John Preston Safety Comes First Big four-stroke engines can hard props especially plastic ones Guard eyes squirt glow fuel can serious damage cure flyaway RC planes REVERSAL November 1984 issue MA column reported inci dents prop blades large-dis placement four-stroke engines shat tered may have due presence drive-pins prop drive washer Such pins intended prevent rotation prop respect prop drive washer event engine backfires prop nut will loosen nor will entire prop thrown off ap pears use drive-pins prevent such occurrence may cause prop blades thrown off during engine backfire opinion presents far greater risk injury During last month received let ter Clair Sieverling modeler Phoenix AZ injured 14 x 8 wood prop 120 four-stroke broke adjusting fuel mix ture engine equipped four safety bolts pass through holes drilled prop hub enter tapped holes prop drive washer Clairs ac count incident follows friend holding plane started engine let warm up somewhat low speed opened up running very well since still somewhat new fly little rich carefully reached around richened slightly directly line prop did know better anyway right As needle adjust ment took engine started run lit tle rougher would desired noise think backfire prop spinner shattered about tWo feet face hit neck something observers said looked like hit uppercut knocked rear got back up shut throttle stick down felt neck bleeding taken emergency room nearby hospital dug some pieces out found ligament exposed cut sewed up also relieved wallet price good sport radio spent very uncomfortable weekend say least spinner broken several pieces much like broken Coke bottle prop broken two through hub also directly through safety-bolt holes safety bolts sheared off flush engine thrust washer isnt certain whether hit parts spinner prop obvious fortunate wasnt much worseand perhaps fatal think should some serious re consideration using safety bolts through hub larger fourstroke engines prone back fire four-stroke 90 backfired air also shattered prop spinner same manner also safety-bolted have seen props spinners come off running engine desirable generally hit ground front plane seem have energy single pieces flying around have think safety bolts four-stroke backfires good chance will loosen prop nut prop will simply windmill does come off wont dangerous obvious prop will less likely break free give little time backfire Just few days ago received letter Peter Miller British modeler written after read November safety Continued page 14 II 7___ NOW ASK YA EVER FATIGUE LIKE. ThAT SEEN PROP 3EFQRE February 198513 SAFETY ALERT To Owners large tour-stroke engines Subject Propeller drive pins Several brands models four-stroke model airplane en gines displacements 081 Cu up equipped propeller drive pins prop drive washer happen own such engine strongly recommended use drive pins Astounding realism auainaie plastics.. Very light weight discriminating hobblest. Either Pilot version kit.. Sportsman Barnstormer.. Darn Good Airmen .. complete NEW LOW PRICES 01/6 Scale $595 1/4 Scale $795 1/3 Scale 142 S Dealer add Dollar direct order handling VIDEO PROGRAMS NEWAIRPLANEFUNNIESII wildest Creiiest wackiest insane video ever 30 minutes aeromodellng insanity Gremlins working overtime RENTBUY 14954495 13954495 13954495 12953995 14953995 OTHER GREAT VIDEOS 1 BASIC CONSTRUCTION FOR 8EGINNERS IN RIC90 Mm 2 BASIC FLIGHT TRAINING FOR BEGINNERS IN AIC50 Mm Professional step step Instruction Z 3 THE WORLD OF MODEL AVIATION90 Mm Expos static displays AMA NATS scale 4 OSHKOSH OVERVIEW55 Mm Workshops Air Shows Warbirds 5 AIRPLANE FUNNIES II30 Mm ORDERING INFORMATION Programs may rented wloption purchase Duration rentals 3 days Program No lieS days Send Check Money Order full purchsse price tape ordered renting balance will relunded upon return 01 programs ordering specify date desired Club meetings order well advance Allow 10 days checks clear Illinois Residents include 8 per cent tax Shipping charge $300 purchase $450 rental Return postage included VHS ONLY SEND ORDERS TO ACADEMY OF AVIATION RESEARCH AND DEVELOPMENT POBOX 428139 CHICAGO ILLINOIS 312 8740456 column article Concerning drive pins props four-stroke engines Niel Tidey designer very power ful Laser 61 four-cycle tells modelers using ordinary nylon props because lower rpm four-cycles dangerous Due powerful long power stroke hub accelerated prop tips tend lag behind engine comes up compression hub braked and prop tips carry due flywheel effect prop therefore flexing chordwise direction due shape probably twisting sets up fatigue very quickly prop fails chap three brand name 12 x 6 props fail after other Glass-filled nylon ones seem OK wood ones OK cant help wondering failures pinned props may caused hub cannot move flexing concentrated unpinned hubs allow slight movement prop hub theory first part letter fact doubt Petes theory fatigue ing reason nylon prop failure also applies pinned wooden props fourstrokes since wood best knowledge subject fatigue failure However believe sug gestion inability pinned prop move relative drive washer leading cause reported failures Perhaps need special design prop use four-stroke engine going attached multiple bolts pins through hub prop larger diameter hub correspondingly larger-diameter drive washer may whats called Considering quantity fuel must burned year model airplane boat car enthusiasts hear very few incidents fuel asso ciated injury Im sure know death could result drink Thats Federal Government re quires sold container child-proof cap However wonder aware consequenc es getting fuel eye Al Johnson member Cloud Kings RC club recently wrote told about fuel-in-the-eye incident experienced Henry Haffke should need no intro duction since well-known Gee Bee models articles about appear frequently modeling press recently wrote Henry asked him drop line describ ing incident think will agree based following extracts Henrys response fuel eye avoided costs club conducting big Giant Continued page 16 LEADER IN SMALL AIRFOIL TECHNOLOGY MAStER AIRSCREW new K Series family propellers has introduced three sizes 14 x 614 x 8 16 x 6 large propellers have wider blades thinner airfoil sections best performance fourstroke engines will also work very well two-strokes Mold ed same tough glass-filled nylon GIF 1/2A Series props have same incredible strength durability Planned future releases series 12 x 6 16 x 8 Priced $395 $495 WINDSOR PROPELLER CO 384 Tesconi Ct Santa Rosa Cailt 95401 U.d MAA int,t FiyI7050dfl NYS Ridn dd 7% 5NYia * * * * * * * * * * * * * * K 16Model Aviation 3-4 Channel RIC Systems$3995 Balsa Construction add $2 postage/handling 55 Wingspan 35 45 Engines Scale Fly-In Miliville airport Sunday took three /4-scale Gee Bees R-1 Model Y Model D out field Saturday check Out make sure flying right Sunday show flown R-l Model D getting Y ready fly flew once made some ad justments process refuel ling second flight using powerful hand-cranked rotary pump some unknown reason wearing sunglasses never fly head over pump feed line came off got good squirt fuel directly right eye splash direct stream right eye pain horrendous thought bottle water keep car case overheating trouble guys club poured entire two-liter bottle eye didnt seem help much eye swelled closed completely just couple minutes Another club member lives near field went home brought back some Visine put eye didnt seem good either guys took ships apart put station wagon drove home about 10 miles immediately called eye doctor Though immedi ately reachable office said would try get him have him give call pain terrible after about 15 minutes asked daughter take hospital emergency room Before reached counter emergency room normal routine filling out papers answer ing questions performed nurse very good friend saw asked what happened As soon realized trouble whisked off treat ment room told daugher take care red tape nurse immediate ly flowed something eye believe saline solution immediately stopped terrible pain Meanwhile eye doctor called house found way hospital called gave instructions what time much comfortable still couldnt see out eye put patch over gave some drops put periodically doctor met office Sun day morning upon examination eye told entire surface burned away also said damage done first three sec onds though did everything could time nothing could have prevented damage felt given proper treatment time eye would rejuvenate itself its normal con dition wanted patch kept week dont remember just long did just what told sight started to return four five Continued page 18 handing line. complete line decals available model anywhere 6 NEW KILL MARKING SHEETS 70 insignia sheets also letters numbers 0 majordecals available popular oaaoaoo 40-60 sizes plus Giant Scale American sizes believe majordecals have comprehensive assortment available now sizes styles coming time pressure sensitive water transfer DISTRIBUTORS INQUIRIES INVITED CONTACT YOUR LOCAL HO8BY SHOP OR WRITE DIRECT Well bet line youll love being handed LETTERS ANDPROP DECALS NUMBERSFULL COLOR IN 10 COLORSFFALSTANDARD PRESSURE SENSITIVE andHARTZELL-PRATT & WHITNEY WATER TRANSFER.10 dia thru 1/4 scale props L NORTHEAST SCREEN GRAPHICS 21 FISHER AVE EA5T LONGMEAOOW MA 01025 TEL 413-525-4110 World War isnt Quite Over Yet EINDECKER E-III -SNJ 101 Wing 2te Co flgfln LIANT RIC SCALE Marane SAULNIER N * SnootlEolly Moldod FIbongla. Poalago1500 Sq AroSeauttot reA prodAChon nits Old * OaEattMoIdd Tanparnt Canopythe rogeed cOnstruCtiOfl die-Cut parts Both have * EoRRd FtbeRIaaa Moldod Eoglo CowlIng COmplete Kit $27500a hiStoty Contest eitts Easy baud SapeEb Ilight * Plywood FInawalt Hordwaeo Inctododpius 51000 shryprog & hauntliegPlease add $2 postage/handling * Fond dia tandioR Goon togAny eCOSS * Rollad Plan InoErodlonNT residents dad , ,* Dealer InQuiries Now Invited$4395 Standard Class2-Meter Class $7999 UltimateLittle 5copion $5999 * Sleek T-Tail design * Spoilers Spot Landings * * Cloth Wing Covers $1500 pair F ox Models * Foam Wing Construction * Strong Easy Build Fuselage * Eppler 193 Air Foil days just fuzzy images able remove eye patch good sight poor improving slowly Driving little problem since sort double vision multiplied distance instance white line middle road started separating ahead spread apart looked up road doctor treated about two weeks before released told eye would straighten out completelybut would take some time OK vision still distorted Back Fly-In day after eye accident Since seeing out eye couldnt fly models flown friend Sid thousands people come see models full-scale aircraft ultralights balloon really big affair About month later wanted fly Scale contest couple days before tried fly Kaos did sort foolish thing took model off out anyone else around immediately wished hadnt two airplanes sky wasnt best situa tions Fortunately model light could fly very slow managed land OK wasnt ready fly yet eye continued improve would guess after period about two months just about back t6 nor mal thing still noticeable time splitting apart white line down road took about four months before disappeared com pletely Now eye completely back normal have no further trou bles Im sure would have fortunate immediately gotten touch eye doctor top man think Henrys account accident sufficiently graphic really dont have tell careful pump ing fuel either out model Ive suggested use safety glasses previously As Henry stated wearing usual pair sunglasses could have saved himself lot pain anguish letter Sam Hopkins modeler Folsom LA related unusual story concerning flight Giant Scale plane powered 24 cu Big Banger weighing 22 lb Generally speaking loss radio coniniand during flight RC model brings about abrupt termination flight Once radio fails flight model will have sufficient inherent stabili ty continue fly free-flight mode Such case following account Sam Last Saturday August 11 friend went newly-developed field fly Wed scattered thunderstorms Continued page 20 18 Model Aviation Scorpion 8- Little Scorpion JSPARROWHAWK 1/32 SCALE PLASTIC MODEL KIT US Navy Sparrowhawks operated two dirigibles aircraft carrieKduring 1930s among colorful aircraft aviations Golden Age KIT FEATURES U Decals permit finishing model six different Sprrowhawks U Two types wheels hard flexible tires U Monofilament rigging U Detailed interior Send $1 complete catalog kits accessories Dept MA WILLIAMS BROTHERS INC 181 PAWNEE ST SAN MARCOS 92069 CAMEL 1st LANE 2nd AMA SCALE RHINEBECK 84 Manouevers84 2nd Camel B Roane 3rd Triplane B Mackey Send $100 complete literature price list VK kits WW accessories day no else usually use 2 x 5 battery system some cor rosion problems substituted regular switch harness single fourcell four-amp pack pack didnt fit usual battery compartment under cockpit accessible wing removed have hatch aft wing receiver 2 x 5 unit secured substitute battery got stuffed compartment anchored downjust held hatch Big mistake second flight 25-28 oz fuel remaining hatch blew takeoff plane six eight feet air full throttle no radio banked gently left 900 began slow right climbing turn straight back over heads about 100 feet would fly straight turn right wind straight again awhile developed series long ovals moving wind east-southeast direction packed up dashed out onto highway firmly Lord Jesus Christ busy talking him buddy kept ship sight mile finally lost overcast sky immediate area rural large lake about three miles south several subdivisions plus city Covington east hoped plane would make lakeI didnt want see again called sheriffs department no report next morning young lady called say plane crashed back yard lives immediately next shopping center flanked rental store sonic drive-in evidently flew fairly gentle angle under big power line some pine trees lady wasnt too concerned said little ones usually played yard tiey werent home timeabout 600 pm figure Praise Lord ship relatively intact nose busted up engine firewall out leading edge left wing crushed elec tronics still work John what Im praising Lord about evidently flew circles over city just missed big shopping center Saturday after noon flew eight 10 miles flying field impact Im familiar Servo Guardbut can utilized retard throttle have total power failure may tell story admonition just stuff things together last minute did substitute bat tery would never have thought plane would have kept flying takeoff like Heck flew smoother Im controlling itdefinitely humbling experience Back days rudder-only RC models really no Free Flight models ability some Continued page 117 20Model Aviation VK MODEL AIRCRAFT CODud Roan New Jersey winning Camel 5866 Transit Rd Depew NY 14043Phone 716 684-5555 I-I 413 j 11 1isi 1 Beach Ave na Del Rey GA times control rudder flyaways common Todays models neutral stability superior aerobatic performance generally bite dust seconds after loss radio signal As Sam pointed out devices cur rently market will retard throttle event interference loss transmitter signalbut require power on-board battery pack order function readers have simple solution close engine throttle upon loss power onboard battery pack please drop line Meanwhile please make sure airborne battery packs wont ejected takeoff could result just embaTrassment Have safe month John Preston 12235 Tilden wood Dr Rockville MD 20852 Blue Max/Allen Continued page 29 elevator should glued now Remem ber have come up hatch area Make sure exit fuse lage sides far enough forward interfere rudder post Mount completed wing fuse lage. First open hole dowel will go center rib test-fit dowel glue Line up wing fuselage make sure centered square dowel temporarily place slide ply wing mount place dowel glue front F-2 move wing until glue dry triangle stock can now added front wing mount wing still place slide piece wax paper between wing TE fuselage rear mounting plate glued Use 5-mm epoxy glue ply plate place under wing Hold firmly against bottom wing until glue has set Remove wax paper double check make sure wing straight Now drill down through wing doublers through mounting plate Drill out hole wing /I6 tap hole plate 10-32 bolt Add baisa top block fuselage front wing top rear balsa crossgrain sheeting Tall surfaces Build over plan shown sure use spruce leap ing trailing edges stab Cut tle hole top fuselage sheeting clear x rudder post leave part out adds great deal strength installed fin Glue stab bottom fuse lage making sure properly aligned Glue fin sub-fin place Sand rudder tapered shape suggest cut out lightening holes shown plan tail Blue Max quite long everything rear should kept light possible Finishing touches Final-sand everything cover plane ironon covering materials strongly recom mend MonoKote its strength ease application also make hinges Out same material have never failure Install engine mount nose gear nose gear goes up through mount steering arm just below mount wheel collar either inside top mount hold gear place know someone coil bender strongly recommend use Y6-in wire nose gear heavyduty struts save lot props case bender available %2-in gear will work just fine Install tank run fuel lines through center mount Mount engine 6-32 bolts out mount far enough leave room fuel lines come through Mount rudder elevator servos back under hatch Make sure far enough rearward allow receiver placed just ahead Use cable pushrod go rudder servo nose gear cable housing should firmly glued down over its en tire length prevent flexing throttle servo mounted aileron ser vo tray just ahead F-3 flat floor cable pushrod should used throttle also Battery location fuselage depends needed balancing purposes normally under wing right behind tank aileron servo mounted wing rails installed earlier Use sheet metal screws attaching servo con ventional manner CG should fall somewhere between limits shown plan best way check CG place fingers under spars both sides wing slide fingers out equally both sides limits method shown wing plan Desired control throws starting ailerons Y6 up down elevator own rudder 1A left right throws will give easy-to-fly responsive airplane After some test flights throws can adjusted whatever flier feels comfortable first flight open throttle holding slight back pressure elevator will lift off ground about 30 40 feet Let clImb out can get feel way flies its up Blue Max very versatile airplane Continued page 120 February 1 98511 7 Safety/Preston Continued page 20
Edition: Model Aviation - 1985/02
Page Numbers: 13, 14, 16, 18, 20, 117
John Preston Safety Comes First Big four-stroke engines can hard props especially plastic ones Guard eyes squirt glow fuel can serious damage cure flyaway RC planes REVERSAL November 1984 issue MA column reported inci dents prop blades large-dis placement four-stroke engines shat tered may have due presence drive-pins prop drive washer Such pins intended prevent rotation prop respect prop drive washer event engine backfires prop nut will loosen nor will entire prop thrown off ap pears use drive-pins prevent such occurrence may cause prop blades thrown off during engine backfire opinion presents far greater risk injury During last month received let ter Clair Sieverling modeler Phoenix AZ injured 14 x 8 wood prop 120 four-stroke broke adjusting fuel mix ture engine equipped four safety bolts pass through holes drilled prop hub enter tapped holes prop drive washer Clairs ac count incident follows friend holding plane started engine let warm up somewhat low speed opened up running very well since still somewhat new fly little rich carefully reached around richened slightly directly line prop did know better anyway right As needle adjust ment took engine started run lit tle rougher would desired noise think backfire prop spinner shattered about tWo feet face hit neck something observers said looked like hit uppercut knocked rear got back up shut throttle stick down felt neck bleeding taken emergency room nearby hospital dug some pieces out found ligament exposed cut sewed up also relieved wallet price good sport radio spent very uncomfortable weekend say least spinner broken several pieces much like broken Coke bottle prop broken two through hub also directly through safety-bolt holes safety bolts sheared off flush engine thrust washer isnt certain whether hit parts spinner prop obvious fortunate wasnt much worseand perhaps fatal think should some serious re consideration using safety bolts through hub larger fourstroke engines prone back fire four-stroke 90 backfired air also shattered prop spinner same manner also safety-bolted have seen props spinners come off running engine desirable generally hit ground front plane seem have energy single pieces flying around have think safety bolts four-stroke backfires good chance will loosen prop nut prop will simply windmill does come off wont dangerous obvious prop will less likely break free give little time backfire Just few days ago received letter Peter Miller British modeler written after read November safety Continued page 14 II 7___ NOW ASK YA EVER FATIGUE LIKE. ThAT SEEN PROP 3EFQRE February 198513 SAFETY ALERT To Owners large tour-stroke engines Subject Propeller drive pins Several brands models four-stroke model airplane en gines displacements 081 Cu up equipped propeller drive pins prop drive washer happen own such engine strongly recommended use drive pins Astounding realism auainaie plastics.. Very light weight discriminating hobblest. Either Pilot version kit.. Sportsman Barnstormer.. Darn Good Airmen .. complete NEW LOW PRICES 01/6 Scale $595 1/4 Scale $795 1/3 Scale 142 S Dealer add Dollar direct order handling VIDEO PROGRAMS NEWAIRPLANEFUNNIESII wildest Creiiest wackiest insane video ever 30 minutes aeromodellng insanity Gremlins working overtime RENTBUY 14954495 13954495 13954495 12953995 14953995 OTHER GREAT VIDEOS 1 BASIC CONSTRUCTION FOR 8EGINNERS IN RIC90 Mm 2 BASIC FLIGHT TRAINING FOR BEGINNERS IN AIC50 Mm Professional step step Instruction Z 3 THE WORLD OF MODEL AVIATION90 Mm Expos static displays AMA NATS scale 4 OSHKOSH OVERVIEW55 Mm Workshops Air Shows Warbirds 5 AIRPLANE FUNNIES II30 Mm ORDERING INFORMATION Programs may rented wloption purchase Duration rentals 3 days Program No lieS days Send Check Money Order full purchsse price tape ordered renting balance will relunded upon return 01 programs ordering specify date desired Club meetings order well advance Allow 10 days checks clear Illinois Residents include 8 per cent tax Shipping charge $300 purchase $450 rental Return postage included VHS ONLY SEND ORDERS TO ACADEMY OF AVIATION RESEARCH AND DEVELOPMENT POBOX 428139 CHICAGO ILLINOIS 312 8740456 column article Concerning drive pins props four-stroke engines Niel Tidey designer very power ful Laser 61 four-cycle tells modelers using ordinary nylon props because lower rpm four-cycles dangerous Due powerful long power stroke hub accelerated prop tips tend lag behind engine comes up compression hub braked and prop tips carry due flywheel effect prop therefore flexing chordwise direction due shape probably twisting sets up fatigue very quickly prop fails chap three brand name 12 x 6 props fail after other Glass-filled nylon ones seem OK wood ones OK cant help wondering failures pinned props may caused hub cannot move flexing concentrated unpinned hubs allow slight movement prop hub theory first part letter fact doubt Petes theory fatigue ing reason nylon prop failure also applies pinned wooden props fourstrokes since wood best knowledge subject fatigue failure However believe sug gestion inability pinned prop move relative drive washer leading cause reported failures Perhaps need special design prop use four-stroke engine going attached multiple bolts pins through hub prop larger diameter hub correspondingly larger-diameter drive washer may whats called Considering quantity fuel must burned year model airplane boat car enthusiasts hear very few incidents fuel asso ciated injury Im sure know death could result drink Thats Federal Government re quires sold container child-proof cap However wonder aware consequenc es getting fuel eye Al Johnson member Cloud Kings RC club recently wrote told about fuel-in-the-eye incident experienced Henry Haffke should need no intro duction since well-known Gee Bee models articles about appear frequently modeling press recently wrote Henry asked him drop line describ ing incident think will agree based following extracts Henrys response fuel eye avoided costs club conducting big Giant Continued page 16 LEADER IN SMALL AIRFOIL TECHNOLOGY MAStER AIRSCREW new K Series family propellers has introduced three sizes 14 x 614 x 8 16 x 6 large propellers have wider blades thinner airfoil sections best performance fourstroke engines will also work very well two-strokes Mold ed same tough glass-filled nylon GIF 1/2A Series props have same incredible strength durability Planned future releases series 12 x 6 16 x 8 Priced $395 $495 WINDSOR PROPELLER CO 384 Tesconi Ct Santa Rosa Cailt 95401 U.d MAA int,t FiyI7050dfl NYS Ridn dd 7% 5NYia * * * * * * * * * * * * * * K 16Model Aviation 3-4 Channel RIC Systems$3995 Balsa Construction add $2 postage/handling 55 Wingspan 35 45 Engines Scale Fly-In Miliville airport Sunday took three /4-scale Gee Bees R-1 Model Y Model D out field Saturday check Out make sure flying right Sunday show flown R-l Model D getting Y ready fly flew once made some ad justments process refuel ling second flight using powerful hand-cranked rotary pump some unknown reason wearing sunglasses never fly head over pump feed line came off got good squirt fuel directly right eye splash direct stream right eye pain horrendous thought bottle water keep car case overheating trouble guys club poured entire two-liter bottle eye didnt seem help much eye swelled closed completely just couple minutes Another club member lives near field went home brought back some Visine put eye didnt seem good either guys took ships apart put station wagon drove home about 10 miles immediately called eye doctor Though immedi ately reachable office said would try get him have him give call pain terrible after about 15 minutes asked daughter take hospital emergency room Before reached counter emergency room normal routine filling out papers answer ing questions performed nurse very good friend saw asked what happened As soon realized trouble whisked off treat ment room told daugher take care red tape nurse immediate ly flowed something eye believe saline solution immediately stopped terrible pain Meanwhile eye doctor called house found way hospital called gave instructions what time much comfortable still couldnt see out eye put patch over gave some drops put periodically doctor met office Sun day morning upon examination eye told entire surface burned away also said damage done first three sec onds though did everything could time nothing could have prevented damage felt given proper treatment time eye would rejuvenate itself its normal con dition wanted patch kept week dont remember just long did just what told sight started to return four five Continued page 18 handing line. complete line decals available model anywhere 6 NEW KILL MARKING SHEETS 70 insignia sheets also letters numbers 0 majordecals available popular oaaoaoo 40-60 sizes plus Giant Scale American sizes believe majordecals have comprehensive assortment available now sizes styles coming time pressure sensitive water transfer DISTRIBUTORS INQUIRIES INVITED CONTACT YOUR LOCAL HO8BY SHOP OR WRITE DIRECT Well bet line youll love being handed LETTERS ANDPROP DECALS NUMBERSFULL COLOR IN 10 COLORSFFALSTANDARD PRESSURE SENSITIVE andHARTZELL-PRATT & WHITNEY WATER TRANSFER.10 dia thru 1/4 scale props L NORTHEAST SCREEN GRAPHICS 21 FISHER AVE EA5T LONGMEAOOW MA 01025 TEL 413-525-4110 World War isnt Quite Over Yet EINDECKER E-III -SNJ 101 Wing 2te Co flgfln LIANT RIC SCALE Marane SAULNIER N * SnootlEolly Moldod FIbongla. Poalago1500 Sq AroSeauttot reA prodAChon nits Old * OaEattMoIdd Tanparnt Canopythe rogeed cOnstruCtiOfl die-Cut parts Both have * EoRRd FtbeRIaaa Moldod Eoglo CowlIng COmplete Kit $27500a hiStoty Contest eitts Easy baud SapeEb Ilight * Plywood FInawalt Hordwaeo Inctododpius 51000 shryprog & hauntliegPlease add $2 postage/handling * Fond dia tandioR Goon togAny eCOSS * Rollad Plan InoErodlonNT residents dad , ,* Dealer InQuiries Now Invited$4395 Standard Class2-Meter Class $7999 UltimateLittle 5copion $5999 * Sleek T-Tail design * Spoilers Spot Landings * * Cloth Wing Covers $1500 pair F ox Models * Foam Wing Construction * Strong Easy Build Fuselage * Eppler 193 Air Foil days just fuzzy images able remove eye patch good sight poor improving slowly Driving little problem since sort double vision multiplied distance instance white line middle road started separating ahead spread apart looked up road doctor treated about two weeks before released told eye would straighten out completelybut would take some time OK vision still distorted Back Fly-In day after eye accident Since seeing out eye couldnt fly models flown friend Sid thousands people come see models full-scale aircraft ultralights balloon really big affair About month later wanted fly Scale contest couple days before tried fly Kaos did sort foolish thing took model off out anyone else around immediately wished hadnt two airplanes sky wasnt best situa tions Fortunately model light could fly very slow managed land OK wasnt ready fly yet eye continued improve would guess after period about two months just about back t6 nor mal thing still noticeable time splitting apart white line down road took about four months before disappeared com pletely Now eye completely back normal have no further trou bles Im sure would have fortunate immediately gotten touch eye doctor top man think Henrys account accident sufficiently graphic really dont have tell careful pump ing fuel either out model Ive suggested use safety glasses previously As Henry stated wearing usual pair sunglasses could have saved himself lot pain anguish letter Sam Hopkins modeler Folsom LA related unusual story concerning flight Giant Scale plane powered 24 cu Big Banger weighing 22 lb Generally speaking loss radio coniniand during flight RC model brings about abrupt termination flight Once radio fails flight model will have sufficient inherent stabili ty continue fly free-flight mode Such case following account Sam Last Saturday August 11 friend went newly-developed field fly Wed scattered thunderstorms Continued page 20 18 Model Aviation Scorpion 8- Little Scorpion JSPARROWHAWK 1/32 SCALE PLASTIC MODEL KIT US Navy Sparrowhawks operated two dirigibles aircraft carrieKduring 1930s among colorful aircraft aviations Golden Age KIT FEATURES U Decals permit finishing model six different Sprrowhawks U Two types wheels hard flexible tires U Monofilament rigging U Detailed interior Send $1 complete catalog kits accessories Dept MA WILLIAMS BROTHERS INC 181 PAWNEE ST SAN MARCOS 92069 CAMEL 1st LANE 2nd AMA SCALE RHINEBECK 84 Manouevers84 2nd Camel B Roane 3rd Triplane B Mackey Send $100 complete literature price list VK kits WW accessories day no else usually use 2 x 5 battery system some cor rosion problems substituted regular switch harness single fourcell four-amp pack pack didnt fit usual battery compartment under cockpit accessible wing removed have hatch aft wing receiver 2 x 5 unit secured substitute battery got stuffed compartment anchored downjust held hatch Big mistake second flight 25-28 oz fuel remaining hatch blew takeoff plane six eight feet air full throttle no radio banked gently left 900 began slow right climbing turn straight back over heads about 100 feet would fly straight turn right wind straight again awhile developed series long ovals moving wind east-southeast direction packed up dashed out onto highway firmly Lord Jesus Christ busy talking him buddy kept ship sight mile finally lost overcast sky immediate area rural large lake about three miles south several subdivisions plus city Covington east hoped plane would make lakeI didnt want see again called sheriffs department no report next morning young lady called say plane crashed back yard lives immediately next shopping center flanked rental store sonic drive-in evidently flew fairly gentle angle under big power line some pine trees lady wasnt too concerned said little ones usually played yard tiey werent home timeabout 600 pm figure Praise Lord ship relatively intact nose busted up engine firewall out leading edge left wing crushed elec tronics still work John what Im praising Lord about evidently flew circles over city just missed big shopping center Saturday after noon flew eight 10 miles flying field impact Im familiar Servo Guardbut can utilized retard throttle have total power failure may tell story admonition just stuff things together last minute did substitute bat tery would never have thought plane would have kept flying takeoff like Heck flew smoother Im controlling itdefinitely humbling experience Back days rudder-only RC models really no Free Flight models ability some Continued page 117 20Model Aviation VK MODEL AIRCRAFT CODud Roan New Jersey winning Camel 5866 Transit Rd Depew NY 14043Phone 716 684-5555 I-I 413 j 11 1isi 1 Beach Ave na Del Rey GA times control rudder flyaways common Todays models neutral stability superior aerobatic performance generally bite dust seconds after loss radio signal As Sam pointed out devices cur rently market will retard throttle event interference loss transmitter signalbut require power on-board battery pack order function readers have simple solution close engine throttle upon loss power onboard battery pack please drop line Meanwhile please make sure airborne battery packs wont ejected takeoff could result just embaTrassment Have safe month John Preston 12235 Tilden wood Dr Rockville MD 20852 Blue Max/Allen Continued page 29 elevator should glued now Remem ber have come up hatch area Make sure exit fuse lage sides far enough forward interfere rudder post Mount completed wing fuse lage. First open hole dowel will go center rib test-fit dowel glue Line up wing fuselage make sure centered square dowel temporarily place slide ply wing mount place dowel glue front F-2 move wing until glue dry triangle stock can now added front wing mount wing still place slide piece wax paper between wing TE fuselage rear mounting plate glued Use 5-mm epoxy glue ply plate place under wing Hold firmly against bottom wing until glue has set Remove wax paper double check make sure wing straight Now drill down through wing doublers through mounting plate Drill out hole wing /I6 tap hole plate 10-32 bolt Add baisa top block fuselage front wing top rear balsa crossgrain sheeting Tall surfaces Build over plan shown sure use spruce leap ing trailing edges stab Cut tle hole top fuselage sheeting clear x rudder post leave part out adds great deal strength installed fin Glue stab bottom fuse lage making sure properly aligned Glue fin sub-fin place Sand rudder tapered shape suggest cut out lightening holes shown plan tail Blue Max quite long everything rear should kept light possible Finishing touches Final-sand everything cover plane ironon covering materials strongly recom mend MonoKote its strength ease application also make hinges Out same material have never failure Install engine mount nose gear nose gear goes up through mount steering arm just below mount wheel collar either inside top mount hold gear place know someone coil bender strongly recommend use Y6-in wire nose gear heavyduty struts save lot props case bender available %2-in gear will work just fine Install tank run fuel lines through center mount Mount engine 6-32 bolts out mount far enough leave room fuel lines come through Mount rudder elevator servos back under hatch Make sure far enough rearward allow receiver placed just ahead Use cable pushrod go rudder servo nose gear cable housing should firmly glued down over its en tire length prevent flexing throttle servo mounted aileron ser vo tray just ahead F-3 flat floor cable pushrod should used throttle also Battery location fuselage depends needed balancing purposes normally under wing right behind tank aileron servo mounted wing rails installed earlier Use sheet metal screws attaching servo con ventional manner CG should fall somewhere between limits shown plan best way check CG place fingers under spars both sides wing slide fingers out equally both sides limits method shown wing plan Desired control throws starting ailerons Y6 up down elevator own rudder 1A left right throws will give easy-to-fly responsive airplane After some test flights throws can adjusted whatever flier feels comfortable first flight open throttle holding slight back pressure elevator will lift off ground about 30 40 feet Let clImb out can get feel way flies its up Blue Max very versatile airplane Continued page 120 February 1 98511 7 Safety/Preston Continued page 20
Edition: Model Aviation - 1985/02
Page Numbers: 13, 14, 16, 18, 20, 117
John Preston Safety Comes First Big four-stroke engines can hard props especially plastic ones Guard eyes squirt glow fuel can serious damage cure flyaway RC planes REVERSAL November 1984 issue MA column reported inci dents prop blades large-dis placement four-stroke engines shat tered may have due presence drive-pins prop drive washer Such pins intended prevent rotation prop respect prop drive washer event engine backfires prop nut will loosen nor will entire prop thrown off ap pears use drive-pins prevent such occurrence may cause prop blades thrown off during engine backfire opinion presents far greater risk injury During last month received let ter Clair Sieverling modeler Phoenix AZ injured 14 x 8 wood prop 120 four-stroke broke adjusting fuel mix ture engine equipped four safety bolts pass through holes drilled prop hub enter tapped holes prop drive washer Clairs ac count incident follows friend holding plane started engine let warm up somewhat low speed opened up running very well since still somewhat new fly little rich carefully reached around richened slightly directly line prop did know better anyway right As needle adjust ment took engine started run lit tle rougher would desired noise think backfire prop spinner shattered about tWo feet face hit neck something observers said looked like hit uppercut knocked rear got back up shut throttle stick down felt neck bleeding taken emergency room nearby hospital dug some pieces out found ligament exposed cut sewed up also relieved wallet price good sport radio spent very uncomfortable weekend say least spinner broken several pieces much like broken Coke bottle prop broken two through hub also directly through safety-bolt holes safety bolts sheared off flush engine thrust washer isnt certain whether hit parts spinner prop obvious fortunate wasnt much worseand perhaps fatal think should some serious re consideration using safety bolts through hub larger fourstroke engines prone back fire four-stroke 90 backfired air also shattered prop spinner same manner also safety-bolted have seen props spinners come off running engine desirable generally hit ground front plane seem have energy single pieces flying around have think safety bolts four-stroke backfires good chance will loosen prop nut prop will simply windmill does come off wont dangerous obvious prop will less likely break free give little time backfire Just few days ago received letter Peter Miller British modeler written after read November safety Continued page 14 II 7___ NOW ASK YA EVER FATIGUE LIKE. ThAT SEEN PROP 3EFQRE February 198513 SAFETY ALERT To Owners large tour-stroke engines Subject Propeller drive pins Several brands models four-stroke model airplane en gines displacements 081 Cu up equipped propeller drive pins prop drive washer happen own such engine strongly recommended use drive pins Astounding realism auainaie plastics.. Very light weight discriminating hobblest. Either Pilot version kit.. Sportsman Barnstormer.. Darn Good Airmen .. complete NEW LOW PRICES 01/6 Scale $595 1/4 Scale $795 1/3 Scale 142 S Dealer add Dollar direct order handling VIDEO PROGRAMS NEWAIRPLANEFUNNIESII wildest Creiiest wackiest insane video ever 30 minutes aeromodellng insanity Gremlins working overtime RENTBUY 14954495 13954495 13954495 12953995 14953995 OTHER GREAT VIDEOS 1 BASIC CONSTRUCTION FOR 8EGINNERS IN RIC90 Mm 2 BASIC FLIGHT TRAINING FOR BEGINNERS IN AIC50 Mm Professional step step Instruction Z 3 THE WORLD OF MODEL AVIATION90 Mm Expos static displays AMA NATS scale 4 OSHKOSH OVERVIEW55 Mm Workshops Air Shows Warbirds 5 AIRPLANE FUNNIES II30 Mm ORDERING INFORMATION Programs may rented wloption purchase Duration rentals 3 days Program No lieS days Send Check Money Order full purchsse price tape ordered renting balance will relunded upon return 01 programs ordering specify date desired Club meetings order well advance Allow 10 days checks clear Illinois Residents include 8 per cent tax Shipping charge $300 purchase $450 rental Return postage included VHS ONLY SEND ORDERS TO ACADEMY OF AVIATION RESEARCH AND DEVELOPMENT POBOX 428139 CHICAGO ILLINOIS 312 8740456 column article Concerning drive pins props four-stroke engines Niel Tidey designer very power ful Laser 61 four-cycle tells modelers using ordinary nylon props because lower rpm four-cycles dangerous Due powerful long power stroke hub accelerated prop tips tend lag behind engine comes up compression hub braked and prop tips carry due flywheel effect prop therefore flexing chordwise direction due shape probably twisting sets up fatigue very quickly prop fails chap three brand name 12 x 6 props fail after other Glass-filled nylon ones seem OK wood ones OK cant help wondering failures pinned props may caused hub cannot move flexing concentrated unpinned hubs allow slight movement prop hub theory first part letter fact doubt Petes theory fatigue ing reason nylon prop failure also applies pinned wooden props fourstrokes since wood best knowledge subject fatigue failure However believe sug gestion inability pinned prop move relative drive washer leading cause reported failures Perhaps need special design prop use four-stroke engine going attached multiple bolts pins through hub prop larger diameter hub correspondingly larger-diameter drive washer may whats called Considering quantity fuel must burned year model airplane boat car enthusiasts hear very few incidents fuel asso ciated injury Im sure know death could result drink Thats Federal Government re quires sold container child-proof cap However wonder aware consequenc es getting fuel eye Al Johnson member Cloud Kings RC club recently wrote told about fuel-in-the-eye incident experienced Henry Haffke should need no intro duction since well-known Gee Bee models articles about appear frequently modeling press recently wrote Henry asked him drop line describ ing incident think will agree based following extracts Henrys response fuel eye avoided costs club conducting big Giant Continued page 16 LEADER IN SMALL AIRFOIL TECHNOLOGY MAStER AIRSCREW new K Series family propellers has introduced three sizes 14 x 614 x 8 16 x 6 large propellers have wider blades thinner airfoil sections best performance fourstroke engines will also work very well two-strokes Mold ed same tough glass-filled nylon GIF 1/2A Series props have same incredible strength durability Planned future releases series 12 x 6 16 x 8 Priced $395 $495 WINDSOR PROPELLER CO 384 Tesconi Ct Santa Rosa Cailt 95401 U.d MAA int,t FiyI7050dfl NYS Ridn dd 7% 5NYia * * * * * * * * * * * * * * K 16Model Aviation 3-4 Channel RIC Systems$3995 Balsa Construction add $2 postage/handling 55 Wingspan 35 45 Engines Scale Fly-In Miliville airport Sunday took three /4-scale Gee Bees R-1 Model Y Model D out field Saturday check Out make sure flying right Sunday show flown R-l Model D getting Y ready fly flew once made some ad justments process refuel ling second flight using powerful hand-cranked rotary pump some unknown reason wearing sunglasses never fly head over pump feed line came off got good squirt fuel directly right eye splash direct stream right eye pain horrendous thought bottle water keep car case overheating trouble guys club poured entire two-liter bottle eye didnt seem help much eye swelled closed completely just couple minutes Another club member lives near field went home brought back some Visine put eye didnt seem good either guys took ships apart put station wagon drove home about 10 miles immediately called eye doctor Though immedi ately reachable office said would try get him have him give call pain terrible after about 15 minutes asked daughter take hospital emergency room Before reached counter emergency room normal routine filling out papers answer ing questions performed nurse very good friend saw asked what happened As soon realized trouble whisked off treat ment room told daugher take care red tape nurse immediate ly flowed something eye believe saline solution immediately stopped terrible pain Meanwhile eye doctor called house found way hospital called gave instructions what time much comfortable still couldnt see out eye put patch over gave some drops put periodically doctor met office Sun day morning upon examination eye told entire surface burned away also said damage done first three sec onds though did everything could time nothing could have prevented damage felt given proper treatment time eye would rejuvenate itself its normal con dition wanted patch kept week dont remember just long did just what told sight started to return four five Continued page 18 handing line. complete line decals available model anywhere 6 NEW KILL MARKING SHEETS 70 insignia sheets also letters numbers 0 majordecals available popular oaaoaoo 40-60 sizes plus Giant Scale American sizes believe majordecals have comprehensive assortment available now sizes styles coming time pressure sensitive water transfer DISTRIBUTORS INQUIRIES INVITED CONTACT YOUR LOCAL HO8BY SHOP OR WRITE DIRECT Well bet line youll love being handed LETTERS ANDPROP DECALS NUMBERSFULL COLOR IN 10 COLORSFFALSTANDARD PRESSURE SENSITIVE andHARTZELL-PRATT & WHITNEY WATER TRANSFER.10 dia thru 1/4 scale props L NORTHEAST SCREEN GRAPHICS 21 FISHER AVE EA5T LONGMEAOOW MA 01025 TEL 413-525-4110 World War isnt Quite Over Yet EINDECKER E-III -SNJ 101 Wing 2te Co flgfln LIANT RIC SCALE Marane SAULNIER N * SnootlEolly Moldod FIbongla. Poalago1500 Sq AroSeauttot reA prodAChon nits Old * OaEattMoIdd Tanparnt Canopythe rogeed cOnstruCtiOfl die-Cut parts Both have * EoRRd FtbeRIaaa Moldod Eoglo CowlIng COmplete Kit $27500a hiStoty Contest eitts Easy baud SapeEb Ilight * Plywood FInawalt Hordwaeo Inctododpius 51000 shryprog & hauntliegPlease add $2 postage/handling * Fond dia tandioR Goon togAny eCOSS * Rollad Plan InoErodlonNT residents dad , ,* Dealer InQuiries Now Invited$4395 Standard Class2-Meter Class $7999 UltimateLittle 5copion $5999 * Sleek T-Tail design * Spoilers Spot Landings * * Cloth Wing Covers $1500 pair F ox Models * Foam Wing Construction * Strong Easy Build Fuselage * Eppler 193 Air Foil days just fuzzy images able remove eye patch good sight poor improving slowly Driving little problem since sort double vision multiplied distance instance white line middle road started separating ahead spread apart looked up road doctor treated about two weeks before released told eye would straighten out completelybut would take some time OK vision still distorted Back Fly-In day after eye accident Since seeing out eye couldnt fly models flown friend Sid thousands people come see models full-scale aircraft ultralights balloon really big affair About month later wanted fly Scale contest couple days before tried fly Kaos did sort foolish thing took model off out anyone else around immediately wished hadnt two airplanes sky wasnt best situa tions Fortunately model light could fly very slow managed land OK wasnt ready fly yet eye continued improve would guess after period about two months just about back t6 nor mal thing still noticeable time splitting apart white line down road took about four months before disappeared com pletely Now eye completely back normal have no further trou bles Im sure would have fortunate immediately gotten touch eye doctor top man think Henrys account accident sufficiently graphic really dont have tell careful pump ing fuel either out model Ive suggested use safety glasses previously As Henry stated wearing usual pair sunglasses could have saved himself lot pain anguish letter Sam Hopkins modeler Folsom LA related unusual story concerning flight Giant Scale plane powered 24 cu Big Banger weighing 22 lb Generally speaking loss radio coniniand during flight RC model brings about abrupt termination flight Once radio fails flight model will have sufficient inherent stabili ty continue fly free-flight mode Such case following account Sam Last Saturday August 11 friend went newly-developed field fly Wed scattered thunderstorms Continued page 20 18 Model Aviation Scorpion 8- Little Scorpion JSPARROWHAWK 1/32 SCALE PLASTIC MODEL KIT US Navy Sparrowhawks operated two dirigibles aircraft carrieKduring 1930s among colorful aircraft aviations Golden Age KIT FEATURES U Decals permit finishing model six different Sprrowhawks U Two types wheels hard flexible tires U Monofilament rigging U Detailed interior Send $1 complete catalog kits accessories Dept MA WILLIAMS BROTHERS INC 181 PAWNEE ST SAN MARCOS 92069 CAMEL 1st LANE 2nd AMA SCALE RHINEBECK 84 Manouevers84 2nd Camel B Roane 3rd Triplane B Mackey Send $100 complete literature price list VK kits WW accessories day no else usually use 2 x 5 battery system some cor rosion problems substituted regular switch harness single fourcell four-amp pack pack didnt fit usual battery compartment under cockpit accessible wing removed have hatch aft wing receiver 2 x 5 unit secured substitute battery got stuffed compartment anchored downjust held hatch Big mistake second flight 25-28 oz fuel remaining hatch blew takeoff plane six eight feet air full throttle no radio banked gently left 900 began slow right climbing turn straight back over heads about 100 feet would fly straight turn right wind straight again awhile developed series long ovals moving wind east-southeast direction packed up dashed out onto highway firmly Lord Jesus Christ busy talking him buddy kept ship sight mile finally lost overcast sky immediate area rural large lake about three miles south several subdivisions plus city Covington east hoped plane would make lakeI didnt want see again called sheriffs department no report next morning young lady called say plane crashed back yard lives immediately next shopping center flanked rental store sonic drive-in evidently flew fairly gentle angle under big power line some pine trees lady wasnt too concerned said little ones usually played yard tiey werent home timeabout 600 pm figure Praise Lord ship relatively intact nose busted up engine firewall out leading edge left wing crushed elec tronics still work John what Im praising Lord about evidently flew circles over city just missed big shopping center Saturday after noon flew eight 10 miles flying field impact Im familiar Servo Guardbut can utilized retard throttle have total power failure may tell story admonition just stuff things together last minute did substitute bat tery would never have thought plane would have kept flying takeoff like Heck flew smoother Im controlling itdefinitely humbling experience Back days rudder-only RC models really no Free Flight models ability some Continued page 117 20Model Aviation VK MODEL AIRCRAFT CODud Roan New Jersey winning Camel 5866 Transit Rd Depew NY 14043Phone 716 684-5555 I-I 413 j 11 1isi 1 Beach Ave na Del Rey GA times control rudder flyaways common Todays models neutral stability superior aerobatic performance generally bite dust seconds after loss radio signal As Sam pointed out devices cur rently market will retard throttle event interference loss transmitter signalbut require power on-board battery pack order function readers have simple solution close engine throttle upon loss power onboard battery pack please drop line Meanwhile please make sure airborne battery packs wont ejected takeoff could result just embaTrassment Have safe month John Preston 12235 Tilden wood Dr Rockville MD 20852 Blue Max/Allen Continued page 29 elevator should glued now Remem ber have come up hatch area Make sure exit fuse lage sides far enough forward interfere rudder post Mount completed wing fuse lage. First open hole dowel will go center rib test-fit dowel glue Line up wing fuselage make sure centered square dowel temporarily place slide ply wing mount place dowel glue front F-2 move wing until glue dry triangle stock can now added front wing mount wing still place slide piece wax paper between wing TE fuselage rear mounting plate glued Use 5-mm epoxy glue ply plate place under wing Hold firmly against bottom wing until glue has set Remove wax paper double check make sure wing straight Now drill down through wing doublers through mounting plate Drill out hole wing /I6 tap hole plate 10-32 bolt Add baisa top block fuselage front wing top rear balsa crossgrain sheeting Tall surfaces Build over plan shown sure use spruce leap ing trailing edges stab Cut tle hole top fuselage sheeting clear x rudder post leave part out adds great deal strength installed fin Glue stab bottom fuse lage making sure properly aligned Glue fin sub-fin place Sand rudder tapered shape suggest cut out lightening holes shown plan tail Blue Max quite long everything rear should kept light possible Finishing touches Final-sand everything cover plane ironon covering materials strongly recom mend MonoKote its strength ease application also make hinges Out same material have never failure Install engine mount nose gear nose gear goes up through mount steering arm just below mount wheel collar either inside top mount hold gear place know someone coil bender strongly recommend use Y6-in wire nose gear heavyduty struts save lot props case bender available %2-in gear will work just fine Install tank run fuel lines through center mount Mount engine 6-32 bolts out mount far enough leave room fuel lines come through Mount rudder elevator servos back under hatch Make sure far enough rearward allow receiver placed just ahead Use cable pushrod go rudder servo nose gear cable housing should firmly glued down over its en tire length prevent flexing throttle servo mounted aileron ser vo tray just ahead F-3 flat floor cable pushrod should used throttle also Battery location fuselage depends needed balancing purposes normally under wing right behind tank aileron servo mounted wing rails installed earlier Use sheet metal screws attaching servo con ventional manner CG should fall somewhere between limits shown plan best way check CG place fingers under spars both sides wing slide fingers out equally both sides limits method shown wing plan Desired control throws starting ailerons Y6 up down elevator own rudder 1A left right throws will give easy-to-fly responsive airplane After some test flights throws can adjusted whatever flier feels comfortable first flight open throttle holding slight back pressure elevator will lift off ground about 30 40 feet Let clImb out can get feel way flies its up Blue Max very versatile airplane Continued page 120 February 1 98511 7 Safety/Preston Continued page 20
Edition: Model Aviation - 1985/02
Page Numbers: 13, 14, 16, 18, 20, 117
John Preston Safety Comes First Big four-stroke engines can hard props especially plastic ones Guard eyes squirt glow fuel can serious damage cure flyaway RC planes REVERSAL November 1984 issue MA column reported inci dents prop blades large-dis placement four-stroke engines shat tered may have due presence drive-pins prop drive washer Such pins intended prevent rotation prop respect prop drive washer event engine backfires prop nut will loosen nor will entire prop thrown off ap pears use drive-pins prevent such occurrence may cause prop blades thrown off during engine backfire opinion presents far greater risk injury During last month received let ter Clair Sieverling modeler Phoenix AZ injured 14 x 8 wood prop 120 four-stroke broke adjusting fuel mix ture engine equipped four safety bolts pass through holes drilled prop hub enter tapped holes prop drive washer Clairs ac count incident follows friend holding plane started engine let warm up somewhat low speed opened up running very well since still somewhat new fly little rich carefully reached around richened slightly directly line prop did know better anyway right As needle adjust ment took engine started run lit tle rougher would desired noise think backfire prop spinner shattered about tWo feet face hit neck something observers said looked like hit uppercut knocked rear got back up shut throttle stick down felt neck bleeding taken emergency room nearby hospital dug some pieces out found ligament exposed cut sewed up also relieved wallet price good sport radio spent very uncomfortable weekend say least spinner broken several pieces much like broken Coke bottle prop broken two through hub also directly through safety-bolt holes safety bolts sheared off flush engine thrust washer isnt certain whether hit parts spinner prop obvious fortunate wasnt much worseand perhaps fatal think should some serious re consideration using safety bolts through hub larger fourstroke engines prone back fire four-stroke 90 backfired air also shattered prop spinner same manner also safety-bolted have seen props spinners come off running engine desirable generally hit ground front plane seem have energy single pieces flying around have think safety bolts four-stroke backfires good chance will loosen prop nut prop will simply windmill does come off wont dangerous obvious prop will less likely break free give little time backfire Just few days ago received letter Peter Miller British modeler written after read November safety Continued page 14 II 7___ NOW ASK YA EVER FATIGUE LIKE. ThAT SEEN PROP 3EFQRE February 198513 SAFETY ALERT To Owners large tour-stroke engines Subject Propeller drive pins Several brands models four-stroke model airplane en gines displacements 081 Cu up equipped propeller drive pins prop drive washer happen own such engine strongly recommended use drive pins Astounding realism auainaie plastics.. Very light weight discriminating hobblest. Either Pilot version kit.. Sportsman Barnstormer.. Darn Good Airmen .. complete NEW LOW PRICES 01/6 Scale $595 1/4 Scale $795 1/3 Scale 142 S Dealer add Dollar direct order handling VIDEO PROGRAMS NEWAIRPLANEFUNNIESII wildest Creiiest wackiest insane video ever 30 minutes aeromodellng insanity Gremlins working overtime RENTBUY 14954495 13954495 13954495 12953995 14953995 OTHER GREAT VIDEOS 1 BASIC CONSTRUCTION FOR 8EGINNERS IN RIC90 Mm 2 BASIC FLIGHT TRAINING FOR BEGINNERS IN AIC50 Mm Professional step step Instruction Z 3 THE WORLD OF MODEL AVIATION90 Mm Expos static displays AMA NATS scale 4 OSHKOSH OVERVIEW55 Mm Workshops Air Shows Warbirds 5 AIRPLANE FUNNIES II30 Mm ORDERING INFORMATION Programs may rented wloption purchase Duration rentals 3 days Program No lieS days Send Check Money Order full purchsse price tape ordered renting balance will relunded upon return 01 programs ordering specify date desired Club meetings order well advance Allow 10 days checks clear Illinois Residents include 8 per cent tax Shipping charge $300 purchase $450 rental Return postage included VHS ONLY SEND ORDERS TO ACADEMY OF AVIATION RESEARCH AND DEVELOPMENT POBOX 428139 CHICAGO ILLINOIS 312 8740456 column article Concerning drive pins props four-stroke engines Niel Tidey designer very power ful Laser 61 four-cycle tells modelers using ordinary nylon props because lower rpm four-cycles dangerous Due powerful long power stroke hub accelerated prop tips tend lag behind engine comes up compression hub braked and prop tips carry due flywheel effect prop therefore flexing chordwise direction due shape probably twisting sets up fatigue very quickly prop fails chap three brand name 12 x 6 props fail after other Glass-filled nylon ones seem OK wood ones OK cant help wondering failures pinned props may caused hub cannot move flexing concentrated unpinned hubs allow slight movement prop hub theory first part letter fact doubt Petes theory fatigue ing reason nylon prop failure also applies pinned wooden props fourstrokes since wood best knowledge subject fatigue failure However believe sug gestion inability pinned prop move relative drive washer leading cause reported failures Perhaps need special design prop use four-stroke engine going attached multiple bolts pins through hub prop larger diameter hub correspondingly larger-diameter drive washer may whats called Considering quantity fuel must burned year model airplane boat car enthusiasts hear very few incidents fuel asso ciated injury Im sure know death could result drink Thats Federal Government re quires sold container child-proof cap However wonder aware consequenc es getting fuel eye Al Johnson member Cloud Kings RC club recently wrote told about fuel-in-the-eye incident experienced Henry Haffke should need no intro duction since well-known Gee Bee models articles about appear frequently modeling press recently wrote Henry asked him drop line describ ing incident think will agree based following extracts Henrys response fuel eye avoided costs club conducting big Giant Continued page 16 LEADER IN SMALL AIRFOIL TECHNOLOGY MAStER AIRSCREW new K Series family propellers has introduced three sizes 14 x 614 x 8 16 x 6 large propellers have wider blades thinner airfoil sections best performance fourstroke engines will also work very well two-strokes Mold ed same tough glass-filled nylon GIF 1/2A Series props have same incredible strength durability Planned future releases series 12 x 6 16 x 8 Priced $395 $495 WINDSOR PROPELLER CO 384 Tesconi Ct Santa Rosa Cailt 95401 U.d MAA int,t FiyI7050dfl NYS Ridn dd 7% 5NYia * * * * * * * * * * * * * * K 16Model Aviation 3-4 Channel RIC Systems$3995 Balsa Construction add $2 postage/handling 55 Wingspan 35 45 Engines Scale Fly-In Miliville airport Sunday took three /4-scale Gee Bees R-1 Model Y Model D out field Saturday check Out make sure flying right Sunday show flown R-l Model D getting Y ready fly flew once made some ad justments process refuel ling second flight using powerful hand-cranked rotary pump some unknown reason wearing sunglasses never fly head over pump feed line came off got good squirt fuel directly right eye splash direct stream right eye pain horrendous thought bottle water keep car case overheating trouble guys club poured entire two-liter bottle eye didnt seem help much eye swelled closed completely just couple minutes Another club member lives near field went home brought back some Visine put eye didnt seem good either guys took ships apart put station wagon drove home about 10 miles immediately called eye doctor Though immedi ately reachable office said would try get him have him give call pain terrible after about 15 minutes asked daughter take hospital emergency room Before reached counter emergency room normal routine filling out papers answer ing questions performed nurse very good friend saw asked what happened As soon realized trouble whisked off treat ment room told daugher take care red tape nurse immediate ly flowed something eye believe saline solution immediately stopped terrible pain Meanwhile eye doctor called house found way hospital called gave instructions what time much comfortable still couldnt see out eye put patch over gave some drops put periodically doctor met office Sun day morning upon examination eye told entire surface burned away also said damage done first three sec onds though did everything could time nothing could have prevented damage felt given proper treatment time eye would rejuvenate itself its normal con dition wanted patch kept week dont remember just long did just what told sight started to return four five Continued page 18 handing line. complete line decals available model anywhere 6 NEW KILL MARKING SHEETS 70 insignia sheets also letters numbers 0 majordecals available popular oaaoaoo 40-60 sizes plus Giant Scale American sizes believe majordecals have comprehensive assortment available now sizes styles coming time pressure sensitive water transfer DISTRIBUTORS INQUIRIES INVITED CONTACT YOUR LOCAL HO8BY SHOP OR WRITE DIRECT Well bet line youll love being handed LETTERS ANDPROP DECALS NUMBERSFULL COLOR IN 10 COLORSFFALSTANDARD PRESSURE SENSITIVE andHARTZELL-PRATT & WHITNEY WATER TRANSFER.10 dia thru 1/4 scale props L NORTHEAST SCREEN GRAPHICS 21 FISHER AVE EA5T LONGMEAOOW MA 01025 TEL 413-525-4110 World War isnt Quite Over Yet EINDECKER E-III -SNJ 101 Wing 2te Co flgfln LIANT RIC SCALE Marane SAULNIER N * SnootlEolly Moldod FIbongla. Poalago1500 Sq AroSeauttot reA prodAChon nits Old * OaEattMoIdd Tanparnt Canopythe rogeed cOnstruCtiOfl die-Cut parts Both have * EoRRd FtbeRIaaa Moldod Eoglo CowlIng COmplete Kit $27500a hiStoty Contest eitts Easy baud SapeEb Ilight * Plywood FInawalt Hordwaeo Inctododpius 51000 shryprog & hauntliegPlease add $2 postage/handling * Fond dia tandioR Goon togAny eCOSS * Rollad Plan InoErodlonNT residents dad , ,* Dealer InQuiries Now Invited$4395 Standard Class2-Meter Class $7999 UltimateLittle 5copion $5999 * Sleek T-Tail design * Spoilers Spot Landings * * Cloth Wing Covers $1500 pair F ox Models * Foam Wing Construction * Strong Easy Build Fuselage * Eppler 193 Air Foil days just fuzzy images able remove eye patch good sight poor improving slowly Driving little problem since sort double vision multiplied distance instance white line middle road started separating ahead spread apart looked up road doctor treated about two weeks before released told eye would straighten out completelybut would take some time OK vision still distorted Back Fly-In day after eye accident Since seeing out eye couldnt fly models flown friend Sid thousands people come see models full-scale aircraft ultralights balloon really big affair About month later wanted fly Scale contest couple days before tried fly Kaos did sort foolish thing took model off out anyone else around immediately wished hadnt two airplanes sky wasnt best situa tions Fortunately model light could fly very slow managed land OK wasnt ready fly yet eye continued improve would guess after period about two months just about back t6 nor mal thing still noticeable time splitting apart white line down road took about four months before disappeared com pletely Now eye completely back normal have no further trou bles Im sure would have fortunate immediately gotten touch eye doctor top man think Henrys account accident sufficiently graphic really dont have tell careful pump ing fuel either out model Ive suggested use safety glasses previously As Henry stated wearing usual pair sunglasses could have saved himself lot pain anguish letter Sam Hopkins modeler Folsom LA related unusual story concerning flight Giant Scale plane powered 24 cu Big Banger weighing 22 lb Generally speaking loss radio coniniand during flight RC model brings about abrupt termination flight Once radio fails flight model will have sufficient inherent stabili ty continue fly free-flight mode Such case following account Sam Last Saturday August 11 friend went newly-developed field fly Wed scattered thunderstorms Continued page 20 18 Model Aviation Scorpion 8- Little Scorpion JSPARROWHAWK 1/32 SCALE PLASTIC MODEL KIT US Navy Sparrowhawks operated two dirigibles aircraft carrieKduring 1930s among colorful aircraft aviations Golden Age KIT FEATURES U Decals permit finishing model six different Sprrowhawks U Two types wheels hard flexible tires U Monofilament rigging U Detailed interior Send $1 complete catalog kits accessories Dept MA WILLIAMS BROTHERS INC 181 PAWNEE ST SAN MARCOS 92069 CAMEL 1st LANE 2nd AMA SCALE RHINEBECK 84 Manouevers84 2nd Camel B Roane 3rd Triplane B Mackey Send $100 complete literature price list VK kits WW accessories day no else usually use 2 x 5 battery system some cor rosion problems substituted regular switch harness single fourcell four-amp pack pack didnt fit usual battery compartment under cockpit accessible wing removed have hatch aft wing receiver 2 x 5 unit secured substitute battery got stuffed compartment anchored downjust held hatch Big mistake second flight 25-28 oz fuel remaining hatch blew takeoff plane six eight feet air full throttle no radio banked gently left 900 began slow right climbing turn straight back over heads about 100 feet would fly straight turn right wind straight again awhile developed series long ovals moving wind east-southeast direction packed up dashed out onto highway firmly Lord Jesus Christ busy talking him buddy kept ship sight mile finally lost overcast sky immediate area rural large lake about three miles south several subdivisions plus city Covington east hoped plane would make lakeI didnt want see again called sheriffs department no report next morning young lady called say plane crashed back yard lives immediately next shopping center flanked rental store sonic drive-in evidently flew fairly gentle angle under big power line some pine trees lady wasnt too concerned said little ones usually played yard tiey werent home timeabout 600 pm figure Praise Lord ship relatively intact nose busted up engine firewall out leading edge left wing crushed elec tronics still work John what Im praising Lord about evidently flew circles over city just missed big shopping center Saturday after noon flew eight 10 miles flying field impact Im familiar Servo Guardbut can utilized retard throttle have total power failure may tell story admonition just stuff things together last minute did substitute bat tery would never have thought plane would have kept flying takeoff like Heck flew smoother Im controlling itdefinitely humbling experience Back days rudder-only RC models really no Free Flight models ability some Continued page 117 20Model Aviation VK MODEL AIRCRAFT CODud Roan New Jersey winning Camel 5866 Transit Rd Depew NY 14043Phone 716 684-5555 I-I 413 j 11 1isi 1 Beach Ave na Del Rey GA times control rudder flyaways common Todays models neutral stability superior aerobatic performance generally bite dust seconds after loss radio signal As Sam pointed out devices cur rently market will retard throttle event interference loss transmitter signalbut require power on-board battery pack order function readers have simple solution close engine throttle upon loss power onboard battery pack please drop line Meanwhile please make sure airborne battery packs wont ejected takeoff could result just embaTrassment Have safe month John Preston 12235 Tilden wood Dr Rockville MD 20852 Blue Max/Allen Continued page 29 elevator should glued now Remem ber have come up hatch area Make sure exit fuse lage sides far enough forward interfere rudder post Mount completed wing fuse lage. First open hole dowel will go center rib test-fit dowel glue Line up wing fuselage make sure centered square dowel temporarily place slide ply wing mount place dowel glue front F-2 move wing until glue dry triangle stock can now added front wing mount wing still place slide piece wax paper between wing TE fuselage rear mounting plate glued Use 5-mm epoxy glue ply plate place under wing Hold firmly against bottom wing until glue has set Remove wax paper double check make sure wing straight Now drill down through wing doublers through mounting plate Drill out hole wing /I6 tap hole plate 10-32 bolt Add baisa top block fuselage front wing top rear balsa crossgrain sheeting Tall surfaces Build over plan shown sure use spruce leap ing trailing edges stab Cut tle hole top fuselage sheeting clear x rudder post leave part out adds great deal strength installed fin Glue stab bottom fuse lage making sure properly aligned Glue fin sub-fin place Sand rudder tapered shape suggest cut out lightening holes shown plan tail Blue Max quite long everything rear should kept light possible Finishing touches Final-sand everything cover plane ironon covering materials strongly recom mend MonoKote its strength ease application also make hinges Out same material have never failure Install engine mount nose gear nose gear goes up through mount steering arm just below mount wheel collar either inside top mount hold gear place know someone coil bender strongly recommend use Y6-in wire nose gear heavyduty struts save lot props case bender available %2-in gear will work just fine Install tank run fuel lines through center mount Mount engine 6-32 bolts out mount far enough leave room fuel lines come through Mount rudder elevator servos back under hatch Make sure far enough rearward allow receiver placed just ahead Use cable pushrod go rudder servo nose gear cable housing should firmly glued down over its en tire length prevent flexing throttle servo mounted aileron ser vo tray just ahead F-3 flat floor cable pushrod should used throttle also Battery location fuselage depends needed balancing purposes normally under wing right behind tank aileron servo mounted wing rails installed earlier Use sheet metal screws attaching servo con ventional manner CG should fall somewhere between limits shown plan best way check CG place fingers under spars both sides wing slide fingers out equally both sides limits method shown wing plan Desired control throws starting ailerons Y6 up down elevator own rudder 1A left right throws will give easy-to-fly responsive airplane After some test flights throws can adjusted whatever flier feels comfortable first flight open throttle holding slight back pressure elevator will lift off ground about 30 40 feet Let clImb out can get feel way flies its up Blue Max very versatile airplane Continued page 120 February 1 98511 7 Safety/Preston Continued page 20
Edition: Model Aviation - 1985/02
Page Numbers: 13, 14, 16, 18, 20, 117
John Preston Safety Comes First Big four-stroke engines can hard props especially plastic ones Guard eyes squirt glow fuel can serious damage cure flyaway RC planes REVERSAL November 1984 issue MA column reported inci dents prop blades large-dis placement four-stroke engines shat tered may have due presence drive-pins prop drive washer Such pins intended prevent rotation prop respect prop drive washer event engine backfires prop nut will loosen nor will entire prop thrown off ap pears use drive-pins prevent such occurrence may cause prop blades thrown off during engine backfire opinion presents far greater risk injury During last month received let ter Clair Sieverling modeler Phoenix AZ injured 14 x 8 wood prop 120 four-stroke broke adjusting fuel mix ture engine equipped four safety bolts pass through holes drilled prop hub enter tapped holes prop drive washer Clairs ac count incident follows friend holding plane started engine let warm up somewhat low speed opened up running very well since still somewhat new fly little rich carefully reached around richened slightly directly line prop did know better anyway right As needle adjust ment took engine started run lit tle rougher would desired noise think backfire prop spinner shattered about tWo feet face hit neck something observers said looked like hit uppercut knocked rear got back up shut throttle stick down felt neck bleeding taken emergency room nearby hospital dug some pieces out found ligament exposed cut sewed up also relieved wallet price good sport radio spent very uncomfortable weekend say least spinner broken several pieces much like broken Coke bottle prop broken two through hub also directly through safety-bolt holes safety bolts sheared off flush engine thrust washer isnt certain whether hit parts spinner prop obvious fortunate wasnt much worseand perhaps fatal think should some serious re consideration using safety bolts through hub larger fourstroke engines prone back fire four-stroke 90 backfired air also shattered prop spinner same manner also safety-bolted have seen props spinners come off running engine desirable generally hit ground front plane seem have energy single pieces flying around have think safety bolts four-stroke backfires good chance will loosen prop nut prop will simply windmill does come off wont dangerous obvious prop will less likely break free give little time backfire Just few days ago received letter Peter Miller British modeler written after read November safety Continued page 14 II 7___ NOW ASK YA EVER FATIGUE LIKE. ThAT SEEN PROP 3EFQRE February 198513 SAFETY ALERT To Owners large tour-stroke engines Subject Propeller drive pins Several brands models four-stroke model airplane en gines displacements 081 Cu up equipped propeller drive pins prop drive washer happen own such engine strongly recommended use drive pins Astounding realism auainaie plastics.. Very light weight discriminating hobblest. Either Pilot version kit.. Sportsman Barnstormer.. Darn Good Airmen .. complete NEW LOW PRICES 01/6 Scale $595 1/4 Scale $795 1/3 Scale 142 S Dealer add Dollar direct order handling VIDEO PROGRAMS NEWAIRPLANEFUNNIESII wildest Creiiest wackiest insane video ever 30 minutes aeromodellng insanity Gremlins working overtime RENTBUY 14954495 13954495 13954495 12953995 14953995 OTHER GREAT VIDEOS 1 BASIC CONSTRUCTION FOR 8EGINNERS IN RIC90 Mm 2 BASIC FLIGHT TRAINING FOR BEGINNERS IN AIC50 Mm Professional step step Instruction Z 3 THE WORLD OF MODEL AVIATION90 Mm Expos static displays AMA NATS scale 4 OSHKOSH OVERVIEW55 Mm Workshops Air Shows Warbirds 5 AIRPLANE FUNNIES II30 Mm ORDERING INFORMATION Programs may rented wloption purchase Duration rentals 3 days Program No lieS days Send Check Money Order full purchsse price tape ordered renting balance will relunded upon return 01 programs ordering specify date desired Club meetings order well advance Allow 10 days checks clear Illinois Residents include 8 per cent tax Shipping charge $300 purchase $450 rental Return postage included VHS ONLY SEND ORDERS TO ACADEMY OF AVIATION RESEARCH AND DEVELOPMENT POBOX 428139 CHICAGO ILLINOIS 312 8740456 column article Concerning drive pins props four-stroke engines Niel Tidey designer very power ful Laser 61 four-cycle tells modelers using ordinary nylon props because lower rpm four-cycles dangerous Due powerful long power stroke hub accelerated prop tips tend lag behind engine comes up compression hub braked and prop tips carry due flywheel effect prop therefore flexing chordwise direction due shape probably twisting sets up fatigue very quickly prop fails chap three brand name 12 x 6 props fail after other Glass-filled nylon ones seem OK wood ones OK cant help wondering failures pinned props may caused hub cannot move flexing concentrated unpinned hubs allow slight movement prop hub theory first part letter fact doubt Petes theory fatigue ing reason nylon prop failure also applies pinned wooden props fourstrokes since wood best knowledge subject fatigue failure However believe sug gestion inability pinned prop move relative drive washer leading cause reported failures Perhaps need special design prop use four-stroke engine going attached multiple bolts pins through hub prop larger diameter hub correspondingly larger-diameter drive washer may whats called Considering quantity fuel must burned year model airplane boat car enthusiasts hear very few incidents fuel asso ciated injury Im sure know death could result drink Thats Federal Government re quires sold container child-proof cap However wonder aware consequenc es getting fuel eye Al Johnson member Cloud Kings RC club recently wrote told about fuel-in-the-eye incident experienced Henry Haffke should need no intro duction since well-known Gee Bee models articles about appear frequently modeling press recently wrote Henry asked him drop line describ ing incident think will agree based following extracts Henrys response fuel eye avoided costs club conducting big Giant Continued page 16 LEADER IN SMALL AIRFOIL TECHNOLOGY MAStER AIRSCREW new K Series family propellers has introduced three sizes 14 x 614 x 8 16 x 6 large propellers have wider blades thinner airfoil sections best performance fourstroke engines will also work very well two-strokes Mold ed same tough glass-filled nylon GIF 1/2A Series props have same incredible strength durability Planned future releases series 12 x 6 16 x 8 Priced $395 $495 WINDSOR PROPELLER CO 384 Tesconi Ct Santa Rosa Cailt 95401 U.d MAA int,t FiyI7050dfl NYS Ridn dd 7% 5NYia * * * * * * * * * * * * * * K 16Model Aviation 3-4 Channel RIC Systems$3995 Balsa Construction add $2 postage/handling 55 Wingspan 35 45 Engines Scale Fly-In Miliville airport Sunday took three /4-scale Gee Bees R-1 Model Y Model D out field Saturday check Out make sure flying right Sunday show flown R-l Model D getting Y ready fly flew once made some ad justments process refuel ling second flight using powerful hand-cranked rotary pump some unknown reason wearing sunglasses never fly head over pump feed line came off got good squirt fuel directly right eye splash direct stream right eye pain horrendous thought bottle water keep car case overheating trouble guys club poured entire two-liter bottle eye didnt seem help much eye swelled closed completely just couple minutes Another club member lives near field went home brought back some Visine put eye didnt seem good either guys took ships apart put station wagon drove home about 10 miles immediately called eye doctor Though immedi ately reachable office said would try get him have him give call pain terrible after about 15 minutes asked daughter take hospital emergency room Before reached counter emergency room normal routine filling out papers answer ing questions performed nurse very good friend saw asked what happened As soon realized trouble whisked off treat ment room told daugher take care red tape nurse immediate ly flowed something eye believe saline solution immediately stopped terrible pain Meanwhile eye doctor called house found way hospital called gave instructions what time much comfortable still couldnt see out eye put patch over gave some drops put periodically doctor met office Sun day morning upon examination eye told entire surface burned away also said damage done first three sec onds though did everything could time nothing could have prevented damage felt given proper treatment time eye would rejuvenate itself its normal con dition wanted patch kept week dont remember just long did just what told sight started to return four five Continued page 18 handing line. complete line decals available model anywhere 6 NEW KILL MARKING SHEETS 70 insignia sheets also letters numbers 0 majordecals available popular oaaoaoo 40-60 sizes plus Giant Scale American sizes believe majordecals have comprehensive assortment available now sizes styles coming time pressure sensitive water transfer DISTRIBUTORS INQUIRIES INVITED CONTACT YOUR LOCAL HO8BY SHOP OR WRITE DIRECT Well bet line youll love being handed LETTERS ANDPROP DECALS NUMBERSFULL COLOR IN 10 COLORSFFALSTANDARD PRESSURE SENSITIVE andHARTZELL-PRATT & WHITNEY WATER TRANSFER.10 dia thru 1/4 scale props L NORTHEAST SCREEN GRAPHICS 21 FISHER AVE EA5T LONGMEAOOW MA 01025 TEL 413-525-4110 World War isnt Quite Over Yet EINDECKER E-III -SNJ 101 Wing 2te Co flgfln LIANT RIC SCALE Marane SAULNIER N * SnootlEolly Moldod FIbongla. Poalago1500 Sq AroSeauttot reA prodAChon nits Old * OaEattMoIdd Tanparnt Canopythe rogeed cOnstruCtiOfl die-Cut parts Both have * EoRRd FtbeRIaaa Moldod Eoglo CowlIng COmplete Kit $27500a hiStoty Contest eitts Easy baud SapeEb Ilight * Plywood FInawalt Hordwaeo Inctododpius 51000 shryprog & hauntliegPlease add $2 postage/handling * Fond dia tandioR Goon togAny eCOSS * Rollad Plan InoErodlonNT residents dad , ,* Dealer InQuiries Now Invited$4395 Standard Class2-Meter Class $7999 UltimateLittle 5copion $5999 * Sleek T-Tail design * Spoilers Spot Landings * * Cloth Wing Covers $1500 pair F ox Models * Foam Wing Construction * Strong Easy Build Fuselage * Eppler 193 Air Foil days just fuzzy images able remove eye patch good sight poor improving slowly Driving little problem since sort double vision multiplied distance instance white line middle road started separating ahead spread apart looked up road doctor treated about two weeks before released told eye would straighten out completelybut would take some time OK vision still distorted Back Fly-In day after eye accident Since seeing out eye couldnt fly models flown friend Sid thousands people come see models full-scale aircraft ultralights balloon really big affair About month later wanted fly Scale contest couple days before tried fly Kaos did sort foolish thing took model off out anyone else around immediately wished hadnt two airplanes sky wasnt best situa tions Fortunately model light could fly very slow managed land OK wasnt ready fly yet eye continued improve would guess after period about two months just about back t6 nor mal thing still noticeable time splitting apart white line down road took about four months before disappeared com pletely Now eye completely back normal have no further trou bles Im sure would have fortunate immediately gotten touch eye doctor top man think Henrys account accident sufficiently graphic really dont have tell careful pump ing fuel either out model Ive suggested use safety glasses previously As Henry stated wearing usual pair sunglasses could have saved himself lot pain anguish letter Sam Hopkins modeler Folsom LA related unusual story concerning flight Giant Scale plane powered 24 cu Big Banger weighing 22 lb Generally speaking loss radio coniniand during flight RC model brings about abrupt termination flight Once radio fails flight model will have sufficient inherent stabili ty continue fly free-flight mode Such case following account Sam Last Saturday August 11 friend went newly-developed field fly Wed scattered thunderstorms Continued page 20 18 Model Aviation Scorpion 8- Little Scorpion JSPARROWHAWK 1/32 SCALE PLASTIC MODEL KIT US Navy Sparrowhawks operated two dirigibles aircraft carrieKduring 1930s among colorful aircraft aviations Golden Age KIT FEATURES U Decals permit finishing model six different Sprrowhawks U Two types wheels hard flexible tires U Monofilament rigging U Detailed interior Send $1 complete catalog kits accessories Dept MA WILLIAMS BROTHERS INC 181 PAWNEE ST SAN MARCOS 92069 CAMEL 1st LANE 2nd AMA SCALE RHINEBECK 84 Manouevers84 2nd Camel B Roane 3rd Triplane B Mackey Send $100 complete literature price list VK kits WW accessories day no else usually use 2 x 5 battery system some cor rosion problems substituted regular switch harness single fourcell four-amp pack pack didnt fit usual battery compartment under cockpit accessible wing removed have hatch aft wing receiver 2 x 5 unit secured substitute battery got stuffed compartment anchored downjust held hatch Big mistake second flight 25-28 oz fuel remaining hatch blew takeoff plane six eight feet air full throttle no radio banked gently left 900 began slow right climbing turn straight back over heads about 100 feet would fly straight turn right wind straight again awhile developed series long ovals moving wind east-southeast direction packed up dashed out onto highway firmly Lord Jesus Christ busy talking him buddy kept ship sight mile finally lost overcast sky immediate area rural large lake about three miles south several subdivisions plus city Covington east hoped plane would make lakeI didnt want see again called sheriffs department no report next morning young lady called say plane crashed back yard lives immediately next shopping center flanked rental store sonic drive-in evidently flew fairly gentle angle under big power line some pine trees lady wasnt too concerned said little ones usually played yard tiey werent home timeabout 600 pm figure Praise Lord ship relatively intact nose busted up engine firewall out leading edge left wing crushed elec tronics still work John what Im praising Lord about evidently flew circles over city just missed big shopping center Saturday after noon flew eight 10 miles flying field impact Im familiar Servo Guardbut can utilized retard throttle have total power failure may tell story admonition just stuff things together last minute did substitute bat tery would never have thought plane would have kept flying takeoff like Heck flew smoother Im controlling itdefinitely humbling experience Back days rudder-only RC models really no Free Flight models ability some Continued page 117 20Model Aviation VK MODEL AIRCRAFT CODud Roan New Jersey winning Camel 5866 Transit Rd Depew NY 14043Phone 716 684-5555 I-I 413 j 11 1isi 1 Beach Ave na Del Rey GA times control rudder flyaways common Todays models neutral stability superior aerobatic performance generally bite dust seconds after loss radio signal As Sam pointed out devices cur rently market will retard throttle event interference loss transmitter signalbut require power on-board battery pack order function readers have simple solution close engine throttle upon loss power onboard battery pack please drop line Meanwhile please make sure airborne battery packs wont ejected takeoff could result just embaTrassment Have safe month John Preston 12235 Tilden wood Dr Rockville MD 20852 Blue Max/Allen Continued page 29 elevator should glued now Remem ber have come up hatch area Make sure exit fuse lage sides far enough forward interfere rudder post Mount completed wing fuse lage. First open hole dowel will go center rib test-fit dowel glue Line up wing fuselage make sure centered square dowel temporarily place slide ply wing mount place dowel glue front F-2 move wing until glue dry triangle stock can now added front wing mount wing still place slide piece wax paper between wing TE fuselage rear mounting plate glued Use 5-mm epoxy glue ply plate place under wing Hold firmly against bottom wing until glue has set Remove wax paper double check make sure wing straight Now drill down through wing doublers through mounting plate Drill out hole wing /I6 tap hole plate 10-32 bolt Add baisa top block fuselage front wing top rear balsa crossgrain sheeting Tall surfaces Build over plan shown sure use spruce leap ing trailing edges stab Cut tle hole top fuselage sheeting clear x rudder post leave part out adds great deal strength installed fin Glue stab bottom fuse lage making sure properly aligned Glue fin sub-fin place Sand rudder tapered shape suggest cut out lightening holes shown plan tail Blue Max quite long everything rear should kept light possible Finishing touches Final-sand everything cover plane ironon covering materials strongly recom mend MonoKote its strength ease application also make hinges Out same material have never failure Install engine mount nose gear nose gear goes up through mount steering arm just below mount wheel collar either inside top mount hold gear place know someone coil bender strongly recommend use Y6-in wire nose gear heavyduty struts save lot props case bender available %2-in gear will work just fine Install tank run fuel lines through center mount Mount engine 6-32 bolts out mount far enough leave room fuel lines come through Mount rudder elevator servos back under hatch Make sure far enough rearward allow receiver placed just ahead Use cable pushrod go rudder servo nose gear cable housing should firmly glued down over its en tire length prevent flexing throttle servo mounted aileron ser vo tray just ahead F-3 flat floor cable pushrod should used throttle also Battery location fuselage depends needed balancing purposes normally under wing right behind tank aileron servo mounted wing rails installed earlier Use sheet metal screws attaching servo con ventional manner CG should fall somewhere between limits shown plan best way check CG place fingers under spars both sides wing slide fingers out equally both sides limits method shown wing plan Desired control throws starting ailerons Y6 up down elevator own rudder 1A left right throws will give easy-to-fly responsive airplane After some test flights throws can adjusted whatever flier feels comfortable first flight open throttle holding slight back pressure elevator will lift off ground about 30 40 feet Let clImb out can get feel way flies its up Blue Max very versatile airplane Continued page 120 February 1 98511 7 Safety/Preston Continued page 20
Edition: Model Aviation - 1985/02
Page Numbers: 13, 14, 16, 18, 20, 117
John Preston Safety Comes First Big four-stroke engines can hard props especially plastic ones Guard eyes squirt glow fuel can serious damage cure flyaway RC planes REVERSAL November 1984 issue MA column reported inci dents prop blades large-dis placement four-stroke engines shat tered may have due presence drive-pins prop drive washer Such pins intended prevent rotation prop respect prop drive washer event engine backfires prop nut will loosen nor will entire prop thrown off ap pears use drive-pins prevent such occurrence may cause prop blades thrown off during engine backfire opinion presents far greater risk injury During last month received let ter Clair Sieverling modeler Phoenix AZ injured 14 x 8 wood prop 120 four-stroke broke adjusting fuel mix ture engine equipped four safety bolts pass through holes drilled prop hub enter tapped holes prop drive washer Clairs ac count incident follows friend holding plane started engine let warm up somewhat low speed opened up running very well since still somewhat new fly little rich carefully reached around richened slightly directly line prop did know better anyway right As needle adjust ment took engine started run lit tle rougher would desired noise think backfire prop spinner shattered about tWo feet face hit neck something observers said looked like hit uppercut knocked rear got back up shut throttle stick down felt neck bleeding taken emergency room nearby hospital dug some pieces out found ligament exposed cut sewed up also relieved wallet price good sport radio spent very uncomfortable weekend say least spinner broken several pieces much like broken Coke bottle prop broken two through hub also directly through safety-bolt holes safety bolts sheared off flush engine thrust washer isnt certain whether hit parts spinner prop obvious fortunate wasnt much worseand perhaps fatal think should some serious re consideration using safety bolts through hub larger fourstroke engines prone back fire four-stroke 90 backfired air also shattered prop spinner same manner also safety-bolted have seen props spinners come off running engine desirable generally hit ground front plane seem have energy single pieces flying around have think safety bolts four-stroke backfires good chance will loosen prop nut prop will simply windmill does come off wont dangerous obvious prop will less likely break free give little time backfire Just few days ago received letter Peter Miller British modeler written after read November safety Continued page 14 II 7___ NOW ASK YA EVER FATIGUE LIKE. ThAT SEEN PROP 3EFQRE February 198513 SAFETY ALERT To Owners large tour-stroke engines Subject Propeller drive pins Several brands models four-stroke model airplane en gines displacements 081 Cu up equipped propeller drive pins prop drive washer happen own such engine strongly recommended use drive pins Astounding realism auainaie plastics.. Very light weight discriminating hobblest. Either Pilot version kit.. Sportsman Barnstormer.. Darn Good Airmen .. complete NEW LOW PRICES 01/6 Scale $595 1/4 Scale $795 1/3 Scale 142 S Dealer add Dollar direct order handling VIDEO PROGRAMS NEWAIRPLANEFUNNIESII wildest Creiiest wackiest insane video ever 30 minutes aeromodellng insanity Gremlins working overtime RENTBUY 14954495 13954495 13954495 12953995 14953995 OTHER GREAT VIDEOS 1 BASIC CONSTRUCTION FOR 8EGINNERS IN RIC90 Mm 2 BASIC FLIGHT TRAINING FOR BEGINNERS IN AIC50 Mm Professional step step Instruction Z 3 THE WORLD OF MODEL AVIATION90 Mm Expos static displays AMA NATS scale 4 OSHKOSH OVERVIEW55 Mm Workshops Air Shows Warbirds 5 AIRPLANE FUNNIES II30 Mm ORDERING INFORMATION Programs may rented wloption purchase Duration rentals 3 days Program No lieS days Send Check Money Order full purchsse price tape ordered renting balance will relunded upon return 01 programs ordering specify date desired Club meetings order well advance Allow 10 days checks clear Illinois Residents include 8 per cent tax Shipping charge $300 purchase $450 rental Return postage included VHS ONLY SEND ORDERS TO ACADEMY OF AVIATION RESEARCH AND DEVELOPMENT POBOX 428139 CHICAGO ILLINOIS 312 8740456 column article Concerning drive pins props four-stroke engines Niel Tidey designer very power ful Laser 61 four-cycle tells modelers using ordinary nylon props because lower rpm four-cycles dangerous Due powerful long power stroke hub accelerated prop tips tend lag behind engine comes up compression hub braked and prop tips carry due flywheel effect prop therefore flexing chordwise direction due shape probably twisting sets up fatigue very quickly prop fails chap three brand name 12 x 6 props fail after other Glass-filled nylon ones seem OK wood ones OK cant help wondering failures pinned props may caused hub cannot move flexing concentrated unpinned hubs allow slight movement prop hub theory first part letter fact doubt Petes theory fatigue ing reason nylon prop failure also applies pinned wooden props fourstrokes since wood best knowledge subject fatigue failure However believe sug gestion inability pinned prop move relative drive washer leading cause reported failures Perhaps need special design prop use four-stroke engine going attached multiple bolts pins through hub prop larger diameter hub correspondingly larger-diameter drive washer may whats called Considering quantity fuel must burned year model airplane boat car enthusiasts hear very few incidents fuel asso ciated injury Im sure know death could result drink Thats Federal Government re quires sold container child-proof cap However wonder aware consequenc es getting fuel eye Al Johnson member Cloud Kings RC club recently wrote told about fuel-in-the-eye incident experienced Henry Haffke should need no intro duction since well-known Gee Bee models articles about appear frequently modeling press recently wrote Henry asked him drop line describ ing incident think will agree based following extracts Henrys response fuel eye avoided costs club conducting big Giant Continued page 16 LEADER IN SMALL AIRFOIL TECHNOLOGY MAStER AIRSCREW new K Series family propellers has introduced three sizes 14 x 614 x 8 16 x 6 large propellers have wider blades thinner airfoil sections best performance fourstroke engines will also work very well two-strokes Mold ed same tough glass-filled nylon GIF 1/2A Series props have same incredible strength durability Planned future releases series 12 x 6 16 x 8 Priced $395 $495 WINDSOR PROPELLER CO 384 Tesconi Ct Santa Rosa Cailt 95401 U.d MAA int,t FiyI7050dfl NYS Ridn dd 7% 5NYia * * * * * * * * * * * * * * K 16Model Aviation 3-4 Channel RIC Systems$3995 Balsa Construction add $2 postage/handling 55 Wingspan 35 45 Engines Scale Fly-In Miliville airport Sunday took three /4-scale Gee Bees R-1 Model Y Model D out field Saturday check Out make sure flying right Sunday show flown R-l Model D getting Y ready fly flew once made some ad justments process refuel ling second flight using powerful hand-cranked rotary pump some unknown reason wearing sunglasses never fly head over pump feed line came off got good squirt fuel directly right eye splash direct stream right eye pain horrendous thought bottle water keep car case overheating trouble guys club poured entire two-liter bottle eye didnt seem help much eye swelled closed completely just couple minutes Another club member lives near field went home brought back some Visine put eye didnt seem good either guys took ships apart put station wagon drove home about 10 miles immediately called eye doctor Though immedi ately reachable office said would try get him have him give call pain terrible after about 15 minutes asked daughter take hospital emergency room Before reached counter emergency room normal routine filling out papers answer ing questions performed nurse very good friend saw asked what happened As soon realized trouble whisked off treat ment room told daugher take care red tape nurse immediate ly flowed something eye believe saline solution immediately stopped terrible pain Meanwhile eye doctor called house found way hospital called gave instructions what time much comfortable still couldnt see out eye put patch over gave some drops put periodically doctor met office Sun day morning upon examination eye told entire surface burned away also said damage done first three sec onds though did everything could time nothing could have prevented damage felt given proper treatment time eye would rejuvenate itself its normal con dition wanted patch kept week dont remember just long did just what told sight started to return four five Continued page 18 handing line. complete line decals available model anywhere 6 NEW KILL MARKING SHEETS 70 insignia sheets also letters numbers 0 majordecals available popular oaaoaoo 40-60 sizes plus Giant Scale American sizes believe majordecals have comprehensive assortment available now sizes styles coming time pressure sensitive water transfer DISTRIBUTORS INQUIRIES INVITED CONTACT YOUR LOCAL HO8BY SHOP OR WRITE DIRECT Well bet line youll love being handed LETTERS ANDPROP DECALS NUMBERSFULL COLOR IN 10 COLORSFFALSTANDARD PRESSURE SENSITIVE andHARTZELL-PRATT & WHITNEY WATER TRANSFER.10 dia thru 1/4 scale props L NORTHEAST SCREEN GRAPHICS 21 FISHER AVE EA5T LONGMEAOOW MA 01025 TEL 413-525-4110 World War isnt Quite Over Yet EINDECKER E-III -SNJ 101 Wing 2te Co flgfln LIANT RIC SCALE Marane SAULNIER N * SnootlEolly Moldod FIbongla. Poalago1500 Sq AroSeauttot reA prodAChon nits Old * OaEattMoIdd Tanparnt Canopythe rogeed cOnstruCtiOfl die-Cut parts Both have * EoRRd FtbeRIaaa Moldod Eoglo CowlIng COmplete Kit $27500a hiStoty Contest eitts Easy baud SapeEb Ilight * Plywood FInawalt Hordwaeo Inctododpius 51000 shryprog & hauntliegPlease add $2 postage/handling * Fond dia tandioR Goon togAny eCOSS * Rollad Plan InoErodlonNT residents dad , ,* Dealer InQuiries Now Invited$4395 Standard Class2-Meter Class $7999 UltimateLittle 5copion $5999 * Sleek T-Tail design * Spoilers Spot Landings * * Cloth Wing Covers $1500 pair F ox Models * Foam Wing Construction * Strong Easy Build Fuselage * Eppler 193 Air Foil days just fuzzy images able remove eye patch good sight poor improving slowly Driving little problem since sort double vision multiplied distance instance white line middle road started separating ahead spread apart looked up road doctor treated about two weeks before released told eye would straighten out completelybut would take some time OK vision still distorted Back Fly-In day after eye accident Since seeing out eye couldnt fly models flown friend Sid thousands people come see models full-scale aircraft ultralights balloon really big affair About month later wanted fly Scale contest couple days before tried fly Kaos did sort foolish thing took model off out anyone else around immediately wished hadnt two airplanes sky wasnt best situa tions Fortunately model light could fly very slow managed land OK wasnt ready fly yet eye continued improve would guess after period about two months just about back t6 nor mal thing still noticeable time splitting apart white line down road took about four months before disappeared com pletely Now eye completely back normal have no further trou bles Im sure would have fortunate immediately gotten touch eye doctor top man think Henrys account accident sufficiently graphic really dont have tell careful pump ing fuel either out model Ive suggested use safety glasses previously As Henry stated wearing usual pair sunglasses could have saved himself lot pain anguish letter Sam Hopkins modeler Folsom LA related unusual story concerning flight Giant Scale plane powered 24 cu Big Banger weighing 22 lb Generally speaking loss radio coniniand during flight RC model brings about abrupt termination flight Once radio fails flight model will have sufficient inherent stabili ty continue fly free-flight mode Such case following account Sam Last Saturday August 11 friend went newly-developed field fly Wed scattered thunderstorms Continued page 20 18 Model Aviation Scorpion 8- Little Scorpion JSPARROWHAWK 1/32 SCALE PLASTIC MODEL KIT US Navy Sparrowhawks operated two dirigibles aircraft carrieKduring 1930s among colorful aircraft aviations Golden Age KIT FEATURES U Decals permit finishing model six different Sprrowhawks U Two types wheels hard flexible tires U Monofilament rigging U Detailed interior Send $1 complete catalog kits accessories Dept MA WILLIAMS BROTHERS INC 181 PAWNEE ST SAN MARCOS 92069 CAMEL 1st LANE 2nd AMA SCALE RHINEBECK 84 Manouevers84 2nd Camel B Roane 3rd Triplane B Mackey Send $100 complete literature price list VK kits WW accessories day no else usually use 2 x 5 battery system some cor rosion problems substituted regular switch harness single fourcell four-amp pack pack didnt fit usual battery compartment under cockpit accessible wing removed have hatch aft wing receiver 2 x 5 unit secured substitute battery got stuffed compartment anchored downjust held hatch Big mistake second flight 25-28 oz fuel remaining hatch blew takeoff plane six eight feet air full throttle no radio banked gently left 900 began slow right climbing turn straight back over heads about 100 feet would fly straight turn right wind straight again awhile developed series long ovals moving wind east-southeast direction packed up dashed out onto highway firmly Lord Jesus Christ busy talking him buddy kept ship sight mile finally lost overcast sky immediate area rural large lake about three miles south several subdivisions plus city Covington east hoped plane would make lakeI didnt want see again called sheriffs department no report next morning young lady called say plane crashed back yard lives immediately next shopping center flanked rental store sonic drive-in evidently flew fairly gentle angle under big power line some pine trees lady wasnt too concerned said little ones usually played yard tiey werent home timeabout 600 pm figure Praise Lord ship relatively intact nose busted up engine firewall out leading edge left wing crushed elec tronics still work John what Im praising Lord about evidently flew circles over city just missed big shopping center Saturday after noon flew eight 10 miles flying field impact Im familiar Servo Guardbut can utilized retard throttle have total power failure may tell story admonition just stuff things together last minute did substitute bat tery would never have thought plane would have kept flying takeoff like Heck flew smoother Im controlling itdefinitely humbling experience Back days rudder-only RC models really no Free Flight models ability some Continued page 117 20Model Aviation VK MODEL AIRCRAFT CODud Roan New Jersey winning Camel 5866 Transit Rd Depew NY 14043Phone 716 684-5555 I-I 413 j 11 1isi 1 Beach Ave na Del Rey GA times control rudder flyaways common Todays models neutral stability superior aerobatic performance generally bite dust seconds after loss radio signal As Sam pointed out devices cur rently market will retard throttle event interference loss transmitter signalbut require power on-board battery pack order function readers have simple solution close engine throttle upon loss power onboard battery pack please drop line Meanwhile please make sure airborne battery packs wont ejected takeoff could result just embaTrassment Have safe month John Preston 12235 Tilden wood Dr Rockville MD 20852 Blue Max/Allen Continued page 29 elevator should glued now Remem ber have come up hatch area Make sure exit fuse lage sides far enough forward interfere rudder post Mount completed wing fuse lage. First open hole dowel will go center rib test-fit dowel glue Line up wing fuselage make sure centered square dowel temporarily place slide ply wing mount place dowel glue front F-2 move wing until glue dry triangle stock can now added front wing mount wing still place slide piece wax paper between wing TE fuselage rear mounting plate glued Use 5-mm epoxy glue ply plate place under wing Hold firmly against bottom wing until glue has set Remove wax paper double check make sure wing straight Now drill down through wing doublers through mounting plate Drill out hole wing /I6 tap hole plate 10-32 bolt Add baisa top block fuselage front wing top rear balsa crossgrain sheeting Tall surfaces Build over plan shown sure use spruce leap ing trailing edges stab Cut tle hole top fuselage sheeting clear x rudder post leave part out adds great deal strength installed fin Glue stab bottom fuse lage making sure properly aligned Glue fin sub-fin place Sand rudder tapered shape suggest cut out lightening holes shown plan tail Blue Max quite long everything rear should kept light possible Finishing touches Final-sand everything cover plane ironon covering materials strongly recom mend MonoKote its strength ease application also make hinges Out same material have never failure Install engine mount nose gear nose gear goes up through mount steering arm just below mount wheel collar either inside top mount hold gear place know someone coil bender strongly recommend use Y6-in wire nose gear heavyduty struts save lot props case bender available %2-in gear will work just fine Install tank run fuel lines through center mount Mount engine 6-32 bolts out mount far enough leave room fuel lines come through Mount rudder elevator servos back under hatch Make sure far enough rearward allow receiver placed just ahead Use cable pushrod go rudder servo nose gear cable housing should firmly glued down over its en tire length prevent flexing throttle servo mounted aileron ser vo tray just ahead F-3 flat floor cable pushrod should used throttle also Battery location fuselage depends needed balancing purposes normally under wing right behind tank aileron servo mounted wing rails installed earlier Use sheet metal screws attaching servo con ventional manner CG should fall somewhere between limits shown plan best way check CG place fingers under spars both sides wing slide fingers out equally both sides limits method shown wing plan Desired control throws starting ailerons Y6 up down elevator own rudder 1A left right throws will give easy-to-fly responsive airplane After some test flights throws can adjusted whatever flier feels comfortable first flight open throttle holding slight back pressure elevator will lift off ground about 30 40 feet Let clImb out can get feel way flies its up Blue Max very versatile airplane Continued page 120 February 1 98511 7 Safety/Preston Continued page 20