John F Kilsdonk THE youd like have go CL racing RACE. MOST HUMANS have basic need compete may happen job neighborhood sports hobbies hobby model airplanes have urge compete enter contests Normally model entered against several other peoples models end meet scores day compared winner decided ultimate competition course head head flying Racing events ob viously fit situation knowledge B Team Racing first official racing event en joyed great popularity mid late 1950s can remember going out Rouge Park Detroit Strathmoor Contests 1956 seeing 50 team racers Grad ually though interest B-TR died Rat Race started gain popularity original Rat Racers nothing Ringmasters green-head K&Bs Foxes evolved present sleek-looking cowled racers fitted high-powered 40s Goodyear also gained popularity through promotions Cal Smith followed Tulsa group given final push full-fledged recog nition consolidated effort several Midwest clubs Editors Note Cali fornians Keith Storey Les McBray er brought prototypes two team racers Nationals Olathe Kan late 40s Storey initial pro moter racing idea control-line also RC Pylon Racing Storeys TR model Key kitted Berkeley published old Air Trails McBrayers model published Mechanix Illustrated Smith Skyraider won first Carrier event ever held wrote fine articles popularized both TR Carrier 1975 saw e Race gain official status 1976 year Slow Rat Race finally made grade Meanwhile FAI TR still popular European countries although its supported small group USA future may bring other new Racing events such Big 40 Goodyear 15 Rat Race etc Some present events may lose popularity always will some forms CL Racing Racing events require just model powerful engine Additionally require team work physical dexterity practice strategy luck feel requirements make racing events unique also put events pinnacle CL events secretly believe challenging of AMA events article intended complement previous constructiofi articles various CL racing models Hopefully will answer some questions new competitors have just finished new model wonder What now first step select team consist ing pit man pilot selec tion team members certain consid erations should made based least prior qualifications member should what Obviously se lected pilot should have some good basic experience flying fact may good combat stunt flier means 48 Model Aviation technique putting finger contacts profile model ammeter attached battery shows condition glow plug picture shows proper finger contact position cowlea rai racer Important team work dexterity practice strategy feel put down inexperience experts briefing will prove invaluable flyit very little actual flying maneuver ing racing planes requires little skill Usually planes quite insensi tive wont maneuver very well way However pilot must have de velop good deal physical dexterity reflexes case Rat Race must have some brute physical strength Additionally taller pilot also ad vantage although absolutely neces sary Left-handed pilots big disad vantage Physical dexterity knowing what feet rest body something must developed Being able run fast important cause dont want run around circle want walk tight circle later General physical con dition quite important fast events such Rat Race Goodyear John Ballard claims runs five miles per day stay shape Personally some jogging mile couple days week addition some tennis although gen eral well-being flying order put team mem bers proper position necessary understand basic field layout racing events Fig 1 Depending facilities available configuration may vary However basic layout should used whenever possible events ex cept events use slightly dif ferent dimensions can consult rule book Area flying zone Pilots should stay area flying landings takeoffs should stay Area B Area C no-no zone Nobody should area during race Area D pitting zone pitting including ini tial starts confined area During landings takeoffs pilot should maintain crouched position Area B avoid snagging head other fliers lines plane being serviced should squat down keep flying handle near ground lines ground OK now youve gotten team together whats next Practice Practice single im portant thing preparation race Both pilot pit man must learn practice individual respon sibilities also must work together team First off must get familiar model practice flying alone Prac tice flying alone until basic systems routines working well get someone else fly Fly ing two other people circle lot different flying alone Although both pilot pit man comprise team both have different distinct re sponsibilities pit man team leader should call shots must very familiar operating char acteristics engine fuel shutoff addition personal equipment battery system fuel refilling device Additionally pit mans responsi bility monitor lap count deter best race strategy pit stops thing isnt obvious though pilot best able determine needle valve settings pilot hears steady drone engine addition May1977 49 Author shown tilling fuel tank prior start race Note fuel bulb right hand battery pack strapped left arm Norris Sparks demonstrates proper technique catching rat racer its oatboard wing Note leather glove used protect hand being better able determine settings through maneuvering airplane pit man has difficulty hearing needle set tings once model launched espe cially two other planes flying same circle pit mans personal equipment includes some sort battery pack strapped body preferably left arm lead wires connected hot glove finger contacts have found finger contacts rings made copper pipe work best avail able hardware stores Select size fits thumb another fits finger length plenty standard pipe doesnt seem right try some copper pipe fittings Bear ing mind pipe fittings round fingers somewhat oval shape can gently squeeze pipe vise flatten out better conform fingers An ammeter series lead wires very handy readily indi cates glow plug condition have found model Rectifier 0-6 AMP meter available HO train dealers works best Refer Fig 2 schematic hook-up Once become familiar enough characteristics glow plug can use ammeter spot trouble zero reading indicates open blown plug full scale reading indi cates short circuit subtle problems can detected such flood ed engine slightly higher amp reading normal partially shorted coil plug slightly lower amp reading normal model should fitted con tacts comfortable pit man Rat Racers prefer plate outboard side cowl contact speed pan inboard side below engine other profile fuselage models such Goodyear Slow Rat models prefer brass contact under upper engine lug bare end glow plug other have seen variations seem work equally well pit man should also equipped fuel bulb syringe plastic bottle 3/16 1/4 filler tube Actually prefer 3/16 size Too large filler tube will fill too fast splash lot fuel out fast-fill thereby giving short fill Too small tube takes too much time fill tank pit man also has field catch model landing Normally wear leather glove right hand both catch model flip prop normally catch Rat Racers out board wing Goodyears Slow Rats prop hub Catching rat prop hub can really hurt Due lighter weight Goodyears Slow Rats fragile nature wings prefer catch prop OK now lets go through start mock race about two minutes fore start pilot should area B hand handle pit man should have model near outer edge area D making sure lines ground Fig 3-A good idea warm up engine prior race also keep warm will make cold start very simi lar pit stops far engine functions starting techniques con cerned like start engine two minute mark run about 15 seconds gives enough time unflood engine necessary also al lows last minute needle valve adjust ment Again about minute mark engine started run about 15 sec onds repeated third time 30 second mark After 15 second run fuel tank should refueled So about 15 seconds now left should again refuel tank also recheck glow plug ammeter Assuming everything order about 3 4 seconds fuel shut-off should opened contacts put glow plug hear go prop flipped model released good idea actually il legal push assist model take off Just before takeoff pilot should tighten up lines apply some whip get model airborne Now model air its pilots turn perform best fastest races involve minimal maneuvering model air Passing should gradual deviate slightly level flight good flying height between 10 15 feet Normal passes should go over 20 feet ground 5 10 feet above other model AMA rules prohibit flagrant whipping Fig 3H defined pilot adding forward force model offense normally given 3-lap penalty However certain times minimal amount whipping necessary no will squawk abused situations occur during takeoffs landings passing order avoid 50 Model Aviation Starting rat racer engine during pit stop Norris Sparks Again note battery ammeter left armlatter easily read position Sparks demonstrating proper technique releasing model Pit man should assist model during its takeoff C D CIRCLE -PHONE V -1/4-2 VOLT BATTERY B LEVEL G FT NGTH EVENT COPPER FINGER RINGS DETAILS GURE NO2 0 -6 AMP AMMETER \ 4 C LEVEL May1977 51 URE TAE OFF POSITIONS E PASSING penalty whipping cases should exceed half lap legal pass should start approaching model about 20 feet behind model being overtaken Fig 3-D point approaching pilot steps behind ahead overtaken pilot raising flying hand over slower pilot faster models lines should now across slower models pilot ahead model behind Fig 3-E faster pilot should immediately pull whip model until faster model about 20 feet ahead slower model Fig 3-F point normal level flight pilot position should resumed technique will minimize chance collision important pilots walk tight circle during race may involve very slight amount actual body contact times between pilots good circle about three feet diameter Fig 3-B C Deviations result unnecessary scrambling actually slows everybody down Some experienced pilots will try walk back circle Fig 3-G shortens effective flying radius subsequently decreases lap time however illegal sure fire fix other pilots tries to walk tighter circle pivot center will quickly discourage additional cheating Another subtle illegal trick pilot walk circle Fig 3-J will just stand center let other pilots run around him Both devious techniques illegal should spotted immediately event director FAI-TR requires pilot keep flying hand chest Although definitely minimizes whipping feel safe AMA style flying Although no rules governing flying hand location per se practical experience dictates position about 6 chest elbow bent down works best However depending pilots strength pull model may vary usually fly Rat Racers both hands except passes Goodyears Slow Rats an easily flown handed model flying portion race turns pure horsepower race fastest model will lead barring disaster pit stops usually tend separate pure go-fasters winners teamwork dependability come play pilot should shut engine off land model roll up pit man short length time possible pit man should catch model refuel start engine release model again minimum amount time Up until now have described fundamentals race Now lets go through simulated race talk about strategies can used things gained through experi ence probably will beneficial newcomers course very necessary practice both alone others become totally familiar model techniques racing However putting together contest another story first strategy occurs determined will flying Size up other teams Usually everybody will practice some before heat races Watch everyone make mental notes habits Some things note air speed shut-off technique pit stop time takeoffs Look anything out ordinary may cause problem during race next strategy pitting locations wind consequence 52 Model Aviation pitting locations should down wind pit locations can numbered 1 2 3 left outside circle Refer Fig 4 usually prefer No 1 position dont have land over anyones lines should pitting same time However position does have disadvantage No 2 No 3 models may have land over lines can cause line snag No 3 position has opposite advantages disadvantages No 2 position has dis advantages should last choice Again depends flying against continued page 98 May1977 53 Opposite page L R Proper pilot positions left pilot pitting other two proper flying positions three circle pro per locationsnote slight body con tact Above R Proper passing technique faster pilot steps back being passed hunches slightly allow quick pass Left pilot illegal flying positionnote relation feet others guilty walking proper circle Left pilot lining up landing Note moves out flying circle Right Right pilot line landing Note position respect other pilots BOX 511E HIGGINSVILLE MISSOURI 64037 agreed again sponsor unofficial Half-A precision aerobatics event 1977 Nationals Junior Senior Open competition will take place using com plete AMA pattern minus appearance points probable date would Satur day August 13 before after Walker Cup Flyoffs Engines limited total 051 maximum no requirement builder model rule however same plane may flown pilot Back-up model may used per AMA rules Airplanes must have iden tifying numbers per AMA rulebook ex cept numbers permissa ble event has developed popular lighthearted unofficial contest last years entry 25 spectator enthusiasm high Its worth watching fun competing event information PAMPA preci sion aerobatics write Wynn Paul 1640 Maywick Dr Lex KY 40504 Race/Kilsdonk continued page 53 next strategy involves pit race flexibility depends fuel capacity Since Rat Race Slow Rat pit required 70-lap races two pits required 140-lap races must capable least 47 laps per tank set models up go about 65-70 laps per tank Goodyear pit required 80-lap race three pits required 160-lapper requires least 40 laps per tank usually have capacity 60-65 laps per tank ideal race would have No 3 team pit first followed No 2 No 1 same lap intervals avoids possibility line snagging usually doesnt work however due differences air speeds Depending differences air speed fastest model will usually pit first followed others proportion relative air speed pilot usually has predetermined signals pit man will signal Like 40 80 120 laps Goodyear 4595 laps Rat pilot can size up strategy during race observing other models discussing other pilots model set up similar have about 20-lap cushion pit can used advantage pit either before after others right pit man has signaled pit pilot has determined best time should initiate shut down tripping shutoff slow MORE wi/A 13orn dIpw same powerYELLOW ~eteeteduePltCYX e~JBddC e\Wet'Tao 354304 Blade63 6-4354 Pusher74 76 78 504 [v32][b-1-10-1-10]]5ZSeach84 86 88654 Z 5~435/4 97118 6364 10-4 106056 8-685411-4 11-611-81 9-6106 1 3 Blade Tractor 55-3 5-4 6-36-4 504 3 Blade Pusher 6-3504 NC 12-4 T2-5 12-6 150 ORISH BROS ST JOHN INDIANA 46373 model down should give several full-up full-down controls use models wing air brake takes lots practice Start slow keep decreasing distance slow model down gradually What try to initiate fuel shut-off about before pit area No 1 pit loca tion can use wind help out No 3 pit position doesnt work well windy days wind will tend accelerate model just before landing pit man must now catch model refuel restart engine release lot time lost can under five seconds dependably 1975 Nationals Goodyear models finals very close air speed Yet able finish ahead several faster models because total pit stop time includes shut-down landing addition pit stop takeoff back air speed An excellent total pit stop includes time lost pit stop should less 15 seconds Have someone time though get one-flip start youll surprised amount lost time Another thing concentrate consistency Remember have make excellent pit stops time just good model now airborne again team must again prepare next pit stop entire sequence including new strategy based changes race must repeated again Actual contest experience much better realistic practice field So feel youre ready go out enter some contests potential hazards unforeseen circumstances contest will probably never encounter However experience experience lots practice will make winner CL Navy Carrier/Perry continued page 31 required release can run through wing throttle arm com mon method use flap movement operate release outboard aileron Fig 3 illustrates method used quite few Carrier medelers A bellcrank can used horns mounted top flap aileron connecting rods will tension can smaller diameter Fig 4 aileron release shown Leon Ryktarsyk As flap falls allows tin-stock plate rotate thus releasing aileron deflected spring rubberband lightest simplest method aileron actuation 98 Model Aviation SERVING THE R/Cer SINCE 1953 Since weve business 24 years can sure stay offer service customers years come youre interested what have offer send $1 complete catalog Add $50 1st Class mail return [AU II Em
Edition: Model Aviation - 1977/05
Page Numbers: 48, 49, 50, 51, 52, 53, 98
Edition: Model Aviation - 1977/05
Page Numbers: 48, 49, 50, 51, 52, 53, 98
John F Kilsdonk THE youd like have go CL racing RACE. MOST HUMANS have basic need compete may happen job neighborhood sports hobbies hobby model airplanes have urge compete enter contests Normally model entered against several other peoples models end meet scores day compared winner decided ultimate competition course head head flying Racing events ob viously fit situation knowledge B Team Racing first official racing event en joyed great popularity mid late 1950s can remember going out Rouge Park Detroit Strathmoor Contests 1956 seeing 50 team racers Grad ually though interest B-TR died Rat Race started gain popularity original Rat Racers nothing Ringmasters green-head K&Bs Foxes evolved present sleek-looking cowled racers fitted high-powered 40s Goodyear also gained popularity through promotions Cal Smith followed Tulsa group given final push full-fledged recog nition consolidated effort several Midwest clubs Editors Note Cali fornians Keith Storey Les McBray er brought prototypes two team racers Nationals Olathe Kan late 40s Storey initial pro moter racing idea control-line also RC Pylon Racing Storeys TR model Key kitted Berkeley published old Air Trails McBrayers model published Mechanix Illustrated Smith Skyraider won first Carrier event ever held wrote fine articles popularized both TR Carrier 1975 saw e Race gain official status 1976 year Slow Rat Race finally made grade Meanwhile FAI TR still popular European countries although its supported small group USA future may bring other new Racing events such Big 40 Goodyear 15 Rat Race etc Some present events may lose popularity always will some forms CL Racing Racing events require just model powerful engine Additionally require team work physical dexterity practice strategy luck feel requirements make racing events unique also put events pinnacle CL events secretly believe challenging of AMA events article intended complement previous constructiofi articles various CL racing models Hopefully will answer some questions new competitors have just finished new model wonder What now first step select team consist ing pit man pilot selec tion team members certain consid erations should made based least prior qualifications member should what Obviously se lected pilot should have some good basic experience flying fact may good combat stunt flier means 48 Model Aviation technique putting finger contacts profile model ammeter attached battery shows condition glow plug picture shows proper finger contact position cowlea rai racer Important team work dexterity practice strategy feel put down inexperience experts briefing will prove invaluable flyit very little actual flying maneuver ing racing planes requires little skill Usually planes quite insensi tive wont maneuver very well way However pilot must have de velop good deal physical dexterity reflexes case Rat Race must have some brute physical strength Additionally taller pilot also ad vantage although absolutely neces sary Left-handed pilots big disad vantage Physical dexterity knowing what feet rest body something must developed Being able run fast important cause dont want run around circle want walk tight circle later General physical con dition quite important fast events such Rat Race Goodyear John Ballard claims runs five miles per day stay shape Personally some jogging mile couple days week addition some tennis although gen eral well-being flying order put team mem bers proper position necessary understand basic field layout racing events Fig 1 Depending facilities available configuration may vary However basic layout should used whenever possible events ex cept events use slightly dif ferent dimensions can consult rule book Area flying zone Pilots should stay area flying landings takeoffs should stay Area B Area C no-no zone Nobody should area during race Area D pitting zone pitting including ini tial starts confined area During landings takeoffs pilot should maintain crouched position Area B avoid snagging head other fliers lines plane being serviced should squat down keep flying handle near ground lines ground OK now youve gotten team together whats next Practice Practice single im portant thing preparation race Both pilot pit man must learn practice individual respon sibilities also must work together team First off must get familiar model practice flying alone Prac tice flying alone until basic systems routines working well get someone else fly Fly ing two other people circle lot different flying alone Although both pilot pit man comprise team both have different distinct re sponsibilities pit man team leader should call shots must very familiar operating char acteristics engine fuel shutoff addition personal equipment battery system fuel refilling device Additionally pit mans responsi bility monitor lap count deter best race strategy pit stops thing isnt obvious though pilot best able determine needle valve settings pilot hears steady drone engine addition May1977 49 Author shown tilling fuel tank prior start race Note fuel bulb right hand battery pack strapped left arm Norris Sparks demonstrates proper technique catching rat racer its oatboard wing Note leather glove used protect hand being better able determine settings through maneuvering airplane pit man has difficulty hearing needle set tings once model launched espe cially two other planes flying same circle pit mans personal equipment includes some sort battery pack strapped body preferably left arm lead wires connected hot glove finger contacts have found finger contacts rings made copper pipe work best avail able hardware stores Select size fits thumb another fits finger length plenty standard pipe doesnt seem right try some copper pipe fittings Bear ing mind pipe fittings round fingers somewhat oval shape can gently squeeze pipe vise flatten out better conform fingers An ammeter series lead wires very handy readily indi cates glow plug condition have found model Rectifier 0-6 AMP meter available HO train dealers works best Refer Fig 2 schematic hook-up Once become familiar enough characteristics glow plug can use ammeter spot trouble zero reading indicates open blown plug full scale reading indi cates short circuit subtle problems can detected such flood ed engine slightly higher amp reading normal partially shorted coil plug slightly lower amp reading normal model should fitted con tacts comfortable pit man Rat Racers prefer plate outboard side cowl contact speed pan inboard side below engine other profile fuselage models such Goodyear Slow Rat models prefer brass contact under upper engine lug bare end glow plug other have seen variations seem work equally well pit man should also equipped fuel bulb syringe plastic bottle 3/16 1/4 filler tube Actually prefer 3/16 size Too large filler tube will fill too fast splash lot fuel out fast-fill thereby giving short fill Too small tube takes too much time fill tank pit man also has field catch model landing Normally wear leather glove right hand both catch model flip prop normally catch Rat Racers out board wing Goodyears Slow Rats prop hub Catching rat prop hub can really hurt Due lighter weight Goodyears Slow Rats fragile nature wings prefer catch prop OK now lets go through start mock race about two minutes fore start pilot should area B hand handle pit man should have model near outer edge area D making sure lines ground Fig 3-A good idea warm up engine prior race also keep warm will make cold start very simi lar pit stops far engine functions starting techniques con cerned like start engine two minute mark run about 15 seconds gives enough time unflood engine necessary also al lows last minute needle valve adjust ment Again about minute mark engine started run about 15 sec onds repeated third time 30 second mark After 15 second run fuel tank should refueled So about 15 seconds now left should again refuel tank also recheck glow plug ammeter Assuming everything order about 3 4 seconds fuel shut-off should opened contacts put glow plug hear go prop flipped model released good idea actually il legal push assist model take off Just before takeoff pilot should tighten up lines apply some whip get model airborne Now model air its pilots turn perform best fastest races involve minimal maneuvering model air Passing should gradual deviate slightly level flight good flying height between 10 15 feet Normal passes should go over 20 feet ground 5 10 feet above other model AMA rules prohibit flagrant whipping Fig 3H defined pilot adding forward force model offense normally given 3-lap penalty However certain times minimal amount whipping necessary no will squawk abused situations occur during takeoffs landings passing order avoid 50 Model Aviation Starting rat racer engine during pit stop Norris Sparks Again note battery ammeter left armlatter easily read position Sparks demonstrating proper technique releasing model Pit man should assist model during its takeoff C D CIRCLE -PHONE V -1/4-2 VOLT BATTERY B LEVEL G FT NGTH EVENT COPPER FINGER RINGS DETAILS GURE NO2 0 -6 AMP AMMETER \ 4 C LEVEL May1977 51 URE TAE OFF POSITIONS E PASSING penalty whipping cases should exceed half lap legal pass should start approaching model about 20 feet behind model being overtaken Fig 3-D point approaching pilot steps behind ahead overtaken pilot raising flying hand over slower pilot faster models lines should now across slower models pilot ahead model behind Fig 3-E faster pilot should immediately pull whip model until faster model about 20 feet ahead slower model Fig 3-F point normal level flight pilot position should resumed technique will minimize chance collision important pilots walk tight circle during race may involve very slight amount actual body contact times between pilots good circle about three feet diameter Fig 3-B C Deviations result unnecessary scrambling actually slows everybody down Some experienced pilots will try walk back circle Fig 3-G shortens effective flying radius subsequently decreases lap time however illegal sure fire fix other pilots tries to walk tighter circle pivot center will quickly discourage additional cheating Another subtle illegal trick pilot walk circle Fig 3-J will just stand center let other pilots run around him Both devious techniques illegal should spotted immediately event director FAI-TR requires pilot keep flying hand chest Although definitely minimizes whipping feel safe AMA style flying Although no rules governing flying hand location per se practical experience dictates position about 6 chest elbow bent down works best However depending pilots strength pull model may vary usually fly Rat Racers both hands except passes Goodyears Slow Rats an easily flown handed model flying portion race turns pure horsepower race fastest model will lead barring disaster pit stops usually tend separate pure go-fasters winners teamwork dependability come play pilot should shut engine off land model roll up pit man short length time possible pit man should catch model refuel start engine release model again minimum amount time Up until now have described fundamentals race Now lets go through simulated race talk about strategies can used things gained through experi ence probably will beneficial newcomers course very necessary practice both alone others become totally familiar model techniques racing However putting together contest another story first strategy occurs determined will flying Size up other teams Usually everybody will practice some before heat races Watch everyone make mental notes habits Some things note air speed shut-off technique pit stop time takeoffs Look anything out ordinary may cause problem during race next strategy pitting locations wind consequence 52 Model Aviation pitting locations should down wind pit locations can numbered 1 2 3 left outside circle Refer Fig 4 usually prefer No 1 position dont have land over anyones lines should pitting same time However position does have disadvantage No 2 No 3 models may have land over lines can cause line snag No 3 position has opposite advantages disadvantages No 2 position has dis advantages should last choice Again depends flying against continued page 98 May1977 53 Opposite page L R Proper pilot positions left pilot pitting other two proper flying positions three circle pro per locationsnote slight body con tact Above R Proper passing technique faster pilot steps back being passed hunches slightly allow quick pass Left pilot illegal flying positionnote relation feet others guilty walking proper circle Left pilot lining up landing Note moves out flying circle Right Right pilot line landing Note position respect other pilots BOX 511E HIGGINSVILLE MISSOURI 64037 agreed again sponsor unofficial Half-A precision aerobatics event 1977 Nationals Junior Senior Open competition will take place using com plete AMA pattern minus appearance points probable date would Satur day August 13 before after Walker Cup Flyoffs Engines limited total 051 maximum no requirement builder model rule however same plane may flown pilot Back-up model may used per AMA rules Airplanes must have iden tifying numbers per AMA rulebook ex cept numbers permissa ble event has developed popular lighthearted unofficial contest last years entry 25 spectator enthusiasm high Its worth watching fun competing event information PAMPA preci sion aerobatics write Wynn Paul 1640 Maywick Dr Lex KY 40504 Race/Kilsdonk continued page 53 next strategy involves pit race flexibility depends fuel capacity Since Rat Race Slow Rat pit required 70-lap races two pits required 140-lap races must capable least 47 laps per tank set models up go about 65-70 laps per tank Goodyear pit required 80-lap race three pits required 160-lapper requires least 40 laps per tank usually have capacity 60-65 laps per tank ideal race would have No 3 team pit first followed No 2 No 1 same lap intervals avoids possibility line snagging usually doesnt work however due differences air speeds Depending differences air speed fastest model will usually pit first followed others proportion relative air speed pilot usually has predetermined signals pit man will signal Like 40 80 120 laps Goodyear 4595 laps Rat pilot can size up strategy during race observing other models discussing other pilots model set up similar have about 20-lap cushion pit can used advantage pit either before after others right pit man has signaled pit pilot has determined best time should initiate shut down tripping shutoff slow MORE wi/A 13orn dIpw same powerYELLOW ~eteeteduePltCYX e~JBddC e\Wet'Tao 354304 Blade63 6-4354 Pusher74 76 78 504 [v32][b-1-10-1-10]]5ZSeach84 86 88654 Z 5~435/4 97118 6364 10-4 106056 8-685411-4 11-611-81 9-6106 1 3 Blade Tractor 55-3 5-4 6-36-4 504 3 Blade Pusher 6-3504 NC 12-4 T2-5 12-6 150 ORISH BROS ST JOHN INDIANA 46373 model down should give several full-up full-down controls use models wing air brake takes lots practice Start slow keep decreasing distance slow model down gradually What try to initiate fuel shut-off about before pit area No 1 pit loca tion can use wind help out No 3 pit position doesnt work well windy days wind will tend accelerate model just before landing pit man must now catch model refuel restart engine release lot time lost can under five seconds dependably 1975 Nationals Goodyear models finals very close air speed Yet able finish ahead several faster models because total pit stop time includes shut-down landing addition pit stop takeoff back air speed An excellent total pit stop includes time lost pit stop should less 15 seconds Have someone time though get one-flip start youll surprised amount lost time Another thing concentrate consistency Remember have make excellent pit stops time just good model now airborne again team must again prepare next pit stop entire sequence including new strategy based changes race must repeated again Actual contest experience much better realistic practice field So feel youre ready go out enter some contests potential hazards unforeseen circumstances contest will probably never encounter However experience experience lots practice will make winner CL Navy Carrier/Perry continued page 31 required release can run through wing throttle arm com mon method use flap movement operate release outboard aileron Fig 3 illustrates method used quite few Carrier medelers A bellcrank can used horns mounted top flap aileron connecting rods will tension can smaller diameter Fig 4 aileron release shown Leon Ryktarsyk As flap falls allows tin-stock plate rotate thus releasing aileron deflected spring rubberband lightest simplest method aileron actuation 98 Model Aviation SERVING THE R/Cer SINCE 1953 Since weve business 24 years can sure stay offer service customers years come youre interested what have offer send $1 complete catalog Add $50 1st Class mail return [AU II Em
Edition: Model Aviation - 1977/05
Page Numbers: 48, 49, 50, 51, 52, 53, 98
John F Kilsdonk THE youd like have go CL racing RACE. MOST HUMANS have basic need compete may happen job neighborhood sports hobbies hobby model airplanes have urge compete enter contests Normally model entered against several other peoples models end meet scores day compared winner decided ultimate competition course head head flying Racing events ob viously fit situation knowledge B Team Racing first official racing event en joyed great popularity mid late 1950s can remember going out Rouge Park Detroit Strathmoor Contests 1956 seeing 50 team racers Grad ually though interest B-TR died Rat Race started gain popularity original Rat Racers nothing Ringmasters green-head K&Bs Foxes evolved present sleek-looking cowled racers fitted high-powered 40s Goodyear also gained popularity through promotions Cal Smith followed Tulsa group given final push full-fledged recog nition consolidated effort several Midwest clubs Editors Note Cali fornians Keith Storey Les McBray er brought prototypes two team racers Nationals Olathe Kan late 40s Storey initial pro moter racing idea control-line also RC Pylon Racing Storeys TR model Key kitted Berkeley published old Air Trails McBrayers model published Mechanix Illustrated Smith Skyraider won first Carrier event ever held wrote fine articles popularized both TR Carrier 1975 saw e Race gain official status 1976 year Slow Rat Race finally made grade Meanwhile FAI TR still popular European countries although its supported small group USA future may bring other new Racing events such Big 40 Goodyear 15 Rat Race etc Some present events may lose popularity always will some forms CL Racing Racing events require just model powerful engine Additionally require team work physical dexterity practice strategy luck feel requirements make racing events unique also put events pinnacle CL events secretly believe challenging of AMA events article intended complement previous constructiofi articles various CL racing models Hopefully will answer some questions new competitors have just finished new model wonder What now first step select team consist ing pit man pilot selec tion team members certain consid erations should made based least prior qualifications member should what Obviously se lected pilot should have some good basic experience flying fact may good combat stunt flier means 48 Model Aviation technique putting finger contacts profile model ammeter attached battery shows condition glow plug picture shows proper finger contact position cowlea rai racer Important team work dexterity practice strategy feel put down inexperience experts briefing will prove invaluable flyit very little actual flying maneuver ing racing planes requires little skill Usually planes quite insensi tive wont maneuver very well way However pilot must have de velop good deal physical dexterity reflexes case Rat Race must have some brute physical strength Additionally taller pilot also ad vantage although absolutely neces sary Left-handed pilots big disad vantage Physical dexterity knowing what feet rest body something must developed Being able run fast important cause dont want run around circle want walk tight circle later General physical con dition quite important fast events such Rat Race Goodyear John Ballard claims runs five miles per day stay shape Personally some jogging mile couple days week addition some tennis although gen eral well-being flying order put team mem bers proper position necessary understand basic field layout racing events Fig 1 Depending facilities available configuration may vary However basic layout should used whenever possible events ex cept events use slightly dif ferent dimensions can consult rule book Area flying zone Pilots should stay area flying landings takeoffs should stay Area B Area C no-no zone Nobody should area during race Area D pitting zone pitting including ini tial starts confined area During landings takeoffs pilot should maintain crouched position Area B avoid snagging head other fliers lines plane being serviced should squat down keep flying handle near ground lines ground OK now youve gotten team together whats next Practice Practice single im portant thing preparation race Both pilot pit man must learn practice individual respon sibilities also must work together team First off must get familiar model practice flying alone Prac tice flying alone until basic systems routines working well get someone else fly Fly ing two other people circle lot different flying alone Although both pilot pit man comprise team both have different distinct re sponsibilities pit man team leader should call shots must very familiar operating char acteristics engine fuel shutoff addition personal equipment battery system fuel refilling device Additionally pit mans responsi bility monitor lap count deter best race strategy pit stops thing isnt obvious though pilot best able determine needle valve settings pilot hears steady drone engine addition May1977 49 Author shown tilling fuel tank prior start race Note fuel bulb right hand battery pack strapped left arm Norris Sparks demonstrates proper technique catching rat racer its oatboard wing Note leather glove used protect hand being better able determine settings through maneuvering airplane pit man has difficulty hearing needle set tings once model launched espe cially two other planes flying same circle pit mans personal equipment includes some sort battery pack strapped body preferably left arm lead wires connected hot glove finger contacts have found finger contacts rings made copper pipe work best avail able hardware stores Select size fits thumb another fits finger length plenty standard pipe doesnt seem right try some copper pipe fittings Bear ing mind pipe fittings round fingers somewhat oval shape can gently squeeze pipe vise flatten out better conform fingers An ammeter series lead wires very handy readily indi cates glow plug condition have found model Rectifier 0-6 AMP meter available HO train dealers works best Refer Fig 2 schematic hook-up Once become familiar enough characteristics glow plug can use ammeter spot trouble zero reading indicates open blown plug full scale reading indi cates short circuit subtle problems can detected such flood ed engine slightly higher amp reading normal partially shorted coil plug slightly lower amp reading normal model should fitted con tacts comfortable pit man Rat Racers prefer plate outboard side cowl contact speed pan inboard side below engine other profile fuselage models such Goodyear Slow Rat models prefer brass contact under upper engine lug bare end glow plug other have seen variations seem work equally well pit man should also equipped fuel bulb syringe plastic bottle 3/16 1/4 filler tube Actually prefer 3/16 size Too large filler tube will fill too fast splash lot fuel out fast-fill thereby giving short fill Too small tube takes too much time fill tank pit man also has field catch model landing Normally wear leather glove right hand both catch model flip prop normally catch Rat Racers out board wing Goodyears Slow Rats prop hub Catching rat prop hub can really hurt Due lighter weight Goodyears Slow Rats fragile nature wings prefer catch prop OK now lets go through start mock race about two minutes fore start pilot should area B hand handle pit man should have model near outer edge area D making sure lines ground Fig 3-A good idea warm up engine prior race also keep warm will make cold start very simi lar pit stops far engine functions starting techniques con cerned like start engine two minute mark run about 15 seconds gives enough time unflood engine necessary also al lows last minute needle valve adjust ment Again about minute mark engine started run about 15 sec onds repeated third time 30 second mark After 15 second run fuel tank should refueled So about 15 seconds now left should again refuel tank also recheck glow plug ammeter Assuming everything order about 3 4 seconds fuel shut-off should opened contacts put glow plug hear go prop flipped model released good idea actually il legal push assist model take off Just before takeoff pilot should tighten up lines apply some whip get model airborne Now model air its pilots turn perform best fastest races involve minimal maneuvering model air Passing should gradual deviate slightly level flight good flying height between 10 15 feet Normal passes should go over 20 feet ground 5 10 feet above other model AMA rules prohibit flagrant whipping Fig 3H defined pilot adding forward force model offense normally given 3-lap penalty However certain times minimal amount whipping necessary no will squawk abused situations occur during takeoffs landings passing order avoid 50 Model Aviation Starting rat racer engine during pit stop Norris Sparks Again note battery ammeter left armlatter easily read position Sparks demonstrating proper technique releasing model Pit man should assist model during its takeoff C D CIRCLE -PHONE V -1/4-2 VOLT BATTERY B LEVEL G FT NGTH EVENT COPPER FINGER RINGS DETAILS GURE NO2 0 -6 AMP AMMETER \ 4 C LEVEL May1977 51 URE TAE OFF POSITIONS E PASSING penalty whipping cases should exceed half lap legal pass should start approaching model about 20 feet behind model being overtaken Fig 3-D point approaching pilot steps behind ahead overtaken pilot raising flying hand over slower pilot faster models lines should now across slower models pilot ahead model behind Fig 3-E faster pilot should immediately pull whip model until faster model about 20 feet ahead slower model Fig 3-F point normal level flight pilot position should resumed technique will minimize chance collision important pilots walk tight circle during race may involve very slight amount actual body contact times between pilots good circle about three feet diameter Fig 3-B C Deviations result unnecessary scrambling actually slows everybody down Some experienced pilots will try walk back circle Fig 3-G shortens effective flying radius subsequently decreases lap time however illegal sure fire fix other pilots tries to walk tighter circle pivot center will quickly discourage additional cheating Another subtle illegal trick pilot walk circle Fig 3-J will just stand center let other pilots run around him Both devious techniques illegal should spotted immediately event director FAI-TR requires pilot keep flying hand chest Although definitely minimizes whipping feel safe AMA style flying Although no rules governing flying hand location per se practical experience dictates position about 6 chest elbow bent down works best However depending pilots strength pull model may vary usually fly Rat Racers both hands except passes Goodyears Slow Rats an easily flown handed model flying portion race turns pure horsepower race fastest model will lead barring disaster pit stops usually tend separate pure go-fasters winners teamwork dependability come play pilot should shut engine off land model roll up pit man short length time possible pit man should catch model refuel start engine release model again minimum amount time Up until now have described fundamentals race Now lets go through simulated race talk about strategies can used things gained through experi ence probably will beneficial newcomers course very necessary practice both alone others become totally familiar model techniques racing However putting together contest another story first strategy occurs determined will flying Size up other teams Usually everybody will practice some before heat races Watch everyone make mental notes habits Some things note air speed shut-off technique pit stop time takeoffs Look anything out ordinary may cause problem during race next strategy pitting locations wind consequence 52 Model Aviation pitting locations should down wind pit locations can numbered 1 2 3 left outside circle Refer Fig 4 usually prefer No 1 position dont have land over anyones lines should pitting same time However position does have disadvantage No 2 No 3 models may have land over lines can cause line snag No 3 position has opposite advantages disadvantages No 2 position has dis advantages should last choice Again depends flying against continued page 98 May1977 53 Opposite page L R Proper pilot positions left pilot pitting other two proper flying positions three circle pro per locationsnote slight body con tact Above R Proper passing technique faster pilot steps back being passed hunches slightly allow quick pass Left pilot illegal flying positionnote relation feet others guilty walking proper circle Left pilot lining up landing Note moves out flying circle Right Right pilot line landing Note position respect other pilots BOX 511E HIGGINSVILLE MISSOURI 64037 agreed again sponsor unofficial Half-A precision aerobatics event 1977 Nationals Junior Senior Open competition will take place using com plete AMA pattern minus appearance points probable date would Satur day August 13 before after Walker Cup Flyoffs Engines limited total 051 maximum no requirement builder model rule however same plane may flown pilot Back-up model may used per AMA rules Airplanes must have iden tifying numbers per AMA rulebook ex cept numbers permissa ble event has developed popular lighthearted unofficial contest last years entry 25 spectator enthusiasm high Its worth watching fun competing event information PAMPA preci sion aerobatics write Wynn Paul 1640 Maywick Dr Lex KY 40504 Race/Kilsdonk continued page 53 next strategy involves pit race flexibility depends fuel capacity Since Rat Race Slow Rat pit required 70-lap races two pits required 140-lap races must capable least 47 laps per tank set models up go about 65-70 laps per tank Goodyear pit required 80-lap race three pits required 160-lapper requires least 40 laps per tank usually have capacity 60-65 laps per tank ideal race would have No 3 team pit first followed No 2 No 1 same lap intervals avoids possibility line snagging usually doesnt work however due differences air speeds Depending differences air speed fastest model will usually pit first followed others proportion relative air speed pilot usually has predetermined signals pit man will signal Like 40 80 120 laps Goodyear 4595 laps Rat pilot can size up strategy during race observing other models discussing other pilots model set up similar have about 20-lap cushion pit can used advantage pit either before after others right pit man has signaled pit pilot has determined best time should initiate shut down tripping shutoff slow MORE wi/A 13orn dIpw same powerYELLOW ~eteeteduePltCYX e~JBddC e\Wet'Tao 354304 Blade63 6-4354 Pusher74 76 78 504 [v32][b-1-10-1-10]]5ZSeach84 86 88654 Z 5~435/4 97118 6364 10-4 106056 8-685411-4 11-611-81 9-6106 1 3 Blade Tractor 55-3 5-4 6-36-4 504 3 Blade Pusher 6-3504 NC 12-4 T2-5 12-6 150 ORISH BROS ST JOHN INDIANA 46373 model down should give several full-up full-down controls use models wing air brake takes lots practice Start slow keep decreasing distance slow model down gradually What try to initiate fuel shut-off about before pit area No 1 pit loca tion can use wind help out No 3 pit position doesnt work well windy days wind will tend accelerate model just before landing pit man must now catch model refuel restart engine release lot time lost can under five seconds dependably 1975 Nationals Goodyear models finals very close air speed Yet able finish ahead several faster models because total pit stop time includes shut-down landing addition pit stop takeoff back air speed An excellent total pit stop includes time lost pit stop should less 15 seconds Have someone time though get one-flip start youll surprised amount lost time Another thing concentrate consistency Remember have make excellent pit stops time just good model now airborne again team must again prepare next pit stop entire sequence including new strategy based changes race must repeated again Actual contest experience much better realistic practice field So feel youre ready go out enter some contests potential hazards unforeseen circumstances contest will probably never encounter However experience experience lots practice will make winner CL Navy Carrier/Perry continued page 31 required release can run through wing throttle arm com mon method use flap movement operate release outboard aileron Fig 3 illustrates method used quite few Carrier medelers A bellcrank can used horns mounted top flap aileron connecting rods will tension can smaller diameter Fig 4 aileron release shown Leon Ryktarsyk As flap falls allows tin-stock plate rotate thus releasing aileron deflected spring rubberband lightest simplest method aileron actuation 98 Model Aviation SERVING THE R/Cer SINCE 1953 Since weve business 24 years can sure stay offer service customers years come youre interested what have offer send $1 complete catalog Add $50 1st Class mail return [AU II Em
Edition: Model Aviation - 1977/05
Page Numbers: 48, 49, 50, 51, 52, 53, 98
John F Kilsdonk THE youd like have go CL racing RACE. MOST HUMANS have basic need compete may happen job neighborhood sports hobbies hobby model airplanes have urge compete enter contests Normally model entered against several other peoples models end meet scores day compared winner decided ultimate competition course head head flying Racing events ob viously fit situation knowledge B Team Racing first official racing event en joyed great popularity mid late 1950s can remember going out Rouge Park Detroit Strathmoor Contests 1956 seeing 50 team racers Grad ually though interest B-TR died Rat Race started gain popularity original Rat Racers nothing Ringmasters green-head K&Bs Foxes evolved present sleek-looking cowled racers fitted high-powered 40s Goodyear also gained popularity through promotions Cal Smith followed Tulsa group given final push full-fledged recog nition consolidated effort several Midwest clubs Editors Note Cali fornians Keith Storey Les McBray er brought prototypes two team racers Nationals Olathe Kan late 40s Storey initial pro moter racing idea control-line also RC Pylon Racing Storeys TR model Key kitted Berkeley published old Air Trails McBrayers model published Mechanix Illustrated Smith Skyraider won first Carrier event ever held wrote fine articles popularized both TR Carrier 1975 saw e Race gain official status 1976 year Slow Rat Race finally made grade Meanwhile FAI TR still popular European countries although its supported small group USA future may bring other new Racing events such Big 40 Goodyear 15 Rat Race etc Some present events may lose popularity always will some forms CL Racing Racing events require just model powerful engine Additionally require team work physical dexterity practice strategy luck feel requirements make racing events unique also put events pinnacle CL events secretly believe challenging of AMA events article intended complement previous constructiofi articles various CL racing models Hopefully will answer some questions new competitors have just finished new model wonder What now first step select team consist ing pit man pilot selec tion team members certain consid erations should made based least prior qualifications member should what Obviously se lected pilot should have some good basic experience flying fact may good combat stunt flier means 48 Model Aviation technique putting finger contacts profile model ammeter attached battery shows condition glow plug picture shows proper finger contact position cowlea rai racer Important team work dexterity practice strategy feel put down inexperience experts briefing will prove invaluable flyit very little actual flying maneuver ing racing planes requires little skill Usually planes quite insensi tive wont maneuver very well way However pilot must have de velop good deal physical dexterity reflexes case Rat Race must have some brute physical strength Additionally taller pilot also ad vantage although absolutely neces sary Left-handed pilots big disad vantage Physical dexterity knowing what feet rest body something must developed Being able run fast important cause dont want run around circle want walk tight circle later General physical con dition quite important fast events such Rat Race Goodyear John Ballard claims runs five miles per day stay shape Personally some jogging mile couple days week addition some tennis although gen eral well-being flying order put team mem bers proper position necessary understand basic field layout racing events Fig 1 Depending facilities available configuration may vary However basic layout should used whenever possible events ex cept events use slightly dif ferent dimensions can consult rule book Area flying zone Pilots should stay area flying landings takeoffs should stay Area B Area C no-no zone Nobody should area during race Area D pitting zone pitting including ini tial starts confined area During landings takeoffs pilot should maintain crouched position Area B avoid snagging head other fliers lines plane being serviced should squat down keep flying handle near ground lines ground OK now youve gotten team together whats next Practice Practice single im portant thing preparation race Both pilot pit man must learn practice individual respon sibilities also must work together team First off must get familiar model practice flying alone Prac tice flying alone until basic systems routines working well get someone else fly Fly ing two other people circle lot different flying alone Although both pilot pit man comprise team both have different distinct re sponsibilities pit man team leader should call shots must very familiar operating char acteristics engine fuel shutoff addition personal equipment battery system fuel refilling device Additionally pit mans responsi bility monitor lap count deter best race strategy pit stops thing isnt obvious though pilot best able determine needle valve settings pilot hears steady drone engine addition May1977 49 Author shown tilling fuel tank prior start race Note fuel bulb right hand battery pack strapped left arm Norris Sparks demonstrates proper technique catching rat racer its oatboard wing Note leather glove used protect hand being better able determine settings through maneuvering airplane pit man has difficulty hearing needle set tings once model launched espe cially two other planes flying same circle pit mans personal equipment includes some sort battery pack strapped body preferably left arm lead wires connected hot glove finger contacts have found finger contacts rings made copper pipe work best avail able hardware stores Select size fits thumb another fits finger length plenty standard pipe doesnt seem right try some copper pipe fittings Bear ing mind pipe fittings round fingers somewhat oval shape can gently squeeze pipe vise flatten out better conform fingers An ammeter series lead wires very handy readily indi cates glow plug condition have found model Rectifier 0-6 AMP meter available HO train dealers works best Refer Fig 2 schematic hook-up Once become familiar enough characteristics glow plug can use ammeter spot trouble zero reading indicates open blown plug full scale reading indi cates short circuit subtle problems can detected such flood ed engine slightly higher amp reading normal partially shorted coil plug slightly lower amp reading normal model should fitted con tacts comfortable pit man Rat Racers prefer plate outboard side cowl contact speed pan inboard side below engine other profile fuselage models such Goodyear Slow Rat models prefer brass contact under upper engine lug bare end glow plug other have seen variations seem work equally well pit man should also equipped fuel bulb syringe plastic bottle 3/16 1/4 filler tube Actually prefer 3/16 size Too large filler tube will fill too fast splash lot fuel out fast-fill thereby giving short fill Too small tube takes too much time fill tank pit man also has field catch model landing Normally wear leather glove right hand both catch model flip prop normally catch Rat Racers out board wing Goodyears Slow Rats prop hub Catching rat prop hub can really hurt Due lighter weight Goodyears Slow Rats fragile nature wings prefer catch prop OK now lets go through start mock race about two minutes fore start pilot should area B hand handle pit man should have model near outer edge area D making sure lines ground Fig 3-A good idea warm up engine prior race also keep warm will make cold start very simi lar pit stops far engine functions starting techniques con cerned like start engine two minute mark run about 15 seconds gives enough time unflood engine necessary also al lows last minute needle valve adjust ment Again about minute mark engine started run about 15 sec onds repeated third time 30 second mark After 15 second run fuel tank should refueled So about 15 seconds now left should again refuel tank also recheck glow plug ammeter Assuming everything order about 3 4 seconds fuel shut-off should opened contacts put glow plug hear go prop flipped model released good idea actually il legal push assist model take off Just before takeoff pilot should tighten up lines apply some whip get model airborne Now model air its pilots turn perform best fastest races involve minimal maneuvering model air Passing should gradual deviate slightly level flight good flying height between 10 15 feet Normal passes should go over 20 feet ground 5 10 feet above other model AMA rules prohibit flagrant whipping Fig 3H defined pilot adding forward force model offense normally given 3-lap penalty However certain times minimal amount whipping necessary no will squawk abused situations occur during takeoffs landings passing order avoid 50 Model Aviation Starting rat racer engine during pit stop Norris Sparks Again note battery ammeter left armlatter easily read position Sparks demonstrating proper technique releasing model Pit man should assist model during its takeoff C D CIRCLE -PHONE V -1/4-2 VOLT BATTERY B LEVEL G FT NGTH EVENT COPPER FINGER RINGS DETAILS GURE NO2 0 -6 AMP AMMETER \ 4 C LEVEL May1977 51 URE TAE OFF POSITIONS E PASSING penalty whipping cases should exceed half lap legal pass should start approaching model about 20 feet behind model being overtaken Fig 3-D point approaching pilot steps behind ahead overtaken pilot raising flying hand over slower pilot faster models lines should now across slower models pilot ahead model behind Fig 3-E faster pilot should immediately pull whip model until faster model about 20 feet ahead slower model Fig 3-F point normal level flight pilot position should resumed technique will minimize chance collision important pilots walk tight circle during race may involve very slight amount actual body contact times between pilots good circle about three feet diameter Fig 3-B C Deviations result unnecessary scrambling actually slows everybody down Some experienced pilots will try walk back circle Fig 3-G shortens effective flying radius subsequently decreases lap time however illegal sure fire fix other pilots tries to walk tighter circle pivot center will quickly discourage additional cheating Another subtle illegal trick pilot walk circle Fig 3-J will just stand center let other pilots run around him Both devious techniques illegal should spotted immediately event director FAI-TR requires pilot keep flying hand chest Although definitely minimizes whipping feel safe AMA style flying Although no rules governing flying hand location per se practical experience dictates position about 6 chest elbow bent down works best However depending pilots strength pull model may vary usually fly Rat Racers both hands except passes Goodyears Slow Rats an easily flown handed model flying portion race turns pure horsepower race fastest model will lead barring disaster pit stops usually tend separate pure go-fasters winners teamwork dependability come play pilot should shut engine off land model roll up pit man short length time possible pit man should catch model refuel start engine release model again minimum amount time Up until now have described fundamentals race Now lets go through simulated race talk about strategies can used things gained through experi ence probably will beneficial newcomers course very necessary practice both alone others become totally familiar model techniques racing However putting together contest another story first strategy occurs determined will flying Size up other teams Usually everybody will practice some before heat races Watch everyone make mental notes habits Some things note air speed shut-off technique pit stop time takeoffs Look anything out ordinary may cause problem during race next strategy pitting locations wind consequence 52 Model Aviation pitting locations should down wind pit locations can numbered 1 2 3 left outside circle Refer Fig 4 usually prefer No 1 position dont have land over anyones lines should pitting same time However position does have disadvantage No 2 No 3 models may have land over lines can cause line snag No 3 position has opposite advantages disadvantages No 2 position has dis advantages should last choice Again depends flying against continued page 98 May1977 53 Opposite page L R Proper pilot positions left pilot pitting other two proper flying positions three circle pro per locationsnote slight body con tact Above R Proper passing technique faster pilot steps back being passed hunches slightly allow quick pass Left pilot illegal flying positionnote relation feet others guilty walking proper circle Left pilot lining up landing Note moves out flying circle Right Right pilot line landing Note position respect other pilots BOX 511E HIGGINSVILLE MISSOURI 64037 agreed again sponsor unofficial Half-A precision aerobatics event 1977 Nationals Junior Senior Open competition will take place using com plete AMA pattern minus appearance points probable date would Satur day August 13 before after Walker Cup Flyoffs Engines limited total 051 maximum no requirement builder model rule however same plane may flown pilot Back-up model may used per AMA rules Airplanes must have iden tifying numbers per AMA rulebook ex cept numbers permissa ble event has developed popular lighthearted unofficial contest last years entry 25 spectator enthusiasm high Its worth watching fun competing event information PAMPA preci sion aerobatics write Wynn Paul 1640 Maywick Dr Lex KY 40504 Race/Kilsdonk continued page 53 next strategy involves pit race flexibility depends fuel capacity Since Rat Race Slow Rat pit required 70-lap races two pits required 140-lap races must capable least 47 laps per tank set models up go about 65-70 laps per tank Goodyear pit required 80-lap race three pits required 160-lapper requires least 40 laps per tank usually have capacity 60-65 laps per tank ideal race would have No 3 team pit first followed No 2 No 1 same lap intervals avoids possibility line snagging usually doesnt work however due differences air speeds Depending differences air speed fastest model will usually pit first followed others proportion relative air speed pilot usually has predetermined signals pit man will signal Like 40 80 120 laps Goodyear 4595 laps Rat pilot can size up strategy during race observing other models discussing other pilots model set up similar have about 20-lap cushion pit can used advantage pit either before after others right pit man has signaled pit pilot has determined best time should initiate shut down tripping shutoff slow MORE wi/A 13orn dIpw same powerYELLOW ~eteeteduePltCYX e~JBddC e\Wet'Tao 354304 Blade63 6-4354 Pusher74 76 78 504 [v32][b-1-10-1-10]]5ZSeach84 86 88654 Z 5~435/4 97118 6364 10-4 106056 8-685411-4 11-611-81 9-6106 1 3 Blade Tractor 55-3 5-4 6-36-4 504 3 Blade Pusher 6-3504 NC 12-4 T2-5 12-6 150 ORISH BROS ST JOHN INDIANA 46373 model down should give several full-up full-down controls use models wing air brake takes lots practice Start slow keep decreasing distance slow model down gradually What try to initiate fuel shut-off about before pit area No 1 pit loca tion can use wind help out No 3 pit position doesnt work well windy days wind will tend accelerate model just before landing pit man must now catch model refuel restart engine release lot time lost can under five seconds dependably 1975 Nationals Goodyear models finals very close air speed Yet able finish ahead several faster models because total pit stop time includes shut-down landing addition pit stop takeoff back air speed An excellent total pit stop includes time lost pit stop should less 15 seconds Have someone time though get one-flip start youll surprised amount lost time Another thing concentrate consistency Remember have make excellent pit stops time just good model now airborne again team must again prepare next pit stop entire sequence including new strategy based changes race must repeated again Actual contest experience much better realistic practice field So feel youre ready go out enter some contests potential hazards unforeseen circumstances contest will probably never encounter However experience experience lots practice will make winner CL Navy Carrier/Perry continued page 31 required release can run through wing throttle arm com mon method use flap movement operate release outboard aileron Fig 3 illustrates method used quite few Carrier medelers A bellcrank can used horns mounted top flap aileron connecting rods will tension can smaller diameter Fig 4 aileron release shown Leon Ryktarsyk As flap falls allows tin-stock plate rotate thus releasing aileron deflected spring rubberband lightest simplest method aileron actuation 98 Model Aviation SERVING THE R/Cer SINCE 1953 Since weve business 24 years can sure stay offer service customers years come youre interested what have offer send $1 complete catalog Add $50 1st Class mail return [AU II Em
Edition: Model Aviation - 1977/05
Page Numbers: 48, 49, 50, 51, 52, 53, 98
John F Kilsdonk THE youd like have go CL racing RACE. MOST HUMANS have basic need compete may happen job neighborhood sports hobbies hobby model airplanes have urge compete enter contests Normally model entered against several other peoples models end meet scores day compared winner decided ultimate competition course head head flying Racing events ob viously fit situation knowledge B Team Racing first official racing event en joyed great popularity mid late 1950s can remember going out Rouge Park Detroit Strathmoor Contests 1956 seeing 50 team racers Grad ually though interest B-TR died Rat Race started gain popularity original Rat Racers nothing Ringmasters green-head K&Bs Foxes evolved present sleek-looking cowled racers fitted high-powered 40s Goodyear also gained popularity through promotions Cal Smith followed Tulsa group given final push full-fledged recog nition consolidated effort several Midwest clubs Editors Note Cali fornians Keith Storey Les McBray er brought prototypes two team racers Nationals Olathe Kan late 40s Storey initial pro moter racing idea control-line also RC Pylon Racing Storeys TR model Key kitted Berkeley published old Air Trails McBrayers model published Mechanix Illustrated Smith Skyraider won first Carrier event ever held wrote fine articles popularized both TR Carrier 1975 saw e Race gain official status 1976 year Slow Rat Race finally made grade Meanwhile FAI TR still popular European countries although its supported small group USA future may bring other new Racing events such Big 40 Goodyear 15 Rat Race etc Some present events may lose popularity always will some forms CL Racing Racing events require just model powerful engine Additionally require team work physical dexterity practice strategy luck feel requirements make racing events unique also put events pinnacle CL events secretly believe challenging of AMA events article intended complement previous constructiofi articles various CL racing models Hopefully will answer some questions new competitors have just finished new model wonder What now first step select team consist ing pit man pilot selec tion team members certain consid erations should made based least prior qualifications member should what Obviously se lected pilot should have some good basic experience flying fact may good combat stunt flier means 48 Model Aviation technique putting finger contacts profile model ammeter attached battery shows condition glow plug picture shows proper finger contact position cowlea rai racer Important team work dexterity practice strategy feel put down inexperience experts briefing will prove invaluable flyit very little actual flying maneuver ing racing planes requires little skill Usually planes quite insensi tive wont maneuver very well way However pilot must have de velop good deal physical dexterity reflexes case Rat Race must have some brute physical strength Additionally taller pilot also ad vantage although absolutely neces sary Left-handed pilots big disad vantage Physical dexterity knowing what feet rest body something must developed Being able run fast important cause dont want run around circle want walk tight circle later General physical con dition quite important fast events such Rat Race Goodyear John Ballard claims runs five miles per day stay shape Personally some jogging mile couple days week addition some tennis although gen eral well-being flying order put team mem bers proper position necessary understand basic field layout racing events Fig 1 Depending facilities available configuration may vary However basic layout should used whenever possible events ex cept events use slightly dif ferent dimensions can consult rule book Area flying zone Pilots should stay area flying landings takeoffs should stay Area B Area C no-no zone Nobody should area during race Area D pitting zone pitting including ini tial starts confined area During landings takeoffs pilot should maintain crouched position Area B avoid snagging head other fliers lines plane being serviced should squat down keep flying handle near ground lines ground OK now youve gotten team together whats next Practice Practice single im portant thing preparation race Both pilot pit man must learn practice individual respon sibilities also must work together team First off must get familiar model practice flying alone Prac tice flying alone until basic systems routines working well get someone else fly Fly ing two other people circle lot different flying alone Although both pilot pit man comprise team both have different distinct re sponsibilities pit man team leader should call shots must very familiar operating char acteristics engine fuel shutoff addition personal equipment battery system fuel refilling device Additionally pit mans responsi bility monitor lap count deter best race strategy pit stops thing isnt obvious though pilot best able determine needle valve settings pilot hears steady drone engine addition May1977 49 Author shown tilling fuel tank prior start race Note fuel bulb right hand battery pack strapped left arm Norris Sparks demonstrates proper technique catching rat racer its oatboard wing Note leather glove used protect hand being better able determine settings through maneuvering airplane pit man has difficulty hearing needle set tings once model launched espe cially two other planes flying same circle pit mans personal equipment includes some sort battery pack strapped body preferably left arm lead wires connected hot glove finger contacts have found finger contacts rings made copper pipe work best avail able hardware stores Select size fits thumb another fits finger length plenty standard pipe doesnt seem right try some copper pipe fittings Bear ing mind pipe fittings round fingers somewhat oval shape can gently squeeze pipe vise flatten out better conform fingers An ammeter series lead wires very handy readily indi cates glow plug condition have found model Rectifier 0-6 AMP meter available HO train dealers works best Refer Fig 2 schematic hook-up Once become familiar enough characteristics glow plug can use ammeter spot trouble zero reading indicates open blown plug full scale reading indi cates short circuit subtle problems can detected such flood ed engine slightly higher amp reading normal partially shorted coil plug slightly lower amp reading normal model should fitted con tacts comfortable pit man Rat Racers prefer plate outboard side cowl contact speed pan inboard side below engine other profile fuselage models such Goodyear Slow Rat models prefer brass contact under upper engine lug bare end glow plug other have seen variations seem work equally well pit man should also equipped fuel bulb syringe plastic bottle 3/16 1/4 filler tube Actually prefer 3/16 size Too large filler tube will fill too fast splash lot fuel out fast-fill thereby giving short fill Too small tube takes too much time fill tank pit man also has field catch model landing Normally wear leather glove right hand both catch model flip prop normally catch Rat Racers out board wing Goodyears Slow Rats prop hub Catching rat prop hub can really hurt Due lighter weight Goodyears Slow Rats fragile nature wings prefer catch prop OK now lets go through start mock race about two minutes fore start pilot should area B hand handle pit man should have model near outer edge area D making sure lines ground Fig 3-A good idea warm up engine prior race also keep warm will make cold start very simi lar pit stops far engine functions starting techniques con cerned like start engine two minute mark run about 15 seconds gives enough time unflood engine necessary also al lows last minute needle valve adjust ment Again about minute mark engine started run about 15 sec onds repeated third time 30 second mark After 15 second run fuel tank should refueled So about 15 seconds now left should again refuel tank also recheck glow plug ammeter Assuming everything order about 3 4 seconds fuel shut-off should opened contacts put glow plug hear go prop flipped model released good idea actually il legal push assist model take off Just before takeoff pilot should tighten up lines apply some whip get model airborne Now model air its pilots turn perform best fastest races involve minimal maneuvering model air Passing should gradual deviate slightly level flight good flying height between 10 15 feet Normal passes should go over 20 feet ground 5 10 feet above other model AMA rules prohibit flagrant whipping Fig 3H defined pilot adding forward force model offense normally given 3-lap penalty However certain times minimal amount whipping necessary no will squawk abused situations occur during takeoffs landings passing order avoid 50 Model Aviation Starting rat racer engine during pit stop Norris Sparks Again note battery ammeter left armlatter easily read position Sparks demonstrating proper technique releasing model Pit man should assist model during its takeoff C D CIRCLE -PHONE V -1/4-2 VOLT BATTERY B LEVEL G FT NGTH EVENT COPPER FINGER RINGS DETAILS GURE NO2 0 -6 AMP AMMETER \ 4 C LEVEL May1977 51 URE TAE OFF POSITIONS E PASSING penalty whipping cases should exceed half lap legal pass should start approaching model about 20 feet behind model being overtaken Fig 3-D point approaching pilot steps behind ahead overtaken pilot raising flying hand over slower pilot faster models lines should now across slower models pilot ahead model behind Fig 3-E faster pilot should immediately pull whip model until faster model about 20 feet ahead slower model Fig 3-F point normal level flight pilot position should resumed technique will minimize chance collision important pilots walk tight circle during race may involve very slight amount actual body contact times between pilots good circle about three feet diameter Fig 3-B C Deviations result unnecessary scrambling actually slows everybody down Some experienced pilots will try walk back circle Fig 3-G shortens effective flying radius subsequently decreases lap time however illegal sure fire fix other pilots tries to walk tighter circle pivot center will quickly discourage additional cheating Another subtle illegal trick pilot walk circle Fig 3-J will just stand center let other pilots run around him Both devious techniques illegal should spotted immediately event director FAI-TR requires pilot keep flying hand chest Although definitely minimizes whipping feel safe AMA style flying Although no rules governing flying hand location per se practical experience dictates position about 6 chest elbow bent down works best However depending pilots strength pull model may vary usually fly Rat Racers both hands except passes Goodyears Slow Rats an easily flown handed model flying portion race turns pure horsepower race fastest model will lead barring disaster pit stops usually tend separate pure go-fasters winners teamwork dependability come play pilot should shut engine off land model roll up pit man short length time possible pit man should catch model refuel start engine release model again minimum amount time Up until now have described fundamentals race Now lets go through simulated race talk about strategies can used things gained through experi ence probably will beneficial newcomers course very necessary practice both alone others become totally familiar model techniques racing However putting together contest another story first strategy occurs determined will flying Size up other teams Usually everybody will practice some before heat races Watch everyone make mental notes habits Some things note air speed shut-off technique pit stop time takeoffs Look anything out ordinary may cause problem during race next strategy pitting locations wind consequence 52 Model Aviation pitting locations should down wind pit locations can numbered 1 2 3 left outside circle Refer Fig 4 usually prefer No 1 position dont have land over anyones lines should pitting same time However position does have disadvantage No 2 No 3 models may have land over lines can cause line snag No 3 position has opposite advantages disadvantages No 2 position has dis advantages should last choice Again depends flying against continued page 98 May1977 53 Opposite page L R Proper pilot positions left pilot pitting other two proper flying positions three circle pro per locationsnote slight body con tact Above R Proper passing technique faster pilot steps back being passed hunches slightly allow quick pass Left pilot illegal flying positionnote relation feet others guilty walking proper circle Left pilot lining up landing Note moves out flying circle Right Right pilot line landing Note position respect other pilots BOX 511E HIGGINSVILLE MISSOURI 64037 agreed again sponsor unofficial Half-A precision aerobatics event 1977 Nationals Junior Senior Open competition will take place using com plete AMA pattern minus appearance points probable date would Satur day August 13 before after Walker Cup Flyoffs Engines limited total 051 maximum no requirement builder model rule however same plane may flown pilot Back-up model may used per AMA rules Airplanes must have iden tifying numbers per AMA rulebook ex cept numbers permissa ble event has developed popular lighthearted unofficial contest last years entry 25 spectator enthusiasm high Its worth watching fun competing event information PAMPA preci sion aerobatics write Wynn Paul 1640 Maywick Dr Lex KY 40504 Race/Kilsdonk continued page 53 next strategy involves pit race flexibility depends fuel capacity Since Rat Race Slow Rat pit required 70-lap races two pits required 140-lap races must capable least 47 laps per tank set models up go about 65-70 laps per tank Goodyear pit required 80-lap race three pits required 160-lapper requires least 40 laps per tank usually have capacity 60-65 laps per tank ideal race would have No 3 team pit first followed No 2 No 1 same lap intervals avoids possibility line snagging usually doesnt work however due differences air speeds Depending differences air speed fastest model will usually pit first followed others proportion relative air speed pilot usually has predetermined signals pit man will signal Like 40 80 120 laps Goodyear 4595 laps Rat pilot can size up strategy during race observing other models discussing other pilots model set up similar have about 20-lap cushion pit can used advantage pit either before after others right pit man has signaled pit pilot has determined best time should initiate shut down tripping shutoff slow MORE wi/A 13orn dIpw same powerYELLOW ~eteeteduePltCYX e~JBddC e\Wet'Tao 354304 Blade63 6-4354 Pusher74 76 78 504 [v32][b-1-10-1-10]]5ZSeach84 86 88654 Z 5~435/4 97118 6364 10-4 106056 8-685411-4 11-611-81 9-6106 1 3 Blade Tractor 55-3 5-4 6-36-4 504 3 Blade Pusher 6-3504 NC 12-4 T2-5 12-6 150 ORISH BROS ST JOHN INDIANA 46373 model down should give several full-up full-down controls use models wing air brake takes lots practice Start slow keep decreasing distance slow model down gradually What try to initiate fuel shut-off about before pit area No 1 pit loca tion can use wind help out No 3 pit position doesnt work well windy days wind will tend accelerate model just before landing pit man must now catch model refuel restart engine release lot time lost can under five seconds dependably 1975 Nationals Goodyear models finals very close air speed Yet able finish ahead several faster models because total pit stop time includes shut-down landing addition pit stop takeoff back air speed An excellent total pit stop includes time lost pit stop should less 15 seconds Have someone time though get one-flip start youll surprised amount lost time Another thing concentrate consistency Remember have make excellent pit stops time just good model now airborne again team must again prepare next pit stop entire sequence including new strategy based changes race must repeated again Actual contest experience much better realistic practice field So feel youre ready go out enter some contests potential hazards unforeseen circumstances contest will probably never encounter However experience experience lots practice will make winner CL Navy Carrier/Perry continued page 31 required release can run through wing throttle arm com mon method use flap movement operate release outboard aileron Fig 3 illustrates method used quite few Carrier medelers A bellcrank can used horns mounted top flap aileron connecting rods will tension can smaller diameter Fig 4 aileron release shown Leon Ryktarsyk As flap falls allows tin-stock plate rotate thus releasing aileron deflected spring rubberband lightest simplest method aileron actuation 98 Model Aviation SERVING THE R/Cer SINCE 1953 Since weve business 24 years can sure stay offer service customers years come youre interested what have offer send $1 complete catalog Add $50 1st Class mail return [AU II Em
Edition: Model Aviation - 1977/05
Page Numbers: 48, 49, 50, 51, 52, 53, 98
John F Kilsdonk THE youd like have go CL racing RACE. MOST HUMANS have basic need compete may happen job neighborhood sports hobbies hobby model airplanes have urge compete enter contests Normally model entered against several other peoples models end meet scores day compared winner decided ultimate competition course head head flying Racing events ob viously fit situation knowledge B Team Racing first official racing event en joyed great popularity mid late 1950s can remember going out Rouge Park Detroit Strathmoor Contests 1956 seeing 50 team racers Grad ually though interest B-TR died Rat Race started gain popularity original Rat Racers nothing Ringmasters green-head K&Bs Foxes evolved present sleek-looking cowled racers fitted high-powered 40s Goodyear also gained popularity through promotions Cal Smith followed Tulsa group given final push full-fledged recog nition consolidated effort several Midwest clubs Editors Note Cali fornians Keith Storey Les McBray er brought prototypes two team racers Nationals Olathe Kan late 40s Storey initial pro moter racing idea control-line also RC Pylon Racing Storeys TR model Key kitted Berkeley published old Air Trails McBrayers model published Mechanix Illustrated Smith Skyraider won first Carrier event ever held wrote fine articles popularized both TR Carrier 1975 saw e Race gain official status 1976 year Slow Rat Race finally made grade Meanwhile FAI TR still popular European countries although its supported small group USA future may bring other new Racing events such Big 40 Goodyear 15 Rat Race etc Some present events may lose popularity always will some forms CL Racing Racing events require just model powerful engine Additionally require team work physical dexterity practice strategy luck feel requirements make racing events unique also put events pinnacle CL events secretly believe challenging of AMA events article intended complement previous constructiofi articles various CL racing models Hopefully will answer some questions new competitors have just finished new model wonder What now first step select team consist ing pit man pilot selec tion team members certain consid erations should made based least prior qualifications member should what Obviously se lected pilot should have some good basic experience flying fact may good combat stunt flier means 48 Model Aviation technique putting finger contacts profile model ammeter attached battery shows condition glow plug picture shows proper finger contact position cowlea rai racer Important team work dexterity practice strategy feel put down inexperience experts briefing will prove invaluable flyit very little actual flying maneuver ing racing planes requires little skill Usually planes quite insensi tive wont maneuver very well way However pilot must have de velop good deal physical dexterity reflexes case Rat Race must have some brute physical strength Additionally taller pilot also ad vantage although absolutely neces sary Left-handed pilots big disad vantage Physical dexterity knowing what feet rest body something must developed Being able run fast important cause dont want run around circle want walk tight circle later General physical con dition quite important fast events such Rat Race Goodyear John Ballard claims runs five miles per day stay shape Personally some jogging mile couple days week addition some tennis although gen eral well-being flying order put team mem bers proper position necessary understand basic field layout racing events Fig 1 Depending facilities available configuration may vary However basic layout should used whenever possible events ex cept events use slightly dif ferent dimensions can consult rule book Area flying zone Pilots should stay area flying landings takeoffs should stay Area B Area C no-no zone Nobody should area during race Area D pitting zone pitting including ini tial starts confined area During landings takeoffs pilot should maintain crouched position Area B avoid snagging head other fliers lines plane being serviced should squat down keep flying handle near ground lines ground OK now youve gotten team together whats next Practice Practice single im portant thing preparation race Both pilot pit man must learn practice individual respon sibilities also must work together team First off must get familiar model practice flying alone Prac tice flying alone until basic systems routines working well get someone else fly Fly ing two other people circle lot different flying alone Although both pilot pit man comprise team both have different distinct re sponsibilities pit man team leader should call shots must very familiar operating char acteristics engine fuel shutoff addition personal equipment battery system fuel refilling device Additionally pit mans responsi bility monitor lap count deter best race strategy pit stops thing isnt obvious though pilot best able determine needle valve settings pilot hears steady drone engine addition May1977 49 Author shown tilling fuel tank prior start race Note fuel bulb right hand battery pack strapped left arm Norris Sparks demonstrates proper technique catching rat racer its oatboard wing Note leather glove used protect hand being better able determine settings through maneuvering airplane pit man has difficulty hearing needle set tings once model launched espe cially two other planes flying same circle pit mans personal equipment includes some sort battery pack strapped body preferably left arm lead wires connected hot glove finger contacts have found finger contacts rings made copper pipe work best avail able hardware stores Select size fits thumb another fits finger length plenty standard pipe doesnt seem right try some copper pipe fittings Bear ing mind pipe fittings round fingers somewhat oval shape can gently squeeze pipe vise flatten out better conform fingers An ammeter series lead wires very handy readily indi cates glow plug condition have found model Rectifier 0-6 AMP meter available HO train dealers works best Refer Fig 2 schematic hook-up Once become familiar enough characteristics glow plug can use ammeter spot trouble zero reading indicates open blown plug full scale reading indi cates short circuit subtle problems can detected such flood ed engine slightly higher amp reading normal partially shorted coil plug slightly lower amp reading normal model should fitted con tacts comfortable pit man Rat Racers prefer plate outboard side cowl contact speed pan inboard side below engine other profile fuselage models such Goodyear Slow Rat models prefer brass contact under upper engine lug bare end glow plug other have seen variations seem work equally well pit man should also equipped fuel bulb syringe plastic bottle 3/16 1/4 filler tube Actually prefer 3/16 size Too large filler tube will fill too fast splash lot fuel out fast-fill thereby giving short fill Too small tube takes too much time fill tank pit man also has field catch model landing Normally wear leather glove right hand both catch model flip prop normally catch Rat Racers out board wing Goodyears Slow Rats prop hub Catching rat prop hub can really hurt Due lighter weight Goodyears Slow Rats fragile nature wings prefer catch prop OK now lets go through start mock race about two minutes fore start pilot should area B hand handle pit man should have model near outer edge area D making sure lines ground Fig 3-A good idea warm up engine prior race also keep warm will make cold start very simi lar pit stops far engine functions starting techniques con cerned like start engine two minute mark run about 15 seconds gives enough time unflood engine necessary also al lows last minute needle valve adjust ment Again about minute mark engine started run about 15 sec onds repeated third time 30 second mark After 15 second run fuel tank should refueled So about 15 seconds now left should again refuel tank also recheck glow plug ammeter Assuming everything order about 3 4 seconds fuel shut-off should opened contacts put glow plug hear go prop flipped model released good idea actually il legal push assist model take off Just before takeoff pilot should tighten up lines apply some whip get model airborne Now model air its pilots turn perform best fastest races involve minimal maneuvering model air Passing should gradual deviate slightly level flight good flying height between 10 15 feet Normal passes should go over 20 feet ground 5 10 feet above other model AMA rules prohibit flagrant whipping Fig 3H defined pilot adding forward force model offense normally given 3-lap penalty However certain times minimal amount whipping necessary no will squawk abused situations occur during takeoffs landings passing order avoid 50 Model Aviation Starting rat racer engine during pit stop Norris Sparks Again note battery ammeter left armlatter easily read position Sparks demonstrating proper technique releasing model Pit man should assist model during its takeoff C D CIRCLE -PHONE V -1/4-2 VOLT BATTERY B LEVEL G FT NGTH EVENT COPPER FINGER RINGS DETAILS GURE NO2 0 -6 AMP AMMETER \ 4 C LEVEL May1977 51 URE TAE OFF POSITIONS E PASSING penalty whipping cases should exceed half lap legal pass should start approaching model about 20 feet behind model being overtaken Fig 3-D point approaching pilot steps behind ahead overtaken pilot raising flying hand over slower pilot faster models lines should now across slower models pilot ahead model behind Fig 3-E faster pilot should immediately pull whip model until faster model about 20 feet ahead slower model Fig 3-F point normal level flight pilot position should resumed technique will minimize chance collision important pilots walk tight circle during race may involve very slight amount actual body contact times between pilots good circle about three feet diameter Fig 3-B C Deviations result unnecessary scrambling actually slows everybody down Some experienced pilots will try walk back circle Fig 3-G shortens effective flying radius subsequently decreases lap time however illegal sure fire fix other pilots tries to walk tighter circle pivot center will quickly discourage additional cheating Another subtle illegal trick pilot walk circle Fig 3-J will just stand center let other pilots run around him Both devious techniques illegal should spotted immediately event director FAI-TR requires pilot keep flying hand chest Although definitely minimizes whipping feel safe AMA style flying Although no rules governing flying hand location per se practical experience dictates position about 6 chest elbow bent down works best However depending pilots strength pull model may vary usually fly Rat Racers both hands except passes Goodyears Slow Rats an easily flown handed model flying portion race turns pure horsepower race fastest model will lead barring disaster pit stops usually tend separate pure go-fasters winners teamwork dependability come play pilot should shut engine off land model roll up pit man short length time possible pit man should catch model refuel start engine release model again minimum amount time Up until now have described fundamentals race Now lets go through simulated race talk about strategies can used things gained through experi ence probably will beneficial newcomers course very necessary practice both alone others become totally familiar model techniques racing However putting together contest another story first strategy occurs determined will flying Size up other teams Usually everybody will practice some before heat races Watch everyone make mental notes habits Some things note air speed shut-off technique pit stop time takeoffs Look anything out ordinary may cause problem during race next strategy pitting locations wind consequence 52 Model Aviation pitting locations should down wind pit locations can numbered 1 2 3 left outside circle Refer Fig 4 usually prefer No 1 position dont have land over anyones lines should pitting same time However position does have disadvantage No 2 No 3 models may have land over lines can cause line snag No 3 position has opposite advantages disadvantages No 2 position has dis advantages should last choice Again depends flying against continued page 98 May1977 53 Opposite page L R Proper pilot positions left pilot pitting other two proper flying positions three circle pro per locationsnote slight body con tact Above R Proper passing technique faster pilot steps back being passed hunches slightly allow quick pass Left pilot illegal flying positionnote relation feet others guilty walking proper circle Left pilot lining up landing Note moves out flying circle Right Right pilot line landing Note position respect other pilots BOX 511E HIGGINSVILLE MISSOURI 64037 agreed again sponsor unofficial Half-A precision aerobatics event 1977 Nationals Junior Senior Open competition will take place using com plete AMA pattern minus appearance points probable date would Satur day August 13 before after Walker Cup Flyoffs Engines limited total 051 maximum no requirement builder model rule however same plane may flown pilot Back-up model may used per AMA rules Airplanes must have iden tifying numbers per AMA rulebook ex cept numbers permissa ble event has developed popular lighthearted unofficial contest last years entry 25 spectator enthusiasm high Its worth watching fun competing event information PAMPA preci sion aerobatics write Wynn Paul 1640 Maywick Dr Lex KY 40504 Race/Kilsdonk continued page 53 next strategy involves pit race flexibility depends fuel capacity Since Rat Race Slow Rat pit required 70-lap races two pits required 140-lap races must capable least 47 laps per tank set models up go about 65-70 laps per tank Goodyear pit required 80-lap race three pits required 160-lapper requires least 40 laps per tank usually have capacity 60-65 laps per tank ideal race would have No 3 team pit first followed No 2 No 1 same lap intervals avoids possibility line snagging usually doesnt work however due differences air speeds Depending differences air speed fastest model will usually pit first followed others proportion relative air speed pilot usually has predetermined signals pit man will signal Like 40 80 120 laps Goodyear 4595 laps Rat pilot can size up strategy during race observing other models discussing other pilots model set up similar have about 20-lap cushion pit can used advantage pit either before after others right pit man has signaled pit pilot has determined best time should initiate shut down tripping shutoff slow MORE wi/A 13orn dIpw same powerYELLOW ~eteeteduePltCYX e~JBddC e\Wet'Tao 354304 Blade63 6-4354 Pusher74 76 78 504 [v32][b-1-10-1-10]]5ZSeach84 86 88654 Z 5~435/4 97118 6364 10-4 106056 8-685411-4 11-611-81 9-6106 1 3 Blade Tractor 55-3 5-4 6-36-4 504 3 Blade Pusher 6-3504 NC 12-4 T2-5 12-6 150 ORISH BROS ST JOHN INDIANA 46373 model down should give several full-up full-down controls use models wing air brake takes lots practice Start slow keep decreasing distance slow model down gradually What try to initiate fuel shut-off about before pit area No 1 pit loca tion can use wind help out No 3 pit position doesnt work well windy days wind will tend accelerate model just before landing pit man must now catch model refuel restart engine release lot time lost can under five seconds dependably 1975 Nationals Goodyear models finals very close air speed Yet able finish ahead several faster models because total pit stop time includes shut-down landing addition pit stop takeoff back air speed An excellent total pit stop includes time lost pit stop should less 15 seconds Have someone time though get one-flip start youll surprised amount lost time Another thing concentrate consistency Remember have make excellent pit stops time just good model now airborne again team must again prepare next pit stop entire sequence including new strategy based changes race must repeated again Actual contest experience much better realistic practice field So feel youre ready go out enter some contests potential hazards unforeseen circumstances contest will probably never encounter However experience experience lots practice will make winner CL Navy Carrier/Perry continued page 31 required release can run through wing throttle arm com mon method use flap movement operate release outboard aileron Fig 3 illustrates method used quite few Carrier medelers A bellcrank can used horns mounted top flap aileron connecting rods will tension can smaller diameter Fig 4 aileron release shown Leon Ryktarsyk As flap falls allows tin-stock plate rotate thus releasing aileron deflected spring rubberband lightest simplest method aileron actuation 98 Model Aviation SERVING THE R/Cer SINCE 1953 Since weve business 24 years can sure stay offer service customers years come youre interested what have offer send $1 complete catalog Add $50 1st Class mail return [AU II Em
Edition: Model Aviation - 1977/05
Page Numbers: 48, 49, 50, 51, 52, 53, 98
John F Kilsdonk THE youd like have go CL racing RACE. MOST HUMANS have basic need compete may happen job neighborhood sports hobbies hobby model airplanes have urge compete enter contests Normally model entered against several other peoples models end meet scores day compared winner decided ultimate competition course head head flying Racing events ob viously fit situation knowledge B Team Racing first official racing event en joyed great popularity mid late 1950s can remember going out Rouge Park Detroit Strathmoor Contests 1956 seeing 50 team racers Grad ually though interest B-TR died Rat Race started gain popularity original Rat Racers nothing Ringmasters green-head K&Bs Foxes evolved present sleek-looking cowled racers fitted high-powered 40s Goodyear also gained popularity through promotions Cal Smith followed Tulsa group given final push full-fledged recog nition consolidated effort several Midwest clubs Editors Note Cali fornians Keith Storey Les McBray er brought prototypes two team racers Nationals Olathe Kan late 40s Storey initial pro moter racing idea control-line also RC Pylon Racing Storeys TR model Key kitted Berkeley published old Air Trails McBrayers model published Mechanix Illustrated Smith Skyraider won first Carrier event ever held wrote fine articles popularized both TR Carrier 1975 saw e Race gain official status 1976 year Slow Rat Race finally made grade Meanwhile FAI TR still popular European countries although its supported small group USA future may bring other new Racing events such Big 40 Goodyear 15 Rat Race etc Some present events may lose popularity always will some forms CL Racing Racing events require just model powerful engine Additionally require team work physical dexterity practice strategy luck feel requirements make racing events unique also put events pinnacle CL events secretly believe challenging of AMA events article intended complement previous constructiofi articles various CL racing models Hopefully will answer some questions new competitors have just finished new model wonder What now first step select team consist ing pit man pilot selec tion team members certain consid erations should made based least prior qualifications member should what Obviously se lected pilot should have some good basic experience flying fact may good combat stunt flier means 48 Model Aviation technique putting finger contacts profile model ammeter attached battery shows condition glow plug picture shows proper finger contact position cowlea rai racer Important team work dexterity practice strategy feel put down inexperience experts briefing will prove invaluable flyit very little actual flying maneuver ing racing planes requires little skill Usually planes quite insensi tive wont maneuver very well way However pilot must have de velop good deal physical dexterity reflexes case Rat Race must have some brute physical strength Additionally taller pilot also ad vantage although absolutely neces sary Left-handed pilots big disad vantage Physical dexterity knowing what feet rest body something must developed Being able run fast important cause dont want run around circle want walk tight circle later General physical con dition quite important fast events such Rat Race Goodyear John Ballard claims runs five miles per day stay shape Personally some jogging mile couple days week addition some tennis although gen eral well-being flying order put team mem bers proper position necessary understand basic field layout racing events Fig 1 Depending facilities available configuration may vary However basic layout should used whenever possible events ex cept events use slightly dif ferent dimensions can consult rule book Area flying zone Pilots should stay area flying landings takeoffs should stay Area B Area C no-no zone Nobody should area during race Area D pitting zone pitting including ini tial starts confined area During landings takeoffs pilot should maintain crouched position Area B avoid snagging head other fliers lines plane being serviced should squat down keep flying handle near ground lines ground OK now youve gotten team together whats next Practice Practice single im portant thing preparation race Both pilot pit man must learn practice individual respon sibilities also must work together team First off must get familiar model practice flying alone Prac tice flying alone until basic systems routines working well get someone else fly Fly ing two other people circle lot different flying alone Although both pilot pit man comprise team both have different distinct re sponsibilities pit man team leader should call shots must very familiar operating char acteristics engine fuel shutoff addition personal equipment battery system fuel refilling device Additionally pit mans responsi bility monitor lap count deter best race strategy pit stops thing isnt obvious though pilot best able determine needle valve settings pilot hears steady drone engine addition May1977 49 Author shown tilling fuel tank prior start race Note fuel bulb right hand battery pack strapped left arm Norris Sparks demonstrates proper technique catching rat racer its oatboard wing Note leather glove used protect hand being better able determine settings through maneuvering airplane pit man has difficulty hearing needle set tings once model launched espe cially two other planes flying same circle pit mans personal equipment includes some sort battery pack strapped body preferably left arm lead wires connected hot glove finger contacts have found finger contacts rings made copper pipe work best avail able hardware stores Select size fits thumb another fits finger length plenty standard pipe doesnt seem right try some copper pipe fittings Bear ing mind pipe fittings round fingers somewhat oval shape can gently squeeze pipe vise flatten out better conform fingers An ammeter series lead wires very handy readily indi cates glow plug condition have found model Rectifier 0-6 AMP meter available HO train dealers works best Refer Fig 2 schematic hook-up Once become familiar enough characteristics glow plug can use ammeter spot trouble zero reading indicates open blown plug full scale reading indi cates short circuit subtle problems can detected such flood ed engine slightly higher amp reading normal partially shorted coil plug slightly lower amp reading normal model should fitted con tacts comfortable pit man Rat Racers prefer plate outboard side cowl contact speed pan inboard side below engine other profile fuselage models such Goodyear Slow Rat models prefer brass contact under upper engine lug bare end glow plug other have seen variations seem work equally well pit man should also equipped fuel bulb syringe plastic bottle 3/16 1/4 filler tube Actually prefer 3/16 size Too large filler tube will fill too fast splash lot fuel out fast-fill thereby giving short fill Too small tube takes too much time fill tank pit man also has field catch model landing Normally wear leather glove right hand both catch model flip prop normally catch Rat Racers out board wing Goodyears Slow Rats prop hub Catching rat prop hub can really hurt Due lighter weight Goodyears Slow Rats fragile nature wings prefer catch prop OK now lets go through start mock race about two minutes fore start pilot should area B hand handle pit man should have model near outer edge area D making sure lines ground Fig 3-A good idea warm up engine prior race also keep warm will make cold start very simi lar pit stops far engine functions starting techniques con cerned like start engine two minute mark run about 15 seconds gives enough time unflood engine necessary also al lows last minute needle valve adjust ment Again about minute mark engine started run about 15 sec onds repeated third time 30 second mark After 15 second run fuel tank should refueled So about 15 seconds now left should again refuel tank also recheck glow plug ammeter Assuming everything order about 3 4 seconds fuel shut-off should opened contacts put glow plug hear go prop flipped model released good idea actually il legal push assist model take off Just before takeoff pilot should tighten up lines apply some whip get model airborne Now model air its pilots turn perform best fastest races involve minimal maneuvering model air Passing should gradual deviate slightly level flight good flying height between 10 15 feet Normal passes should go over 20 feet ground 5 10 feet above other model AMA rules prohibit flagrant whipping Fig 3H defined pilot adding forward force model offense normally given 3-lap penalty However certain times minimal amount whipping necessary no will squawk abused situations occur during takeoffs landings passing order avoid 50 Model Aviation Starting rat racer engine during pit stop Norris Sparks Again note battery ammeter left armlatter easily read position Sparks demonstrating proper technique releasing model Pit man should assist model during its takeoff C D CIRCLE -PHONE V -1/4-2 VOLT BATTERY B LEVEL G FT NGTH EVENT COPPER FINGER RINGS DETAILS GURE NO2 0 -6 AMP AMMETER \ 4 C LEVEL May1977 51 URE TAE OFF POSITIONS E PASSING penalty whipping cases should exceed half lap legal pass should start approaching model about 20 feet behind model being overtaken Fig 3-D point approaching pilot steps behind ahead overtaken pilot raising flying hand over slower pilot faster models lines should now across slower models pilot ahead model behind Fig 3-E faster pilot should immediately pull whip model until faster model about 20 feet ahead slower model Fig 3-F point normal level flight pilot position should resumed technique will minimize chance collision important pilots walk tight circle during race may involve very slight amount actual body contact times between pilots good circle about three feet diameter Fig 3-B C Deviations result unnecessary scrambling actually slows everybody down Some experienced pilots will try walk back circle Fig 3-G shortens effective flying radius subsequently decreases lap time however illegal sure fire fix other pilots tries to walk tighter circle pivot center will quickly discourage additional cheating Another subtle illegal trick pilot walk circle Fig 3-J will just stand center let other pilots run around him Both devious techniques illegal should spotted immediately event director FAI-TR requires pilot keep flying hand chest Although definitely minimizes whipping feel safe AMA style flying Although no rules governing flying hand location per se practical experience dictates position about 6 chest elbow bent down works best However depending pilots strength pull model may vary usually fly Rat Racers both hands except passes Goodyears Slow Rats an easily flown handed model flying portion race turns pure horsepower race fastest model will lead barring disaster pit stops usually tend separate pure go-fasters winners teamwork dependability come play pilot should shut engine off land model roll up pit man short length time possible pit man should catch model refuel start engine release model again minimum amount time Up until now have described fundamentals race Now lets go through simulated race talk about strategies can used things gained through experi ence probably will beneficial newcomers course very necessary practice both alone others become totally familiar model techniques racing However putting together contest another story first strategy occurs determined will flying Size up other teams Usually everybody will practice some before heat races Watch everyone make mental notes habits Some things note air speed shut-off technique pit stop time takeoffs Look anything out ordinary may cause problem during race next strategy pitting locations wind consequence 52 Model Aviation pitting locations should down wind pit locations can numbered 1 2 3 left outside circle Refer Fig 4 usually prefer No 1 position dont have land over anyones lines should pitting same time However position does have disadvantage No 2 No 3 models may have land over lines can cause line snag No 3 position has opposite advantages disadvantages No 2 position has dis advantages should last choice Again depends flying against continued page 98 May1977 53 Opposite page L R Proper pilot positions left pilot pitting other two proper flying positions three circle pro per locationsnote slight body con tact Above R Proper passing technique faster pilot steps back being passed hunches slightly allow quick pass Left pilot illegal flying positionnote relation feet others guilty walking proper circle Left pilot lining up landing Note moves out flying circle Right Right pilot line landing Note position respect other pilots BOX 511E HIGGINSVILLE MISSOURI 64037 agreed again sponsor unofficial Half-A precision aerobatics event 1977 Nationals Junior Senior Open competition will take place using com plete AMA pattern minus appearance points probable date would Satur day August 13 before after Walker Cup Flyoffs Engines limited total 051 maximum no requirement builder model rule however same plane may flown pilot Back-up model may used per AMA rules Airplanes must have iden tifying numbers per AMA rulebook ex cept numbers permissa ble event has developed popular lighthearted unofficial contest last years entry 25 spectator enthusiasm high Its worth watching fun competing event information PAMPA preci sion aerobatics write Wynn Paul 1640 Maywick Dr Lex KY 40504 Race/Kilsdonk continued page 53 next strategy involves pit race flexibility depends fuel capacity Since Rat Race Slow Rat pit required 70-lap races two pits required 140-lap races must capable least 47 laps per tank set models up go about 65-70 laps per tank Goodyear pit required 80-lap race three pits required 160-lapper requires least 40 laps per tank usually have capacity 60-65 laps per tank ideal race would have No 3 team pit first followed No 2 No 1 same lap intervals avoids possibility line snagging usually doesnt work however due differences air speeds Depending differences air speed fastest model will usually pit first followed others proportion relative air speed pilot usually has predetermined signals pit man will signal Like 40 80 120 laps Goodyear 4595 laps Rat pilot can size up strategy during race observing other models discussing other pilots model set up similar have about 20-lap cushion pit can used advantage pit either before after others right pit man has signaled pit pilot has determined best time should initiate shut down tripping shutoff slow MORE wi/A 13orn dIpw same powerYELLOW ~eteeteduePltCYX e~JBddC e\Wet'Tao 354304 Blade63 6-4354 Pusher74 76 78 504 [v32][b-1-10-1-10]]5ZSeach84 86 88654 Z 5~435/4 97118 6364 10-4 106056 8-685411-4 11-611-81 9-6106 1 3 Blade Tractor 55-3 5-4 6-36-4 504 3 Blade Pusher 6-3504 NC 12-4 T2-5 12-6 150 ORISH BROS ST JOHN INDIANA 46373 model down should give several full-up full-down controls use models wing air brake takes lots practice Start slow keep decreasing distance slow model down gradually What try to initiate fuel shut-off about before pit area No 1 pit loca tion can use wind help out No 3 pit position doesnt work well windy days wind will tend accelerate model just before landing pit man must now catch model refuel restart engine release lot time lost can under five seconds dependably 1975 Nationals Goodyear models finals very close air speed Yet able finish ahead several faster models because total pit stop time includes shut-down landing addition pit stop takeoff back air speed An excellent total pit stop includes time lost pit stop should less 15 seconds Have someone time though get one-flip start youll surprised amount lost time Another thing concentrate consistency Remember have make excellent pit stops time just good model now airborne again team must again prepare next pit stop entire sequence including new strategy based changes race must repeated again Actual contest experience much better realistic practice field So feel youre ready go out enter some contests potential hazards unforeseen circumstances contest will probably never encounter However experience experience lots practice will make winner CL Navy Carrier/Perry continued page 31 required release can run through wing throttle arm com mon method use flap movement operate release outboard aileron Fig 3 illustrates method used quite few Carrier medelers A bellcrank can used horns mounted top flap aileron connecting rods will tension can smaller diameter Fig 4 aileron release shown Leon Ryktarsyk As flap falls allows tin-stock plate rotate thus releasing aileron deflected spring rubberband lightest simplest method aileron actuation 98 Model Aviation SERVING THE R/Cer SINCE 1953 Since weve business 24 years can sure stay offer service customers years come youre interested what have offer send $1 complete catalog Add $50 1st Class mail return [AU II Em
