When put turbine Ag-Cat lengthened nosethereby making nicely proportioned Rubber Scale model Seems unlikely thats what mind works Unique looks craft make good candidate Scale modeling TIS UNFORTUNATE fact life friends Free Flight Scale modelers use rubber power have problem Weve got lots problems biggie Its what called center gravity because must stretch horsepower nose crate way back almost under stabilizer suffer shorter motor runs Manufacturers full-scale aircraft wouldnt think doing such silly thing noncha lantly hang big hunk cast iron called engine up front makes dam short nose does keep CG place also does something very useful such driving propel ler engine spread out length fuselage usually have stick glob non-productive clay lump lead nose get CG up front belongs avoid giving useless nose weight free airplane ride keep searching rare long-nosed airplanes its have found friend makers powerful thank goodness light turbine engines cause now airframe manufacturers must design long noses CENTER SECTION WING & AILERON CROSS-SECTIONS SCALE SRAWN 3/4-L-G0123 UPPERWINGINTERPLANE I I STRUTSCENTER SECTION AILERON HORN FLYINOWIRESAILERON ____231ATOiSTRUT REAR CARANE RON HINGE FRONT CABANEFRONT INTER-REAR&MAIN PLANE STRUT T MODIFICATION RAISED UPPER WING 8 INCHES REDUCED STAGGER TO 32 INCREASING PILOTS FORWARD VISIRILTT APPROX 40/. WING AREA INCREASED 9s911 TO 3927 N5lt CG LIMITS AT DESIGN GROSS WEIGHT 6300 Us INCREASES S FORWARD & 11 AFT MODIFICATION CERTIFIES FOR G-164D TURBINE AG-CAT & RETROFITARLE TO G-164C MODELS P&W R-1340 600hp WITH FIEID APPROVAL O 1 2 3 4 9 N 7 B 9 10 II 111 111 MODIFICATION TO IMPROVE PILOTS VISIBILITY PPER W NO PAN K62 7 0 P6 R ONLY DIMENSIONS AFFECTED BY MODIFICATION SHOWN RS UNCHANGED SOURCES OF OATA I- SCHWEIZER GENERAL ARRANGEMENT SWO A5176 4-7-91 2- SCHWEIZER G-164C & S WING RAISE GEOMETRY SWO ASlES 2-S-Ri 3 GUI ESTREAM AMERICAN MEMO 2-17-91 COURTEST WILLIAM SCHWEIZER PRESIDENT SCHWEI2ER AIRCRAFT CORP. ELMIRA NY 72 Model Aviation an5 in 0 Z4 9-454 X anm -ano 0 nan8 -Danr 04 Zakman 54 -r0 x rn F- an 4 -4 N4fl1 O 45454 anOan 4854 ~ OF- an-s an54 -o ,Oan8 ma4O00 94414 0r- an4 anananSi 44 Oak anO 4 9an 1wC C 4 Z3 4 O 4484 anz0O Z an I5 n SCanZ 0 0 540an 4 F- ana- 4an 0 an48 SZ 8 n n -4 anan 5 0 oO ZaA 8 an, anfllSi Zan N anA 0* iSZ zano 4-44 qlO anS 8zo P a- -a 0 -1Z F-OF-40 an0 2 -44-v 1F0 4Ozak4 an40 an F-O OF-I aI an5 Ianz 4an -4I ~-40 00 C aRA o 14 -no -v -van an O 0* o-40 5 man o 4 o 4an anF- 4C Zan 9i F- E 4n r0z O8t 2 OVc40z an anSi rH -4 4 a--~ F man9 Tan oaF-880 0ana--440 anananan 054 anani 0anr -44 Oo P Si ZCC an 0 pW an -n 0 I4 -8 0an 0 anfla 4 0 4 4 4 FFLAT BLACK WITH GRAY STRIPES ON FRONT FACE ONLY LRL 7 NOTE WINGS HAVE NO SWEEPRACKAPPEARANCE DUE TO LARGE DIHEDRAL AND INCIDENGE CONSTRUCTION EXTRUDED ALUMINUM ALLOY REAMS METAL RIBS METAL COVERING EXCEPT ASNOTEDI lUDIA FILLER 0008- GRAY TIGHT SEAL DOOR FOR LIOUIOS FUEL CAPACITY RD GALS C CENTER SECTION 2 WING TANKS PRATT & WHITNEY PTBA-34AG TO POWER 750 SHP 2200RPMC MASCRUISE 700 SHP 2200RPM GRAY DOUBLE HINGED DOOR FOR SOLIDS WORKING 90-140MPH PITOT TUBE ON LEFT STRUT F7I Y II EXT FUEL TANK BRACEITYRI CEN ER SEC ON CABAN E/N/~9~-ARF0 BRACE W_RES IVIEW 0__________________________________ (FROM Si AR IS :.ANSOSHVEN EA CAL PRODUCT ION NUMBERS BLUE STRIPES~7K~J I1 77 2X SCALE BLUE STRIPES 2 WIDE II4tI V HORZONA & ER CA TAIL S FE GRE /JII FARR0 EREDAIII Tb 3RUDDER WINGWALKOFFSET41111 TRAVEL \LEFT SIDE ONIDE ONLYFROMFIN4 r1 TOP OF HOPPER COVERED BY METAL PANEL TO HERE REST UNCOVERED \VENT PIPE OUTLETS YELLOW I~CAP ERDLASS HOPPER QAC ITT LIQUID500 GALS SOLIDSRBR CU FT COLOR LIGHT BROWN ALL METAL AILERON/ / PROTOTYPE/ z3zzz688O RLUE NUMBERS 2X SCALE IF-N 25 HRL -A THRUST LINE -U ....- x:::: :ana-.GRAY WINDOWS OPEN ENGINEDOWN ROTH SIDES AIR CLEANERAIR SCOOP LEFT SIDE ONLY STATIC GROUND LINE TRANSLAND 125n 45 TAIL WHEEL 2900 nll0O-lOGRAY 18WHEELS TIRES YU87 HORIZONTAL TAIL 45 5 PROVISIONAL FUSELAGE CROSS SECTIONS DEVELOPED FROM 3-VIEWS & PHOTOS IN GRUMMAN BROCHURE COLOR LEGEND n LIGHT BROWN OH S UE 1 U BLACK 0 1 2 3 4 5 8 7 B 9 10 GRAY INDICATED OTHERWISE YELLOW NOR ZON ARE ERENCE AC AF ORWARD FORWARD AFT GRUMMAN T U R B 0 roz6k1 G-164D WINDOW REAR HINGE STEP-LEG IS SOUARE STEP ROUND CROSS SECTION OF STIFF ENER IN REMOVABLE PANELS NO SCALE ENGINE COWL IN OPEN POSIT ION MODEL AVIATION DRAWN & INKED BY SCALE ORIGINAL PUBLISHED WARREN D SHIPP SAN DIEGO CALIFORNIA 150 1100 APRIL 1981 January 1982 73 Steps wing-walk 2-in-dia pipe bottom loading shown Note small TE fairing top surface wing fuse junction planes balance things out Thanks Pratt & Whitney Grumman now have nice long-nosed catAg-Cat isthe Grumman Turbo Ag-Cat Model G 164D 2455 Grumman Ag-Cats now field Pratt & Whitney radial engines 450 600 horsepower darn short noses Grumman decided hang P&W turbine engine Cat found extend nose forward whopping 4 ft 6 keep center gravity always Unknowingly gave us Rubber Scale types long-nose biplane generous dihedral lots scale downthrust worst maybe well have add bit area tail surfaces now can stretch rubber engine way back behind end canopy still wind up pun intended CG respectable place Twenty-two Model D Ag-Cats have built May 1 1981 65 gap between wings shown main drawing February 198 1 Gulfstream American completed modi fication raises upper wings eight provide pilot 40% increase vertical forward visibility change also increased allowable center gravity travel modifica tion retrofitable onthe G-164C Ag-CatP&W R- 1340 600-hp engine Schweizer Aircraft Corporation Elmira NY purchased type certificates manufac turing rights Ag-Cat line Gulfstream American early 1981 presently process making FAA certified kits Continued page 133 74 Model Aviation Heres challenge scale detail pump impeller mounted between gear Note flexible hose section brace wires odd-shaped canopy really shows off cockpit detail Heres close look note spraying mixture controls left Two types hopper doors solids left liquids right also high-volume liquid loading system bottom Fuselage side panels easily removed maintenance inspection cleaning hard-working airplane Engine hoods opened propeller feathered air scoop fuselage panels removed inspection long nose clearly evident So far plane has couple hours mostly 5- 10-mm flights note worthy finding point 20 30 minutes charging ground onboard solar cells can also plug 40-cell panel mentioned earlier give additional 200 mA provided enough power three four minutes ofmotor run Thats usually plenty get lumbering plane up about 500 feet Conclusions use solar cells RC models especially Sailplanes may become com monplace future easy work easy installless difficult instal ling servos control linkages Some might object appearance people find enhance visual interest model biggest drawback presently cost limited availability ones use NASA surplus cells obtained through local non-profit solar energy association Retail outlets such Radio Shack sometimes have retail cost 16 cells would about equivalent two servos cost solar cells projected drop dramatically coming years happens cost will factor decision made whether include solar cells model may find ourselves using ground-based panels could folded compact easily transported packages take place bother some motorcycle batteries gel cells flying field Certalnly will see solar cell applica tions hobby years come Ag-Cat/Shipp Continued page 74 airplanes field can modified past 24 years Schweizer leading manufacturer sailplanes has building Ag-Cats under contract Grumman Gulfstream American Certification Ag-Cat made June 1957 andthelineincludestheModel450Bwith 450-hp P&W R-985 Model 600B 600hp P&W R-1340 Model G-164C also R- 1340 new G- 1 64D Turbine Ag-Cat well-suited rubber power Turbo Ag-Cat can powered other forms model engines wing modification opens up possibilities Gas-powered Model Cs radial engines could made 73-in gap types could possibly benefit increased gap increased CG travel Put Cat life Grummans Flock Ferocious Fighting Felines Wildcat F4F-3 Hellcat F6F-3 Tiger Fl iF-i Bearcat F8F-2 Tigercat F7F-IN Tomcat F-I 4A Panther F9F-4 Cougar F9F-6 Ag-Cat great fighters coincidentally Navy designation Grumman F felines Theyre military civvie AgCat looks like older air fighter its great fighter its assigned task Some 2455 out fields dusting spraying fighting bugs destroy farmers crops can carry water chemical mixtures fight forest fires Grummans cats Ag-Cat can also pussy catin its huge hopper can often does carry loads seeds planting crops thereby helpingto per petuate life well perform other conserva tion duties WHAT RIC BOOK has complete data about 2100 different RIC products froni over 250 different RIC companies Pills beginners tips R/C experts ITS THIS YEARS EDITION OF THE AVAILABLE THROUGH YOUR LOCAL HOBBY SHOP OR SEND $950 $795 llos $155 postage haialliiig RIC BUYERS GUIDE Clifton House Clifton VA 22024 January 1982 133
Edition: Model Aviation - 1982/01
Page Numbers: 72, 73, 74, 133
When put turbine Ag-Cat lengthened nosethereby making nicely proportioned Rubber Scale model Seems unlikely thats what mind works Unique looks craft make good candidate Scale modeling TIS UNFORTUNATE fact life friends Free Flight Scale modelers use rubber power have problem Weve got lots problems biggie Its what called center gravity because must stretch horsepower nose crate way back almost under stabilizer suffer shorter motor runs Manufacturers full-scale aircraft wouldnt think doing such silly thing noncha lantly hang big hunk cast iron called engine up front makes dam short nose does keep CG place also does something very useful such driving propel ler engine spread out length fuselage usually have stick glob non-productive clay lump lead nose get CG up front belongs avoid giving useless nose weight free airplane ride keep searching rare long-nosed airplanes its have found friend makers powerful thank goodness light turbine engines cause now airframe manufacturers must design long noses CENTER SECTION WING & AILERON CROSS-SECTIONS SCALE SRAWN 3/4-L-G0123 UPPERWINGINTERPLANE I I STRUTSCENTER SECTION AILERON HORN FLYINOWIRESAILERON ____231ATOiSTRUT REAR CARANE RON HINGE FRONT CABANEFRONT INTER-REAR&MAIN PLANE STRUT T MODIFICATION RAISED UPPER WING 8 INCHES REDUCED STAGGER TO 32 INCREASING PILOTS FORWARD VISIRILTT APPROX 40/. WING AREA INCREASED 9s911 TO 3927 N5lt CG LIMITS AT DESIGN GROSS WEIGHT 6300 Us INCREASES S FORWARD & 11 AFT MODIFICATION CERTIFIES FOR G-164D TURBINE AG-CAT & RETROFITARLE TO G-164C MODELS P&W R-1340 600hp WITH FIEID APPROVAL O 1 2 3 4 9 N 7 B 9 10 II 111 111 MODIFICATION TO IMPROVE PILOTS VISIBILITY PPER W NO PAN K62 7 0 P6 R ONLY DIMENSIONS AFFECTED BY MODIFICATION SHOWN RS UNCHANGED SOURCES OF OATA I- SCHWEIZER GENERAL ARRANGEMENT SWO A5176 4-7-91 2- SCHWEIZER G-164C & S WING RAISE GEOMETRY SWO ASlES 2-S-Ri 3 GUI ESTREAM AMERICAN MEMO 2-17-91 COURTEST WILLIAM SCHWEIZER PRESIDENT SCHWEI2ER AIRCRAFT CORP. ELMIRA NY 72 Model Aviation an5 in 0 Z4 9-454 X anm -ano 0 nan8 -Danr 04 Zakman 54 -r0 x rn F- an 4 -4 N4fl1 O 45454 anOan 4854 ~ OF- an-s an54 -o ,Oan8 ma4O00 94414 0r- an4 anananSi 44 Oak anO 4 9an 1wC C 4 Z3 4 O 4484 anz0O Z an I5 n SCanZ 0 0 540an 4 F- ana- 4an 0 an48 SZ 8 n n -4 anan 5 0 oO ZaA 8 an, anfllSi Zan N anA 0* iSZ zano 4-44 qlO anS 8zo P a- -a 0 -1Z F-OF-40 an0 2 -44-v 1F0 4Ozak4 an40 an F-O OF-I aI an5 Ianz 4an -4I ~-40 00 C aRA o 14 -no -v -van an O 0* o-40 5 man o 4 o 4an anF- 4C Zan 9i F- E 4n r0z O8t 2 OVc40z an anSi rH -4 4 a--~ F man9 Tan oaF-880 0ana--440 anananan 054 anani 0anr -44 Oo P Si ZCC an 0 pW an -n 0 I4 -8 0an 0 anfla 4 0 4 4 4 FFLAT BLACK WITH GRAY STRIPES ON FRONT FACE ONLY LRL 7 NOTE WINGS HAVE NO SWEEPRACKAPPEARANCE DUE TO LARGE DIHEDRAL AND INCIDENGE CONSTRUCTION EXTRUDED ALUMINUM ALLOY REAMS METAL RIBS METAL COVERING EXCEPT ASNOTEDI lUDIA FILLER 0008- GRAY TIGHT SEAL DOOR FOR LIOUIOS FUEL CAPACITY RD GALS C CENTER SECTION 2 WING TANKS PRATT & WHITNEY PTBA-34AG TO POWER 750 SHP 2200RPMC MASCRUISE 700 SHP 2200RPM GRAY DOUBLE HINGED DOOR FOR SOLIDS WORKING 90-140MPH PITOT TUBE ON LEFT STRUT F7I Y II EXT FUEL TANK BRACEITYRI CEN ER SEC ON CABAN E/N/~9~-ARF0 BRACE W_RES IVIEW 0__________________________________ (FROM Si AR IS :.ANSOSHVEN EA CAL PRODUCT ION NUMBERS BLUE STRIPES~7K~J I1 77 2X SCALE BLUE STRIPES 2 WIDE II4tI V HORZONA & ER CA TAIL S FE GRE /JII FARR0 EREDAIII Tb 3RUDDER WINGWALKOFFSET41111 TRAVEL \LEFT SIDE ONIDE ONLYFROMFIN4 r1 TOP OF HOPPER COVERED BY METAL PANEL TO HERE REST UNCOVERED \VENT PIPE OUTLETS YELLOW I~CAP ERDLASS HOPPER QAC ITT LIQUID500 GALS SOLIDSRBR CU FT COLOR LIGHT BROWN ALL METAL AILERON/ / PROTOTYPE/ z3zzz688O RLUE NUMBERS 2X SCALE IF-N 25 HRL -A THRUST LINE -U ....- x:::: :ana-.GRAY WINDOWS OPEN ENGINEDOWN ROTH SIDES AIR CLEANERAIR SCOOP LEFT SIDE ONLY STATIC GROUND LINE TRANSLAND 125n 45 TAIL WHEEL 2900 nll0O-lOGRAY 18WHEELS TIRES YU87 HORIZONTAL TAIL 45 5 PROVISIONAL FUSELAGE CROSS SECTIONS DEVELOPED FROM 3-VIEWS & PHOTOS IN GRUMMAN BROCHURE COLOR LEGEND n LIGHT BROWN OH S UE 1 U BLACK 0 1 2 3 4 5 8 7 B 9 10 GRAY INDICATED OTHERWISE YELLOW NOR ZON ARE ERENCE AC AF ORWARD FORWARD AFT GRUMMAN T U R B 0 roz6k1 G-164D WINDOW REAR HINGE STEP-LEG IS SOUARE STEP ROUND CROSS SECTION OF STIFF ENER IN REMOVABLE PANELS NO SCALE ENGINE COWL IN OPEN POSIT ION MODEL AVIATION DRAWN & INKED BY SCALE ORIGINAL PUBLISHED WARREN D SHIPP SAN DIEGO CALIFORNIA 150 1100 APRIL 1981 January 1982 73 Steps wing-walk 2-in-dia pipe bottom loading shown Note small TE fairing top surface wing fuse junction planes balance things out Thanks Pratt & Whitney Grumman now have nice long-nosed catAg-Cat isthe Grumman Turbo Ag-Cat Model G 164D 2455 Grumman Ag-Cats now field Pratt & Whitney radial engines 450 600 horsepower darn short noses Grumman decided hang P&W turbine engine Cat found extend nose forward whopping 4 ft 6 keep center gravity always Unknowingly gave us Rubber Scale types long-nose biplane generous dihedral lots scale downthrust worst maybe well have add bit area tail surfaces now can stretch rubber engine way back behind end canopy still wind up pun intended CG respectable place Twenty-two Model D Ag-Cats have built May 1 1981 65 gap between wings shown main drawing February 198 1 Gulfstream American completed modi fication raises upper wings eight provide pilot 40% increase vertical forward visibility change also increased allowable center gravity travel modifica tion retrofitable onthe G-164C Ag-CatP&W R- 1340 600-hp engine Schweizer Aircraft Corporation Elmira NY purchased type certificates manufac turing rights Ag-Cat line Gulfstream American early 1981 presently process making FAA certified kits Continued page 133 74 Model Aviation Heres challenge scale detail pump impeller mounted between gear Note flexible hose section brace wires odd-shaped canopy really shows off cockpit detail Heres close look note spraying mixture controls left Two types hopper doors solids left liquids right also high-volume liquid loading system bottom Fuselage side panels easily removed maintenance inspection cleaning hard-working airplane Engine hoods opened propeller feathered air scoop fuselage panels removed inspection long nose clearly evident So far plane has couple hours mostly 5- 10-mm flights note worthy finding point 20 30 minutes charging ground onboard solar cells can also plug 40-cell panel mentioned earlier give additional 200 mA provided enough power three four minutes ofmotor run Thats usually plenty get lumbering plane up about 500 feet Conclusions use solar cells RC models especially Sailplanes may become com monplace future easy work easy installless difficult instal ling servos control linkages Some might object appearance people find enhance visual interest model biggest drawback presently cost limited availability ones use NASA surplus cells obtained through local non-profit solar energy association Retail outlets such Radio Shack sometimes have retail cost 16 cells would about equivalent two servos cost solar cells projected drop dramatically coming years happens cost will factor decision made whether include solar cells model may find ourselves using ground-based panels could folded compact easily transported packages take place bother some motorcycle batteries gel cells flying field Certalnly will see solar cell applica tions hobby years come Ag-Cat/Shipp Continued page 74 airplanes field can modified past 24 years Schweizer leading manufacturer sailplanes has building Ag-Cats under contract Grumman Gulfstream American Certification Ag-Cat made June 1957 andthelineincludestheModel450Bwith 450-hp P&W R-985 Model 600B 600hp P&W R-1340 Model G-164C also R- 1340 new G- 1 64D Turbine Ag-Cat well-suited rubber power Turbo Ag-Cat can powered other forms model engines wing modification opens up possibilities Gas-powered Model Cs radial engines could made 73-in gap types could possibly benefit increased gap increased CG travel Put Cat life Grummans Flock Ferocious Fighting Felines Wildcat F4F-3 Hellcat F6F-3 Tiger Fl iF-i Bearcat F8F-2 Tigercat F7F-IN Tomcat F-I 4A Panther F9F-4 Cougar F9F-6 Ag-Cat great fighters coincidentally Navy designation Grumman F felines Theyre military civvie AgCat looks like older air fighter its great fighter its assigned task Some 2455 out fields dusting spraying fighting bugs destroy farmers crops can carry water chemical mixtures fight forest fires Grummans cats Ag-Cat can also pussy catin its huge hopper can often does carry loads seeds planting crops thereby helpingto per petuate life well perform other conserva tion duties WHAT RIC BOOK has complete data about 2100 different RIC products froni over 250 different RIC companies Pills beginners tips R/C experts ITS THIS YEARS EDITION OF THE AVAILABLE THROUGH YOUR LOCAL HOBBY SHOP OR SEND $950 $795 llos $155 postage haialliiig RIC BUYERS GUIDE Clifton House Clifton VA 22024 January 1982 133
Edition: Model Aviation - 1982/01
Page Numbers: 72, 73, 74, 133
When put turbine Ag-Cat lengthened nosethereby making nicely proportioned Rubber Scale model Seems unlikely thats what mind works Unique looks craft make good candidate Scale modeling TIS UNFORTUNATE fact life friends Free Flight Scale modelers use rubber power have problem Weve got lots problems biggie Its what called center gravity because must stretch horsepower nose crate way back almost under stabilizer suffer shorter motor runs Manufacturers full-scale aircraft wouldnt think doing such silly thing noncha lantly hang big hunk cast iron called engine up front makes dam short nose does keep CG place also does something very useful such driving propel ler engine spread out length fuselage usually have stick glob non-productive clay lump lead nose get CG up front belongs avoid giving useless nose weight free airplane ride keep searching rare long-nosed airplanes its have found friend makers powerful thank goodness light turbine engines cause now airframe manufacturers must design long noses CENTER SECTION WING & AILERON CROSS-SECTIONS SCALE SRAWN 3/4-L-G0123 UPPERWINGINTERPLANE I I STRUTSCENTER SECTION AILERON HORN FLYINOWIRESAILERON ____231ATOiSTRUT REAR CARANE RON HINGE FRONT CABANEFRONT INTER-REAR&MAIN PLANE STRUT T MODIFICATION RAISED UPPER WING 8 INCHES REDUCED STAGGER TO 32 INCREASING PILOTS FORWARD VISIRILTT APPROX 40/. WING AREA INCREASED 9s911 TO 3927 N5lt CG LIMITS AT DESIGN GROSS WEIGHT 6300 Us INCREASES S FORWARD & 11 AFT MODIFICATION CERTIFIES FOR G-164D TURBINE AG-CAT & RETROFITARLE TO G-164C MODELS P&W R-1340 600hp WITH FIEID APPROVAL O 1 2 3 4 9 N 7 B 9 10 II 111 111 MODIFICATION TO IMPROVE PILOTS VISIBILITY PPER W NO PAN K62 7 0 P6 R ONLY DIMENSIONS AFFECTED BY MODIFICATION SHOWN RS UNCHANGED SOURCES OF OATA I- SCHWEIZER GENERAL ARRANGEMENT SWO A5176 4-7-91 2- SCHWEIZER G-164C & S WING RAISE GEOMETRY SWO ASlES 2-S-Ri 3 GUI ESTREAM AMERICAN MEMO 2-17-91 COURTEST WILLIAM SCHWEIZER PRESIDENT SCHWEI2ER AIRCRAFT CORP. ELMIRA NY 72 Model Aviation an5 in 0 Z4 9-454 X anm -ano 0 nan8 -Danr 04 Zakman 54 -r0 x rn F- an 4 -4 N4fl1 O 45454 anOan 4854 ~ OF- an-s an54 -o ,Oan8 ma4O00 94414 0r- an4 anananSi 44 Oak anO 4 9an 1wC C 4 Z3 4 O 4484 anz0O Z an I5 n SCanZ 0 0 540an 4 F- ana- 4an 0 an48 SZ 8 n n -4 anan 5 0 oO ZaA 8 an, anfllSi Zan N anA 0* iSZ zano 4-44 qlO anS 8zo P a- -a 0 -1Z F-OF-40 an0 2 -44-v 1F0 4Ozak4 an40 an F-O OF-I aI an5 Ianz 4an -4I ~-40 00 C aRA o 14 -no -v -van an O 0* o-40 5 man o 4 o 4an anF- 4C Zan 9i F- E 4n r0z O8t 2 OVc40z an anSi rH -4 4 a--~ F man9 Tan oaF-880 0ana--440 anananan 054 anani 0anr -44 Oo P Si ZCC an 0 pW an -n 0 I4 -8 0an 0 anfla 4 0 4 4 4 FFLAT BLACK WITH GRAY STRIPES ON FRONT FACE ONLY LRL 7 NOTE WINGS HAVE NO SWEEPRACKAPPEARANCE DUE TO LARGE DIHEDRAL AND INCIDENGE CONSTRUCTION EXTRUDED ALUMINUM ALLOY REAMS METAL RIBS METAL COVERING EXCEPT ASNOTEDI lUDIA FILLER 0008- GRAY TIGHT SEAL DOOR FOR LIOUIOS FUEL CAPACITY RD GALS C CENTER SECTION 2 WING TANKS PRATT & WHITNEY PTBA-34AG TO POWER 750 SHP 2200RPMC MASCRUISE 700 SHP 2200RPM GRAY DOUBLE HINGED DOOR FOR SOLIDS WORKING 90-140MPH PITOT TUBE ON LEFT STRUT F7I Y II EXT FUEL TANK BRACEITYRI CEN ER SEC ON CABAN E/N/~9~-ARF0 BRACE W_RES IVIEW 0__________________________________ (FROM Si AR IS :.ANSOSHVEN EA CAL PRODUCT ION NUMBERS BLUE STRIPES~7K~J I1 77 2X SCALE BLUE STRIPES 2 WIDE II4tI V HORZONA & ER CA TAIL S FE GRE /JII FARR0 EREDAIII Tb 3RUDDER WINGWALKOFFSET41111 TRAVEL \LEFT SIDE ONIDE ONLYFROMFIN4 r1 TOP OF HOPPER COVERED BY METAL PANEL TO HERE REST UNCOVERED \VENT PIPE OUTLETS YELLOW I~CAP ERDLASS HOPPER QAC ITT LIQUID500 GALS SOLIDSRBR CU FT COLOR LIGHT BROWN ALL METAL AILERON/ / PROTOTYPE/ z3zzz688O RLUE NUMBERS 2X SCALE IF-N 25 HRL -A THRUST LINE -U ....- x:::: :ana-.GRAY WINDOWS OPEN ENGINEDOWN ROTH SIDES AIR CLEANERAIR SCOOP LEFT SIDE ONLY STATIC GROUND LINE TRANSLAND 125n 45 TAIL WHEEL 2900 nll0O-lOGRAY 18WHEELS TIRES YU87 HORIZONTAL TAIL 45 5 PROVISIONAL FUSELAGE CROSS SECTIONS DEVELOPED FROM 3-VIEWS & PHOTOS IN GRUMMAN BROCHURE COLOR LEGEND n LIGHT BROWN OH S UE 1 U BLACK 0 1 2 3 4 5 8 7 B 9 10 GRAY INDICATED OTHERWISE YELLOW NOR ZON ARE ERENCE AC AF ORWARD FORWARD AFT GRUMMAN T U R B 0 roz6k1 G-164D WINDOW REAR HINGE STEP-LEG IS SOUARE STEP ROUND CROSS SECTION OF STIFF ENER IN REMOVABLE PANELS NO SCALE ENGINE COWL IN OPEN POSIT ION MODEL AVIATION DRAWN & INKED BY SCALE ORIGINAL PUBLISHED WARREN D SHIPP SAN DIEGO CALIFORNIA 150 1100 APRIL 1981 January 1982 73 Steps wing-walk 2-in-dia pipe bottom loading shown Note small TE fairing top surface wing fuse junction planes balance things out Thanks Pratt & Whitney Grumman now have nice long-nosed catAg-Cat isthe Grumman Turbo Ag-Cat Model G 164D 2455 Grumman Ag-Cats now field Pratt & Whitney radial engines 450 600 horsepower darn short noses Grumman decided hang P&W turbine engine Cat found extend nose forward whopping 4 ft 6 keep center gravity always Unknowingly gave us Rubber Scale types long-nose biplane generous dihedral lots scale downthrust worst maybe well have add bit area tail surfaces now can stretch rubber engine way back behind end canopy still wind up pun intended CG respectable place Twenty-two Model D Ag-Cats have built May 1 1981 65 gap between wings shown main drawing February 198 1 Gulfstream American completed modi fication raises upper wings eight provide pilot 40% increase vertical forward visibility change also increased allowable center gravity travel modifica tion retrofitable onthe G-164C Ag-CatP&W R- 1340 600-hp engine Schweizer Aircraft Corporation Elmira NY purchased type certificates manufac turing rights Ag-Cat line Gulfstream American early 1981 presently process making FAA certified kits Continued page 133 74 Model Aviation Heres challenge scale detail pump impeller mounted between gear Note flexible hose section brace wires odd-shaped canopy really shows off cockpit detail Heres close look note spraying mixture controls left Two types hopper doors solids left liquids right also high-volume liquid loading system bottom Fuselage side panels easily removed maintenance inspection cleaning hard-working airplane Engine hoods opened propeller feathered air scoop fuselage panels removed inspection long nose clearly evident So far plane has couple hours mostly 5- 10-mm flights note worthy finding point 20 30 minutes charging ground onboard solar cells can also plug 40-cell panel mentioned earlier give additional 200 mA provided enough power three four minutes ofmotor run Thats usually plenty get lumbering plane up about 500 feet Conclusions use solar cells RC models especially Sailplanes may become com monplace future easy work easy installless difficult instal ling servos control linkages Some might object appearance people find enhance visual interest model biggest drawback presently cost limited availability ones use NASA surplus cells obtained through local non-profit solar energy association Retail outlets such Radio Shack sometimes have retail cost 16 cells would about equivalent two servos cost solar cells projected drop dramatically coming years happens cost will factor decision made whether include solar cells model may find ourselves using ground-based panels could folded compact easily transported packages take place bother some motorcycle batteries gel cells flying field Certalnly will see solar cell applica tions hobby years come Ag-Cat/Shipp Continued page 74 airplanes field can modified past 24 years Schweizer leading manufacturer sailplanes has building Ag-Cats under contract Grumman Gulfstream American Certification Ag-Cat made June 1957 andthelineincludestheModel450Bwith 450-hp P&W R-985 Model 600B 600hp P&W R-1340 Model G-164C also R- 1340 new G- 1 64D Turbine Ag-Cat well-suited rubber power Turbo Ag-Cat can powered other forms model engines wing modification opens up possibilities Gas-powered Model Cs radial engines could made 73-in gap types could possibly benefit increased gap increased CG travel Put Cat life Grummans Flock Ferocious Fighting Felines Wildcat F4F-3 Hellcat F6F-3 Tiger Fl iF-i Bearcat F8F-2 Tigercat F7F-IN Tomcat F-I 4A Panther F9F-4 Cougar F9F-6 Ag-Cat great fighters coincidentally Navy designation Grumman F felines Theyre military civvie AgCat looks like older air fighter its great fighter its assigned task Some 2455 out fields dusting spraying fighting bugs destroy farmers crops can carry water chemical mixtures fight forest fires Grummans cats Ag-Cat can also pussy catin its huge hopper can often does carry loads seeds planting crops thereby helpingto per petuate life well perform other conserva tion duties WHAT RIC BOOK has complete data about 2100 different RIC products froni over 250 different RIC companies Pills beginners tips R/C experts ITS THIS YEARS EDITION OF THE AVAILABLE THROUGH YOUR LOCAL HOBBY SHOP OR SEND $950 $795 llos $155 postage haialliiig RIC BUYERS GUIDE Clifton House Clifton VA 22024 January 1982 133
Edition: Model Aviation - 1982/01
Page Numbers: 72, 73, 74, 133
When put turbine Ag-Cat lengthened nosethereby making nicely proportioned Rubber Scale model Seems unlikely thats what mind works Unique looks craft make good candidate Scale modeling TIS UNFORTUNATE fact life friends Free Flight Scale modelers use rubber power have problem Weve got lots problems biggie Its what called center gravity because must stretch horsepower nose crate way back almost under stabilizer suffer shorter motor runs Manufacturers full-scale aircraft wouldnt think doing such silly thing noncha lantly hang big hunk cast iron called engine up front makes dam short nose does keep CG place also does something very useful such driving propel ler engine spread out length fuselage usually have stick glob non-productive clay lump lead nose get CG up front belongs avoid giving useless nose weight free airplane ride keep searching rare long-nosed airplanes its have found friend makers powerful thank goodness light turbine engines cause now airframe manufacturers must design long noses CENTER SECTION WING & AILERON CROSS-SECTIONS SCALE SRAWN 3/4-L-G0123 UPPERWINGINTERPLANE I I STRUTSCENTER SECTION AILERON HORN FLYINOWIRESAILERON ____231ATOiSTRUT REAR CARANE RON HINGE FRONT CABANEFRONT INTER-REAR&MAIN PLANE STRUT T MODIFICATION RAISED UPPER WING 8 INCHES REDUCED STAGGER TO 32 INCREASING PILOTS FORWARD VISIRILTT APPROX 40/. WING AREA INCREASED 9s911 TO 3927 N5lt CG LIMITS AT DESIGN GROSS WEIGHT 6300 Us INCREASES S FORWARD & 11 AFT MODIFICATION CERTIFIES FOR G-164D TURBINE AG-CAT & RETROFITARLE TO G-164C MODELS P&W R-1340 600hp WITH FIEID APPROVAL O 1 2 3 4 9 N 7 B 9 10 II 111 111 MODIFICATION TO IMPROVE PILOTS VISIBILITY PPER W NO PAN K62 7 0 P6 R ONLY DIMENSIONS AFFECTED BY MODIFICATION SHOWN RS UNCHANGED SOURCES OF OATA I- SCHWEIZER GENERAL ARRANGEMENT SWO A5176 4-7-91 2- SCHWEIZER G-164C & S WING RAISE GEOMETRY SWO ASlES 2-S-Ri 3 GUI ESTREAM AMERICAN MEMO 2-17-91 COURTEST WILLIAM SCHWEIZER PRESIDENT SCHWEI2ER AIRCRAFT CORP. ELMIRA NY 72 Model Aviation an5 in 0 Z4 9-454 X anm -ano 0 nan8 -Danr 04 Zakman 54 -r0 x rn F- an 4 -4 N4fl1 O 45454 anOan 4854 ~ OF- an-s an54 -o ,Oan8 ma4O00 94414 0r- an4 anananSi 44 Oak anO 4 9an 1wC C 4 Z3 4 O 4484 anz0O Z an I5 n SCanZ 0 0 540an 4 F- ana- 4an 0 an48 SZ 8 n n -4 anan 5 0 oO ZaA 8 an, anfllSi Zan N anA 0* iSZ zano 4-44 qlO anS 8zo P a- -a 0 -1Z F-OF-40 an0 2 -44-v 1F0 4Ozak4 an40 an F-O OF-I aI an5 Ianz 4an -4I ~-40 00 C aRA o 14 -no -v -van an O 0* o-40 5 man o 4 o 4an anF- 4C Zan 9i F- E 4n r0z O8t 2 OVc40z an anSi rH -4 4 a--~ F man9 Tan oaF-880 0ana--440 anananan 054 anani 0anr -44 Oo P Si ZCC an 0 pW an -n 0 I4 -8 0an 0 anfla 4 0 4 4 4 FFLAT BLACK WITH GRAY STRIPES ON FRONT FACE ONLY LRL 7 NOTE WINGS HAVE NO SWEEPRACKAPPEARANCE DUE TO LARGE DIHEDRAL AND INCIDENGE CONSTRUCTION EXTRUDED ALUMINUM ALLOY REAMS METAL RIBS METAL COVERING EXCEPT ASNOTEDI lUDIA FILLER 0008- GRAY TIGHT SEAL DOOR FOR LIOUIOS FUEL CAPACITY RD GALS C CENTER SECTION 2 WING TANKS PRATT & WHITNEY PTBA-34AG TO POWER 750 SHP 2200RPMC MASCRUISE 700 SHP 2200RPM GRAY DOUBLE HINGED DOOR FOR SOLIDS WORKING 90-140MPH PITOT TUBE ON LEFT STRUT F7I Y II EXT FUEL TANK BRACEITYRI CEN ER SEC ON CABAN E/N/~9~-ARF0 BRACE W_RES IVIEW 0__________________________________ (FROM Si AR IS :.ANSOSHVEN EA CAL PRODUCT ION NUMBERS BLUE STRIPES~7K~J I1 77 2X SCALE BLUE STRIPES 2 WIDE II4tI V HORZONA & ER CA TAIL S FE GRE /JII FARR0 EREDAIII Tb 3RUDDER WINGWALKOFFSET41111 TRAVEL \LEFT SIDE ONIDE ONLYFROMFIN4 r1 TOP OF HOPPER COVERED BY METAL PANEL TO HERE REST UNCOVERED \VENT PIPE OUTLETS YELLOW I~CAP ERDLASS HOPPER QAC ITT LIQUID500 GALS SOLIDSRBR CU FT COLOR LIGHT BROWN ALL METAL AILERON/ / PROTOTYPE/ z3zzz688O RLUE NUMBERS 2X SCALE IF-N 25 HRL -A THRUST LINE -U ....- x:::: :ana-.GRAY WINDOWS OPEN ENGINEDOWN ROTH SIDES AIR CLEANERAIR SCOOP LEFT SIDE ONLY STATIC GROUND LINE TRANSLAND 125n 45 TAIL WHEEL 2900 nll0O-lOGRAY 18WHEELS TIRES YU87 HORIZONTAL TAIL 45 5 PROVISIONAL FUSELAGE CROSS SECTIONS DEVELOPED FROM 3-VIEWS & PHOTOS IN GRUMMAN BROCHURE COLOR LEGEND n LIGHT BROWN OH S UE 1 U BLACK 0 1 2 3 4 5 8 7 B 9 10 GRAY INDICATED OTHERWISE YELLOW NOR ZON ARE ERENCE AC AF ORWARD FORWARD AFT GRUMMAN T U R B 0 roz6k1 G-164D WINDOW REAR HINGE STEP-LEG IS SOUARE STEP ROUND CROSS SECTION OF STIFF ENER IN REMOVABLE PANELS NO SCALE ENGINE COWL IN OPEN POSIT ION MODEL AVIATION DRAWN & INKED BY SCALE ORIGINAL PUBLISHED WARREN D SHIPP SAN DIEGO CALIFORNIA 150 1100 APRIL 1981 January 1982 73 Steps wing-walk 2-in-dia pipe bottom loading shown Note small TE fairing top surface wing fuse junction planes balance things out Thanks Pratt & Whitney Grumman now have nice long-nosed catAg-Cat isthe Grumman Turbo Ag-Cat Model G 164D 2455 Grumman Ag-Cats now field Pratt & Whitney radial engines 450 600 horsepower darn short noses Grumman decided hang P&W turbine engine Cat found extend nose forward whopping 4 ft 6 keep center gravity always Unknowingly gave us Rubber Scale types long-nose biplane generous dihedral lots scale downthrust worst maybe well have add bit area tail surfaces now can stretch rubber engine way back behind end canopy still wind up pun intended CG respectable place Twenty-two Model D Ag-Cats have built May 1 1981 65 gap between wings shown main drawing February 198 1 Gulfstream American completed modi fication raises upper wings eight provide pilot 40% increase vertical forward visibility change also increased allowable center gravity travel modifica tion retrofitable onthe G-164C Ag-CatP&W R- 1340 600-hp engine Schweizer Aircraft Corporation Elmira NY purchased type certificates manufac turing rights Ag-Cat line Gulfstream American early 1981 presently process making FAA certified kits Continued page 133 74 Model Aviation Heres challenge scale detail pump impeller mounted between gear Note flexible hose section brace wires odd-shaped canopy really shows off cockpit detail Heres close look note spraying mixture controls left Two types hopper doors solids left liquids right also high-volume liquid loading system bottom Fuselage side panels easily removed maintenance inspection cleaning hard-working airplane Engine hoods opened propeller feathered air scoop fuselage panels removed inspection long nose clearly evident So far plane has couple hours mostly 5- 10-mm flights note worthy finding point 20 30 minutes charging ground onboard solar cells can also plug 40-cell panel mentioned earlier give additional 200 mA provided enough power three four minutes ofmotor run Thats usually plenty get lumbering plane up about 500 feet Conclusions use solar cells RC models especially Sailplanes may become com monplace future easy work easy installless difficult instal ling servos control linkages Some might object appearance people find enhance visual interest model biggest drawback presently cost limited availability ones use NASA surplus cells obtained through local non-profit solar energy association Retail outlets such Radio Shack sometimes have retail cost 16 cells would about equivalent two servos cost solar cells projected drop dramatically coming years happens cost will factor decision made whether include solar cells model may find ourselves using ground-based panels could folded compact easily transported packages take place bother some motorcycle batteries gel cells flying field Certalnly will see solar cell applica tions hobby years come Ag-Cat/Shipp Continued page 74 airplanes field can modified past 24 years Schweizer leading manufacturer sailplanes has building Ag-Cats under contract Grumman Gulfstream American Certification Ag-Cat made June 1957 andthelineincludestheModel450Bwith 450-hp P&W R-985 Model 600B 600hp P&W R-1340 Model G-164C also R- 1340 new G- 1 64D Turbine Ag-Cat well-suited rubber power Turbo Ag-Cat can powered other forms model engines wing modification opens up possibilities Gas-powered Model Cs radial engines could made 73-in gap types could possibly benefit increased gap increased CG travel Put Cat life Grummans Flock Ferocious Fighting Felines Wildcat F4F-3 Hellcat F6F-3 Tiger Fl iF-i Bearcat F8F-2 Tigercat F7F-IN Tomcat F-I 4A Panther F9F-4 Cougar F9F-6 Ag-Cat great fighters coincidentally Navy designation Grumman F felines Theyre military civvie AgCat looks like older air fighter its great fighter its assigned task Some 2455 out fields dusting spraying fighting bugs destroy farmers crops can carry water chemical mixtures fight forest fires Grummans cats Ag-Cat can also pussy catin its huge hopper can often does carry loads seeds planting crops thereby helpingto per petuate life well perform other conserva tion duties WHAT RIC BOOK has complete data about 2100 different RIC products froni over 250 different RIC companies Pills beginners tips R/C experts ITS THIS YEARS EDITION OF THE AVAILABLE THROUGH YOUR LOCAL HOBBY SHOP OR SEND $950 $795 llos $155 postage haialliiig RIC BUYERS GUIDE Clifton House Clifton VA 22024 January 1982 133