Edition: Model Aviation - 1982/12
Page Numbers: 10, 12

All letters will carefully considered general interest used Send Model Aviation 815 15th St NW Washington DC 20005 CDI Ignition Systems Due recent interest CDI capacitor discharge ignition systems thought would let know about experiences About 12 years ago after seeing ads CDIs motorcycles decided try ads sounded just like now low power consumption fires fouled plug no points least minimal current through existing points etc system purchased manufactured Sydmur Being familiar bikes es pecially electronics installed easily Problems turned up right away like occasional hard starting stopping cylinder no apparent reason consulted manufact urer suggestion purchase new set automotive coils thinking stock coils bike breaking down under extra voltage Two new ccils did help After much costiy experimenting finally decided cause short duration spark system stuck box shoved cornerand standard ignition reinstalled bike course no way tell theory correct until recently May 1981 issue Cycle magazine article igni tion systems came same conclu sion have enclosed copy portion article pertaining CDI systems Kawasaki about same time came out three-cylinder 500cc two-cycle bike came CDI standard surface-gap plugs Soon surface-gap plugs went standard plugs recommended whole CDI went favor conven tional system seems CDI will work conditions correct after hassle went through am convinced cure-all theyre supposed Brian K Grim Lenhartsville PA printed article Jack Finn Cedar Rapids Skyhawks team estab lished RC Duration World Record 16 hours 43 minutes engine using CDI system August 1982 issue printed article CDI system its developer Emil Svercl called Emil respond Brian correct CDI cure-all systems can have own set pit falls well designed integrated system needed take full advantage capaci tive discharge concept coil needs ratio approximately 200-to-i ferrite core responds short electrical pulse rapid magnetic buildup conventional coil about 400-to-l its heavy iron core gives slow magnetic response short elec trical pulse characteristics discharging capacitor high-tension wire must low capac ity will absorb much energy goes coil end used rather fine inner wire low-capacity insulation about 25% energy input needed full high-tension shielding added Keeping mind principles outlined August 1982 MA article reliable very efficient system can constructed However some applications conventional system may better choice Emil Svercl Cedar Rapids IA Bull Horns Pulled Off Central Connecticut RC Club President Richard Belanger relaxed ease phone started ringing answered usual hello listened carefully gulped few times said Can bet can caller program director PM Magazine nationally-syndicated TV pro gram N Dick bull horns because wanted club demonstrate RC flying camerasand wanted done follow ing Wednesday just five days try con vince members take afternoon off work Would bosses okay time off guy go fly models Dick put hours frantic phone calling alert members nothing would pos itive until afternoon filming Continued page 12 10 Model Aviation Stainless Stel etters t6e cd1tcr HARD WARE Hemember Aerotrend source fine modeling hardware also offer complete line wood fiber glass field caddies other acces sories Send SASE free catalog todayOFALERS INVITED ERO TREND PRODUCTS 44W Prospect St New Haven CT06515 Tele 203-397-3755 Just Dont Have Time Build Nice Scale Airplane Let Us Help offering T-6 SNJ Harvard feel has scale features molded rigid eurathane foam available other RIC kit anywhere Also should able complete painting assembly equipment installation less week Send self addressed envelope brochure Many Extras $22800 Specify TGG Canopy Classic Canopy Specify Harvard Send Check Money Order Include $1000 UPS Overage refunded Michigan Residents Add 4% Sales Tax WILLIAMS ACCESSORIES BROTHERS 4 PILOTS STANDARD TSMAN RACING TARY WHEELS AGE TH CONTOUR BALLOON EN AGE 4 ENGINES PRATT & WHITNEY HT HONE Results biggest turnout event club ever has Talk about prideevery body brought planeor two must have 40 ready-to-go planes pits fore noontime PMs truck showed up around three oclocktwo hours late no griped PM Magazine director pre-flight meeting see could fly wayaero batics balloon busting ribbon cuttings general takeoffs/landings few fly-bys thrown Keith Palmer chosen balloon bust must have made 10 passes camera Quickee 500 Bob Joslyn got task flying directly camera lens dramatic head-on shot Dick Hassick pulled off aerobatics portion program some superb stick smashing whole program filming took about three hoursand would cut about six minutes showing lot hard work well worth film has aired several times pride Central Connecticut group Bud Gay Bristol CT Printed several pictures M filming sent us Spirit St Louis shown two pictures belongs Bud Gay built Royal kit Cata lina model belongs Leon Kusik planein to-the-camera takeoff performed Sportmaster being flown Bob Joslyn Photos Bud Gay Its nice whenever modeling can shown favorable way especially before PM Maga zincs large audience 1 2 Model Aviation Great Lakes Model & Mold Company PO Box 308 Tawas City MI 48763 --517-362-6078 633/8 Span 1 /2 Scale 60 Size Engine PARTS T & WHITNEY HONE WRIGHT E -GUNS LEWISVICKERS DAU BELLUM $1 FOR FULLY ILLUSTRATED CATALOG ST SAN MARCOS CALIFORNIA 92069
Edition: Model Aviation - 1982/12
Page Numbers: 10, 12

All letters will carefully considered general interest used Send Model Aviation 815 15th St NW Washington DC 20005 CDI Ignition Systems Due recent interest CDI capacitor discharge ignition systems thought would let know about experiences About 12 years ago after seeing ads CDIs motorcycles decided try ads sounded just like now low power consumption fires fouled plug no points least minimal current through existing points etc system purchased manufactured Sydmur Being familiar bikes es pecially electronics installed easily Problems turned up right away like occasional hard starting stopping cylinder no apparent reason consulted manufact urer suggestion purchase new set automotive coils thinking stock coils bike breaking down under extra voltage Two new ccils did help After much costiy experimenting finally decided cause short duration spark system stuck box shoved cornerand standard ignition reinstalled bike course no way tell theory correct until recently May 1981 issue Cycle magazine article igni tion systems came same conclu sion have enclosed copy portion article pertaining CDI systems Kawasaki about same time came out three-cylinder 500cc two-cycle bike came CDI standard surface-gap plugs Soon surface-gap plugs went standard plugs recommended whole CDI went favor conven tional system seems CDI will work conditions correct after hassle went through am convinced cure-all theyre supposed Brian K Grim Lenhartsville PA printed article Jack Finn Cedar Rapids Skyhawks team estab lished RC Duration World Record 16 hours 43 minutes engine using CDI system August 1982 issue printed article CDI system its developer Emil Svercl called Emil respond Brian correct CDI cure-all systems can have own set pit falls well designed integrated system needed take full advantage capaci tive discharge concept coil needs ratio approximately 200-to-i ferrite core responds short electrical pulse rapid magnetic buildup conventional coil about 400-to-l its heavy iron core gives slow magnetic response short elec trical pulse characteristics discharging capacitor high-tension wire must low capac ity will absorb much energy goes coil end used rather fine inner wire low-capacity insulation about 25% energy input needed full high-tension shielding added Keeping mind principles outlined August 1982 MA article reliable very efficient system can constructed However some applications conventional system may better choice Emil Svercl Cedar Rapids IA Bull Horns Pulled Off Central Connecticut RC Club President Richard Belanger relaxed ease phone started ringing answered usual hello listened carefully gulped few times said Can bet can caller program director PM Magazine nationally-syndicated TV pro gram N Dick bull horns because wanted club demonstrate RC flying camerasand wanted done follow ing Wednesday just five days try con vince members take afternoon off work Would bosses okay time off guy go fly models Dick put hours frantic phone calling alert members nothing would pos itive until afternoon filming Continued page 12 10 Model Aviation Stainless Stel etters t6e cd1tcr HARD WARE Hemember Aerotrend source fine modeling hardware also offer complete line wood fiber glass field caddies other acces sories Send SASE free catalog todayOFALERS INVITED ERO TREND PRODUCTS 44W Prospect St New Haven CT06515 Tele 203-397-3755 Just Dont Have Time Build Nice Scale Airplane Let Us Help offering T-6 SNJ Harvard feel has scale features molded rigid eurathane foam available other RIC kit anywhere Also should able complete painting assembly equipment installation less week Send self addressed envelope brochure Many Extras $22800 Specify TGG Canopy Classic Canopy Specify Harvard Send Check Money Order Include $1000 UPS Overage refunded Michigan Residents Add 4% Sales Tax WILLIAMS ACCESSORIES BROTHERS 4 PILOTS STANDARD TSMAN RACING TARY WHEELS AGE TH CONTOUR BALLOON EN AGE 4 ENGINES PRATT & WHITNEY HT HONE Results biggest turnout event club ever has Talk about prideevery body brought planeor two must have 40 ready-to-go planes pits fore noontime PMs truck showed up around three oclocktwo hours late no griped PM Magazine director pre-flight meeting see could fly wayaero batics balloon busting ribbon cuttings general takeoffs/landings few fly-bys thrown Keith Palmer chosen balloon bust must have made 10 passes camera Quickee 500 Bob Joslyn got task flying directly camera lens dramatic head-on shot Dick Hassick pulled off aerobatics portion program some superb stick smashing whole program filming took about three hoursand would cut about six minutes showing lot hard work well worth film has aired several times pride Central Connecticut group Bud Gay Bristol CT Printed several pictures M filming sent us Spirit St Louis shown two pictures belongs Bud Gay built Royal kit Cata lina model belongs Leon Kusik planein to-the-camera takeoff performed Sportmaster being flown Bob Joslyn Photos Bud Gay Its nice whenever modeling can shown favorable way especially before PM Maga zincs large audience 1 2 Model Aviation Great Lakes Model & Mold Company PO Box 308 Tawas City MI 48763 --517-362-6078 633/8 Span 1 /2 Scale 60 Size Engine PARTS T & WHITNEY HONE WRIGHT E -GUNS LEWISVICKERS DAU BELLUM $1 FOR FULLY ILLUSTRATED CATALOG ST SAN MARCOS CALIFORNIA 92069