Radio Control Helicopters Larry Jolly WEIGHTED BLADES Septem ber 1984 issue discussed AMAs adoption FM rule governing metalweighted rotor blades shared yiews asked reader response received over 30 letters numerous phone calls subject Ive decided publish portions two letters individuals different reasons writing both exhibited genuine thought feeling subject first letter Dr Cyrus Stow Conyers GA appears three separate points inherent safety rule 1 No metal tail/main rotor blades 2 No knife-edge leading edges same 3 No metal same beyond two inches root attachment Regarding knife-edge leading edges blades emergency rule has some merit other point find argument against new rule very sub stantial Whether rule kept intact dis carded better ruling will have matter others decide will suggest thought hope AMAs leadership will reflect upon Should rapidly-moving bladeei ther rotors model Helicopter Continued page 144 Heres what controversy about flat bar lead zinc weighing about 9 grams Thats US 25$ piece below size comparison West Coast fliers use type blade ballast ban such weights Emergency Safety Rule discussed Larry hisSept column Theres lot excitementafootaboutwhats shown wood Helicopter blade has metal ballast weight installed lower blade photo above shows metal slug fits milled slot hardwood leading edge upper blade shows slot filled epoxy glue also embeds ballast photo below see what similar blade looks like after has struck ground chopper turned over Note relatively little damage Larry has scraped some wood away over ballast weight show still safely place its dark-colored patch blade 56 Model Aviation Tandem-rotor Helicopter models seldom seen flying field common full-scale machines Boeing-Vertoi CH-47C seen three-view form above left ModelerAlbert Doucette used fly real thing has experimenting models flying banana seen right aftera gust wind suddenly lifted taxiing machine off ground dumped height about three feet tipped overand note though rotor blades struck concrete rotors badly damagednor have metal ballast weights pulled out propellers used fixed-wing model aircraft alikefracture come apart due material fatigue cause piece blade subsequently happen strike person enough force becomes embedded totally within persons skull chest abdomen believe surgeons seeking re move foreign body injured person would grateful faced task locating fragment metal radiopacity ie capable detection X-ray diagnostic film rather being forced fish blindly within persons vital organs during attempt save life looking piece wood plastic generally radiolucent ie esseittial ly invisible X-ray diagnostic film short Id like see AMAs leadership take farsighted wise effort consult medical experts might advise rule makers about safety matters post-trauma fac tors also very important Thank Dr Stow giving us different viewpoint have admit didnt think about procedures might used after accident After AMA safety rules de signed keep such accidents occur ring first place second letter modeler enjoys building scale tandem-rotor models type flew Army letter Albert Doucette Stockton CA writes received copy Model Aviation few days ago quite taken aback Emergency Ruling pertaining rotor blades model Helicopters sounds like proponents ruling have stock company manufactures rotor blades am retired Army helicopter pilot former Aviation Maintenance Officer Test Pilot Im tell used lead weights ends main tail rotor blades ballastand far know still point about blade flutter control response right however another reason balancing blades ie blades same weight nor have same flexibility imperative blades no matter track within one-fourth inch reduced about one-sixteenth inch models multiple-bladed rotor systems rotor system will set up vibrations detrimental rotor system transmission structural com ponents aircraft way thinking would detrimental models because lack structure receiver servo installation enact ruling written PIPER PACER PA-20 Send $200 ceemphte flat custom built EC aira-eft HOBBY CAPITOL 46 N Oak St Ventura CA 93001 805 643-7616 642-8465 see Competition Newsletter September 1984 p 117 would surely stifle us experimenting multiple-blad ed rotor systems Can imagine CH 21 CH-47 tandem-rotor helicopter paddle-bars two-bladed rotor system shift full-scale helicop ter industry away two-bladed rotor systems should modelers limited proven systems ones would resemble rotor scale model building am currently experimenting tan dem-rotor Helicopters have three blades per head takes long time weigh balance six blades men tion time takes get track crash tip-over wipes out work well extensively damaging blades So far have able repair damage tips blades too much trouble buy new blades time crashed tipped over price charging rotor blades nowadays flying would either pretty expensive blades homemade hardwood leading edge balsa trailing edge covered fiberglass balanced stalled rotor head Holes drilled tips accept weights needed balance rotor assembly epoxied place after balancing com pleted experience crashes tipWIRE LS VIC WIRE WHEELS ED & REALISTIC Custom built seamless machined rims Deirin bearings two sizes 8 tar Nieupors & TriplaneS3495 5 tar Proctor models$3696 Send 60d complete literature price list kits ac cessories QUALITY R/C PRODUCTS SINCE 1960 em 1I -MatcneU rerrormance yszem TOP PERFORMANCE K&B ENGINES 16 Airplane 4 Marine KAB FUELSK&B GLOW PLUGS 7 Blends4 choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER ILEB SUPER POXY RESIN K&B SUPER POXY THINNER K&B SUPER POXY PRIMERK&B SUPER POXY PAINT K&R MIXING CUPS 144 Model Aviation Astounding ~Iusss rK canesuu plastics.. Very light weight discriminating hobbiest. Either Pilot version kit.. Sportsman Barnstormer.. Darn Good Airmen .. complete NEW LOW PRICES 0 1/6 Scale $55 1/4 Scale $795 1/3 Scale 142 See Dealer add Dollar tor direct order handling Used IMAA intewet Flying SqdnNYS Residents add n% Sales tax Ouarter Scale eWingspan 89 Plans & Notes 5 Partial Kit ft Plans $12500 RC HelicopterslJolly Continued page 56 IN STOCK FOR IMMEDIATE SHIPMENT New 30 ClD QUADRA $19995 New 22 CID QUADRA $10950 Reg 22 QUADRAB9995 Brisighella Flywheel$11995 Reg 22 QUADRA POWER ASSEMBLY ONLY$6450 QUADRA REPAIR 1050 plus parts Jim Mess ERCOUPEPLANS $2395 KIT $23995 Jim Mess TOMAHAWKPLANS $2395 KIT $25995 Jim Masse BBALLTRAINERPLANS $1895 KIT $9995 BALSA BASSWOOD sized 35% OFF Concept FLEET PLANS $2995 51T $15995 COWL $1995 FLOATS 35115 scale cares $1795 complete kit $3995 FLOATS 49 scalecores $2195 complete kit $4796 10 WWl WHEELS $2595 P&W CVIS FLEETI5I$2595 PLANSr SUPER STEARMAN lGodfreyl $2895 STARDUSTER TOO lBisighellal V J3 CUB Nelit $2995 VOLKSPLANE 1/ IChickes Charisi $2395 COCKPIT KlTS Tomahawk F4Ut Spittire $2295 Ercoupe $2095 Stearwan 52295 Citabria $2495 J3 Cub $2195 ME-itS $2395 Fleet $2195 US Quadra FUEL TANKS16 oz $695 32oa $795 FIBERGLASS ARROW SHAFTS 5115 32 long SIRisOG 24-Hour Service. Add $250 post age Send Bank Check Money Order JIM MESSERS QUALITY MODEL PRODUCTS 106 Valley View Dr Allegany NY 14706 overs leads believe hardly danger lead weights flying through air Once rotor system strikes ground use single-bolt attachment system yields contact blades displaced loss momentum fact blades hitting ground precludes weights flying anywhere anything weights would imbedded earth tip first contacted ground dont know what statistics injuries flying pieces Helicopter crashes havent heard opinion somebody crying wolf pre maturely safety procedures followed ie flying safe distance away spec tators flier maintaining safe distance machine should nt injuries flying weights other pieces aircraft What going write new rule component Helicopter other fast-moving components chop per besides rotor blades What about blades cooling fan parts centrifugal clutch Enclosed picture model after crashing about three feet look tips blades hardly damage dont recall losing weights Scenario crash taxiing along ground caught gust wind Model lifted rolled onto right side blades striking ground perpendicular Note ground concrete have said about can say subject Lets just hope efforts will fall deaf ears always some risks everything saddle us such ruling could detriment fledglingand yet undeveloped hobby Model Helicopters have come own past few years still possibilities nothing beautiful model Helicopter flight dream perfect tandem-rotor machine will add beauty sport model Helicopter flying Thank very much Mr Doucette BALSARI TE RIO WONDER JUICE Good old Balsarite makes covering stick better know also moisture-proofs wood adds little extra structural strength too Ill bet didnt know other things can others took time send views have passed letters Helicopter Contest Board hopes will some good months photos show what believe best method ballasting wood rotor blades shows metal weight happens piece zinc weighs 9 grams size comparison note quarter lead photo shows weight place its milled slot rotor blade upper blade shows weight epoxied place Another photo shows results ground strike Wood over metal has removed show ballast still place Blades made up manner offer best alternative fiber glass composite blades regard safety months three-view Boeing Vertol CH-47 Nicknamed Chinook CH-47 designed 1959 medium-lift transport US Army El prevents fuelcreep under seams El fuelproofs engine compartments El covers up fuelsoaked wood model can immediately re-covered El allows sheeting ironed down around curves El attaches raw dacron silk paper tissue wood 420 Babylon Road J/VFII Horsham PA 19044 USA Over 1000 Chinooks ordered 1980 variety military forces commercial operators Basically rectangular box tandem rotors pair 2850 shaft horsepower turboshaft engines located sides Chinook under aft rotor blade Loading aircraft via ramp aft end fuselage troops light armor can held its spacious cabin Because its ability carry sling loads up 30000 pounds Chinook credited recovering hundreds downed aircraft during Vietnam war am hoping Mr Doucette will con tinue experiments tandem rotors will have success anyone working tandem ship please let know progress Tandem rotors have yet fully explored model scene BCNU Larry Jolly 5501 W Como Santa Ana CA 92703 - -- 0 0 Send S1OOin Cash Check Stamps 32 Page Tabloid size illustrated DISCOUNT Catalog Sent 1st Class Mail COMET COX FLYLINE- FOX GOLDBERG GUILLOWS JETCO K&B PACTRA PECK POLYMER PERFECT 516- STERLING SULLIVAN TOP FLITE & OTHERS PENN VALLEY HODDY CENTER 637 1 Ham St Lanadallla 19446 21SSSS 268 368-0770 DIVISION OF BAR/RIcH SALES Co #2 FAIRWAY HANNIBAL MO 63401 314 221-8803 aster FACTURERS OF SPORT PATTERNSTINGER II PEPPERMINT PATTIE 60 TAN PEPPERMINT PATTIE 40SPORT/SCALE PEPPERMINT PATTIE 15 HIPERBIPE November1984 145
Edition: Model Aviation - 1984/11
Page Numbers: 56, 144, 145
Radio Control Helicopters Larry Jolly WEIGHTED BLADES Septem ber 1984 issue discussed AMAs adoption FM rule governing metalweighted rotor blades shared yiews asked reader response received over 30 letters numerous phone calls subject Ive decided publish portions two letters individuals different reasons writing both exhibited genuine thought feeling subject first letter Dr Cyrus Stow Conyers GA appears three separate points inherent safety rule 1 No metal tail/main rotor blades 2 No knife-edge leading edges same 3 No metal same beyond two inches root attachment Regarding knife-edge leading edges blades emergency rule has some merit other point find argument against new rule very sub stantial Whether rule kept intact dis carded better ruling will have matter others decide will suggest thought hope AMAs leadership will reflect upon Should rapidly-moving bladeei ther rotors model Helicopter Continued page 144 Heres what controversy about flat bar lead zinc weighing about 9 grams Thats US 25$ piece below size comparison West Coast fliers use type blade ballast ban such weights Emergency Safety Rule discussed Larry hisSept column Theres lot excitementafootaboutwhats shown wood Helicopter blade has metal ballast weight installed lower blade photo above shows metal slug fits milled slot hardwood leading edge upper blade shows slot filled epoxy glue also embeds ballast photo below see what similar blade looks like after has struck ground chopper turned over Note relatively little damage Larry has scraped some wood away over ballast weight show still safely place its dark-colored patch blade 56 Model Aviation Tandem-rotor Helicopter models seldom seen flying field common full-scale machines Boeing-Vertoi CH-47C seen three-view form above left ModelerAlbert Doucette used fly real thing has experimenting models flying banana seen right aftera gust wind suddenly lifted taxiing machine off ground dumped height about three feet tipped overand note though rotor blades struck concrete rotors badly damagednor have metal ballast weights pulled out propellers used fixed-wing model aircraft alikefracture come apart due material fatigue cause piece blade subsequently happen strike person enough force becomes embedded totally within persons skull chest abdomen believe surgeons seeking re move foreign body injured person would grateful faced task locating fragment metal radiopacity ie capable detection X-ray diagnostic film rather being forced fish blindly within persons vital organs during attempt save life looking piece wood plastic generally radiolucent ie esseittial ly invisible X-ray diagnostic film short Id like see AMAs leadership take farsighted wise effort consult medical experts might advise rule makers about safety matters post-trauma fac tors also very important Thank Dr Stow giving us different viewpoint have admit didnt think about procedures might used after accident After AMA safety rules de signed keep such accidents occur ring first place second letter modeler enjoys building scale tandem-rotor models type flew Army letter Albert Doucette Stockton CA writes received copy Model Aviation few days ago quite taken aback Emergency Ruling pertaining rotor blades model Helicopters sounds like proponents ruling have stock company manufactures rotor blades am retired Army helicopter pilot former Aviation Maintenance Officer Test Pilot Im tell used lead weights ends main tail rotor blades ballastand far know still point about blade flutter control response right however another reason balancing blades ie blades same weight nor have same flexibility imperative blades no matter track within one-fourth inch reduced about one-sixteenth inch models multiple-bladed rotor systems rotor system will set up vibrations detrimental rotor system transmission structural com ponents aircraft way thinking would detrimental models because lack structure receiver servo installation enact ruling written PIPER PACER PA-20 Send $200 ceemphte flat custom built EC aira-eft HOBBY CAPITOL 46 N Oak St Ventura CA 93001 805 643-7616 642-8465 see Competition Newsletter September 1984 p 117 would surely stifle us experimenting multiple-blad ed rotor systems Can imagine CH 21 CH-47 tandem-rotor helicopter paddle-bars two-bladed rotor system shift full-scale helicop ter industry away two-bladed rotor systems should modelers limited proven systems ones would resemble rotor scale model building am currently experimenting tan dem-rotor Helicopters have three blades per head takes long time weigh balance six blades men tion time takes get track crash tip-over wipes out work well extensively damaging blades So far have able repair damage tips blades too much trouble buy new blades time crashed tipped over price charging rotor blades nowadays flying would either pretty expensive blades homemade hardwood leading edge balsa trailing edge covered fiberglass balanced stalled rotor head Holes drilled tips accept weights needed balance rotor assembly epoxied place after balancing com pleted experience crashes tipWIRE LS VIC WIRE WHEELS ED & REALISTIC Custom built seamless machined rims Deirin bearings two sizes 8 tar Nieupors & TriplaneS3495 5 tar Proctor models$3696 Send 60d complete literature price list kits ac cessories QUALITY R/C PRODUCTS SINCE 1960 em 1I -MatcneU rerrormance yszem TOP PERFORMANCE K&B ENGINES 16 Airplane 4 Marine KAB FUELSK&B GLOW PLUGS 7 Blends4 choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER ILEB SUPER POXY RESIN K&B SUPER POXY THINNER K&B SUPER POXY PRIMERK&B SUPER POXY PAINT K&R MIXING CUPS 144 Model Aviation Astounding ~Iusss rK canesuu plastics.. Very light weight discriminating hobbiest. Either Pilot version kit.. Sportsman Barnstormer.. Darn Good Airmen .. complete NEW LOW PRICES 0 1/6 Scale $55 1/4 Scale $795 1/3 Scale 142 See Dealer add Dollar tor direct order handling Used IMAA intewet Flying SqdnNYS Residents add n% Sales tax Ouarter Scale eWingspan 89 Plans & Notes 5 Partial Kit ft Plans $12500 RC HelicopterslJolly Continued page 56 IN STOCK FOR IMMEDIATE SHIPMENT New 30 ClD QUADRA $19995 New 22 CID QUADRA $10950 Reg 22 QUADRAB9995 Brisighella Flywheel$11995 Reg 22 QUADRA POWER ASSEMBLY ONLY$6450 QUADRA REPAIR 1050 plus parts Jim Mess ERCOUPEPLANS $2395 KIT $23995 Jim Mess TOMAHAWKPLANS $2395 KIT $25995 Jim Masse BBALLTRAINERPLANS $1895 KIT $9995 BALSA BASSWOOD sized 35% OFF Concept FLEET PLANS $2995 51T $15995 COWL $1995 FLOATS 35115 scale cares $1795 complete kit $3995 FLOATS 49 scalecores $2195 complete kit $4796 10 WWl WHEELS $2595 P&W CVIS FLEETI5I$2595 PLANSr SUPER STEARMAN lGodfreyl $2895 STARDUSTER TOO lBisighellal V J3 CUB Nelit $2995 VOLKSPLANE 1/ IChickes Charisi $2395 COCKPIT KlTS Tomahawk F4Ut Spittire $2295 Ercoupe $2095 Stearwan 52295 Citabria $2495 J3 Cub $2195 ME-itS $2395 Fleet $2195 US Quadra FUEL TANKS16 oz $695 32oa $795 FIBERGLASS ARROW SHAFTS 5115 32 long SIRisOG 24-Hour Service. Add $250 post age Send Bank Check Money Order JIM MESSERS QUALITY MODEL PRODUCTS 106 Valley View Dr Allegany NY 14706 overs leads believe hardly danger lead weights flying through air Once rotor system strikes ground use single-bolt attachment system yields contact blades displaced loss momentum fact blades hitting ground precludes weights flying anywhere anything weights would imbedded earth tip first contacted ground dont know what statistics injuries flying pieces Helicopter crashes havent heard opinion somebody crying wolf pre maturely safety procedures followed ie flying safe distance away spec tators flier maintaining safe distance machine should nt injuries flying weights other pieces aircraft What going write new rule component Helicopter other fast-moving components chop per besides rotor blades What about blades cooling fan parts centrifugal clutch Enclosed picture model after crashing about three feet look tips blades hardly damage dont recall losing weights Scenario crash taxiing along ground caught gust wind Model lifted rolled onto right side blades striking ground perpendicular Note ground concrete have said about can say subject Lets just hope efforts will fall deaf ears always some risks everything saddle us such ruling could detriment fledglingand yet undeveloped hobby Model Helicopters have come own past few years still possibilities nothing beautiful model Helicopter flight dream perfect tandem-rotor machine will add beauty sport model Helicopter flying Thank very much Mr Doucette BALSARI TE RIO WONDER JUICE Good old Balsarite makes covering stick better know also moisture-proofs wood adds little extra structural strength too Ill bet didnt know other things can others took time send views have passed letters Helicopter Contest Board hopes will some good months photos show what believe best method ballasting wood rotor blades shows metal weight happens piece zinc weighs 9 grams size comparison note quarter lead photo shows weight place its milled slot rotor blade upper blade shows weight epoxied place Another photo shows results ground strike Wood over metal has removed show ballast still place Blades made up manner offer best alternative fiber glass composite blades regard safety months three-view Boeing Vertol CH-47 Nicknamed Chinook CH-47 designed 1959 medium-lift transport US Army El prevents fuelcreep under seams El fuelproofs engine compartments El covers up fuelsoaked wood model can immediately re-covered El allows sheeting ironed down around curves El attaches raw dacron silk paper tissue wood 420 Babylon Road J/VFII Horsham PA 19044 USA Over 1000 Chinooks ordered 1980 variety military forces commercial operators Basically rectangular box tandem rotors pair 2850 shaft horsepower turboshaft engines located sides Chinook under aft rotor blade Loading aircraft via ramp aft end fuselage troops light armor can held its spacious cabin Because its ability carry sling loads up 30000 pounds Chinook credited recovering hundreds downed aircraft during Vietnam war am hoping Mr Doucette will con tinue experiments tandem rotors will have success anyone working tandem ship please let know progress Tandem rotors have yet fully explored model scene BCNU Larry Jolly 5501 W Como Santa Ana CA 92703 - -- 0 0 Send S1OOin Cash Check Stamps 32 Page Tabloid size illustrated DISCOUNT Catalog Sent 1st Class Mail COMET COX FLYLINE- FOX GOLDBERG GUILLOWS JETCO K&B PACTRA PECK POLYMER PERFECT 516- STERLING SULLIVAN TOP FLITE & OTHERS PENN VALLEY HODDY CENTER 637 1 Ham St Lanadallla 19446 21SSSS 268 368-0770 DIVISION OF BAR/RIcH SALES Co #2 FAIRWAY HANNIBAL MO 63401 314 221-8803 aster FACTURERS OF SPORT PATTERNSTINGER II PEPPERMINT PATTIE 60 TAN PEPPERMINT PATTIE 40SPORT/SCALE PEPPERMINT PATTIE 15 HIPERBIPE November1984 145
Edition: Model Aviation - 1984/11
Page Numbers: 56, 144, 145
Radio Control Helicopters Larry Jolly WEIGHTED BLADES Septem ber 1984 issue discussed AMAs adoption FM rule governing metalweighted rotor blades shared yiews asked reader response received over 30 letters numerous phone calls subject Ive decided publish portions two letters individuals different reasons writing both exhibited genuine thought feeling subject first letter Dr Cyrus Stow Conyers GA appears three separate points inherent safety rule 1 No metal tail/main rotor blades 2 No knife-edge leading edges same 3 No metal same beyond two inches root attachment Regarding knife-edge leading edges blades emergency rule has some merit other point find argument against new rule very sub stantial Whether rule kept intact dis carded better ruling will have matter others decide will suggest thought hope AMAs leadership will reflect upon Should rapidly-moving bladeei ther rotors model Helicopter Continued page 144 Heres what controversy about flat bar lead zinc weighing about 9 grams Thats US 25$ piece below size comparison West Coast fliers use type blade ballast ban such weights Emergency Safety Rule discussed Larry hisSept column Theres lot excitementafootaboutwhats shown wood Helicopter blade has metal ballast weight installed lower blade photo above shows metal slug fits milled slot hardwood leading edge upper blade shows slot filled epoxy glue also embeds ballast photo below see what similar blade looks like after has struck ground chopper turned over Note relatively little damage Larry has scraped some wood away over ballast weight show still safely place its dark-colored patch blade 56 Model Aviation Tandem-rotor Helicopter models seldom seen flying field common full-scale machines Boeing-Vertoi CH-47C seen three-view form above left ModelerAlbert Doucette used fly real thing has experimenting models flying banana seen right aftera gust wind suddenly lifted taxiing machine off ground dumped height about three feet tipped overand note though rotor blades struck concrete rotors badly damagednor have metal ballast weights pulled out propellers used fixed-wing model aircraft alikefracture come apart due material fatigue cause piece blade subsequently happen strike person enough force becomes embedded totally within persons skull chest abdomen believe surgeons seeking re move foreign body injured person would grateful faced task locating fragment metal radiopacity ie capable detection X-ray diagnostic film rather being forced fish blindly within persons vital organs during attempt save life looking piece wood plastic generally radiolucent ie esseittial ly invisible X-ray diagnostic film short Id like see AMAs leadership take farsighted wise effort consult medical experts might advise rule makers about safety matters post-trauma fac tors also very important Thank Dr Stow giving us different viewpoint have admit didnt think about procedures might used after accident After AMA safety rules de signed keep such accidents occur ring first place second letter modeler enjoys building scale tandem-rotor models type flew Army letter Albert Doucette Stockton CA writes received copy Model Aviation few days ago quite taken aback Emergency Ruling pertaining rotor blades model Helicopters sounds like proponents ruling have stock company manufactures rotor blades am retired Army helicopter pilot former Aviation Maintenance Officer Test Pilot Im tell used lead weights ends main tail rotor blades ballastand far know still point about blade flutter control response right however another reason balancing blades ie blades same weight nor have same flexibility imperative blades no matter track within one-fourth inch reduced about one-sixteenth inch models multiple-bladed rotor systems rotor system will set up vibrations detrimental rotor system transmission structural com ponents aircraft way thinking would detrimental models because lack structure receiver servo installation enact ruling written PIPER PACER PA-20 Send $200 ceemphte flat custom built EC aira-eft HOBBY CAPITOL 46 N Oak St Ventura CA 93001 805 643-7616 642-8465 see Competition Newsletter September 1984 p 117 would surely stifle us experimenting multiple-blad ed rotor systems Can imagine CH 21 CH-47 tandem-rotor helicopter paddle-bars two-bladed rotor system shift full-scale helicop ter industry away two-bladed rotor systems should modelers limited proven systems ones would resemble rotor scale model building am currently experimenting tan dem-rotor Helicopters have three blades per head takes long time weigh balance six blades men tion time takes get track crash tip-over wipes out work well extensively damaging blades So far have able repair damage tips blades too much trouble buy new blades time crashed tipped over price charging rotor blades nowadays flying would either pretty expensive blades homemade hardwood leading edge balsa trailing edge covered fiberglass balanced stalled rotor head Holes drilled tips accept weights needed balance rotor assembly epoxied place after balancing com pleted experience crashes tipWIRE LS VIC WIRE WHEELS ED & REALISTIC Custom built seamless machined rims Deirin bearings two sizes 8 tar Nieupors & TriplaneS3495 5 tar Proctor models$3696 Send 60d complete literature price list kits ac cessories QUALITY R/C PRODUCTS SINCE 1960 em 1I -MatcneU rerrormance yszem TOP PERFORMANCE K&B ENGINES 16 Airplane 4 Marine KAB FUELSK&B GLOW PLUGS 7 Blends4 choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER ILEB SUPER POXY RESIN K&B SUPER POXY THINNER K&B SUPER POXY PRIMERK&B SUPER POXY PAINT K&R MIXING CUPS 144 Model Aviation Astounding ~Iusss rK canesuu plastics.. Very light weight discriminating hobbiest. Either Pilot version kit.. Sportsman Barnstormer.. Darn Good Airmen .. complete NEW LOW PRICES 0 1/6 Scale $55 1/4 Scale $795 1/3 Scale 142 See Dealer add Dollar tor direct order handling Used IMAA intewet Flying SqdnNYS Residents add n% Sales tax Ouarter Scale eWingspan 89 Plans & Notes 5 Partial Kit ft Plans $12500 RC HelicopterslJolly Continued page 56 IN STOCK FOR IMMEDIATE SHIPMENT New 30 ClD QUADRA $19995 New 22 CID QUADRA $10950 Reg 22 QUADRAB9995 Brisighella Flywheel$11995 Reg 22 QUADRA POWER ASSEMBLY ONLY$6450 QUADRA REPAIR 1050 plus parts Jim Mess ERCOUPEPLANS $2395 KIT $23995 Jim Mess TOMAHAWKPLANS $2395 KIT $25995 Jim Masse BBALLTRAINERPLANS $1895 KIT $9995 BALSA BASSWOOD sized 35% OFF Concept FLEET PLANS $2995 51T $15995 COWL $1995 FLOATS 35115 scale cares $1795 complete kit $3995 FLOATS 49 scalecores $2195 complete kit $4796 10 WWl WHEELS $2595 P&W CVIS FLEETI5I$2595 PLANSr SUPER STEARMAN lGodfreyl $2895 STARDUSTER TOO lBisighellal V J3 CUB Nelit $2995 VOLKSPLANE 1/ IChickes Charisi $2395 COCKPIT KlTS Tomahawk F4Ut Spittire $2295 Ercoupe $2095 Stearwan 52295 Citabria $2495 J3 Cub $2195 ME-itS $2395 Fleet $2195 US Quadra FUEL TANKS16 oz $695 32oa $795 FIBERGLASS ARROW SHAFTS 5115 32 long SIRisOG 24-Hour Service. Add $250 post age Send Bank Check Money Order JIM MESSERS QUALITY MODEL PRODUCTS 106 Valley View Dr Allegany NY 14706 overs leads believe hardly danger lead weights flying through air Once rotor system strikes ground use single-bolt attachment system yields contact blades displaced loss momentum fact blades hitting ground precludes weights flying anywhere anything weights would imbedded earth tip first contacted ground dont know what statistics injuries flying pieces Helicopter crashes havent heard opinion somebody crying wolf pre maturely safety procedures followed ie flying safe distance away spec tators flier maintaining safe distance machine should nt injuries flying weights other pieces aircraft What going write new rule component Helicopter other fast-moving components chop per besides rotor blades What about blades cooling fan parts centrifugal clutch Enclosed picture model after crashing about three feet look tips blades hardly damage dont recall losing weights Scenario crash taxiing along ground caught gust wind Model lifted rolled onto right side blades striking ground perpendicular Note ground concrete have said about can say subject Lets just hope efforts will fall deaf ears always some risks everything saddle us such ruling could detriment fledglingand yet undeveloped hobby Model Helicopters have come own past few years still possibilities nothing beautiful model Helicopter flight dream perfect tandem-rotor machine will add beauty sport model Helicopter flying Thank very much Mr Doucette BALSARI TE RIO WONDER JUICE Good old Balsarite makes covering stick better know also moisture-proofs wood adds little extra structural strength too Ill bet didnt know other things can others took time send views have passed letters Helicopter Contest Board hopes will some good months photos show what believe best method ballasting wood rotor blades shows metal weight happens piece zinc weighs 9 grams size comparison note quarter lead photo shows weight place its milled slot rotor blade upper blade shows weight epoxied place Another photo shows results ground strike Wood over metal has removed show ballast still place Blades made up manner offer best alternative fiber glass composite blades regard safety months three-view Boeing Vertol CH-47 Nicknamed Chinook CH-47 designed 1959 medium-lift transport US Army El prevents fuelcreep under seams El fuelproofs engine compartments El covers up fuelsoaked wood model can immediately re-covered El allows sheeting ironed down around curves El attaches raw dacron silk paper tissue wood 420 Babylon Road J/VFII Horsham PA 19044 USA Over 1000 Chinooks ordered 1980 variety military forces commercial operators Basically rectangular box tandem rotors pair 2850 shaft horsepower turboshaft engines located sides Chinook under aft rotor blade Loading aircraft via ramp aft end fuselage troops light armor can held its spacious cabin Because its ability carry sling loads up 30000 pounds Chinook credited recovering hundreds downed aircraft during Vietnam war am hoping Mr Doucette will con tinue experiments tandem rotors will have success anyone working tandem ship please let know progress Tandem rotors have yet fully explored model scene BCNU Larry Jolly 5501 W Como Santa Ana CA 92703 - -- 0 0 Send S1OOin Cash Check Stamps 32 Page Tabloid size illustrated DISCOUNT Catalog Sent 1st Class Mail COMET COX FLYLINE- FOX GOLDBERG GUILLOWS JETCO K&B PACTRA PECK POLYMER PERFECT 516- STERLING SULLIVAN TOP FLITE & OTHERS PENN VALLEY HODDY CENTER 637 1 Ham St Lanadallla 19446 21SSSS 268 368-0770 DIVISION OF BAR/RIcH SALES Co #2 FAIRWAY HANNIBAL MO 63401 314 221-8803 aster FACTURERS OF SPORT PATTERNSTINGER II PEPPERMINT PATTIE 60 TAN PEPPERMINT PATTIE 40SPORT/SCALE PEPPERMINT PATTIE 15 HIPERBIPE November1984 145