Sport Aerobatics Ron Van Putte ANSWERING mail first order business September 1985 column contained section about Pattern sandbaggers guys dont move up next class after accumulating 100 points class received teresting letter Del Rykert Batavia NY said part have seen what suspect sandbagging during five years Pattern competitor started what called Novice now called Sportsman R VP best placed third contest trophy saw before earning 100 points moving up Advanced real ize sandbagging has helped contrib ute frustration winning lets examine another side problem see doing fun feel everyone should least place cou ple firsts seconds before moving up next class What happened went Nats came twelfth out 50-some contestants earned lot points pushed up can see person can easily pushed up Expert goes Nats regularly never see glory might contribute problem Pattern attendance some contests Im doing well make two three contests year go Nats earn lot points makes wonder should really attend Maybe fair what need compromise between old new sconng systems Everyone likes see little glory now especially after lots practice hard work come low winners circle very frustrating scoring changes took place energy crunch took hold wonder did help hurt attend ance much gas shortage did Maybe About CDs turning placement sheets AMA keeping track points feel may solution problem effort streamline make very cost-effective maybe people come first second third should turned sandbaggers would hanging out never thought Dels viewpoint Get ting trophy nice seems experience typical dont earn twelfth place out 50 fliers Sportsman being very good flier Im really surprised hasnt placed better local contests hes attended must have very good group fliers com pete against up Batavia NY Actually CD reports AMA top five placings event local contest also records total number contestants class Del certainly right about top places containing sandbaggers real ly wouldnt tough compute ad vancement points top five finishers load computer adding previously-entered points Can imagine surprise sandbagger would feel upon receiving letter con gratulations AMA informing him promotion next class beginning next year addition sandbagger entered event no longer entitled compete during suc ceeding year computer would catch could notified transgres sion can think few fliers should get letters already about some feedback Tell AMA RC Aerobatics Contest Board member district Look name Competition Directory section Competition Newsletter Its printed issue Model Aviation After telling well Sears Filled Epoxy Cement works expected Id get let ters fliers corners coun try saying wasnt available live Well happened Ive gotten bunch letters intended let everyone know Sears store gets went down store find out Guess what dont carry either Apparently recently dropped store 50 Model Aviation thought might like look back Pattern 19 years agoat 1967 Nats photos month meet held California sharpiooking Class 3 ship John B Sabines L original-design Crocagator hes Mobile AL Don Coleman helper Don lived Citronelle AL Official US Navy photo Planes look familiar Theyre Lew Androws Sportmaster kitsalso Class 3 entries Fliers Ernie 1-luber 1Beverly MA Dennis 0 Sawyer RSomerville MA Cylin dor head Ernies plane looks odd because fore-and-aft twin plug featureproba bly Merco 49 Note neither engine has muffier Official US Navy photo catalog suggested try contact ing main buyers Chicago deter made Sears havent successful yet Does anyone out know next letter received Harold deBolt appreciate impact letter requires bit background started flying RC summer 1954 yes am fully aware 31 years ago Id appreciate didnt remind Thank first airplane deBolt Kitten produced deBolt Model Engineering Company Harold deBolt owner Hal pioneers RC produced early kits Trainer Champion Viscount Kitten few manufactured first retractable gear mechanisms RC airplanes first Pat tern fliers first watched him com pete Pattern contest Dayton OH 1964 competed Pattern contests years before moving Pylon Rac ing inducted AMA Hall Fame 1976 What would reaction wrote man heroes very impressed As can imagine read letter very carefully January MA writing caused wonder enough quick note have out Pattern years still maintain keen interest read observations diligently Very informative Pilot Walter L Schroder Jr prepares guide hisCiassi entryassoonasLoyd E Sager Riverside CA gets engine started Wait resided Bedford NY Class i Pattern planes could have rudder engine controlhence thatdihedral Carefullyeyeballingtheen gines thrust line indicates its got lots up-thrust Yes arrangement used throttle give effect elevator control Hows bending rules Class 2 planes could use rud der elevator engine control Ciass3shipswere full-house rud der elevator aileron engine control class distinctive design features cope controls allowedas wit ness typical Class 1 plane Walter flying Official US Navy photograph First little historyI think back Seventies maybe Sixties some us thought time come turn around-style pattern Two objectives basicallyfirst reduce flight time increasing number judged maneuvers Turnaround TA maneuvers necessity judge Some regular maneuvers could used TA Wingover Immelrnann Split 5 etc lot work done flight plan get right presented detail magazinemaybe Model Airplane News initial reaction extensive negative just saw present FAI rules no box need fly tighter obvious time average Pattern flier just ready such change though need great So has taken time get something similar good see some acceptance now current comments excellent read PAl rule cer tainly definite about flying box hard see World Champs can judged following rules letter no loop holes case justify what appar ently done suppose contestants find hard fly rules call has always name game what asked best can Continued page 136 TOLEDO THIRTY-SECOND ANNUAL RADIO CONTROL EXPOSITION TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO APRIL 11 12 & 13 1986 presented Weak Signals RIO Club Toledo Ohio Exposition information available contacting Wayne Yeager co-director ticket address shown below ADVANCE TICKETS may ordered sending self-addressed-stamped busi ness size 4 x 9 envelope Tickets 38235 Castle Romulus Michigan 48174 phone 313 941-6661 Canadian orders must contain International Postal Cou pon instead stamps Include check money order US funds made payable Weak Signals R/C Club along 25 cents per order handling charge must state expo days tickets used prices $400 per day adults $100 per day children 12 under Ticket sales final non-refundable tickets along program will returned near mid-March COMPETITION CLASSES NON-MILITARY SPORT SCALE PLANE AMA Rules MILITARY SPORT SCALE PLANE AMA Rules PRECISION SCALE PLANE AMA Rules PATTERN PLANE SPORT MONO-PLANE non-scale models SPORT 81-PLANE non-scale models OLD TIMER FREE FLIGHT R/C ASSIST R/C SAILPLANE non-scale models HELICOPTER R/C CAR COMPETITION BOAT MILITARY SCALE BOAT PLEASURE POWER BOAT WORKING VESSEL-UNARMED March 1986 51 PRECISION SAND AND SHAPE With. 4 Custom Aluminum MINI Extrusion Sanding Block TEE8AREspecially designed -for small sanding jobs Sander Pack contains 3 sheets assorted die-cut sandpaper Regular lengtl~ le length 10718for21 7/8 handy use TEE PB bigger jobs truer surfaces Regular Double Self Adhesive Sheet Sandpaper Customize sanding like pros 369 xli abeets per pack 12 medaa 12 fne 12 saperfne per sheet Post add 20% Catalog 25 APPLIED DESIGN CORP El Segundo CA 90245 [DCO SKY D[VI[ 65 Ignition Approved 90 Da' Warraiitv Twin Ball Bearing Crank Americas finest old-timer e4gine Originally designed Hassad & Havlik replica engine resonic tuning ensures continuous flow power through speed range Look out green one$ goodbye red headT&Ds replica Sky Devil 65 $279 less coil cond & plug Caht icsidents add 6% sales tax ORDR DIRCT T&D RESEARCH Assocmms 6371 El Cajon Blvd Suite 115 San Dicgo CA 92115 $1 FOR BROCHURE junction aileron stop adverse yaw 3 full-size plane washout built its wing tips use model also 4 full-size Frise-type ailerons hinges near lower sur face use model 5 Use cou pled aileron rudder some transmit ters offer option 6 Build lighterweight models 7 Learn gentle transmitter control stick enter ing recovering turns particular ly steeply banked 8 Learn rotate gently climb after takeoff Sudden application load wing near stall slow speed can cause snap-roll Sud den application aileron point can likewise 9 Use aileron differential travel up down Frise-type ailerons seldom used models extra time effort needed build wing regarded waste have negative com ments about value effectiveness must agree seem have limits small models As models become larger however has definite trend Scale Frise ailerons work just well models full-size aircraft hinge point located near below ailerons lower surface pivot point some distance back ailerons leading edge aileron moves upward overhung leading edge dips below wing surface induce drag purpose balancing drag lowered aileron opposite wing thereby controlling adverse yaw Air forced up througli hinge slot flow over up-raised aileron increased ef fectiveness Air also flows through hinge slot lowered aileron help prevent stalling aileron aileron cross section actually airfoil shape similar smaller wing Full-size aircraft use other hinge arrangements will em ploy differing methods reducing control problems such washout wing tips changing airfoils between root tips differential ailerons Some aircraft carry differential extremes DH Tiger Moth example up-trav el almost zero down direction scratch-builders -designers Scale models insist upon reproducing razor-thin wing tips prototype vulnerable tip-stall control problems Some kits have seen thickened airfoil wing tips may 100% Scale fly well forgiving control sins producers reputation established having flyable prodlucts Bob Dolly Wischer S-221 Lapham Peak Rd Delafield WI 53018 RC Aerobatics/Van Putte Continued page 51 something has tough along way have find ways improve designs ourselves circumvent rules 85 case hindsight answer can wonder protestor whatever neededwas used obtain proper judging Certainly point should made now fu ture competitions will judged properly Otherwise TA pattern has trigued apparent need new specialized aircraft have watched progress does seem some advancements have made could help define design needs clearly looks like will take time developmentno simple answer com plex requirement has think judging will tighten up meet rules Also people attempt meet needs rules will better off long run depend circumventing current-style models have some ideas would like try time will ever permit could entirely different type craft could better TA pattern Think Vegas findings example hope enjoyed Hals letter much did Theres lot good thoughts Turnaround Pat tern fliers would well ponder Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Electrics/Kopski Continued page 53 dise size price levels availa blefrom several suppliersto help experience Electric Elation first time continuing Electric success thIng find curious previous tabulation under stand price-appeal smaller motors larger ones much have hard time understanding 25s 40s dont find acceptance Per sonally fly sizes find larger planes appealing ground-handling ability appreciate extra demands place charging ways deal charging larger packs MA May June 1985 may want consider aspects plan new Electric project ElectrIc Aeromodeling Association have some turbulent times past two organizations dedicated Electric cause first SEAM Society Electric Aircraft Model ers disappeared sometime during past year far know dead issue unfortunate because SEAM original AMA-recognized spe cialty organization Electric interests have own suspicions what hap pened doesnt matter surviving organization 136 Model Aviation EAA eyes looked pretty shaky annual dues check returned nobody box number now appears have organized foothold As far Im con cerned two organizations such very small interest group downright silly though stated purposes sounded different Thus Im feeling better now personally wish EAA well Electric needs unified representative voice what promises explosive growth next decade regard II encourage write EAA PO B6Z~ Midway City CA 92655 re quest membership information Annual dues 10 bucks less gallon glow goo get quarterly news letter Silent Fly Sheet dedicated Electric interest EAA president Bob Sliff well-known Electric modeler Watts Up columnist Model Air plane News Bob runs Hobby Horn California manufactures kits some Electric suppliers Basic Electricity now should have pretty good idea handy gadgetthe multimeterworks use properly basic level re cent installments mini-series weve seen ideas behind voltmeter cur rent meter ammeter resistance meter ohmmeter functions standard analog multimeter kind mov ing pointer Before move along digital multimeter few sidelights about analog type may interest Generally some accessory utility aspects multimeters can include such things extra test-lead jacks perhaps special switch es example Radio Shack instru ment pictured has total four test-lead jacks sockets far weve detailed use twothe normal ones example shown four jacks thats always usedthe 6ne marked -COM negative com mon Connect black test lead jack right marked ositive Volts-OhmsAmps red test lead goes connections used just about purposes Almost function switch positions operate test leads connectors remaining jacks marked 000V pretty much selfexplanatory black lead -COM red lead connec tor function switch set 250 & 1000 DCV sector youre set check out new 833-cell battery remaining jack often useful Electric modelersthe A positive DC 10-amp connector black lead -COM jack red lead function switch set bA DC sec tor youre set measure smaller motor currents perhaps charging current motor battery Remem ber connect ammeters SERIES circuit under test two special jacks common multimeters separate two normal jacks because func tion switch selects multipliers shunts other ranges cannot safely handle either very high voltage very high current applied strument via connectors switch does select proper function scale meter reading unusual put levels part routed past switch contacts separate circuitry Most meter movements have median ical zero adjustment screw meter surface directly over pointer bearings screw moves pointer resting posi tion up down pointer can brought true zero no deflection no input present may notice pointer mechanical zero drifts different positions instrument Thus meter lying down may have same zero standing up good meter really wellbalanced movement will maintain zero position instrument stand ing side lying flat other position None meters perfectly Generally set mechanical zero meter lying flat ome cases standing straight up Some instruments shown have polarity switch two-position switch does same thing reversing test lead connec tions Thus erringly connect test leads backward such pointer would deflect downward instead up scale flick switch would correct situation Personally prefer get test leads right means dis connecting reconnecting properly Some instruments like shown have switch OFF position useful transporting multimeter OFF delicate meter movement heavily dampedthe tendency pointer swing transit well reduced Remember haul meter field Next month move digital ters well also look instrument accuracy sensitivity both types mean time use enjoy expanded acquain tance multimeters sure go through manual particular product since series cannot possibly cover particulars instruments Please direct comment question SASE please author Bob Kopski 25 West End Dr Lansdale PA 19446 Happy hushed flight LZY WU2 i2V O UOU BThLD SEE OUR BACK COVER AD FOR PHOTOS EXPERT Expert R/C systems pictured new 7 ch 4 ch bath equipped dual cunver sian FM receivers Dual con version permits narrower hand less trouble adla cent channels Bath systems equipped servo re versing Bath 4 ch 7 ch nicd dual charger Mixing 7 ch anly includes aileran-rudder mixing rudderaileron mixing elevator-flap mixing flap-dawn em vatar mixing amaunt direction mixing ad lustahle 7 ch elevator aileron have dual rates engineers madel huilders have heen testing systems bath lab air fixed wing helicopter far 6 manths results have great Ser vos S-25s equipped Mitsubishi chip tar less dead band less jitter Wodd Engines has build ing servicing R/C systems tar hobby products indus trial applications since 1957 Some oar service men have over 20 years us So great R/C system smart transmitter case styling plus wide assort ment whistles bells low price backed up service department quick turn around reason able prices MALONEY 100 OK what about engine castings ia photo Jan ad published line drawing coming Ma loney 100 cubic inch magneta ignition angina show readers waking progress show ing few castings means molds finished Actually engine being tested writing 12/21/85 should have engines stock February 85 Some Maloney 100 advan tages burns inexpensive gas oline Has magneto plus electronic ignition Small size means its startable common size starters Exhaust comes oat direction elect Small engine small models fits new kits developed tar 90/120 size four strokes P QQO~ii 8960 ROSSASH AVE CINCINNATI OHIO 45236 PHONE 513 793-5900 TELEX 214557 March 1986 137
Edition: Model Aviation - 1986/03
Page Numbers: 50, 51, 136, 137
Sport Aerobatics Ron Van Putte ANSWERING mail first order business September 1985 column contained section about Pattern sandbaggers guys dont move up next class after accumulating 100 points class received teresting letter Del Rykert Batavia NY said part have seen what suspect sandbagging during five years Pattern competitor started what called Novice now called Sportsman R VP best placed third contest trophy saw before earning 100 points moving up Advanced real ize sandbagging has helped contrib ute frustration winning lets examine another side problem see doing fun feel everyone should least place cou ple firsts seconds before moving up next class What happened went Nats came twelfth out 50-some contestants earned lot points pushed up can see person can easily pushed up Expert goes Nats regularly never see glory might contribute problem Pattern attendance some contests Im doing well make two three contests year go Nats earn lot points makes wonder should really attend Maybe fair what need compromise between old new sconng systems Everyone likes see little glory now especially after lots practice hard work come low winners circle very frustrating scoring changes took place energy crunch took hold wonder did help hurt attend ance much gas shortage did Maybe About CDs turning placement sheets AMA keeping track points feel may solution problem effort streamline make very cost-effective maybe people come first second third should turned sandbaggers would hanging out never thought Dels viewpoint Get ting trophy nice seems experience typical dont earn twelfth place out 50 fliers Sportsman being very good flier Im really surprised hasnt placed better local contests hes attended must have very good group fliers com pete against up Batavia NY Actually CD reports AMA top five placings event local contest also records total number contestants class Del certainly right about top places containing sandbaggers real ly wouldnt tough compute ad vancement points top five finishers load computer adding previously-entered points Can imagine surprise sandbagger would feel upon receiving letter con gratulations AMA informing him promotion next class beginning next year addition sandbagger entered event no longer entitled compete during suc ceeding year computer would catch could notified transgres sion can think few fliers should get letters already about some feedback Tell AMA RC Aerobatics Contest Board member district Look name Competition Directory section Competition Newsletter Its printed issue Model Aviation After telling well Sears Filled Epoxy Cement works expected Id get let ters fliers corners coun try saying wasnt available live Well happened Ive gotten bunch letters intended let everyone know Sears store gets went down store find out Guess what dont carry either Apparently recently dropped store 50 Model Aviation thought might like look back Pattern 19 years agoat 1967 Nats photos month meet held California sharpiooking Class 3 ship John B Sabines L original-design Crocagator hes Mobile AL Don Coleman helper Don lived Citronelle AL Official US Navy photo Planes look familiar Theyre Lew Androws Sportmaster kitsalso Class 3 entries Fliers Ernie 1-luber 1Beverly MA Dennis 0 Sawyer RSomerville MA Cylin dor head Ernies plane looks odd because fore-and-aft twin plug featureproba bly Merco 49 Note neither engine has muffier Official US Navy photo catalog suggested try contact ing main buyers Chicago deter made Sears havent successful yet Does anyone out know next letter received Harold deBolt appreciate impact letter requires bit background started flying RC summer 1954 yes am fully aware 31 years ago Id appreciate didnt remind Thank first airplane deBolt Kitten produced deBolt Model Engineering Company Harold deBolt owner Hal pioneers RC produced early kits Trainer Champion Viscount Kitten few manufactured first retractable gear mechanisms RC airplanes first Pat tern fliers first watched him com pete Pattern contest Dayton OH 1964 competed Pattern contests years before moving Pylon Rac ing inducted AMA Hall Fame 1976 What would reaction wrote man heroes very impressed As can imagine read letter very carefully January MA writing caused wonder enough quick note have out Pattern years still maintain keen interest read observations diligently Very informative Pilot Walter L Schroder Jr prepares guide hisCiassi entryassoonasLoyd E Sager Riverside CA gets engine started Wait resided Bedford NY Class i Pattern planes could have rudder engine controlhence thatdihedral Carefullyeyeballingtheen gines thrust line indicates its got lots up-thrust Yes arrangement used throttle give effect elevator control Hows bending rules Class 2 planes could use rud der elevator engine control Ciass3shipswere full-house rud der elevator aileron engine control class distinctive design features cope controls allowedas wit ness typical Class 1 plane Walter flying Official US Navy photograph First little historyI think back Seventies maybe Sixties some us thought time come turn around-style pattern Two objectives basicallyfirst reduce flight time increasing number judged maneuvers Turnaround TA maneuvers necessity judge Some regular maneuvers could used TA Wingover Immelrnann Split 5 etc lot work done flight plan get right presented detail magazinemaybe Model Airplane News initial reaction extensive negative just saw present FAI rules no box need fly tighter obvious time average Pattern flier just ready such change though need great So has taken time get something similar good see some acceptance now current comments excellent read PAl rule cer tainly definite about flying box hard see World Champs can judged following rules letter no loop holes case justify what appar ently done suppose contestants find hard fly rules call has always name game what asked best can Continued page 136 TOLEDO THIRTY-SECOND ANNUAL RADIO CONTROL EXPOSITION TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO APRIL 11 12 & 13 1986 presented Weak Signals RIO Club Toledo Ohio Exposition information available contacting Wayne Yeager co-director ticket address shown below ADVANCE TICKETS may ordered sending self-addressed-stamped busi ness size 4 x 9 envelope Tickets 38235 Castle Romulus Michigan 48174 phone 313 941-6661 Canadian orders must contain International Postal Cou pon instead stamps Include check money order US funds made payable Weak Signals R/C Club along 25 cents per order handling charge must state expo days tickets used prices $400 per day adults $100 per day children 12 under Ticket sales final non-refundable tickets along program will returned near mid-March COMPETITION CLASSES NON-MILITARY SPORT SCALE PLANE AMA Rules MILITARY SPORT SCALE PLANE AMA Rules PRECISION SCALE PLANE AMA Rules PATTERN PLANE SPORT MONO-PLANE non-scale models SPORT 81-PLANE non-scale models OLD TIMER FREE FLIGHT R/C ASSIST R/C SAILPLANE non-scale models HELICOPTER R/C CAR COMPETITION BOAT MILITARY SCALE BOAT PLEASURE POWER BOAT WORKING VESSEL-UNARMED March 1986 51 PRECISION SAND AND SHAPE With. 4 Custom Aluminum MINI Extrusion Sanding Block TEE8AREspecially designed -for small sanding jobs Sander Pack contains 3 sheets assorted die-cut sandpaper Regular lengtl~ le length 10718for21 7/8 handy use TEE PB bigger jobs truer surfaces Regular Double Self Adhesive Sheet Sandpaper Customize sanding like pros 369 xli abeets per pack 12 medaa 12 fne 12 saperfne per sheet Post add 20% Catalog 25 APPLIED DESIGN CORP El Segundo CA 90245 [DCO SKY D[VI[ 65 Ignition Approved 90 Da' Warraiitv Twin Ball Bearing Crank Americas finest old-timer e4gine Originally designed Hassad & Havlik replica engine resonic tuning ensures continuous flow power through speed range Look out green one$ goodbye red headT&Ds replica Sky Devil 65 $279 less coil cond & plug Caht icsidents add 6% sales tax ORDR DIRCT T&D RESEARCH Assocmms 6371 El Cajon Blvd Suite 115 San Dicgo CA 92115 $1 FOR BROCHURE junction aileron stop adverse yaw 3 full-size plane washout built its wing tips use model also 4 full-size Frise-type ailerons hinges near lower sur face use model 5 Use cou pled aileron rudder some transmit ters offer option 6 Build lighterweight models 7 Learn gentle transmitter control stick enter ing recovering turns particular ly steeply banked 8 Learn rotate gently climb after takeoff Sudden application load wing near stall slow speed can cause snap-roll Sud den application aileron point can likewise 9 Use aileron differential travel up down Frise-type ailerons seldom used models extra time effort needed build wing regarded waste have negative com ments about value effectiveness must agree seem have limits small models As models become larger however has definite trend Scale Frise ailerons work just well models full-size aircraft hinge point located near below ailerons lower surface pivot point some distance back ailerons leading edge aileron moves upward overhung leading edge dips below wing surface induce drag purpose balancing drag lowered aileron opposite wing thereby controlling adverse yaw Air forced up througli hinge slot flow over up-raised aileron increased ef fectiveness Air also flows through hinge slot lowered aileron help prevent stalling aileron aileron cross section actually airfoil shape similar smaller wing Full-size aircraft use other hinge arrangements will em ploy differing methods reducing control problems such washout wing tips changing airfoils between root tips differential ailerons Some aircraft carry differential extremes DH Tiger Moth example up-trav el almost zero down direction scratch-builders -designers Scale models insist upon reproducing razor-thin wing tips prototype vulnerable tip-stall control problems Some kits have seen thickened airfoil wing tips may 100% Scale fly well forgiving control sins producers reputation established having flyable prodlucts Bob Dolly Wischer S-221 Lapham Peak Rd Delafield WI 53018 RC Aerobatics/Van Putte Continued page 51 something has tough along way have find ways improve designs ourselves circumvent rules 85 case hindsight answer can wonder protestor whatever neededwas used obtain proper judging Certainly point should made now fu ture competitions will judged properly Otherwise TA pattern has trigued apparent need new specialized aircraft have watched progress does seem some advancements have made could help define design needs clearly looks like will take time developmentno simple answer com plex requirement has think judging will tighten up meet rules Also people attempt meet needs rules will better off long run depend circumventing current-style models have some ideas would like try time will ever permit could entirely different type craft could better TA pattern Think Vegas findings example hope enjoyed Hals letter much did Theres lot good thoughts Turnaround Pat tern fliers would well ponder Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Electrics/Kopski Continued page 53 dise size price levels availa blefrom several suppliersto help experience Electric Elation first time continuing Electric success thIng find curious previous tabulation under stand price-appeal smaller motors larger ones much have hard time understanding 25s 40s dont find acceptance Per sonally fly sizes find larger planes appealing ground-handling ability appreciate extra demands place charging ways deal charging larger packs MA May June 1985 may want consider aspects plan new Electric project ElectrIc Aeromodeling Association have some turbulent times past two organizations dedicated Electric cause first SEAM Society Electric Aircraft Model ers disappeared sometime during past year far know dead issue unfortunate because SEAM original AMA-recognized spe cialty organization Electric interests have own suspicions what hap pened doesnt matter surviving organization 136 Model Aviation EAA eyes looked pretty shaky annual dues check returned nobody box number now appears have organized foothold As far Im con cerned two organizations such very small interest group downright silly though stated purposes sounded different Thus Im feeling better now personally wish EAA well Electric needs unified representative voice what promises explosive growth next decade regard II encourage write EAA PO B6Z~ Midway City CA 92655 re quest membership information Annual dues 10 bucks less gallon glow goo get quarterly news letter Silent Fly Sheet dedicated Electric interest EAA president Bob Sliff well-known Electric modeler Watts Up columnist Model Air plane News Bob runs Hobby Horn California manufactures kits some Electric suppliers Basic Electricity now should have pretty good idea handy gadgetthe multimeterworks use properly basic level re cent installments mini-series weve seen ideas behind voltmeter cur rent meter ammeter resistance meter ohmmeter functions standard analog multimeter kind mov ing pointer Before move along digital multimeter few sidelights about analog type may interest Generally some accessory utility aspects multimeters can include such things extra test-lead jacks perhaps special switch es example Radio Shack instru ment pictured has total four test-lead jacks sockets far weve detailed use twothe normal ones example shown four jacks thats always usedthe 6ne marked -COM negative com mon Connect black test lead jack right marked ositive Volts-OhmsAmps red test lead goes connections used just about purposes Almost function switch positions operate test leads connectors remaining jacks marked 000V pretty much selfexplanatory black lead -COM red lead connec tor function switch set 250 & 1000 DCV sector youre set check out new 833-cell battery remaining jack often useful Electric modelersthe A positive DC 10-amp connector black lead -COM jack red lead function switch set bA DC sec tor youre set measure smaller motor currents perhaps charging current motor battery Remem ber connect ammeters SERIES circuit under test two special jacks common multimeters separate two normal jacks because func tion switch selects multipliers shunts other ranges cannot safely handle either very high voltage very high current applied strument via connectors switch does select proper function scale meter reading unusual put levels part routed past switch contacts separate circuitry Most meter movements have median ical zero adjustment screw meter surface directly over pointer bearings screw moves pointer resting posi tion up down pointer can brought true zero no deflection no input present may notice pointer mechanical zero drifts different positions instrument Thus meter lying down may have same zero standing up good meter really wellbalanced movement will maintain zero position instrument stand ing side lying flat other position None meters perfectly Generally set mechanical zero meter lying flat ome cases standing straight up Some instruments shown have polarity switch two-position switch does same thing reversing test lead connec tions Thus erringly connect test leads backward such pointer would deflect downward instead up scale flick switch would correct situation Personally prefer get test leads right means dis connecting reconnecting properly Some instruments like shown have switch OFF position useful transporting multimeter OFF delicate meter movement heavily dampedthe tendency pointer swing transit well reduced Remember haul meter field Next month move digital ters well also look instrument accuracy sensitivity both types mean time use enjoy expanded acquain tance multimeters sure go through manual particular product since series cannot possibly cover particulars instruments Please direct comment question SASE please author Bob Kopski 25 West End Dr Lansdale PA 19446 Happy hushed flight LZY WU2 i2V O UOU BThLD SEE OUR BACK COVER AD FOR PHOTOS EXPERT Expert R/C systems pictured new 7 ch 4 ch bath equipped dual cunver sian FM receivers Dual con version permits narrower hand less trouble adla cent channels Bath systems equipped servo re versing Bath 4 ch 7 ch nicd dual charger Mixing 7 ch anly includes aileran-rudder mixing rudderaileron mixing elevator-flap mixing flap-dawn em vatar mixing amaunt direction mixing ad lustahle 7 ch elevator aileron have dual rates engineers madel huilders have heen testing systems bath lab air fixed wing helicopter far 6 manths results have great Ser vos S-25s equipped Mitsubishi chip tar less dead band less jitter Wodd Engines has build ing servicing R/C systems tar hobby products indus trial applications since 1957 Some oar service men have over 20 years us So great R/C system smart transmitter case styling plus wide assort ment whistles bells low price backed up service department quick turn around reason able prices MALONEY 100 OK what about engine castings ia photo Jan ad published line drawing coming Ma loney 100 cubic inch magneta ignition angina show readers waking progress show ing few castings means molds finished Actually engine being tested writing 12/21/85 should have engines stock February 85 Some Maloney 100 advan tages burns inexpensive gas oline Has magneto plus electronic ignition Small size means its startable common size starters Exhaust comes oat direction elect Small engine small models fits new kits developed tar 90/120 size four strokes P QQO~ii 8960 ROSSASH AVE CINCINNATI OHIO 45236 PHONE 513 793-5900 TELEX 214557 March 1986 137
Edition: Model Aviation - 1986/03
Page Numbers: 50, 51, 136, 137
Sport Aerobatics Ron Van Putte ANSWERING mail first order business September 1985 column contained section about Pattern sandbaggers guys dont move up next class after accumulating 100 points class received teresting letter Del Rykert Batavia NY said part have seen what suspect sandbagging during five years Pattern competitor started what called Novice now called Sportsman R VP best placed third contest trophy saw before earning 100 points moving up Advanced real ize sandbagging has helped contrib ute frustration winning lets examine another side problem see doing fun feel everyone should least place cou ple firsts seconds before moving up next class What happened went Nats came twelfth out 50-some contestants earned lot points pushed up can see person can easily pushed up Expert goes Nats regularly never see glory might contribute problem Pattern attendance some contests Im doing well make two three contests year go Nats earn lot points makes wonder should really attend Maybe fair what need compromise between old new sconng systems Everyone likes see little glory now especially after lots practice hard work come low winners circle very frustrating scoring changes took place energy crunch took hold wonder did help hurt attend ance much gas shortage did Maybe About CDs turning placement sheets AMA keeping track points feel may solution problem effort streamline make very cost-effective maybe people come first second third should turned sandbaggers would hanging out never thought Dels viewpoint Get ting trophy nice seems experience typical dont earn twelfth place out 50 fliers Sportsman being very good flier Im really surprised hasnt placed better local contests hes attended must have very good group fliers com pete against up Batavia NY Actually CD reports AMA top five placings event local contest also records total number contestants class Del certainly right about top places containing sandbaggers real ly wouldnt tough compute ad vancement points top five finishers load computer adding previously-entered points Can imagine surprise sandbagger would feel upon receiving letter con gratulations AMA informing him promotion next class beginning next year addition sandbagger entered event no longer entitled compete during suc ceeding year computer would catch could notified transgres sion can think few fliers should get letters already about some feedback Tell AMA RC Aerobatics Contest Board member district Look name Competition Directory section Competition Newsletter Its printed issue Model Aviation After telling well Sears Filled Epoxy Cement works expected Id get let ters fliers corners coun try saying wasnt available live Well happened Ive gotten bunch letters intended let everyone know Sears store gets went down store find out Guess what dont carry either Apparently recently dropped store 50 Model Aviation thought might like look back Pattern 19 years agoat 1967 Nats photos month meet held California sharpiooking Class 3 ship John B Sabines L original-design Crocagator hes Mobile AL Don Coleman helper Don lived Citronelle AL Official US Navy photo Planes look familiar Theyre Lew Androws Sportmaster kitsalso Class 3 entries Fliers Ernie 1-luber 1Beverly MA Dennis 0 Sawyer RSomerville MA Cylin dor head Ernies plane looks odd because fore-and-aft twin plug featureproba bly Merco 49 Note neither engine has muffier Official US Navy photo catalog suggested try contact ing main buyers Chicago deter made Sears havent successful yet Does anyone out know next letter received Harold deBolt appreciate impact letter requires bit background started flying RC summer 1954 yes am fully aware 31 years ago Id appreciate didnt remind Thank first airplane deBolt Kitten produced deBolt Model Engineering Company Harold deBolt owner Hal pioneers RC produced early kits Trainer Champion Viscount Kitten few manufactured first retractable gear mechanisms RC airplanes first Pat tern fliers first watched him com pete Pattern contest Dayton OH 1964 competed Pattern contests years before moving Pylon Rac ing inducted AMA Hall Fame 1976 What would reaction wrote man heroes very impressed As can imagine read letter very carefully January MA writing caused wonder enough quick note have out Pattern years still maintain keen interest read observations diligently Very informative Pilot Walter L Schroder Jr prepares guide hisCiassi entryassoonasLoyd E Sager Riverside CA gets engine started Wait resided Bedford NY Class i Pattern planes could have rudder engine controlhence thatdihedral Carefullyeyeballingtheen gines thrust line indicates its got lots up-thrust Yes arrangement used throttle give effect elevator control Hows bending rules Class 2 planes could use rud der elevator engine control Ciass3shipswere full-house rud der elevator aileron engine control class distinctive design features cope controls allowedas wit ness typical Class 1 plane Walter flying Official US Navy photograph First little historyI think back Seventies maybe Sixties some us thought time come turn around-style pattern Two objectives basicallyfirst reduce flight time increasing number judged maneuvers Turnaround TA maneuvers necessity judge Some regular maneuvers could used TA Wingover Immelrnann Split 5 etc lot work done flight plan get right presented detail magazinemaybe Model Airplane News initial reaction extensive negative just saw present FAI rules no box need fly tighter obvious time average Pattern flier just ready such change though need great So has taken time get something similar good see some acceptance now current comments excellent read PAl rule cer tainly definite about flying box hard see World Champs can judged following rules letter no loop holes case justify what appar ently done suppose contestants find hard fly rules call has always name game what asked best can Continued page 136 TOLEDO THIRTY-SECOND ANNUAL RADIO CONTROL EXPOSITION TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO APRIL 11 12 & 13 1986 presented Weak Signals RIO Club Toledo Ohio Exposition information available contacting Wayne Yeager co-director ticket address shown below ADVANCE TICKETS may ordered sending self-addressed-stamped busi ness size 4 x 9 envelope Tickets 38235 Castle Romulus Michigan 48174 phone 313 941-6661 Canadian orders must contain International Postal Cou pon instead stamps Include check money order US funds made payable Weak Signals R/C Club along 25 cents per order handling charge must state expo days tickets used prices $400 per day adults $100 per day children 12 under Ticket sales final non-refundable tickets along program will returned near mid-March COMPETITION CLASSES NON-MILITARY SPORT SCALE PLANE AMA Rules MILITARY SPORT SCALE PLANE AMA Rules PRECISION SCALE PLANE AMA Rules PATTERN PLANE SPORT MONO-PLANE non-scale models SPORT 81-PLANE non-scale models OLD TIMER FREE FLIGHT R/C ASSIST R/C SAILPLANE non-scale models HELICOPTER R/C CAR COMPETITION BOAT MILITARY SCALE BOAT PLEASURE POWER BOAT WORKING VESSEL-UNARMED March 1986 51 PRECISION SAND AND SHAPE With. 4 Custom Aluminum MINI Extrusion Sanding Block TEE8AREspecially designed -for small sanding jobs Sander Pack contains 3 sheets assorted die-cut sandpaper Regular lengtl~ le length 10718for21 7/8 handy use TEE PB bigger jobs truer surfaces Regular Double Self Adhesive Sheet Sandpaper Customize sanding like pros 369 xli abeets per pack 12 medaa 12 fne 12 saperfne per sheet Post add 20% Catalog 25 APPLIED DESIGN CORP El Segundo CA 90245 [DCO SKY D[VI[ 65 Ignition Approved 90 Da' Warraiitv Twin Ball Bearing Crank Americas finest old-timer e4gine Originally designed Hassad & Havlik replica engine resonic tuning ensures continuous flow power through speed range Look out green one$ goodbye red headT&Ds replica Sky Devil 65 $279 less coil cond & plug Caht icsidents add 6% sales tax ORDR DIRCT T&D RESEARCH Assocmms 6371 El Cajon Blvd Suite 115 San Dicgo CA 92115 $1 FOR BROCHURE junction aileron stop adverse yaw 3 full-size plane washout built its wing tips use model also 4 full-size Frise-type ailerons hinges near lower sur face use model 5 Use cou pled aileron rudder some transmit ters offer option 6 Build lighterweight models 7 Learn gentle transmitter control stick enter ing recovering turns particular ly steeply banked 8 Learn rotate gently climb after takeoff Sudden application load wing near stall slow speed can cause snap-roll Sud den application aileron point can likewise 9 Use aileron differential travel up down Frise-type ailerons seldom used models extra time effort needed build wing regarded waste have negative com ments about value effectiveness must agree seem have limits small models As models become larger however has definite trend Scale Frise ailerons work just well models full-size aircraft hinge point located near below ailerons lower surface pivot point some distance back ailerons leading edge aileron moves upward overhung leading edge dips below wing surface induce drag purpose balancing drag lowered aileron opposite wing thereby controlling adverse yaw Air forced up througli hinge slot flow over up-raised aileron increased ef fectiveness Air also flows through hinge slot lowered aileron help prevent stalling aileron aileron cross section actually airfoil shape similar smaller wing Full-size aircraft use other hinge arrangements will em ploy differing methods reducing control problems such washout wing tips changing airfoils between root tips differential ailerons Some aircraft carry differential extremes DH Tiger Moth example up-trav el almost zero down direction scratch-builders -designers Scale models insist upon reproducing razor-thin wing tips prototype vulnerable tip-stall control problems Some kits have seen thickened airfoil wing tips may 100% Scale fly well forgiving control sins producers reputation established having flyable prodlucts Bob Dolly Wischer S-221 Lapham Peak Rd Delafield WI 53018 RC Aerobatics/Van Putte Continued page 51 something has tough along way have find ways improve designs ourselves circumvent rules 85 case hindsight answer can wonder protestor whatever neededwas used obtain proper judging Certainly point should made now fu ture competitions will judged properly Otherwise TA pattern has trigued apparent need new specialized aircraft have watched progress does seem some advancements have made could help define design needs clearly looks like will take time developmentno simple answer com plex requirement has think judging will tighten up meet rules Also people attempt meet needs rules will better off long run depend circumventing current-style models have some ideas would like try time will ever permit could entirely different type craft could better TA pattern Think Vegas findings example hope enjoyed Hals letter much did Theres lot good thoughts Turnaround Pat tern fliers would well ponder Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Electrics/Kopski Continued page 53 dise size price levels availa blefrom several suppliersto help experience Electric Elation first time continuing Electric success thIng find curious previous tabulation under stand price-appeal smaller motors larger ones much have hard time understanding 25s 40s dont find acceptance Per sonally fly sizes find larger planes appealing ground-handling ability appreciate extra demands place charging ways deal charging larger packs MA May June 1985 may want consider aspects plan new Electric project ElectrIc Aeromodeling Association have some turbulent times past two organizations dedicated Electric cause first SEAM Society Electric Aircraft Model ers disappeared sometime during past year far know dead issue unfortunate because SEAM original AMA-recognized spe cialty organization Electric interests have own suspicions what hap pened doesnt matter surviving organization 136 Model Aviation EAA eyes looked pretty shaky annual dues check returned nobody box number now appears have organized foothold As far Im con cerned two organizations such very small interest group downright silly though stated purposes sounded different Thus Im feeling better now personally wish EAA well Electric needs unified representative voice what promises explosive growth next decade regard II encourage write EAA PO B6Z~ Midway City CA 92655 re quest membership information Annual dues 10 bucks less gallon glow goo get quarterly news letter Silent Fly Sheet dedicated Electric interest EAA president Bob Sliff well-known Electric modeler Watts Up columnist Model Air plane News Bob runs Hobby Horn California manufactures kits some Electric suppliers Basic Electricity now should have pretty good idea handy gadgetthe multimeterworks use properly basic level re cent installments mini-series weve seen ideas behind voltmeter cur rent meter ammeter resistance meter ohmmeter functions standard analog multimeter kind mov ing pointer Before move along digital multimeter few sidelights about analog type may interest Generally some accessory utility aspects multimeters can include such things extra test-lead jacks perhaps special switch es example Radio Shack instru ment pictured has total four test-lead jacks sockets far weve detailed use twothe normal ones example shown four jacks thats always usedthe 6ne marked -COM negative com mon Connect black test lead jack right marked ositive Volts-OhmsAmps red test lead goes connections used just about purposes Almost function switch positions operate test leads connectors remaining jacks marked 000V pretty much selfexplanatory black lead -COM red lead connec tor function switch set 250 & 1000 DCV sector youre set check out new 833-cell battery remaining jack often useful Electric modelersthe A positive DC 10-amp connector black lead -COM jack red lead function switch set bA DC sec tor youre set measure smaller motor currents perhaps charging current motor battery Remem ber connect ammeters SERIES circuit under test two special jacks common multimeters separate two normal jacks because func tion switch selects multipliers shunts other ranges cannot safely handle either very high voltage very high current applied strument via connectors switch does select proper function scale meter reading unusual put levels part routed past switch contacts separate circuitry Most meter movements have median ical zero adjustment screw meter surface directly over pointer bearings screw moves pointer resting posi tion up down pointer can brought true zero no deflection no input present may notice pointer mechanical zero drifts different positions instrument Thus meter lying down may have same zero standing up good meter really wellbalanced movement will maintain zero position instrument stand ing side lying flat other position None meters perfectly Generally set mechanical zero meter lying flat ome cases standing straight up Some instruments shown have polarity switch two-position switch does same thing reversing test lead connec tions Thus erringly connect test leads backward such pointer would deflect downward instead up scale flick switch would correct situation Personally prefer get test leads right means dis connecting reconnecting properly Some instruments like shown have switch OFF position useful transporting multimeter OFF delicate meter movement heavily dampedthe tendency pointer swing transit well reduced Remember haul meter field Next month move digital ters well also look instrument accuracy sensitivity both types mean time use enjoy expanded acquain tance multimeters sure go through manual particular product since series cannot possibly cover particulars instruments Please direct comment question SASE please author Bob Kopski 25 West End Dr Lansdale PA 19446 Happy hushed flight LZY WU2 i2V O UOU BThLD SEE OUR BACK COVER AD FOR PHOTOS EXPERT Expert R/C systems pictured new 7 ch 4 ch bath equipped dual cunver sian FM receivers Dual con version permits narrower hand less trouble adla cent channels Bath systems equipped servo re versing Bath 4 ch 7 ch nicd dual charger Mixing 7 ch anly includes aileran-rudder mixing rudderaileron mixing elevator-flap mixing flap-dawn em vatar mixing amaunt direction mixing ad lustahle 7 ch elevator aileron have dual rates engineers madel huilders have heen testing systems bath lab air fixed wing helicopter far 6 manths results have great Ser vos S-25s equipped Mitsubishi chip tar less dead band less jitter Wodd Engines has build ing servicing R/C systems tar hobby products indus trial applications since 1957 Some oar service men have over 20 years us So great R/C system smart transmitter case styling plus wide assort ment whistles bells low price backed up service department quick turn around reason able prices MALONEY 100 OK what about engine castings ia photo Jan ad published line drawing coming Ma loney 100 cubic inch magneta ignition angina show readers waking progress show ing few castings means molds finished Actually engine being tested writing 12/21/85 should have engines stock February 85 Some Maloney 100 advan tages burns inexpensive gas oline Has magneto plus electronic ignition Small size means its startable common size starters Exhaust comes oat direction elect Small engine small models fits new kits developed tar 90/120 size four strokes P QQO~ii 8960 ROSSASH AVE CINCINNATI OHIO 45236 PHONE 513 793-5900 TELEX 214557 March 1986 137
Edition: Model Aviation - 1986/03
Page Numbers: 50, 51, 136, 137
Sport Aerobatics Ron Van Putte ANSWERING mail first order business September 1985 column contained section about Pattern sandbaggers guys dont move up next class after accumulating 100 points class received teresting letter Del Rykert Batavia NY said part have seen what suspect sandbagging during five years Pattern competitor started what called Novice now called Sportsman R VP best placed third contest trophy saw before earning 100 points moving up Advanced real ize sandbagging has helped contrib ute frustration winning lets examine another side problem see doing fun feel everyone should least place cou ple firsts seconds before moving up next class What happened went Nats came twelfth out 50-some contestants earned lot points pushed up can see person can easily pushed up Expert goes Nats regularly never see glory might contribute problem Pattern attendance some contests Im doing well make two three contests year go Nats earn lot points makes wonder should really attend Maybe fair what need compromise between old new sconng systems Everyone likes see little glory now especially after lots practice hard work come low winners circle very frustrating scoring changes took place energy crunch took hold wonder did help hurt attend ance much gas shortage did Maybe About CDs turning placement sheets AMA keeping track points feel may solution problem effort streamline make very cost-effective maybe people come first second third should turned sandbaggers would hanging out never thought Dels viewpoint Get ting trophy nice seems experience typical dont earn twelfth place out 50 fliers Sportsman being very good flier Im really surprised hasnt placed better local contests hes attended must have very good group fliers com pete against up Batavia NY Actually CD reports AMA top five placings event local contest also records total number contestants class Del certainly right about top places containing sandbaggers real ly wouldnt tough compute ad vancement points top five finishers load computer adding previously-entered points Can imagine surprise sandbagger would feel upon receiving letter con gratulations AMA informing him promotion next class beginning next year addition sandbagger entered event no longer entitled compete during suc ceeding year computer would catch could notified transgres sion can think few fliers should get letters already about some feedback Tell AMA RC Aerobatics Contest Board member district Look name Competition Directory section Competition Newsletter Its printed issue Model Aviation After telling well Sears Filled Epoxy Cement works expected Id get let ters fliers corners coun try saying wasnt available live Well happened Ive gotten bunch letters intended let everyone know Sears store gets went down store find out Guess what dont carry either Apparently recently dropped store 50 Model Aviation thought might like look back Pattern 19 years agoat 1967 Nats photos month meet held California sharpiooking Class 3 ship John B Sabines L original-design Crocagator hes Mobile AL Don Coleman helper Don lived Citronelle AL Official US Navy photo Planes look familiar Theyre Lew Androws Sportmaster kitsalso Class 3 entries Fliers Ernie 1-luber 1Beverly MA Dennis 0 Sawyer RSomerville MA Cylin dor head Ernies plane looks odd because fore-and-aft twin plug featureproba bly Merco 49 Note neither engine has muffier Official US Navy photo catalog suggested try contact ing main buyers Chicago deter made Sears havent successful yet Does anyone out know next letter received Harold deBolt appreciate impact letter requires bit background started flying RC summer 1954 yes am fully aware 31 years ago Id appreciate didnt remind Thank first airplane deBolt Kitten produced deBolt Model Engineering Company Harold deBolt owner Hal pioneers RC produced early kits Trainer Champion Viscount Kitten few manufactured first retractable gear mechanisms RC airplanes first Pat tern fliers first watched him com pete Pattern contest Dayton OH 1964 competed Pattern contests years before moving Pylon Rac ing inducted AMA Hall Fame 1976 What would reaction wrote man heroes very impressed As can imagine read letter very carefully January MA writing caused wonder enough quick note have out Pattern years still maintain keen interest read observations diligently Very informative Pilot Walter L Schroder Jr prepares guide hisCiassi entryassoonasLoyd E Sager Riverside CA gets engine started Wait resided Bedford NY Class i Pattern planes could have rudder engine controlhence thatdihedral Carefullyeyeballingtheen gines thrust line indicates its got lots up-thrust Yes arrangement used throttle give effect elevator control Hows bending rules Class 2 planes could use rud der elevator engine control Ciass3shipswere full-house rud der elevator aileron engine control class distinctive design features cope controls allowedas wit ness typical Class 1 plane Walter flying Official US Navy photograph First little historyI think back Seventies maybe Sixties some us thought time come turn around-style pattern Two objectives basicallyfirst reduce flight time increasing number judged maneuvers Turnaround TA maneuvers necessity judge Some regular maneuvers could used TA Wingover Immelrnann Split 5 etc lot work done flight plan get right presented detail magazinemaybe Model Airplane News initial reaction extensive negative just saw present FAI rules no box need fly tighter obvious time average Pattern flier just ready such change though need great So has taken time get something similar good see some acceptance now current comments excellent read PAl rule cer tainly definite about flying box hard see World Champs can judged following rules letter no loop holes case justify what appar ently done suppose contestants find hard fly rules call has always name game what asked best can Continued page 136 TOLEDO THIRTY-SECOND ANNUAL RADIO CONTROL EXPOSITION TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO APRIL 11 12 & 13 1986 presented Weak Signals RIO Club Toledo Ohio Exposition information available contacting Wayne Yeager co-director ticket address shown below ADVANCE TICKETS may ordered sending self-addressed-stamped busi ness size 4 x 9 envelope Tickets 38235 Castle Romulus Michigan 48174 phone 313 941-6661 Canadian orders must contain International Postal Cou pon instead stamps Include check money order US funds made payable Weak Signals R/C Club along 25 cents per order handling charge must state expo days tickets used prices $400 per day adults $100 per day children 12 under Ticket sales final non-refundable tickets along program will returned near mid-March COMPETITION CLASSES NON-MILITARY SPORT SCALE PLANE AMA Rules MILITARY SPORT SCALE PLANE AMA Rules PRECISION SCALE PLANE AMA Rules PATTERN PLANE SPORT MONO-PLANE non-scale models SPORT 81-PLANE non-scale models OLD TIMER FREE FLIGHT R/C ASSIST R/C SAILPLANE non-scale models HELICOPTER R/C CAR COMPETITION BOAT MILITARY SCALE BOAT PLEASURE POWER BOAT WORKING VESSEL-UNARMED March 1986 51 PRECISION SAND AND SHAPE With. 4 Custom Aluminum MINI Extrusion Sanding Block TEE8AREspecially designed -for small sanding jobs Sander Pack contains 3 sheets assorted die-cut sandpaper Regular lengtl~ le length 10718for21 7/8 handy use TEE PB bigger jobs truer surfaces Regular Double Self Adhesive Sheet Sandpaper Customize sanding like pros 369 xli abeets per pack 12 medaa 12 fne 12 saperfne per sheet Post add 20% Catalog 25 APPLIED DESIGN CORP El Segundo CA 90245 [DCO SKY D[VI[ 65 Ignition Approved 90 Da' Warraiitv Twin Ball Bearing Crank Americas finest old-timer e4gine Originally designed Hassad & Havlik replica engine resonic tuning ensures continuous flow power through speed range Look out green one$ goodbye red headT&Ds replica Sky Devil 65 $279 less coil cond & plug Caht icsidents add 6% sales tax ORDR DIRCT T&D RESEARCH Assocmms 6371 El Cajon Blvd Suite 115 San Dicgo CA 92115 $1 FOR BROCHURE junction aileron stop adverse yaw 3 full-size plane washout built its wing tips use model also 4 full-size Frise-type ailerons hinges near lower sur face use model 5 Use cou pled aileron rudder some transmit ters offer option 6 Build lighterweight models 7 Learn gentle transmitter control stick enter ing recovering turns particular ly steeply banked 8 Learn rotate gently climb after takeoff Sudden application load wing near stall slow speed can cause snap-roll Sud den application aileron point can likewise 9 Use aileron differential travel up down Frise-type ailerons seldom used models extra time effort needed build wing regarded waste have negative com ments about value effectiveness must agree seem have limits small models As models become larger however has definite trend Scale Frise ailerons work just well models full-size aircraft hinge point located near below ailerons lower surface pivot point some distance back ailerons leading edge aileron moves upward overhung leading edge dips below wing surface induce drag purpose balancing drag lowered aileron opposite wing thereby controlling adverse yaw Air forced up througli hinge slot flow over up-raised aileron increased ef fectiveness Air also flows through hinge slot lowered aileron help prevent stalling aileron aileron cross section actually airfoil shape similar smaller wing Full-size aircraft use other hinge arrangements will em ploy differing methods reducing control problems such washout wing tips changing airfoils between root tips differential ailerons Some aircraft carry differential extremes DH Tiger Moth example up-trav el almost zero down direction scratch-builders -designers Scale models insist upon reproducing razor-thin wing tips prototype vulnerable tip-stall control problems Some kits have seen thickened airfoil wing tips may 100% Scale fly well forgiving control sins producers reputation established having flyable prodlucts Bob Dolly Wischer S-221 Lapham Peak Rd Delafield WI 53018 RC Aerobatics/Van Putte Continued page 51 something has tough along way have find ways improve designs ourselves circumvent rules 85 case hindsight answer can wonder protestor whatever neededwas used obtain proper judging Certainly point should made now fu ture competitions will judged properly Otherwise TA pattern has trigued apparent need new specialized aircraft have watched progress does seem some advancements have made could help define design needs clearly looks like will take time developmentno simple answer com plex requirement has think judging will tighten up meet rules Also people attempt meet needs rules will better off long run depend circumventing current-style models have some ideas would like try time will ever permit could entirely different type craft could better TA pattern Think Vegas findings example hope enjoyed Hals letter much did Theres lot good thoughts Turnaround Pat tern fliers would well ponder Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Electrics/Kopski Continued page 53 dise size price levels availa blefrom several suppliersto help experience Electric Elation first time continuing Electric success thIng find curious previous tabulation under stand price-appeal smaller motors larger ones much have hard time understanding 25s 40s dont find acceptance Per sonally fly sizes find larger planes appealing ground-handling ability appreciate extra demands place charging ways deal charging larger packs MA May June 1985 may want consider aspects plan new Electric project ElectrIc Aeromodeling Association have some turbulent times past two organizations dedicated Electric cause first SEAM Society Electric Aircraft Model ers disappeared sometime during past year far know dead issue unfortunate because SEAM original AMA-recognized spe cialty organization Electric interests have own suspicions what hap pened doesnt matter surviving organization 136 Model Aviation EAA eyes looked pretty shaky annual dues check returned nobody box number now appears have organized foothold As far Im con cerned two organizations such very small interest group downright silly though stated purposes sounded different Thus Im feeling better now personally wish EAA well Electric needs unified representative voice what promises explosive growth next decade regard II encourage write EAA PO B6Z~ Midway City CA 92655 re quest membership information Annual dues 10 bucks less gallon glow goo get quarterly news letter Silent Fly Sheet dedicated Electric interest EAA president Bob Sliff well-known Electric modeler Watts Up columnist Model Air plane News Bob runs Hobby Horn California manufactures kits some Electric suppliers Basic Electricity now should have pretty good idea handy gadgetthe multimeterworks use properly basic level re cent installments mini-series weve seen ideas behind voltmeter cur rent meter ammeter resistance meter ohmmeter functions standard analog multimeter kind mov ing pointer Before move along digital multimeter few sidelights about analog type may interest Generally some accessory utility aspects multimeters can include such things extra test-lead jacks perhaps special switch es example Radio Shack instru ment pictured has total four test-lead jacks sockets far weve detailed use twothe normal ones example shown four jacks thats always usedthe 6ne marked -COM negative com mon Connect black test lead jack right marked ositive Volts-OhmsAmps red test lead goes connections used just about purposes Almost function switch positions operate test leads connectors remaining jacks marked 000V pretty much selfexplanatory black lead -COM red lead connec tor function switch set 250 & 1000 DCV sector youre set check out new 833-cell battery remaining jack often useful Electric modelersthe A positive DC 10-amp connector black lead -COM jack red lead function switch set bA DC sec tor youre set measure smaller motor currents perhaps charging current motor battery Remem ber connect ammeters SERIES circuit under test two special jacks common multimeters separate two normal jacks because func tion switch selects multipliers shunts other ranges cannot safely handle either very high voltage very high current applied strument via connectors switch does select proper function scale meter reading unusual put levels part routed past switch contacts separate circuitry Most meter movements have median ical zero adjustment screw meter surface directly over pointer bearings screw moves pointer resting posi tion up down pointer can brought true zero no deflection no input present may notice pointer mechanical zero drifts different positions instrument Thus meter lying down may have same zero standing up good meter really wellbalanced movement will maintain zero position instrument stand ing side lying flat other position None meters perfectly Generally set mechanical zero meter lying flat ome cases standing straight up Some instruments shown have polarity switch two-position switch does same thing reversing test lead connec tions Thus erringly connect test leads backward such pointer would deflect downward instead up scale flick switch would correct situation Personally prefer get test leads right means dis connecting reconnecting properly Some instruments like shown have switch OFF position useful transporting multimeter OFF delicate meter movement heavily dampedthe tendency pointer swing transit well reduced Remember haul meter field Next month move digital ters well also look instrument accuracy sensitivity both types mean time use enjoy expanded acquain tance multimeters sure go through manual particular product since series cannot possibly cover particulars instruments Please direct comment question SASE please author Bob Kopski 25 West End Dr Lansdale PA 19446 Happy hushed flight LZY WU2 i2V O UOU BThLD SEE OUR BACK COVER AD FOR PHOTOS EXPERT Expert R/C systems pictured new 7 ch 4 ch bath equipped dual cunver sian FM receivers Dual con version permits narrower hand less trouble adla cent channels Bath systems equipped servo re versing Bath 4 ch 7 ch nicd dual charger Mixing 7 ch anly includes aileran-rudder mixing rudderaileron mixing elevator-flap mixing flap-dawn em vatar mixing amaunt direction mixing ad lustahle 7 ch elevator aileron have dual rates engineers madel huilders have heen testing systems bath lab air fixed wing helicopter far 6 manths results have great Ser vos S-25s equipped Mitsubishi chip tar less dead band less jitter Wodd Engines has build ing servicing R/C systems tar hobby products indus trial applications since 1957 Some oar service men have over 20 years us So great R/C system smart transmitter case styling plus wide assort ment whistles bells low price backed up service department quick turn around reason able prices MALONEY 100 OK what about engine castings ia photo Jan ad published line drawing coming Ma loney 100 cubic inch magneta ignition angina show readers waking progress show ing few castings means molds finished Actually engine being tested writing 12/21/85 should have engines stock February 85 Some Maloney 100 advan tages burns inexpensive gas oline Has magneto plus electronic ignition Small size means its startable common size starters Exhaust comes oat direction elect Small engine small models fits new kits developed tar 90/120 size four strokes P QQO~ii 8960 ROSSASH AVE CINCINNATI OHIO 45236 PHONE 513 793-5900 TELEX 214557 March 1986 137