George M Myers Radio Thchnique 70 FmeIIld Farm Rd Hkksville NY 11801 ABSTRACT XMAS gift tools Narrow-banding 75 MHz vs XTAL-swapping XMAS GIFTS issue should come about last stages XMAS buying frenzy Some following ideas may differ ent enough help pick gift person whos hard buy Portable power tool kit Wen Power Tool Task Force Model 2336 comes handy plas tic briefcase contains four 12 VDC tools jigsaw -in drill motor 14000-rpm grinder 25-watt soldering iron accessories 12 VDC 2-amp power supply plugs 110 VAC household current tools will operate cigar lighter socket car cigar-lighter plug provided added two such plugs Radio Shack plus 1-to-2 cigar socket multiplier provides plug two sockets power supply bought $89 discount marine supplies store should able find hobby store point Im going throw away Dremel other tools think will enjoy having little package van drive 100 miles go flying never knows what kind repairs will needed distance does Besides smaller-size tools especially jigsaw very handy around models portable tools Sears reciprocating-saw blade Super Finish #928761 can made fit neatly X-Acto #1 handle just little grinding Dremel cut off wheel Its just thing need cut slot inside built-up airplane clean out existing holes midnight desperation moves tumed out well Im sharing belt-loop tool holster Brookstone #7-13061 Peterborough NH other places $1095 holds Magna-Lite flashlight Swiss Army knife sharpening stick ball-point pen 45-in Channel-lock pliers added snap cover protect flashlight keep turn34 Model Aviation Georges Grumman SA-16B lookalike actually Lanier RC Sea Bird disguise Ko dak disc camera aboard will Georges eye-in-the-sky forthcoming trip Alaska Wen Mfg Task Force set small 12volt power tools travel case Power car battery household 110volt plug converter supplied Transmitter battery pack bottom SR Bat teries new replacement pack featuring 750mAh cells Thats 50% capacity no increase physical size First Need backpackers water filtering unit will go George Alaska case cant find distilled water servicing flight boxs starter battery Myers uses slightly modified belt-loop tool holster Brookstone keep selection vital small tools hand Sears Super Finish sabre-saw blade will fit X-Acto handle mounting tab ground down tad Lots uses ing itself whenever brush up against some thing item saves pocket holes thigh bruises Ive met number people say ad mire Swiss Army knife tools con tains would never carry because lump makes pocket holster keeps knife other tools small package shop field looks silly first soon get used having everything ready hand understanding created Emergency Medical Service techni cians load flashlight ball-point pen scissors makes nice stocking stuffer dont think So tools go High-capacity transmitter battery pack needed new battery pack Airtronics CS 5H transmitter called friend Larry Srib nick SR batteries Larry sent 5R750 transmitter pack exactly same size original Sanyo AA 500-mAh pack has 50% capacity dont have resort ex temal pack get extra capacity transmitter SR will make cells flight packs because cells sensitive vibration other cells 5R750 cell costs extra $1 eight-cell transmitter pack goes $4695 $395 S&H fee applies order item order several packs save Its available transmitter configuration connectors So far cells being advertised moving out shop fast possible based just word mouth Flying boat ARF almost-ready-to-fly Ed Lamer Sea Bird came gift Bubba Connie Spivey thinking about RCing Alaska didnt get visit Alaska 1988 s planned variety rea sons will 1989 sure Alaska strange place Much covered permafrost permafrost covered dust humus supports low plants no trees except coastal South east sea fog rainfall can add up 300 inches precipitation per year summer sun melts top layer permafrost turns place swamp Thats what supports industrial-strength mosquitos biting flies swarm June July August rate metal-and-plastic amphibian big fat tires Tundra Tires looks like good idea Bubba Spivey president Lanier RC PO Box 458 Oakwood GA 30566 tele phone 1-401-532-6401 flies Sea Bird off grass wheels could right un less visit some club thats flying off pavement Ill add wheels plan decorate Sea Bird like Air Force Grumman SA-16B take along intend fit Sea Bird Larry Sribnicks modified Kodak disk cam era serve aerial camera Well see what comes Battery water out distilled water ser vicing starter battery needed lot water happens whenever leave charger long time unattended considering whether would better use tap water recommended leave battery low water until got some distilled water risks sulfation plates inspira tion struck have backpackers water filtering unit called First Need made General Ecol ogy Inc 151 Sheree Blvd Lionville PA 19353 sells about $40 claims filter down 02 microns removes sorts Continued page 148 HANDS OFF EspecA 714 Tiperd k9s1 CUT II unique divice cutting high quality foam wing cores HANDS 0FF cutting both sides same time Available hardware package assemble own boardSpecity 38485Wor 68 ordeririq size may changed anytime Max Chord 18 standard C larger chords available assemble Requires 4 Volt Variable Output Power Supply DEALERS WANTED Hands Off Cut II ware package . $8750 S&H 4 Volt Vaiiable output power supply$6250 S& H ViDEO FOAM SHOP Foam Shop Part One Cutting Foam Wings. hour long cuts made using HANDS OFF CUT II YHS Only $2995 includes S&H lower 48 Foam Shop Part Two Cutting Foam Fuselages. hour longAll cuts made using simple bow VHS Only $2995 includes S&H lower 48 SUPER BONDCONTACT ADHESIVE best contact cement have ever used Only $335 8 oz squeeze bottle Enough 1400 sq inch wing Add $200 S&H lower 48 118 inch Phenolic Board Templates 4 X 36 ft Onlu 5OO S&H seII _________ NOR-RAY PRODUCTS INC 008 Sandbeach Road MNCWIFalls TX 76310VISA Wichita Tel 181716924475 February 1989 35 CONSOLIDATED PBY-5A CATALINA 81 inch span 969 square inches 11 lbs Twin 3040 engine size Fiberglass fuselege Vacuum formed clear acetate cockpit blisters Vacuum formed atyrana cowls nacelles Preformed lending gear land operation Foam wing stab cores Retractable wing floata includes wood 90 minute VHS video building flying DARNED GOOD AIRMEN Lightest pilots available Lifelike vinyl latex rubber Build Sportsman Barnstormer Full Body Bust - BUST PILOT KIT Contains pilot head helmet sport cap goggles jacket Easy assemble finish Pice #108-1A scale NEW 595 #10&A/s scale 695 #lO51/s scale. 795 #10414 scale. 895 #1031/3 scale 1495 Flight Protobype recommended flier early intermediate-level skills Handling characteristics determined adjustments control surface throws can gentle like bi plane can docile trainer aero batic capable handling sure Protobype will provide hours pleasure both building flying Good Flying Radio Technique/Myers Continued page 35 JET PILOT KIT Pilot has molded jet helmet Contains face mask oxygen hose Extreme ly Realistic Weighs less io #3081R scale595 #3071/i scale695 ORDERING INSTRUCTIONS See dealer first order direct Add $100 shipping NYS residents add 7% tax Send check money order CODS OK Send $100 catalog doesnt remove dissolved matet-ial like alcohol salt know domestic water chlorinated fluoridated contains rust algae pipes silt source sometimes carries lot used detergents chlorine can boiled away fluoride detergents can removed distillation filter can handle rest decided boil off dissolved gases use filter produce water might injure battery So far battery hasnt blown bubbles still starts model engines might good idea have such filter look wayit has better just plain tap water idea might have some merit road Alaska suspended matter like silt Giardia cysts WhY need RC channels FULL BODY PILOT KIT Contains pilot head hands boots helmet cap goggles full templates easy instruc tions Easy assemble finish Some simple seining required Fully positionable tool pIG #206lA scale895 #2051/ scale995 #204-h scale1095 #2031/3 scale1695 simple * Same sewing required See Dealer add Dollar direct order handling have some disagreements right now official position AMA will sanction use 50 aircraft-only channels January 1 1991 AMA must prevent loss channels nonmodeling users have receiving reports unex plalned interferences new channels give up half what weve got through ne glect subsequently encounter increasing interference channels using will few years think cant lose themthink again FCC has just reassigned 2 MHz piece Amateur two-meter band Land Mobile Ser vice due underutilization Ive told before USE-IT-OR-LOSE-IT SIT UATION am unhappy AMAs Frequency Com mittee Executive Council failed say thing about using 30 7S MHz channels surface-use-only onesin 1991 understand AMA AMYA ROAR etc therefore doesnt sanction events fact remains AMA got chan nels depend AMA keep 30 after listed 1988 Academy Model Aeronautics Member ship Manual see page 10 thereof cares ask Sailboat people regularly operate chan nels simultaneously standing closer gether other hobby group except some Sallplane competitors As example Sat urday morning Hecksher Park pond sall supports 12 heats 12 boats three hours means 12 RC channels continu ous simultaneous use morning Thats RC activity youll ever see alrport cluding Mile Square LA cant share frequencies like alr plane people ask Thats customary set ting up regatta require competitors have least two sets interchangeable crystals modules simplili race matrixing sall dozen boats time matrix heats objective having skip per sail agalnst other skipper present 75MHz switchable synthesizer would boon RC sailboat fraternity hear people asking can still legally swap crystals 27 75 MHz radios make matrices cant Well youd better know recently FCC has REFUSING TO TYPE ACCEPT new radios interchangeable crystals No matter read law thats real world Ven dors cant import radios arent Type Ac cepted So looks like future crystal swapping will have done bootieg able obtain either GE1TING AIRBORNE VOLUME 4 ALL ABOUT BUILDING FLYING COVERING ENGINES AND MORE GETTING AIRBORNE VOLUME ONE has over 400 large detaIled photographs Includes topic lIke selectIng radio radio control works learning fly wIthout Instructor learning wIth Instructor learn basic maneuvers like landing Other chapters explain about ARFs field equIpment operating engines assembling airplane easy learning control Installations much Cat Number BOKOOO$1295 GETTING AIRBORNE VOLUME TWO includes topics like building strength appearance alignment New plastic film covering techniques developed experts beginner explain get nicad batteries rebuild servo engine airframe Additional Installations topics shown much Cat Number BOKOlO$1295 HARRY B HIGLEY SONS INC P 0 sox 522 GLENWOOD ILL 60425 GETTING AIRBORNE 1~ii VOWNE II 148 Model Aviation TOLED THIRTY-FIFTH ANNUAL RADIO CONTROL EXPOSITION TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO ADVANCED TICKETS may ordered sending selfaddressed stamped business size 4Vax9 envelope TICKETS 38235 Castle Romulus Ml 48174 orders above 5 tickets must include extra postage US orders must include 25 centsper order handling charge foreign orders must include 50 cents per order handling charge need send addressed envelope will provide necessary postageExpress Mail Orders Will Accepted Include check money order US funds made payable Weak Signals R/C Club Ticket prices $400 per day adults $1 00 per dayfor children 12 under Please specify number Deadline ticket orders March 31 1989 sales final non-refundable TICKETSAREALSOAVAILABLEAT THE DOOR Exposition information available contacting Wayne Yeager co-director ticket address phone 313 941-6661 Bring latest completely finished models display enter competition exciting awards R/C radios will awarded first second third place winners following classes NON-MILITARY SPORT SCALE PLANE AMA Rules MILITARY SPORT SCALE PLANE AMA Rules PRECISION SCALE PLANE AMA Rules PATTERN PLANE SPORT MONO-PLANE non-scale models SPORT BI-PLANE non-scale models OLD TIMER FREE FLIGHT R/C ASSIST R/C SAILPLANE non-scale models No Engines HELICOPTER R/C CAR COMPETITION BOAT MILITARY SCALE BOAT PLEASURE POWER BOAT WORKING VESSEL-UNARMED models entered competition will judged Best Finish Best MonoKote Directors Award Best Show Come join us enjoy yourselves unquestionably worlds greatest radio control model show will have traditional Swap Shop Saturday Night Auction Open public three great days APRIL 7 8 9 1989 FRIDAY9am to6pm SATURDAY9amto6pm SUNDAY9 am 430 pm presented Weak Signals R/C Club Toledo Ohio crystals explained last month Airtronics Fu taba arent making interchangeable crystals avail able products Now know rest story what think should done about channels Dont tell write AMA dis trict VP can tell George sent HAPPY NEW YEAR Schuemann WinglCarr Continued page 37 fore reducing wings drag essentially way reduce overall drag best accomplished using fully sheeted wing modified Atrix model shown photos rib/spar built-up structure wing could have made sheeted foam No matter what material inside goal make glass-smooth surface still strong enough withstand hard launches keeping goal airfoil should chosen will yield good compromise between thermaling speed requirements Several Eppler Selig airfoils clearly top choices No matter use reduction drag inherent Schuemann planform will increase wings performance Nearly high-speed powered aircraft use wings tapered root tip Sailplanes other hand generally use constant chord partway tip increase strength Schuemann wing used Discus modified Atrix con stunt chord about half span out tip leading edge swept back intervals about 40% 20% 10% modified Atrix wing diagram indi cates exact proportions used tip latest Discus design employs mild up turn trailing edge similar old Aquila model Sailplane tip chord small however doubt upsweep really has much effect center pres sure airfoil blurred since moves aft progressively toward tip retards noticeable step some airfoils like Eppler 205 exhibit effect rather forgiving ship less touchy elevator same 205 airfoil double-tapered wing very nice windy weather light lift may flying hard edge envelope As sweptwing aircraft center-of-gravity CU needs further aft would straight wing modified Atrix will unflyable center-of-gravity 25% root chord becomes very civ ilized CU back 33% 35% Utilizing planform also has addi tional advantage Sailplane straight wing ballasting becomes necessary windy conditions make model able penetrate Herk Stokelys Soaring col umn2 states really need crease airspeed about half wind speed get decent penetration prob lem ballast remains airplane during entire flight model using clean low-drag Schue mann wing will have higher average unbal lasted speed still working light lift landing slowly planform can fly unballasted others loading up add weight search far downwind gale winds still make back landing circle As full-size Discus will have no trouble picking out Sailplane gaggle will probably highest flying several times faster oth ers working lift no else can reach References 1 Spackman Elliot Schuemann Wing Planform RIG Soaring Digest July 1988 2 Herk Stokely Flying Models magazine September 1988 Note ATRIX plans Model Aviation magazine December 1986 issue RC Electrics/Kopski Continued page 39 issues t offered some motor/prop/power/rpm data cobalt 05s Continued page 153 February 1989 149
Edition: Model Aviation - 1989/02
Page Numbers: 34, 35, 148, 149
George M Myers Radio Thchnique 70 FmeIIld Farm Rd Hkksville NY 11801 ABSTRACT XMAS gift tools Narrow-banding 75 MHz vs XTAL-swapping XMAS GIFTS issue should come about last stages XMAS buying frenzy Some following ideas may differ ent enough help pick gift person whos hard buy Portable power tool kit Wen Power Tool Task Force Model 2336 comes handy plas tic briefcase contains four 12 VDC tools jigsaw -in drill motor 14000-rpm grinder 25-watt soldering iron accessories 12 VDC 2-amp power supply plugs 110 VAC household current tools will operate cigar lighter socket car cigar-lighter plug provided added two such plugs Radio Shack plus 1-to-2 cigar socket multiplier provides plug two sockets power supply bought $89 discount marine supplies store should able find hobby store point Im going throw away Dremel other tools think will enjoy having little package van drive 100 miles go flying never knows what kind repairs will needed distance does Besides smaller-size tools especially jigsaw very handy around models portable tools Sears reciprocating-saw blade Super Finish #928761 can made fit neatly X-Acto #1 handle just little grinding Dremel cut off wheel Its just thing need cut slot inside built-up airplane clean out existing holes midnight desperation moves tumed out well Im sharing belt-loop tool holster Brookstone #7-13061 Peterborough NH other places $1095 holds Magna-Lite flashlight Swiss Army knife sharpening stick ball-point pen 45-in Channel-lock pliers added snap cover protect flashlight keep turn34 Model Aviation Georges Grumman SA-16B lookalike actually Lanier RC Sea Bird disguise Ko dak disc camera aboard will Georges eye-in-the-sky forthcoming trip Alaska Wen Mfg Task Force set small 12volt power tools travel case Power car battery household 110volt plug converter supplied Transmitter battery pack bottom SR Bat teries new replacement pack featuring 750mAh cells Thats 50% capacity no increase physical size First Need backpackers water filtering unit will go George Alaska case cant find distilled water servicing flight boxs starter battery Myers uses slightly modified belt-loop tool holster Brookstone keep selection vital small tools hand Sears Super Finish sabre-saw blade will fit X-Acto handle mounting tab ground down tad Lots uses ing itself whenever brush up against some thing item saves pocket holes thigh bruises Ive met number people say ad mire Swiss Army knife tools con tains would never carry because lump makes pocket holster keeps knife other tools small package shop field looks silly first soon get used having everything ready hand understanding created Emergency Medical Service techni cians load flashlight ball-point pen scissors makes nice stocking stuffer dont think So tools go High-capacity transmitter battery pack needed new battery pack Airtronics CS 5H transmitter called friend Larry Srib nick SR batteries Larry sent 5R750 transmitter pack exactly same size original Sanyo AA 500-mAh pack has 50% capacity dont have resort ex temal pack get extra capacity transmitter SR will make cells flight packs because cells sensitive vibration other cells 5R750 cell costs extra $1 eight-cell transmitter pack goes $4695 $395 S&H fee applies order item order several packs save Its available transmitter configuration connectors So far cells being advertised moving out shop fast possible based just word mouth Flying boat ARF almost-ready-to-fly Ed Lamer Sea Bird came gift Bubba Connie Spivey thinking about RCing Alaska didnt get visit Alaska 1988 s planned variety rea sons will 1989 sure Alaska strange place Much covered permafrost permafrost covered dust humus supports low plants no trees except coastal South east sea fog rainfall can add up 300 inches precipitation per year summer sun melts top layer permafrost turns place swamp Thats what supports industrial-strength mosquitos biting flies swarm June July August rate metal-and-plastic amphibian big fat tires Tundra Tires looks like good idea Bubba Spivey president Lanier RC PO Box 458 Oakwood GA 30566 tele phone 1-401-532-6401 flies Sea Bird off grass wheels could right un less visit some club thats flying off pavement Ill add wheels plan decorate Sea Bird like Air Force Grumman SA-16B take along intend fit Sea Bird Larry Sribnicks modified Kodak disk cam era serve aerial camera Well see what comes Battery water out distilled water ser vicing starter battery needed lot water happens whenever leave charger long time unattended considering whether would better use tap water recommended leave battery low water until got some distilled water risks sulfation plates inspira tion struck have backpackers water filtering unit called First Need made General Ecol ogy Inc 151 Sheree Blvd Lionville PA 19353 sells about $40 claims filter down 02 microns removes sorts Continued page 148 HANDS OFF EspecA 714 Tiperd k9s1 CUT II unique divice cutting high quality foam wing cores HANDS 0FF cutting both sides same time Available hardware package assemble own boardSpecity 38485Wor 68 ordeririq size may changed anytime Max Chord 18 standard C larger chords available assemble Requires 4 Volt Variable Output Power Supply DEALERS WANTED Hands Off Cut II ware package . $8750 S&H 4 Volt Vaiiable output power supply$6250 S& H ViDEO FOAM SHOP Foam Shop Part One Cutting Foam Wings. hour long cuts made using HANDS OFF CUT II YHS Only $2995 includes S&H lower 48 Foam Shop Part Two Cutting Foam Fuselages. hour longAll cuts made using simple bow VHS Only $2995 includes S&H lower 48 SUPER BONDCONTACT ADHESIVE best contact cement have ever used Only $335 8 oz squeeze bottle Enough 1400 sq inch wing Add $200 S&H lower 48 118 inch Phenolic Board Templates 4 X 36 ft Onlu 5OO S&H seII _________ NOR-RAY PRODUCTS INC 008 Sandbeach Road MNCWIFalls TX 76310VISA Wichita Tel 181716924475 February 1989 35 CONSOLIDATED PBY-5A CATALINA 81 inch span 969 square inches 11 lbs Twin 3040 engine size Fiberglass fuselege Vacuum formed clear acetate cockpit blisters Vacuum formed atyrana cowls nacelles Preformed lending gear land operation Foam wing stab cores Retractable wing floata includes wood 90 minute VHS video building flying DARNED GOOD AIRMEN Lightest pilots available Lifelike vinyl latex rubber Build Sportsman Barnstormer Full Body Bust - BUST PILOT KIT Contains pilot head helmet sport cap goggles jacket Easy assemble finish Pice #108-1A scale NEW 595 #10&A/s scale 695 #lO51/s scale. 795 #10414 scale. 895 #1031/3 scale 1495 Flight Protobype recommended flier early intermediate-level skills Handling characteristics determined adjustments control surface throws can gentle like bi plane can docile trainer aero batic capable handling sure Protobype will provide hours pleasure both building flying Good Flying Radio Technique/Myers Continued page 35 JET PILOT KIT Pilot has molded jet helmet Contains face mask oxygen hose Extreme ly Realistic Weighs less io #3081R scale595 #3071/i scale695 ORDERING INSTRUCTIONS See dealer first order direct Add $100 shipping NYS residents add 7% tax Send check money order CODS OK Send $100 catalog doesnt remove dissolved matet-ial like alcohol salt know domestic water chlorinated fluoridated contains rust algae pipes silt source sometimes carries lot used detergents chlorine can boiled away fluoride detergents can removed distillation filter can handle rest decided boil off dissolved gases use filter produce water might injure battery So far battery hasnt blown bubbles still starts model engines might good idea have such filter look wayit has better just plain tap water idea might have some merit road Alaska suspended matter like silt Giardia cysts WhY need RC channels FULL BODY PILOT KIT Contains pilot head hands boots helmet cap goggles full templates easy instruc tions Easy assemble finish Some simple seining required Fully positionable tool pIG #206lA scale895 #2051/ scale995 #204-h scale1095 #2031/3 scale1695 simple * Same sewing required See Dealer add Dollar direct order handling have some disagreements right now official position AMA will sanction use 50 aircraft-only channels January 1 1991 AMA must prevent loss channels nonmodeling users have receiving reports unex plalned interferences new channels give up half what weve got through ne glect subsequently encounter increasing interference channels using will few years think cant lose themthink again FCC has just reassigned 2 MHz piece Amateur two-meter band Land Mobile Ser vice due underutilization Ive told before USE-IT-OR-LOSE-IT SIT UATION am unhappy AMAs Frequency Com mittee Executive Council failed say thing about using 30 7S MHz channels surface-use-only onesin 1991 understand AMA AMYA ROAR etc therefore doesnt sanction events fact remains AMA got chan nels depend AMA keep 30 after listed 1988 Academy Model Aeronautics Member ship Manual see page 10 thereof cares ask Sailboat people regularly operate chan nels simultaneously standing closer gether other hobby group except some Sallplane competitors As example Sat urday morning Hecksher Park pond sall supports 12 heats 12 boats three hours means 12 RC channels continu ous simultaneous use morning Thats RC activity youll ever see alrport cluding Mile Square LA cant share frequencies like alr plane people ask Thats customary set ting up regatta require competitors have least two sets interchangeable crystals modules simplili race matrixing sall dozen boats time matrix heats objective having skip per sail agalnst other skipper present 75MHz switchable synthesizer would boon RC sailboat fraternity hear people asking can still legally swap crystals 27 75 MHz radios make matrices cant Well youd better know recently FCC has REFUSING TO TYPE ACCEPT new radios interchangeable crystals No matter read law thats real world Ven dors cant import radios arent Type Ac cepted So looks like future crystal swapping will have done bootieg able obtain either GE1TING AIRBORNE VOLUME 4 ALL ABOUT BUILDING FLYING COVERING ENGINES AND MORE GETTING AIRBORNE VOLUME ONE has over 400 large detaIled photographs Includes topic lIke selectIng radio radio control works learning fly wIthout Instructor learning wIth Instructor learn basic maneuvers like landing Other chapters explain about ARFs field equIpment operating engines assembling airplane easy learning control Installations much Cat Number BOKOOO$1295 GETTING AIRBORNE VOLUME TWO includes topics like building strength appearance alignment New plastic film covering techniques developed experts beginner explain get nicad batteries rebuild servo engine airframe Additional Installations topics shown much Cat Number BOKOlO$1295 HARRY B HIGLEY SONS INC P 0 sox 522 GLENWOOD ILL 60425 GETTING AIRBORNE 1~ii VOWNE II 148 Model Aviation TOLED THIRTY-FIFTH ANNUAL RADIO CONTROL EXPOSITION TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO ADVANCED TICKETS may ordered sending selfaddressed stamped business size 4Vax9 envelope TICKETS 38235 Castle Romulus Ml 48174 orders above 5 tickets must include extra postage US orders must include 25 centsper order handling charge foreign orders must include 50 cents per order handling charge need send addressed envelope will provide necessary postageExpress Mail Orders Will Accepted Include check money order US funds made payable Weak Signals R/C Club Ticket prices $400 per day adults $1 00 per dayfor children 12 under Please specify number Deadline ticket orders March 31 1989 sales final non-refundable TICKETSAREALSOAVAILABLEAT THE DOOR Exposition information available contacting Wayne Yeager co-director ticket address phone 313 941-6661 Bring latest completely finished models display enter competition exciting awards R/C radios will awarded first second third place winners following classes NON-MILITARY SPORT SCALE PLANE AMA Rules MILITARY SPORT SCALE PLANE AMA Rules PRECISION SCALE PLANE AMA Rules PATTERN PLANE SPORT MONO-PLANE non-scale models SPORT BI-PLANE non-scale models OLD TIMER FREE FLIGHT R/C ASSIST R/C SAILPLANE non-scale models No Engines HELICOPTER R/C CAR COMPETITION BOAT MILITARY SCALE BOAT PLEASURE POWER BOAT WORKING VESSEL-UNARMED models entered competition will judged Best Finish Best MonoKote Directors Award Best Show Come join us enjoy yourselves unquestionably worlds greatest radio control model show will have traditional Swap Shop Saturday Night Auction Open public three great days APRIL 7 8 9 1989 FRIDAY9am to6pm SATURDAY9amto6pm SUNDAY9 am 430 pm presented Weak Signals R/C Club Toledo Ohio crystals explained last month Airtronics Fu taba arent making interchangeable crystals avail able products Now know rest story what think should done about channels Dont tell write AMA dis trict VP can tell George sent HAPPY NEW YEAR Schuemann WinglCarr Continued page 37 fore reducing wings drag essentially way reduce overall drag best accomplished using fully sheeted wing modified Atrix model shown photos rib/spar built-up structure wing could have made sheeted foam No matter what material inside goal make glass-smooth surface still strong enough withstand hard launches keeping goal airfoil should chosen will yield good compromise between thermaling speed requirements Several Eppler Selig airfoils clearly top choices No matter use reduction drag inherent Schuemann planform will increase wings performance Nearly high-speed powered aircraft use wings tapered root tip Sailplanes other hand generally use constant chord partway tip increase strength Schuemann wing used Discus modified Atrix con stunt chord about half span out tip leading edge swept back intervals about 40% 20% 10% modified Atrix wing diagram indi cates exact proportions used tip latest Discus design employs mild up turn trailing edge similar old Aquila model Sailplane tip chord small however doubt upsweep really has much effect center pres sure airfoil blurred since moves aft progressively toward tip retards noticeable step some airfoils like Eppler 205 exhibit effect rather forgiving ship less touchy elevator same 205 airfoil double-tapered wing very nice windy weather light lift may flying hard edge envelope As sweptwing aircraft center-of-gravity CU needs further aft would straight wing modified Atrix will unflyable center-of-gravity 25% root chord becomes very civ ilized CU back 33% 35% Utilizing planform also has addi tional advantage Sailplane straight wing ballasting becomes necessary windy conditions make model able penetrate Herk Stokelys Soaring col umn2 states really need crease airspeed about half wind speed get decent penetration prob lem ballast remains airplane during entire flight model using clean low-drag Schue mann wing will have higher average unbal lasted speed still working light lift landing slowly planform can fly unballasted others loading up add weight search far downwind gale winds still make back landing circle As full-size Discus will have no trouble picking out Sailplane gaggle will probably highest flying several times faster oth ers working lift no else can reach References 1 Spackman Elliot Schuemann Wing Planform RIG Soaring Digest July 1988 2 Herk Stokely Flying Models magazine September 1988 Note ATRIX plans Model Aviation magazine December 1986 issue RC Electrics/Kopski Continued page 39 issues t offered some motor/prop/power/rpm data cobalt 05s Continued page 153 February 1989 149
Edition: Model Aviation - 1989/02
Page Numbers: 34, 35, 148, 149
George M Myers Radio Thchnique 70 FmeIIld Farm Rd Hkksville NY 11801 ABSTRACT XMAS gift tools Narrow-banding 75 MHz vs XTAL-swapping XMAS GIFTS issue should come about last stages XMAS buying frenzy Some following ideas may differ ent enough help pick gift person whos hard buy Portable power tool kit Wen Power Tool Task Force Model 2336 comes handy plas tic briefcase contains four 12 VDC tools jigsaw -in drill motor 14000-rpm grinder 25-watt soldering iron accessories 12 VDC 2-amp power supply plugs 110 VAC household current tools will operate cigar lighter socket car cigar-lighter plug provided added two such plugs Radio Shack plus 1-to-2 cigar socket multiplier provides plug two sockets power supply bought $89 discount marine supplies store should able find hobby store point Im going throw away Dremel other tools think will enjoy having little package van drive 100 miles go flying never knows what kind repairs will needed distance does Besides smaller-size tools especially jigsaw very handy around models portable tools Sears reciprocating-saw blade Super Finish #928761 can made fit neatly X-Acto #1 handle just little grinding Dremel cut off wheel Its just thing need cut slot inside built-up airplane clean out existing holes midnight desperation moves tumed out well Im sharing belt-loop tool holster Brookstone #7-13061 Peterborough NH other places $1095 holds Magna-Lite flashlight Swiss Army knife sharpening stick ball-point pen 45-in Channel-lock pliers added snap cover protect flashlight keep turn34 Model Aviation Georges Grumman SA-16B lookalike actually Lanier RC Sea Bird disguise Ko dak disc camera aboard will Georges eye-in-the-sky forthcoming trip Alaska Wen Mfg Task Force set small 12volt power tools travel case Power car battery household 110volt plug converter supplied Transmitter battery pack bottom SR Bat teries new replacement pack featuring 750mAh cells Thats 50% capacity no increase physical size First Need backpackers water filtering unit will go George Alaska case cant find distilled water servicing flight boxs starter battery Myers uses slightly modified belt-loop tool holster Brookstone keep selection vital small tools hand Sears Super Finish sabre-saw blade will fit X-Acto handle mounting tab ground down tad Lots uses ing itself whenever brush up against some thing item saves pocket holes thigh bruises Ive met number people say ad mire Swiss Army knife tools con tains would never carry because lump makes pocket holster keeps knife other tools small package shop field looks silly first soon get used having everything ready hand understanding created Emergency Medical Service techni cians load flashlight ball-point pen scissors makes nice stocking stuffer dont think So tools go High-capacity transmitter battery pack needed new battery pack Airtronics CS 5H transmitter called friend Larry Srib nick SR batteries Larry sent 5R750 transmitter pack exactly same size original Sanyo AA 500-mAh pack has 50% capacity dont have resort ex temal pack get extra capacity transmitter SR will make cells flight packs because cells sensitive vibration other cells 5R750 cell costs extra $1 eight-cell transmitter pack goes $4695 $395 S&H fee applies order item order several packs save Its available transmitter configuration connectors So far cells being advertised moving out shop fast possible based just word mouth Flying boat ARF almost-ready-to-fly Ed Lamer Sea Bird came gift Bubba Connie Spivey thinking about RCing Alaska didnt get visit Alaska 1988 s planned variety rea sons will 1989 sure Alaska strange place Much covered permafrost permafrost covered dust humus supports low plants no trees except coastal South east sea fog rainfall can add up 300 inches precipitation per year summer sun melts top layer permafrost turns place swamp Thats what supports industrial-strength mosquitos biting flies swarm June July August rate metal-and-plastic amphibian big fat tires Tundra Tires looks like good idea Bubba Spivey president Lanier RC PO Box 458 Oakwood GA 30566 tele phone 1-401-532-6401 flies Sea Bird off grass wheels could right un less visit some club thats flying off pavement Ill add wheels plan decorate Sea Bird like Air Force Grumman SA-16B take along intend fit Sea Bird Larry Sribnicks modified Kodak disk cam era serve aerial camera Well see what comes Battery water out distilled water ser vicing starter battery needed lot water happens whenever leave charger long time unattended considering whether would better use tap water recommended leave battery low water until got some distilled water risks sulfation plates inspira tion struck have backpackers water filtering unit called First Need made General Ecol ogy Inc 151 Sheree Blvd Lionville PA 19353 sells about $40 claims filter down 02 microns removes sorts Continued page 148 HANDS OFF EspecA 714 Tiperd k9s1 CUT II unique divice cutting high quality foam wing cores HANDS 0FF cutting both sides same time Available hardware package assemble own boardSpecity 38485Wor 68 ordeririq size may changed anytime Max Chord 18 standard C larger chords available assemble Requires 4 Volt Variable Output Power Supply DEALERS WANTED Hands Off Cut II ware package . $8750 S&H 4 Volt Vaiiable output power supply$6250 S& H ViDEO FOAM SHOP Foam Shop Part One Cutting Foam Wings. hour long cuts made using HANDS OFF CUT II YHS Only $2995 includes S&H lower 48 Foam Shop Part Two Cutting Foam Fuselages. hour longAll cuts made using simple bow VHS Only $2995 includes S&H lower 48 SUPER BONDCONTACT ADHESIVE best contact cement have ever used Only $335 8 oz squeeze bottle Enough 1400 sq inch wing Add $200 S&H lower 48 118 inch Phenolic Board Templates 4 X 36 ft Onlu 5OO S&H seII _________ NOR-RAY PRODUCTS INC 008 Sandbeach Road MNCWIFalls TX 76310VISA Wichita Tel 181716924475 February 1989 35 CONSOLIDATED PBY-5A CATALINA 81 inch span 969 square inches 11 lbs Twin 3040 engine size Fiberglass fuselege Vacuum formed clear acetate cockpit blisters Vacuum formed atyrana cowls nacelles Preformed lending gear land operation Foam wing stab cores Retractable wing floata includes wood 90 minute VHS video building flying DARNED GOOD AIRMEN Lightest pilots available Lifelike vinyl latex rubber Build Sportsman Barnstormer Full Body Bust - BUST PILOT KIT Contains pilot head helmet sport cap goggles jacket Easy assemble finish Pice #108-1A scale NEW 595 #10&A/s scale 695 #lO51/s scale. 795 #10414 scale. 895 #1031/3 scale 1495 Flight Protobype recommended flier early intermediate-level skills Handling characteristics determined adjustments control surface throws can gentle like bi plane can docile trainer aero batic capable handling sure Protobype will provide hours pleasure both building flying Good Flying Radio Technique/Myers Continued page 35 JET PILOT KIT Pilot has molded jet helmet Contains face mask oxygen hose Extreme ly Realistic Weighs less io #3081R scale595 #3071/i scale695 ORDERING INSTRUCTIONS See dealer first order direct Add $100 shipping NYS residents add 7% tax Send check money order CODS OK Send $100 catalog doesnt remove dissolved matet-ial like alcohol salt know domestic water chlorinated fluoridated contains rust algae pipes silt source sometimes carries lot used detergents chlorine can boiled away fluoride detergents can removed distillation filter can handle rest decided boil off dissolved gases use filter produce water might injure battery So far battery hasnt blown bubbles still starts model engines might good idea have such filter look wayit has better just plain tap water idea might have some merit road Alaska suspended matter like silt Giardia cysts WhY need RC channels FULL BODY PILOT KIT Contains pilot head hands boots helmet cap goggles full templates easy instruc tions Easy assemble finish Some simple seining required Fully positionable tool pIG #206lA scale895 #2051/ scale995 #204-h scale1095 #2031/3 scale1695 simple * Same sewing required See Dealer add Dollar direct order handling have some disagreements right now official position AMA will sanction use 50 aircraft-only channels January 1 1991 AMA must prevent loss channels nonmodeling users have receiving reports unex plalned interferences new channels give up half what weve got through ne glect subsequently encounter increasing interference channels using will few years think cant lose themthink again FCC has just reassigned 2 MHz piece Amateur two-meter band Land Mobile Ser vice due underutilization Ive told before USE-IT-OR-LOSE-IT SIT UATION am unhappy AMAs Frequency Com mittee Executive Council failed say thing about using 30 7S MHz channels surface-use-only onesin 1991 understand AMA AMYA ROAR etc therefore doesnt sanction events fact remains AMA got chan nels depend AMA keep 30 after listed 1988 Academy Model Aeronautics Member ship Manual see page 10 thereof cares ask Sailboat people regularly operate chan nels simultaneously standing closer gether other hobby group except some Sallplane competitors As example Sat urday morning Hecksher Park pond sall supports 12 heats 12 boats three hours means 12 RC channels continu ous simultaneous use morning Thats RC activity youll ever see alrport cluding Mile Square LA cant share frequencies like alr plane people ask Thats customary set ting up regatta require competitors have least two sets interchangeable crystals modules simplili race matrixing sall dozen boats time matrix heats objective having skip per sail agalnst other skipper present 75MHz switchable synthesizer would boon RC sailboat fraternity hear people asking can still legally swap crystals 27 75 MHz radios make matrices cant Well youd better know recently FCC has REFUSING TO TYPE ACCEPT new radios interchangeable crystals No matter read law thats real world Ven dors cant import radios arent Type Ac cepted So looks like future crystal swapping will have done bootieg able obtain either GE1TING AIRBORNE VOLUME 4 ALL ABOUT BUILDING FLYING COVERING ENGINES AND MORE GETTING AIRBORNE VOLUME ONE has over 400 large detaIled photographs Includes topic lIke selectIng radio radio control works learning fly wIthout Instructor learning wIth Instructor learn basic maneuvers like landing Other chapters explain about ARFs field equIpment operating engines assembling airplane easy learning control Installations much Cat Number BOKOOO$1295 GETTING AIRBORNE VOLUME TWO includes topics like building strength appearance alignment New plastic film covering techniques developed experts beginner explain get nicad batteries rebuild servo engine airframe Additional Installations topics shown much Cat Number BOKOlO$1295 HARRY B HIGLEY SONS INC P 0 sox 522 GLENWOOD ILL 60425 GETTING AIRBORNE 1~ii VOWNE II 148 Model Aviation TOLED THIRTY-FIFTH ANNUAL RADIO CONTROL EXPOSITION TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO ADVANCED TICKETS may ordered sending selfaddressed stamped business size 4Vax9 envelope TICKETS 38235 Castle Romulus Ml 48174 orders above 5 tickets must include extra postage US orders must include 25 centsper order handling charge foreign orders must include 50 cents per order handling charge need send addressed envelope will provide necessary postageExpress Mail Orders Will Accepted Include check money order US funds made payable Weak Signals R/C Club Ticket prices $400 per day adults $1 00 per dayfor children 12 under Please specify number Deadline ticket orders March 31 1989 sales final non-refundable TICKETSAREALSOAVAILABLEAT THE DOOR Exposition information available contacting Wayne Yeager co-director ticket address phone 313 941-6661 Bring latest completely finished models display enter competition exciting awards R/C radios will awarded first second third place winners following classes NON-MILITARY SPORT SCALE PLANE AMA Rules MILITARY SPORT SCALE PLANE AMA Rules PRECISION SCALE PLANE AMA Rules PATTERN PLANE SPORT MONO-PLANE non-scale models SPORT BI-PLANE non-scale models OLD TIMER FREE FLIGHT R/C ASSIST R/C SAILPLANE non-scale models No Engines HELICOPTER R/C CAR COMPETITION BOAT MILITARY SCALE BOAT PLEASURE POWER BOAT WORKING VESSEL-UNARMED models entered competition will judged Best Finish Best MonoKote Directors Award Best Show Come join us enjoy yourselves unquestionably worlds greatest radio control model show will have traditional Swap Shop Saturday Night Auction Open public three great days APRIL 7 8 9 1989 FRIDAY9am to6pm SATURDAY9amto6pm SUNDAY9 am 430 pm presented Weak Signals R/C Club Toledo Ohio crystals explained last month Airtronics Fu taba arent making interchangeable crystals avail able products Now know rest story what think should done about channels Dont tell write AMA dis trict VP can tell George sent HAPPY NEW YEAR Schuemann WinglCarr Continued page 37 fore reducing wings drag essentially way reduce overall drag best accomplished using fully sheeted wing modified Atrix model shown photos rib/spar built-up structure wing could have made sheeted foam No matter what material inside goal make glass-smooth surface still strong enough withstand hard launches keeping goal airfoil should chosen will yield good compromise between thermaling speed requirements Several Eppler Selig airfoils clearly top choices No matter use reduction drag inherent Schuemann planform will increase wings performance Nearly high-speed powered aircraft use wings tapered root tip Sailplanes other hand generally use constant chord partway tip increase strength Schuemann wing used Discus modified Atrix con stunt chord about half span out tip leading edge swept back intervals about 40% 20% 10% modified Atrix wing diagram indi cates exact proportions used tip latest Discus design employs mild up turn trailing edge similar old Aquila model Sailplane tip chord small however doubt upsweep really has much effect center pres sure airfoil blurred since moves aft progressively toward tip retards noticeable step some airfoils like Eppler 205 exhibit effect rather forgiving ship less touchy elevator same 205 airfoil double-tapered wing very nice windy weather light lift may flying hard edge envelope As sweptwing aircraft center-of-gravity CU needs further aft would straight wing modified Atrix will unflyable center-of-gravity 25% root chord becomes very civ ilized CU back 33% 35% Utilizing planform also has addi tional advantage Sailplane straight wing ballasting becomes necessary windy conditions make model able penetrate Herk Stokelys Soaring col umn2 states really need crease airspeed about half wind speed get decent penetration prob lem ballast remains airplane during entire flight model using clean low-drag Schue mann wing will have higher average unbal lasted speed still working light lift landing slowly planform can fly unballasted others loading up add weight search far downwind gale winds still make back landing circle As full-size Discus will have no trouble picking out Sailplane gaggle will probably highest flying several times faster oth ers working lift no else can reach References 1 Spackman Elliot Schuemann Wing Planform RIG Soaring Digest July 1988 2 Herk Stokely Flying Models magazine September 1988 Note ATRIX plans Model Aviation magazine December 1986 issue RC Electrics/Kopski Continued page 39 issues t offered some motor/prop/power/rpm data cobalt 05s Continued page 153 February 1989 149
Edition: Model Aviation - 1989/02
Page Numbers: 34, 35, 148, 149
George M Myers Radio Thchnique 70 FmeIIld Farm Rd Hkksville NY 11801 ABSTRACT XMAS gift tools Narrow-banding 75 MHz vs XTAL-swapping XMAS GIFTS issue should come about last stages XMAS buying frenzy Some following ideas may differ ent enough help pick gift person whos hard buy Portable power tool kit Wen Power Tool Task Force Model 2336 comes handy plas tic briefcase contains four 12 VDC tools jigsaw -in drill motor 14000-rpm grinder 25-watt soldering iron accessories 12 VDC 2-amp power supply plugs 110 VAC household current tools will operate cigar lighter socket car cigar-lighter plug provided added two such plugs Radio Shack plus 1-to-2 cigar socket multiplier provides plug two sockets power supply bought $89 discount marine supplies store should able find hobby store point Im going throw away Dremel other tools think will enjoy having little package van drive 100 miles go flying never knows what kind repairs will needed distance does Besides smaller-size tools especially jigsaw very handy around models portable tools Sears reciprocating-saw blade Super Finish #928761 can made fit neatly X-Acto #1 handle just little grinding Dremel cut off wheel Its just thing need cut slot inside built-up airplane clean out existing holes midnight desperation moves tumed out well Im sharing belt-loop tool holster Brookstone #7-13061 Peterborough NH other places $1095 holds Magna-Lite flashlight Swiss Army knife sharpening stick ball-point pen 45-in Channel-lock pliers added snap cover protect flashlight keep turn34 Model Aviation Georges Grumman SA-16B lookalike actually Lanier RC Sea Bird disguise Ko dak disc camera aboard will Georges eye-in-the-sky forthcoming trip Alaska Wen Mfg Task Force set small 12volt power tools travel case Power car battery household 110volt plug converter supplied Transmitter battery pack bottom SR Bat teries new replacement pack featuring 750mAh cells Thats 50% capacity no increase physical size First Need backpackers water filtering unit will go George Alaska case cant find distilled water servicing flight boxs starter battery Myers uses slightly modified belt-loop tool holster Brookstone keep selection vital small tools hand Sears Super Finish sabre-saw blade will fit X-Acto handle mounting tab ground down tad Lots uses ing itself whenever brush up against some thing item saves pocket holes thigh bruises Ive met number people say ad mire Swiss Army knife tools con tains would never carry because lump makes pocket holster keeps knife other tools small package shop field looks silly first soon get used having everything ready hand understanding created Emergency Medical Service techni cians load flashlight ball-point pen scissors makes nice stocking stuffer dont think So tools go High-capacity transmitter battery pack needed new battery pack Airtronics CS 5H transmitter called friend Larry Srib nick SR batteries Larry sent 5R750 transmitter pack exactly same size original Sanyo AA 500-mAh pack has 50% capacity dont have resort ex temal pack get extra capacity transmitter SR will make cells flight packs because cells sensitive vibration other cells 5R750 cell costs extra $1 eight-cell transmitter pack goes $4695 $395 S&H fee applies order item order several packs save Its available transmitter configuration connectors So far cells being advertised moving out shop fast possible based just word mouth Flying boat ARF almost-ready-to-fly Ed Lamer Sea Bird came gift Bubba Connie Spivey thinking about RCing Alaska didnt get visit Alaska 1988 s planned variety rea sons will 1989 sure Alaska strange place Much covered permafrost permafrost covered dust humus supports low plants no trees except coastal South east sea fog rainfall can add up 300 inches precipitation per year summer sun melts top layer permafrost turns place swamp Thats what supports industrial-strength mosquitos biting flies swarm June July August rate metal-and-plastic amphibian big fat tires Tundra Tires looks like good idea Bubba Spivey president Lanier RC PO Box 458 Oakwood GA 30566 tele phone 1-401-532-6401 flies Sea Bird off grass wheels could right un less visit some club thats flying off pavement Ill add wheels plan decorate Sea Bird like Air Force Grumman SA-16B take along intend fit Sea Bird Larry Sribnicks modified Kodak disk cam era serve aerial camera Well see what comes Battery water out distilled water ser vicing starter battery needed lot water happens whenever leave charger long time unattended considering whether would better use tap water recommended leave battery low water until got some distilled water risks sulfation plates inspira tion struck have backpackers water filtering unit called First Need made General Ecol ogy Inc 151 Sheree Blvd Lionville PA 19353 sells about $40 claims filter down 02 microns removes sorts Continued page 148 HANDS OFF EspecA 714 Tiperd k9s1 CUT II unique divice cutting high quality foam wing cores HANDS 0FF cutting both sides same time Available hardware package assemble own boardSpecity 38485Wor 68 ordeririq size may changed anytime Max Chord 18 standard C larger chords available assemble Requires 4 Volt Variable Output Power Supply DEALERS WANTED Hands Off Cut II ware package . $8750 S&H 4 Volt Vaiiable output power supply$6250 S& H ViDEO FOAM SHOP Foam Shop Part One Cutting Foam Wings. hour long cuts made using HANDS OFF CUT II YHS Only $2995 includes S&H lower 48 Foam Shop Part Two Cutting Foam Fuselages. hour longAll cuts made using simple bow VHS Only $2995 includes S&H lower 48 SUPER BONDCONTACT ADHESIVE best contact cement have ever used Only $335 8 oz squeeze bottle Enough 1400 sq inch wing Add $200 S&H lower 48 118 inch Phenolic Board Templates 4 X 36 ft Onlu 5OO S&H seII _________ NOR-RAY PRODUCTS INC 008 Sandbeach Road MNCWIFalls TX 76310VISA Wichita Tel 181716924475 February 1989 35 CONSOLIDATED PBY-5A CATALINA 81 inch span 969 square inches 11 lbs Twin 3040 engine size Fiberglass fuselege Vacuum formed clear acetate cockpit blisters Vacuum formed atyrana cowls nacelles Preformed lending gear land operation Foam wing stab cores Retractable wing floata includes wood 90 minute VHS video building flying DARNED GOOD AIRMEN Lightest pilots available Lifelike vinyl latex rubber Build Sportsman Barnstormer Full Body Bust - BUST PILOT KIT Contains pilot head helmet sport cap goggles jacket Easy assemble finish Pice #108-1A scale NEW 595 #10&A/s scale 695 #lO51/s scale. 795 #10414 scale. 895 #1031/3 scale 1495 Flight Protobype recommended flier early intermediate-level skills Handling characteristics determined adjustments control surface throws can gentle like bi plane can docile trainer aero batic capable handling sure Protobype will provide hours pleasure both building flying Good Flying Radio Technique/Myers Continued page 35 JET PILOT KIT Pilot has molded jet helmet Contains face mask oxygen hose Extreme ly Realistic Weighs less io #3081R scale595 #3071/i scale695 ORDERING INSTRUCTIONS See dealer first order direct Add $100 shipping NYS residents add 7% tax Send check money order CODS OK Send $100 catalog doesnt remove dissolved matet-ial like alcohol salt know domestic water chlorinated fluoridated contains rust algae pipes silt source sometimes carries lot used detergents chlorine can boiled away fluoride detergents can removed distillation filter can handle rest decided boil off dissolved gases use filter produce water might injure battery So far battery hasnt blown bubbles still starts model engines might good idea have such filter look wayit has better just plain tap water idea might have some merit road Alaska suspended matter like silt Giardia cysts WhY need RC channels FULL BODY PILOT KIT Contains pilot head hands boots helmet cap goggles full templates easy instruc tions Easy assemble finish Some simple seining required Fully positionable tool pIG #206lA scale895 #2051/ scale995 #204-h scale1095 #2031/3 scale1695 simple * Same sewing required See Dealer add Dollar direct order handling have some disagreements right now official position AMA will sanction use 50 aircraft-only channels January 1 1991 AMA must prevent loss channels nonmodeling users have receiving reports unex plalned interferences new channels give up half what weve got through ne glect subsequently encounter increasing interference channels using will few years think cant lose themthink again FCC has just reassigned 2 MHz piece Amateur two-meter band Land Mobile Ser vice due underutilization Ive told before USE-IT-OR-LOSE-IT SIT UATION am unhappy AMAs Frequency Com mittee Executive Council failed say thing about using 30 7S MHz channels surface-use-only onesin 1991 understand AMA AMYA ROAR etc therefore doesnt sanction events fact remains AMA got chan nels depend AMA keep 30 after listed 1988 Academy Model Aeronautics Member ship Manual see page 10 thereof cares ask Sailboat people regularly operate chan nels simultaneously standing closer gether other hobby group except some Sallplane competitors As example Sat urday morning Hecksher Park pond sall supports 12 heats 12 boats three hours means 12 RC channels continu ous simultaneous use morning Thats RC activity youll ever see alrport cluding Mile Square LA cant share frequencies like alr plane people ask Thats customary set ting up regatta require competitors have least two sets interchangeable crystals modules simplili race matrixing sall dozen boats time matrix heats objective having skip per sail agalnst other skipper present 75MHz switchable synthesizer would boon RC sailboat fraternity hear people asking can still legally swap crystals 27 75 MHz radios make matrices cant Well youd better know recently FCC has REFUSING TO TYPE ACCEPT new radios interchangeable crystals No matter read law thats real world Ven dors cant import radios arent Type Ac cepted So looks like future crystal swapping will have done bootieg able obtain either GE1TING AIRBORNE VOLUME 4 ALL ABOUT BUILDING FLYING COVERING ENGINES AND MORE GETTING AIRBORNE VOLUME ONE has over 400 large detaIled photographs Includes topic lIke selectIng radio radio control works learning fly wIthout Instructor learning wIth Instructor learn basic maneuvers like landing Other chapters explain about ARFs field equIpment operating engines assembling airplane easy learning control Installations much Cat Number BOKOOO$1295 GETTING AIRBORNE VOLUME TWO includes topics like building strength appearance alignment New plastic film covering techniques developed experts beginner explain get nicad batteries rebuild servo engine airframe Additional Installations topics shown much Cat Number BOKOlO$1295 HARRY B HIGLEY SONS INC P 0 sox 522 GLENWOOD ILL 60425 GETTING AIRBORNE 1~ii VOWNE II 148 Model Aviation TOLED THIRTY-FIFTH ANNUAL RADIO CONTROL EXPOSITION TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO ADVANCED TICKETS may ordered sending selfaddressed stamped business size 4Vax9 envelope TICKETS 38235 Castle Romulus Ml 48174 orders above 5 tickets must include extra postage US orders must include 25 centsper order handling charge foreign orders must include 50 cents per order handling charge need send addressed envelope will provide necessary postageExpress Mail Orders Will Accepted Include check money order US funds made payable Weak Signals R/C Club Ticket prices $400 per day adults $1 00 per dayfor children 12 under Please specify number Deadline ticket orders March 31 1989 sales final non-refundable TICKETSAREALSOAVAILABLEAT THE DOOR Exposition information available contacting Wayne Yeager co-director ticket address phone 313 941-6661 Bring latest completely finished models display enter competition exciting awards R/C radios will awarded first second third place winners following classes NON-MILITARY SPORT SCALE PLANE AMA Rules MILITARY SPORT SCALE PLANE AMA Rules PRECISION SCALE PLANE AMA Rules PATTERN PLANE SPORT MONO-PLANE non-scale models SPORT BI-PLANE non-scale models OLD TIMER FREE FLIGHT R/C ASSIST R/C SAILPLANE non-scale models No Engines HELICOPTER R/C CAR COMPETITION BOAT MILITARY SCALE BOAT PLEASURE POWER BOAT WORKING VESSEL-UNARMED models entered competition will judged Best Finish Best MonoKote Directors Award Best Show Come join us enjoy yourselves unquestionably worlds greatest radio control model show will have traditional Swap Shop Saturday Night Auction Open public three great days APRIL 7 8 9 1989 FRIDAY9am to6pm SATURDAY9amto6pm SUNDAY9 am 430 pm presented Weak Signals R/C Club Toledo Ohio crystals explained last month Airtronics Fu taba arent making interchangeable crystals avail able products Now know rest story what think should done about channels Dont tell write AMA dis trict VP can tell George sent HAPPY NEW YEAR Schuemann WinglCarr Continued page 37 fore reducing wings drag essentially way reduce overall drag best accomplished using fully sheeted wing modified Atrix model shown photos rib/spar built-up structure wing could have made sheeted foam No matter what material inside goal make glass-smooth surface still strong enough withstand hard launches keeping goal airfoil should chosen will yield good compromise between thermaling speed requirements Several Eppler Selig airfoils clearly top choices No matter use reduction drag inherent Schuemann planform will increase wings performance Nearly high-speed powered aircraft use wings tapered root tip Sailplanes other hand generally use constant chord partway tip increase strength Schuemann wing used Discus modified Atrix con stunt chord about half span out tip leading edge swept back intervals about 40% 20% 10% modified Atrix wing diagram indi cates exact proportions used tip latest Discus design employs mild up turn trailing edge similar old Aquila model Sailplane tip chord small however doubt upsweep really has much effect center pres sure airfoil blurred since moves aft progressively toward tip retards noticeable step some airfoils like Eppler 205 exhibit effect rather forgiving ship less touchy elevator same 205 airfoil double-tapered wing very nice windy weather light lift may flying hard edge envelope As sweptwing aircraft center-of-gravity CU needs further aft would straight wing modified Atrix will unflyable center-of-gravity 25% root chord becomes very civ ilized CU back 33% 35% Utilizing planform also has addi tional advantage Sailplane straight wing ballasting becomes necessary windy conditions make model able penetrate Herk Stokelys Soaring col umn2 states really need crease airspeed about half wind speed get decent penetration prob lem ballast remains airplane during entire flight model using clean low-drag Schue mann wing will have higher average unbal lasted speed still working light lift landing slowly planform can fly unballasted others loading up add weight search far downwind gale winds still make back landing circle As full-size Discus will have no trouble picking out Sailplane gaggle will probably highest flying several times faster oth ers working lift no else can reach References 1 Spackman Elliot Schuemann Wing Planform RIG Soaring Digest July 1988 2 Herk Stokely Flying Models magazine September 1988 Note ATRIX plans Model Aviation magazine December 1986 issue RC Electrics/Kopski Continued page 39 issues t offered some motor/prop/power/rpm data cobalt 05s Continued page 153 February 1989 149