pETE ANDREWS remembered first flier post 30-minute Indoor flight dead Pete Andrews passed away after sixmonth illness Pete influenced people Indoor model design several decades winning Nats events other awards Finally almost retired modeling because seemed no challenges left Frank Cummings another modeling pioneer longtime friend convinced Pete tackle FAI Indoor 1972 Pete became Indoor World Champion after posting flights 3612 3457 134 ahead Czech flier Karol Rybecky favorite memory Pete processing session 72 World Championships Bystanders startled model 5% overweight 3% short span Pete just grinned said doesnt matter others will also remember Pete helped anyone needed always free advice workedno matter asked what question Petes legacy us allan example wisdom helpfulness Tel 314 892-3803 after 730 pm St Louis fliers have arranged series sessions Jefferson College 25 miles south St Louis New YorkBrooklyn Contact Don Ross 38 Churchill Rd Cressklll NJ 07626 Tel 201 568-5272 Activity planned Floyd Bennett Field tentative dates first weekends April May 1993 OklahomaOklahoma City Jim Belson 4933 NW 29th Oklahoma City OK 73129 Tel 405 946-1093 Fun-fly sessions National Guard Armory Jan 17 Feb 21 1993 annual contest March 21 1993 OklahomaTulsa George Calvert Rt 4 Box 188A Wagoner OK 74467 Tel 918 627-7200 Jan 11 1993 probable plus Feb March dates Tulsa National Guard Armory OregonAlbany Bob Stalick 5066 NW Picadilly Circle Albany OR 97321 Tel 503 928-8101 Four one-day meets two two-day meets November 1992 through February 1993 South Albany High School 41-ft hall 26-ft hail New Indoor postal contest column has previously discussed activities Denver Area Indoor Model Airplane Association DAIMAA University Colorado activity began access CU Balch Fieldhouse exchange managing Indoor model design courses aerospace engineering freshmen seven years over 1000 students have taken courses Beginning 1992 American Institute Aeronautics Astronautics AIAA has made three-year commitment Flying opportunities listings below represent additions changes information presented last month Please refer December 92 MA list site contact persons CDsplease fill dates beginning mid-March later As always please check contact person verify contest schedule before leaving home CanadaOntario area Dan OGrady 50 Largo Crescent Nepean Ontario Canada K2G3C7 Indoor flying MeArthur High School Ottawa Friday nights 7 pm 10pm Jan 8 Jan 15 Jan 22 Jan 29 Feb 5 Feb 12 Feb 19 Feb 26 Mar 5 Mar 12 1993 ConnecticutGlastonbury George Armstead 89 Harvest Lane Glastonbury CT 06037 Tel 203 633-7836 Sessions Jan 10 Feb 7 Mar 7 Apr 41993 Glastonbury High School gym beginning 8 am FloridaMiami Dr John Martin 2180 Tigertail Ave Miami FL 33133 Tel 305 858-6363 MIAMA contests Miami Dade South #4 Feb 1993 #5 Mar 7 1993 Florida State contests #3 Jan 2-3 1993 Delta hangar #4 Feb 13-14 1993 Coast Guard hangar Clearwater #5 Apr 3-4 1993 McDill AFB Always verify schedule calling hot line number above MissouriSt Louis Larry Coslick 4202 Valley Crest Hills St Louis MO 63128 102 Model Aviation E FLIGHT INDOOR Hacker uses Mini-Stick box help get flying sites continue program 1992 flying activity will restricted CU Aerospace Engineering graduates undergraduates program fine-tuned 1993 postal meet will include students universities Kansas Iowa Missouri wider coverage 1994 NFFS will participating also maybe other clubs can institute similar programs elsewhere New source tan rubber Golf balls made Titleist contain central core appears liquid-filled rubber ball Wound core length apparently tan rubber will relax about 0019 x 0060 Im writing after Jim Clem spent two hours unwinding rubber strip two such golf balls Ill relate much story information will have come after tests rubber strong caution Very few golf balls wound rubber others contain liquid under very high pressure cut type golf ball could seriously injured outer cover balls unwound cautiously scored using bandsaw addition ensuring have right safe type ball deep cut will spoil lot rubber start unwinding prepared rubber come off spurts may advisable have someone pull rubber away doesnt pile up floorit seems tangle instantly As rubber strip separates has twists must removed During process will tangle again again unless clever Some comments two golf balls appeared identical twice much rubber salvaged no obvious reason As rubber came off very crinkled ragged appearance Once chance relax dimensions changed rubber smoothed out good Only time will tell certain rubber has under tension stress will require time relax thinner strip will pose problems stripping also Most rotary strippers have guide hold rubber flat goes blades such thin rubber isnt stabilized current guides Testing prop/rubber combinations Sever al years ago Bob Champine suggested using turns-remaining method analyze prop performance apply test 1 Count rpm beginning soon possible after launch recording rpm time measured Continue during flight measurements least three minutes high-ceiling often low-ceiling flights 2 Beginning launch turns compute turns used rpm interval subtract turns left example assume rpm 70 end first minute launch turns 2500 second point turnsremaining curve 250070 2430 remaining points shown accompanying table January1993 103 Continued page 107 Test Prop/Rubber Combinations TimeTurns mmrpmremaining 002500 1702430 26442366 35982306 45622250 55342196 65162145 85052044 104981944 124921848 144851749 164831651 204821459 244811266 284811074 324805881 3648689 PROGRAM SELECTIONDISKETTESELECTION PRICES USA & CANADAPRICESe OVERSEAS SENOPROGRAMiEl EIAEIBDCEJ$65 SENOPROGRAM2C CIADRDCD$55 4 SEND BOTH PROGRAMSEl QAEJBDCfl$105 123 FF Indoor/Tenny Continued page 103 After taking similar curves different props should easier decide prop-rubber combinations changes prop design Laminated structures Indoor models have recently built have used curved laminated wing stab tips laminated rudders general have pleased results necessarily methods used build laminated parts made preshaping soaked balsa drying pieces gluing together thinned Duco cement built first Mini-Stick recently wing tips rudder entire stab outline laminated time tried entirely new approach strips softened water wrapped form still wet difference added second strip used highly dilute white glue between strips approach gives three advantages nondelicate operation No apparent weight disadvantage Excellent stiffness So far third advantage still impression plan build some test strips measure weight vs stiffness current benchmark Mini-Stick stab stab 65 x 16875-in ellipse weighing 0018 oz covered almost unbelievably stiff Laminationstep-by-step balsa used Mini-Stick outlines 003-wide strips cut four-pound C grain 00 16 sheet forms thin cardboard waterproofed thin glue sanded smooth used Slomons Quik Glue lamination glue thinned eight nine drops glue tablespoon water Before wrapping strips waxed forms prevent finished outlines sticking use wax parting agent nitrate gluethe glue may dry properly may degraded badly lamination process 1 Stretch plastic cling wrap tightly across work area create smooth surface 2 Apply parting agent wax whatever form pin work surface 3 Anchor end first strip form wet thoroughly water Continued page 108 New products take maintenance building new heights Custom Cradles Feature Custom molded gray fubing-no ugly tittings Special neoprene foam--impervious fuel oil Folds easy storage Custom design built last Ready use--no building Easily adjusted Lo Boy Standard Large X-Large Legz Tall Boy have everything Call free brochure Dealer Inquires welcome Tall Boy Standard Large X-Large NEW Radio Rack NEW Legz fold box side Lo Boy custom Cradles Lo Boy Standard--i 0 tall 22 long 3 5 wide fuselage $2190 Lo Boy Large--i 4 tall 28 long 5 8 wide fuselage $2590 Lo Boy X-Large--1 6 tall 28 long 8 12 wide fuselage $2890 Tall Boy Custom Cradles Tall Boy Standard--32 tall 22 tong Sto 5 wide fuselage $3490 Tall Boy Large.28 tall 28 long 5 8 wide fuselage $3890 Tall Boy X-Large--26 tall 28 long 8 12 wide fuselage$3890 AccessorIes folded Position Legz.1 8 tall t 8 wide hardware included fits boaes----$2990 Radio Rack--I folds compact protects radio home field 90 prIces Include shipping handling Send check money order today ahlp ups daily e9W4 er4edIm wdac4 3177 East Fort Lowell Road #1 Tucson Arizona 85716 Call today order 1 -800-CRADLE-O 272-3530 January1993 107 DESIGN YOUR OWN RC MODEL SAILPLANE AND ANALYZE ITS FLIGHT PERFORMANCE INTRODUCING TWO NEW EDUCATIONAL COMPUTER PROGRAMS PROGRAM 1 ODEL SAILPLANESOESIGN AND ANALYSIS RS STABILITY AND CONTROL PROGRAM 2 R.C MODEL SAILPLANESSTEADY STATE FLIGHT ANALYSIS C COVERS PERFORMANCE ESTIMATION AND THE DETAILED ANALYSIS OF SOURCES OF DRAG KEY FEATURES aTHE USER MANUALS CONTAIN STEPBYSTEP INSTRUCTION FOR INPUTTING DESIGN DATA BOTH PROGRAMS CONTAIN EXTENSIVE TUTORIAL BACKGROUND MATERIAL IN COLOR GRAPHIC FORMS EQUATIONS AND DATA USED IN THE PROGRAMS ARE CAREFULLY REFERENCED TO STANDARD TEXT BOOKS AND REFERENCE WORKS OF AERONAUTICAL ENGINEERING z MANY EXAMPLES INCLIEJEG COMPUTER REQUIREMENTS 1DM PERSONAL COMPUTER MODEL XT OR AT OR PS2 OR COMPATIBLE COMPUTER RUNNING MSDOS 33 OR LATER b EGA OR VGA COLOR DISPLAY c 316 KB OF COMPUTER MEMORY d HARD DISK DRIVE WITH 35 MB OF AVAILABLE MEMORY e AT LEAST ONE OF THE FOLLOWING DISKETTE DRIVES 35 INl44 MB z B 35 IN 726 KB z C 525 IN L2 MB PRINTER IS OPTIONAL PLEASE NOTE 360 KB DRIVES ARE NOT SUPPORTED TO ORDER CHECK THE APPROPRIATE BOXES ATTACH YOUR CHECK OR MONEY ORDER WITH YOUR MAILING ADDRESS TO STELLAR INSTRUMENT NORTHWEST INC 7 POWDERHORN DRIVE BEND 7701 9554 PRICES RICLUDE FRST CLASS POSTAGE 96 DAY LIMITED WARRANTY Hundreds cowls radial cowls & wheelpants r1150 Super Sportuier Super Fly 25 EZI 1000 HURT SHACK-PLOT uecasnion 25Son FW 1901800 FW 190 Z1900 J3 Cub scale1900 ME-i 00 E1000 PT-101400 PT-19 EZ1000 EON NW GeeBee Model V /4 scale5600 Wheelpants & Fairings4000 Stinson SR 72900 Strong lightweight one-piece construction Exact duplicate manufacturers original 47 Skytrain Set 2 2400 F8F Bearcat 2400 Pitto S2-A 40 2400 Wheelpants 01A long pair 1700 M-ub win tset 012 2000 ACE Seamaster Pod 40 45 .. 2200 Cessna 206 3750 Dalotel 2000 Ru9a Models 1800 Hobbico Extra 300 40 1700 Hobbico P-40 2100 Proctors Nieuport 20C-1 /4 scale 2500 RIO Special Ted Davey 1500 Spitfire 1/4 scale Mick Reeves .. 6000 Stinger Linear 2300 Send $100 catalog Dept MA Rt 1 Box 530 Goodview VA 24095 Wacs 0 w/blisters scale3600 Wbeipants & Fairings 11 long pair3100 ALL OTHER PLANS ---urommansiryrojeet h52200 Hawker Seafury/4 scale5200 RCM Stardoster II2300 Wheelpants 10 long pair2200 Ultimate Biplane Ohio RC3500 EUTOM Beech Staggerwing scale7500 Black Widow2300 Bucker Juogmans 1/4 scal3200 Bucker Jungmnn BU 131/4 scale 3000 Liberty Sport scale6000 Wheelpants 19 long pair4500 Phone orders information call 703 890-6017 9 am-6 pm EDT FF IndoorlTenny Continued page 107 brush waters surface tension will hold strip plastic put will actually ease problem wrapping strip form 4 As soon first strip wrapped anchor second repeat wrapping using dilute glue instead water 5 Let strips dry thoroughly dilute glue makes snug bond plastic use pointed segment sharp double-edged razor blade slide between form film release agent works properly will easy get outline off form prop blades also laminated second prop kept careful weight records Four blades just over two square inches area cut 0009 four-pound balsa total weight blades before lamination 00038 oz after lamination weighed 003 85 oz Based few flights prop still overly stiff new ones could much lighter wood can found Final comments use Slomons glue necessarily recommendation Tony Sutter gave bottle comment dries clearwhich almost true know works very well very dilute solution seemed resist settling out better other dilute white glues would like try glue call 800 553-8940 California 800 423-4135 rest US find nearest dealer months photos shows Vein Hackers Mini-Stick box has found interesting use addition storing models box Vein takes prospective Indoor site site owner wants know just what Vein means about flying model airplanes site Vein has immediate answer Another photo shows recent glider Bruce Kimbell built US Indoor Champs USIC model has several interesting features least removable wing Additional photos show wing place ready flight wing mounting alignment pegs matching tubes Bruce uses strips masking tape over wing pylon hold wing place during flight model weighed 22 grams Bruce feels about three grams too light ETSC Mini-Dome Just recordBruce calls model TWINGE Totally Wild Innovative New Glider Example also notes can twinge arm dont throw right * 1 5 SCHNEURLE THE NEWEST FOX 15 BRINGS NEW STANDARD OF AGAIN AVAILABLE CONSTRUCTION FEATURES Patented Crankcase r Sturdy Replaceable Prop Stud Special 10 mm Ball Bearings Interchangeable CL RC merely bolting another carburetor PERFORMANCE WITHIN REACH OF THE SPORT MODELER Easy Starting newest Fox 15 does have flipped like pro primed just right starts easily beginner expert cold Power Easily powerful side exhasst 15 yos can buy ely approaches power leading rear exhaust full racing motors Long Life Fox Fuel reasonably clean flying conditions can expect order ot 100 hours ot happy trouble-tree flying Reliability New Fox 15 has remarkable ability swallow air bubble fuel line accept over lean over rich setting fuel surge resulting violent maneuver still continue running Crash Resistant will really take hard concrete ruin new Fox 15 Prop stud replaceable modest cost So carb parts complete carb Service best laid plans mice modeltlyers seem occasionally come crashing down happens yos really appreciate owning Fox parts call 501 646-1656 parts will way within 24 hours Complete re-builds now running three days Also reassuring know repair will cost moto s wo th Maximum repair charge will never exceed 50% ot Retail Price ot new moto p us shipping FOX MANUFACTURING Fox Model Airplane Products 5305 Towson Smith AR 72901 6461656 501 6461757 108 Model Aviation ngine2000 000 Super Cub PA-lB scale3500 GREAT PIAIiES 0 1/5 ocale RIrscsOp1000 ong pair1100 ROYMUF fiiI IIT1WD rnt custom work too Fox 15 2 BaIl Bearings #21698 Fox 15 BB RO $8495 #11698 Fox 15 BB CL. $7495
Edition: Model Aviation - 1993/01
Page Numbers: 102, 103, 107, 108
pETE ANDREWS remembered first flier post 30-minute Indoor flight dead Pete Andrews passed away after sixmonth illness Pete influenced people Indoor model design several decades winning Nats events other awards Finally almost retired modeling because seemed no challenges left Frank Cummings another modeling pioneer longtime friend convinced Pete tackle FAI Indoor 1972 Pete became Indoor World Champion after posting flights 3612 3457 134 ahead Czech flier Karol Rybecky favorite memory Pete processing session 72 World Championships Bystanders startled model 5% overweight 3% short span Pete just grinned said doesnt matter others will also remember Pete helped anyone needed always free advice workedno matter asked what question Petes legacy us allan example wisdom helpfulness Tel 314 892-3803 after 730 pm St Louis fliers have arranged series sessions Jefferson College 25 miles south St Louis New YorkBrooklyn Contact Don Ross 38 Churchill Rd Cressklll NJ 07626 Tel 201 568-5272 Activity planned Floyd Bennett Field tentative dates first weekends April May 1993 OklahomaOklahoma City Jim Belson 4933 NW 29th Oklahoma City OK 73129 Tel 405 946-1093 Fun-fly sessions National Guard Armory Jan 17 Feb 21 1993 annual contest March 21 1993 OklahomaTulsa George Calvert Rt 4 Box 188A Wagoner OK 74467 Tel 918 627-7200 Jan 11 1993 probable plus Feb March dates Tulsa National Guard Armory OregonAlbany Bob Stalick 5066 NW Picadilly Circle Albany OR 97321 Tel 503 928-8101 Four one-day meets two two-day meets November 1992 through February 1993 South Albany High School 41-ft hall 26-ft hail New Indoor postal contest column has previously discussed activities Denver Area Indoor Model Airplane Association DAIMAA University Colorado activity began access CU Balch Fieldhouse exchange managing Indoor model design courses aerospace engineering freshmen seven years over 1000 students have taken courses Beginning 1992 American Institute Aeronautics Astronautics AIAA has made three-year commitment Flying opportunities listings below represent additions changes information presented last month Please refer December 92 MA list site contact persons CDsplease fill dates beginning mid-March later As always please check contact person verify contest schedule before leaving home CanadaOntario area Dan OGrady 50 Largo Crescent Nepean Ontario Canada K2G3C7 Indoor flying MeArthur High School Ottawa Friday nights 7 pm 10pm Jan 8 Jan 15 Jan 22 Jan 29 Feb 5 Feb 12 Feb 19 Feb 26 Mar 5 Mar 12 1993 ConnecticutGlastonbury George Armstead 89 Harvest Lane Glastonbury CT 06037 Tel 203 633-7836 Sessions Jan 10 Feb 7 Mar 7 Apr 41993 Glastonbury High School gym beginning 8 am FloridaMiami Dr John Martin 2180 Tigertail Ave Miami FL 33133 Tel 305 858-6363 MIAMA contests Miami Dade South #4 Feb 1993 #5 Mar 7 1993 Florida State contests #3 Jan 2-3 1993 Delta hangar #4 Feb 13-14 1993 Coast Guard hangar Clearwater #5 Apr 3-4 1993 McDill AFB Always verify schedule calling hot line number above MissouriSt Louis Larry Coslick 4202 Valley Crest Hills St Louis MO 63128 102 Model Aviation E FLIGHT INDOOR Hacker uses Mini-Stick box help get flying sites continue program 1992 flying activity will restricted CU Aerospace Engineering graduates undergraduates program fine-tuned 1993 postal meet will include students universities Kansas Iowa Missouri wider coverage 1994 NFFS will participating also maybe other clubs can institute similar programs elsewhere New source tan rubber Golf balls made Titleist contain central core appears liquid-filled rubber ball Wound core length apparently tan rubber will relax about 0019 x 0060 Im writing after Jim Clem spent two hours unwinding rubber strip two such golf balls Ill relate much story information will have come after tests rubber strong caution Very few golf balls wound rubber others contain liquid under very high pressure cut type golf ball could seriously injured outer cover balls unwound cautiously scored using bandsaw addition ensuring have right safe type ball deep cut will spoil lot rubber start unwinding prepared rubber come off spurts may advisable have someone pull rubber away doesnt pile up floorit seems tangle instantly As rubber strip separates has twists must removed During process will tangle again again unless clever Some comments two golf balls appeared identical twice much rubber salvaged no obvious reason As rubber came off very crinkled ragged appearance Once chance relax dimensions changed rubber smoothed out good Only time will tell certain rubber has under tension stress will require time relax thinner strip will pose problems stripping also Most rotary strippers have guide hold rubber flat goes blades such thin rubber isnt stabilized current guides Testing prop/rubber combinations Sever al years ago Bob Champine suggested using turns-remaining method analyze prop performance apply test 1 Count rpm beginning soon possible after launch recording rpm time measured Continue during flight measurements least three minutes high-ceiling often low-ceiling flights 2 Beginning launch turns compute turns used rpm interval subtract turns left example assume rpm 70 end first minute launch turns 2500 second point turnsremaining curve 250070 2430 remaining points shown accompanying table January1993 103 Continued page 107 Test Prop/Rubber Combinations TimeTurns mmrpmremaining 002500 1702430 26442366 35982306 45622250 55342196 65162145 85052044 104981944 124921848 144851749 164831651 204821459 244811266 284811074 324805881 3648689 PROGRAM SELECTIONDISKETTESELECTION PRICES USA & CANADAPRICESe OVERSEAS SENOPROGRAMiEl EIAEIBDCEJ$65 SENOPROGRAM2C CIADRDCD$55 4 SEND BOTH PROGRAMSEl QAEJBDCfl$105 123 FF Indoor/Tenny Continued page 103 After taking similar curves different props should easier decide prop-rubber combinations changes prop design Laminated structures Indoor models have recently built have used curved laminated wing stab tips laminated rudders general have pleased results necessarily methods used build laminated parts made preshaping soaked balsa drying pieces gluing together thinned Duco cement built first Mini-Stick recently wing tips rudder entire stab outline laminated time tried entirely new approach strips softened water wrapped form still wet difference added second strip used highly dilute white glue between strips approach gives three advantages nondelicate operation No apparent weight disadvantage Excellent stiffness So far third advantage still impression plan build some test strips measure weight vs stiffness current benchmark Mini-Stick stab stab 65 x 16875-in ellipse weighing 0018 oz covered almost unbelievably stiff Laminationstep-by-step balsa used Mini-Stick outlines 003-wide strips cut four-pound C grain 00 16 sheet forms thin cardboard waterproofed thin glue sanded smooth used Slomons Quik Glue lamination glue thinned eight nine drops glue tablespoon water Before wrapping strips waxed forms prevent finished outlines sticking use wax parting agent nitrate gluethe glue may dry properly may degraded badly lamination process 1 Stretch plastic cling wrap tightly across work area create smooth surface 2 Apply parting agent wax whatever form pin work surface 3 Anchor end first strip form wet thoroughly water Continued page 108 New products take maintenance building new heights Custom Cradles Feature Custom molded gray fubing-no ugly tittings Special neoprene foam--impervious fuel oil Folds easy storage Custom design built last Ready use--no building Easily adjusted Lo Boy Standard Large X-Large Legz Tall Boy have everything Call free brochure Dealer Inquires welcome Tall Boy Standard Large X-Large NEW Radio Rack NEW Legz fold box side Lo Boy custom Cradles Lo Boy Standard--i 0 tall 22 long 3 5 wide fuselage $2190 Lo Boy Large--i 4 tall 28 long 5 8 wide fuselage $2590 Lo Boy X-Large--1 6 tall 28 long 8 12 wide fuselage $2890 Tall Boy Custom Cradles Tall Boy Standard--32 tall 22 tong Sto 5 wide fuselage $3490 Tall Boy Large.28 tall 28 long 5 8 wide fuselage $3890 Tall Boy X-Large--26 tall 28 long 8 12 wide fuselage$3890 AccessorIes folded Position Legz.1 8 tall t 8 wide hardware included fits boaes----$2990 Radio Rack--I folds compact protects radio home field 90 prIces Include shipping handling Send check money order today ahlp ups daily e9W4 er4edIm wdac4 3177 East Fort Lowell Road #1 Tucson Arizona 85716 Call today order 1 -800-CRADLE-O 272-3530 January1993 107 DESIGN YOUR OWN RC MODEL SAILPLANE AND ANALYZE ITS FLIGHT PERFORMANCE INTRODUCING TWO NEW EDUCATIONAL COMPUTER PROGRAMS PROGRAM 1 ODEL SAILPLANESOESIGN AND ANALYSIS RS STABILITY AND CONTROL PROGRAM 2 R.C MODEL SAILPLANESSTEADY STATE FLIGHT ANALYSIS C COVERS PERFORMANCE ESTIMATION AND THE DETAILED ANALYSIS OF SOURCES OF DRAG KEY FEATURES aTHE USER MANUALS CONTAIN STEPBYSTEP INSTRUCTION FOR INPUTTING DESIGN DATA BOTH PROGRAMS CONTAIN EXTENSIVE TUTORIAL BACKGROUND MATERIAL IN COLOR GRAPHIC FORMS EQUATIONS AND DATA USED IN THE PROGRAMS ARE CAREFULLY REFERENCED TO STANDARD TEXT BOOKS AND REFERENCE WORKS OF AERONAUTICAL ENGINEERING z MANY EXAMPLES INCLIEJEG COMPUTER REQUIREMENTS 1DM PERSONAL COMPUTER MODEL XT OR AT OR PS2 OR COMPATIBLE COMPUTER RUNNING MSDOS 33 OR LATER b EGA OR VGA COLOR DISPLAY c 316 KB OF COMPUTER MEMORY d HARD DISK DRIVE WITH 35 MB OF AVAILABLE MEMORY e AT LEAST ONE OF THE FOLLOWING DISKETTE DRIVES 35 INl44 MB z B 35 IN 726 KB z C 525 IN L2 MB PRINTER IS OPTIONAL PLEASE NOTE 360 KB DRIVES ARE NOT SUPPORTED TO ORDER CHECK THE APPROPRIATE BOXES ATTACH YOUR CHECK OR MONEY ORDER WITH YOUR MAILING ADDRESS TO STELLAR INSTRUMENT NORTHWEST INC 7 POWDERHORN DRIVE BEND 7701 9554 PRICES RICLUDE FRST CLASS POSTAGE 96 DAY LIMITED WARRANTY Hundreds cowls radial cowls & wheelpants r1150 Super Sportuier Super Fly 25 EZI 1000 HURT SHACK-PLOT uecasnion 25Son FW 1901800 FW 190 Z1900 J3 Cub scale1900 ME-i 00 E1000 PT-101400 PT-19 EZ1000 EON NW GeeBee Model V /4 scale5600 Wheelpants & Fairings4000 Stinson SR 72900 Strong lightweight one-piece construction Exact duplicate manufacturers original 47 Skytrain Set 2 2400 F8F Bearcat 2400 Pitto S2-A 40 2400 Wheelpants 01A long pair 1700 M-ub win tset 012 2000 ACE Seamaster Pod 40 45 .. 2200 Cessna 206 3750 Dalotel 2000 Ru9a Models 1800 Hobbico Extra 300 40 1700 Hobbico P-40 2100 Proctors Nieuport 20C-1 /4 scale 2500 RIO Special Ted Davey 1500 Spitfire 1/4 scale Mick Reeves .. 6000 Stinger Linear 2300 Send $100 catalog Dept MA Rt 1 Box 530 Goodview VA 24095 Wacs 0 w/blisters scale3600 Wbeipants & Fairings 11 long pair3100 ALL OTHER PLANS ---urommansiryrojeet h52200 Hawker Seafury/4 scale5200 RCM Stardoster II2300 Wheelpants 10 long pair2200 Ultimate Biplane Ohio RC3500 EUTOM Beech Staggerwing scale7500 Black Widow2300 Bucker Juogmans 1/4 scal3200 Bucker Jungmnn BU 131/4 scale 3000 Liberty Sport scale6000 Wheelpants 19 long pair4500 Phone orders information call 703 890-6017 9 am-6 pm EDT FF IndoorlTenny Continued page 107 brush waters surface tension will hold strip plastic put will actually ease problem wrapping strip form 4 As soon first strip wrapped anchor second repeat wrapping using dilute glue instead water 5 Let strips dry thoroughly dilute glue makes snug bond plastic use pointed segment sharp double-edged razor blade slide between form film release agent works properly will easy get outline off form prop blades also laminated second prop kept careful weight records Four blades just over two square inches area cut 0009 four-pound balsa total weight blades before lamination 00038 oz after lamination weighed 003 85 oz Based few flights prop still overly stiff new ones could much lighter wood can found Final comments use Slomons glue necessarily recommendation Tony Sutter gave bottle comment dries clearwhich almost true know works very well very dilute solution seemed resist settling out better other dilute white glues would like try glue call 800 553-8940 California 800 423-4135 rest US find nearest dealer months photos shows Vein Hackers Mini-Stick box has found interesting use addition storing models box Vein takes prospective Indoor site site owner wants know just what Vein means about flying model airplanes site Vein has immediate answer Another photo shows recent glider Bruce Kimbell built US Indoor Champs USIC model has several interesting features least removable wing Additional photos show wing place ready flight wing mounting alignment pegs matching tubes Bruce uses strips masking tape over wing pylon hold wing place during flight model weighed 22 grams Bruce feels about three grams too light ETSC Mini-Dome Just recordBruce calls model TWINGE Totally Wild Innovative New Glider Example also notes can twinge arm dont throw right * 1 5 SCHNEURLE THE NEWEST FOX 15 BRINGS NEW STANDARD OF AGAIN AVAILABLE CONSTRUCTION FEATURES Patented Crankcase r Sturdy Replaceable Prop Stud Special 10 mm Ball Bearings Interchangeable CL RC merely bolting another carburetor PERFORMANCE WITHIN REACH OF THE SPORT MODELER Easy Starting newest Fox 15 does have flipped like pro primed just right starts easily beginner expert cold Power Easily powerful side exhasst 15 yos can buy ely approaches power leading rear exhaust full racing motors Long Life Fox Fuel reasonably clean flying conditions can expect order ot 100 hours ot happy trouble-tree flying Reliability New Fox 15 has remarkable ability swallow air bubble fuel line accept over lean over rich setting fuel surge resulting violent maneuver still continue running Crash Resistant will really take hard concrete ruin new Fox 15 Prop stud replaceable modest cost So carb parts complete carb Service best laid plans mice modeltlyers seem occasionally come crashing down happens yos really appreciate owning Fox parts call 501 646-1656 parts will way within 24 hours Complete re-builds now running three days Also reassuring know repair will cost moto s wo th Maximum repair charge will never exceed 50% ot Retail Price ot new moto p us shipping FOX MANUFACTURING Fox Model Airplane Products 5305 Towson Smith AR 72901 6461656 501 6461757 108 Model Aviation ngine2000 000 Super Cub PA-lB scale3500 GREAT PIAIiES 0 1/5 ocale RIrscsOp1000 ong pair1100 ROYMUF fiiI IIT1WD rnt custom work too Fox 15 2 BaIl Bearings #21698 Fox 15 BB RO $8495 #11698 Fox 15 BB CL. $7495
Edition: Model Aviation - 1993/01
Page Numbers: 102, 103, 107, 108
pETE ANDREWS remembered first flier post 30-minute Indoor flight dead Pete Andrews passed away after sixmonth illness Pete influenced people Indoor model design several decades winning Nats events other awards Finally almost retired modeling because seemed no challenges left Frank Cummings another modeling pioneer longtime friend convinced Pete tackle FAI Indoor 1972 Pete became Indoor World Champion after posting flights 3612 3457 134 ahead Czech flier Karol Rybecky favorite memory Pete processing session 72 World Championships Bystanders startled model 5% overweight 3% short span Pete just grinned said doesnt matter others will also remember Pete helped anyone needed always free advice workedno matter asked what question Petes legacy us allan example wisdom helpfulness Tel 314 892-3803 after 730 pm St Louis fliers have arranged series sessions Jefferson College 25 miles south St Louis New YorkBrooklyn Contact Don Ross 38 Churchill Rd Cressklll NJ 07626 Tel 201 568-5272 Activity planned Floyd Bennett Field tentative dates first weekends April May 1993 OklahomaOklahoma City Jim Belson 4933 NW 29th Oklahoma City OK 73129 Tel 405 946-1093 Fun-fly sessions National Guard Armory Jan 17 Feb 21 1993 annual contest March 21 1993 OklahomaTulsa George Calvert Rt 4 Box 188A Wagoner OK 74467 Tel 918 627-7200 Jan 11 1993 probable plus Feb March dates Tulsa National Guard Armory OregonAlbany Bob Stalick 5066 NW Picadilly Circle Albany OR 97321 Tel 503 928-8101 Four one-day meets two two-day meets November 1992 through February 1993 South Albany High School 41-ft hall 26-ft hail New Indoor postal contest column has previously discussed activities Denver Area Indoor Model Airplane Association DAIMAA University Colorado activity began access CU Balch Fieldhouse exchange managing Indoor model design courses aerospace engineering freshmen seven years over 1000 students have taken courses Beginning 1992 American Institute Aeronautics Astronautics AIAA has made three-year commitment Flying opportunities listings below represent additions changes information presented last month Please refer December 92 MA list site contact persons CDsplease fill dates beginning mid-March later As always please check contact person verify contest schedule before leaving home CanadaOntario area Dan OGrady 50 Largo Crescent Nepean Ontario Canada K2G3C7 Indoor flying MeArthur High School Ottawa Friday nights 7 pm 10pm Jan 8 Jan 15 Jan 22 Jan 29 Feb 5 Feb 12 Feb 19 Feb 26 Mar 5 Mar 12 1993 ConnecticutGlastonbury George Armstead 89 Harvest Lane Glastonbury CT 06037 Tel 203 633-7836 Sessions Jan 10 Feb 7 Mar 7 Apr 41993 Glastonbury High School gym beginning 8 am FloridaMiami Dr John Martin 2180 Tigertail Ave Miami FL 33133 Tel 305 858-6363 MIAMA contests Miami Dade South #4 Feb 1993 #5 Mar 7 1993 Florida State contests #3 Jan 2-3 1993 Delta hangar #4 Feb 13-14 1993 Coast Guard hangar Clearwater #5 Apr 3-4 1993 McDill AFB Always verify schedule calling hot line number above MissouriSt Louis Larry Coslick 4202 Valley Crest Hills St Louis MO 63128 102 Model Aviation E FLIGHT INDOOR Hacker uses Mini-Stick box help get flying sites continue program 1992 flying activity will restricted CU Aerospace Engineering graduates undergraduates program fine-tuned 1993 postal meet will include students universities Kansas Iowa Missouri wider coverage 1994 NFFS will participating also maybe other clubs can institute similar programs elsewhere New source tan rubber Golf balls made Titleist contain central core appears liquid-filled rubber ball Wound core length apparently tan rubber will relax about 0019 x 0060 Im writing after Jim Clem spent two hours unwinding rubber strip two such golf balls Ill relate much story information will have come after tests rubber strong caution Very few golf balls wound rubber others contain liquid under very high pressure cut type golf ball could seriously injured outer cover balls unwound cautiously scored using bandsaw addition ensuring have right safe type ball deep cut will spoil lot rubber start unwinding prepared rubber come off spurts may advisable have someone pull rubber away doesnt pile up floorit seems tangle instantly As rubber strip separates has twists must removed During process will tangle again again unless clever Some comments two golf balls appeared identical twice much rubber salvaged no obvious reason As rubber came off very crinkled ragged appearance Once chance relax dimensions changed rubber smoothed out good Only time will tell certain rubber has under tension stress will require time relax thinner strip will pose problems stripping also Most rotary strippers have guide hold rubber flat goes blades such thin rubber isnt stabilized current guides Testing prop/rubber combinations Sever al years ago Bob Champine suggested using turns-remaining method analyze prop performance apply test 1 Count rpm beginning soon possible after launch recording rpm time measured Continue during flight measurements least three minutes high-ceiling often low-ceiling flights 2 Beginning launch turns compute turns used rpm interval subtract turns left example assume rpm 70 end first minute launch turns 2500 second point turnsremaining curve 250070 2430 remaining points shown accompanying table January1993 103 Continued page 107 Test Prop/Rubber Combinations TimeTurns mmrpmremaining 002500 1702430 26442366 35982306 45622250 55342196 65162145 85052044 104981944 124921848 144851749 164831651 204821459 244811266 284811074 324805881 3648689 PROGRAM SELECTIONDISKETTESELECTION PRICES USA & CANADAPRICESe OVERSEAS SENOPROGRAMiEl EIAEIBDCEJ$65 SENOPROGRAM2C CIADRDCD$55 4 SEND BOTH PROGRAMSEl QAEJBDCfl$105 123 FF Indoor/Tenny Continued page 103 After taking similar curves different props should easier decide prop-rubber combinations changes prop design Laminated structures Indoor models have recently built have used curved laminated wing stab tips laminated rudders general have pleased results necessarily methods used build laminated parts made preshaping soaked balsa drying pieces gluing together thinned Duco cement built first Mini-Stick recently wing tips rudder entire stab outline laminated time tried entirely new approach strips softened water wrapped form still wet difference added second strip used highly dilute white glue between strips approach gives three advantages nondelicate operation No apparent weight disadvantage Excellent stiffness So far third advantage still impression plan build some test strips measure weight vs stiffness current benchmark Mini-Stick stab stab 65 x 16875-in ellipse weighing 0018 oz covered almost unbelievably stiff Laminationstep-by-step balsa used Mini-Stick outlines 003-wide strips cut four-pound C grain 00 16 sheet forms thin cardboard waterproofed thin glue sanded smooth used Slomons Quik Glue lamination glue thinned eight nine drops glue tablespoon water Before wrapping strips waxed forms prevent finished outlines sticking use wax parting agent nitrate gluethe glue may dry properly may degraded badly lamination process 1 Stretch plastic cling wrap tightly across work area create smooth surface 2 Apply parting agent wax whatever form pin work surface 3 Anchor end first strip form wet thoroughly water Continued page 108 New products take maintenance building new heights Custom Cradles Feature Custom molded gray fubing-no ugly tittings Special neoprene foam--impervious fuel oil Folds easy storage Custom design built last Ready use--no building Easily adjusted Lo Boy Standard Large X-Large Legz Tall Boy have everything Call free brochure Dealer Inquires welcome Tall Boy Standard Large X-Large NEW Radio Rack NEW Legz fold box side Lo Boy custom Cradles Lo Boy Standard--i 0 tall 22 long 3 5 wide fuselage $2190 Lo Boy Large--i 4 tall 28 long 5 8 wide fuselage $2590 Lo Boy X-Large--1 6 tall 28 long 8 12 wide fuselage $2890 Tall Boy Custom Cradles Tall Boy Standard--32 tall 22 tong Sto 5 wide fuselage $3490 Tall Boy Large.28 tall 28 long 5 8 wide fuselage $3890 Tall Boy X-Large--26 tall 28 long 8 12 wide fuselage$3890 AccessorIes folded Position Legz.1 8 tall t 8 wide hardware included fits boaes----$2990 Radio Rack--I folds compact protects radio home field 90 prIces Include shipping handling Send check money order today ahlp ups daily e9W4 er4edIm wdac4 3177 East Fort Lowell Road #1 Tucson Arizona 85716 Call today order 1 -800-CRADLE-O 272-3530 January1993 107 DESIGN YOUR OWN RC MODEL SAILPLANE AND ANALYZE ITS FLIGHT PERFORMANCE INTRODUCING TWO NEW EDUCATIONAL COMPUTER PROGRAMS PROGRAM 1 ODEL SAILPLANESOESIGN AND ANALYSIS RS STABILITY AND CONTROL PROGRAM 2 R.C MODEL SAILPLANESSTEADY STATE FLIGHT ANALYSIS C COVERS PERFORMANCE ESTIMATION AND THE DETAILED ANALYSIS OF SOURCES OF DRAG KEY FEATURES aTHE USER MANUALS CONTAIN STEPBYSTEP INSTRUCTION FOR INPUTTING DESIGN DATA BOTH PROGRAMS CONTAIN EXTENSIVE TUTORIAL BACKGROUND MATERIAL IN COLOR GRAPHIC FORMS EQUATIONS AND DATA USED IN THE PROGRAMS ARE CAREFULLY REFERENCED TO STANDARD TEXT BOOKS AND REFERENCE WORKS OF AERONAUTICAL ENGINEERING z MANY EXAMPLES INCLIEJEG COMPUTER REQUIREMENTS 1DM PERSONAL COMPUTER MODEL XT OR AT OR PS2 OR COMPATIBLE COMPUTER RUNNING MSDOS 33 OR LATER b EGA OR VGA COLOR DISPLAY c 316 KB OF COMPUTER MEMORY d HARD DISK DRIVE WITH 35 MB OF AVAILABLE MEMORY e AT LEAST ONE OF THE FOLLOWING DISKETTE DRIVES 35 INl44 MB z B 35 IN 726 KB z C 525 IN L2 MB PRINTER IS OPTIONAL PLEASE NOTE 360 KB DRIVES ARE NOT SUPPORTED TO ORDER CHECK THE APPROPRIATE BOXES ATTACH YOUR CHECK OR MONEY ORDER WITH YOUR MAILING ADDRESS TO STELLAR INSTRUMENT NORTHWEST INC 7 POWDERHORN DRIVE BEND 7701 9554 PRICES RICLUDE FRST CLASS POSTAGE 96 DAY LIMITED WARRANTY Hundreds cowls radial cowls & wheelpants r1150 Super Sportuier Super Fly 25 EZI 1000 HURT SHACK-PLOT uecasnion 25Son FW 1901800 FW 190 Z1900 J3 Cub scale1900 ME-i 00 E1000 PT-101400 PT-19 EZ1000 EON NW GeeBee Model V /4 scale5600 Wheelpants & Fairings4000 Stinson SR 72900 Strong lightweight one-piece construction Exact duplicate manufacturers original 47 Skytrain Set 2 2400 F8F Bearcat 2400 Pitto S2-A 40 2400 Wheelpants 01A long pair 1700 M-ub win tset 012 2000 ACE Seamaster Pod 40 45 .. 2200 Cessna 206 3750 Dalotel 2000 Ru9a Models 1800 Hobbico Extra 300 40 1700 Hobbico P-40 2100 Proctors Nieuport 20C-1 /4 scale 2500 RIO Special Ted Davey 1500 Spitfire 1/4 scale Mick Reeves .. 6000 Stinger Linear 2300 Send $100 catalog Dept MA Rt 1 Box 530 Goodview VA 24095 Wacs 0 w/blisters scale3600 Wbeipants & Fairings 11 long pair3100 ALL OTHER PLANS ---urommansiryrojeet h52200 Hawker Seafury/4 scale5200 RCM Stardoster II2300 Wheelpants 10 long pair2200 Ultimate Biplane Ohio RC3500 EUTOM Beech Staggerwing scale7500 Black Widow2300 Bucker Juogmans 1/4 scal3200 Bucker Jungmnn BU 131/4 scale 3000 Liberty Sport scale6000 Wheelpants 19 long pair4500 Phone orders information call 703 890-6017 9 am-6 pm EDT FF IndoorlTenny Continued page 107 brush waters surface tension will hold strip plastic put will actually ease problem wrapping strip form 4 As soon first strip wrapped anchor second repeat wrapping using dilute glue instead water 5 Let strips dry thoroughly dilute glue makes snug bond plastic use pointed segment sharp double-edged razor blade slide between form film release agent works properly will easy get outline off form prop blades also laminated second prop kept careful weight records Four blades just over two square inches area cut 0009 four-pound balsa total weight blades before lamination 00038 oz after lamination weighed 003 85 oz Based few flights prop still overly stiff new ones could much lighter wood can found Final comments use Slomons glue necessarily recommendation Tony Sutter gave bottle comment dries clearwhich almost true know works very well very dilute solution seemed resist settling out better other dilute white glues would like try glue call 800 553-8940 California 800 423-4135 rest US find nearest dealer months photos shows Vein Hackers Mini-Stick box has found interesting use addition storing models box Vein takes prospective Indoor site site owner wants know just what Vein means about flying model airplanes site Vein has immediate answer Another photo shows recent glider Bruce Kimbell built US Indoor Champs USIC model has several interesting features least removable wing Additional photos show wing place ready flight wing mounting alignment pegs matching tubes Bruce uses strips masking tape over wing pylon hold wing place during flight model weighed 22 grams Bruce feels about three grams too light ETSC Mini-Dome Just recordBruce calls model TWINGE Totally Wild Innovative New Glider Example also notes can twinge arm dont throw right * 1 5 SCHNEURLE THE NEWEST FOX 15 BRINGS NEW STANDARD OF AGAIN AVAILABLE CONSTRUCTION FEATURES Patented Crankcase r Sturdy Replaceable Prop Stud Special 10 mm Ball Bearings Interchangeable CL RC merely bolting another carburetor PERFORMANCE WITHIN REACH OF THE SPORT MODELER Easy Starting newest Fox 15 does have flipped like pro primed just right starts easily beginner expert cold Power Easily powerful side exhasst 15 yos can buy ely approaches power leading rear exhaust full racing motors Long Life Fox Fuel reasonably clean flying conditions can expect order ot 100 hours ot happy trouble-tree flying Reliability New Fox 15 has remarkable ability swallow air bubble fuel line accept over lean over rich setting fuel surge resulting violent maneuver still continue running Crash Resistant will really take hard concrete ruin new Fox 15 Prop stud replaceable modest cost So carb parts complete carb Service best laid plans mice modeltlyers seem occasionally come crashing down happens yos really appreciate owning Fox parts call 501 646-1656 parts will way within 24 hours Complete re-builds now running three days Also reassuring know repair will cost moto s wo th Maximum repair charge will never exceed 50% ot Retail Price ot new moto p us shipping FOX MANUFACTURING Fox Model Airplane Products 5305 Towson Smith AR 72901 6461656 501 6461757 108 Model Aviation ngine2000 000 Super Cub PA-lB scale3500 GREAT PIAIiES 0 1/5 ocale RIrscsOp1000 ong pair1100 ROYMUF fiiI IIT1WD rnt custom work too Fox 15 2 BaIl Bearings #21698 Fox 15 BB RO $8495 #11698 Fox 15 BB CL. $7495
Edition: Model Aviation - 1993/01
Page Numbers: 102, 103, 107, 108
pETE ANDREWS remembered first flier post 30-minute Indoor flight dead Pete Andrews passed away after sixmonth illness Pete influenced people Indoor model design several decades winning Nats events other awards Finally almost retired modeling because seemed no challenges left Frank Cummings another modeling pioneer longtime friend convinced Pete tackle FAI Indoor 1972 Pete became Indoor World Champion after posting flights 3612 3457 134 ahead Czech flier Karol Rybecky favorite memory Pete processing session 72 World Championships Bystanders startled model 5% overweight 3% short span Pete just grinned said doesnt matter others will also remember Pete helped anyone needed always free advice workedno matter asked what question Petes legacy us allan example wisdom helpfulness Tel 314 892-3803 after 730 pm St Louis fliers have arranged series sessions Jefferson College 25 miles south St Louis New YorkBrooklyn Contact Don Ross 38 Churchill Rd Cressklll NJ 07626 Tel 201 568-5272 Activity planned Floyd Bennett Field tentative dates first weekends April May 1993 OklahomaOklahoma City Jim Belson 4933 NW 29th Oklahoma City OK 73129 Tel 405 946-1093 Fun-fly sessions National Guard Armory Jan 17 Feb 21 1993 annual contest March 21 1993 OklahomaTulsa George Calvert Rt 4 Box 188A Wagoner OK 74467 Tel 918 627-7200 Jan 11 1993 probable plus Feb March dates Tulsa National Guard Armory OregonAlbany Bob Stalick 5066 NW Picadilly Circle Albany OR 97321 Tel 503 928-8101 Four one-day meets two two-day meets November 1992 through February 1993 South Albany High School 41-ft hall 26-ft hail New Indoor postal contest column has previously discussed activities Denver Area Indoor Model Airplane Association DAIMAA University Colorado activity began access CU Balch Fieldhouse exchange managing Indoor model design courses aerospace engineering freshmen seven years over 1000 students have taken courses Beginning 1992 American Institute Aeronautics Astronautics AIAA has made three-year commitment Flying opportunities listings below represent additions changes information presented last month Please refer December 92 MA list site contact persons CDsplease fill dates beginning mid-March later As always please check contact person verify contest schedule before leaving home CanadaOntario area Dan OGrady 50 Largo Crescent Nepean Ontario Canada K2G3C7 Indoor flying MeArthur High School Ottawa Friday nights 7 pm 10pm Jan 8 Jan 15 Jan 22 Jan 29 Feb 5 Feb 12 Feb 19 Feb 26 Mar 5 Mar 12 1993 ConnecticutGlastonbury George Armstead 89 Harvest Lane Glastonbury CT 06037 Tel 203 633-7836 Sessions Jan 10 Feb 7 Mar 7 Apr 41993 Glastonbury High School gym beginning 8 am FloridaMiami Dr John Martin 2180 Tigertail Ave Miami FL 33133 Tel 305 858-6363 MIAMA contests Miami Dade South #4 Feb 1993 #5 Mar 7 1993 Florida State contests #3 Jan 2-3 1993 Delta hangar #4 Feb 13-14 1993 Coast Guard hangar Clearwater #5 Apr 3-4 1993 McDill AFB Always verify schedule calling hot line number above MissouriSt Louis Larry Coslick 4202 Valley Crest Hills St Louis MO 63128 102 Model Aviation E FLIGHT INDOOR Hacker uses Mini-Stick box help get flying sites continue program 1992 flying activity will restricted CU Aerospace Engineering graduates undergraduates program fine-tuned 1993 postal meet will include students universities Kansas Iowa Missouri wider coverage 1994 NFFS will participating also maybe other clubs can institute similar programs elsewhere New source tan rubber Golf balls made Titleist contain central core appears liquid-filled rubber ball Wound core length apparently tan rubber will relax about 0019 x 0060 Im writing after Jim Clem spent two hours unwinding rubber strip two such golf balls Ill relate much story information will have come after tests rubber strong caution Very few golf balls wound rubber others contain liquid under very high pressure cut type golf ball could seriously injured outer cover balls unwound cautiously scored using bandsaw addition ensuring have right safe type ball deep cut will spoil lot rubber start unwinding prepared rubber come off spurts may advisable have someone pull rubber away doesnt pile up floorit seems tangle instantly As rubber strip separates has twists must removed During process will tangle again again unless clever Some comments two golf balls appeared identical twice much rubber salvaged no obvious reason As rubber came off very crinkled ragged appearance Once chance relax dimensions changed rubber smoothed out good Only time will tell certain rubber has under tension stress will require time relax thinner strip will pose problems stripping also Most rotary strippers have guide hold rubber flat goes blades such thin rubber isnt stabilized current guides Testing prop/rubber combinations Sever al years ago Bob Champine suggested using turns-remaining method analyze prop performance apply test 1 Count rpm beginning soon possible after launch recording rpm time measured Continue during flight measurements least three minutes high-ceiling often low-ceiling flights 2 Beginning launch turns compute turns used rpm interval subtract turns left example assume rpm 70 end first minute launch turns 2500 second point turnsremaining curve 250070 2430 remaining points shown accompanying table January1993 103 Continued page 107 Test Prop/Rubber Combinations TimeTurns mmrpmremaining 002500 1702430 26442366 35982306 45622250 55342196 65162145 85052044 104981944 124921848 144851749 164831651 204821459 244811266 284811074 324805881 3648689 PROGRAM SELECTIONDISKETTESELECTION PRICES USA & CANADAPRICESe OVERSEAS SENOPROGRAMiEl EIAEIBDCEJ$65 SENOPROGRAM2C CIADRDCD$55 4 SEND BOTH PROGRAMSEl QAEJBDCfl$105 123 FF Indoor/Tenny Continued page 103 After taking similar curves different props should easier decide prop-rubber combinations changes prop design Laminated structures Indoor models have recently built have used curved laminated wing stab tips laminated rudders general have pleased results necessarily methods used build laminated parts made preshaping soaked balsa drying pieces gluing together thinned Duco cement built first Mini-Stick recently wing tips rudder entire stab outline laminated time tried entirely new approach strips softened water wrapped form still wet difference added second strip used highly dilute white glue between strips approach gives three advantages nondelicate operation No apparent weight disadvantage Excellent stiffness So far third advantage still impression plan build some test strips measure weight vs stiffness current benchmark Mini-Stick stab stab 65 x 16875-in ellipse weighing 0018 oz covered almost unbelievably stiff Laminationstep-by-step balsa used Mini-Stick outlines 003-wide strips cut four-pound C grain 00 16 sheet forms thin cardboard waterproofed thin glue sanded smooth used Slomons Quik Glue lamination glue thinned eight nine drops glue tablespoon water Before wrapping strips waxed forms prevent finished outlines sticking use wax parting agent nitrate gluethe glue may dry properly may degraded badly lamination process 1 Stretch plastic cling wrap tightly across work area create smooth surface 2 Apply parting agent wax whatever form pin work surface 3 Anchor end first strip form wet thoroughly water Continued page 108 New products take maintenance building new heights Custom Cradles Feature Custom molded gray fubing-no ugly tittings Special neoprene foam--impervious fuel oil Folds easy storage Custom design built last Ready use--no building Easily adjusted Lo Boy Standard Large X-Large Legz Tall Boy have everything Call free brochure Dealer Inquires welcome Tall Boy Standard Large X-Large NEW Radio Rack NEW Legz fold box side Lo Boy custom Cradles Lo Boy Standard--i 0 tall 22 long 3 5 wide fuselage $2190 Lo Boy Large--i 4 tall 28 long 5 8 wide fuselage $2590 Lo Boy X-Large--1 6 tall 28 long 8 12 wide fuselage $2890 Tall Boy Custom Cradles Tall Boy Standard--32 tall 22 tong Sto 5 wide fuselage $3490 Tall Boy Large.28 tall 28 long 5 8 wide fuselage $3890 Tall Boy X-Large--26 tall 28 long 8 12 wide fuselage$3890 AccessorIes folded Position Legz.1 8 tall t 8 wide hardware included fits boaes----$2990 Radio Rack--I folds compact protects radio home field 90 prIces Include shipping handling Send check money order today ahlp ups daily e9W4 er4edIm wdac4 3177 East Fort Lowell Road #1 Tucson Arizona 85716 Call today order 1 -800-CRADLE-O 272-3530 January1993 107 DESIGN YOUR OWN RC MODEL SAILPLANE AND ANALYZE ITS FLIGHT PERFORMANCE INTRODUCING TWO NEW EDUCATIONAL COMPUTER PROGRAMS PROGRAM 1 ODEL SAILPLANESOESIGN AND ANALYSIS RS STABILITY AND CONTROL PROGRAM 2 R.C MODEL SAILPLANESSTEADY STATE FLIGHT ANALYSIS C COVERS PERFORMANCE ESTIMATION AND THE DETAILED ANALYSIS OF SOURCES OF DRAG KEY FEATURES aTHE USER MANUALS CONTAIN STEPBYSTEP INSTRUCTION FOR INPUTTING DESIGN DATA BOTH PROGRAMS CONTAIN EXTENSIVE TUTORIAL BACKGROUND MATERIAL IN COLOR GRAPHIC FORMS EQUATIONS AND DATA USED IN THE PROGRAMS ARE CAREFULLY REFERENCED TO STANDARD TEXT BOOKS AND REFERENCE WORKS OF AERONAUTICAL ENGINEERING z MANY EXAMPLES INCLIEJEG COMPUTER REQUIREMENTS 1DM PERSONAL COMPUTER MODEL XT OR AT OR PS2 OR COMPATIBLE COMPUTER RUNNING MSDOS 33 OR LATER b EGA OR VGA COLOR DISPLAY c 316 KB OF COMPUTER MEMORY d HARD DISK DRIVE WITH 35 MB OF AVAILABLE MEMORY e AT LEAST ONE OF THE FOLLOWING DISKETTE DRIVES 35 INl44 MB z B 35 IN 726 KB z C 525 IN L2 MB PRINTER IS OPTIONAL PLEASE NOTE 360 KB DRIVES ARE NOT SUPPORTED TO ORDER CHECK THE APPROPRIATE BOXES ATTACH YOUR CHECK OR MONEY ORDER WITH YOUR MAILING ADDRESS TO STELLAR INSTRUMENT NORTHWEST INC 7 POWDERHORN DRIVE BEND 7701 9554 PRICES RICLUDE FRST CLASS POSTAGE 96 DAY LIMITED WARRANTY Hundreds cowls radial cowls & wheelpants r1150 Super Sportuier Super Fly 25 EZI 1000 HURT SHACK-PLOT uecasnion 25Son FW 1901800 FW 190 Z1900 J3 Cub scale1900 ME-i 00 E1000 PT-101400 PT-19 EZ1000 EON NW GeeBee Model V /4 scale5600 Wheelpants & Fairings4000 Stinson SR 72900 Strong lightweight one-piece construction Exact duplicate manufacturers original 47 Skytrain Set 2 2400 F8F Bearcat 2400 Pitto S2-A 40 2400 Wheelpants 01A long pair 1700 M-ub win tset 012 2000 ACE Seamaster Pod 40 45 .. 2200 Cessna 206 3750 Dalotel 2000 Ru9a Models 1800 Hobbico Extra 300 40 1700 Hobbico P-40 2100 Proctors Nieuport 20C-1 /4 scale 2500 RIO Special Ted Davey 1500 Spitfire 1/4 scale Mick Reeves .. 6000 Stinger Linear 2300 Send $100 catalog Dept MA Rt 1 Box 530 Goodview VA 24095 Wacs 0 w/blisters scale3600 Wbeipants & Fairings 11 long pair3100 ALL OTHER PLANS ---urommansiryrojeet h52200 Hawker Seafury/4 scale5200 RCM Stardoster II2300 Wheelpants 10 long pair2200 Ultimate Biplane Ohio RC3500 EUTOM Beech Staggerwing scale7500 Black Widow2300 Bucker Juogmans 1/4 scal3200 Bucker Jungmnn BU 131/4 scale 3000 Liberty Sport scale6000 Wheelpants 19 long pair4500 Phone orders information call 703 890-6017 9 am-6 pm EDT FF IndoorlTenny Continued page 107 brush waters surface tension will hold strip plastic put will actually ease problem wrapping strip form 4 As soon first strip wrapped anchor second repeat wrapping using dilute glue instead water 5 Let strips dry thoroughly dilute glue makes snug bond plastic use pointed segment sharp double-edged razor blade slide between form film release agent works properly will easy get outline off form prop blades also laminated second prop kept careful weight records Four blades just over two square inches area cut 0009 four-pound balsa total weight blades before lamination 00038 oz after lamination weighed 003 85 oz Based few flights prop still overly stiff new ones could much lighter wood can found Final comments use Slomons glue necessarily recommendation Tony Sutter gave bottle comment dries clearwhich almost true know works very well very dilute solution seemed resist settling out better other dilute white glues would like try glue call 800 553-8940 California 800 423-4135 rest US find nearest dealer months photos shows Vein Hackers Mini-Stick box has found interesting use addition storing models box Vein takes prospective Indoor site site owner wants know just what Vein means about flying model airplanes site Vein has immediate answer Another photo shows recent glider Bruce Kimbell built US Indoor Champs USIC model has several interesting features least removable wing Additional photos show wing place ready flight wing mounting alignment pegs matching tubes Bruce uses strips masking tape over wing pylon hold wing place during flight model weighed 22 grams Bruce feels about three grams too light ETSC Mini-Dome Just recordBruce calls model TWINGE Totally Wild Innovative New Glider Example also notes can twinge arm dont throw right * 1 5 SCHNEURLE THE NEWEST FOX 15 BRINGS NEW STANDARD OF AGAIN AVAILABLE CONSTRUCTION FEATURES Patented Crankcase r Sturdy Replaceable Prop Stud Special 10 mm Ball Bearings Interchangeable CL RC merely bolting another carburetor PERFORMANCE WITHIN REACH OF THE SPORT MODELER Easy Starting newest Fox 15 does have flipped like pro primed just right starts easily beginner expert cold Power Easily powerful side exhasst 15 yos can buy ely approaches power leading rear exhaust full racing motors Long Life Fox Fuel reasonably clean flying conditions can expect order ot 100 hours ot happy trouble-tree flying Reliability New Fox 15 has remarkable ability swallow air bubble fuel line accept over lean over rich setting fuel surge resulting violent maneuver still continue running Crash Resistant will really take hard concrete ruin new Fox 15 Prop stud replaceable modest cost So carb parts complete carb Service best laid plans mice modeltlyers seem occasionally come crashing down happens yos really appreciate owning Fox parts call 501 646-1656 parts will way within 24 hours Complete re-builds now running three days Also reassuring know repair will cost moto s wo th Maximum repair charge will never exceed 50% ot Retail Price ot new moto p us shipping FOX MANUFACTURING Fox Model Airplane Products 5305 Towson Smith AR 72901 6461656 501 6461757 108 Model Aviation ngine2000 000 Super Cub PA-lB scale3500 GREAT PIAIiES 0 1/5 ocale RIrscsOp1000 ong pair1100 ROYMUF fiiI IIT1WD rnt custom work too Fox 15 2 BaIl Bearings #21698 Fox 15 BB RO $8495 #11698 Fox 15 BB CL. $7495