Radio Control OlctTirners Dee Mathews AS MANY aware several sys tems have developed replace raditional make-and-break points used spark-ignition model engines published far complex requiring electronic skills beyond us --F-I IRWIN OHLSSONS PACEMAKER SPAN 68 /2 CHORD 0 GOLD SEAL 60 SAM RULES MAX GLOW 3Ocuin 0 I 2 3 4 5 6 7 5 9 10 months have following closely development pre-built com mercially available system hoping would become available Well friends now can announced quote letter received Otto Bernhardts 77 Products transistorized ignition system al lows fly RC model ig nition engine eliminates elec trical noises generated ignition sys tem radio gear affected electrical noise unshielded igni tion system such used free flight can make radio go crazy unit intended RC modeler would like operate model aircraft 0 engine gasoline oil instead glow fuel take advantage economy reduced fuel costs associated ignition transistorized ignition system complete ready install includes ignition coil assembly switch assem bly shielded high-tension lead battery pack charger special thin wall T-handle socket wrench battery charger will furnished match battery size preference Other details 250-mah pack will give 20- 25-minute motor run l2-ah pack will run engine long 1 2 hours Sizes l/ dia X 2Ys long coil 1 3/16 X 1 1/16 switch-charger jack assembly 11/16 26 Model Aviation both feet off ground Paul King Sets free Miss America Bert Stiegler snapped gaggle famous oldies Ito R Powerhouse three Playboy Seniors Comet Sailplane Buzzard Bombshell Like hawks summers day picture riding air currents simultaneously oldtimersnotably pylon jobsonce thought hopeless RC subjects Owen Morris pic Climbing Out JSC/RCC R/C Oldtimer contest Houston Bob Elliotts EK Productal Taibi Powerhouse urged along its muffled ST 35 engine Its 114 license AMA Life member number 14 Bob has beenflying radiofrom its beginning Photograph Owen Morris A 250-mab battery pack Weights 9 oz total 250-mah set up 12 oz 12 ah Price writing $8500 plus $625 optional charger further details delivery date contact 77 Products 17119 So Harvard Blvd Gardena CA 90247 Otto recently underwent open-heart surgery anticipate delay delivery 6 8 weeks Presuming quality workmanship evidenced Ottos OS Max ignition coversions will also pres ent new TLS can hardly wait get others developing commercial TIS unit please advise us might share information readers unbelievable prices glow fuel future may well see more gasoline oil used phases mod eling Since gasoline contains much energy per ounce methanol some extra weight TIS can made up using smaller tank Coyle What Zone 12th Annual SAM Champs will held July 25-27 National Guard Coyle Drop Zone New Jersey Coyle approximately 4 miles northwest intersection routes 539 72 20 miles southwest Lake hurst NAS site reported abandoned WW II fighter field gravel runways ample open area easy retrieval via motorbike Contest manager Woody Woodman 389 Floral Lane Saddle Brook NJ 07662 R/C director Tom Knakal 7 Seneca Ave Lake Hiawatha NJ 07034 Coyle 45 minutes Atlantic City its famous boardwalk bring family Combine vacation SAM Champs Old Timer ROW quote Ted Kafer SAM 21 newsletter After eight days steady rain northern California advent old-timer seaplane meet fun fly may become reality John Pond also makes tongue cheek sug gestion such event Model Builder column Well gentlemen R Kreunzinger Salem would like enter added pair 33 Gee Bee floats 40 engine 2-year-old Kloud King MA plan #103 finds excellent seaplane says light wing loading dihedral bother rough water takeoffs under calm conditions nice gentle performer off water Now application didnt have mind drew up sure sounds like fun brings up intriguing question ROW event prior 1942 cannot find evidence ROW events pre-war Nationals ever run local contests Some real oldtimers speak up Id welcome correspondence subject would ecstatic over photos share everyone EditorWe remember late Continued page 88 Helmer Johnsons Playboy Senior doing what comes naturally know Fort Worth Thunderbird See decal Poetic pose caught Owen Morris same Houston contest Docs own Kloud King plan No 103 probably popular non-kit th land 200-mm telephoto Dave Marsh caught RA Kreuzingers OS 4ORC version just leaviig water requires 40-ft run its 33 Gee Bee floats Mr K has enjoyed bird two years WORLD S LARGEST MASTER MODELS ASS T GIANTS OF flOUT 5-10 FT SPANS Catalog Subscription SI Br $110 ley Check Same Thee n Plan Too went end need yocr neppoct O en) whot new nwvbovs oth sinc weve becene o ocliente 4eeiuu service orgoujeettee deolon ceppovt ~ecO5 98 Lcd Hcdoe Rueck $49 4DuuIittlucGee B.545-77 Flying Feet 8- 70 $30 58 Sepeeeo6eeSdo$20103 FyngFoctR- 7G $49 62 Hwveet Ike Roe82345 66 teococd R-26 $39 78 Plc We8deII-Weo$3949 mock Widcw P81 $26 66 0 H Conet EecSitpo Clock Wduc P81 $69 62 26 Molligon$66 Jenknrv JUtO Olt 74 Poecc Openiel$395$ H-P 0400 Ho 4 P0830 81 Mesqcitn Oqn 633$34100 H P 0400 PG 042 55 Hooth Roby Rclet522-81 Fekket 0-8 Pu 930 58 ltocckr M-5 leo Pu$1478 Sopoc tie Pop Pu $25 70 Boyle 000-Ie83945 B-W 8td-Opv $29 62 Cuttiw Hawk P6-E$39107 Mortlt MR-I Conk 66 Curt Slvthe A-S$3266 Ceeclrut 0-Ill Ole $10. 60 Dougloc 0-39 Ole$1561 AEG 09 $otekv $18 71 MevOt C-tO Rosek53058 Soleowe 3A2 $15 62 Skyvoukof XP5P$1682 0nnov-Och DIV $30 57 CetOLceSO3C-t$151160o6eo 89 Rveeker 049 IlOOPtANS LABLE vided eliminate high speed flier desires Bill further claims Hi Flight 12 consists rugged-welded steel frame completely rebuilt 12-volt motor finely machined steel drum two inch core electrics necessary its operation Included Hi Flight 12 ballbearing turn-around price en tire Hi Flight 12 launch system $17900 FOB Hemet California winch also available kit form $8900 get welded frame drilled Complete instructions showing assembly wiring included Re built long-shaft starters also available $2250 winch drums $2495 Write Hi Flight Model Products 43225 Whittier Ave Hemet CA 92434Phone 714 927-4666 Milwaukee Minneapolis Winston-Salem Three areas soaring growing reported first Ron Kopp Mil waukee Suds City Sailplane Team amicable split power club doing own youre area contact Ron Kopp 8010 WWaterford Ave Milwaukee WI 53220 Minneapolis comes news Minnesota Soaring Team well underway Unfortunately no address provided H Evanston says club has three winches sod farm about ten miles south Minneapolis Activities designed around family cant find sod farm look up Evan stons claim hour 30-minute flights Sailaire should draw attention Charles Spear secretary Triad Thermal Thumbers comes announcement forming club Winston Salem Greensboro High Point area North Carolina charter less year theyve already scheduled FAI quarter-finals hoping warrant LSF regional Contact Charles Spear 800 Holly Lane Mocksville NC 27028 Great Race III announced Ken Ward president SOAR heralded event first started 1976 has become annual classic will run conjuction Stand-off Scale contest race open AMA chartered club scheduled August 12 Stand-off Scale contest will beheld August 13 open AMA member details contact Bill Christian CD 1604 N Chestnut Arlington Hts IL 60004 League Silent flight Gordon Pearson LSF President comes news should interest sailplane flier world LSF National Tournament should say International Tourna ment will again held year traditional last weekend Augustthe 26th 27th Already least ten sites have chosen regionals plans underway additional tournaments foreign chapters exist will two-year program whereby percentage top scorers regions will eligible compete interna tional fly-off determine LSF Champion fly-off would scheduled 1979 Discussions underway extra-spe cial eventsthis 1979 contest whereby LSF member could fly potential event could greatest get-together soaring event-ever Details finalized will announced sent LSF members Dan Pruss Rt 2 Box 490 Plainfield IL 60544 RC Old Timer/Mathews continued page 27 thirties ROW free flight event Lake Hopatcong NJ published Air Trials flying old-timer models off water certainly has appeal us have access ponds lakes sure have lakes Kansas delightful way com bine picnic family outing favorite recreation Say again SAM still appears New Goldberg Retracts feature Coil main gear instead three Field re ports experts using Goldberg gear found Coil adequate increased firmness gear especially down-wind turns ground giving better takeoff landing control Carl Goldberg Models Inc 4735W Chicago Ave Chicago IL 60651 product review product review product review some confusion over legality glow engines RC Old-Timer events Glow engines completely legal SAM Radio-Assist events According latest ballot SAM member ship use glow engines free flight oldtimers prohibited changes sub mitted section III rejected membership quickly review vote noneSAM reader changes rules governing free flight events removal responsibility authentication design builder allowing two models per event Radio Control As sist changes 8 oz per sq ft whether ignition glow powered glow con verted-to-ignition engines require 225 sq wing area 10 cu dis placement outlawing pressure fuel systems rear-rotor engines tuned pipes Flight Rule changes Radio Assist Maximum time flights will five minutes overtime deducted En gine runs changed 20 seconds glow 40 seconds ignition Six attempts three officials attempt being flight under 40 seconds Timer will stop calling time 10 seconds prior max other rules remain printed Society Antique Modelers official rule book 1978 AMA 78-79 rule book rules now finalized can learn live regardless personal preferences would appear few RC Assist models devel oped over last few seasons built winter will require major modifi cations remain SAM legal Several performance gaps between sparkers glows have closed Hopefully new contest season will see ever increasing numbers entrants enjoying delightful aspect hobby-sport Ohlssons California Champion Pace maker Ohlsson name familiar anyone ever remote terest powered model aircraft Irwin partner Harry Rice produced tens thousands engines 1937 1955 era What may well known Irwin started business model kit California Record Holder first advertised MAN July 1936 featured Brown Jr drawings Ohlsson decided enter engine manufacturing business developing prototype engine felt need testing flight conditions Pace maker test bed new Min iature engine Feb 1937 issue MAN contains photo combina tion clearly illustrating radical departure then-standard beam engine mounts Pacemaker first model ever utilize radial motor mount Pacemaker kit immensely suc cessful California unique motor 88 Model Aviation product review product review product review KGL IAT L4 fu0aicc4 7th Annual / Pre-Season Radio System Check-up pcs Valid until May 15 1978 FULL TIME TECHNICIANS FACTORY TRAINED ST TEST EQUIPMENT NEW MODERN SHOP ONLY GENUINE FACTORY PARTS SFACTION GUARANTEED RE-SEASON SPECIAL ONLY $2495 pius postuqe Less AMA Coupon Repair Net Cost Perform Transmitter Battery Load Check Perform Transmitter Crystal Frequency Count Perform Receiver Battery Load Check Check Battery Charging Circuit Tune Transmitter R F Check Receiver Sensitivity & Adjust Align Receiver RF lF Stages Check Receiver Logic Align Transmitter Encoder Check Servo Stalled Motor Current Repair parts additional Check Servo Mechanics Adjust Servo Centering Perform System Servo Noise Check Shock Test Complete Airborne System Range Check System System Flight Test Necessary ~ae Kraft Great Lakes Inc 6787 Wales Ave PO Box 2182 North CantonOhio 11720 eii Mark Porter Dave Male 216 199-8310 og fte4o4ta/ dewcce BankAmericard Master Charge Welcome mount attractive cabin design lent itself variety cowl paint con figurations Ohisson won California State Fair Contest Sept 1937 large margin legend began Expressly developed new 30second-motor-run rules Pacemaker received maximum points judged engineering design Minia ture engine entered aeronaut ical display same fair received gold seal award hence name famous engine became Gold Seal Pacemaker construction con ventional exception dural wire wing tips empennage outlines would strongly recommend laminated basswood sheet outlines Spruce fuse lage members wing spars would excellent substitution changes Pacemaker would splendid choice seaplane events could delight ful sport model Under SAM rules maximum engine size would 40 cc 25 cu Time Target Events Trend Time-target precision events can great fun fine equalizers beginners experts Such events popularized West Coast prior WW II often including beauty craftsmanship points formula find amusing note back thermal events much popular East Coast mid-West events suitable small fields popular West Coast observes West Coast origin such popular thermal designs Pacemaker Mystery Man Winged Vict ory Westerner Dennyplane similar beauties Time-target appearance events also very popular England prior WWII witness Bowden Perpetual Trophy England also produced some designs strong esthetic appeal during era two outstanding examples being Vul can D H Russel Barnards Premier Lion Incidentally has picture either Id like use Old-Timer-of-the-Month subjects time-target events rapidly gaining popularity around country prominent factor desire somehow equalize disparities performance between ordinary popular pro totypes such Clippers Playboys equally appealing designs lack floating ability mentioned last column rules IS-minute precis sion used Houston group Other approaches considerable appeal Chicken Add em Up Chicken events employ 30-second motor run watch starting flier hands transmitter timer stopping takes grabs thing back Ten-minute maxs bonus points landing inside circle no time recorded off-field landings event can close much performance gap previously mentioned superior wind penetration flat-bottomed Clark Y airfoils offsetting floating ability traditional contest machines Add em Up has its objective 15-minute three-flight total flight time reduced second second single flight over 7 minutes Bonus points usually awarded landing inside designated circle again float ers no particular advantage unless contestant chooses spin out boomer crash inside circle Clarence Haught has mentioned col umn growing concern over nearly total domination Antique classes Clipper Mkll us have dis taste one-design trend Playboys producing Old Timer events need examine results nearly contest see trend early days SAM movement saw entries composed numerous diverse teresting designs much en joyed walking around playing what game no longer case current situation almost forces interested winning choose narrow band wide spectrum avail able choices Hopefully more SAM chapters will innovate events bring back some diversity design intro duce stronger element luck fun June1978 89 KRAFT S2495 500 $1995 Lets face folks AMA free flight RC glider events can provide fero cious competition anyone wants SAM events chance relaxation good fellowship importantly fun Painless Servo Mounts continuously perplexing problem converting Old Timer models radio has mounting servos fuselage frame sides Invariably end up using heavy maple motor-mount stock epoxied place sides cross members hold down servo tray Hardly neat light-weight method have recently used Ser-kit Buckeye Balsa 3330 Youngstown-Kingsville Road Cortland Oh 44410 find ideal oldtimer use consists two groved hard wood blocks 16 o tight-fitting rails slid adjusted fore aft optimum servo loca tion glued slots retained scraps left over cutting rails simple solution com plex problem Buckeye Balsa also has inventory sheet balsa balsa spruce strip 54 60 66 72 lengths Wood long lengths often needed construction really huge old timers avoid splicing Dee B Mathews 506 South Walnut Greensburg KS 67054 RC Pylon/Lane continued page 29 come event Nationals C B Enterprises has some success 800 sq Cosmic Wind design Scale Squadron Orange Coun ty California beginning get some interest going scale AT-6 Texan class AT-6 800 sq class thereabouts hope guys have ap parently upset February March articles will understand now am trying downgrade QM Formula look around people have dropped out QM Formula primary reasons planes going too fast cost too much know thats what racing about think its too bad events end up pros reaping benefits seems should room anyone wants compete QM Formula coming dead last time Hopefully have made model ers irate article think have aware average modelers would like compete other one-class racing limited design aircraft Hey guys Chicago area Mr Justice 1816 N Mozart Chicago IL would like get pylon racing wife Debra wishes caller wants know about duties caller about contacting Justices give some pointers racing am sure would appreciate have copy MNPRA manual published several years ago Debra would like read winner Reno Air Races last year entry American Air Rac ing Teams Top Turkey Figure three view what looked like ship modified Shoestring design Next month will have 3-view Team Tur keys new ship called Wild Turkey Dave Lane 447 W 136th St Haw thorne CA 90250 Make Props/de Bolt continued page 33 speak force applied pro peller As propeller works creates thrust force transmitted aircraft through blade material via engine shaft thrust would also have center line force Thrust result combi nation lift developed airfoil upper curve fan effect off bottom blade would line resultant between So resultant line thrust could parallel mechanical line thrust tip hub Ideally two lines thrust would same loca tion chord-wise torsional rotational force set up would tend rotate blade about mechanical line force can make variations stan dard design top view blade can approach ideal position lines force diagram No 3 show thrust line force can product review product review product review Pactra Aero-Poxy Pactra offers new line specially formulated 2-component system finishes Aero-Poxy tough fuel-proof marresistant one-coat armour finish designed endure rough handling fuel spillage unique formulation utilizes non-irritating non-sensitizing curing agent elimi nates dermatitic respiratory problems Aero-Poxy free lead hazards nontoxic dry Available colors gloss clear primer 8 oz onlyl choice Super Hi-Gloss Catalyst Flat Catalyst versatility finish color-mixing capabili ties Suitable brush spray Available 4- 8-oz cans plus thinners brushing spray 16- 32-oz cans Pactra Indus tries 7060 Hollywood Blvd Los Angeles CA 90028 product review product review product review 90 Model Aviation Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground GREATEST B/C BASIC TRAINEB Design & Kit ALL TIME Ask over 25000 satisfied builders H-BAY dealers sold themSHALL WE SAY MORE Andrews Aircraft Model Co Inc US Rte 1& North Sc Topsfield Mass 01983 887-8541 Price $3995 kit pee dollar- bar em all
Edition: Model Aviation - 1978/06
Page Numbers: 26, 27, 88, 89, 90
Radio Control OlctTirners Dee Mathews AS MANY aware several sys tems have developed replace raditional make-and-break points used spark-ignition model engines published far complex requiring electronic skills beyond us --F-I IRWIN OHLSSONS PACEMAKER SPAN 68 /2 CHORD 0 GOLD SEAL 60 SAM RULES MAX GLOW 3Ocuin 0 I 2 3 4 5 6 7 5 9 10 months have following closely development pre-built com mercially available system hoping would become available Well friends now can announced quote letter received Otto Bernhardts 77 Products transistorized ignition system al lows fly RC model ig nition engine eliminates elec trical noises generated ignition sys tem radio gear affected electrical noise unshielded igni tion system such used free flight can make radio go crazy unit intended RC modeler would like operate model aircraft 0 engine gasoline oil instead glow fuel take advantage economy reduced fuel costs associated ignition transistorized ignition system complete ready install includes ignition coil assembly switch assem bly shielded high-tension lead battery pack charger special thin wall T-handle socket wrench battery charger will furnished match battery size preference Other details 250-mah pack will give 20- 25-minute motor run l2-ah pack will run engine long 1 2 hours Sizes l/ dia X 2Ys long coil 1 3/16 X 1 1/16 switch-charger jack assembly 11/16 26 Model Aviation both feet off ground Paul King Sets free Miss America Bert Stiegler snapped gaggle famous oldies Ito R Powerhouse three Playboy Seniors Comet Sailplane Buzzard Bombshell Like hawks summers day picture riding air currents simultaneously oldtimersnotably pylon jobsonce thought hopeless RC subjects Owen Morris pic Climbing Out JSC/RCC R/C Oldtimer contest Houston Bob Elliotts EK Productal Taibi Powerhouse urged along its muffled ST 35 engine Its 114 license AMA Life member number 14 Bob has beenflying radiofrom its beginning Photograph Owen Morris A 250-mab battery pack Weights 9 oz total 250-mah set up 12 oz 12 ah Price writing $8500 plus $625 optional charger further details delivery date contact 77 Products 17119 So Harvard Blvd Gardena CA 90247 Otto recently underwent open-heart surgery anticipate delay delivery 6 8 weeks Presuming quality workmanship evidenced Ottos OS Max ignition coversions will also pres ent new TLS can hardly wait get others developing commercial TIS unit please advise us might share information readers unbelievable prices glow fuel future may well see more gasoline oil used phases mod eling Since gasoline contains much energy per ounce methanol some extra weight TIS can made up using smaller tank Coyle What Zone 12th Annual SAM Champs will held July 25-27 National Guard Coyle Drop Zone New Jersey Coyle approximately 4 miles northwest intersection routes 539 72 20 miles southwest Lake hurst NAS site reported abandoned WW II fighter field gravel runways ample open area easy retrieval via motorbike Contest manager Woody Woodman 389 Floral Lane Saddle Brook NJ 07662 R/C director Tom Knakal 7 Seneca Ave Lake Hiawatha NJ 07034 Coyle 45 minutes Atlantic City its famous boardwalk bring family Combine vacation SAM Champs Old Timer ROW quote Ted Kafer SAM 21 newsletter After eight days steady rain northern California advent old-timer seaplane meet fun fly may become reality John Pond also makes tongue cheek sug gestion such event Model Builder column Well gentlemen R Kreunzinger Salem would like enter added pair 33 Gee Bee floats 40 engine 2-year-old Kloud King MA plan #103 finds excellent seaplane says light wing loading dihedral bother rough water takeoffs under calm conditions nice gentle performer off water Now application didnt have mind drew up sure sounds like fun brings up intriguing question ROW event prior 1942 cannot find evidence ROW events pre-war Nationals ever run local contests Some real oldtimers speak up Id welcome correspondence subject would ecstatic over photos share everyone EditorWe remember late Continued page 88 Helmer Johnsons Playboy Senior doing what comes naturally know Fort Worth Thunderbird See decal Poetic pose caught Owen Morris same Houston contest Docs own Kloud King plan No 103 probably popular non-kit th land 200-mm telephoto Dave Marsh caught RA Kreuzingers OS 4ORC version just leaviig water requires 40-ft run its 33 Gee Bee floats Mr K has enjoyed bird two years WORLD S LARGEST MASTER MODELS ASS T GIANTS OF flOUT 5-10 FT SPANS Catalog Subscription SI Br $110 ley Check Same Thee n Plan Too went end need yocr neppoct O en) whot new nwvbovs oth sinc weve becene o ocliente 4eeiuu service orgoujeettee deolon ceppovt ~ecO5 98 Lcd Hcdoe Rueck $49 4DuuIittlucGee B.545-77 Flying Feet 8- 70 $30 58 Sepeeeo6eeSdo$20103 FyngFoctR- 7G $49 62 Hwveet Ike Roe82345 66 teococd R-26 $39 78 Plc We8deII-Weo$3949 mock Widcw P81 $26 66 0 H Conet EecSitpo Clock Wduc P81 $69 62 26 Molligon$66 Jenknrv JUtO Olt 74 Poecc Openiel$395$ H-P 0400 Ho 4 P0830 81 Mesqcitn Oqn 633$34100 H P 0400 PG 042 55 Hooth Roby Rclet522-81 Fekket 0-8 Pu 930 58 ltocckr M-5 leo Pu$1478 Sopoc tie Pop Pu $25 70 Boyle 000-Ie83945 B-W 8td-Opv $29 62 Cuttiw Hawk P6-E$39107 Mortlt MR-I Conk 66 Curt Slvthe A-S$3266 Ceeclrut 0-Ill Ole $10. 60 Dougloc 0-39 Ole$1561 AEG 09 $otekv $18 71 MevOt C-tO Rosek53058 Soleowe 3A2 $15 62 Skyvoukof XP5P$1682 0nnov-Och DIV $30 57 CetOLceSO3C-t$151160o6eo 89 Rveeker 049 IlOOPtANS LABLE vided eliminate high speed flier desires Bill further claims Hi Flight 12 consists rugged-welded steel frame completely rebuilt 12-volt motor finely machined steel drum two inch core electrics necessary its operation Included Hi Flight 12 ballbearing turn-around price en tire Hi Flight 12 launch system $17900 FOB Hemet California winch also available kit form $8900 get welded frame drilled Complete instructions showing assembly wiring included Re built long-shaft starters also available $2250 winch drums $2495 Write Hi Flight Model Products 43225 Whittier Ave Hemet CA 92434Phone 714 927-4666 Milwaukee Minneapolis Winston-Salem Three areas soaring growing reported first Ron Kopp Mil waukee Suds City Sailplane Team amicable split power club doing own youre area contact Ron Kopp 8010 WWaterford Ave Milwaukee WI 53220 Minneapolis comes news Minnesota Soaring Team well underway Unfortunately no address provided H Evanston says club has three winches sod farm about ten miles south Minneapolis Activities designed around family cant find sod farm look up Evan stons claim hour 30-minute flights Sailaire should draw attention Charles Spear secretary Triad Thermal Thumbers comes announcement forming club Winston Salem Greensboro High Point area North Carolina charter less year theyve already scheduled FAI quarter-finals hoping warrant LSF regional Contact Charles Spear 800 Holly Lane Mocksville NC 27028 Great Race III announced Ken Ward president SOAR heralded event first started 1976 has become annual classic will run conjuction Stand-off Scale contest race open AMA chartered club scheduled August 12 Stand-off Scale contest will beheld August 13 open AMA member details contact Bill Christian CD 1604 N Chestnut Arlington Hts IL 60004 League Silent flight Gordon Pearson LSF President comes news should interest sailplane flier world LSF National Tournament should say International Tourna ment will again held year traditional last weekend Augustthe 26th 27th Already least ten sites have chosen regionals plans underway additional tournaments foreign chapters exist will two-year program whereby percentage top scorers regions will eligible compete interna tional fly-off determine LSF Champion fly-off would scheduled 1979 Discussions underway extra-spe cial eventsthis 1979 contest whereby LSF member could fly potential event could greatest get-together soaring event-ever Details finalized will announced sent LSF members Dan Pruss Rt 2 Box 490 Plainfield IL 60544 RC Old Timer/Mathews continued page 27 thirties ROW free flight event Lake Hopatcong NJ published Air Trials flying old-timer models off water certainly has appeal us have access ponds lakes sure have lakes Kansas delightful way com bine picnic family outing favorite recreation Say again SAM still appears New Goldberg Retracts feature Coil main gear instead three Field re ports experts using Goldberg gear found Coil adequate increased firmness gear especially down-wind turns ground giving better takeoff landing control Carl Goldberg Models Inc 4735W Chicago Ave Chicago IL 60651 product review product review product review some confusion over legality glow engines RC Old-Timer events Glow engines completely legal SAM Radio-Assist events According latest ballot SAM member ship use glow engines free flight oldtimers prohibited changes sub mitted section III rejected membership quickly review vote noneSAM reader changes rules governing free flight events removal responsibility authentication design builder allowing two models per event Radio Control As sist changes 8 oz per sq ft whether ignition glow powered glow con verted-to-ignition engines require 225 sq wing area 10 cu dis placement outlawing pressure fuel systems rear-rotor engines tuned pipes Flight Rule changes Radio Assist Maximum time flights will five minutes overtime deducted En gine runs changed 20 seconds glow 40 seconds ignition Six attempts three officials attempt being flight under 40 seconds Timer will stop calling time 10 seconds prior max other rules remain printed Society Antique Modelers official rule book 1978 AMA 78-79 rule book rules now finalized can learn live regardless personal preferences would appear few RC Assist models devel oped over last few seasons built winter will require major modifi cations remain SAM legal Several performance gaps between sparkers glows have closed Hopefully new contest season will see ever increasing numbers entrants enjoying delightful aspect hobby-sport Ohlssons California Champion Pace maker Ohlsson name familiar anyone ever remote terest powered model aircraft Irwin partner Harry Rice produced tens thousands engines 1937 1955 era What may well known Irwin started business model kit California Record Holder first advertised MAN July 1936 featured Brown Jr drawings Ohlsson decided enter engine manufacturing business developing prototype engine felt need testing flight conditions Pace maker test bed new Min iature engine Feb 1937 issue MAN contains photo combina tion clearly illustrating radical departure then-standard beam engine mounts Pacemaker first model ever utilize radial motor mount Pacemaker kit immensely suc cessful California unique motor 88 Model Aviation product review product review product review KGL IAT L4 fu0aicc4 7th Annual / Pre-Season Radio System Check-up pcs Valid until May 15 1978 FULL TIME TECHNICIANS FACTORY TRAINED ST TEST EQUIPMENT NEW MODERN SHOP ONLY GENUINE FACTORY PARTS SFACTION GUARANTEED RE-SEASON SPECIAL ONLY $2495 pius postuqe Less AMA Coupon Repair Net Cost Perform Transmitter Battery Load Check Perform Transmitter Crystal Frequency Count Perform Receiver Battery Load Check Check Battery Charging Circuit Tune Transmitter R F Check Receiver Sensitivity & Adjust Align Receiver RF lF Stages Check Receiver Logic Align Transmitter Encoder Check Servo Stalled Motor Current Repair parts additional Check Servo Mechanics Adjust Servo Centering Perform System Servo Noise Check Shock Test Complete Airborne System Range Check System System Flight Test Necessary ~ae Kraft Great Lakes Inc 6787 Wales Ave PO Box 2182 North CantonOhio 11720 eii Mark Porter Dave Male 216 199-8310 og fte4o4ta/ dewcce BankAmericard Master Charge Welcome mount attractive cabin design lent itself variety cowl paint con figurations Ohisson won California State Fair Contest Sept 1937 large margin legend began Expressly developed new 30second-motor-run rules Pacemaker received maximum points judged engineering design Minia ture engine entered aeronaut ical display same fair received gold seal award hence name famous engine became Gold Seal Pacemaker construction con ventional exception dural wire wing tips empennage outlines would strongly recommend laminated basswood sheet outlines Spruce fuse lage members wing spars would excellent substitution changes Pacemaker would splendid choice seaplane events could delight ful sport model Under SAM rules maximum engine size would 40 cc 25 cu Time Target Events Trend Time-target precision events can great fun fine equalizers beginners experts Such events popularized West Coast prior WW II often including beauty craftsmanship points formula find amusing note back thermal events much popular East Coast mid-West events suitable small fields popular West Coast observes West Coast origin such popular thermal designs Pacemaker Mystery Man Winged Vict ory Westerner Dennyplane similar beauties Time-target appearance events also very popular England prior WWII witness Bowden Perpetual Trophy England also produced some designs strong esthetic appeal during era two outstanding examples being Vul can D H Russel Barnards Premier Lion Incidentally has picture either Id like use Old-Timer-of-the-Month subjects time-target events rapidly gaining popularity around country prominent factor desire somehow equalize disparities performance between ordinary popular pro totypes such Clippers Playboys equally appealing designs lack floating ability mentioned last column rules IS-minute precis sion used Houston group Other approaches considerable appeal Chicken Add em Up Chicken events employ 30-second motor run watch starting flier hands transmitter timer stopping takes grabs thing back Ten-minute maxs bonus points landing inside circle no time recorded off-field landings event can close much performance gap previously mentioned superior wind penetration flat-bottomed Clark Y airfoils offsetting floating ability traditional contest machines Add em Up has its objective 15-minute three-flight total flight time reduced second second single flight over 7 minutes Bonus points usually awarded landing inside designated circle again float ers no particular advantage unless contestant chooses spin out boomer crash inside circle Clarence Haught has mentioned col umn growing concern over nearly total domination Antique classes Clipper Mkll us have dis taste one-design trend Playboys producing Old Timer events need examine results nearly contest see trend early days SAM movement saw entries composed numerous diverse teresting designs much en joyed walking around playing what game no longer case current situation almost forces interested winning choose narrow band wide spectrum avail able choices Hopefully more SAM chapters will innovate events bring back some diversity design intro duce stronger element luck fun June1978 89 KRAFT S2495 500 $1995 Lets face folks AMA free flight RC glider events can provide fero cious competition anyone wants SAM events chance relaxation good fellowship importantly fun Painless Servo Mounts continuously perplexing problem converting Old Timer models radio has mounting servos fuselage frame sides Invariably end up using heavy maple motor-mount stock epoxied place sides cross members hold down servo tray Hardly neat light-weight method have recently used Ser-kit Buckeye Balsa 3330 Youngstown-Kingsville Road Cortland Oh 44410 find ideal oldtimer use consists two groved hard wood blocks 16 o tight-fitting rails slid adjusted fore aft optimum servo loca tion glued slots retained scraps left over cutting rails simple solution com plex problem Buckeye Balsa also has inventory sheet balsa balsa spruce strip 54 60 66 72 lengths Wood long lengths often needed construction really huge old timers avoid splicing Dee B Mathews 506 South Walnut Greensburg KS 67054 RC Pylon/Lane continued page 29 come event Nationals C B Enterprises has some success 800 sq Cosmic Wind design Scale Squadron Orange Coun ty California beginning get some interest going scale AT-6 Texan class AT-6 800 sq class thereabouts hope guys have ap parently upset February March articles will understand now am trying downgrade QM Formula look around people have dropped out QM Formula primary reasons planes going too fast cost too much know thats what racing about think its too bad events end up pros reaping benefits seems should room anyone wants compete QM Formula coming dead last time Hopefully have made model ers irate article think have aware average modelers would like compete other one-class racing limited design aircraft Hey guys Chicago area Mr Justice 1816 N Mozart Chicago IL would like get pylon racing wife Debra wishes caller wants know about duties caller about contacting Justices give some pointers racing am sure would appreciate have copy MNPRA manual published several years ago Debra would like read winner Reno Air Races last year entry American Air Rac ing Teams Top Turkey Figure three view what looked like ship modified Shoestring design Next month will have 3-view Team Tur keys new ship called Wild Turkey Dave Lane 447 W 136th St Haw thorne CA 90250 Make Props/de Bolt continued page 33 speak force applied pro peller As propeller works creates thrust force transmitted aircraft through blade material via engine shaft thrust would also have center line force Thrust result combi nation lift developed airfoil upper curve fan effect off bottom blade would line resultant between So resultant line thrust could parallel mechanical line thrust tip hub Ideally two lines thrust would same loca tion chord-wise torsional rotational force set up would tend rotate blade about mechanical line force can make variations stan dard design top view blade can approach ideal position lines force diagram No 3 show thrust line force can product review product review product review Pactra Aero-Poxy Pactra offers new line specially formulated 2-component system finishes Aero-Poxy tough fuel-proof marresistant one-coat armour finish designed endure rough handling fuel spillage unique formulation utilizes non-irritating non-sensitizing curing agent elimi nates dermatitic respiratory problems Aero-Poxy free lead hazards nontoxic dry Available colors gloss clear primer 8 oz onlyl choice Super Hi-Gloss Catalyst Flat Catalyst versatility finish color-mixing capabili ties Suitable brush spray Available 4- 8-oz cans plus thinners brushing spray 16- 32-oz cans Pactra Indus tries 7060 Hollywood Blvd Los Angeles CA 90028 product review product review product review 90 Model Aviation Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground GREATEST B/C BASIC TRAINEB Design & Kit ALL TIME Ask over 25000 satisfied builders H-BAY dealers sold themSHALL WE SAY MORE Andrews Aircraft Model Co Inc US Rte 1& North Sc Topsfield Mass 01983 887-8541 Price $3995 kit pee dollar- bar em all
Edition: Model Aviation - 1978/06
Page Numbers: 26, 27, 88, 89, 90
Radio Control OlctTirners Dee Mathews AS MANY aware several sys tems have developed replace raditional make-and-break points used spark-ignition model engines published far complex requiring electronic skills beyond us --F-I IRWIN OHLSSONS PACEMAKER SPAN 68 /2 CHORD 0 GOLD SEAL 60 SAM RULES MAX GLOW 3Ocuin 0 I 2 3 4 5 6 7 5 9 10 months have following closely development pre-built com mercially available system hoping would become available Well friends now can announced quote letter received Otto Bernhardts 77 Products transistorized ignition system al lows fly RC model ig nition engine eliminates elec trical noises generated ignition sys tem radio gear affected electrical noise unshielded igni tion system such used free flight can make radio go crazy unit intended RC modeler would like operate model aircraft 0 engine gasoline oil instead glow fuel take advantage economy reduced fuel costs associated ignition transistorized ignition system complete ready install includes ignition coil assembly switch assem bly shielded high-tension lead battery pack charger special thin wall T-handle socket wrench battery charger will furnished match battery size preference Other details 250-mah pack will give 20- 25-minute motor run l2-ah pack will run engine long 1 2 hours Sizes l/ dia X 2Ys long coil 1 3/16 X 1 1/16 switch-charger jack assembly 11/16 26 Model Aviation both feet off ground Paul King Sets free Miss America Bert Stiegler snapped gaggle famous oldies Ito R Powerhouse three Playboy Seniors Comet Sailplane Buzzard Bombshell Like hawks summers day picture riding air currents simultaneously oldtimersnotably pylon jobsonce thought hopeless RC subjects Owen Morris pic Climbing Out JSC/RCC R/C Oldtimer contest Houston Bob Elliotts EK Productal Taibi Powerhouse urged along its muffled ST 35 engine Its 114 license AMA Life member number 14 Bob has beenflying radiofrom its beginning Photograph Owen Morris A 250-mab battery pack Weights 9 oz total 250-mah set up 12 oz 12 ah Price writing $8500 plus $625 optional charger further details delivery date contact 77 Products 17119 So Harvard Blvd Gardena CA 90247 Otto recently underwent open-heart surgery anticipate delay delivery 6 8 weeks Presuming quality workmanship evidenced Ottos OS Max ignition coversions will also pres ent new TLS can hardly wait get others developing commercial TIS unit please advise us might share information readers unbelievable prices glow fuel future may well see more gasoline oil used phases mod eling Since gasoline contains much energy per ounce methanol some extra weight TIS can made up using smaller tank Coyle What Zone 12th Annual SAM Champs will held July 25-27 National Guard Coyle Drop Zone New Jersey Coyle approximately 4 miles northwest intersection routes 539 72 20 miles southwest Lake hurst NAS site reported abandoned WW II fighter field gravel runways ample open area easy retrieval via motorbike Contest manager Woody Woodman 389 Floral Lane Saddle Brook NJ 07662 R/C director Tom Knakal 7 Seneca Ave Lake Hiawatha NJ 07034 Coyle 45 minutes Atlantic City its famous boardwalk bring family Combine vacation SAM Champs Old Timer ROW quote Ted Kafer SAM 21 newsletter After eight days steady rain northern California advent old-timer seaplane meet fun fly may become reality John Pond also makes tongue cheek sug gestion such event Model Builder column Well gentlemen R Kreunzinger Salem would like enter added pair 33 Gee Bee floats 40 engine 2-year-old Kloud King MA plan #103 finds excellent seaplane says light wing loading dihedral bother rough water takeoffs under calm conditions nice gentle performer off water Now application didnt have mind drew up sure sounds like fun brings up intriguing question ROW event prior 1942 cannot find evidence ROW events pre-war Nationals ever run local contests Some real oldtimers speak up Id welcome correspondence subject would ecstatic over photos share everyone EditorWe remember late Continued page 88 Helmer Johnsons Playboy Senior doing what comes naturally know Fort Worth Thunderbird See decal Poetic pose caught Owen Morris same Houston contest Docs own Kloud King plan No 103 probably popular non-kit th land 200-mm telephoto Dave Marsh caught RA Kreuzingers OS 4ORC version just leaviig water requires 40-ft run its 33 Gee Bee floats Mr K has enjoyed bird two years WORLD S LARGEST MASTER MODELS ASS T GIANTS OF flOUT 5-10 FT SPANS Catalog Subscription SI Br $110 ley Check Same Thee n Plan Too went end need yocr neppoct O en) whot new nwvbovs oth sinc weve becene o ocliente 4eeiuu service orgoujeettee deolon ceppovt ~ecO5 98 Lcd Hcdoe Rueck $49 4DuuIittlucGee B.545-77 Flying Feet 8- 70 $30 58 Sepeeeo6eeSdo$20103 FyngFoctR- 7G $49 62 Hwveet Ike Roe82345 66 teococd R-26 $39 78 Plc We8deII-Weo$3949 mock Widcw P81 $26 66 0 H Conet EecSitpo Clock Wduc P81 $69 62 26 Molligon$66 Jenknrv JUtO Olt 74 Poecc Openiel$395$ H-P 0400 Ho 4 P0830 81 Mesqcitn Oqn 633$34100 H P 0400 PG 042 55 Hooth Roby Rclet522-81 Fekket 0-8 Pu 930 58 ltocckr M-5 leo Pu$1478 Sopoc tie Pop Pu $25 70 Boyle 000-Ie83945 B-W 8td-Opv $29 62 Cuttiw Hawk P6-E$39107 Mortlt MR-I Conk 66 Curt Slvthe A-S$3266 Ceeclrut 0-Ill Ole $10. 60 Dougloc 0-39 Ole$1561 AEG 09 $otekv $18 71 MevOt C-tO Rosek53058 Soleowe 3A2 $15 62 Skyvoukof XP5P$1682 0nnov-Och DIV $30 57 CetOLceSO3C-t$151160o6eo 89 Rveeker 049 IlOOPtANS LABLE vided eliminate high speed flier desires Bill further claims Hi Flight 12 consists rugged-welded steel frame completely rebuilt 12-volt motor finely machined steel drum two inch core electrics necessary its operation Included Hi Flight 12 ballbearing turn-around price en tire Hi Flight 12 launch system $17900 FOB Hemet California winch also available kit form $8900 get welded frame drilled Complete instructions showing assembly wiring included Re built long-shaft starters also available $2250 winch drums $2495 Write Hi Flight Model Products 43225 Whittier Ave Hemet CA 92434Phone 714 927-4666 Milwaukee Minneapolis Winston-Salem Three areas soaring growing reported first Ron Kopp Mil waukee Suds City Sailplane Team amicable split power club doing own youre area contact Ron Kopp 8010 WWaterford Ave Milwaukee WI 53220 Minneapolis comes news Minnesota Soaring Team well underway Unfortunately no address provided H Evanston says club has three winches sod farm about ten miles south Minneapolis Activities designed around family cant find sod farm look up Evan stons claim hour 30-minute flights Sailaire should draw attention Charles Spear secretary Triad Thermal Thumbers comes announcement forming club Winston Salem Greensboro High Point area North Carolina charter less year theyve already scheduled FAI quarter-finals hoping warrant LSF regional Contact Charles Spear 800 Holly Lane Mocksville NC 27028 Great Race III announced Ken Ward president SOAR heralded event first started 1976 has become annual classic will run conjuction Stand-off Scale contest race open AMA chartered club scheduled August 12 Stand-off Scale contest will beheld August 13 open AMA member details contact Bill Christian CD 1604 N Chestnut Arlington Hts IL 60004 League Silent flight Gordon Pearson LSF President comes news should interest sailplane flier world LSF National Tournament should say International Tourna ment will again held year traditional last weekend Augustthe 26th 27th Already least ten sites have chosen regionals plans underway additional tournaments foreign chapters exist will two-year program whereby percentage top scorers regions will eligible compete interna tional fly-off determine LSF Champion fly-off would scheduled 1979 Discussions underway extra-spe cial eventsthis 1979 contest whereby LSF member could fly potential event could greatest get-together soaring event-ever Details finalized will announced sent LSF members Dan Pruss Rt 2 Box 490 Plainfield IL 60544 RC Old Timer/Mathews continued page 27 thirties ROW free flight event Lake Hopatcong NJ published Air Trials flying old-timer models off water certainly has appeal us have access ponds lakes sure have lakes Kansas delightful way com bine picnic family outing favorite recreation Say again SAM still appears New Goldberg Retracts feature Coil main gear instead three Field re ports experts using Goldberg gear found Coil adequate increased firmness gear especially down-wind turns ground giving better takeoff landing control Carl Goldberg Models Inc 4735W Chicago Ave Chicago IL 60651 product review product review product review some confusion over legality glow engines RC Old-Timer events Glow engines completely legal SAM Radio-Assist events According latest ballot SAM member ship use glow engines free flight oldtimers prohibited changes sub mitted section III rejected membership quickly review vote noneSAM reader changes rules governing free flight events removal responsibility authentication design builder allowing two models per event Radio Control As sist changes 8 oz per sq ft whether ignition glow powered glow con verted-to-ignition engines require 225 sq wing area 10 cu dis placement outlawing pressure fuel systems rear-rotor engines tuned pipes Flight Rule changes Radio Assist Maximum time flights will five minutes overtime deducted En gine runs changed 20 seconds glow 40 seconds ignition Six attempts three officials attempt being flight under 40 seconds Timer will stop calling time 10 seconds prior max other rules remain printed Society Antique Modelers official rule book 1978 AMA 78-79 rule book rules now finalized can learn live regardless personal preferences would appear few RC Assist models devel oped over last few seasons built winter will require major modifi cations remain SAM legal Several performance gaps between sparkers glows have closed Hopefully new contest season will see ever increasing numbers entrants enjoying delightful aspect hobby-sport Ohlssons California Champion Pace maker Ohlsson name familiar anyone ever remote terest powered model aircraft Irwin partner Harry Rice produced tens thousands engines 1937 1955 era What may well known Irwin started business model kit California Record Holder first advertised MAN July 1936 featured Brown Jr drawings Ohlsson decided enter engine manufacturing business developing prototype engine felt need testing flight conditions Pace maker test bed new Min iature engine Feb 1937 issue MAN contains photo combina tion clearly illustrating radical departure then-standard beam engine mounts Pacemaker first model ever utilize radial motor mount Pacemaker kit immensely suc cessful California unique motor 88 Model Aviation product review product review product review KGL IAT L4 fu0aicc4 7th Annual / Pre-Season Radio System Check-up pcs Valid until May 15 1978 FULL TIME TECHNICIANS FACTORY TRAINED ST TEST EQUIPMENT NEW MODERN SHOP ONLY GENUINE FACTORY PARTS SFACTION GUARANTEED RE-SEASON SPECIAL ONLY $2495 pius postuqe Less AMA Coupon Repair Net Cost Perform Transmitter Battery Load Check Perform Transmitter Crystal Frequency Count Perform Receiver Battery Load Check Check Battery Charging Circuit Tune Transmitter R F Check Receiver Sensitivity & Adjust Align Receiver RF lF Stages Check Receiver Logic Align Transmitter Encoder Check Servo Stalled Motor Current Repair parts additional Check Servo Mechanics Adjust Servo Centering Perform System Servo Noise Check Shock Test Complete Airborne System Range Check System System Flight Test Necessary ~ae Kraft Great Lakes Inc 6787 Wales Ave PO Box 2182 North CantonOhio 11720 eii Mark Porter Dave Male 216 199-8310 og fte4o4ta/ dewcce BankAmericard Master Charge Welcome mount attractive cabin design lent itself variety cowl paint con figurations Ohisson won California State Fair Contest Sept 1937 large margin legend began Expressly developed new 30second-motor-run rules Pacemaker received maximum points judged engineering design Minia ture engine entered aeronaut ical display same fair received gold seal award hence name famous engine became Gold Seal Pacemaker construction con ventional exception dural wire wing tips empennage outlines would strongly recommend laminated basswood sheet outlines Spruce fuse lage members wing spars would excellent substitution changes Pacemaker would splendid choice seaplane events could delight ful sport model Under SAM rules maximum engine size would 40 cc 25 cu Time Target Events Trend Time-target precision events can great fun fine equalizers beginners experts Such events popularized West Coast prior WW II often including beauty craftsmanship points formula find amusing note back thermal events much popular East Coast mid-West events suitable small fields popular West Coast observes West Coast origin such popular thermal designs Pacemaker Mystery Man Winged Vict ory Westerner Dennyplane similar beauties Time-target appearance events also very popular England prior WWII witness Bowden Perpetual Trophy England also produced some designs strong esthetic appeal during era two outstanding examples being Vul can D H Russel Barnards Premier Lion Incidentally has picture either Id like use Old-Timer-of-the-Month subjects time-target events rapidly gaining popularity around country prominent factor desire somehow equalize disparities performance between ordinary popular pro totypes such Clippers Playboys equally appealing designs lack floating ability mentioned last column rules IS-minute precis sion used Houston group Other approaches considerable appeal Chicken Add em Up Chicken events employ 30-second motor run watch starting flier hands transmitter timer stopping takes grabs thing back Ten-minute maxs bonus points landing inside circle no time recorded off-field landings event can close much performance gap previously mentioned superior wind penetration flat-bottomed Clark Y airfoils offsetting floating ability traditional contest machines Add em Up has its objective 15-minute three-flight total flight time reduced second second single flight over 7 minutes Bonus points usually awarded landing inside designated circle again float ers no particular advantage unless contestant chooses spin out boomer crash inside circle Clarence Haught has mentioned col umn growing concern over nearly total domination Antique classes Clipper Mkll us have dis taste one-design trend Playboys producing Old Timer events need examine results nearly contest see trend early days SAM movement saw entries composed numerous diverse teresting designs much en joyed walking around playing what game no longer case current situation almost forces interested winning choose narrow band wide spectrum avail able choices Hopefully more SAM chapters will innovate events bring back some diversity design intro duce stronger element luck fun June1978 89 KRAFT S2495 500 $1995 Lets face folks AMA free flight RC glider events can provide fero cious competition anyone wants SAM events chance relaxation good fellowship importantly fun Painless Servo Mounts continuously perplexing problem converting Old Timer models radio has mounting servos fuselage frame sides Invariably end up using heavy maple motor-mount stock epoxied place sides cross members hold down servo tray Hardly neat light-weight method have recently used Ser-kit Buckeye Balsa 3330 Youngstown-Kingsville Road Cortland Oh 44410 find ideal oldtimer use consists two groved hard wood blocks 16 o tight-fitting rails slid adjusted fore aft optimum servo loca tion glued slots retained scraps left over cutting rails simple solution com plex problem Buckeye Balsa also has inventory sheet balsa balsa spruce strip 54 60 66 72 lengths Wood long lengths often needed construction really huge old timers avoid splicing Dee B Mathews 506 South Walnut Greensburg KS 67054 RC Pylon/Lane continued page 29 come event Nationals C B Enterprises has some success 800 sq Cosmic Wind design Scale Squadron Orange Coun ty California beginning get some interest going scale AT-6 Texan class AT-6 800 sq class thereabouts hope guys have ap parently upset February March articles will understand now am trying downgrade QM Formula look around people have dropped out QM Formula primary reasons planes going too fast cost too much know thats what racing about think its too bad events end up pros reaping benefits seems should room anyone wants compete QM Formula coming dead last time Hopefully have made model ers irate article think have aware average modelers would like compete other one-class racing limited design aircraft Hey guys Chicago area Mr Justice 1816 N Mozart Chicago IL would like get pylon racing wife Debra wishes caller wants know about duties caller about contacting Justices give some pointers racing am sure would appreciate have copy MNPRA manual published several years ago Debra would like read winner Reno Air Races last year entry American Air Rac ing Teams Top Turkey Figure three view what looked like ship modified Shoestring design Next month will have 3-view Team Tur keys new ship called Wild Turkey Dave Lane 447 W 136th St Haw thorne CA 90250 Make Props/de Bolt continued page 33 speak force applied pro peller As propeller works creates thrust force transmitted aircraft through blade material via engine shaft thrust would also have center line force Thrust result combi nation lift developed airfoil upper curve fan effect off bottom blade would line resultant between So resultant line thrust could parallel mechanical line thrust tip hub Ideally two lines thrust would same loca tion chord-wise torsional rotational force set up would tend rotate blade about mechanical line force can make variations stan dard design top view blade can approach ideal position lines force diagram No 3 show thrust line force can product review product review product review Pactra Aero-Poxy Pactra offers new line specially formulated 2-component system finishes Aero-Poxy tough fuel-proof marresistant one-coat armour finish designed endure rough handling fuel spillage unique formulation utilizes non-irritating non-sensitizing curing agent elimi nates dermatitic respiratory problems Aero-Poxy free lead hazards nontoxic dry Available colors gloss clear primer 8 oz onlyl choice Super Hi-Gloss Catalyst Flat Catalyst versatility finish color-mixing capabili ties Suitable brush spray Available 4- 8-oz cans plus thinners brushing spray 16- 32-oz cans Pactra Indus tries 7060 Hollywood Blvd Los Angeles CA 90028 product review product review product review 90 Model Aviation Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground GREATEST B/C BASIC TRAINEB Design & Kit ALL TIME Ask over 25000 satisfied builders H-BAY dealers sold themSHALL WE SAY MORE Andrews Aircraft Model Co Inc US Rte 1& North Sc Topsfield Mass 01983 887-8541 Price $3995 kit pee dollar- bar em all
Edition: Model Aviation - 1978/06
Page Numbers: 26, 27, 88, 89, 90
Radio Control OlctTirners Dee Mathews AS MANY aware several sys tems have developed replace raditional make-and-break points used spark-ignition model engines published far complex requiring electronic skills beyond us --F-I IRWIN OHLSSONS PACEMAKER SPAN 68 /2 CHORD 0 GOLD SEAL 60 SAM RULES MAX GLOW 3Ocuin 0 I 2 3 4 5 6 7 5 9 10 months have following closely development pre-built com mercially available system hoping would become available Well friends now can announced quote letter received Otto Bernhardts 77 Products transistorized ignition system al lows fly RC model ig nition engine eliminates elec trical noises generated ignition sys tem radio gear affected electrical noise unshielded igni tion system such used free flight can make radio go crazy unit intended RC modeler would like operate model aircraft 0 engine gasoline oil instead glow fuel take advantage economy reduced fuel costs associated ignition transistorized ignition system complete ready install includes ignition coil assembly switch assem bly shielded high-tension lead battery pack charger special thin wall T-handle socket wrench battery charger will furnished match battery size preference Other details 250-mah pack will give 20- 25-minute motor run l2-ah pack will run engine long 1 2 hours Sizes l/ dia X 2Ys long coil 1 3/16 X 1 1/16 switch-charger jack assembly 11/16 26 Model Aviation both feet off ground Paul King Sets free Miss America Bert Stiegler snapped gaggle famous oldies Ito R Powerhouse three Playboy Seniors Comet Sailplane Buzzard Bombshell Like hawks summers day picture riding air currents simultaneously oldtimersnotably pylon jobsonce thought hopeless RC subjects Owen Morris pic Climbing Out JSC/RCC R/C Oldtimer contest Houston Bob Elliotts EK Productal Taibi Powerhouse urged along its muffled ST 35 engine Its 114 license AMA Life member number 14 Bob has beenflying radiofrom its beginning Photograph Owen Morris A 250-mab battery pack Weights 9 oz total 250-mah set up 12 oz 12 ah Price writing $8500 plus $625 optional charger further details delivery date contact 77 Products 17119 So Harvard Blvd Gardena CA 90247 Otto recently underwent open-heart surgery anticipate delay delivery 6 8 weeks Presuming quality workmanship evidenced Ottos OS Max ignition coversions will also pres ent new TLS can hardly wait get others developing commercial TIS unit please advise us might share information readers unbelievable prices glow fuel future may well see more gasoline oil used phases mod eling Since gasoline contains much energy per ounce methanol some extra weight TIS can made up using smaller tank Coyle What Zone 12th Annual SAM Champs will held July 25-27 National Guard Coyle Drop Zone New Jersey Coyle approximately 4 miles northwest intersection routes 539 72 20 miles southwest Lake hurst NAS site reported abandoned WW II fighter field gravel runways ample open area easy retrieval via motorbike Contest manager Woody Woodman 389 Floral Lane Saddle Brook NJ 07662 R/C director Tom Knakal 7 Seneca Ave Lake Hiawatha NJ 07034 Coyle 45 minutes Atlantic City its famous boardwalk bring family Combine vacation SAM Champs Old Timer ROW quote Ted Kafer SAM 21 newsletter After eight days steady rain northern California advent old-timer seaplane meet fun fly may become reality John Pond also makes tongue cheek sug gestion such event Model Builder column Well gentlemen R Kreunzinger Salem would like enter added pair 33 Gee Bee floats 40 engine 2-year-old Kloud King MA plan #103 finds excellent seaplane says light wing loading dihedral bother rough water takeoffs under calm conditions nice gentle performer off water Now application didnt have mind drew up sure sounds like fun brings up intriguing question ROW event prior 1942 cannot find evidence ROW events pre-war Nationals ever run local contests Some real oldtimers speak up Id welcome correspondence subject would ecstatic over photos share everyone EditorWe remember late Continued page 88 Helmer Johnsons Playboy Senior doing what comes naturally know Fort Worth Thunderbird See decal Poetic pose caught Owen Morris same Houston contest Docs own Kloud King plan No 103 probably popular non-kit th land 200-mm telephoto Dave Marsh caught RA Kreuzingers OS 4ORC version just leaviig water requires 40-ft run its 33 Gee Bee floats Mr K has enjoyed bird two years WORLD S LARGEST MASTER MODELS ASS T GIANTS OF flOUT 5-10 FT SPANS Catalog Subscription SI Br $110 ley Check Same Thee n Plan Too went end need yocr neppoct O en) whot new nwvbovs oth sinc weve becene o ocliente 4eeiuu service orgoujeettee deolon ceppovt ~ecO5 98 Lcd Hcdoe Rueck $49 4DuuIittlucGee B.545-77 Flying Feet 8- 70 $30 58 Sepeeeo6eeSdo$20103 FyngFoctR- 7G $49 62 Hwveet Ike Roe82345 66 teococd R-26 $39 78 Plc We8deII-Weo$3949 mock Widcw P81 $26 66 0 H Conet EecSitpo Clock Wduc P81 $69 62 26 Molligon$66 Jenknrv JUtO Olt 74 Poecc Openiel$395$ H-P 0400 Ho 4 P0830 81 Mesqcitn Oqn 633$34100 H P 0400 PG 042 55 Hooth Roby Rclet522-81 Fekket 0-8 Pu 930 58 ltocckr M-5 leo Pu$1478 Sopoc tie Pop Pu $25 70 Boyle 000-Ie83945 B-W 8td-Opv $29 62 Cuttiw Hawk P6-E$39107 Mortlt MR-I Conk 66 Curt Slvthe A-S$3266 Ceeclrut 0-Ill Ole $10. 60 Dougloc 0-39 Ole$1561 AEG 09 $otekv $18 71 MevOt C-tO Rosek53058 Soleowe 3A2 $15 62 Skyvoukof XP5P$1682 0nnov-Och DIV $30 57 CetOLceSO3C-t$151160o6eo 89 Rveeker 049 IlOOPtANS LABLE vided eliminate high speed flier desires Bill further claims Hi Flight 12 consists rugged-welded steel frame completely rebuilt 12-volt motor finely machined steel drum two inch core electrics necessary its operation Included Hi Flight 12 ballbearing turn-around price en tire Hi Flight 12 launch system $17900 FOB Hemet California winch also available kit form $8900 get welded frame drilled Complete instructions showing assembly wiring included Re built long-shaft starters also available $2250 winch drums $2495 Write Hi Flight Model Products 43225 Whittier Ave Hemet CA 92434Phone 714 927-4666 Milwaukee Minneapolis Winston-Salem Three areas soaring growing reported first Ron Kopp Mil waukee Suds City Sailplane Team amicable split power club doing own youre area contact Ron Kopp 8010 WWaterford Ave Milwaukee WI 53220 Minneapolis comes news Minnesota Soaring Team well underway Unfortunately no address provided H Evanston says club has three winches sod farm about ten miles south Minneapolis Activities designed around family cant find sod farm look up Evan stons claim hour 30-minute flights Sailaire should draw attention Charles Spear secretary Triad Thermal Thumbers comes announcement forming club Winston Salem Greensboro High Point area North Carolina charter less year theyve already scheduled FAI quarter-finals hoping warrant LSF regional Contact Charles Spear 800 Holly Lane Mocksville NC 27028 Great Race III announced Ken Ward president SOAR heralded event first started 1976 has become annual classic will run conjuction Stand-off Scale contest race open AMA chartered club scheduled August 12 Stand-off Scale contest will beheld August 13 open AMA member details contact Bill Christian CD 1604 N Chestnut Arlington Hts IL 60004 League Silent flight Gordon Pearson LSF President comes news should interest sailplane flier world LSF National Tournament should say International Tourna ment will again held year traditional last weekend Augustthe 26th 27th Already least ten sites have chosen regionals plans underway additional tournaments foreign chapters exist will two-year program whereby percentage top scorers regions will eligible compete interna tional fly-off determine LSF Champion fly-off would scheduled 1979 Discussions underway extra-spe cial eventsthis 1979 contest whereby LSF member could fly potential event could greatest get-together soaring event-ever Details finalized will announced sent LSF members Dan Pruss Rt 2 Box 490 Plainfield IL 60544 RC Old Timer/Mathews continued page 27 thirties ROW free flight event Lake Hopatcong NJ published Air Trials flying old-timer models off water certainly has appeal us have access ponds lakes sure have lakes Kansas delightful way com bine picnic family outing favorite recreation Say again SAM still appears New Goldberg Retracts feature Coil main gear instead three Field re ports experts using Goldberg gear found Coil adequate increased firmness gear especially down-wind turns ground giving better takeoff landing control Carl Goldberg Models Inc 4735W Chicago Ave Chicago IL 60651 product review product review product review some confusion over legality glow engines RC Old-Timer events Glow engines completely legal SAM Radio-Assist events According latest ballot SAM member ship use glow engines free flight oldtimers prohibited changes sub mitted section III rejected membership quickly review vote noneSAM reader changes rules governing free flight events removal responsibility authentication design builder allowing two models per event Radio Control As sist changes 8 oz per sq ft whether ignition glow powered glow con verted-to-ignition engines require 225 sq wing area 10 cu dis placement outlawing pressure fuel systems rear-rotor engines tuned pipes Flight Rule changes Radio Assist Maximum time flights will five minutes overtime deducted En gine runs changed 20 seconds glow 40 seconds ignition Six attempts three officials attempt being flight under 40 seconds Timer will stop calling time 10 seconds prior max other rules remain printed Society Antique Modelers official rule book 1978 AMA 78-79 rule book rules now finalized can learn live regardless personal preferences would appear few RC Assist models devel oped over last few seasons built winter will require major modifi cations remain SAM legal Several performance gaps between sparkers glows have closed Hopefully new contest season will see ever increasing numbers entrants enjoying delightful aspect hobby-sport Ohlssons California Champion Pace maker Ohlsson name familiar anyone ever remote terest powered model aircraft Irwin partner Harry Rice produced tens thousands engines 1937 1955 era What may well known Irwin started business model kit California Record Holder first advertised MAN July 1936 featured Brown Jr drawings Ohlsson decided enter engine manufacturing business developing prototype engine felt need testing flight conditions Pace maker test bed new Min iature engine Feb 1937 issue MAN contains photo combina tion clearly illustrating radical departure then-standard beam engine mounts Pacemaker first model ever utilize radial motor mount Pacemaker kit immensely suc cessful California unique motor 88 Model Aviation product review product review product review KGL IAT L4 fu0aicc4 7th Annual / Pre-Season Radio System Check-up pcs Valid until May 15 1978 FULL TIME TECHNICIANS FACTORY TRAINED ST TEST EQUIPMENT NEW MODERN SHOP ONLY GENUINE FACTORY PARTS SFACTION GUARANTEED RE-SEASON SPECIAL ONLY $2495 pius postuqe Less AMA Coupon Repair Net Cost Perform Transmitter Battery Load Check Perform Transmitter Crystal Frequency Count Perform Receiver Battery Load Check Check Battery Charging Circuit Tune Transmitter R F Check Receiver Sensitivity & Adjust Align Receiver RF lF Stages Check Receiver Logic Align Transmitter Encoder Check Servo Stalled Motor Current Repair parts additional Check Servo Mechanics Adjust Servo Centering Perform System Servo Noise Check Shock Test Complete Airborne System Range Check System System Flight Test Necessary ~ae Kraft Great Lakes Inc 6787 Wales Ave PO Box 2182 North CantonOhio 11720 eii Mark Porter Dave Male 216 199-8310 og fte4o4ta/ dewcce BankAmericard Master Charge Welcome mount attractive cabin design lent itself variety cowl paint con figurations Ohisson won California State Fair Contest Sept 1937 large margin legend began Expressly developed new 30second-motor-run rules Pacemaker received maximum points judged engineering design Minia ture engine entered aeronaut ical display same fair received gold seal award hence name famous engine became Gold Seal Pacemaker construction con ventional exception dural wire wing tips empennage outlines would strongly recommend laminated basswood sheet outlines Spruce fuse lage members wing spars would excellent substitution changes Pacemaker would splendid choice seaplane events could delight ful sport model Under SAM rules maximum engine size would 40 cc 25 cu Time Target Events Trend Time-target precision events can great fun fine equalizers beginners experts Such events popularized West Coast prior WW II often including beauty craftsmanship points formula find amusing note back thermal events much popular East Coast mid-West events suitable small fields popular West Coast observes West Coast origin such popular thermal designs Pacemaker Mystery Man Winged Vict ory Westerner Dennyplane similar beauties Time-target appearance events also very popular England prior WWII witness Bowden Perpetual Trophy England also produced some designs strong esthetic appeal during era two outstanding examples being Vul can D H Russel Barnards Premier Lion Incidentally has picture either Id like use Old-Timer-of-the-Month subjects time-target events rapidly gaining popularity around country prominent factor desire somehow equalize disparities performance between ordinary popular pro totypes such Clippers Playboys equally appealing designs lack floating ability mentioned last column rules IS-minute precis sion used Houston group Other approaches considerable appeal Chicken Add em Up Chicken events employ 30-second motor run watch starting flier hands transmitter timer stopping takes grabs thing back Ten-minute maxs bonus points landing inside circle no time recorded off-field landings event can close much performance gap previously mentioned superior wind penetration flat-bottomed Clark Y airfoils offsetting floating ability traditional contest machines Add em Up has its objective 15-minute three-flight total flight time reduced second second single flight over 7 minutes Bonus points usually awarded landing inside designated circle again float ers no particular advantage unless contestant chooses spin out boomer crash inside circle Clarence Haught has mentioned col umn growing concern over nearly total domination Antique classes Clipper Mkll us have dis taste one-design trend Playboys producing Old Timer events need examine results nearly contest see trend early days SAM movement saw entries composed numerous diverse teresting designs much en joyed walking around playing what game no longer case current situation almost forces interested winning choose narrow band wide spectrum avail able choices Hopefully more SAM chapters will innovate events bring back some diversity design intro duce stronger element luck fun June1978 89 KRAFT S2495 500 $1995 Lets face folks AMA free flight RC glider events can provide fero cious competition anyone wants SAM events chance relaxation good fellowship importantly fun Painless Servo Mounts continuously perplexing problem converting Old Timer models radio has mounting servos fuselage frame sides Invariably end up using heavy maple motor-mount stock epoxied place sides cross members hold down servo tray Hardly neat light-weight method have recently used Ser-kit Buckeye Balsa 3330 Youngstown-Kingsville Road Cortland Oh 44410 find ideal oldtimer use consists two groved hard wood blocks 16 o tight-fitting rails slid adjusted fore aft optimum servo loca tion glued slots retained scraps left over cutting rails simple solution com plex problem Buckeye Balsa also has inventory sheet balsa balsa spruce strip 54 60 66 72 lengths Wood long lengths often needed construction really huge old timers avoid splicing Dee B Mathews 506 South Walnut Greensburg KS 67054 RC Pylon/Lane continued page 29 come event Nationals C B Enterprises has some success 800 sq Cosmic Wind design Scale Squadron Orange Coun ty California beginning get some interest going scale AT-6 Texan class AT-6 800 sq class thereabouts hope guys have ap parently upset February March articles will understand now am trying downgrade QM Formula look around people have dropped out QM Formula primary reasons planes going too fast cost too much know thats what racing about think its too bad events end up pros reaping benefits seems should room anyone wants compete QM Formula coming dead last time Hopefully have made model ers irate article think have aware average modelers would like compete other one-class racing limited design aircraft Hey guys Chicago area Mr Justice 1816 N Mozart Chicago IL would like get pylon racing wife Debra wishes caller wants know about duties caller about contacting Justices give some pointers racing am sure would appreciate have copy MNPRA manual published several years ago Debra would like read winner Reno Air Races last year entry American Air Rac ing Teams Top Turkey Figure three view what looked like ship modified Shoestring design Next month will have 3-view Team Tur keys new ship called Wild Turkey Dave Lane 447 W 136th St Haw thorne CA 90250 Make Props/de Bolt continued page 33 speak force applied pro peller As propeller works creates thrust force transmitted aircraft through blade material via engine shaft thrust would also have center line force Thrust result combi nation lift developed airfoil upper curve fan effect off bottom blade would line resultant between So resultant line thrust could parallel mechanical line thrust tip hub Ideally two lines thrust would same loca tion chord-wise torsional rotational force set up would tend rotate blade about mechanical line force can make variations stan dard design top view blade can approach ideal position lines force diagram No 3 show thrust line force can product review product review product review Pactra Aero-Poxy Pactra offers new line specially formulated 2-component system finishes Aero-Poxy tough fuel-proof marresistant one-coat armour finish designed endure rough handling fuel spillage unique formulation utilizes non-irritating non-sensitizing curing agent elimi nates dermatitic respiratory problems Aero-Poxy free lead hazards nontoxic dry Available colors gloss clear primer 8 oz onlyl choice Super Hi-Gloss Catalyst Flat Catalyst versatility finish color-mixing capabili ties Suitable brush spray Available 4- 8-oz cans plus thinners brushing spray 16- 32-oz cans Pactra Indus tries 7060 Hollywood Blvd Los Angeles CA 90028 product review product review product review 90 Model Aviation Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground GREATEST B/C BASIC TRAINEB Design & Kit ALL TIME Ask over 25000 satisfied builders H-BAY dealers sold themSHALL WE SAY MORE Andrews Aircraft Model Co Inc US Rte 1& North Sc Topsfield Mass 01983 887-8541 Price $3995 kit pee dollar- bar em all
Edition: Model Aviation - 1978/06
Page Numbers: 26, 27, 88, 89, 90
Radio Control OlctTirners Dee Mathews AS MANY aware several sys tems have developed replace raditional make-and-break points used spark-ignition model engines published far complex requiring electronic skills beyond us --F-I IRWIN OHLSSONS PACEMAKER SPAN 68 /2 CHORD 0 GOLD SEAL 60 SAM RULES MAX GLOW 3Ocuin 0 I 2 3 4 5 6 7 5 9 10 months have following closely development pre-built com mercially available system hoping would become available Well friends now can announced quote letter received Otto Bernhardts 77 Products transistorized ignition system al lows fly RC model ig nition engine eliminates elec trical noises generated ignition sys tem radio gear affected electrical noise unshielded igni tion system such used free flight can make radio go crazy unit intended RC modeler would like operate model aircraft 0 engine gasoline oil instead glow fuel take advantage economy reduced fuel costs associated ignition transistorized ignition system complete ready install includes ignition coil assembly switch assem bly shielded high-tension lead battery pack charger special thin wall T-handle socket wrench battery charger will furnished match battery size preference Other details 250-mah pack will give 20- 25-minute motor run l2-ah pack will run engine long 1 2 hours Sizes l/ dia X 2Ys long coil 1 3/16 X 1 1/16 switch-charger jack assembly 11/16 26 Model Aviation both feet off ground Paul King Sets free Miss America Bert Stiegler snapped gaggle famous oldies Ito R Powerhouse three Playboy Seniors Comet Sailplane Buzzard Bombshell Like hawks summers day picture riding air currents simultaneously oldtimersnotably pylon jobsonce thought hopeless RC subjects Owen Morris pic Climbing Out JSC/RCC R/C Oldtimer contest Houston Bob Elliotts EK Productal Taibi Powerhouse urged along its muffled ST 35 engine Its 114 license AMA Life member number 14 Bob has beenflying radiofrom its beginning Photograph Owen Morris A 250-mab battery pack Weights 9 oz total 250-mah set up 12 oz 12 ah Price writing $8500 plus $625 optional charger further details delivery date contact 77 Products 17119 So Harvard Blvd Gardena CA 90247 Otto recently underwent open-heart surgery anticipate delay delivery 6 8 weeks Presuming quality workmanship evidenced Ottos OS Max ignition coversions will also pres ent new TLS can hardly wait get others developing commercial TIS unit please advise us might share information readers unbelievable prices glow fuel future may well see more gasoline oil used phases mod eling Since gasoline contains much energy per ounce methanol some extra weight TIS can made up using smaller tank Coyle What Zone 12th Annual SAM Champs will held July 25-27 National Guard Coyle Drop Zone New Jersey Coyle approximately 4 miles northwest intersection routes 539 72 20 miles southwest Lake hurst NAS site reported abandoned WW II fighter field gravel runways ample open area easy retrieval via motorbike Contest manager Woody Woodman 389 Floral Lane Saddle Brook NJ 07662 R/C director Tom Knakal 7 Seneca Ave Lake Hiawatha NJ 07034 Coyle 45 minutes Atlantic City its famous boardwalk bring family Combine vacation SAM Champs Old Timer ROW quote Ted Kafer SAM 21 newsletter After eight days steady rain northern California advent old-timer seaplane meet fun fly may become reality John Pond also makes tongue cheek sug gestion such event Model Builder column Well gentlemen R Kreunzinger Salem would like enter added pair 33 Gee Bee floats 40 engine 2-year-old Kloud King MA plan #103 finds excellent seaplane says light wing loading dihedral bother rough water takeoffs under calm conditions nice gentle performer off water Now application didnt have mind drew up sure sounds like fun brings up intriguing question ROW event prior 1942 cannot find evidence ROW events pre-war Nationals ever run local contests Some real oldtimers speak up Id welcome correspondence subject would ecstatic over photos share everyone EditorWe remember late Continued page 88 Helmer Johnsons Playboy Senior doing what comes naturally know Fort Worth Thunderbird See decal Poetic pose caught Owen Morris same Houston contest Docs own Kloud King plan No 103 probably popular non-kit th land 200-mm telephoto Dave Marsh caught RA Kreuzingers OS 4ORC version just leaviig water requires 40-ft run its 33 Gee Bee floats Mr K has enjoyed bird two years WORLD S LARGEST MASTER MODELS ASS T GIANTS OF flOUT 5-10 FT SPANS Catalog Subscription SI Br $110 ley Check Same Thee n Plan Too went end need yocr neppoct O en) whot new nwvbovs oth sinc weve becene o ocliente 4eeiuu service orgoujeettee deolon ceppovt ~ecO5 98 Lcd Hcdoe Rueck $49 4DuuIittlucGee B.545-77 Flying Feet 8- 70 $30 58 Sepeeeo6eeSdo$20103 FyngFoctR- 7G $49 62 Hwveet Ike Roe82345 66 teococd R-26 $39 78 Plc We8deII-Weo$3949 mock Widcw P81 $26 66 0 H Conet EecSitpo Clock Wduc P81 $69 62 26 Molligon$66 Jenknrv JUtO Olt 74 Poecc Openiel$395$ H-P 0400 Ho 4 P0830 81 Mesqcitn Oqn 633$34100 H P 0400 PG 042 55 Hooth Roby Rclet522-81 Fekket 0-8 Pu 930 58 ltocckr M-5 leo Pu$1478 Sopoc tie Pop Pu $25 70 Boyle 000-Ie83945 B-W 8td-Opv $29 62 Cuttiw Hawk P6-E$39107 Mortlt MR-I Conk 66 Curt Slvthe A-S$3266 Ceeclrut 0-Ill Ole $10. 60 Dougloc 0-39 Ole$1561 AEG 09 $otekv $18 71 MevOt C-tO Rosek53058 Soleowe 3A2 $15 62 Skyvoukof XP5P$1682 0nnov-Och DIV $30 57 CetOLceSO3C-t$151160o6eo 89 Rveeker 049 IlOOPtANS LABLE vided eliminate high speed flier desires Bill further claims Hi Flight 12 consists rugged-welded steel frame completely rebuilt 12-volt motor finely machined steel drum two inch core electrics necessary its operation Included Hi Flight 12 ballbearing turn-around price en tire Hi Flight 12 launch system $17900 FOB Hemet California winch also available kit form $8900 get welded frame drilled Complete instructions showing assembly wiring included Re built long-shaft starters also available $2250 winch drums $2495 Write Hi Flight Model Products 43225 Whittier Ave Hemet CA 92434Phone 714 927-4666 Milwaukee Minneapolis Winston-Salem Three areas soaring growing reported first Ron Kopp Mil waukee Suds City Sailplane Team amicable split power club doing own youre area contact Ron Kopp 8010 WWaterford Ave Milwaukee WI 53220 Minneapolis comes news Minnesota Soaring Team well underway Unfortunately no address provided H Evanston says club has three winches sod farm about ten miles south Minneapolis Activities designed around family cant find sod farm look up Evan stons claim hour 30-minute flights Sailaire should draw attention Charles Spear secretary Triad Thermal Thumbers comes announcement forming club Winston Salem Greensboro High Point area North Carolina charter less year theyve already scheduled FAI quarter-finals hoping warrant LSF regional Contact Charles Spear 800 Holly Lane Mocksville NC 27028 Great Race III announced Ken Ward president SOAR heralded event first started 1976 has become annual classic will run conjuction Stand-off Scale contest race open AMA chartered club scheduled August 12 Stand-off Scale contest will beheld August 13 open AMA member details contact Bill Christian CD 1604 N Chestnut Arlington Hts IL 60004 League Silent flight Gordon Pearson LSF President comes news should interest sailplane flier world LSF National Tournament should say International Tourna ment will again held year traditional last weekend Augustthe 26th 27th Already least ten sites have chosen regionals plans underway additional tournaments foreign chapters exist will two-year program whereby percentage top scorers regions will eligible compete interna tional fly-off determine LSF Champion fly-off would scheduled 1979 Discussions underway extra-spe cial eventsthis 1979 contest whereby LSF member could fly potential event could greatest get-together soaring event-ever Details finalized will announced sent LSF members Dan Pruss Rt 2 Box 490 Plainfield IL 60544 RC Old Timer/Mathews continued page 27 thirties ROW free flight event Lake Hopatcong NJ published Air Trials flying old-timer models off water certainly has appeal us have access ponds lakes sure have lakes Kansas delightful way com bine picnic family outing favorite recreation Say again SAM still appears New Goldberg Retracts feature Coil main gear instead three Field re ports experts using Goldberg gear found Coil adequate increased firmness gear especially down-wind turns ground giving better takeoff landing control Carl Goldberg Models Inc 4735W Chicago Ave Chicago IL 60651 product review product review product review some confusion over legality glow engines RC Old-Timer events Glow engines completely legal SAM Radio-Assist events According latest ballot SAM member ship use glow engines free flight oldtimers prohibited changes sub mitted section III rejected membership quickly review vote noneSAM reader changes rules governing free flight events removal responsibility authentication design builder allowing two models per event Radio Control As sist changes 8 oz per sq ft whether ignition glow powered glow con verted-to-ignition engines require 225 sq wing area 10 cu dis placement outlawing pressure fuel systems rear-rotor engines tuned pipes Flight Rule changes Radio Assist Maximum time flights will five minutes overtime deducted En gine runs changed 20 seconds glow 40 seconds ignition Six attempts three officials attempt being flight under 40 seconds Timer will stop calling time 10 seconds prior max other rules remain printed Society Antique Modelers official rule book 1978 AMA 78-79 rule book rules now finalized can learn live regardless personal preferences would appear few RC Assist models devel oped over last few seasons built winter will require major modifi cations remain SAM legal Several performance gaps between sparkers glows have closed Hopefully new contest season will see ever increasing numbers entrants enjoying delightful aspect hobby-sport Ohlssons California Champion Pace maker Ohlsson name familiar anyone ever remote terest powered model aircraft Irwin partner Harry Rice produced tens thousands engines 1937 1955 era What may well known Irwin started business model kit California Record Holder first advertised MAN July 1936 featured Brown Jr drawings Ohlsson decided enter engine manufacturing business developing prototype engine felt need testing flight conditions Pace maker test bed new Min iature engine Feb 1937 issue MAN contains photo combina tion clearly illustrating radical departure then-standard beam engine mounts Pacemaker first model ever utilize radial motor mount Pacemaker kit immensely suc cessful California unique motor 88 Model Aviation product review product review product review KGL IAT L4 fu0aicc4 7th Annual / Pre-Season Radio System Check-up pcs Valid until May 15 1978 FULL TIME TECHNICIANS FACTORY TRAINED ST TEST EQUIPMENT NEW MODERN SHOP ONLY GENUINE FACTORY PARTS SFACTION GUARANTEED RE-SEASON SPECIAL ONLY $2495 pius postuqe Less AMA Coupon Repair Net Cost Perform Transmitter Battery Load Check Perform Transmitter Crystal Frequency Count Perform Receiver Battery Load Check Check Battery Charging Circuit Tune Transmitter R F Check Receiver Sensitivity & Adjust Align Receiver RF lF Stages Check Receiver Logic Align Transmitter Encoder Check Servo Stalled Motor Current Repair parts additional Check Servo Mechanics Adjust Servo Centering Perform System Servo Noise Check Shock Test Complete Airborne System Range Check System System Flight Test Necessary ~ae Kraft Great Lakes Inc 6787 Wales Ave PO Box 2182 North CantonOhio 11720 eii Mark Porter Dave Male 216 199-8310 og fte4o4ta/ dewcce BankAmericard Master Charge Welcome mount attractive cabin design lent itself variety cowl paint con figurations Ohisson won California State Fair Contest Sept 1937 large margin legend began Expressly developed new 30second-motor-run rules Pacemaker received maximum points judged engineering design Minia ture engine entered aeronaut ical display same fair received gold seal award hence name famous engine became Gold Seal Pacemaker construction con ventional exception dural wire wing tips empennage outlines would strongly recommend laminated basswood sheet outlines Spruce fuse lage members wing spars would excellent substitution changes Pacemaker would splendid choice seaplane events could delight ful sport model Under SAM rules maximum engine size would 40 cc 25 cu Time Target Events Trend Time-target precision events can great fun fine equalizers beginners experts Such events popularized West Coast prior WW II often including beauty craftsmanship points formula find amusing note back thermal events much popular East Coast mid-West events suitable small fields popular West Coast observes West Coast origin such popular thermal designs Pacemaker Mystery Man Winged Vict ory Westerner Dennyplane similar beauties Time-target appearance events also very popular England prior WWII witness Bowden Perpetual Trophy England also produced some designs strong esthetic appeal during era two outstanding examples being Vul can D H Russel Barnards Premier Lion Incidentally has picture either Id like use Old-Timer-of-the-Month subjects time-target events rapidly gaining popularity around country prominent factor desire somehow equalize disparities performance between ordinary popular pro totypes such Clippers Playboys equally appealing designs lack floating ability mentioned last column rules IS-minute precis sion used Houston group Other approaches considerable appeal Chicken Add em Up Chicken events employ 30-second motor run watch starting flier hands transmitter timer stopping takes grabs thing back Ten-minute maxs bonus points landing inside circle no time recorded off-field landings event can close much performance gap previously mentioned superior wind penetration flat-bottomed Clark Y airfoils offsetting floating ability traditional contest machines Add em Up has its objective 15-minute three-flight total flight time reduced second second single flight over 7 minutes Bonus points usually awarded landing inside designated circle again float ers no particular advantage unless contestant chooses spin out boomer crash inside circle Clarence Haught has mentioned col umn growing concern over nearly total domination Antique classes Clipper Mkll us have dis taste one-design trend Playboys producing Old Timer events need examine results nearly contest see trend early days SAM movement saw entries composed numerous diverse teresting designs much en joyed walking around playing what game no longer case current situation almost forces interested winning choose narrow band wide spectrum avail able choices Hopefully more SAM chapters will innovate events bring back some diversity design intro duce stronger element luck fun June1978 89 KRAFT S2495 500 $1995 Lets face folks AMA free flight RC glider events can provide fero cious competition anyone wants SAM events chance relaxation good fellowship importantly fun Painless Servo Mounts continuously perplexing problem converting Old Timer models radio has mounting servos fuselage frame sides Invariably end up using heavy maple motor-mount stock epoxied place sides cross members hold down servo tray Hardly neat light-weight method have recently used Ser-kit Buckeye Balsa 3330 Youngstown-Kingsville Road Cortland Oh 44410 find ideal oldtimer use consists two groved hard wood blocks 16 o tight-fitting rails slid adjusted fore aft optimum servo loca tion glued slots retained scraps left over cutting rails simple solution com plex problem Buckeye Balsa also has inventory sheet balsa balsa spruce strip 54 60 66 72 lengths Wood long lengths often needed construction really huge old timers avoid splicing Dee B Mathews 506 South Walnut Greensburg KS 67054 RC Pylon/Lane continued page 29 come event Nationals C B Enterprises has some success 800 sq Cosmic Wind design Scale Squadron Orange Coun ty California beginning get some interest going scale AT-6 Texan class AT-6 800 sq class thereabouts hope guys have ap parently upset February March articles will understand now am trying downgrade QM Formula look around people have dropped out QM Formula primary reasons planes going too fast cost too much know thats what racing about think its too bad events end up pros reaping benefits seems should room anyone wants compete QM Formula coming dead last time Hopefully have made model ers irate article think have aware average modelers would like compete other one-class racing limited design aircraft Hey guys Chicago area Mr Justice 1816 N Mozart Chicago IL would like get pylon racing wife Debra wishes caller wants know about duties caller about contacting Justices give some pointers racing am sure would appreciate have copy MNPRA manual published several years ago Debra would like read winner Reno Air Races last year entry American Air Rac ing Teams Top Turkey Figure three view what looked like ship modified Shoestring design Next month will have 3-view Team Tur keys new ship called Wild Turkey Dave Lane 447 W 136th St Haw thorne CA 90250 Make Props/de Bolt continued page 33 speak force applied pro peller As propeller works creates thrust force transmitted aircraft through blade material via engine shaft thrust would also have center line force Thrust result combi nation lift developed airfoil upper curve fan effect off bottom blade would line resultant between So resultant line thrust could parallel mechanical line thrust tip hub Ideally two lines thrust would same loca tion chord-wise torsional rotational force set up would tend rotate blade about mechanical line force can make variations stan dard design top view blade can approach ideal position lines force diagram No 3 show thrust line force can product review product review product review Pactra Aero-Poxy Pactra offers new line specially formulated 2-component system finishes Aero-Poxy tough fuel-proof marresistant one-coat armour finish designed endure rough handling fuel spillage unique formulation utilizes non-irritating non-sensitizing curing agent elimi nates dermatitic respiratory problems Aero-Poxy free lead hazards nontoxic dry Available colors gloss clear primer 8 oz onlyl choice Super Hi-Gloss Catalyst Flat Catalyst versatility finish color-mixing capabili ties Suitable brush spray Available 4- 8-oz cans plus thinners brushing spray 16- 32-oz cans Pactra Indus tries 7060 Hollywood Blvd Los Angeles CA 90028 product review product review product review 90 Model Aviation Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground GREATEST B/C BASIC TRAINEB Design & Kit ALL TIME Ask over 25000 satisfied builders H-BAY dealers sold themSHALL WE SAY MORE Andrews Aircraft Model Co Inc US Rte 1& North Sc Topsfield Mass 01983 887-8541 Price $3995 kit pee dollar- bar em all