Radio Control Scale Bob & Dolly Wischer REPORT FROM PARIS definite reaction consequences com plexity bonus system now has done what originally intended past simple aircraft desirable model subjects because could detailed finished minimum effort also reasonable assurance model would fly well scalelike manner bonus system instituted give models complex aircraft sup posedly equal chance become contest winners Recent experience indicates complex multi-engine multi-func tion airplanes now have equal chance exclusion simpler designs balance between types has shifted too drastically other words modelers choice aircraft built now influenced favor complexity again obligated build model suits rules rather airplane really prefers long-time ideal aircraft models should have equal chance competition success remains illusion future can expect size bonuses will reviewed particu larly regard number engines landing gear retraction decisions present airplane build shouldnt unduly influenced foregoing FAT rules frozen un til January 1989 plenty time construct models capble taking advan tage bonuses available original intent compensate models com plex prototypes inherent disadvan tages flight example fourengined model given 20% bonus add ed its flight score reality fourengine model can lose engine during flight yet continue almost undis turbed twin-engined model having 10% bonus may dire difficul ty engine quits us have built flown twins well aware flaw imbalance bonuses evident However agreed some twins susceptible yaw snaproll problems flown engine Catalina flying boat Bob Under woods Alcor come mind being excep tionally stable flown engine throttled Both have built-in advantage having engines mounted near aircraft centerline distant future January 1989 complexity bonus 10% will awarded flight scores single ducted fans 20% twins Landing gear retraction another item may subject reduction bonus argued modern landing gear mechanisms models have become reliable 10% bonus too generous modelers have con structed own mechanisms certainly deserve full 10% should probably given award basis craftsmanship rather award flight disadvantage Countering expected proposal reduce 10% bonus 5% observations 1984 LeBourget World Championship point out winning airplanes gear retractable although should have third-place models retracts source serious shortcoming Apparently use commercial retract mechanisms no guarantee secure landings 10% bonus should therefore retained US proposal requested weight increase 7 kg 154 lbs accepted effective January 1 1989 increase tied three other items removal restrictions total surface area wing loading in48 Model Aviation Dave Nellie Navy Lockheed Hercules construcica mostiy foam hence its reason ably light 9 ibflies four 08 Max 10 FSR engines Span 80 finish acrylic lacquer over epoxy resin auto primer Hope puts scale props Jack Moores Great Lakes 2T1A Trainer rests Trexier air wheels scratchbuilt Wylam drawings MAN Metal panels made aiuminum bever age can Covering Sliron butyrate dope Craft 161/6-scale spans 54 weighs 9 lb Ray TInley built Rearwin Speedster RCM plans Powered Supertlgre 23 its superfinish K&B epoxyoverCoverite Classic ship spans 48 weighs 41/a lb crease two-stroke engine displacements match four-strokes wingloading specification has best chance being changed especially will ing accept moderate increase rather complete deletion Obtaining accep tance doubling two-stroke engine displacement may bit difficult although trend toward larger engines worldwide new proposal next years meeting should written individual item tied other changes increase total surface area com bined wing horizontal tail least likely gain acceptance since part general characteristics specifications FAI models case four-year wait until rules eligible change no great hurry action items AMA Sport Scale rules Proce dure Turn maneuver performed conjunction Straight Flight maneuver Under changed FAI rules effective immediately clarification Procedure Turn must now per formed directly front judges same position Figure Eight always done turn manner exact positioning never spelled out rules Static judging will done minimum distance meter 39 nearest part model method used US FAI events Europe measured distance models center NASA The National Association Scale Aeromodelers voice Scale US John Guenther NASA will conducting team selection trials year preparation next World Championships Control Line RC Scale Championships will held Norway probably June 1986 become active Scale organization join NASA sending $6 John Guenther RR #1 Box 715 Borden IN 47106 Scale data source booklet offering list Scale data sources mostly England has compiled Michael Smith 68 Armoury Drive Gravesend Kent DA12 lNB England Its price $2 postpaid list includes three-view sources bookshops libraries associa tions photo sources periodicals have experience using some sources listed obtain photos British French aircraft Three-view drawiags latest Historical Aviation Album has three-view drawings photos informational data Continued vase 144 Larry Pierce brought /4-scale Miles HawK L w xne l%ltcnenerWaterloo Scaie Rally Quadra 35cc files 21 -lb craft Finish poly urethane paint over polyester resin silkspan paper Wait Mouchas latest project Citabria Aerobatic Pro R Power 05 90 4-stroke Span 781/2 weight 11 lb Wait says files like dreamalready has plans larger -scale version 1 2-ft span BALSA SHEETS36 1/16233 3132 240 1/B 242 3/16248 1/4 256 1/32337 1/20337 1/163374931 3/323445837 1/8 35471 3/1636282 1/4 3730561 5/16385 3/B 38912471 1/2 3110155 3/4 3165 1/164587648 3/324709456 1/8 48010666 3/1649312275 1/4 411013464 3/8 225 1/2 4225261 MATCHED SHEETS42 3/324140 1/84108 3/164120 1/44131 BALSA ST/CKS 1/16 1/4 1/16 3/8 1/16 1/2 3/32 1/4 3/32 3/8 3/32 1/2 1/B 1/8 1/8 1/4 1/9 3/8 18 1/2 3/163/16 3/16 3/8 3/16 1/2 1/4 1/4 1/4 3/8 1/4 1/2 1/4 3/4 1/41 5/165/16 3/8 3/8 3/8 1/2 3/8 3/4 3/81 12 1/2 1/2 3/4 1/21 5/8 5/8 3/4 3/4 36 89 10 14 10 12 16 08 11 1218 18 11 17 22 16 18 21 34 40 2128 27 32 4255 52 36 4662 58 48 87 BALSA HOT LINE Call 806 745-6394 lOam 6 pm Central lime LONE STAR MODELS 1623 57th St Lubbock TX 79412 BALSATRIANGLES36 141/425 3/83/830 121/234 3/43/445 1155 BALSA PLANKS36 1185 12150 13200 14280 11/23275 11/24360 22225 23325 24435 33488 34668 TAPERED SHEETS36 1/4265 1/4385 3/8268 3/8398 1/23120 LONE STAR EPOXY 9,L/1.895 555598 15,/598 30 rein598 49 49 49 58 67 78 85 115 139 220 300 78 91 100 117 138 207 282 TRA/LING EDGE36 1/4132 5/161 1/435 3/81 1/246 1/2270 NOTANT GLUE 1 k298 1 z Thi298 2, Thick555 2 Thi555 BASSWOOD 3/183/16 3/161/4 3/16 3/8 3/161/2 3/16 3/4 1/4 1/4 1/43/8 1/4 3/4 3/8 3/B 3/8 1/2 3/8 3/4 1/21/2 1/23/4 26 30 3B 49 60 42 49 80 60 70 90 90 155 BUNDLE DEALS 201/6336885 201/164361020 203/32 336945 103/32436955 151/8336715 101/8436875 153/18336955 103/18438810 101/4336630 101/4436890 103/8 336850 03/8436625 01/2336540 51/2 438855 103/32448845 01/8449485 53/18448585 51/4448625 PINE STICKS 1/B cl/B 1/81/4 1/63/B 3/18316 3/16 3/B 3/16 1/2 1/41/4 1/4 3/8 1/41/2 3/B 3/B 36 4B 13 1623 20 1724 2332 30 2637 3042 3447 3752 SPRUCE STICKS 36 48 1/B 1/815 1/8 1/41624 1/8 3/620 3/163/162534 1/4 1/43145 1/4 3/83650 3/B 3/84563 3/8 1/25570 1/2 1/26080 1/2 3/468 89 SPRUCE TR/ANGLE 36 3/8 3/8 45 1/21/261 3/43/477 1/88 1/812 L/TE PLY 49 155 300 HARD MAPLE 18 1/4 3/8 3/8 3/8 3/81/2 3/8 3/4 1/23/4 B/RCH DOWELS36 1/859 3/1811 1/414 5/1625 3/B32 3 PLY BIRCH 49 16412525 1/3212425 1/1612435 1/812480 PLY 8/RCH 48 3/3212570 1/812585 3/1812585 1/412680 GROOVED LG MOUNTS 12 inch, 3/63/4/1/8/ 40 3/8c3/4/5/32/ 40 1/23/4/3/16/ 45 April 1985 49 WE ARE SHOOTING DOW N HIGH BALSA PRICES WITH SUPER QUALITY Satisfaction Guaranteed Direct Only 49 3848 CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% serious modeler want performance must try 4-6 lb balsa 40 LIGHT 46 L8 3645 1/32350 1/20358 1/1636B 3/323 1/83 3/163 1/43 3/83 1/23 3/43 13 1/184 3/324 1/84 3/164 1/44 3/84 1/24 Handling Charge$300 pay UPS Add $200 COD $300 extra PP APO FPO '" ~ -I checks COD 4-1/8% 18/n Te, US curcency M/immOrderS1000 Model Magic Epoxy Plus 2 Part 8 Mm Use anywhere two part epoxy used 25% Lighter Sandable Carveable Excellent Gap Filling Non-Sagging Superior Strength Sands Carves like Basswood! Sf1 ozl Equal over 8 wt oz regular epoxys See dealer first write call Model Magic Filler 0 0 S 0 W4PO Box 19784 St Paul MN 551190 715425-13970 MODEL MAGIC PRODUCTS Comparison Chart Model Magic Product X Adhesion BalsaExcellent Foam Fiberglass Strength Flexing Spreading Fuel ResistanceGood Sanding Ax med balsa Hardness Ax hard balsa FinishingAny finishicovering Shelf Life used up Tint AcceptanceExcellent water ResistExcellent Text methods data available request care enough fill very best very Poorinsist Model Magic Filler Circus Magic Filler Soft balsa Soft balsa 5-7 mo very Poor Eglin Aero Modelers know hard practiced prepare contest often practiced too dark fly comfortably fact often arrived just packing up leave Great job Steve Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Scale/Wischers Continued page 49 Standard J-l Fairchild FC-1 FC-2 FC-2W Consolidated-Vultee Catalina PRY-SA Cessna T-50 Bobcat new book contains 14 drawing sheets 195 photos Well-known modelers contributed books contents George Clapp Nats contestant countrys expert Fairchild air planes Col John deVries writer Scale column RCM magazine Paul Matt has published Album series volume 17 $10 postpaid Historical Aviation Album PO Box 33 Temple City CA 91780 Also available time writing limited supply back issues Album Send SASE above address list 114 enlarged three-view drawings published Album elsewhere Paul Matt have built five models using drawings contained Albums over period 18 years Metal-like finish Duplicating surface texture detail metal prototype challenge Scale modelers current World Champion David Masterton covered deHavilland Drover Trimotor 0035 aluminum alloy sheet metal specially rolled thickness hardness would permit handling damage Underneath alumi num skin standard balsa wood airplane individual piece alumi num embossed reverse side indentations form simulated rivets parts contactcemented balsa structure after forming fit shape model painted several other models LeBourget finished metal over balsa complete ly all-metal miniature copy French Cricket Very few modelers have necessary skill tools required produce such masterpiece metal Most us would search another method simulate metal-clad airplane Requests infor mation subject never seem end letters verbally though described system column about five years ago No doubt other methods possibly better repeated elaborations models structure given usual treatment sandpaper Glue joints stand above surrounding surfaces must taken down carefully using sanding block avoid removing balsa adjacent joint Any such ridge high point will plainly visible finished surface removed initially pronounced ridges strip-planked fuselage Cyanoacrylate CyA glues will harden balsa near joint joints arent really difficult sand smooth using block back up sandpaper trick sand joint avoid pressure softer balsa side Fiberglass cloth 3/ ounce per square yard lighter base material simulated metal finish impregnated polyester finishing resin such Sig K&B Heavier resin used boat building auto body repair too heavy purpose difficult sand adds unncessary weight Polyester resin will harden over doped surface should used over bare balsa glass cloth cut size slightly larger area covered fuselage can usually covered two pieces side small overlap along top bottom centerlines cloth follows compound curves nose tail very easily laid dry over balsa resin applied through cloth stiff-bristled brush Stiff bristles help move resin along thin layer laid down An expensive tinners acid flux brush ideal NI STARTER revolutionary concep model engines uxed boats cars airplanes NI STARTERITMI uses HeadiockiTMi adapter locks onto glow plugs start engine Fits pocket comes CI1O charger has LED lights up charging Rechargeable hundreds times gives over 50 consecutive starts recharging Available charger Send ad along prepayment receive free shipping handling $2495 Charger NI-STARTER $2495 charger ii iov 220V 1 2V fast chargeri NI-STARTER $1595 charger Chargers$1295 charger ii iov 220v 12V fast chargeri PLEASE SPECIFY WHICH CHARGER WHEN ORDERING 12421 RANSOM DRIVE GLENN DALE MD 20769301 464-2260 L Super sport flier turnaround pattern Balsa & ply construcelon 70 span 927 sq area 139w 7A -8A lbs 75-12culn Dealer Inquiry Invited Cleveland Ave SW Canfon OH 44707 Send $1 Catalog 846810 ROUSH MFG 144 Model Aviation $595 Sf1 ozi Fillets Filling Repair RA MFG OF NI-STAITEE purpose can discarded resin hardens too quickly before can cleaned dope thinner acetone large quantities resin mixed hardener may begin set before can completely used Smaller amounts ounce time easily managed stopping middle cloth piece presents no problem Clean brush thinner mix fresh one-ounce batch continue After area covered resin excess can removed absorbent tissue process aids pressing cloth close contact balsa Once resin begins set up its too late using tissue new sharp razor blade cuts away excess cloth along edge can done just before resin has gelled Fumes resin can hazardous health Keep room ventilated Resin hardener methyl ethyl ketone peroxide can cause blindness Protect eyes second coat resin may neded exposed filaments glass visible surface second coat should added sparingly stretching brushful its limit Resin weight mixing cup same amount model no evaporation solvents light sanding between coats silicon carbide No 180 sandpaper will remove small high spots Avoid sanding down glass because its thickness very small point weave glass cloth remains visible filler required fill weave can popular fillers easy sand since weighty material will removed K&B Primer Ditzler No 32 Primer suitable examples can sprayed brushed Sanding first 180-grit silicon carbide paper will remove excess primer care must taken step sand down cloth final polish 320-grit silicon carbide paper will remove small scratches coarse sanding give surface smooth metal-like finish amount sanding has effect models weight because primers quite heavy compared reasonably light cloth resin underneath Panel lines rivets model will lift out ordinary class Lines produced means masking tape layer tape average depth two heavy panel lines Unthinned primer brushed along edge tape dry primer sanded down sur face feathered adjacent area Remove tape panel line appears curved lines edges fillets exam ple use vinyl electrical tape lines intersect sanding operation must done care avoid removing exist ing line No single finishing operation can realistic surface application panel lines Round-head rivets can simulated droplets Wilhold R/C-56 glue Woin Jet Age Air Force 1@ Ih I I I Jet Age Ducted Fans 5 6 units featuring blade tip seals suspension mountings Jet Age fan future Lear Jet Length 94 Width 76 Weight 18 lbs SR-71 Length 107 Width 54 Weight 22 lbs S3A ng Length 54 Width 68 Weight 12 ib I I I I ii Send $200 A5428 Bushneii COMPLETE BROCHUREI UIRiverside CA 92506 Refunded first orderMODEL AIRCRAFT CO714 687-3836 J Lines drawn pencil make location rivet rows Short intersecting lines mark location rivet certain true spacing alignment time-consuming part rivet-making job Applying droplets glue amazingly quick operation Spill small pool glue plastic metal plate Dip round toothpick pool transfer adhering drop airplane setting carefully line intersection rivet shape isnt satisfactory can wiped clean Size rivet head can controlled cutting toothpick end form larger-diameter applicator system rivets can formed rate two seconds tedious task worth effort Flush-type rivets can depicted twirling sharpened brass tube over pencil line intersections leave circular indentation Brush-painting over meticu lously-applied detail may tend spoil effect Spraying color lightly minimum buildup paint will preserve detail Bob Dolly Wischer S-221 Lapham Peak Rd Delafield WI S3018 Models Thought framework quite obscure Needs covering thats fine effect cure Lou Roberts RC Soaring/Pruss Continued page 51 channel flying field crowd ed Thirty-minute flights further reduced Power/Soaring compatibility car pools church picnics some trade shows Judging some newsletters come way again might harmony between two groupsif can stand noise unadulterated muf fled flying fields giving way highrises highways hybrid crops teamingup might means survival Surely addition new frequencies makes manageable However still might have trouble LSF Level V two-hour duration flight Sunday afternoon Last September scribe witness Soaring meet teaming-up way fly lasted two whole days because national contest Im referring aero-towing event An event like powered planes tow Sailplanes altitude re lease Although has tried USA quite successfully experimental basis sport level least two countries France Germany quite popular event Munich Germany last September event featured Scale powered aircraft Continued page 148 April 1985 145 MODEL KITS INCLUDE Complete fiberglass construction Ducted fan units Hardware Optional retracts Rossi-Picco OS engines Factory-Direct Pricing SR 71-S/S 1/12 Scale 2-80 Engines $46400 Lear Jet 1/6 Scale 280 Engines $39500 S-3A Viking 1/12 Scale 2-45 Engines $28800
Edition: Model Aviation - 1985/04
Page Numbers: 48, 49, 144, 145
Radio Control Scale Bob & Dolly Wischer REPORT FROM PARIS definite reaction consequences com plexity bonus system now has done what originally intended past simple aircraft desirable model subjects because could detailed finished minimum effort also reasonable assurance model would fly well scalelike manner bonus system instituted give models complex aircraft sup posedly equal chance become contest winners Recent experience indicates complex multi-engine multi-func tion airplanes now have equal chance exclusion simpler designs balance between types has shifted too drastically other words modelers choice aircraft built now influenced favor complexity again obligated build model suits rules rather airplane really prefers long-time ideal aircraft models should have equal chance competition success remains illusion future can expect size bonuses will reviewed particu larly regard number engines landing gear retraction decisions present airplane build shouldnt unduly influenced foregoing FAT rules frozen un til January 1989 plenty time construct models capble taking advan tage bonuses available original intent compensate models com plex prototypes inherent disadvan tages flight example fourengined model given 20% bonus add ed its flight score reality fourengine model can lose engine during flight yet continue almost undis turbed twin-engined model having 10% bonus may dire difficul ty engine quits us have built flown twins well aware flaw imbalance bonuses evident However agreed some twins susceptible yaw snaproll problems flown engine Catalina flying boat Bob Under woods Alcor come mind being excep tionally stable flown engine throttled Both have built-in advantage having engines mounted near aircraft centerline distant future January 1989 complexity bonus 10% will awarded flight scores single ducted fans 20% twins Landing gear retraction another item may subject reduction bonus argued modern landing gear mechanisms models have become reliable 10% bonus too generous modelers have con structed own mechanisms certainly deserve full 10% should probably given award basis craftsmanship rather award flight disadvantage Countering expected proposal reduce 10% bonus 5% observations 1984 LeBourget World Championship point out winning airplanes gear retractable although should have third-place models retracts source serious shortcoming Apparently use commercial retract mechanisms no guarantee secure landings 10% bonus should therefore retained US proposal requested weight increase 7 kg 154 lbs accepted effective January 1 1989 increase tied three other items removal restrictions total surface area wing loading in48 Model Aviation Dave Nellie Navy Lockheed Hercules construcica mostiy foam hence its reason ably light 9 ibflies four 08 Max 10 FSR engines Span 80 finish acrylic lacquer over epoxy resin auto primer Hope puts scale props Jack Moores Great Lakes 2T1A Trainer rests Trexier air wheels scratchbuilt Wylam drawings MAN Metal panels made aiuminum bever age can Covering Sliron butyrate dope Craft 161/6-scale spans 54 weighs 9 lb Ray TInley built Rearwin Speedster RCM plans Powered Supertlgre 23 its superfinish K&B epoxyoverCoverite Classic ship spans 48 weighs 41/a lb crease two-stroke engine displacements match four-strokes wingloading specification has best chance being changed especially will ing accept moderate increase rather complete deletion Obtaining accep tance doubling two-stroke engine displacement may bit difficult although trend toward larger engines worldwide new proposal next years meeting should written individual item tied other changes increase total surface area com bined wing horizontal tail least likely gain acceptance since part general characteristics specifications FAI models case four-year wait until rules eligible change no great hurry action items AMA Sport Scale rules Proce dure Turn maneuver performed conjunction Straight Flight maneuver Under changed FAI rules effective immediately clarification Procedure Turn must now per formed directly front judges same position Figure Eight always done turn manner exact positioning never spelled out rules Static judging will done minimum distance meter 39 nearest part model method used US FAI events Europe measured distance models center NASA The National Association Scale Aeromodelers voice Scale US John Guenther NASA will conducting team selection trials year preparation next World Championships Control Line RC Scale Championships will held Norway probably June 1986 become active Scale organization join NASA sending $6 John Guenther RR #1 Box 715 Borden IN 47106 Scale data source booklet offering list Scale data sources mostly England has compiled Michael Smith 68 Armoury Drive Gravesend Kent DA12 lNB England Its price $2 postpaid list includes three-view sources bookshops libraries associa tions photo sources periodicals have experience using some sources listed obtain photos British French aircraft Three-view drawiags latest Historical Aviation Album has three-view drawings photos informational data Continued vase 144 Larry Pierce brought /4-scale Miles HawK L w xne l%ltcnenerWaterloo Scaie Rally Quadra 35cc files 21 -lb craft Finish poly urethane paint over polyester resin silkspan paper Wait Mouchas latest project Citabria Aerobatic Pro R Power 05 90 4-stroke Span 781/2 weight 11 lb Wait says files like dreamalready has plans larger -scale version 1 2-ft span BALSA SHEETS36 1/16233 3132 240 1/B 242 3/16248 1/4 256 1/32337 1/20337 1/163374931 3/323445837 1/8 35471 3/1636282 1/4 3730561 5/16385 3/B 38912471 1/2 3110155 3/4 3165 1/164587648 3/324709456 1/8 48010666 3/1649312275 1/4 411013464 3/8 225 1/2 4225261 MATCHED SHEETS42 3/324140 1/84108 3/164120 1/44131 BALSA ST/CKS 1/16 1/4 1/16 3/8 1/16 1/2 3/32 1/4 3/32 3/8 3/32 1/2 1/B 1/8 1/8 1/4 1/9 3/8 18 1/2 3/163/16 3/16 3/8 3/16 1/2 1/4 1/4 1/4 3/8 1/4 1/2 1/4 3/4 1/41 5/165/16 3/8 3/8 3/8 1/2 3/8 3/4 3/81 12 1/2 1/2 3/4 1/21 5/8 5/8 3/4 3/4 36 89 10 14 10 12 16 08 11 1218 18 11 17 22 16 18 21 34 40 2128 27 32 4255 52 36 4662 58 48 87 BALSA HOT LINE Call 806 745-6394 lOam 6 pm Central lime LONE STAR MODELS 1623 57th St Lubbock TX 79412 BALSATRIANGLES36 141/425 3/83/830 121/234 3/43/445 1155 BALSA PLANKS36 1185 12150 13200 14280 11/23275 11/24360 22225 23325 24435 33488 34668 TAPERED SHEETS36 1/4265 1/4385 3/8268 3/8398 1/23120 LONE STAR EPOXY 9,L/1.895 555598 15,/598 30 rein598 49 49 49 58 67 78 85 115 139 220 300 78 91 100 117 138 207 282 TRA/LING EDGE36 1/4132 5/161 1/435 3/81 1/246 1/2270 NOTANT GLUE 1 k298 1 z Thi298 2, Thick555 2 Thi555 BASSWOOD 3/183/16 3/161/4 3/16 3/8 3/161/2 3/16 3/4 1/4 1/4 1/43/8 1/4 3/4 3/8 3/B 3/8 1/2 3/8 3/4 1/21/2 1/23/4 26 30 3B 49 60 42 49 80 60 70 90 90 155 BUNDLE DEALS 201/6336885 201/164361020 203/32 336945 103/32436955 151/8336715 101/8436875 153/18336955 103/18438810 101/4336630 101/4436890 103/8 336850 03/8436625 01/2336540 51/2 438855 103/32448845 01/8449485 53/18448585 51/4448625 PINE STICKS 1/B cl/B 1/81/4 1/63/B 3/18316 3/16 3/B 3/16 1/2 1/41/4 1/4 3/8 1/41/2 3/B 3/B 36 4B 13 1623 20 1724 2332 30 2637 3042 3447 3752 SPRUCE STICKS 36 48 1/B 1/815 1/8 1/41624 1/8 3/620 3/163/162534 1/4 1/43145 1/4 3/83650 3/B 3/84563 3/8 1/25570 1/2 1/26080 1/2 3/468 89 SPRUCE TR/ANGLE 36 3/8 3/8 45 1/21/261 3/43/477 1/88 1/812 L/TE PLY 49 155 300 HARD MAPLE 18 1/4 3/8 3/8 3/8 3/81/2 3/8 3/4 1/23/4 B/RCH DOWELS36 1/859 3/1811 1/414 5/1625 3/B32 3 PLY BIRCH 49 16412525 1/3212425 1/1612435 1/812480 PLY 8/RCH 48 3/3212570 1/812585 3/1812585 1/412680 GROOVED LG MOUNTS 12 inch, 3/63/4/1/8/ 40 3/8c3/4/5/32/ 40 1/23/4/3/16/ 45 April 1985 49 WE ARE SHOOTING DOW N HIGH BALSA PRICES WITH SUPER QUALITY Satisfaction Guaranteed Direct Only 49 3848 CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% serious modeler want performance must try 4-6 lb balsa 40 LIGHT 46 L8 3645 1/32350 1/20358 1/1636B 3/323 1/83 3/163 1/43 3/83 1/23 3/43 13 1/184 3/324 1/84 3/164 1/44 3/84 1/24 Handling Charge$300 pay UPS Add $200 COD $300 extra PP APO FPO '" ~ -I checks COD 4-1/8% 18/n Te, US curcency M/immOrderS1000 Model Magic Epoxy Plus 2 Part 8 Mm Use anywhere two part epoxy used 25% Lighter Sandable Carveable Excellent Gap Filling Non-Sagging Superior Strength Sands Carves like Basswood! Sf1 ozl Equal over 8 wt oz regular epoxys See dealer first write call Model Magic Filler 0 0 S 0 W4PO Box 19784 St Paul MN 551190 715425-13970 MODEL MAGIC PRODUCTS Comparison Chart Model Magic Product X Adhesion BalsaExcellent Foam Fiberglass Strength Flexing Spreading Fuel ResistanceGood Sanding Ax med balsa Hardness Ax hard balsa FinishingAny finishicovering Shelf Life used up Tint AcceptanceExcellent water ResistExcellent Text methods data available request care enough fill very best very Poorinsist Model Magic Filler Circus Magic Filler Soft balsa Soft balsa 5-7 mo very Poor Eglin Aero Modelers know hard practiced prepare contest often practiced too dark fly comfortably fact often arrived just packing up leave Great job Steve Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Scale/Wischers Continued page 49 Standard J-l Fairchild FC-1 FC-2 FC-2W Consolidated-Vultee Catalina PRY-SA Cessna T-50 Bobcat new book contains 14 drawing sheets 195 photos Well-known modelers contributed books contents George Clapp Nats contestant countrys expert Fairchild air planes Col John deVries writer Scale column RCM magazine Paul Matt has published Album series volume 17 $10 postpaid Historical Aviation Album PO Box 33 Temple City CA 91780 Also available time writing limited supply back issues Album Send SASE above address list 114 enlarged three-view drawings published Album elsewhere Paul Matt have built five models using drawings contained Albums over period 18 years Metal-like finish Duplicating surface texture detail metal prototype challenge Scale modelers current World Champion David Masterton covered deHavilland Drover Trimotor 0035 aluminum alloy sheet metal specially rolled thickness hardness would permit handling damage Underneath alumi num skin standard balsa wood airplane individual piece alumi num embossed reverse side indentations form simulated rivets parts contactcemented balsa structure after forming fit shape model painted several other models LeBourget finished metal over balsa complete ly all-metal miniature copy French Cricket Very few modelers have necessary skill tools required produce such masterpiece metal Most us would search another method simulate metal-clad airplane Requests infor mation subject never seem end letters verbally though described system column about five years ago No doubt other methods possibly better repeated elaborations models structure given usual treatment sandpaper Glue joints stand above surrounding surfaces must taken down carefully using sanding block avoid removing balsa adjacent joint Any such ridge high point will plainly visible finished surface removed initially pronounced ridges strip-planked fuselage Cyanoacrylate CyA glues will harden balsa near joint joints arent really difficult sand smooth using block back up sandpaper trick sand joint avoid pressure softer balsa side Fiberglass cloth 3/ ounce per square yard lighter base material simulated metal finish impregnated polyester finishing resin such Sig K&B Heavier resin used boat building auto body repair too heavy purpose difficult sand adds unncessary weight Polyester resin will harden over doped surface should used over bare balsa glass cloth cut size slightly larger area covered fuselage can usually covered two pieces side small overlap along top bottom centerlines cloth follows compound curves nose tail very easily laid dry over balsa resin applied through cloth stiff-bristled brush Stiff bristles help move resin along thin layer laid down An expensive tinners acid flux brush ideal NI STARTER revolutionary concep model engines uxed boats cars airplanes NI STARTERITMI uses HeadiockiTMi adapter locks onto glow plugs start engine Fits pocket comes CI1O charger has LED lights up charging Rechargeable hundreds times gives over 50 consecutive starts recharging Available charger Send ad along prepayment receive free shipping handling $2495 Charger NI-STARTER $2495 charger ii iov 220V 1 2V fast chargeri NI-STARTER $1595 charger Chargers$1295 charger ii iov 220v 12V fast chargeri PLEASE SPECIFY WHICH CHARGER WHEN ORDERING 12421 RANSOM DRIVE GLENN DALE MD 20769301 464-2260 L Super sport flier turnaround pattern Balsa & ply construcelon 70 span 927 sq area 139w 7A -8A lbs 75-12culn Dealer Inquiry Invited Cleveland Ave SW Canfon OH 44707 Send $1 Catalog 846810 ROUSH MFG 144 Model Aviation $595 Sf1 ozi Fillets Filling Repair RA MFG OF NI-STAITEE purpose can discarded resin hardens too quickly before can cleaned dope thinner acetone large quantities resin mixed hardener may begin set before can completely used Smaller amounts ounce time easily managed stopping middle cloth piece presents no problem Clean brush thinner mix fresh one-ounce batch continue After area covered resin excess can removed absorbent tissue process aids pressing cloth close contact balsa Once resin begins set up its too late using tissue new sharp razor blade cuts away excess cloth along edge can done just before resin has gelled Fumes resin can hazardous health Keep room ventilated Resin hardener methyl ethyl ketone peroxide can cause blindness Protect eyes second coat resin may neded exposed filaments glass visible surface second coat should added sparingly stretching brushful its limit Resin weight mixing cup same amount model no evaporation solvents light sanding between coats silicon carbide No 180 sandpaper will remove small high spots Avoid sanding down glass because its thickness very small point weave glass cloth remains visible filler required fill weave can popular fillers easy sand since weighty material will removed K&B Primer Ditzler No 32 Primer suitable examples can sprayed brushed Sanding first 180-grit silicon carbide paper will remove excess primer care must taken step sand down cloth final polish 320-grit silicon carbide paper will remove small scratches coarse sanding give surface smooth metal-like finish amount sanding has effect models weight because primers quite heavy compared reasonably light cloth resin underneath Panel lines rivets model will lift out ordinary class Lines produced means masking tape layer tape average depth two heavy panel lines Unthinned primer brushed along edge tape dry primer sanded down sur face feathered adjacent area Remove tape panel line appears curved lines edges fillets exam ple use vinyl electrical tape lines intersect sanding operation must done care avoid removing exist ing line No single finishing operation can realistic surface application panel lines Round-head rivets can simulated droplets Wilhold R/C-56 glue Woin Jet Age Air Force 1@ Ih I I I Jet Age Ducted Fans 5 6 units featuring blade tip seals suspension mountings Jet Age fan future Lear Jet Length 94 Width 76 Weight 18 lbs SR-71 Length 107 Width 54 Weight 22 lbs S3A ng Length 54 Width 68 Weight 12 ib I I I I ii Send $200 A5428 Bushneii COMPLETE BROCHUREI UIRiverside CA 92506 Refunded first orderMODEL AIRCRAFT CO714 687-3836 J Lines drawn pencil make location rivet rows Short intersecting lines mark location rivet certain true spacing alignment time-consuming part rivet-making job Applying droplets glue amazingly quick operation Spill small pool glue plastic metal plate Dip round toothpick pool transfer adhering drop airplane setting carefully line intersection rivet shape isnt satisfactory can wiped clean Size rivet head can controlled cutting toothpick end form larger-diameter applicator system rivets can formed rate two seconds tedious task worth effort Flush-type rivets can depicted twirling sharpened brass tube over pencil line intersections leave circular indentation Brush-painting over meticu lously-applied detail may tend spoil effect Spraying color lightly minimum buildup paint will preserve detail Bob Dolly Wischer S-221 Lapham Peak Rd Delafield WI S3018 Models Thought framework quite obscure Needs covering thats fine effect cure Lou Roberts RC Soaring/Pruss Continued page 51 channel flying field crowd ed Thirty-minute flights further reduced Power/Soaring compatibility car pools church picnics some trade shows Judging some newsletters come way again might harmony between two groupsif can stand noise unadulterated muf fled flying fields giving way highrises highways hybrid crops teamingup might means survival Surely addition new frequencies makes manageable However still might have trouble LSF Level V two-hour duration flight Sunday afternoon Last September scribe witness Soaring meet teaming-up way fly lasted two whole days because national contest Im referring aero-towing event An event like powered planes tow Sailplanes altitude re lease Although has tried USA quite successfully experimental basis sport level least two countries France Germany quite popular event Munich Germany last September event featured Scale powered aircraft Continued page 148 April 1985 145 MODEL KITS INCLUDE Complete fiberglass construction Ducted fan units Hardware Optional retracts Rossi-Picco OS engines Factory-Direct Pricing SR 71-S/S 1/12 Scale 2-80 Engines $46400 Lear Jet 1/6 Scale 280 Engines $39500 S-3A Viking 1/12 Scale 2-45 Engines $28800
Edition: Model Aviation - 1985/04
Page Numbers: 48, 49, 144, 145
Radio Control Scale Bob & Dolly Wischer REPORT FROM PARIS definite reaction consequences com plexity bonus system now has done what originally intended past simple aircraft desirable model subjects because could detailed finished minimum effort also reasonable assurance model would fly well scalelike manner bonus system instituted give models complex aircraft sup posedly equal chance become contest winners Recent experience indicates complex multi-engine multi-func tion airplanes now have equal chance exclusion simpler designs balance between types has shifted too drastically other words modelers choice aircraft built now influenced favor complexity again obligated build model suits rules rather airplane really prefers long-time ideal aircraft models should have equal chance competition success remains illusion future can expect size bonuses will reviewed particu larly regard number engines landing gear retraction decisions present airplane build shouldnt unduly influenced foregoing FAT rules frozen un til January 1989 plenty time construct models capble taking advan tage bonuses available original intent compensate models com plex prototypes inherent disadvan tages flight example fourengined model given 20% bonus add ed its flight score reality fourengine model can lose engine during flight yet continue almost undis turbed twin-engined model having 10% bonus may dire difficul ty engine quits us have built flown twins well aware flaw imbalance bonuses evident However agreed some twins susceptible yaw snaproll problems flown engine Catalina flying boat Bob Under woods Alcor come mind being excep tionally stable flown engine throttled Both have built-in advantage having engines mounted near aircraft centerline distant future January 1989 complexity bonus 10% will awarded flight scores single ducted fans 20% twins Landing gear retraction another item may subject reduction bonus argued modern landing gear mechanisms models have become reliable 10% bonus too generous modelers have con structed own mechanisms certainly deserve full 10% should probably given award basis craftsmanship rather award flight disadvantage Countering expected proposal reduce 10% bonus 5% observations 1984 LeBourget World Championship point out winning airplanes gear retractable although should have third-place models retracts source serious shortcoming Apparently use commercial retract mechanisms no guarantee secure landings 10% bonus should therefore retained US proposal requested weight increase 7 kg 154 lbs accepted effective January 1 1989 increase tied three other items removal restrictions total surface area wing loading in48 Model Aviation Dave Nellie Navy Lockheed Hercules construcica mostiy foam hence its reason ably light 9 ibflies four 08 Max 10 FSR engines Span 80 finish acrylic lacquer over epoxy resin auto primer Hope puts scale props Jack Moores Great Lakes 2T1A Trainer rests Trexier air wheels scratchbuilt Wylam drawings MAN Metal panels made aiuminum bever age can Covering Sliron butyrate dope Craft 161/6-scale spans 54 weighs 9 lb Ray TInley built Rearwin Speedster RCM plans Powered Supertlgre 23 its superfinish K&B epoxyoverCoverite Classic ship spans 48 weighs 41/a lb crease two-stroke engine displacements match four-strokes wingloading specification has best chance being changed especially will ing accept moderate increase rather complete deletion Obtaining accep tance doubling two-stroke engine displacement may bit difficult although trend toward larger engines worldwide new proposal next years meeting should written individual item tied other changes increase total surface area com bined wing horizontal tail least likely gain acceptance since part general characteristics specifications FAI models case four-year wait until rules eligible change no great hurry action items AMA Sport Scale rules Proce dure Turn maneuver performed conjunction Straight Flight maneuver Under changed FAI rules effective immediately clarification Procedure Turn must now per formed directly front judges same position Figure Eight always done turn manner exact positioning never spelled out rules Static judging will done minimum distance meter 39 nearest part model method used US FAI events Europe measured distance models center NASA The National Association Scale Aeromodelers voice Scale US John Guenther NASA will conducting team selection trials year preparation next World Championships Control Line RC Scale Championships will held Norway probably June 1986 become active Scale organization join NASA sending $6 John Guenther RR #1 Box 715 Borden IN 47106 Scale data source booklet offering list Scale data sources mostly England has compiled Michael Smith 68 Armoury Drive Gravesend Kent DA12 lNB England Its price $2 postpaid list includes three-view sources bookshops libraries associa tions photo sources periodicals have experience using some sources listed obtain photos British French aircraft Three-view drawiags latest Historical Aviation Album has three-view drawings photos informational data Continued vase 144 Larry Pierce brought /4-scale Miles HawK L w xne l%ltcnenerWaterloo Scaie Rally Quadra 35cc files 21 -lb craft Finish poly urethane paint over polyester resin silkspan paper Wait Mouchas latest project Citabria Aerobatic Pro R Power 05 90 4-stroke Span 781/2 weight 11 lb Wait says files like dreamalready has plans larger -scale version 1 2-ft span BALSA SHEETS36 1/16233 3132 240 1/B 242 3/16248 1/4 256 1/32337 1/20337 1/163374931 3/323445837 1/8 35471 3/1636282 1/4 3730561 5/16385 3/B 38912471 1/2 3110155 3/4 3165 1/164587648 3/324709456 1/8 48010666 3/1649312275 1/4 411013464 3/8 225 1/2 4225261 MATCHED SHEETS42 3/324140 1/84108 3/164120 1/44131 BALSA ST/CKS 1/16 1/4 1/16 3/8 1/16 1/2 3/32 1/4 3/32 3/8 3/32 1/2 1/B 1/8 1/8 1/4 1/9 3/8 18 1/2 3/163/16 3/16 3/8 3/16 1/2 1/4 1/4 1/4 3/8 1/4 1/2 1/4 3/4 1/41 5/165/16 3/8 3/8 3/8 1/2 3/8 3/4 3/81 12 1/2 1/2 3/4 1/21 5/8 5/8 3/4 3/4 36 89 10 14 10 12 16 08 11 1218 18 11 17 22 16 18 21 34 40 2128 27 32 4255 52 36 4662 58 48 87 BALSA HOT LINE Call 806 745-6394 lOam 6 pm Central lime LONE STAR MODELS 1623 57th St Lubbock TX 79412 BALSATRIANGLES36 141/425 3/83/830 121/234 3/43/445 1155 BALSA PLANKS36 1185 12150 13200 14280 11/23275 11/24360 22225 23325 24435 33488 34668 TAPERED SHEETS36 1/4265 1/4385 3/8268 3/8398 1/23120 LONE STAR EPOXY 9,L/1.895 555598 15,/598 30 rein598 49 49 49 58 67 78 85 115 139 220 300 78 91 100 117 138 207 282 TRA/LING EDGE36 1/4132 5/161 1/435 3/81 1/246 1/2270 NOTANT GLUE 1 k298 1 z Thi298 2, Thick555 2 Thi555 BASSWOOD 3/183/16 3/161/4 3/16 3/8 3/161/2 3/16 3/4 1/4 1/4 1/43/8 1/4 3/4 3/8 3/B 3/8 1/2 3/8 3/4 1/21/2 1/23/4 26 30 3B 49 60 42 49 80 60 70 90 90 155 BUNDLE DEALS 201/6336885 201/164361020 203/32 336945 103/32436955 151/8336715 101/8436875 153/18336955 103/18438810 101/4336630 101/4436890 103/8 336850 03/8436625 01/2336540 51/2 438855 103/32448845 01/8449485 53/18448585 51/4448625 PINE STICKS 1/B cl/B 1/81/4 1/63/B 3/18316 3/16 3/B 3/16 1/2 1/41/4 1/4 3/8 1/41/2 3/B 3/B 36 4B 13 1623 20 1724 2332 30 2637 3042 3447 3752 SPRUCE STICKS 36 48 1/B 1/815 1/8 1/41624 1/8 3/620 3/163/162534 1/4 1/43145 1/4 3/83650 3/B 3/84563 3/8 1/25570 1/2 1/26080 1/2 3/468 89 SPRUCE TR/ANGLE 36 3/8 3/8 45 1/21/261 3/43/477 1/88 1/812 L/TE PLY 49 155 300 HARD MAPLE 18 1/4 3/8 3/8 3/8 3/81/2 3/8 3/4 1/23/4 B/RCH DOWELS36 1/859 3/1811 1/414 5/1625 3/B32 3 PLY BIRCH 49 16412525 1/3212425 1/1612435 1/812480 PLY 8/RCH 48 3/3212570 1/812585 3/1812585 1/412680 GROOVED LG MOUNTS 12 inch, 3/63/4/1/8/ 40 3/8c3/4/5/32/ 40 1/23/4/3/16/ 45 April 1985 49 WE ARE SHOOTING DOW N HIGH BALSA PRICES WITH SUPER QUALITY Satisfaction Guaranteed Direct Only 49 3848 CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% serious modeler want performance must try 4-6 lb balsa 40 LIGHT 46 L8 3645 1/32350 1/20358 1/1636B 3/323 1/83 3/163 1/43 3/83 1/23 3/43 13 1/184 3/324 1/84 3/164 1/44 3/84 1/24 Handling Charge$300 pay UPS Add $200 COD $300 extra PP APO FPO '" ~ -I checks COD 4-1/8% 18/n Te, US curcency M/immOrderS1000 Model Magic Epoxy Plus 2 Part 8 Mm Use anywhere two part epoxy used 25% Lighter Sandable Carveable Excellent Gap Filling Non-Sagging Superior Strength Sands Carves like Basswood! Sf1 ozl Equal over 8 wt oz regular epoxys See dealer first write call Model Magic Filler 0 0 S 0 W4PO Box 19784 St Paul MN 551190 715425-13970 MODEL MAGIC PRODUCTS Comparison Chart Model Magic Product X Adhesion BalsaExcellent Foam Fiberglass Strength Flexing Spreading Fuel ResistanceGood Sanding Ax med balsa Hardness Ax hard balsa FinishingAny finishicovering Shelf Life used up Tint AcceptanceExcellent water ResistExcellent Text methods data available request care enough fill very best very Poorinsist Model Magic Filler Circus Magic Filler Soft balsa Soft balsa 5-7 mo very Poor Eglin Aero Modelers know hard practiced prepare contest often practiced too dark fly comfortably fact often arrived just packing up leave Great job Steve Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Scale/Wischers Continued page 49 Standard J-l Fairchild FC-1 FC-2 FC-2W Consolidated-Vultee Catalina PRY-SA Cessna T-50 Bobcat new book contains 14 drawing sheets 195 photos Well-known modelers contributed books contents George Clapp Nats contestant countrys expert Fairchild air planes Col John deVries writer Scale column RCM magazine Paul Matt has published Album series volume 17 $10 postpaid Historical Aviation Album PO Box 33 Temple City CA 91780 Also available time writing limited supply back issues Album Send SASE above address list 114 enlarged three-view drawings published Album elsewhere Paul Matt have built five models using drawings contained Albums over period 18 years Metal-like finish Duplicating surface texture detail metal prototype challenge Scale modelers current World Champion David Masterton covered deHavilland Drover Trimotor 0035 aluminum alloy sheet metal specially rolled thickness hardness would permit handling damage Underneath alumi num skin standard balsa wood airplane individual piece alumi num embossed reverse side indentations form simulated rivets parts contactcemented balsa structure after forming fit shape model painted several other models LeBourget finished metal over balsa complete ly all-metal miniature copy French Cricket Very few modelers have necessary skill tools required produce such masterpiece metal Most us would search another method simulate metal-clad airplane Requests infor mation subject never seem end letters verbally though described system column about five years ago No doubt other methods possibly better repeated elaborations models structure given usual treatment sandpaper Glue joints stand above surrounding surfaces must taken down carefully using sanding block avoid removing balsa adjacent joint Any such ridge high point will plainly visible finished surface removed initially pronounced ridges strip-planked fuselage Cyanoacrylate CyA glues will harden balsa near joint joints arent really difficult sand smooth using block back up sandpaper trick sand joint avoid pressure softer balsa side Fiberglass cloth 3/ ounce per square yard lighter base material simulated metal finish impregnated polyester finishing resin such Sig K&B Heavier resin used boat building auto body repair too heavy purpose difficult sand adds unncessary weight Polyester resin will harden over doped surface should used over bare balsa glass cloth cut size slightly larger area covered fuselage can usually covered two pieces side small overlap along top bottom centerlines cloth follows compound curves nose tail very easily laid dry over balsa resin applied through cloth stiff-bristled brush Stiff bristles help move resin along thin layer laid down An expensive tinners acid flux brush ideal NI STARTER revolutionary concep model engines uxed boats cars airplanes NI STARTERITMI uses HeadiockiTMi adapter locks onto glow plugs start engine Fits pocket comes CI1O charger has LED lights up charging Rechargeable hundreds times gives over 50 consecutive starts recharging Available charger Send ad along prepayment receive free shipping handling $2495 Charger NI-STARTER $2495 charger ii iov 220V 1 2V fast chargeri NI-STARTER $1595 charger Chargers$1295 charger ii iov 220v 12V fast chargeri PLEASE SPECIFY WHICH CHARGER WHEN ORDERING 12421 RANSOM DRIVE GLENN DALE MD 20769301 464-2260 L Super sport flier turnaround pattern Balsa & ply construcelon 70 span 927 sq area 139w 7A -8A lbs 75-12culn Dealer Inquiry Invited Cleveland Ave SW Canfon OH 44707 Send $1 Catalog 846810 ROUSH MFG 144 Model Aviation $595 Sf1 ozi Fillets Filling Repair RA MFG OF NI-STAITEE purpose can discarded resin hardens too quickly before can cleaned dope thinner acetone large quantities resin mixed hardener may begin set before can completely used Smaller amounts ounce time easily managed stopping middle cloth piece presents no problem Clean brush thinner mix fresh one-ounce batch continue After area covered resin excess can removed absorbent tissue process aids pressing cloth close contact balsa Once resin begins set up its too late using tissue new sharp razor blade cuts away excess cloth along edge can done just before resin has gelled Fumes resin can hazardous health Keep room ventilated Resin hardener methyl ethyl ketone peroxide can cause blindness Protect eyes second coat resin may neded exposed filaments glass visible surface second coat should added sparingly stretching brushful its limit Resin weight mixing cup same amount model no evaporation solvents light sanding between coats silicon carbide No 180 sandpaper will remove small high spots Avoid sanding down glass because its thickness very small point weave glass cloth remains visible filler required fill weave can popular fillers easy sand since weighty material will removed K&B Primer Ditzler No 32 Primer suitable examples can sprayed brushed Sanding first 180-grit silicon carbide paper will remove excess primer care must taken step sand down cloth final polish 320-grit silicon carbide paper will remove small scratches coarse sanding give surface smooth metal-like finish amount sanding has effect models weight because primers quite heavy compared reasonably light cloth resin underneath Panel lines rivets model will lift out ordinary class Lines produced means masking tape layer tape average depth two heavy panel lines Unthinned primer brushed along edge tape dry primer sanded down sur face feathered adjacent area Remove tape panel line appears curved lines edges fillets exam ple use vinyl electrical tape lines intersect sanding operation must done care avoid removing exist ing line No single finishing operation can realistic surface application panel lines Round-head rivets can simulated droplets Wilhold R/C-56 glue Woin Jet Age Air Force 1@ Ih I I I Jet Age Ducted Fans 5 6 units featuring blade tip seals suspension mountings Jet Age fan future Lear Jet Length 94 Width 76 Weight 18 lbs SR-71 Length 107 Width 54 Weight 22 lbs S3A ng Length 54 Width 68 Weight 12 ib I I I I ii Send $200 A5428 Bushneii COMPLETE BROCHUREI UIRiverside CA 92506 Refunded first orderMODEL AIRCRAFT CO714 687-3836 J Lines drawn pencil make location rivet rows Short intersecting lines mark location rivet certain true spacing alignment time-consuming part rivet-making job Applying droplets glue amazingly quick operation Spill small pool glue plastic metal plate Dip round toothpick pool transfer adhering drop airplane setting carefully line intersection rivet shape isnt satisfactory can wiped clean Size rivet head can controlled cutting toothpick end form larger-diameter applicator system rivets can formed rate two seconds tedious task worth effort Flush-type rivets can depicted twirling sharpened brass tube over pencil line intersections leave circular indentation Brush-painting over meticu lously-applied detail may tend spoil effect Spraying color lightly minimum buildup paint will preserve detail Bob Dolly Wischer S-221 Lapham Peak Rd Delafield WI S3018 Models Thought framework quite obscure Needs covering thats fine effect cure Lou Roberts RC Soaring/Pruss Continued page 51 channel flying field crowd ed Thirty-minute flights further reduced Power/Soaring compatibility car pools church picnics some trade shows Judging some newsletters come way again might harmony between two groupsif can stand noise unadulterated muf fled flying fields giving way highrises highways hybrid crops teamingup might means survival Surely addition new frequencies makes manageable However still might have trouble LSF Level V two-hour duration flight Sunday afternoon Last September scribe witness Soaring meet teaming-up way fly lasted two whole days because national contest Im referring aero-towing event An event like powered planes tow Sailplanes altitude re lease Although has tried USA quite successfully experimental basis sport level least two countries France Germany quite popular event Munich Germany last September event featured Scale powered aircraft Continued page 148 April 1985 145 MODEL KITS INCLUDE Complete fiberglass construction Ducted fan units Hardware Optional retracts Rossi-Picco OS engines Factory-Direct Pricing SR 71-S/S 1/12 Scale 2-80 Engines $46400 Lear Jet 1/6 Scale 280 Engines $39500 S-3A Viking 1/12 Scale 2-45 Engines $28800
Edition: Model Aviation - 1985/04
Page Numbers: 48, 49, 144, 145
Radio Control Scale Bob & Dolly Wischer REPORT FROM PARIS definite reaction consequences com plexity bonus system now has done what originally intended past simple aircraft desirable model subjects because could detailed finished minimum effort also reasonable assurance model would fly well scalelike manner bonus system instituted give models complex aircraft sup posedly equal chance become contest winners Recent experience indicates complex multi-engine multi-func tion airplanes now have equal chance exclusion simpler designs balance between types has shifted too drastically other words modelers choice aircraft built now influenced favor complexity again obligated build model suits rules rather airplane really prefers long-time ideal aircraft models should have equal chance competition success remains illusion future can expect size bonuses will reviewed particu larly regard number engines landing gear retraction decisions present airplane build shouldnt unduly influenced foregoing FAT rules frozen un til January 1989 plenty time construct models capble taking advan tage bonuses available original intent compensate models com plex prototypes inherent disadvan tages flight example fourengined model given 20% bonus add ed its flight score reality fourengine model can lose engine during flight yet continue almost undis turbed twin-engined model having 10% bonus may dire difficul ty engine quits us have built flown twins well aware flaw imbalance bonuses evident However agreed some twins susceptible yaw snaproll problems flown engine Catalina flying boat Bob Under woods Alcor come mind being excep tionally stable flown engine throttled Both have built-in advantage having engines mounted near aircraft centerline distant future January 1989 complexity bonus 10% will awarded flight scores single ducted fans 20% twins Landing gear retraction another item may subject reduction bonus argued modern landing gear mechanisms models have become reliable 10% bonus too generous modelers have con structed own mechanisms certainly deserve full 10% should probably given award basis craftsmanship rather award flight disadvantage Countering expected proposal reduce 10% bonus 5% observations 1984 LeBourget World Championship point out winning airplanes gear retractable although should have third-place models retracts source serious shortcoming Apparently use commercial retract mechanisms no guarantee secure landings 10% bonus should therefore retained US proposal requested weight increase 7 kg 154 lbs accepted effective January 1 1989 increase tied three other items removal restrictions total surface area wing loading in48 Model Aviation Dave Nellie Navy Lockheed Hercules construcica mostiy foam hence its reason ably light 9 ibflies four 08 Max 10 FSR engines Span 80 finish acrylic lacquer over epoxy resin auto primer Hope puts scale props Jack Moores Great Lakes 2T1A Trainer rests Trexier air wheels scratchbuilt Wylam drawings MAN Metal panels made aiuminum bever age can Covering Sliron butyrate dope Craft 161/6-scale spans 54 weighs 9 lb Ray TInley built Rearwin Speedster RCM plans Powered Supertlgre 23 its superfinish K&B epoxyoverCoverite Classic ship spans 48 weighs 41/a lb crease two-stroke engine displacements match four-strokes wingloading specification has best chance being changed especially will ing accept moderate increase rather complete deletion Obtaining accep tance doubling two-stroke engine displacement may bit difficult although trend toward larger engines worldwide new proposal next years meeting should written individual item tied other changes increase total surface area com bined wing horizontal tail least likely gain acceptance since part general characteristics specifications FAI models case four-year wait until rules eligible change no great hurry action items AMA Sport Scale rules Proce dure Turn maneuver performed conjunction Straight Flight maneuver Under changed FAI rules effective immediately clarification Procedure Turn must now per formed directly front judges same position Figure Eight always done turn manner exact positioning never spelled out rules Static judging will done minimum distance meter 39 nearest part model method used US FAI events Europe measured distance models center NASA The National Association Scale Aeromodelers voice Scale US John Guenther NASA will conducting team selection trials year preparation next World Championships Control Line RC Scale Championships will held Norway probably June 1986 become active Scale organization join NASA sending $6 John Guenther RR #1 Box 715 Borden IN 47106 Scale data source booklet offering list Scale data sources mostly England has compiled Michael Smith 68 Armoury Drive Gravesend Kent DA12 lNB England Its price $2 postpaid list includes three-view sources bookshops libraries associa tions photo sources periodicals have experience using some sources listed obtain photos British French aircraft Three-view drawiags latest Historical Aviation Album has three-view drawings photos informational data Continued vase 144 Larry Pierce brought /4-scale Miles HawK L w xne l%ltcnenerWaterloo Scaie Rally Quadra 35cc files 21 -lb craft Finish poly urethane paint over polyester resin silkspan paper Wait Mouchas latest project Citabria Aerobatic Pro R Power 05 90 4-stroke Span 781/2 weight 11 lb Wait says files like dreamalready has plans larger -scale version 1 2-ft span BALSA SHEETS36 1/16233 3132 240 1/B 242 3/16248 1/4 256 1/32337 1/20337 1/163374931 3/323445837 1/8 35471 3/1636282 1/4 3730561 5/16385 3/B 38912471 1/2 3110155 3/4 3165 1/164587648 3/324709456 1/8 48010666 3/1649312275 1/4 411013464 3/8 225 1/2 4225261 MATCHED SHEETS42 3/324140 1/84108 3/164120 1/44131 BALSA ST/CKS 1/16 1/4 1/16 3/8 1/16 1/2 3/32 1/4 3/32 3/8 3/32 1/2 1/B 1/8 1/8 1/4 1/9 3/8 18 1/2 3/163/16 3/16 3/8 3/16 1/2 1/4 1/4 1/4 3/8 1/4 1/2 1/4 3/4 1/41 5/165/16 3/8 3/8 3/8 1/2 3/8 3/4 3/81 12 1/2 1/2 3/4 1/21 5/8 5/8 3/4 3/4 36 89 10 14 10 12 16 08 11 1218 18 11 17 22 16 18 21 34 40 2128 27 32 4255 52 36 4662 58 48 87 BALSA HOT LINE Call 806 745-6394 lOam 6 pm Central lime LONE STAR MODELS 1623 57th St Lubbock TX 79412 BALSATRIANGLES36 141/425 3/83/830 121/234 3/43/445 1155 BALSA PLANKS36 1185 12150 13200 14280 11/23275 11/24360 22225 23325 24435 33488 34668 TAPERED SHEETS36 1/4265 1/4385 3/8268 3/8398 1/23120 LONE STAR EPOXY 9,L/1.895 555598 15,/598 30 rein598 49 49 49 58 67 78 85 115 139 220 300 78 91 100 117 138 207 282 TRA/LING EDGE36 1/4132 5/161 1/435 3/81 1/246 1/2270 NOTANT GLUE 1 k298 1 z Thi298 2, Thick555 2 Thi555 BASSWOOD 3/183/16 3/161/4 3/16 3/8 3/161/2 3/16 3/4 1/4 1/4 1/43/8 1/4 3/4 3/8 3/B 3/8 1/2 3/8 3/4 1/21/2 1/23/4 26 30 3B 49 60 42 49 80 60 70 90 90 155 BUNDLE DEALS 201/6336885 201/164361020 203/32 336945 103/32436955 151/8336715 101/8436875 153/18336955 103/18438810 101/4336630 101/4436890 103/8 336850 03/8436625 01/2336540 51/2 438855 103/32448845 01/8449485 53/18448585 51/4448625 PINE STICKS 1/B cl/B 1/81/4 1/63/B 3/18316 3/16 3/B 3/16 1/2 1/41/4 1/4 3/8 1/41/2 3/B 3/B 36 4B 13 1623 20 1724 2332 30 2637 3042 3447 3752 SPRUCE STICKS 36 48 1/B 1/815 1/8 1/41624 1/8 3/620 3/163/162534 1/4 1/43145 1/4 3/83650 3/B 3/84563 3/8 1/25570 1/2 1/26080 1/2 3/468 89 SPRUCE TR/ANGLE 36 3/8 3/8 45 1/21/261 3/43/477 1/88 1/812 L/TE PLY 49 155 300 HARD MAPLE 18 1/4 3/8 3/8 3/8 3/81/2 3/8 3/4 1/23/4 B/RCH DOWELS36 1/859 3/1811 1/414 5/1625 3/B32 3 PLY BIRCH 49 16412525 1/3212425 1/1612435 1/812480 PLY 8/RCH 48 3/3212570 1/812585 3/1812585 1/412680 GROOVED LG MOUNTS 12 inch, 3/63/4/1/8/ 40 3/8c3/4/5/32/ 40 1/23/4/3/16/ 45 April 1985 49 WE ARE SHOOTING DOW N HIGH BALSA PRICES WITH SUPER QUALITY Satisfaction Guaranteed Direct Only 49 3848 CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% serious modeler want performance must try 4-6 lb balsa 40 LIGHT 46 L8 3645 1/32350 1/20358 1/1636B 3/323 1/83 3/163 1/43 3/83 1/23 3/43 13 1/184 3/324 1/84 3/164 1/44 3/84 1/24 Handling Charge$300 pay UPS Add $200 COD $300 extra PP APO FPO '" ~ -I checks COD 4-1/8% 18/n Te, US curcency M/immOrderS1000 Model Magic Epoxy Plus 2 Part 8 Mm Use anywhere two part epoxy used 25% Lighter Sandable Carveable Excellent Gap Filling Non-Sagging Superior Strength Sands Carves like Basswood! Sf1 ozl Equal over 8 wt oz regular epoxys See dealer first write call Model Magic Filler 0 0 S 0 W4PO Box 19784 St Paul MN 551190 715425-13970 MODEL MAGIC PRODUCTS Comparison Chart Model Magic Product X Adhesion BalsaExcellent Foam Fiberglass Strength Flexing Spreading Fuel ResistanceGood Sanding Ax med balsa Hardness Ax hard balsa FinishingAny finishicovering Shelf Life used up Tint AcceptanceExcellent water ResistExcellent Text methods data available request care enough fill very best very Poorinsist Model Magic Filler Circus Magic Filler Soft balsa Soft balsa 5-7 mo very Poor Eglin Aero Modelers know hard practiced prepare contest often practiced too dark fly comfortably fact often arrived just packing up leave Great job Steve Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Scale/Wischers Continued page 49 Standard J-l Fairchild FC-1 FC-2 FC-2W Consolidated-Vultee Catalina PRY-SA Cessna T-50 Bobcat new book contains 14 drawing sheets 195 photos Well-known modelers contributed books contents George Clapp Nats contestant countrys expert Fairchild air planes Col John deVries writer Scale column RCM magazine Paul Matt has published Album series volume 17 $10 postpaid Historical Aviation Album PO Box 33 Temple City CA 91780 Also available time writing limited supply back issues Album Send SASE above address list 114 enlarged three-view drawings published Album elsewhere Paul Matt have built five models using drawings contained Albums over period 18 years Metal-like finish Duplicating surface texture detail metal prototype challenge Scale modelers current World Champion David Masterton covered deHavilland Drover Trimotor 0035 aluminum alloy sheet metal specially rolled thickness hardness would permit handling damage Underneath alumi num skin standard balsa wood airplane individual piece alumi num embossed reverse side indentations form simulated rivets parts contactcemented balsa structure after forming fit shape model painted several other models LeBourget finished metal over balsa complete ly all-metal miniature copy French Cricket Very few modelers have necessary skill tools required produce such masterpiece metal Most us would search another method simulate metal-clad airplane Requests infor mation subject never seem end letters verbally though described system column about five years ago No doubt other methods possibly better repeated elaborations models structure given usual treatment sandpaper Glue joints stand above surrounding surfaces must taken down carefully using sanding block avoid removing balsa adjacent joint Any such ridge high point will plainly visible finished surface removed initially pronounced ridges strip-planked fuselage Cyanoacrylate CyA glues will harden balsa near joint joints arent really difficult sand smooth using block back up sandpaper trick sand joint avoid pressure softer balsa side Fiberglass cloth 3/ ounce per square yard lighter base material simulated metal finish impregnated polyester finishing resin such Sig K&B Heavier resin used boat building auto body repair too heavy purpose difficult sand adds unncessary weight Polyester resin will harden over doped surface should used over bare balsa glass cloth cut size slightly larger area covered fuselage can usually covered two pieces side small overlap along top bottom centerlines cloth follows compound curves nose tail very easily laid dry over balsa resin applied through cloth stiff-bristled brush Stiff bristles help move resin along thin layer laid down An expensive tinners acid flux brush ideal NI STARTER revolutionary concep model engines uxed boats cars airplanes NI STARTERITMI uses HeadiockiTMi adapter locks onto glow plugs start engine Fits pocket comes CI1O charger has LED lights up charging Rechargeable hundreds times gives over 50 consecutive starts recharging Available charger Send ad along prepayment receive free shipping handling $2495 Charger NI-STARTER $2495 charger ii iov 220V 1 2V fast chargeri NI-STARTER $1595 charger Chargers$1295 charger ii iov 220v 12V fast chargeri PLEASE SPECIFY WHICH CHARGER WHEN ORDERING 12421 RANSOM DRIVE GLENN DALE MD 20769301 464-2260 L Super sport flier turnaround pattern Balsa & ply construcelon 70 span 927 sq area 139w 7A -8A lbs 75-12culn Dealer Inquiry Invited Cleveland Ave SW Canfon OH 44707 Send $1 Catalog 846810 ROUSH MFG 144 Model Aviation $595 Sf1 ozi Fillets Filling Repair RA MFG OF NI-STAITEE purpose can discarded resin hardens too quickly before can cleaned dope thinner acetone large quantities resin mixed hardener may begin set before can completely used Smaller amounts ounce time easily managed stopping middle cloth piece presents no problem Clean brush thinner mix fresh one-ounce batch continue After area covered resin excess can removed absorbent tissue process aids pressing cloth close contact balsa Once resin begins set up its too late using tissue new sharp razor blade cuts away excess cloth along edge can done just before resin has gelled Fumes resin can hazardous health Keep room ventilated Resin hardener methyl ethyl ketone peroxide can cause blindness Protect eyes second coat resin may neded exposed filaments glass visible surface second coat should added sparingly stretching brushful its limit Resin weight mixing cup same amount model no evaporation solvents light sanding between coats silicon carbide No 180 sandpaper will remove small high spots Avoid sanding down glass because its thickness very small point weave glass cloth remains visible filler required fill weave can popular fillers easy sand since weighty material will removed K&B Primer Ditzler No 32 Primer suitable examples can sprayed brushed Sanding first 180-grit silicon carbide paper will remove excess primer care must taken step sand down cloth final polish 320-grit silicon carbide paper will remove small scratches coarse sanding give surface smooth metal-like finish amount sanding has effect models weight because primers quite heavy compared reasonably light cloth resin underneath Panel lines rivets model will lift out ordinary class Lines produced means masking tape layer tape average depth two heavy panel lines Unthinned primer brushed along edge tape dry primer sanded down sur face feathered adjacent area Remove tape panel line appears curved lines edges fillets exam ple use vinyl electrical tape lines intersect sanding operation must done care avoid removing exist ing line No single finishing operation can realistic surface application panel lines Round-head rivets can simulated droplets Wilhold R/C-56 glue Woin Jet Age Air Force 1@ Ih I I I Jet Age Ducted Fans 5 6 units featuring blade tip seals suspension mountings Jet Age fan future Lear Jet Length 94 Width 76 Weight 18 lbs SR-71 Length 107 Width 54 Weight 22 lbs S3A ng Length 54 Width 68 Weight 12 ib I I I I ii Send $200 A5428 Bushneii COMPLETE BROCHUREI UIRiverside CA 92506 Refunded first orderMODEL AIRCRAFT CO714 687-3836 J Lines drawn pencil make location rivet rows Short intersecting lines mark location rivet certain true spacing alignment time-consuming part rivet-making job Applying droplets glue amazingly quick operation Spill small pool glue plastic metal plate Dip round toothpick pool transfer adhering drop airplane setting carefully line intersection rivet shape isnt satisfactory can wiped clean Size rivet head can controlled cutting toothpick end form larger-diameter applicator system rivets can formed rate two seconds tedious task worth effort Flush-type rivets can depicted twirling sharpened brass tube over pencil line intersections leave circular indentation Brush-painting over meticu lously-applied detail may tend spoil effect Spraying color lightly minimum buildup paint will preserve detail Bob Dolly Wischer S-221 Lapham Peak Rd Delafield WI S3018 Models Thought framework quite obscure Needs covering thats fine effect cure Lou Roberts RC Soaring/Pruss Continued page 51 channel flying field crowd ed Thirty-minute flights further reduced Power/Soaring compatibility car pools church picnics some trade shows Judging some newsletters come way again might harmony between two groupsif can stand noise unadulterated muf fled flying fields giving way highrises highways hybrid crops teamingup might means survival Surely addition new frequencies makes manageable However still might have trouble LSF Level V two-hour duration flight Sunday afternoon Last September scribe witness Soaring meet teaming-up way fly lasted two whole days because national contest Im referring aero-towing event An event like powered planes tow Sailplanes altitude re lease Although has tried USA quite successfully experimental basis sport level least two countries France Germany quite popular event Munich Germany last September event featured Scale powered aircraft Continued page 148 April 1985 145 MODEL KITS INCLUDE Complete fiberglass construction Ducted fan units Hardware Optional retracts Rossi-Picco OS engines Factory-Direct Pricing SR 71-S/S 1/12 Scale 2-80 Engines $46400 Lear Jet 1/6 Scale 280 Engines $39500 S-3A Viking 1/12 Scale 2-45 Engines $28800