Radio ConErot Scale Bob & Dolly Wischer HEATH Baby Bullet column often include photos unusual models rallies contests trade shows some come mail Invariably photos bring responses readers requesting formation whereabouts builders drawings could obtained duplication model sad fact seldom know builders home address certain drawings offered available Photos Heath Baby Bullet arrived Dan Santich modeler years letter follows match made heaven 05 120 four-cycle engine i-scale Baby Bullet Seems Except FAI Scale meets qualifications Precision Sport Giant Scale Dimensions 74-in span 589-in length 1036 sq wing area 12 lbs dry weight Flies very sweet 16-6 prop qualify FAI will have bury 60 inverted prop drive make dummy cylinders What shame Gemini engine such beautiful piece work thats precarious position FAI AMA Scale Having flown Sport Scale long quite different sensation see tape measure put model recently won first place Precision Scale Tangerine Internats Orlando also high static score lot models entered Sport Scale would have done quite well Precision What does take cross line As far models much think mental decision am process making full-size draw ings Bullet available readers interested can give address like Dan B Santich Rt 1 Box 12 King NC 27021 International Competition have Sport Scale modelers asking information converting Precision Scale approach another Nats team selection 1982 World Championships good time consider what can done enhance chances winning time writing seems Precision RC Scale team Control Line Scale team will selected because host Soviet Union model aero club has elected include Stand-off Scale 1982 eligible team model must conform FAI rules differences between FAI AMA follow Engine displacement FM limited total 61 cu regardless number engines compared 125 cu AMA models Weight model singie multi-engine fuel limited 6 kg 36 Model Aviation Carl Skiba scratch-builtthis Westland Lysander Bob Holmans elite plans Spanning 8-ft covered dress-backing material finished Aero Gloss dope An OS Max 60 flies Carl second person right S Tom Hyans Sopwith 112-Strutter originated English Veron kit Supertigre 23 powers Covering material Sigs Koverall matte Hobbypoxy over dope Tony Van Ecks Vought Corsair A7 Sterner Engineering kit uses Scozzi ducted fan unit K&B 75cc engine Acrylic finish 126 lb plane excellent 1322 lbs compared 15 lbs single 20 lbs multi AMA Maximum surface area wing stabilizer combined limited 150 din2 2325 sq Maximum loading wing stabilizer combined 100 g/dm 3276 oz/sq ft latter two specs no AMA limit heavy twin pair 60s therefore eligible Weight would need reduced engines changed pair 30s example large proportion Sport Scale models Continued page 111 Dan Santichs Heath Baby Bullet won first Precision Scale recent Tangerine Inter nats Powerplant twin-cylinder 4-cycle OS Gemini engine 12 cu displacement simulates Bristol Cherub twin used real thing 12 lb model flies well using 16-6 propeller Span 74 Take note complete cockpit detailing May1981 37 MIDWEST PRODUCtS COMPANY INC 400 S Indiana St Hobart IndIana 46342 219 942-1134 Send 50 catalog RC Old-Timer/Mathews Continued page 35 interplays between fathers Sons enjoyable facets hobby us sons have grown moved away might consider adopting some young man neighborhood work could benefit pur building benefit enthusiasm sharp eyesight Believe relationships can priceless Building Cay interested building fatted Cavalier Schmidt Custom Kits 119418 Franklin Blvd Elk Grove CA 95624 has semi-kit formers ribs no strip wood available plans available John PondPlans PO Box 3215 San Jose CA 95156 Might suggest consideration planking fuselage Sigs round-edge planking strips Ive used similar projects find works rather well combined cyanoacry late adhesiVes Jet Hot Stuff etc Planking such large area would certainly represent challenge beyond skill level average builder like SAM Champs Taft CA Free Flight capital world will scene SAM Champs 1981 dates June30 July 1 2 Tuesday Wednesday Thursday traditional SAM Champs dates permits driving contest nearly anywhere contiguous 48 Friday evening start used An extra day will available return home since following Monday holiday Accommodations will available dorms Taft Junior College On-field camp ing permitted list motels will published SAM Speaks time read John Targos will RC Contest Director RC Old Timer Alamo Nats writing early January have able definitely pin down location details RC SAM events will flown AMA Nats year Plan bring along ships smiling faces Well get together have good time Yall come now hear Dee B Mathews 506 South Walnut Greensburg KS 67054 RC Scale/Wischers Continued page 37 see competitions could used Precision Scale already meet FAI specifications Add few external details cockpit dummy engine ifnot already present plane ready go Panel lines allmetal plane rib tapes stitching working canopy working shock struts plus items Rivet detail should overdone Too large worse prototype flush riveting better attempt reproduce tiny ringlets simulated metal surface However model built increased fuselage length wing tail area modified airfoil section thicker wing tips decreased fuselage cross section expect large reduction static points because features measured Documentation AMA Precision Scale FAI F4C essentially similar no sixpage limit Sport Scale drawing can elaborate views needed views details shown better will serve proof authenticity Emphasis should visible structural features such rib No other prop pulls biggie like NATHRUST Thit new prop hub will fit above engines ones 5/1 6-24 shaft Boll plate serves asa drill jig tapped spinner bolt Only $1995ROUSH MFG Dealer & DistributorP0 Box 251 Inquiries WeltomeSandyville Ohio 44671 Now experience full motor potential Dynathwsts 100% accurate pitch airfoil Costs less buy fly because its unequaled durability 15 6 pitch $ 700 18 6 8 pitch $1000 20 8 10 pitch $1400 Prices include UPS charges MC 0 VISA S COD S CHECK S MO See dealer order direct DYNAThRUST PROPS INC - - 2541 NE 11th Court Pompano Beach Florida 33062 1-305-941-9119 Dealer Inquiries invited Hawoy HarjiT ILD TIllER KITS Full Partial Kits 41s Models--Full Rats--Gas Rubber 1940 Baby Buzzard Bombshell 36 020$1395 1941 Lambs camber 44 Span Rubber$1495 1039 Kords Wakefield 44 Rubber Cabin$1495 & R Models-Full Kits- 020 Replica 1942 Brooklyn Oodger 32 Span$1295 1940 So Long 32 Span$1295 Tyrs Models--Full Kit--0A TEXACO RIC 1939 Bay Ridge Mike 491 049099$2995 P & W Semi-Kits--Rib Tip Fomer Kits 1937 Dallaire Sportater-109 Span Plan Ext$2600 Companion Stripwood Kit Dallaire--$3500 1940 Sailplane Comet-79 Wing Plan ExI $4150 Companion Stripmood Kit Sailplane--$26 30 [Plana Dallaire$5 00 Sailplane Wing$3 00] Midway Model Co --Full Partial Kits Rib Tip Former Kits--Machine Cut Parts 1930 Flying Quaker 04 Cabin Plan IncI $2150 1937 Quaker Flash 67 Cabin Plan Inol $1750 1937 Long Cabin 79 Plan ExtraS5l0 $1500 Repaca Old Timers- 020 Gas Electric 1940 Buzzard Bombshell 30 Span PP $1195 1940 Scientific Mercury 36 PP tChR/C $1395 1941 Request 30 Span PP $1295 Old Time R/C Sport--Full Kits--2-3 Ch R/C 1938 Powerhouse 50 engines $3596 1939 Air Trails Sportster 50 10 15 eng $3596 BOOKS ON OLD TIMER MODELS NEW--1934 Zaic Year Book $550 Antique Old Timer Model Air Craft $1090 Air Age Gas Models MAN Reqmnta $395 FREE FLIGHT KITS Sport Scale Sparkey Comet 30 Span Old Time Rubber $449 Maverick RIN 30 Span Coupe Rubber $1340 Lacy M10 Peck Peanut Scale $440 Satellite 450 4Ka 56 Span 1530 eng $2595 ILECTRIC SYSTEMS AND KITS Astro 95 System Wired $5995 SPECIAL $47 96] Astro 19 System Wired $1l995SPEClAL5 $9S961 Astro Sport Kit 05 23 Ch R/C $2120 Quiet Revolution Book S59SESPECIAL5$5001 ihipping Handling 59 Pegs CATALOGUE Jp ro $890 add $150 $100 PP copy sill $091 $2000 add $225 sent free upon $2001 $6500 add $300 request orderl $9501 $7000 add $150 Hobby Horn nd over $7000 add 5009 PO Box 3009 Addressees add 6% Seal Beach Ca 90780 tales Tax Send MO CK 7141 094-0223Best VisaIMC 0EXP mornings recorder--i COD-Exact Chg-i$l50 Hdl activates 5 rlngal May1981 111 00 00 NEW 00 6gOLT pROP yUI Quadra McCulloch Super Hustler ANNOUNCING THE INTRODUCTION OF THE ALL NEW NELSON COMPETITION NGINE STANDARD AND R/C AVAILABLE JUNE 1 1981 complete formation send large stamped self-addressed envelope Kustom Kraftsmanship PO Box 2699 Laguna Hills CA 92653 Dealer inquiries invited fiGTfldO PROPELLERS Made polyester boil color Go GRISH propeller True helical pitch airfoil win-power 2 Blade Tractor 5-3each 6-45 354ScSizes pitches 63 64USc 7476 78Kgstyles 848-6 8SUe 949-69-7 98104106Kgneeds 114116118 *1 12412-512-6*180 2 Blade PusheAT YOUR DEALER 5446-36-4SOc 8-6Sc 9-610-6*1 3 Blade Tractor 5-36-364 USc 3 Blade Pushe 6-3 Metallic Aluminum Color Tractor 1678i 8688*13 96 106104*160 Pusher106*180 locations panel lines stringers Dimensions utmost importance will used checking scale rule must furnished contestant taking dimensions drawing AMA contests rule should graduated inches modeler makes team will need new rule metric graduations use World Championships Photographic evidence authenticity should arranged booklet orderly manner beginning photos complete plane including subdivisions fuselage wing tail surfaces landing gear engine cowl cockpit cabin finish color markings color paint chips best Color photos can used too often misleading AMA rule book does limit quantity photos FAI specifies three maximum above items Most important dont GRISH LARGE WOOD PROPELLERS HARDWOOD too hard minimizes chance costly plane engine damage True pitch airfoil fully finished balanced ready coating 3/8 BOREALL SIZES IN18 57 6 8 & 10 PITCH 20 8 22 10 24 13 NEW SIZE IN 8 & 10 PITCH 26 $16 RIGHT HAND TRACTOR RUSH BROS 6ST JOHN INDIANA 46373 use photos showing details omitted model Keep mind judges will show preference photo rather drawing outlines plane photos drawing dont agree mark drawing corrections Sport Scale 10-minute time limit flight Precision no limit Precision has five extra mandatory maneuvers proto taxi traffic pattern approach landing landing per fection spot landing proto taxi hanger addition two extra options Except spot landing very demanding pilot agreed designing building flying Scale model aircraft easy Accumulation documentation adds burden spite Scale brings great personal satisfaction excitement winning place team ranks highlight modeling experience regular communications AMA HQ about com ing trip foreign land actual travel seeing firsthand models other nations meeting modelers competition lasting memories Expense contestant need great funds cover transportation entry fees meals lodging meet well some additional cash team fund derived sale patches donations case Dolly pays own way wives some other contestants think trip adventure chance see some world has very rewarding experience know deserving model ers could become team members minimum additional effort Documentation source letter Richard Burkett informs us drawing source Cartographic Division National Archives has microfilm complete construction blue prints airplane US government has ever owned anyone wants use service should call write first drawings still classified PBY Catalina example have approximately 20 films over 100 frames film cost per print 10t 11-in x 17-in size 25t 18-in x 24-in National Archives Cartographic Division 7th Constitution NW Washington DC 20408 Bob Dolly Wiseher Rt 1 S-22lLapham Peak Road Delafield WI 53018 RC Helicopters/Chesney Continued page 38 setup preflight checking problem solving fact What check after mishap included 60-sized collectivepitch machine Horizon amazingly simple Several clever construction setup proce dures employed including pitch gauge made say wish thought Total time spent construction setup about 20 hours Although Horizon frame tube machine inclusion side cowling pleasing front body sub-fin main fin make machine stand out very stylish bit futuristic-looking Horizon flybarless machine main rotor diameter 53 operating approximately 1575 rpm main blades require approximately one-and-a-half ounces weight tip compensate lack flybar weights go slot milled back side hardwood leading edge balsa trailing edge place weights entirely enclosed Properly installed method insures no chance weights coming out tail rotor blades made wood rather plastic probably provide lower inertia force ball bearings used Horizon double shielded Thrust bearings well double ball bearings used blade holders engine mounts horizontally facing rearwards connected clutch through drive belt three-blade fan used pull air through side cowling engine cooling method cooling has proven very effective fuel tank mounted cowling opposite engine located center gravity well center carburetor tail rotor driven speedometer-type cable such way require gears eliminates considerable friction well parts system necessary disengage tail rotor system autorotations 112 Model Aviation 3
Edition: Model Aviation - 1981/05
Page Numbers: 36, 37, 111, 112
Radio ConErot Scale Bob & Dolly Wischer HEATH Baby Bullet column often include photos unusual models rallies contests trade shows some come mail Invariably photos bring responses readers requesting formation whereabouts builders drawings could obtained duplication model sad fact seldom know builders home address certain drawings offered available Photos Heath Baby Bullet arrived Dan Santich modeler years letter follows match made heaven 05 120 four-cycle engine i-scale Baby Bullet Seems Except FAI Scale meets qualifications Precision Sport Giant Scale Dimensions 74-in span 589-in length 1036 sq wing area 12 lbs dry weight Flies very sweet 16-6 prop qualify FAI will have bury 60 inverted prop drive make dummy cylinders What shame Gemini engine such beautiful piece work thats precarious position FAI AMA Scale Having flown Sport Scale long quite different sensation see tape measure put model recently won first place Precision Scale Tangerine Internats Orlando also high static score lot models entered Sport Scale would have done quite well Precision What does take cross line As far models much think mental decision am process making full-size draw ings Bullet available readers interested can give address like Dan B Santich Rt 1 Box 12 King NC 27021 International Competition have Sport Scale modelers asking information converting Precision Scale approach another Nats team selection 1982 World Championships good time consider what can done enhance chances winning time writing seems Precision RC Scale team Control Line Scale team will selected because host Soviet Union model aero club has elected include Stand-off Scale 1982 eligible team model must conform FAI rules differences between FAI AMA follow Engine displacement FM limited total 61 cu regardless number engines compared 125 cu AMA models Weight model singie multi-engine fuel limited 6 kg 36 Model Aviation Carl Skiba scratch-builtthis Westland Lysander Bob Holmans elite plans Spanning 8-ft covered dress-backing material finished Aero Gloss dope An OS Max 60 flies Carl second person right S Tom Hyans Sopwith 112-Strutter originated English Veron kit Supertigre 23 powers Covering material Sigs Koverall matte Hobbypoxy over dope Tony Van Ecks Vought Corsair A7 Sterner Engineering kit uses Scozzi ducted fan unit K&B 75cc engine Acrylic finish 126 lb plane excellent 1322 lbs compared 15 lbs single 20 lbs multi AMA Maximum surface area wing stabilizer combined limited 150 din2 2325 sq Maximum loading wing stabilizer combined 100 g/dm 3276 oz/sq ft latter two specs no AMA limit heavy twin pair 60s therefore eligible Weight would need reduced engines changed pair 30s example large proportion Sport Scale models Continued page 111 Dan Santichs Heath Baby Bullet won first Precision Scale recent Tangerine Inter nats Powerplant twin-cylinder 4-cycle OS Gemini engine 12 cu displacement simulates Bristol Cherub twin used real thing 12 lb model flies well using 16-6 propeller Span 74 Take note complete cockpit detailing May1981 37 MIDWEST PRODUCtS COMPANY INC 400 S Indiana St Hobart IndIana 46342 219 942-1134 Send 50 catalog RC Old-Timer/Mathews Continued page 35 interplays between fathers Sons enjoyable facets hobby us sons have grown moved away might consider adopting some young man neighborhood work could benefit pur building benefit enthusiasm sharp eyesight Believe relationships can priceless Building Cay interested building fatted Cavalier Schmidt Custom Kits 119418 Franklin Blvd Elk Grove CA 95624 has semi-kit formers ribs no strip wood available plans available John PondPlans PO Box 3215 San Jose CA 95156 Might suggest consideration planking fuselage Sigs round-edge planking strips Ive used similar projects find works rather well combined cyanoacry late adhesiVes Jet Hot Stuff etc Planking such large area would certainly represent challenge beyond skill level average builder like SAM Champs Taft CA Free Flight capital world will scene SAM Champs 1981 dates June30 July 1 2 Tuesday Wednesday Thursday traditional SAM Champs dates permits driving contest nearly anywhere contiguous 48 Friday evening start used An extra day will available return home since following Monday holiday Accommodations will available dorms Taft Junior College On-field camp ing permitted list motels will published SAM Speaks time read John Targos will RC Contest Director RC Old Timer Alamo Nats writing early January have able definitely pin down location details RC SAM events will flown AMA Nats year Plan bring along ships smiling faces Well get together have good time Yall come now hear Dee B Mathews 506 South Walnut Greensburg KS 67054 RC Scale/Wischers Continued page 37 see competitions could used Precision Scale already meet FAI specifications Add few external details cockpit dummy engine ifnot already present plane ready go Panel lines allmetal plane rib tapes stitching working canopy working shock struts plus items Rivet detail should overdone Too large worse prototype flush riveting better attempt reproduce tiny ringlets simulated metal surface However model built increased fuselage length wing tail area modified airfoil section thicker wing tips decreased fuselage cross section expect large reduction static points because features measured Documentation AMA Precision Scale FAI F4C essentially similar no sixpage limit Sport Scale drawing can elaborate views needed views details shown better will serve proof authenticity Emphasis should visible structural features such rib No other prop pulls biggie like NATHRUST Thit new prop hub will fit above engines ones 5/1 6-24 shaft Boll plate serves asa drill jig tapped spinner bolt Only $1995ROUSH MFG Dealer & DistributorP0 Box 251 Inquiries WeltomeSandyville Ohio 44671 Now experience full motor potential Dynathwsts 100% accurate pitch airfoil Costs less buy fly because its unequaled durability 15 6 pitch $ 700 18 6 8 pitch $1000 20 8 10 pitch $1400 Prices include UPS charges MC 0 VISA S COD S CHECK S MO See dealer order direct DYNAThRUST PROPS INC - - 2541 NE 11th Court Pompano Beach Florida 33062 1-305-941-9119 Dealer Inquiries invited Hawoy HarjiT ILD TIllER KITS Full Partial Kits 41s Models--Full Rats--Gas Rubber 1940 Baby Buzzard Bombshell 36 020$1395 1941 Lambs camber 44 Span Rubber$1495 1039 Kords Wakefield 44 Rubber Cabin$1495 & R Models-Full Kits- 020 Replica 1942 Brooklyn Oodger 32 Span$1295 1940 So Long 32 Span$1295 Tyrs Models--Full Kit--0A TEXACO RIC 1939 Bay Ridge Mike 491 049099$2995 P & W Semi-Kits--Rib Tip Fomer Kits 1937 Dallaire Sportater-109 Span Plan Ext$2600 Companion Stripwood Kit Dallaire--$3500 1940 Sailplane Comet-79 Wing Plan ExI $4150 Companion Stripmood Kit Sailplane--$26 30 [Plana Dallaire$5 00 Sailplane Wing$3 00] Midway Model Co --Full Partial Kits Rib Tip Former Kits--Machine Cut Parts 1930 Flying Quaker 04 Cabin Plan IncI $2150 1937 Quaker Flash 67 Cabin Plan Inol $1750 1937 Long Cabin 79 Plan ExtraS5l0 $1500 Repaca Old Timers- 020 Gas Electric 1940 Buzzard Bombshell 30 Span PP $1195 1940 Scientific Mercury 36 PP tChR/C $1395 1941 Request 30 Span PP $1295 Old Time R/C Sport--Full Kits--2-3 Ch R/C 1938 Powerhouse 50 engines $3596 1939 Air Trails Sportster 50 10 15 eng $3596 BOOKS ON OLD TIMER MODELS NEW--1934 Zaic Year Book $550 Antique Old Timer Model Air Craft $1090 Air Age Gas Models MAN Reqmnta $395 FREE FLIGHT KITS Sport Scale Sparkey Comet 30 Span Old Time Rubber $449 Maverick RIN 30 Span Coupe Rubber $1340 Lacy M10 Peck Peanut Scale $440 Satellite 450 4Ka 56 Span 1530 eng $2595 ILECTRIC SYSTEMS AND KITS Astro 95 System Wired $5995 SPECIAL $47 96] Astro 19 System Wired $1l995SPEClAL5 $9S961 Astro Sport Kit 05 23 Ch R/C $2120 Quiet Revolution Book S59SESPECIAL5$5001 ihipping Handling 59 Pegs CATALOGUE Jp ro $890 add $150 $100 PP copy sill $091 $2000 add $225 sent free upon $2001 $6500 add $300 request orderl $9501 $7000 add $150 Hobby Horn nd over $7000 add 5009 PO Box 3009 Addressees add 6% Seal Beach Ca 90780 tales Tax Send MO CK 7141 094-0223Best VisaIMC 0EXP mornings recorder--i COD-Exact Chg-i$l50 Hdl activates 5 rlngal May1981 111 00 00 NEW 00 6gOLT pROP yUI Quadra McCulloch Super Hustler ANNOUNCING THE INTRODUCTION OF THE ALL NEW NELSON COMPETITION NGINE STANDARD AND R/C AVAILABLE JUNE 1 1981 complete formation send large stamped self-addressed envelope Kustom Kraftsmanship PO Box 2699 Laguna Hills CA 92653 Dealer inquiries invited fiGTfldO PROPELLERS Made polyester boil color Go GRISH propeller True helical pitch airfoil win-power 2 Blade Tractor 5-3each 6-45 354ScSizes pitches 63 64USc 7476 78Kgstyles 848-6 8SUe 949-69-7 98104106Kgneeds 114116118 *1 12412-512-6*180 2 Blade PusheAT YOUR DEALER 5446-36-4SOc 8-6Sc 9-610-6*1 3 Blade Tractor 5-36-364 USc 3 Blade Pushe 6-3 Metallic Aluminum Color Tractor 1678i 8688*13 96 106104*160 Pusher106*180 locations panel lines stringers Dimensions utmost importance will used checking scale rule must furnished contestant taking dimensions drawing AMA contests rule should graduated inches modeler makes team will need new rule metric graduations use World Championships Photographic evidence authenticity should arranged booklet orderly manner beginning photos complete plane including subdivisions fuselage wing tail surfaces landing gear engine cowl cockpit cabin finish color markings color paint chips best Color photos can used too often misleading AMA rule book does limit quantity photos FAI specifies three maximum above items Most important dont GRISH LARGE WOOD PROPELLERS HARDWOOD too hard minimizes chance costly plane engine damage True pitch airfoil fully finished balanced ready coating 3/8 BOREALL SIZES IN18 57 6 8 & 10 PITCH 20 8 22 10 24 13 NEW SIZE IN 8 & 10 PITCH 26 $16 RIGHT HAND TRACTOR RUSH BROS 6ST JOHN INDIANA 46373 use photos showing details omitted model Keep mind judges will show preference photo rather drawing outlines plane photos drawing dont agree mark drawing corrections Sport Scale 10-minute time limit flight Precision no limit Precision has five extra mandatory maneuvers proto taxi traffic pattern approach landing landing per fection spot landing proto taxi hanger addition two extra options Except spot landing very demanding pilot agreed designing building flying Scale model aircraft easy Accumulation documentation adds burden spite Scale brings great personal satisfaction excitement winning place team ranks highlight modeling experience regular communications AMA HQ about com ing trip foreign land actual travel seeing firsthand models other nations meeting modelers competition lasting memories Expense contestant need great funds cover transportation entry fees meals lodging meet well some additional cash team fund derived sale patches donations case Dolly pays own way wives some other contestants think trip adventure chance see some world has very rewarding experience know deserving model ers could become team members minimum additional effort Documentation source letter Richard Burkett informs us drawing source Cartographic Division National Archives has microfilm complete construction blue prints airplane US government has ever owned anyone wants use service should call write first drawings still classified PBY Catalina example have approximately 20 films over 100 frames film cost per print 10t 11-in x 17-in size 25t 18-in x 24-in National Archives Cartographic Division 7th Constitution NW Washington DC 20408 Bob Dolly Wiseher Rt 1 S-22lLapham Peak Road Delafield WI 53018 RC Helicopters/Chesney Continued page 38 setup preflight checking problem solving fact What check after mishap included 60-sized collectivepitch machine Horizon amazingly simple Several clever construction setup proce dures employed including pitch gauge made say wish thought Total time spent construction setup about 20 hours Although Horizon frame tube machine inclusion side cowling pleasing front body sub-fin main fin make machine stand out very stylish bit futuristic-looking Horizon flybarless machine main rotor diameter 53 operating approximately 1575 rpm main blades require approximately one-and-a-half ounces weight tip compensate lack flybar weights go slot milled back side hardwood leading edge balsa trailing edge place weights entirely enclosed Properly installed method insures no chance weights coming out tail rotor blades made wood rather plastic probably provide lower inertia force ball bearings used Horizon double shielded Thrust bearings well double ball bearings used blade holders engine mounts horizontally facing rearwards connected clutch through drive belt three-blade fan used pull air through side cowling engine cooling method cooling has proven very effective fuel tank mounted cowling opposite engine located center gravity well center carburetor tail rotor driven speedometer-type cable such way require gears eliminates considerable friction well parts system necessary disengage tail rotor system autorotations 112 Model Aviation 3
Edition: Model Aviation - 1981/05
Page Numbers: 36, 37, 111, 112
Radio ConErot Scale Bob & Dolly Wischer HEATH Baby Bullet column often include photos unusual models rallies contests trade shows some come mail Invariably photos bring responses readers requesting formation whereabouts builders drawings could obtained duplication model sad fact seldom know builders home address certain drawings offered available Photos Heath Baby Bullet arrived Dan Santich modeler years letter follows match made heaven 05 120 four-cycle engine i-scale Baby Bullet Seems Except FAI Scale meets qualifications Precision Sport Giant Scale Dimensions 74-in span 589-in length 1036 sq wing area 12 lbs dry weight Flies very sweet 16-6 prop qualify FAI will have bury 60 inverted prop drive make dummy cylinders What shame Gemini engine such beautiful piece work thats precarious position FAI AMA Scale Having flown Sport Scale long quite different sensation see tape measure put model recently won first place Precision Scale Tangerine Internats Orlando also high static score lot models entered Sport Scale would have done quite well Precision What does take cross line As far models much think mental decision am process making full-size draw ings Bullet available readers interested can give address like Dan B Santich Rt 1 Box 12 King NC 27021 International Competition have Sport Scale modelers asking information converting Precision Scale approach another Nats team selection 1982 World Championships good time consider what can done enhance chances winning time writing seems Precision RC Scale team Control Line Scale team will selected because host Soviet Union model aero club has elected include Stand-off Scale 1982 eligible team model must conform FAI rules differences between FAI AMA follow Engine displacement FM limited total 61 cu regardless number engines compared 125 cu AMA models Weight model singie multi-engine fuel limited 6 kg 36 Model Aviation Carl Skiba scratch-builtthis Westland Lysander Bob Holmans elite plans Spanning 8-ft covered dress-backing material finished Aero Gloss dope An OS Max 60 flies Carl second person right S Tom Hyans Sopwith 112-Strutter originated English Veron kit Supertigre 23 powers Covering material Sigs Koverall matte Hobbypoxy over dope Tony Van Ecks Vought Corsair A7 Sterner Engineering kit uses Scozzi ducted fan unit K&B 75cc engine Acrylic finish 126 lb plane excellent 1322 lbs compared 15 lbs single 20 lbs multi AMA Maximum surface area wing stabilizer combined limited 150 din2 2325 sq Maximum loading wing stabilizer combined 100 g/dm 3276 oz/sq ft latter two specs no AMA limit heavy twin pair 60s therefore eligible Weight would need reduced engines changed pair 30s example large proportion Sport Scale models Continued page 111 Dan Santichs Heath Baby Bullet won first Precision Scale recent Tangerine Inter nats Powerplant twin-cylinder 4-cycle OS Gemini engine 12 cu displacement simulates Bristol Cherub twin used real thing 12 lb model flies well using 16-6 propeller Span 74 Take note complete cockpit detailing May1981 37 MIDWEST PRODUCtS COMPANY INC 400 S Indiana St Hobart IndIana 46342 219 942-1134 Send 50 catalog RC Old-Timer/Mathews Continued page 35 interplays between fathers Sons enjoyable facets hobby us sons have grown moved away might consider adopting some young man neighborhood work could benefit pur building benefit enthusiasm sharp eyesight Believe relationships can priceless Building Cay interested building fatted Cavalier Schmidt Custom Kits 119418 Franklin Blvd Elk Grove CA 95624 has semi-kit formers ribs no strip wood available plans available John PondPlans PO Box 3215 San Jose CA 95156 Might suggest consideration planking fuselage Sigs round-edge planking strips Ive used similar projects find works rather well combined cyanoacry late adhesiVes Jet Hot Stuff etc Planking such large area would certainly represent challenge beyond skill level average builder like SAM Champs Taft CA Free Flight capital world will scene SAM Champs 1981 dates June30 July 1 2 Tuesday Wednesday Thursday traditional SAM Champs dates permits driving contest nearly anywhere contiguous 48 Friday evening start used An extra day will available return home since following Monday holiday Accommodations will available dorms Taft Junior College On-field camp ing permitted list motels will published SAM Speaks time read John Targos will RC Contest Director RC Old Timer Alamo Nats writing early January have able definitely pin down location details RC SAM events will flown AMA Nats year Plan bring along ships smiling faces Well get together have good time Yall come now hear Dee B Mathews 506 South Walnut Greensburg KS 67054 RC Scale/Wischers Continued page 37 see competitions could used Precision Scale already meet FAI specifications Add few external details cockpit dummy engine ifnot already present plane ready go Panel lines allmetal plane rib tapes stitching working canopy working shock struts plus items Rivet detail should overdone Too large worse prototype flush riveting better attempt reproduce tiny ringlets simulated metal surface However model built increased fuselage length wing tail area modified airfoil section thicker wing tips decreased fuselage cross section expect large reduction static points because features measured Documentation AMA Precision Scale FAI F4C essentially similar no sixpage limit Sport Scale drawing can elaborate views needed views details shown better will serve proof authenticity Emphasis should visible structural features such rib No other prop pulls biggie like NATHRUST Thit new prop hub will fit above engines ones 5/1 6-24 shaft Boll plate serves asa drill jig tapped spinner bolt Only $1995ROUSH MFG Dealer & DistributorP0 Box 251 Inquiries WeltomeSandyville Ohio 44671 Now experience full motor potential Dynathwsts 100% accurate pitch airfoil Costs less buy fly because its unequaled durability 15 6 pitch $ 700 18 6 8 pitch $1000 20 8 10 pitch $1400 Prices include UPS charges MC 0 VISA S COD S CHECK S MO See dealer order direct DYNAThRUST PROPS INC - - 2541 NE 11th Court Pompano Beach Florida 33062 1-305-941-9119 Dealer Inquiries invited Hawoy HarjiT ILD TIllER KITS Full Partial Kits 41s Models--Full Rats--Gas Rubber 1940 Baby Buzzard Bombshell 36 020$1395 1941 Lambs camber 44 Span Rubber$1495 1039 Kords Wakefield 44 Rubber Cabin$1495 & R Models-Full Kits- 020 Replica 1942 Brooklyn Oodger 32 Span$1295 1940 So Long 32 Span$1295 Tyrs Models--Full Kit--0A TEXACO RIC 1939 Bay Ridge Mike 491 049099$2995 P & W Semi-Kits--Rib Tip Fomer Kits 1937 Dallaire Sportater-109 Span Plan Ext$2600 Companion Stripwood Kit Dallaire--$3500 1940 Sailplane Comet-79 Wing Plan ExI $4150 Companion Stripmood Kit Sailplane--$26 30 [Plana Dallaire$5 00 Sailplane Wing$3 00] Midway Model Co --Full Partial Kits Rib Tip Former Kits--Machine Cut Parts 1930 Flying Quaker 04 Cabin Plan IncI $2150 1937 Quaker Flash 67 Cabin Plan Inol $1750 1937 Long Cabin 79 Plan ExtraS5l0 $1500 Repaca Old Timers- 020 Gas Electric 1940 Buzzard Bombshell 30 Span PP $1195 1940 Scientific Mercury 36 PP tChR/C $1395 1941 Request 30 Span PP $1295 Old Time R/C Sport--Full Kits--2-3 Ch R/C 1938 Powerhouse 50 engines $3596 1939 Air Trails Sportster 50 10 15 eng $3596 BOOKS ON OLD TIMER MODELS NEW--1934 Zaic Year Book $550 Antique Old Timer Model Air Craft $1090 Air Age Gas Models MAN Reqmnta $395 FREE FLIGHT KITS Sport Scale Sparkey Comet 30 Span Old Time Rubber $449 Maverick RIN 30 Span Coupe Rubber $1340 Lacy M10 Peck Peanut Scale $440 Satellite 450 4Ka 56 Span 1530 eng $2595 ILECTRIC SYSTEMS AND KITS Astro 95 System Wired $5995 SPECIAL $47 96] Astro 19 System Wired $1l995SPEClAL5 $9S961 Astro Sport Kit 05 23 Ch R/C $2120 Quiet Revolution Book S59SESPECIAL5$5001 ihipping Handling 59 Pegs CATALOGUE Jp ro $890 add $150 $100 PP copy sill $091 $2000 add $225 sent free upon $2001 $6500 add $300 request orderl $9501 $7000 add $150 Hobby Horn nd over $7000 add 5009 PO Box 3009 Addressees add 6% Seal Beach Ca 90780 tales Tax Send MO CK 7141 094-0223Best VisaIMC 0EXP mornings recorder--i COD-Exact Chg-i$l50 Hdl activates 5 rlngal May1981 111 00 00 NEW 00 6gOLT pROP yUI Quadra McCulloch Super Hustler ANNOUNCING THE INTRODUCTION OF THE ALL NEW NELSON COMPETITION NGINE STANDARD AND R/C AVAILABLE JUNE 1 1981 complete formation send large stamped self-addressed envelope Kustom Kraftsmanship PO Box 2699 Laguna Hills CA 92653 Dealer inquiries invited fiGTfldO PROPELLERS Made polyester boil color Go GRISH propeller True helical pitch airfoil win-power 2 Blade Tractor 5-3each 6-45 354ScSizes pitches 63 64USc 7476 78Kgstyles 848-6 8SUe 949-69-7 98104106Kgneeds 114116118 *1 12412-512-6*180 2 Blade PusheAT YOUR DEALER 5446-36-4SOc 8-6Sc 9-610-6*1 3 Blade Tractor 5-36-364 USc 3 Blade Pushe 6-3 Metallic Aluminum Color Tractor 1678i 8688*13 96 106104*160 Pusher106*180 locations panel lines stringers Dimensions utmost importance will used checking scale rule must furnished contestant taking dimensions drawing AMA contests rule should graduated inches modeler makes team will need new rule metric graduations use World Championships Photographic evidence authenticity should arranged booklet orderly manner beginning photos complete plane including subdivisions fuselage wing tail surfaces landing gear engine cowl cockpit cabin finish color markings color paint chips best Color photos can used too often misleading AMA rule book does limit quantity photos FAI specifies three maximum above items Most important dont GRISH LARGE WOOD PROPELLERS HARDWOOD too hard minimizes chance costly plane engine damage True pitch airfoil fully finished balanced ready coating 3/8 BOREALL SIZES IN18 57 6 8 & 10 PITCH 20 8 22 10 24 13 NEW SIZE IN 8 & 10 PITCH 26 $16 RIGHT HAND TRACTOR RUSH BROS 6ST JOHN INDIANA 46373 use photos showing details omitted model Keep mind judges will show preference photo rather drawing outlines plane photos drawing dont agree mark drawing corrections Sport Scale 10-minute time limit flight Precision no limit Precision has five extra mandatory maneuvers proto taxi traffic pattern approach landing landing per fection spot landing proto taxi hanger addition two extra options Except spot landing very demanding pilot agreed designing building flying Scale model aircraft easy Accumulation documentation adds burden spite Scale brings great personal satisfaction excitement winning place team ranks highlight modeling experience regular communications AMA HQ about com ing trip foreign land actual travel seeing firsthand models other nations meeting modelers competition lasting memories Expense contestant need great funds cover transportation entry fees meals lodging meet well some additional cash team fund derived sale patches donations case Dolly pays own way wives some other contestants think trip adventure chance see some world has very rewarding experience know deserving model ers could become team members minimum additional effort Documentation source letter Richard Burkett informs us drawing source Cartographic Division National Archives has microfilm complete construction blue prints airplane US government has ever owned anyone wants use service should call write first drawings still classified PBY Catalina example have approximately 20 films over 100 frames film cost per print 10t 11-in x 17-in size 25t 18-in x 24-in National Archives Cartographic Division 7th Constitution NW Washington DC 20408 Bob Dolly Wiseher Rt 1 S-22lLapham Peak Road Delafield WI 53018 RC Helicopters/Chesney Continued page 38 setup preflight checking problem solving fact What check after mishap included 60-sized collectivepitch machine Horizon amazingly simple Several clever construction setup proce dures employed including pitch gauge made say wish thought Total time spent construction setup about 20 hours Although Horizon frame tube machine inclusion side cowling pleasing front body sub-fin main fin make machine stand out very stylish bit futuristic-looking Horizon flybarless machine main rotor diameter 53 operating approximately 1575 rpm main blades require approximately one-and-a-half ounces weight tip compensate lack flybar weights go slot milled back side hardwood leading edge balsa trailing edge place weights entirely enclosed Properly installed method insures no chance weights coming out tail rotor blades made wood rather plastic probably provide lower inertia force ball bearings used Horizon double shielded Thrust bearings well double ball bearings used blade holders engine mounts horizontally facing rearwards connected clutch through drive belt three-blade fan used pull air through side cowling engine cooling method cooling has proven very effective fuel tank mounted cowling opposite engine located center gravity well center carburetor tail rotor driven speedometer-type cable such way require gears eliminates considerable friction well parts system necessary disengage tail rotor system autorotations 112 Model Aviation 3
Edition: Model Aviation - 1981/05
Page Numbers: 36, 37, 111, 112
Radio ConErot Scale Bob & Dolly Wischer HEATH Baby Bullet column often include photos unusual models rallies contests trade shows some come mail Invariably photos bring responses readers requesting formation whereabouts builders drawings could obtained duplication model sad fact seldom know builders home address certain drawings offered available Photos Heath Baby Bullet arrived Dan Santich modeler years letter follows match made heaven 05 120 four-cycle engine i-scale Baby Bullet Seems Except FAI Scale meets qualifications Precision Sport Giant Scale Dimensions 74-in span 589-in length 1036 sq wing area 12 lbs dry weight Flies very sweet 16-6 prop qualify FAI will have bury 60 inverted prop drive make dummy cylinders What shame Gemini engine such beautiful piece work thats precarious position FAI AMA Scale Having flown Sport Scale long quite different sensation see tape measure put model recently won first place Precision Scale Tangerine Internats Orlando also high static score lot models entered Sport Scale would have done quite well Precision What does take cross line As far models much think mental decision am process making full-size draw ings Bullet available readers interested can give address like Dan B Santich Rt 1 Box 12 King NC 27021 International Competition have Sport Scale modelers asking information converting Precision Scale approach another Nats team selection 1982 World Championships good time consider what can done enhance chances winning time writing seems Precision RC Scale team Control Line Scale team will selected because host Soviet Union model aero club has elected include Stand-off Scale 1982 eligible team model must conform FAI rules differences between FAI AMA follow Engine displacement FM limited total 61 cu regardless number engines compared 125 cu AMA models Weight model singie multi-engine fuel limited 6 kg 36 Model Aviation Carl Skiba scratch-builtthis Westland Lysander Bob Holmans elite plans Spanning 8-ft covered dress-backing material finished Aero Gloss dope An OS Max 60 flies Carl second person right S Tom Hyans Sopwith 112-Strutter originated English Veron kit Supertigre 23 powers Covering material Sigs Koverall matte Hobbypoxy over dope Tony Van Ecks Vought Corsair A7 Sterner Engineering kit uses Scozzi ducted fan unit K&B 75cc engine Acrylic finish 126 lb plane excellent 1322 lbs compared 15 lbs single 20 lbs multi AMA Maximum surface area wing stabilizer combined limited 150 din2 2325 sq Maximum loading wing stabilizer combined 100 g/dm 3276 oz/sq ft latter two specs no AMA limit heavy twin pair 60s therefore eligible Weight would need reduced engines changed pair 30s example large proportion Sport Scale models Continued page 111 Dan Santichs Heath Baby Bullet won first Precision Scale recent Tangerine Inter nats Powerplant twin-cylinder 4-cycle OS Gemini engine 12 cu displacement simulates Bristol Cherub twin used real thing 12 lb model flies well using 16-6 propeller Span 74 Take note complete cockpit detailing May1981 37 MIDWEST PRODUCtS COMPANY INC 400 S Indiana St Hobart IndIana 46342 219 942-1134 Send 50 catalog RC Old-Timer/Mathews Continued page 35 interplays between fathers Sons enjoyable facets hobby us sons have grown moved away might consider adopting some young man neighborhood work could benefit pur building benefit enthusiasm sharp eyesight Believe relationships can priceless Building Cay interested building fatted Cavalier Schmidt Custom Kits 119418 Franklin Blvd Elk Grove CA 95624 has semi-kit formers ribs no strip wood available plans available John PondPlans PO Box 3215 San Jose CA 95156 Might suggest consideration planking fuselage Sigs round-edge planking strips Ive used similar projects find works rather well combined cyanoacry late adhesiVes Jet Hot Stuff etc Planking such large area would certainly represent challenge beyond skill level average builder like SAM Champs Taft CA Free Flight capital world will scene SAM Champs 1981 dates June30 July 1 2 Tuesday Wednesday Thursday traditional SAM Champs dates permits driving contest nearly anywhere contiguous 48 Friday evening start used An extra day will available return home since following Monday holiday Accommodations will available dorms Taft Junior College On-field camp ing permitted list motels will published SAM Speaks time read John Targos will RC Contest Director RC Old Timer Alamo Nats writing early January have able definitely pin down location details RC SAM events will flown AMA Nats year Plan bring along ships smiling faces Well get together have good time Yall come now hear Dee B Mathews 506 South Walnut Greensburg KS 67054 RC Scale/Wischers Continued page 37 see competitions could used Precision Scale already meet FAI specifications Add few external details cockpit dummy engine ifnot already present plane ready go Panel lines allmetal plane rib tapes stitching working canopy working shock struts plus items Rivet detail should overdone Too large worse prototype flush riveting better attempt reproduce tiny ringlets simulated metal surface However model built increased fuselage length wing tail area modified airfoil section thicker wing tips decreased fuselage cross section expect large reduction static points because features measured Documentation AMA Precision Scale FAI F4C essentially similar no sixpage limit Sport Scale drawing can elaborate views needed views details shown better will serve proof authenticity Emphasis should visible structural features such rib No other prop pulls biggie like NATHRUST Thit new prop hub will fit above engines ones 5/1 6-24 shaft Boll plate serves asa drill jig tapped spinner bolt Only $1995ROUSH MFG Dealer & DistributorP0 Box 251 Inquiries WeltomeSandyville Ohio 44671 Now experience full motor potential Dynathwsts 100% accurate pitch airfoil Costs less buy fly because its unequaled durability 15 6 pitch $ 700 18 6 8 pitch $1000 20 8 10 pitch $1400 Prices include UPS charges MC 0 VISA S COD S CHECK S MO See dealer order direct DYNAThRUST PROPS INC - - 2541 NE 11th Court Pompano Beach Florida 33062 1-305-941-9119 Dealer Inquiries invited Hawoy HarjiT ILD TIllER KITS Full Partial Kits 41s Models--Full Rats--Gas Rubber 1940 Baby Buzzard Bombshell 36 020$1395 1941 Lambs camber 44 Span Rubber$1495 1039 Kords Wakefield 44 Rubber Cabin$1495 & R Models-Full Kits- 020 Replica 1942 Brooklyn Oodger 32 Span$1295 1940 So Long 32 Span$1295 Tyrs Models--Full Kit--0A TEXACO RIC 1939 Bay Ridge Mike 491 049099$2995 P & W Semi-Kits--Rib Tip Fomer Kits 1937 Dallaire Sportater-109 Span Plan Ext$2600 Companion Stripwood Kit Dallaire--$3500 1940 Sailplane Comet-79 Wing Plan ExI $4150 Companion Stripmood Kit Sailplane--$26 30 [Plana Dallaire$5 00 Sailplane Wing$3 00] Midway Model Co --Full Partial Kits Rib Tip Former Kits--Machine Cut Parts 1930 Flying Quaker 04 Cabin Plan IncI $2150 1937 Quaker Flash 67 Cabin Plan Inol $1750 1937 Long Cabin 79 Plan ExtraS5l0 $1500 Repaca Old Timers- 020 Gas Electric 1940 Buzzard Bombshell 30 Span PP $1195 1940 Scientific Mercury 36 PP tChR/C $1395 1941 Request 30 Span PP $1295 Old Time R/C Sport--Full Kits--2-3 Ch R/C 1938 Powerhouse 50 engines $3596 1939 Air Trails Sportster 50 10 15 eng $3596 BOOKS ON OLD TIMER MODELS NEW--1934 Zaic Year Book $550 Antique Old Timer Model Air Craft $1090 Air Age Gas Models MAN Reqmnta $395 FREE FLIGHT KITS Sport Scale Sparkey Comet 30 Span Old Time Rubber $449 Maverick RIN 30 Span Coupe Rubber $1340 Lacy M10 Peck Peanut Scale $440 Satellite 450 4Ka 56 Span 1530 eng $2595 ILECTRIC SYSTEMS AND KITS Astro 95 System Wired $5995 SPECIAL $47 96] Astro 19 System Wired $1l995SPEClAL5 $9S961 Astro Sport Kit 05 23 Ch R/C $2120 Quiet Revolution Book S59SESPECIAL5$5001 ihipping Handling 59 Pegs CATALOGUE Jp ro $890 add $150 $100 PP copy sill $091 $2000 add $225 sent free upon $2001 $6500 add $300 request orderl $9501 $7000 add $150 Hobby Horn nd over $7000 add 5009 PO Box 3009 Addressees add 6% Seal Beach Ca 90780 tales Tax Send MO CK 7141 094-0223Best VisaIMC 0EXP mornings recorder--i COD-Exact Chg-i$l50 Hdl activates 5 rlngal May1981 111 00 00 NEW 00 6gOLT pROP yUI Quadra McCulloch Super Hustler ANNOUNCING THE INTRODUCTION OF THE ALL NEW NELSON COMPETITION NGINE STANDARD AND R/C AVAILABLE JUNE 1 1981 complete formation send large stamped self-addressed envelope Kustom Kraftsmanship PO Box 2699 Laguna Hills CA 92653 Dealer inquiries invited fiGTfldO PROPELLERS Made polyester boil color Go GRISH propeller True helical pitch airfoil win-power 2 Blade Tractor 5-3each 6-45 354ScSizes pitches 63 64USc 7476 78Kgstyles 848-6 8SUe 949-69-7 98104106Kgneeds 114116118 *1 12412-512-6*180 2 Blade PusheAT YOUR DEALER 5446-36-4SOc 8-6Sc 9-610-6*1 3 Blade Tractor 5-36-364 USc 3 Blade Pushe 6-3 Metallic Aluminum Color Tractor 1678i 8688*13 96 106104*160 Pusher106*180 locations panel lines stringers Dimensions utmost importance will used checking scale rule must furnished contestant taking dimensions drawing AMA contests rule should graduated inches modeler makes team will need new rule metric graduations use World Championships Photographic evidence authenticity should arranged booklet orderly manner beginning photos complete plane including subdivisions fuselage wing tail surfaces landing gear engine cowl cockpit cabin finish color markings color paint chips best Color photos can used too often misleading AMA rule book does limit quantity photos FAI specifies three maximum above items Most important dont GRISH LARGE WOOD PROPELLERS HARDWOOD too hard minimizes chance costly plane engine damage True pitch airfoil fully finished balanced ready coating 3/8 BOREALL SIZES IN18 57 6 8 & 10 PITCH 20 8 22 10 24 13 NEW SIZE IN 8 & 10 PITCH 26 $16 RIGHT HAND TRACTOR RUSH BROS 6ST JOHN INDIANA 46373 use photos showing details omitted model Keep mind judges will show preference photo rather drawing outlines plane photos drawing dont agree mark drawing corrections Sport Scale 10-minute time limit flight Precision no limit Precision has five extra mandatory maneuvers proto taxi traffic pattern approach landing landing per fection spot landing proto taxi hanger addition two extra options Except spot landing very demanding pilot agreed designing building flying Scale model aircraft easy Accumulation documentation adds burden spite Scale brings great personal satisfaction excitement winning place team ranks highlight modeling experience regular communications AMA HQ about com ing trip foreign land actual travel seeing firsthand models other nations meeting modelers competition lasting memories Expense contestant need great funds cover transportation entry fees meals lodging meet well some additional cash team fund derived sale patches donations case Dolly pays own way wives some other contestants think trip adventure chance see some world has very rewarding experience know deserving model ers could become team members minimum additional effort Documentation source letter Richard Burkett informs us drawing source Cartographic Division National Archives has microfilm complete construction blue prints airplane US government has ever owned anyone wants use service should call write first drawings still classified PBY Catalina example have approximately 20 films over 100 frames film cost per print 10t 11-in x 17-in size 25t 18-in x 24-in National Archives Cartographic Division 7th Constitution NW Washington DC 20408 Bob Dolly Wiseher Rt 1 S-22lLapham Peak Road Delafield WI 53018 RC Helicopters/Chesney Continued page 38 setup preflight checking problem solving fact What check after mishap included 60-sized collectivepitch machine Horizon amazingly simple Several clever construction setup proce dures employed including pitch gauge made say wish thought Total time spent construction setup about 20 hours Although Horizon frame tube machine inclusion side cowling pleasing front body sub-fin main fin make machine stand out very stylish bit futuristic-looking Horizon flybarless machine main rotor diameter 53 operating approximately 1575 rpm main blades require approximately one-and-a-half ounces weight tip compensate lack flybar weights go slot milled back side hardwood leading edge balsa trailing edge place weights entirely enclosed Properly installed method insures no chance weights coming out tail rotor blades made wood rather plastic probably provide lower inertia force ball bearings used Horizon double shielded Thrust bearings well double ball bearings used blade holders engine mounts horizontally facing rearwards connected clutch through drive belt three-blade fan used pull air through side cowling engine cooling method cooling has proven very effective fuel tank mounted cowling opposite engine located center gravity well center carburetor tail rotor driven speedometer-type cable such way require gears eliminates considerable friction well parts system necessary disengage tail rotor system autorotations 112 Model Aviation 3