FAST RAT WING construction have several requests concerning construc tion Fast Rat wing will durable flight will support ag gressive grabs during pit stops under racing conditions early eighties wings fabricated piece ultra light 3R bass wood inner section bass wood cut out slotted wires air foil shaped requirements Most wings saw early days Clark-Y flat airfoil bottom present day Rat racers generally uti lize 60%-40% airfoil construc tion aircraft laminated hard balsa Kevlar reinforcement lead ing trailing edges spar areas month have enclosed photo Larry Dziaks Fast Rat racer showing construction balsa wing will note five-ply plywood used cen ter section tapered crutch prevent wing flexing during high speed hard wood center section absolutely manda tory hold-down screws used area Some crutches tapered point half way down wing tip have seen several competitors run tapered crutch out farther added stiffness leading trailing edges hard wood sanded airfoil laminating two pieces balsa wood slotting can accomplished Use either Kevlar half-ounce Fiberglas cloth rein forcement after sanding shape strong durable wing Half Racing handle As entry level competitors aware small easily adjust able 1AA racing handle almost non-existent Bill Bischoff Terry Kirby have sent drawing handle several us have constructed found quite usable merely used some scrap maple motor mount stock drilled holes cable installed adjustment screw actually sanded edges off motor mount stock make little smoother hold pilots hand addition coated clear epoxy included red paint top end pre vent picking up handle controls reversed quite inexpensive unit have enclosed simple drawing handle observation Aerospace composite news release nofray carbon fiber tape Dallas TX Racing Heres photograph Texas contingent flying Foxberg Rac ing Final Left right Harold Sprague just taking off Mike Greb Bill Bischoff hat already working models Bill appears resisting Mikes passing efforts particular facilities have very nice phalt flying circle concrete pad grass peripheral areas Continued page 106 1/2A RACING HANDLE Bill Bischofl/Terry Kirby K 2 027 braided cable Make up ends similar lines leadouts T Paint Top Red 4- Paint clear over Drill 1/16 holes cable 4 Wood screw & washer clamps cable place Maple motor mount stock 1/2 x 3/8 x 3-1/2 Round edges desired Put screw eye bottom safety thong desired left Harold Sprague Mike Greb Biii Bischoff fiy Foxberg Racer Dalias Texas contest right isa Biachoff/Kirby drawing Haif racing handie 46 Model Aviation Confrol Line Racing John Ballard 10102 Kimbiewlck Dr Louisvlik KY 40223 underside Larry Oziaks Fast Rat shows baisa inlaid hardwood con struction Z-Poxy Z five minute material low viscos ity penetration takes care snarled onfield repairs Reinforcing- TisJuo Carbon Fib r Stock No DescriptionI PriceOWAmount III____ I --I Check order orI HANDLING CHARGE Credit Card order COD Order I\INo handling charge/USA order over ssoootTOTAL Handling charge Foreign Orders actoal pootage pivo $500 will hold yoar order ly once $ amoant needed shipping Street Address__________ _____ EMasterCard EVisa EAmerExp UDiscover Exp Date______ EShip COD EMy Check enclosed $ ElJust send FREE catalog MA il HOWW BD INTERNATIONAL INC 5614 FRANKLIN PIKE CIRCLE BRENTWOOD TN 37027 615 373-1444 Fax 615 377-6948 Sub Total 73/4% Tax TN Only Handling StateZip WI ndsocklBeshar Continued page 103 pole mount shown cut %-in diameter dowel tapered will fit inside piece 3A-in schedule 40 standard pipe have found ideal material pole pole mount ever can constructed accommodate size pole used Drill Y6-in-diameter hole through center pole mount shown drawing Insert two %-in-long 346-indiameter hollow brass rivets hole top bottom pole mount glue place cyano act bearings Two same type hollow rivets also cyano-glued top bottom bearing blocks fuselage axis rod A-in-diameter steel rod installed bent top bottom retention shown drawing serves central pivot fuse lage assembly wing elevator assembled through fuselage slots epoxied place Next A-in hex bolt 1 long x 20 threads serves propeller shaft Three steel flat washers serve thrust bearings Assemble latter items shown epoxy A-in hex-head bolt shaft bearing block being careful overtighten bolt will prevent propeller turning freely Also get epoxy washers and/or propel ler hub remains trim model insignia wings colors de sired trust will enjoy build ing Wind Direction Finder will also refer club field choosing direction takeoffs landings hope fliers spectators will enjoy much weve enjoyed E RC Helicopters/Jolly Continued page 45 OCRCHA provided frequency control including use scanner required safety inspec tion models very impressive fun fly around Thanks support local radio station nonmodeling types showed up view activities impressed both ma chines people What can said ex cept OCRCHA should very proud self positive image projects pub lic Onboard starters fun fly opportunity observe effective onboard starter use Produced Gary Coler Chuck Alessio system uses small electric motor onboard battery start engine demonstrated Concept 30 witnessed seven consecutive startups shutdowns systems having recharged system worked well Helicopter didnt seem notice additional weight interested contact Gary Chuck 818/999-3952 Ill trying near future Well wraps things up month Id like hear other clubs out maybe can publish some details activities way OCRCHA would like exchange news letters other Helicopter clubs Interested Contact Blade Flutter PO Box 18027 Anaheim CA 92817-8027 BCNU CL Racing/Ballard Continued page 46 During winter construction projects have found excellent carbon fiber tape does separate fray ends used extremely thin epoxy gives excellent reinforcing area wings stamp areas addition aerospace composite products company also makes no-fray carbon fibered tape can used strengthening no fray feature what makes product excellent infor mation samples write Aerospace Com posites Products PO Box 1621 Irvine CA 92714 714 250-1107 Z-Poxy recently received sample twocomponent five-minute epoxy Pacer TechnologyZ-Poxy black box pink print identifies very thin excellent penetrating five minute epoxy prob Continued page 117 106 Model Aviation CL Racing/Ballard Continued page 106 lem five-minute epoxies lack penetration Z-Poxy has low viscosity good penetration can avoid overly thin running problems Since does have some thixotropics cure response low temperatures excellent did some on-field repairs sons Mouse Racer found under cool on-field conditions gave us hard cure around fifteen minutes after applica tion cracked rudders andlor elevators like material much better hotstuff-type materials other heavy thixo tropic epoxies penetrate leave rather heavy residue surface addition material has good wetting light glass cloth should repair require patching excessive weight build-up over affected area As always comments photo graphs solicited D CL Aerobatics/McMillafl Continued page 48 ing measurements surfaces Ive completed Al though think Im reasonably accurate builder Ive found flaps dimensions never tended Apparently final shaping straight trailing edge hinge line sanding block just little heavy point should check last time make sure everything way think before applying paint new Caudron final check showed inboard flap over /i6 chord root outboard onea discrepancy could have caused some real funnies gone uncorrected lieve trying find out whats inducing roll can drive up wall change subject pure trim problems lets talk about lessons learned con struction details cardinal rule Ive got comfortable what example after observing evaluating different methods over years Ive evolved own way attaching cowlingsone like works best recommendation arriving good approach construction problem first look what youve experienced look best planes can find both new old CS COMPETITION ENGINES II CSG 049NORMAL ABC 28K RPM CSG 049SPEEDABC 35K RPM CSG 061NORMAL ABC 27K RPM CSG 061SPEEDABC 35K RPM CSG 09NORMAL ABC 27K RPM CSG 09SPEEDABC 36K RPM CSG 15PSPORTSEB 18K RPM CSG 15NORMAL ABC 27K RPM CSG 15SPEEDABC 37K RPM CSA 15SPEEDAAC 37K RPM CSD 15TR DIESELAAC 23K RPM CRC 15TEAM RACE CARB DIESEL CSG 2122BBABC18KRPM CSG 21SPEEDABC 28K RPM CSG 21NMARINE ABC 28K RPM CSG 6022BBABC2- 18KRPM CS1 TUNED PIPE 049-061 C59 TUNED PIPE 09 C52 TUNED PIPE 15-21-60 CSH GLOW PLUGS 049-15 CSR SPEED PAN 049-09 CSW SPEED PAN 15-21 CSP CARBON RACE OR FA PROPS ALL ENGINES ARE TEST RUN BEFORE THEY LEAVE THE FACTORY QUALITY OF WORKMANSHIP ANTY YOUNGSTERS SPECIAL SS 15 UC DIESEL $2775 CS iSP UC GLOW $4775 MUST BE UNDER 16 YEARS OLD FOR THIS SPECIAL PLEASE! $14200 $14900 $14200 $14600 $13700 $14200 $ 5500 $12900 $13900 $14900 $18900 $ 5900 $12900 $13900 $14900 $15500 $ 2900 $ 3100 $ 3900 $ 399 $ 3995 $ 4695 $ 1475 CH*6 WI Must have expiration date MWteCh,pbnkAmhr want design build durability want ship well crafted hold together Look such things seams fit ted Ask questions Are edges faced / ply Observe sides fair nicely have shrunk expanded method attaching cowl may have forced its side out over period time part Ive found best avoid applying pressure through single point against separa tion line Instead use four screws threaded hardwood points setting up pressure can applied points rather ing transmitted immediate cowl area As Ive said before good designs evolution ary best fliers carefully examine planes critique themselves technique struc ture Good designs made fly crash NEW HIGH PERFORMANCE HIGH TECH ENGINES FOR THE 90s ABC DUAL BALL BEARING SCHNUERLE RPM FIGURES ON PA FUEL 0 NITRO NITROGEN GAS HARDENED STEEL CRANK BRONZE BUSHED HIGH PERFORMANCE ALUMINUM ALLOY ROD CIRCLIP WRIST PIN MAT FINISHED ALUMINUM CRANKCASE FOR BETTER COOLING NEW HIGH TECH ENGINES FOR THE 90s! 21 MARINE & 80 2x2 COME WITH CARE ALL OTHER ENGINES EXCEPT 15TR COME WITH UC VENTURI & NEEDLE VALVE ASSEMBLY A & 15 ENGINES COME WITH BUTTONHEAD TYPE GLOW PLUG ALL ENGINES EXCEPT 1SP-15TR & 60 COME WITH ALUMINUM SPINNER THE 21N HAS GROOVE FOR BELT START NEW CS PULSE JET ENGINES ALL STAINLESS STEEL CONSTRUCTION NO MOVING PARTS TO WEAR OUT USE REGULAR GASOLINE EASY START SJP-1 26 LBS THRUST $18075 SJP-2 51 LBS THRUST $21575 NEW 15 COMBAT SPECIAL AND 40 QUICKEE 500 SPECIAL SEND IN YOUR REQUEST SEND NO MONEY YOU WILL BE NOTIFIED WHEN AVAILABLE SEND MAIL ORDERS TO CHEROKEE HILL SOUTH AERO ENGINES LTD 2914 BUCKLEY AVE LAKE WORTH FL 33461 407-965-6150 FROM 6PM TO 9PM EXCLUSIVE CS DISTRIBUTOR DEALER INQUIRIES INVITED SEND $500 FOR SHIPPING & HANDLING COD ADD $450 FLORIDA RESIDENTS ADD 6% SALES TAX CHECK OR MONEY ORDER particular structure isnt absolutely essen tial get out Dremel Ive seen Al Rage take Dremel tool spars after hed planked wing grind nothing outboard gear points can eliminate parts mass simply ing meticulous structural analysis stress points what components absorb strain Once thats done decide ne structure-whittling stepand go D Aerials OSOTE AS EACITOJO & PflOPIAARLE FCC AERIAL SYSTEM PROPESSIORACCA PMOOOCED DEOTAPE HAS ALL ISPORMOTIOS TO MAKE YOUR VENTURE ASOCCESS CAMERA Shoot Perfect1 RULES SSRALCOAION PAOPER SSSES SPECIALIZES AIRCYAPT AESISAS OPETTE AIOCRAPT MOOS CAMERA MOAOLE COASTRUCTIOR AMA ULCO STORE STIL CAMERA CAMCORDER AMA TRASSAUflEE TSISOES OEMOASTRATED MOW INALUOMS FOOTAME OF LARRY RTRAMKESA1AEARCANE REST AND MOST COM PLEAS PERFECT FOR MORMAISTOR PRO May1991 117
Edition: Model Aviation - 1991/05
Page Numbers: 46, 106, 117
FAST RAT WING construction have several requests concerning construc tion Fast Rat wing will durable flight will support ag gressive grabs during pit stops under racing conditions early eighties wings fabricated piece ultra light 3R bass wood inner section bass wood cut out slotted wires air foil shaped requirements Most wings saw early days Clark-Y flat airfoil bottom present day Rat racers generally uti lize 60%-40% airfoil construc tion aircraft laminated hard balsa Kevlar reinforcement lead ing trailing edges spar areas month have enclosed photo Larry Dziaks Fast Rat racer showing construction balsa wing will note five-ply plywood used cen ter section tapered crutch prevent wing flexing during high speed hard wood center section absolutely manda tory hold-down screws used area Some crutches tapered point half way down wing tip have seen several competitors run tapered crutch out farther added stiffness leading trailing edges hard wood sanded airfoil laminating two pieces balsa wood slotting can accomplished Use either Kevlar half-ounce Fiberglas cloth rein forcement after sanding shape strong durable wing Half Racing handle As entry level competitors aware small easily adjust able 1AA racing handle almost non-existent Bill Bischoff Terry Kirby have sent drawing handle several us have constructed found quite usable merely used some scrap maple motor mount stock drilled holes cable installed adjustment screw actually sanded edges off motor mount stock make little smoother hold pilots hand addition coated clear epoxy included red paint top end pre vent picking up handle controls reversed quite inexpensive unit have enclosed simple drawing handle observation Aerospace composite news release nofray carbon fiber tape Dallas TX Racing Heres photograph Texas contingent flying Foxberg Rac ing Final Left right Harold Sprague just taking off Mike Greb Bill Bischoff hat already working models Bill appears resisting Mikes passing efforts particular facilities have very nice phalt flying circle concrete pad grass peripheral areas Continued page 106 1/2A RACING HANDLE Bill Bischofl/Terry Kirby K 2 027 braided cable Make up ends similar lines leadouts T Paint Top Red 4- Paint clear over Drill 1/16 holes cable 4 Wood screw & washer clamps cable place Maple motor mount stock 1/2 x 3/8 x 3-1/2 Round edges desired Put screw eye bottom safety thong desired left Harold Sprague Mike Greb Biii Bischoff fiy Foxberg Racer Dalias Texas contest right isa Biachoff/Kirby drawing Haif racing handie 46 Model Aviation Confrol Line Racing John Ballard 10102 Kimbiewlck Dr Louisvlik KY 40223 underside Larry Oziaks Fast Rat shows baisa inlaid hardwood con struction Z-Poxy Z five minute material low viscos ity penetration takes care snarled onfield repairs Reinforcing- TisJuo Carbon Fib r Stock No DescriptionI PriceOWAmount III____ I --I Check order orI HANDLING CHARGE Credit Card order COD Order I\INo handling charge/USA order over ssoootTOTAL Handling charge Foreign Orders actoal pootage pivo $500 will hold yoar order ly once $ amoant needed shipping Street Address__________ _____ EMasterCard EVisa EAmerExp UDiscover Exp Date______ EShip COD EMy Check enclosed $ ElJust send FREE catalog MA il HOWW BD INTERNATIONAL INC 5614 FRANKLIN PIKE CIRCLE BRENTWOOD TN 37027 615 373-1444 Fax 615 377-6948 Sub Total 73/4% Tax TN Only Handling StateZip WI ndsocklBeshar Continued page 103 pole mount shown cut %-in diameter dowel tapered will fit inside piece 3A-in schedule 40 standard pipe have found ideal material pole pole mount ever can constructed accommodate size pole used Drill Y6-in-diameter hole through center pole mount shown drawing Insert two %-in-long 346-indiameter hollow brass rivets hole top bottom pole mount glue place cyano act bearings Two same type hollow rivets also cyano-glued top bottom bearing blocks fuselage axis rod A-in-diameter steel rod installed bent top bottom retention shown drawing serves central pivot fuse lage assembly wing elevator assembled through fuselage slots epoxied place Next A-in hex bolt 1 long x 20 threads serves propeller shaft Three steel flat washers serve thrust bearings Assemble latter items shown epoxy A-in hex-head bolt shaft bearing block being careful overtighten bolt will prevent propeller turning freely Also get epoxy washers and/or propel ler hub remains trim model insignia wings colors de sired trust will enjoy build ing Wind Direction Finder will also refer club field choosing direction takeoffs landings hope fliers spectators will enjoy much weve enjoyed E RC Helicopters/Jolly Continued page 45 OCRCHA provided frequency control including use scanner required safety inspec tion models very impressive fun fly around Thanks support local radio station nonmodeling types showed up view activities impressed both ma chines people What can said ex cept OCRCHA should very proud self positive image projects pub lic Onboard starters fun fly opportunity observe effective onboard starter use Produced Gary Coler Chuck Alessio system uses small electric motor onboard battery start engine demonstrated Concept 30 witnessed seven consecutive startups shutdowns systems having recharged system worked well Helicopter didnt seem notice additional weight interested contact Gary Chuck 818/999-3952 Ill trying near future Well wraps things up month Id like hear other clubs out maybe can publish some details activities way OCRCHA would like exchange news letters other Helicopter clubs Interested Contact Blade Flutter PO Box 18027 Anaheim CA 92817-8027 BCNU CL Racing/Ballard Continued page 46 During winter construction projects have found excellent carbon fiber tape does separate fray ends used extremely thin epoxy gives excellent reinforcing area wings stamp areas addition aerospace composite products company also makes no-fray carbon fibered tape can used strengthening no fray feature what makes product excellent infor mation samples write Aerospace Com posites Products PO Box 1621 Irvine CA 92714 714 250-1107 Z-Poxy recently received sample twocomponent five-minute epoxy Pacer TechnologyZ-Poxy black box pink print identifies very thin excellent penetrating five minute epoxy prob Continued page 117 106 Model Aviation CL Racing/Ballard Continued page 106 lem five-minute epoxies lack penetration Z-Poxy has low viscosity good penetration can avoid overly thin running problems Since does have some thixotropics cure response low temperatures excellent did some on-field repairs sons Mouse Racer found under cool on-field conditions gave us hard cure around fifteen minutes after applica tion cracked rudders andlor elevators like material much better hotstuff-type materials other heavy thixo tropic epoxies penetrate leave rather heavy residue surface addition material has good wetting light glass cloth should repair require patching excessive weight build-up over affected area As always comments photo graphs solicited D CL Aerobatics/McMillafl Continued page 48 ing measurements surfaces Ive completed Al though think Im reasonably accurate builder Ive found flaps dimensions never tended Apparently final shaping straight trailing edge hinge line sanding block just little heavy point should check last time make sure everything way think before applying paint new Caudron final check showed inboard flap over /i6 chord root outboard onea discrepancy could have caused some real funnies gone uncorrected lieve trying find out whats inducing roll can drive up wall change subject pure trim problems lets talk about lessons learned con struction details cardinal rule Ive got comfortable what example after observing evaluating different methods over years Ive evolved own way attaching cowlingsone like works best recommendation arriving good approach construction problem first look what youve experienced look best planes can find both new old CS COMPETITION ENGINES II CSG 049NORMAL ABC 28K RPM CSG 049SPEEDABC 35K RPM CSG 061NORMAL ABC 27K RPM CSG 061SPEEDABC 35K RPM CSG 09NORMAL ABC 27K RPM CSG 09SPEEDABC 36K RPM CSG 15PSPORTSEB 18K RPM CSG 15NORMAL ABC 27K RPM CSG 15SPEEDABC 37K RPM CSA 15SPEEDAAC 37K RPM CSD 15TR DIESELAAC 23K RPM CRC 15TEAM RACE CARB DIESEL CSG 2122BBABC18KRPM CSG 21SPEEDABC 28K RPM CSG 21NMARINE ABC 28K RPM CSG 6022BBABC2- 18KRPM CS1 TUNED PIPE 049-061 C59 TUNED PIPE 09 C52 TUNED PIPE 15-21-60 CSH GLOW PLUGS 049-15 CSR SPEED PAN 049-09 CSW SPEED PAN 15-21 CSP CARBON RACE OR FA PROPS ALL ENGINES ARE TEST RUN BEFORE THEY LEAVE THE FACTORY QUALITY OF WORKMANSHIP ANTY YOUNGSTERS SPECIAL SS 15 UC DIESEL $2775 CS iSP UC GLOW $4775 MUST BE UNDER 16 YEARS OLD FOR THIS SPECIAL PLEASE! $14200 $14900 $14200 $14600 $13700 $14200 $ 5500 $12900 $13900 $14900 $18900 $ 5900 $12900 $13900 $14900 $15500 $ 2900 $ 3100 $ 3900 $ 399 $ 3995 $ 4695 $ 1475 CH*6 WI Must have expiration date MWteCh,pbnkAmhr want design build durability want ship well crafted hold together Look such things seams fit ted Ask questions Are edges faced / ply Observe sides fair nicely have shrunk expanded method attaching cowl may have forced its side out over period time part Ive found best avoid applying pressure through single point against separa tion line Instead use four screws threaded hardwood points setting up pressure can applied points rather ing transmitted immediate cowl area As Ive said before good designs evolution ary best fliers carefully examine planes critique themselves technique struc ture Good designs made fly crash NEW HIGH PERFORMANCE HIGH TECH ENGINES FOR THE 90s ABC DUAL BALL BEARING SCHNUERLE RPM FIGURES ON PA FUEL 0 NITRO NITROGEN GAS HARDENED STEEL CRANK BRONZE BUSHED HIGH PERFORMANCE ALUMINUM ALLOY ROD CIRCLIP WRIST PIN MAT FINISHED ALUMINUM CRANKCASE FOR BETTER COOLING NEW HIGH TECH ENGINES FOR THE 90s! 21 MARINE & 80 2x2 COME WITH CARE ALL OTHER ENGINES EXCEPT 15TR COME WITH UC VENTURI & NEEDLE VALVE ASSEMBLY A & 15 ENGINES COME WITH BUTTONHEAD TYPE GLOW PLUG ALL ENGINES EXCEPT 1SP-15TR & 60 COME WITH ALUMINUM SPINNER THE 21N HAS GROOVE FOR BELT START NEW CS PULSE JET ENGINES ALL STAINLESS STEEL CONSTRUCTION NO MOVING PARTS TO WEAR OUT USE REGULAR GASOLINE EASY START SJP-1 26 LBS THRUST $18075 SJP-2 51 LBS THRUST $21575 NEW 15 COMBAT SPECIAL AND 40 QUICKEE 500 SPECIAL SEND IN YOUR REQUEST SEND NO MONEY YOU WILL BE NOTIFIED WHEN AVAILABLE SEND MAIL ORDERS TO CHEROKEE HILL SOUTH AERO ENGINES LTD 2914 BUCKLEY AVE LAKE WORTH FL 33461 407-965-6150 FROM 6PM TO 9PM EXCLUSIVE CS DISTRIBUTOR DEALER INQUIRIES INVITED SEND $500 FOR SHIPPING & HANDLING COD ADD $450 FLORIDA RESIDENTS ADD 6% SALES TAX CHECK OR MONEY ORDER particular structure isnt absolutely essen tial get out Dremel Ive seen Al Rage take Dremel tool spars after hed planked wing grind nothing outboard gear points can eliminate parts mass simply ing meticulous structural analysis stress points what components absorb strain Once thats done decide ne structure-whittling stepand go D Aerials OSOTE AS EACITOJO & PflOPIAARLE FCC AERIAL SYSTEM PROPESSIORACCA PMOOOCED DEOTAPE HAS ALL ISPORMOTIOS TO MAKE YOUR VENTURE ASOCCESS CAMERA Shoot Perfect1 RULES SSRALCOAION PAOPER SSSES SPECIALIZES AIRCYAPT AESISAS OPETTE AIOCRAPT MOOS CAMERA MOAOLE COASTRUCTIOR AMA ULCO STORE STIL CAMERA CAMCORDER AMA TRASSAUflEE TSISOES OEMOASTRATED MOW INALUOMS FOOTAME OF LARRY RTRAMKESA1AEARCANE REST AND MOST COM PLEAS PERFECT FOR MORMAISTOR PRO May1991 117
Edition: Model Aviation - 1991/05
Page Numbers: 46, 106, 117
FAST RAT WING construction have several requests concerning construc tion Fast Rat wing will durable flight will support ag gressive grabs during pit stops under racing conditions early eighties wings fabricated piece ultra light 3R bass wood inner section bass wood cut out slotted wires air foil shaped requirements Most wings saw early days Clark-Y flat airfoil bottom present day Rat racers generally uti lize 60%-40% airfoil construc tion aircraft laminated hard balsa Kevlar reinforcement lead ing trailing edges spar areas month have enclosed photo Larry Dziaks Fast Rat racer showing construction balsa wing will note five-ply plywood used cen ter section tapered crutch prevent wing flexing during high speed hard wood center section absolutely manda tory hold-down screws used area Some crutches tapered point half way down wing tip have seen several competitors run tapered crutch out farther added stiffness leading trailing edges hard wood sanded airfoil laminating two pieces balsa wood slotting can accomplished Use either Kevlar half-ounce Fiberglas cloth rein forcement after sanding shape strong durable wing Half Racing handle As entry level competitors aware small easily adjust able 1AA racing handle almost non-existent Bill Bischoff Terry Kirby have sent drawing handle several us have constructed found quite usable merely used some scrap maple motor mount stock drilled holes cable installed adjustment screw actually sanded edges off motor mount stock make little smoother hold pilots hand addition coated clear epoxy included red paint top end pre vent picking up handle controls reversed quite inexpensive unit have enclosed simple drawing handle observation Aerospace composite news release nofray carbon fiber tape Dallas TX Racing Heres photograph Texas contingent flying Foxberg Rac ing Final Left right Harold Sprague just taking off Mike Greb Bill Bischoff hat already working models Bill appears resisting Mikes passing efforts particular facilities have very nice phalt flying circle concrete pad grass peripheral areas Continued page 106 1/2A RACING HANDLE Bill Bischofl/Terry Kirby K 2 027 braided cable Make up ends similar lines leadouts T Paint Top Red 4- Paint clear over Drill 1/16 holes cable 4 Wood screw & washer clamps cable place Maple motor mount stock 1/2 x 3/8 x 3-1/2 Round edges desired Put screw eye bottom safety thong desired left Harold Sprague Mike Greb Biii Bischoff fiy Foxberg Racer Dalias Texas contest right isa Biachoff/Kirby drawing Haif racing handie 46 Model Aviation Confrol Line Racing John Ballard 10102 Kimbiewlck Dr Louisvlik KY 40223 underside Larry Oziaks Fast Rat shows baisa inlaid hardwood con struction Z-Poxy Z five minute material low viscos ity penetration takes care snarled onfield repairs Reinforcing- TisJuo Carbon Fib r Stock No DescriptionI PriceOWAmount III____ I --I Check order orI HANDLING CHARGE Credit Card order COD Order I\INo handling charge/USA order over ssoootTOTAL Handling charge Foreign Orders actoal pootage pivo $500 will hold yoar order ly once $ amoant needed shipping Street Address__________ _____ EMasterCard EVisa EAmerExp UDiscover Exp Date______ EShip COD EMy Check enclosed $ ElJust send FREE catalog MA il HOWW BD INTERNATIONAL INC 5614 FRANKLIN PIKE CIRCLE BRENTWOOD TN 37027 615 373-1444 Fax 615 377-6948 Sub Total 73/4% Tax TN Only Handling StateZip WI ndsocklBeshar Continued page 103 pole mount shown cut %-in diameter dowel tapered will fit inside piece 3A-in schedule 40 standard pipe have found ideal material pole pole mount ever can constructed accommodate size pole used Drill Y6-in-diameter hole through center pole mount shown drawing Insert two %-in-long 346-indiameter hollow brass rivets hole top bottom pole mount glue place cyano act bearings Two same type hollow rivets also cyano-glued top bottom bearing blocks fuselage axis rod A-in-diameter steel rod installed bent top bottom retention shown drawing serves central pivot fuse lage assembly wing elevator assembled through fuselage slots epoxied place Next A-in hex bolt 1 long x 20 threads serves propeller shaft Three steel flat washers serve thrust bearings Assemble latter items shown epoxy A-in hex-head bolt shaft bearing block being careful overtighten bolt will prevent propeller turning freely Also get epoxy washers and/or propel ler hub remains trim model insignia wings colors de sired trust will enjoy build ing Wind Direction Finder will also refer club field choosing direction takeoffs landings hope fliers spectators will enjoy much weve enjoyed E RC Helicopters/Jolly Continued page 45 OCRCHA provided frequency control including use scanner required safety inspec tion models very impressive fun fly around Thanks support local radio station nonmodeling types showed up view activities impressed both ma chines people What can said ex cept OCRCHA should very proud self positive image projects pub lic Onboard starters fun fly opportunity observe effective onboard starter use Produced Gary Coler Chuck Alessio system uses small electric motor onboard battery start engine demonstrated Concept 30 witnessed seven consecutive startups shutdowns systems having recharged system worked well Helicopter didnt seem notice additional weight interested contact Gary Chuck 818/999-3952 Ill trying near future Well wraps things up month Id like hear other clubs out maybe can publish some details activities way OCRCHA would like exchange news letters other Helicopter clubs Interested Contact Blade Flutter PO Box 18027 Anaheim CA 92817-8027 BCNU CL Racing/Ballard Continued page 46 During winter construction projects have found excellent carbon fiber tape does separate fray ends used extremely thin epoxy gives excellent reinforcing area wings stamp areas addition aerospace composite products company also makes no-fray carbon fibered tape can used strengthening no fray feature what makes product excellent infor mation samples write Aerospace Com posites Products PO Box 1621 Irvine CA 92714 714 250-1107 Z-Poxy recently received sample twocomponent five-minute epoxy Pacer TechnologyZ-Poxy black box pink print identifies very thin excellent penetrating five minute epoxy prob Continued page 117 106 Model Aviation CL Racing/Ballard Continued page 106 lem five-minute epoxies lack penetration Z-Poxy has low viscosity good penetration can avoid overly thin running problems Since does have some thixotropics cure response low temperatures excellent did some on-field repairs sons Mouse Racer found under cool on-field conditions gave us hard cure around fifteen minutes after applica tion cracked rudders andlor elevators like material much better hotstuff-type materials other heavy thixo tropic epoxies penetrate leave rather heavy residue surface addition material has good wetting light glass cloth should repair require patching excessive weight build-up over affected area As always comments photo graphs solicited D CL Aerobatics/McMillafl Continued page 48 ing measurements surfaces Ive completed Al though think Im reasonably accurate builder Ive found flaps dimensions never tended Apparently final shaping straight trailing edge hinge line sanding block just little heavy point should check last time make sure everything way think before applying paint new Caudron final check showed inboard flap over /i6 chord root outboard onea discrepancy could have caused some real funnies gone uncorrected lieve trying find out whats inducing roll can drive up wall change subject pure trim problems lets talk about lessons learned con struction details cardinal rule Ive got comfortable what example after observing evaluating different methods over years Ive evolved own way attaching cowlingsone like works best recommendation arriving good approach construction problem first look what youve experienced look best planes can find both new old CS COMPETITION ENGINES II CSG 049NORMAL ABC 28K RPM CSG 049SPEEDABC 35K RPM CSG 061NORMAL ABC 27K RPM CSG 061SPEEDABC 35K RPM CSG 09NORMAL ABC 27K RPM CSG 09SPEEDABC 36K RPM CSG 15PSPORTSEB 18K RPM CSG 15NORMAL ABC 27K RPM CSG 15SPEEDABC 37K RPM CSA 15SPEEDAAC 37K RPM CSD 15TR DIESELAAC 23K RPM CRC 15TEAM RACE CARB DIESEL CSG 2122BBABC18KRPM CSG 21SPEEDABC 28K RPM CSG 21NMARINE ABC 28K RPM CSG 6022BBABC2- 18KRPM CS1 TUNED PIPE 049-061 C59 TUNED PIPE 09 C52 TUNED PIPE 15-21-60 CSH GLOW PLUGS 049-15 CSR SPEED PAN 049-09 CSW SPEED PAN 15-21 CSP CARBON RACE OR FA PROPS ALL ENGINES ARE TEST RUN BEFORE THEY LEAVE THE FACTORY QUALITY OF WORKMANSHIP ANTY YOUNGSTERS SPECIAL SS 15 UC DIESEL $2775 CS iSP UC GLOW $4775 MUST BE UNDER 16 YEARS OLD FOR THIS SPECIAL PLEASE! $14200 $14900 $14200 $14600 $13700 $14200 $ 5500 $12900 $13900 $14900 $18900 $ 5900 $12900 $13900 $14900 $15500 $ 2900 $ 3100 $ 3900 $ 399 $ 3995 $ 4695 $ 1475 CH*6 WI Must have expiration date MWteCh,pbnkAmhr want design build durability want ship well crafted hold together Look such things seams fit ted Ask questions Are edges faced / ply Observe sides fair nicely have shrunk expanded method attaching cowl may have forced its side out over period time part Ive found best avoid applying pressure through single point against separa tion line Instead use four screws threaded hardwood points setting up pressure can applied points rather ing transmitted immediate cowl area As Ive said before good designs evolution ary best fliers carefully examine planes critique themselves technique struc ture Good designs made fly crash NEW HIGH PERFORMANCE HIGH TECH ENGINES FOR THE 90s ABC DUAL BALL BEARING SCHNUERLE RPM FIGURES ON PA FUEL 0 NITRO NITROGEN GAS HARDENED STEEL CRANK BRONZE BUSHED HIGH PERFORMANCE ALUMINUM ALLOY ROD CIRCLIP WRIST PIN MAT FINISHED ALUMINUM CRANKCASE FOR BETTER COOLING NEW HIGH TECH ENGINES FOR THE 90s! 21 MARINE & 80 2x2 COME WITH CARE ALL OTHER ENGINES EXCEPT 15TR COME WITH UC VENTURI & NEEDLE VALVE ASSEMBLY A & 15 ENGINES COME WITH BUTTONHEAD TYPE GLOW PLUG ALL ENGINES EXCEPT 1SP-15TR & 60 COME WITH ALUMINUM SPINNER THE 21N HAS GROOVE FOR BELT START NEW CS PULSE JET ENGINES ALL STAINLESS STEEL CONSTRUCTION NO MOVING PARTS TO WEAR OUT USE REGULAR GASOLINE EASY START SJP-1 26 LBS THRUST $18075 SJP-2 51 LBS THRUST $21575 NEW 15 COMBAT SPECIAL AND 40 QUICKEE 500 SPECIAL SEND IN YOUR REQUEST SEND NO MONEY YOU WILL BE NOTIFIED WHEN AVAILABLE SEND MAIL ORDERS TO CHEROKEE HILL SOUTH AERO ENGINES LTD 2914 BUCKLEY AVE LAKE WORTH FL 33461 407-965-6150 FROM 6PM TO 9PM EXCLUSIVE CS DISTRIBUTOR DEALER INQUIRIES INVITED SEND $500 FOR SHIPPING & HANDLING COD ADD $450 FLORIDA RESIDENTS ADD 6% SALES TAX CHECK OR MONEY ORDER particular structure isnt absolutely essen tial get out Dremel Ive seen Al Rage take Dremel tool spars after hed planked wing grind nothing outboard gear points can eliminate parts mass simply ing meticulous structural analysis stress points what components absorb strain Once thats done decide ne structure-whittling stepand go D Aerials OSOTE AS EACITOJO & PflOPIAARLE FCC AERIAL SYSTEM PROPESSIORACCA PMOOOCED DEOTAPE HAS ALL ISPORMOTIOS TO MAKE YOUR VENTURE ASOCCESS CAMERA Shoot Perfect1 RULES SSRALCOAION PAOPER SSSES SPECIALIZES AIRCYAPT AESISAS OPETTE AIOCRAPT MOOS CAMERA MOAOLE COASTRUCTIOR AMA ULCO STORE STIL CAMERA CAMCORDER AMA TRASSAUflEE TSISOES OEMOASTRATED MOW INALUOMS FOOTAME OF LARRY RTRAMKESA1AEARCANE REST AND MOST COM PLEAS PERFECT FOR MORMAISTOR PRO May1991 117