED STEEL ENGINE MOUNT CONTROL SURFACE HINGES CLEAR PLANS WITH CONSTRUCTION DETAILS AND ALL NECESSARY TEMPLATES BILL OF MATERIALS NO BALSA INCLUDED ORDERING SEND CHECK OR MONEY ORDER FOR 2995 PLUS 450 POSTAGE CANADIANS ADO 650 TO WING MFG_ PO BOX 33 CRYSTAL LAKE IL 60014 ILLINOIS RESIDENTS ADO 5/% SALES TAX ALL ORDERS MUST BE IN US FUNDS SEND 350 FOR PRODUCT CATALOG DESCRIBING OUR COMPLETE LINE OF FOAM CORE REPLACEMENT WINGS ACCESSORIES KITS TOOLS AND MUCH MORE CATALOG FREE WITH OROER J%f44 MFGPHONE 8154590417 June1987 39 THE LEADER IN COMPETITION PROPELLERS NEW 4 CYCLE ES 100 THP DESIGN ORED HELICAL PITCH DEVELOPEDTO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALITHE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW DIAPITCH THP 1286778 136778 148778 1567 16678 NEW ii PRICE 299 379 479 689 989 PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10T020/oINCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534149 634149 72833456179 8334568189 845667199 9458677199 1045667209 106W8W209 106EW219 114677778229 115W229 116EW239 1167239 124W279 125W279 1256279 P1356349 1456459 1556859 164N969 16678989 j RC PYLON RACING SERIES 500 DIAPITCHPRICE 7SN 5N279 86778299 SERIES 400C 866777/289 9777289 W WIDE BLADE EW EXTRA WIDE IU NAARAW 1987 Cobra 400 Twin Complete WItfl Hub 4Spring Starter CID Gas & Oilngine $25000 ial Mount$2000yiition Unit$8995Limited Price Exh Stacks$1495Spark Adv$6995 Visa Master Card COD Add 5% Send $200 Catalog Homer Sales Inc 300 Dixie Hwy Beecher IL 60401 F1hone 312 946-2515 Double Duty/Randolph Continued page 34 method turning DoubleDuty good gentle advanced trainer Most flight characteristics remain same slightly smaller wing stability almost like Free Flight model somewhat reduced use less dihedral aileron-equipped wing Roll response very smooth would expected course elevator throttle responses remain same Transition three-channel sys tem full-house arrangement really easy sweaty hands time reduced first few minutes first flight Confidence first thing required comfortable flyingand airplane confidence builder Construction wing uses same airfoil method construction original tip-dihedraled wing addition ailerons hardware about different lets start point two panels complete readr joined plywood di hedral braces Notice two center ribsone panelare cut half main spar two nose ribs joined back half ribs form sides well will hold aileron servo front well main spar back scrap V16 sheet balsa trimmed fit between ribs Join wing panels dihedral braces before adding center ribs front bottom spar top trailing edge sheet center section sheeted just original wing top servo well left open Add -in sheet tips before ailerons Y16 x -in stock tapered A6 trailing edge Stock can purchased sanded shape Glue 2-in pieces aileron stock trailing edge betweenthe lasttwo ribs Sandtoblendinto tips aileron torque rods made slipping brass tube over 3/az music wire bending wire shape shown Note left right Mark location torque rod arms trailing edge relieve trailing edge locations piece rolled-up sandpaper give arms free movement Glue brass tubing place trailing edge careful get glue tubes check proper locationthat left left side etc Hold ailerons against torque rods drill leading edges match barbs end rods Slightly hollow out leading edges holes inboard allow torque rods seat thus close gap between ailerons wing After ailerons wing covered mount ailerons using epoxy secure torque rods Mount servo plywood tray glued scrap balsa risers both ends servo well Standard aileron hardware used connect aileron horns servo Plug servo receiver check proper movement Carefully sight along wing warps correct might have crept during covering wing should fit perfectly saddle fuselage trim trailing edge saddie until does Good flying Radio Technique/Myers Continued page 39 Another subject AMA has continuing effort collect type acceptance data FCC soon piece equipment qualifies hasnt roaring success have some old type acceptances Ace RIG Inc Silver Seven data newer 1980 far know idea information will stored AMA HQ made available Contest Directors others purpose identi fring narrow-band transmitter designs people doing contest-entrant transmitter proc essing will print information soon get ff1 get George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 responding advertisers mention read about Model Avi ation 144 Model Aviation
Edition: Model Aviation - 1987/06
Page Numbers: 38, 39, 144
George M Myer _________________________ Radio technique VARIETY key word months column Ive got bunch short- mediumlength subjects time start off March 1987 column tacho meters prompted Dr James Scheiman Hamp ton VA write Nor-Cal Avionics Cali fornia attempt purchase Accutach II got postcard back labeled Return sender prompted him send request new address MAs pub lisher Carl Wheeley came up telephone number called got talk answering machine Shortly afterward Len Horan called back explain Nor-Cal now Division A-B Tech 5689 Glasgow Troy MI 48098 pleasant conversation during Len explained Accutach II continuing production along other interesting de vices gadget seems useful Accu tach bracket permits attach Accutach Helicopter tail boom Since Accutach II has large display permits pilot hover chopper read main rotor rpm Next April column also caught some atten tion gave examples systems knew 1991-compatible both receiver transmitter narrow-band immediately began receiv ing letters asking didnt mention brand favor column gave examples low-priced RC system Acoms FM medium-priced system Futaba Conquest PCM high-priced system Circus PCM-9 ABS receiver two receivers can purchased separately Kraft KPR-8FD Airtronics 92245 point trying make 1991compatible systems available price range have look list 1991-compatible systems neither inclusive nor exclusive another example 1976 FutabaContest7 AM transmitterhas less energy sidebands narrower-band other AM FM FM/PCM RC transmitter have seen tested Youd better read end last sentence again Futabas matching metal-cased dualconversion receiver about good AM receiver can 1970 Proline Competition Six metal cased AM receiver narrow-band other AM receiver its 31M third-order intermodulation AM noise rejection still superior other AM receiver Ive seen tested just think want list recom mended equipmentwhat really want know pick good ones Since lathe year will send old even-frequency 72080BRN/W 721 60BLUIW 72240REDIW 72320PURIW 72400ORGIW 75640GRNIW RC systems home crystal-swap RC38140142144146148150152/54 156 seems like checkilet would good Idea service station cant read mind sometimes has trouble handwriting too Hoping helpful offer following memory-joggers old frequencies will illegal use after December 20 1987 [v32][b-1-10-1-10]] PRINT OR TYPE ALL ENTRIES Inum Isabdic nnee neededl Arty SIre elI state apaflnrent no-I ZIP codel etoth TO Service Come MANUFACTURERS NAMP wz Z 2 SC ADDRESS 1011 L3 CII 0 5 Irz 52 no berl Icityl Street slate suite ZIP codel enle name person agreed wbrk [v32][b-1-10-1-10]] TRANSMITTER Itealtelmodelserial eel Sethices needed CROSS OUT SERVICES NOT WANTED 1 INSTALL NARROW-BAND OPTION 2 Replace crystal retune channel RC 3 Replace batteries 4 Repair totlowing coetrols ELEVATOR AILERON RUDDER THROTTLE FLAPS GEAR AUX AUS ADS S Repair lollammog accessories CHARGING JACK SWITCH METER SLOW ROLL SW TRAINER BUTTON REVERSING SWITCH 1 2 3 4 5 DUAL-RATE SWITCH E SPIN SUTTON B Other sersices needed list RECEIVER Makel IModell 1 REPLACE RECEIVER WITH __________________ ON CHANNEL RC ________ modeldowser 2 Enceange crystal channel BC ________ 3 RETUNE RECEIVER TO MATCH TRANSMITTER 4 Repait Connections ANTENNA BATTERY SERVO 1 2 3 4 5 5 7 5 9 S Other sencices list SERVOS TAG NUMBER Make ModOl CHECK PROBLEMS REPAIRS NEEDED PLUGCRACKEDNOISYSERVO CABLECASEMOTORJITTERS DEAD SERVO ACCTS NEEDED 2 3 4 S B B B IS BATTERY PACK -loshect Test Replace necessary SWITCH HARNESS -lospect Test ned replace necessary BATTERY CHARGER -Inspect Test Replace necessary OTHER ACCESSORIES List Sersice Iostrsctionsl WILL PATCHECK ENCLOSED MASTERCHARGEVISA OTHERCARD # ____________________ EAP RETURN VIA FED EAP BLUE LABEL BROWN LABEL Other ____________________________________________________________[v32][b220828729200]] aeos*coocacecoccencccsaoeoescn*eneCeeeaeocneeeeOeoaO**soocn[v32][b23402892141324570]] 38 Model Aviation ONAME Vt ADDRESS z TELEPHONE ____ ___________________ hoerel eI WE ARE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY Satisfaction Guaranteed Direct Only BALSA SHEETS 36 48 30 BALSA STICKS 1/162331/161/4 3/322401/16318 1/8 2431/161/2 3/18r2493/321/4 1/4 2563/323/8 1/323373/321/2 1/203371/81/8 1/1633749311/01/4 3/3234458371/83/8 1/8 35471451/61/2 3/1836282553/183/16 1/4 37395913/183/8 5/183893/181/2 3/8 388124711/41/4 1/2 31101551/43/0 3/4 n31681/41/2 1/1845878481/43/4 3/3247094581/41 1/8 n480106865/165/16 3/16493122753/03/8 1/4 4110134843/81/2 3/8 41852253/83/4 1/2 42252813/81 1/21/2 MATCHED SHEETS 421/23/4 3/3241001/21 1/04108so 3/164120~ 1/44131 36 48 00 10 14 10 12 16 06 1118 1218 1424 1116 17 2230 1624 1926 2130 3444 40 2128 2737 3246 4255 52 3053 4662 58 48 47 OALSA HOT LINE Call 806 745-6394 10mm -6pm Control limo LONE STAR MODELS 1623 57th St Lubbock TX 79412 v3AI CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% serious modeler want performance must try 4-6 lb balsa LIGHT 4-6 LB WOOD36 1/32349 1/20349 1/16340 3/32358 1/6367 3/16376 1/4300 3/63115 1/23129 3/43220 13300 1/16470 3/32491 1/84100 3/164117 1/44138 3/84207 BALSA TRIAHGLES 36 4425 3/83830 2235 43445 55 BALSA PLANKS 36 85 250 3200 4280 11/23275 11/24300 22225 23325 24435 33495 346801/24282 TAPERED SHEETS 36 1/4265TRAILING EDGE36 1/436514132 3/82685141 1/439 3/83903/61 1/246 1/231201/2270 LONE STAR EPOXY 9,LatOtS S,598 15,586 30 ein598 INSTANT GLUE 1 Th/ck298 1 , Th/n298 2z Thek550 2, Thin500 BASSWOOD 3/163/16 3/16 1/4 3/163/8 3/16 1/2 3/163/4 1/4 1/4 1/43/8 1/43/4 3/8 3/8 3/81/2 3/8 3/4 1/21/2 1/23/4 48 26 30 36 48 80 42 49 80 80 70 90 80 100 BUNDLE DEALS 201/6336685 201/164361020 203/32336840 153/32 436955 151/6336715 101/6436675 153/16336900 103/16436810 101/4336630 101/4436880 10-3/8336600 53/8436025 51/2336540 51/2436855 103/32448845 51/8448480 53/16448585 51/4448625 PINE STICKS 36 48 1/81/81317 1/81/41623 1/83/82027 3/163/161724/ 3163/62332 3161/23040 1/41/42637 1/43/63042I 1/41/23447 3/63/63752 SPRUCE STICKS 36 48 1/81/815 1/81/41824 1/83/82029 3/163/162534 1/41/43145 1/43/83658 3/83/84563 3/81/25570 1/21/28080 1/22/46880 SPRUCE TRIANGLES 3/83/8 1/2 1/2 3/43/4 36 45 81 77 LITE PLY 48 1/80150 1/612 380 HARD MAPLE 1/43/8 3/8 3/8 3/81/2 3/83/4 1/2 3/4 BIRCH DOWELS 1/8 3/10 1/4 5/16 3/0 15 40 45 54 58 68 36 00 11 14 25 32 3PLYSIRCH48 1/6412525 1/3212425 1/1612435 1/812400 SPLYBIECH48 3/3212570 1/012585 3/1612585 1/412600 GROOVED LG MOUNTS 12 IocI08 3/83/4/1/8/ 00 3/83/4/5/32/40 1/23/4/3/16/45 Handling ChargeS300 pay UPS Add *200 COD $300 extra PP APO FPO accept Visa Maste Card personal chocks COD 4-1/0% lan nTeas US carrency Minim, Order 01000 V. P11 bet didnt realize transmitters already narrow-band Gold Star transmitter-testing done AMA some trade shows has revealed although 25% 35% transmitters service arent narrowband enough other 70% transmitters OK need filter out rejects can add narrow-band receivers goQd transmitters go flying greater confidence less interference Unfortunately having narrow-band trans mitter solves half problem receiver must narrow-banded also will listen its control transmitter no others April issue mentioned two receivers could used replacements expect others areor soon will beavall able too Creation AMA Consumers Test Lab has suggested times AMA Fre quency Committee meetings dont think much idea reason RC systems built batches vary quality batch batch AMA could identify test sample batch dont think lab would have enough work justify paying full-time staff has suggested could get $100000 worth equipment needed set up AMA test lab adding another dollar yearly fee hoping would onetime assessment Are ready well have find member would volunteer perform tests whenever testable RC systems become available AMA already has lawyer retainer would available fight off lawsuits would inevitably arise such operation AMA goes self-insured get away ruinous insurance premiums well have make sure cover frequency-lab volunteer adequately Consider number RC manufacturers small Three companies Airtronics Circus Hobbies Futaba account equipment sold today often bring out new system Most what see consists old circuits new packages sometimes tiny change like adding changing few components board makes important improvements performance iden tify better package Next consider advertising usually beats equipment favorite vendors shop much six months Either AMA would have settle testing prototypes would have walt production batches llve publishing cycle magazine present information now March 10 1987 am late typing column June 1987 issue ModelAviation can easily see AMA phone lines could tied up phone calls prospective purchasers new RC systems asking questions couldnt answered FCC Federal Communications Com mission gets just part-time employee its Type Acceptance lab deal lot just RC systems get off easily manufacturers tests submit reports main thing FCC does review reports ascertaln correct procedures followed like fashion Radio Control Manufac turers Association RCMA considering feasibility setting up its own lab industry dont think will happen though So use commercial lab Thats being considered above problems will apply commercial lab well Continued page 144 20 TO 45 ENGINES WING SPAN 55 RADIO CONTROL SHORT KIT AMERICAN P40 Tomahawk 2995 FLIES LIKE DREAM WITH PLENIY OF WING AND TAIL AREA FOR FULL-RANGE POSITIVE CONTROL DESIGNED WITH FOAM WING AND BOX FRAME FUSELAGE FOR SIMPLE AND STURDY CONSTRUCTION WE FURNISH THE ESSENTIAL PARTS ALONG WITH EASY-TO-FOLLOW PLANS AND LU THE BUILDER SELECT HIS OWN WOOD AND ADDITIONAL HARDWARE SHORT KIT INCLUDES PRECISION CUT ARCOFOAM WING CORES ABS HIGH-IMPACT COWLING FORMED WING GUN PORTS AND EXHAUST CRYSTAL CLEAR CANOPY WITH FRAMEWORK PLYWOOD FIREWALL LANDING GEAR STRAPS BLOCKS AND SCREWS FORMED STEEL ENGINE MOUNT CONTROL SURFACE HINGES CLEAR PLANS WITH CONSTRUCTION DETAILS AND ALL NECESSARY TEMPLATES BILL OF MATERIALS NO BALSA INCLUDED ORDERING SEND CHECK OR MONEY ORDER FOR 2995 PLUS 450 POSTAGE CANADIANS ADO 650 TO WING MFG_ PO BOX 33 CRYSTAL LAKE IL 60014 ILLINOIS RESIDENTS ADO 5/% SALES TAX ALL ORDERS MUST BE IN US FUNDS SEND 350 FOR PRODUCT CATALOG DESCRIBING OUR COMPLETE LINE OF FOAM CORE REPLACEMENT WINGS ACCESSORIES KITS TOOLS AND MUCH MORE CATALOG FREE WITH OROER J%f44 MFGPHONE 8154590417 June1987 39 THE LEADER IN COMPETITION PROPELLERS NEW 4 CYCLE ES 100 THP DESIGN ORED HELICAL PITCH DEVELOPEDTO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALITHE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW DIAPITCH THP 1286778 136778 148778 1567 16678 NEW ii PRICE 299 379 479 689 989 PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10T020/oINCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534149 634149 72833456179 8334568189 845667199 9458677199 1045667209 106W8W209 106EW219 114677778229 115W229 116EW239 1167239 124W279 125W279 1256279 P1356349 1456459 1556859 164N969 16678989 j RC PYLON RACING SERIES 500 DIAPITCHPRICE 7SN 5N279 86778299 SERIES 400C 866777/289 9777289 W WIDE BLADE EW EXTRA WIDE IU NAARAW 1987 Cobra 400 Twin Complete WItfl Hub 4Spring Starter CID Gas & Oilngine $25000 ial Mount$2000yiition Unit$8995Limited Price Exh Stacks$1495Spark Adv$6995 Visa Master Card COD Add 5% Send $200 Catalog Homer Sales Inc 300 Dixie Hwy Beecher IL 60401 F1hone 312 946-2515 Double Duty/Randolph Continued page 34 method turning DoubleDuty good gentle advanced trainer Most flight characteristics remain same slightly smaller wing stability almost like Free Flight model somewhat reduced use less dihedral aileron-equipped wing Roll response very smooth would expected course elevator throttle responses remain same Transition three-channel sys tem full-house arrangement really easy sweaty hands time reduced first few minutes first flight Confidence first thing required comfortable flyingand airplane confidence builder Construction wing uses same airfoil method construction original tip-dihedraled wing addition ailerons hardware about different lets start point two panels complete readr joined plywood di hedral braces Notice two center ribsone panelare cut half main spar two nose ribs joined back half ribs form sides well will hold aileron servo front well main spar back scrap V16 sheet balsa trimmed fit between ribs Join wing panels dihedral braces before adding center ribs front bottom spar top trailing edge sheet center section sheeted just original wing top servo well left open Add -in sheet tips before ailerons Y16 x -in stock tapered A6 trailing edge Stock can purchased sanded shape Glue 2-in pieces aileron stock trailing edge betweenthe lasttwo ribs Sandtoblendinto tips aileron torque rods made slipping brass tube over 3/az music wire bending wire shape shown Note left right Mark location torque rod arms trailing edge relieve trailing edge locations piece rolled-up sandpaper give arms free movement Glue brass tubing place trailing edge careful get glue tubes check proper locationthat left left side etc Hold ailerons against torque rods drill leading edges match barbs end rods Slightly hollow out leading edges holes inboard allow torque rods seat thus close gap between ailerons wing After ailerons wing covered mount ailerons using epoxy secure torque rods Mount servo plywood tray glued scrap balsa risers both ends servo well Standard aileron hardware used connect aileron horns servo Plug servo receiver check proper movement Carefully sight along wing warps correct might have crept during covering wing should fit perfectly saddle fuselage trim trailing edge saddie until does Good flying Radio Technique/Myers Continued page 39 Another subject AMA has continuing effort collect type acceptance data FCC soon piece equipment qualifies hasnt roaring success have some old type acceptances Ace RIG Inc Silver Seven data newer 1980 far know idea information will stored AMA HQ made available Contest Directors others purpose identi fring narrow-band transmitter designs people doing contest-entrant transmitter proc essing will print information soon get ff1 get George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 responding advertisers mention read about Model Avi ation 144 Model Aviation