EAA Model Show After observing years mall shows have found perfect environ ment model aircraft show March 20 1988 attended first annual EAA Air Ad venture Museum Model Aircraft Show Witt man Field Oshkosh WI event co sponsored FAA two local clubs Winne bago RC Fliers Valley Aero Modelers Show managers EAA Education Director Chuck Larsen Museum Director Carl Swick ley vast museum building due further en largement before next show has no space shortage Polished floors sparkling airplane displays accented models surrounded air craft wide variety Wright Flier rep lica duplicate Voyager fuselage empha sis history home-built types Interspersed among museum aircraft 95 models ranging rubber-powered Scale Giants Military types displayed museums Warbird section racing airplanes Travelair Mystery Ship Laird Super Solu tion Wittman Bonzo Models classic era shown company Lockheed Vega Beechcraft Staggerwing Ryan NYP Seaplanes sheltered under wing Si korsky Amphibion Popular balloting decided winners three competition categories Flying Scale nonflying Scale flying sport Modelers displayed aircraft given colored ballots dis tinguishable ballots regular museum visitors counted five Prizes flight line passea EAA Convention July merchandise museum eift shon Although local publicity show large Sunday afternoon crowd laid rest doubts about success being measured number spectators An unexpected prob lem lack space museums large park ing lot cars spilled over onto wellkept lawns good fortune frozen recent cold weather could have largest Sunday crowd except Conven tion weekend Organizers currently thinking next years show aod asking format sugges tions Also being considered Scale rally prob ably scheduled August after FAA Convention would flown Pioneer Airport located directly adjacent museum Several large hangars field stuffed overflow aircraft th m,,m incl,dmo Models displayed throughout EAA Air Adventure Museums first annual Model Aircraft Show Warbird types 1 pictured Grumman FSF Bearcat Civil aircraft models R shown under wings historic full-size types such easily recognized trio L-R Ryan NYP replica Beechcraft Staggerwing Lockheed Vega Posed antiques EAA Museum Don Klapsteins Moraine Saulnier 1 WW i-type spans 82-in weighs 625 lb uses Enya 60 power Nearby Bob Radtkes DH Tiger Moth R quarter-scale weighs 18 lb began life Barkiay kit Power OPS 1 8-cu-in two-stroke engine Finish Sig Koverail nitrate dope K&B epoxy 46 Model Aviation Radio Contrd Scale Bob Dolly Wischer S-221 Lapham Peak Rd Delafleld WI 53018 Jim Gilgenbachs Convair XF2Y-1 Sea Dart ducted fan model displayed simulated shore line EAA Museum Engine OS 77 Dynamax fan unit models con struction includes balsa plywood foam fiberglass Keviar carbon fiber Finish K&B epoxy prize-winner Oshkosh model showdeservedly rare antiques classics both military civil Having hangars open modelers would notable incentive attract Scale enthusihsts know modelers have spired build airplanes after visit collec tion classics antiques Hole cutter May column brief mention making instrument panel sheet styrene plastic Punching smooth round hole styrene can somewhat frustrat ing elaborate panel may have up dozen Alignment holes best appear ance another problem An adjustable tool job cancels frustrations cutting point tool seen photo sharp blade intended use draftsmans compass Its cylindrical di mensioned fit place pencil lead se cured same screw would hold lead cutter end blade thin sharp penetrate minimum displacement mater ial tried cut styrene using blade compass extremely difficult control cutting through anything thicker paContinued page 135 DISTRIBUTED BY RED ff9 1*598 o soa Gabriel Road ero CA 93422 i~-1717 * * Long Engine Life * * Use BRU LINE Air Cleaner Completely Fuel Proof Nylon Rubber Parts Cat No 102 Air Cleaner Coarse Cat No 202 Air Cleaner Fine Replacement Inserts Cat No 104 PkI2 Inserts Coarse Cat No 204 PkI2 Inserts Fine FITS MOST ENGINES 25and UP SEE YOUR LOCAL HOBBY DEALER $225 $225 $195 $195 IF UNAVAILABLE LOCALLY SEND TO Add 75 shippingMichigan residents add 4% sales tax Bru Line Industries Inc PO Box 3786 Center Line Michigan 48015 July 1988 47 V Heres Wlschers really indispens able homemade tools circle cutter use styrene plastic balsa tell its tory make yourself column month Use drill press AVAILABLE AT AMERICAS FINEST HOBBY SHOPS around country interested will International Slope Race held Denmark sometime 1989 number fliers west coast have expressed interest competing inter ested going spectator compet itor contact will let know can get some info F3F rules provide disci plined certainly organized form slope competition lacks excitement true race US Britain races head-to-head compe titions between numerous fliers two five determined number laps usu ally 8 10 over closed course 400 500 ft results truly exciting form competition both competitors spectators Midairs inevitable type racing usually re sult careless over-exuberant flying can avoided cases happens experienced fliers say thats just part racing new trend slope racing starting appear trend toward smaller Sailplanes can fly considerably lighter winds considerably less expensive Unlimited-type racer FM limits Unlimited Class Racing allow wing load ings up 254 ozIsq ft results very large three meters very expensive Sailplanes race held California about month ago 1 A-meter Sailplanes what have heard very successful equally exciting standard racing conditions fairly light because lightness planes still possi ble hold competition really believe aspect slope racing can ex pand popularity certainly good way beginning racer gain some ex perience type flying mini mal investment Sailplane appeared bestof-class event Nisus designed Mark Allen features truly gorgeous fiberglass fuselage foam wings obechi veneer sheeting outstand ing performance have opportu nity fly yet have flown have truly impressed Right now have details its availa bility time article printed kits should market Another form competition slope com bat recently chance watch dem onstration slope combat would like share what learned con cept originally started out attempt pilot cut ribbon trailing other Sailplane may started out what has evolved allout take-no-prisoners form destruction derby procedure quite simple Everyone launches last remain ing air winner reality tempt knock everybody elses Sailplane out air incurring least amount damage own plane knocked down have three minutes repair plane get airborne pop ular technique center-punch other plane approaching behind higher speed climbing above imple menting split-S Visualize am sure can see its effectiveness type competition undeniably brutal everyone especially like fly Sailplanes once number kits being developed just type competition such Cheetah num ber power scale slope planes want emphasize type flying should done volunteer basis go out center-punch someones $600 ASW DG definitely asking trouble Something would like column feature Sailplane kit slope fliers out can get good idea just what available Any sug gestions Sailplanes think truly outstanding deserve shared other fliers would greatly appreci ated months Sailplane Scimitar Designed yours truly available through Aero-Mark Designs Scimitar versatile multitask Sailplane ideal thermal slope competition Without aile rons flaps drag-producing hinge lines accompany Scimitars wing visually aerodynamically clean quality achievable because novative wingevatoron control system wings pivoting control both pitch roll Scimitar exemplifies latest RC Sailplane design Sales pitch aside Scimitar truly outstanding Sail plane very smooth stable respon sive Construction Scimitar pretty simple fuselage fairly straightfor ward box construction wings builtup fully sheeted tail balsa sheeting Despite simplicity construc tion very strong can hold up 2 lb ballast strong winds Kits avail able directly $75 plus $8 shipping Thats about month hope will receiving lots stories photos ideas fellow Slopers out RC Scale/Wischers Continued page 47 per styrene blade has rigidly mounted controlled cant wander off its circular path solution problem construct homemade tool carrier clamped cutter end bar using setscrew bar alu minum could made either brass steel too having rectangular cross section about 375 has slot adjustment cen ter post bars slot made milling cutter could made drilling row closely spaced holes grinding out interven ing material rattail file slot dimen sioned fit 10-32 thread brass steel center post having diame ter about 375 turned down Continued page 138 II THE LEADER IN COMPETITION DIA 13 14 15 16 PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10 TO 20% INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534 634 72833/456 8334568 8Ia4566/27 94566/77/ 1045667 106W8W 10SEW Ii 46777A78 ii 5W Ii 6EW 1167 12 4W 12 5W 12 56 13 56 14 56 15 56 16 4/N 16 678 RC PYLON RACING SERIES 500 DIA PITCHPRICE 7 5N5N 8I 6778 SERIES 400C 86677/7 977A7 W WIDE BLADE EW EXTRA WIDE N MAAAAW July 1988 135 PROPELLERS SERIES lUll THP DESIGN TAILORED HELICAL PITCH DEVELOPED TO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP PRICE 6677A8 677/ 8 6778 67 678 NEW FULL BODY PILOT KIT Contains pilot head hands boots helmet cap goggles tult templates easy instruc tions Easy assemble finish Some simple sewing required Fully positionable too Price #2061/ scale895 #205-A scale ..995 #204-A scale .. 1095 #203-% scale .. 1695 DARNED GOOD AIRMEN Lightest pilots available Lifelike vinyl latex rubber Build Sportsman Barnstormer Full Body Bust YYY BUST PILOT KIT Contains pilot head helmet sport cap goggles lacket Easy assemble tinish j PrIC #lO81/e scale NEW #106- scale #lOS/s scale #104- scale #103- scale simple sewing required JET PILOT KIT Pilot has molded jet helmet Contains tace mask oxygen hose Entreme ly Realistic Weighs less 1/2 oz Price #3081/ scale595 #307- scale695 ORDERING INSTRUCTIONS See dealer first order direct Add $100 shipping NYS residents add 7% tax Send check money order CODS OK Send $100 catalog See Dealer add Dollar direct order handling end threaded 10-32 could also have made 10-32 machine screw nut above below bar None machining dimensions need exact Only operation demands precision drilling 062-in-diameter hole end poston exact centerfor short length music wire pressed soldered hole music wire pilot hold cutter centered over spot instru ment going located panel styrene panel cut shape cen ter of instrument holes drilled 062-in hole guide tools pilot soft wood backup block also has 062-in-diameter hole drilled pilot use tool mounting drill press spindle speed press adjusted slow possible cutter gently lowered styrene avoid heating cutter tip cutter tip got too hot would melt its way through panel would enlarge hole leave rough edges cutter will break through styrene few secondsa situation indicated cutout disc styrene beginning rotate take care avoid pressing cut ter wood block hard material shortens its life rapidly have found other uses homemade hole cutter can used produce clean light ening holes balsa parts such large wing ribs fuselage sides have also used holes /32 / plywood although thicker mate rial can rather abusive cutters sharp point However points very easily sharp ened oil stone using same technlque worn X-Acto blade cutting holes balsa pilot holes arent needed music wire sharpened point perfectly centered point can formed hold ing against Dremel cutoff disc rotating post drill press point will penetrate balsa effort point doesnt work too well styrene drilled holes pre ferred accurate location Its great feeling make panel multi ple holes exact location have right first attempt hole smoothly cut re quiring no subsequent touch-up hand tools homemade cutting tool has used models over period 20 years sharpening can remembered very small instrument panel holes below diameter 375 sharpen end brass steel tube appropriate diameter Mount tube drill press chuck use low est speed available spin tube through styrene overheating Brass tube must sharpened quite frequently Similar tubular hole cutters X-Acto made hardened steel have found two diame ters 187 437 Some tools have long-term usage ultimate crudity bending tubing have series wood dowels ranging diam eter % 1 grooved closely fit various sizes brass aluminum tubing tube material first softened nealing heatuse kitchen stove suffic es tube can wrapped around dow el confined groove produce angle bend desired distortion kinking tube confined within close-fitting groove avoid flattening would other wise occur during bending operation ad vantage scheme very small bend ra diuses can obtained tube material comes work-hardened before bend complete reanneal heat Steel tube much difficult work simple grooved wood dowel wont job Steel tube must confined closely sides point being formed order avoid distor tion Scale colors Reproducing colors Scale mod els exact shades has always subject contention contest judges expect some sort proof models colors precisely prototype modeler obligated prove choice colors correctnearly impossible obscure aircraft one-of-a-kind class antiques classics military prototypes might say lack color information makes types poor choice subject Another opimon modelers choice should unlimited rules bent accom modate subjects difficult document respect color authenticity latest list FAI rules-change suggestions contains proposal UK source seems make good sense Under heading Judging Fidelity Scale Craftsman ship list items judged dividual basis K-factors weight im portance lowest K-factor six classifications color marking surface texture proposal suggests reducing color K-factor three order alter its importance drastically reason change given follows Actual color difficult prove creates doc umentation problem both competitors judges Color photographs vary depending lighting conditions weather prevailing time Printed matter frequently inaccurate written descriptions vague line reasonlng would like add experience color negatives sent lo cal processors prints seldom given same treatment two successive printings would like exact color renditions prints almost never really satisfied average person may perfectly happy ap proximate colors Scale modeler has special requirements accuracy rarely present finlahed prints Both modelers judges divided opin ion what constitutes satisfactory documen tation color Some prefer color swatches fabric paint chips prototype Others satisfied color drawing Profile publication though printers selection ink color may doubtful accuracy prob lem arises competitor judge have con flicting opinions proposal England went suggest emphasis should placed surface texture changing its title Surface Texture Realism changing K-factor six eight further proposed increase Kfactor Surface Detail seven eight order sufficiently reward models complex aircraft changing two K-factors up ward proposal compensates loss three points color K-factor maintain pre vious mathematical balance total 65 judging factors increase award surface detail has subject controversy past several years because drastic reduction flight bo nus points awarded models complex proto types has suggested insuffi cient credit given modeler expends great effort complex model classic example given situation model extremely well executed last detail present externally internallybut prototype absolutely simple airplane devoid detail An example model ultralight airplane can built light fly extremely well also rates high static scoring because its faithful reproduction prototype no detail mimmum finlsh easily reproduced shape proposal effort strike balance tween models simple complex aircraft provide equal chance win As presently written rules favor simple mod el Inequalities judging standards combined some natural bias has always made competi tion distasteful some modelers Writing rules 138 Model Aviation RC Scale/Wischers Continued page 135 maintain balance may bring some Scale modelers contests Rules fit wide van ety models havent successfully formu lated past possible have doubts Proposals have also made change judges guide FAI rule book emphasize importance color scale detail mark ings proposal requests addition fol lowing paragraphs Consideration should given greater effort involved reproducing multicolored fin ishes difficult shades simulate pol ished metal etc compared model features two basic colors Marks awarded would reflect degree complexity color marks awarded should take account both accuracy complexity mark ings prototype marks awarded should reflect both ac curacy quantity scale detail present well-documented highly detailed model should score proportionately higher model little detail though full-size proto type latter has few visible details Future Scale World Championships FAI Committee International Aeromodeling ClAM now has two offers national aero clubs host 1990 Scale World Champion ships first Canada conducted Red Deer Alberta between Calgary Ed monston meet expected RC Scale competition second offer Belgium proposes meet held Genk Gent include both RC F4C CL F4B Scale RC Soaring/Blakeslee Continued page 49 An explanation rules appeared re cent edition SBSS newsletter Silent Flier piece written Preben Norholm goes F3F Slope Racing rules use pilot stands center 330-ft 100meter course After launch pilot has 30 sec onds get plane Onto course Ten laps timed winner round re ceives 1000 pointsand yes its exactly like F3B Speed task contest has minimum five rounds maximum 10 throw-out round Its very simple CD infinitely difficult competitor Top speeds good weather range 50 60 seconds best performance North Sea Cup 454 seconds 22-mph wind wind direction 200 side Danish record 403 sec 40-mph wind typical Danish Slope Racer has twist-wings roll flaps coupled elevator no brakes Wingspans average eight 85 ft use modi fied Eppler 180 374 alrfoils E374 thinned 85% 10% reflex top E180 often flattened popular airfoil used Denmark Thy Combination E180 root E374 tips thinned 10% Turn ing techniques less ballast name Speed game race highest winds 13 15 oz per sq ft unballasted 18 20 oz per sq ft ballasted Jerry Arana nine SBSS fliers mentioned earlier successful Slope Racers California During 1987 Nats Lincoln NE talked Jerry about F3F Jerry said didnt like idea flying plane time Hed rather race four planes time take chances midairs because like real air racing certainly agree Jerry multiplane racingwith too infrequent spectacular collisionis exciting especially spectators after talking Preben can appreciate decided go one-at-a-time Top F3F planes sophisticated expen sive modern F3B ships Furthermore fast est slot slope just off brow ridge really competitive pilots would want fly exactly narrow groove max imum airspeed results would unaccept ably expensive have mentioned newsletter F3B/USA previous columns available anyone enters $20 entry fee shows intent enter $5 pre-entry fee 1989 US FAI RC Soaring team selection program will put mailing list program participants will re ceive newsletter send appropri ate fee AMA HQ Attention Micheline Madi son newsletter being produced trial basis disseminate FM Soaring information interested F3B team selection pro gram want reproduce article recent first issue F3B/USA written John Wyss subject wood wing skins example kind useful information newsletter builders out looking material/technique very fast build ex tremely strong rivals Hans Muellers furniture-quality wings veneer avail able works great Flexable Handiwood name product veneer laminate VINTAGE -C ILAN 7ISOLIDATEC PBY-5A CATALINA 9ET WING SPAN ALL RIBS 8 FULL FaRMERS SHOWN ON EIC ERG COWLS $1090 PR CLtAR GUN BLISTERS $760 PR 4 LARGE PLAN SHEETS s $ 1895 6FT WING SPAN MODEL PSY-SA ENGINE COWLS $750 PR Plans $1495 GUN BLISTERS $550 PR ADD $300 POSTAGE CATALOG-OVER SOPLANS $100 DEALERS WRITE WORLD 0 WIDE SID MORGAN 13157 ORMOND BELLE VALLE MICH 48111 USi consisting thin layer wood bonded pa per backing wood approximately %5-in thick paper either five 10 mils thick have tried five-mil material total thickness 00217 approximately 6 large selection wood types avail able have used pine mahogany success fully material comes sheets like ordinary plywood 4 x 8 ft can rolled ship ment UPS 4 x 8 sheet mahogany weighs 44 oz works out 138 oz per sq ft too heavy F3B Cross-Country designs recommended floaters use material first prepare extruded styrofoam blue foam spars servo wires joiners installed Save material trimmed off use beds laminating process next steps sure core chord % bed width provide support trailing edge trailing edge should cut sanded sharp attach skin core place layer 37-oz S-type glass cloth paper side skin squeegee Safe-T-Poxy cloth until evenly saturated Im careful use too much epoxy place core tween two wet skins core beds pin through skin/cores beds ends nothing will shift clamp whole thing together place clamps vacuum bag should work fine epoxy cured trim sand trailing edge sharp add spruce leading edge Sanding skin lightly done No 600 sandpaper final step spray clear wood finish little extra-fine steel wool gives great finish flaps ailerons cut free after wing has finish coated Stabs can made using veneer epoxied blue foam glass cloth strong Flexable Hondi wood may obtained local wood specialty outlet available Consolidated Hardwoods 7380 West 119th Ave Broomfield CO 80020 companys phone 303 466-1839 would good thing call prices shipping informa tion youre going order direct material costs about $60 per sheet FOB News Dodgson skunk works Bob Dodgson wrote let us know about new Super Windsong has developed what Ill call temporary basis until Bob comes up its official name Bobs objective strengthen Windsongs construction neednt worry about bending wing strong zoom launch bringing flap/aileron flutter during fast dive regular Wind140 Model Aviation
Edition: Model Aviation - 1988/07
Page Numbers: 46, 47, 135, 138, 140
EAA Model Show After observing years mall shows have found perfect environ ment model aircraft show March 20 1988 attended first annual EAA Air Ad venture Museum Model Aircraft Show Witt man Field Oshkosh WI event co sponsored FAA two local clubs Winne bago RC Fliers Valley Aero Modelers Show managers EAA Education Director Chuck Larsen Museum Director Carl Swick ley vast museum building due further en largement before next show has no space shortage Polished floors sparkling airplane displays accented models surrounded air craft wide variety Wright Flier rep lica duplicate Voyager fuselage empha sis history home-built types Interspersed among museum aircraft 95 models ranging rubber-powered Scale Giants Military types displayed museums Warbird section racing airplanes Travelair Mystery Ship Laird Super Solu tion Wittman Bonzo Models classic era shown company Lockheed Vega Beechcraft Staggerwing Ryan NYP Seaplanes sheltered under wing Si korsky Amphibion Popular balloting decided winners three competition categories Flying Scale nonflying Scale flying sport Modelers displayed aircraft given colored ballots dis tinguishable ballots regular museum visitors counted five Prizes flight line passea EAA Convention July merchandise museum eift shon Although local publicity show large Sunday afternoon crowd laid rest doubts about success being measured number spectators An unexpected prob lem lack space museums large park ing lot cars spilled over onto wellkept lawns good fortune frozen recent cold weather could have largest Sunday crowd except Conven tion weekend Organizers currently thinking next years show aod asking format sugges tions Also being considered Scale rally prob ably scheduled August after FAA Convention would flown Pioneer Airport located directly adjacent museum Several large hangars field stuffed overflow aircraft th m,,m incl,dmo Models displayed throughout EAA Air Adventure Museums first annual Model Aircraft Show Warbird types 1 pictured Grumman FSF Bearcat Civil aircraft models R shown under wings historic full-size types such easily recognized trio L-R Ryan NYP replica Beechcraft Staggerwing Lockheed Vega Posed antiques EAA Museum Don Klapsteins Moraine Saulnier 1 WW i-type spans 82-in weighs 625 lb uses Enya 60 power Nearby Bob Radtkes DH Tiger Moth R quarter-scale weighs 18 lb began life Barkiay kit Power OPS 1 8-cu-in two-stroke engine Finish Sig Koverail nitrate dope K&B epoxy 46 Model Aviation Radio Contrd Scale Bob Dolly Wischer S-221 Lapham Peak Rd Delafleld WI 53018 Jim Gilgenbachs Convair XF2Y-1 Sea Dart ducted fan model displayed simulated shore line EAA Museum Engine OS 77 Dynamax fan unit models con struction includes balsa plywood foam fiberglass Keviar carbon fiber Finish K&B epoxy prize-winner Oshkosh model showdeservedly rare antiques classics both military civil Having hangars open modelers would notable incentive attract Scale enthusihsts know modelers have spired build airplanes after visit collec tion classics antiques Hole cutter May column brief mention making instrument panel sheet styrene plastic Punching smooth round hole styrene can somewhat frustrat ing elaborate panel may have up dozen Alignment holes best appear ance another problem An adjustable tool job cancels frustrations cutting point tool seen photo sharp blade intended use draftsmans compass Its cylindrical di mensioned fit place pencil lead se cured same screw would hold lead cutter end blade thin sharp penetrate minimum displacement mater ial tried cut styrene using blade compass extremely difficult control cutting through anything thicker paContinued page 135 DISTRIBUTED BY RED ff9 1*598 o soa Gabriel Road ero CA 93422 i~-1717 * * Long Engine Life * * Use BRU LINE Air Cleaner Completely Fuel Proof Nylon Rubber Parts Cat No 102 Air Cleaner Coarse Cat No 202 Air Cleaner Fine Replacement Inserts Cat No 104 PkI2 Inserts Coarse Cat No 204 PkI2 Inserts Fine FITS MOST ENGINES 25and UP SEE YOUR LOCAL HOBBY DEALER $225 $225 $195 $195 IF UNAVAILABLE LOCALLY SEND TO Add 75 shippingMichigan residents add 4% sales tax Bru Line Industries Inc PO Box 3786 Center Line Michigan 48015 July 1988 47 V Heres Wlschers really indispens able homemade tools circle cutter use styrene plastic balsa tell its tory make yourself column month Use drill press AVAILABLE AT AMERICAS FINEST HOBBY SHOPS around country interested will International Slope Race held Denmark sometime 1989 number fliers west coast have expressed interest competing inter ested going spectator compet itor contact will let know can get some info F3F rules provide disci plined certainly organized form slope competition lacks excitement true race US Britain races head-to-head compe titions between numerous fliers two five determined number laps usu ally 8 10 over closed course 400 500 ft results truly exciting form competition both competitors spectators Midairs inevitable type racing usually re sult careless over-exuberant flying can avoided cases happens experienced fliers say thats just part racing new trend slope racing starting appear trend toward smaller Sailplanes can fly considerably lighter winds considerably less expensive Unlimited-type racer FM limits Unlimited Class Racing allow wing load ings up 254 ozIsq ft results very large three meters very expensive Sailplanes race held California about month ago 1 A-meter Sailplanes what have heard very successful equally exciting standard racing conditions fairly light because lightness planes still possi ble hold competition really believe aspect slope racing can ex pand popularity certainly good way beginning racer gain some ex perience type flying mini mal investment Sailplane appeared bestof-class event Nisus designed Mark Allen features truly gorgeous fiberglass fuselage foam wings obechi veneer sheeting outstand ing performance have opportu nity fly yet have flown have truly impressed Right now have details its availa bility time article printed kits should market Another form competition slope com bat recently chance watch dem onstration slope combat would like share what learned con cept originally started out attempt pilot cut ribbon trailing other Sailplane may started out what has evolved allout take-no-prisoners form destruction derby procedure quite simple Everyone launches last remain ing air winner reality tempt knock everybody elses Sailplane out air incurring least amount damage own plane knocked down have three minutes repair plane get airborne pop ular technique center-punch other plane approaching behind higher speed climbing above imple menting split-S Visualize am sure can see its effectiveness type competition undeniably brutal everyone especially like fly Sailplanes once number kits being developed just type competition such Cheetah num ber power scale slope planes want emphasize type flying should done volunteer basis go out center-punch someones $600 ASW DG definitely asking trouble Something would like column feature Sailplane kit slope fliers out can get good idea just what available Any sug gestions Sailplanes think truly outstanding deserve shared other fliers would greatly appreci ated months Sailplane Scimitar Designed yours truly available through Aero-Mark Designs Scimitar versatile multitask Sailplane ideal thermal slope competition Without aile rons flaps drag-producing hinge lines accompany Scimitars wing visually aerodynamically clean quality achievable because novative wingevatoron control system wings pivoting control both pitch roll Scimitar exemplifies latest RC Sailplane design Sales pitch aside Scimitar truly outstanding Sail plane very smooth stable respon sive Construction Scimitar pretty simple fuselage fairly straightfor ward box construction wings builtup fully sheeted tail balsa sheeting Despite simplicity construc tion very strong can hold up 2 lb ballast strong winds Kits avail able directly $75 plus $8 shipping Thats about month hope will receiving lots stories photos ideas fellow Slopers out RC Scale/Wischers Continued page 47 per styrene blade has rigidly mounted controlled cant wander off its circular path solution problem construct homemade tool carrier clamped cutter end bar using setscrew bar alu minum could made either brass steel too having rectangular cross section about 375 has slot adjustment cen ter post bars slot made milling cutter could made drilling row closely spaced holes grinding out interven ing material rattail file slot dimen sioned fit 10-32 thread brass steel center post having diame ter about 375 turned down Continued page 138 II THE LEADER IN COMPETITION DIA 13 14 15 16 PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10 TO 20% INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534 634 72833/456 8334568 8Ia4566/27 94566/77/ 1045667 106W8W 10SEW Ii 46777A78 ii 5W Ii 6EW 1167 12 4W 12 5W 12 56 13 56 14 56 15 56 16 4/N 16 678 RC PYLON RACING SERIES 500 DIA PITCHPRICE 7 5N5N 8I 6778 SERIES 400C 86677/7 977A7 W WIDE BLADE EW EXTRA WIDE N MAAAAW July 1988 135 PROPELLERS SERIES lUll THP DESIGN TAILORED HELICAL PITCH DEVELOPED TO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP PRICE 6677A8 677/ 8 6778 67 678 NEW FULL BODY PILOT KIT Contains pilot head hands boots helmet cap goggles tult templates easy instruc tions Easy assemble finish Some simple sewing required Fully positionable too Price #2061/ scale895 #205-A scale ..995 #204-A scale .. 1095 #203-% scale .. 1695 DARNED GOOD AIRMEN Lightest pilots available Lifelike vinyl latex rubber Build Sportsman Barnstormer Full Body Bust YYY BUST PILOT KIT Contains pilot head helmet sport cap goggles lacket Easy assemble tinish j PrIC #lO81/e scale NEW #106- scale #lOS/s scale #104- scale #103- scale simple sewing required JET PILOT KIT Pilot has molded jet helmet Contains tace mask oxygen hose Entreme ly Realistic Weighs less 1/2 oz Price #3081/ scale595 #307- scale695 ORDERING INSTRUCTIONS See dealer first order direct Add $100 shipping NYS residents add 7% tax Send check money order CODS OK Send $100 catalog See Dealer add Dollar direct order handling end threaded 10-32 could also have made 10-32 machine screw nut above below bar None machining dimensions need exact Only operation demands precision drilling 062-in-diameter hole end poston exact centerfor short length music wire pressed soldered hole music wire pilot hold cutter centered over spot instru ment going located panel styrene panel cut shape cen ter of instrument holes drilled 062-in hole guide tools pilot soft wood backup block also has 062-in-diameter hole drilled pilot use tool mounting drill press spindle speed press adjusted slow possible cutter gently lowered styrene avoid heating cutter tip cutter tip got too hot would melt its way through panel would enlarge hole leave rough edges cutter will break through styrene few secondsa situation indicated cutout disc styrene beginning rotate take care avoid pressing cut ter wood block hard material shortens its life rapidly have found other uses homemade hole cutter can used produce clean light ening holes balsa parts such large wing ribs fuselage sides have also used holes /32 / plywood although thicker mate rial can rather abusive cutters sharp point However points very easily sharp ened oil stone using same technlque worn X-Acto blade cutting holes balsa pilot holes arent needed music wire sharpened point perfectly centered point can formed hold ing against Dremel cutoff disc rotating post drill press point will penetrate balsa effort point doesnt work too well styrene drilled holes pre ferred accurate location Its great feeling make panel multi ple holes exact location have right first attempt hole smoothly cut re quiring no subsequent touch-up hand tools homemade cutting tool has used models over period 20 years sharpening can remembered very small instrument panel holes below diameter 375 sharpen end brass steel tube appropriate diameter Mount tube drill press chuck use low est speed available spin tube through styrene overheating Brass tube must sharpened quite frequently Similar tubular hole cutters X-Acto made hardened steel have found two diame ters 187 437 Some tools have long-term usage ultimate crudity bending tubing have series wood dowels ranging diam eter % 1 grooved closely fit various sizes brass aluminum tubing tube material first softened nealing heatuse kitchen stove suffic es tube can wrapped around dow el confined groove produce angle bend desired distortion kinking tube confined within close-fitting groove avoid flattening would other wise occur during bending operation ad vantage scheme very small bend ra diuses can obtained tube material comes work-hardened before bend complete reanneal heat Steel tube much difficult work simple grooved wood dowel wont job Steel tube must confined closely sides point being formed order avoid distor tion Scale colors Reproducing colors Scale mod els exact shades has always subject contention contest judges expect some sort proof models colors precisely prototype modeler obligated prove choice colors correctnearly impossible obscure aircraft one-of-a-kind class antiques classics military prototypes might say lack color information makes types poor choice subject Another opimon modelers choice should unlimited rules bent accom modate subjects difficult document respect color authenticity latest list FAI rules-change suggestions contains proposal UK source seems make good sense Under heading Judging Fidelity Scale Craftsman ship list items judged dividual basis K-factors weight im portance lowest K-factor six classifications color marking surface texture proposal suggests reducing color K-factor three order alter its importance drastically reason change given follows Actual color difficult prove creates doc umentation problem both competitors judges Color photographs vary depending lighting conditions weather prevailing time Printed matter frequently inaccurate written descriptions vague line reasonlng would like add experience color negatives sent lo cal processors prints seldom given same treatment two successive printings would like exact color renditions prints almost never really satisfied average person may perfectly happy ap proximate colors Scale modeler has special requirements accuracy rarely present finlahed prints Both modelers judges divided opin ion what constitutes satisfactory documen tation color Some prefer color swatches fabric paint chips prototype Others satisfied color drawing Profile publication though printers selection ink color may doubtful accuracy prob lem arises competitor judge have con flicting opinions proposal England went suggest emphasis should placed surface texture changing its title Surface Texture Realism changing K-factor six eight further proposed increase Kfactor Surface Detail seven eight order sufficiently reward models complex aircraft changing two K-factors up ward proposal compensates loss three points color K-factor maintain pre vious mathematical balance total 65 judging factors increase award surface detail has subject controversy past several years because drastic reduction flight bo nus points awarded models complex proto types has suggested insuffi cient credit given modeler expends great effort complex model classic example given situation model extremely well executed last detail present externally internallybut prototype absolutely simple airplane devoid detail An example model ultralight airplane can built light fly extremely well also rates high static scoring because its faithful reproduction prototype no detail mimmum finlsh easily reproduced shape proposal effort strike balance tween models simple complex aircraft provide equal chance win As presently written rules favor simple mod el Inequalities judging standards combined some natural bias has always made competi tion distasteful some modelers Writing rules 138 Model Aviation RC Scale/Wischers Continued page 135 maintain balance may bring some Scale modelers contests Rules fit wide van ety models havent successfully formu lated past possible have doubts Proposals have also made change judges guide FAI rule book emphasize importance color scale detail mark ings proposal requests addition fol lowing paragraphs Consideration should given greater effort involved reproducing multicolored fin ishes difficult shades simulate pol ished metal etc compared model features two basic colors Marks awarded would reflect degree complexity color marks awarded should take account both accuracy complexity mark ings prototype marks awarded should reflect both ac curacy quantity scale detail present well-documented highly detailed model should score proportionately higher model little detail though full-size proto type latter has few visible details Future Scale World Championships FAI Committee International Aeromodeling ClAM now has two offers national aero clubs host 1990 Scale World Champion ships first Canada conducted Red Deer Alberta between Calgary Ed monston meet expected RC Scale competition second offer Belgium proposes meet held Genk Gent include both RC F4C CL F4B Scale RC Soaring/Blakeslee Continued page 49 An explanation rules appeared re cent edition SBSS newsletter Silent Flier piece written Preben Norholm goes F3F Slope Racing rules use pilot stands center 330-ft 100meter course After launch pilot has 30 sec onds get plane Onto course Ten laps timed winner round re ceives 1000 pointsand yes its exactly like F3B Speed task contest has minimum five rounds maximum 10 throw-out round Its very simple CD infinitely difficult competitor Top speeds good weather range 50 60 seconds best performance North Sea Cup 454 seconds 22-mph wind wind direction 200 side Danish record 403 sec 40-mph wind typical Danish Slope Racer has twist-wings roll flaps coupled elevator no brakes Wingspans average eight 85 ft use modi fied Eppler 180 374 alrfoils E374 thinned 85% 10% reflex top E180 often flattened popular airfoil used Denmark Thy Combination E180 root E374 tips thinned 10% Turn ing techniques less ballast name Speed game race highest winds 13 15 oz per sq ft unballasted 18 20 oz per sq ft ballasted Jerry Arana nine SBSS fliers mentioned earlier successful Slope Racers California During 1987 Nats Lincoln NE talked Jerry about F3F Jerry said didnt like idea flying plane time Hed rather race four planes time take chances midairs because like real air racing certainly agree Jerry multiplane racingwith too infrequent spectacular collisionis exciting especially spectators after talking Preben can appreciate decided go one-at-a-time Top F3F planes sophisticated expen sive modern F3B ships Furthermore fast est slot slope just off brow ridge really competitive pilots would want fly exactly narrow groove max imum airspeed results would unaccept ably expensive have mentioned newsletter F3B/USA previous columns available anyone enters $20 entry fee shows intent enter $5 pre-entry fee 1989 US FAI RC Soaring team selection program will put mailing list program participants will re ceive newsletter send appropri ate fee AMA HQ Attention Micheline Madi son newsletter being produced trial basis disseminate FM Soaring information interested F3B team selection pro gram want reproduce article recent first issue F3B/USA written John Wyss subject wood wing skins example kind useful information newsletter builders out looking material/technique very fast build ex tremely strong rivals Hans Muellers furniture-quality wings veneer avail able works great Flexable Handiwood name product veneer laminate VINTAGE -C ILAN 7ISOLIDATEC PBY-5A CATALINA 9ET WING SPAN ALL RIBS 8 FULL FaRMERS SHOWN ON EIC ERG COWLS $1090 PR CLtAR GUN BLISTERS $760 PR 4 LARGE PLAN SHEETS s $ 1895 6FT WING SPAN MODEL PSY-SA ENGINE COWLS $750 PR Plans $1495 GUN BLISTERS $550 PR ADD $300 POSTAGE CATALOG-OVER SOPLANS $100 DEALERS WRITE WORLD 0 WIDE SID MORGAN 13157 ORMOND BELLE VALLE MICH 48111 USi consisting thin layer wood bonded pa per backing wood approximately %5-in thick paper either five 10 mils thick have tried five-mil material total thickness 00217 approximately 6 large selection wood types avail able have used pine mahogany success fully material comes sheets like ordinary plywood 4 x 8 ft can rolled ship ment UPS 4 x 8 sheet mahogany weighs 44 oz works out 138 oz per sq ft too heavy F3B Cross-Country designs recommended floaters use material first prepare extruded styrofoam blue foam spars servo wires joiners installed Save material trimmed off use beds laminating process next steps sure core chord % bed width provide support trailing edge trailing edge should cut sanded sharp attach skin core place layer 37-oz S-type glass cloth paper side skin squeegee Safe-T-Poxy cloth until evenly saturated Im careful use too much epoxy place core tween two wet skins core beds pin through skin/cores beds ends nothing will shift clamp whole thing together place clamps vacuum bag should work fine epoxy cured trim sand trailing edge sharp add spruce leading edge Sanding skin lightly done No 600 sandpaper final step spray clear wood finish little extra-fine steel wool gives great finish flaps ailerons cut free after wing has finish coated Stabs can made using veneer epoxied blue foam glass cloth strong Flexable Hondi wood may obtained local wood specialty outlet available Consolidated Hardwoods 7380 West 119th Ave Broomfield CO 80020 companys phone 303 466-1839 would good thing call prices shipping informa tion youre going order direct material costs about $60 per sheet FOB News Dodgson skunk works Bob Dodgson wrote let us know about new Super Windsong has developed what Ill call temporary basis until Bob comes up its official name Bobs objective strengthen Windsongs construction neednt worry about bending wing strong zoom launch bringing flap/aileron flutter during fast dive regular Wind140 Model Aviation
Edition: Model Aviation - 1988/07
Page Numbers: 46, 47, 135, 138, 140
EAA Model Show After observing years mall shows have found perfect environ ment model aircraft show March 20 1988 attended first annual EAA Air Ad venture Museum Model Aircraft Show Witt man Field Oshkosh WI event co sponsored FAA two local clubs Winne bago RC Fliers Valley Aero Modelers Show managers EAA Education Director Chuck Larsen Museum Director Carl Swick ley vast museum building due further en largement before next show has no space shortage Polished floors sparkling airplane displays accented models surrounded air craft wide variety Wright Flier rep lica duplicate Voyager fuselage empha sis history home-built types Interspersed among museum aircraft 95 models ranging rubber-powered Scale Giants Military types displayed museums Warbird section racing airplanes Travelair Mystery Ship Laird Super Solu tion Wittman Bonzo Models classic era shown company Lockheed Vega Beechcraft Staggerwing Ryan NYP Seaplanes sheltered under wing Si korsky Amphibion Popular balloting decided winners three competition categories Flying Scale nonflying Scale flying sport Modelers displayed aircraft given colored ballots dis tinguishable ballots regular museum visitors counted five Prizes flight line passea EAA Convention July merchandise museum eift shon Although local publicity show large Sunday afternoon crowd laid rest doubts about success being measured number spectators An unexpected prob lem lack space museums large park ing lot cars spilled over onto wellkept lawns good fortune frozen recent cold weather could have largest Sunday crowd except Conven tion weekend Organizers currently thinking next years show aod asking format sugges tions Also being considered Scale rally prob ably scheduled August after FAA Convention would flown Pioneer Airport located directly adjacent museum Several large hangars field stuffed overflow aircraft th m,,m incl,dmo Models displayed throughout EAA Air Adventure Museums first annual Model Aircraft Show Warbird types 1 pictured Grumman FSF Bearcat Civil aircraft models R shown under wings historic full-size types such easily recognized trio L-R Ryan NYP replica Beechcraft Staggerwing Lockheed Vega Posed antiques EAA Museum Don Klapsteins Moraine Saulnier 1 WW i-type spans 82-in weighs 625 lb uses Enya 60 power Nearby Bob Radtkes DH Tiger Moth R quarter-scale weighs 18 lb began life Barkiay kit Power OPS 1 8-cu-in two-stroke engine Finish Sig Koverail nitrate dope K&B epoxy 46 Model Aviation Radio Contrd Scale Bob Dolly Wischer S-221 Lapham Peak Rd Delafleld WI 53018 Jim Gilgenbachs Convair XF2Y-1 Sea Dart ducted fan model displayed simulated shore line EAA Museum Engine OS 77 Dynamax fan unit models con struction includes balsa plywood foam fiberglass Keviar carbon fiber Finish K&B epoxy prize-winner Oshkosh model showdeservedly rare antiques classics both military civil Having hangars open modelers would notable incentive attract Scale enthusihsts know modelers have spired build airplanes after visit collec tion classics antiques Hole cutter May column brief mention making instrument panel sheet styrene plastic Punching smooth round hole styrene can somewhat frustrat ing elaborate panel may have up dozen Alignment holes best appear ance another problem An adjustable tool job cancels frustrations cutting point tool seen photo sharp blade intended use draftsmans compass Its cylindrical di mensioned fit place pencil lead se cured same screw would hold lead cutter end blade thin sharp penetrate minimum displacement mater ial tried cut styrene using blade compass extremely difficult control cutting through anything thicker paContinued page 135 DISTRIBUTED BY RED ff9 1*598 o soa Gabriel Road ero CA 93422 i~-1717 * * Long Engine Life * * Use BRU LINE Air Cleaner Completely Fuel Proof Nylon Rubber Parts Cat No 102 Air Cleaner Coarse Cat No 202 Air Cleaner Fine Replacement Inserts Cat No 104 PkI2 Inserts Coarse Cat No 204 PkI2 Inserts Fine FITS MOST ENGINES 25and UP SEE YOUR LOCAL HOBBY DEALER $225 $225 $195 $195 IF UNAVAILABLE LOCALLY SEND TO Add 75 shippingMichigan residents add 4% sales tax Bru Line Industries Inc PO Box 3786 Center Line Michigan 48015 July 1988 47 V Heres Wlschers really indispens able homemade tools circle cutter use styrene plastic balsa tell its tory make yourself column month Use drill press AVAILABLE AT AMERICAS FINEST HOBBY SHOPS around country interested will International Slope Race held Denmark sometime 1989 number fliers west coast have expressed interest competing inter ested going spectator compet itor contact will let know can get some info F3F rules provide disci plined certainly organized form slope competition lacks excitement true race US Britain races head-to-head compe titions between numerous fliers two five determined number laps usu ally 8 10 over closed course 400 500 ft results truly exciting form competition both competitors spectators Midairs inevitable type racing usually re sult careless over-exuberant flying can avoided cases happens experienced fliers say thats just part racing new trend slope racing starting appear trend toward smaller Sailplanes can fly considerably lighter winds considerably less expensive Unlimited-type racer FM limits Unlimited Class Racing allow wing load ings up 254 ozIsq ft results very large three meters very expensive Sailplanes race held California about month ago 1 A-meter Sailplanes what have heard very successful equally exciting standard racing conditions fairly light because lightness planes still possi ble hold competition really believe aspect slope racing can ex pand popularity certainly good way beginning racer gain some ex perience type flying mini mal investment Sailplane appeared bestof-class event Nisus designed Mark Allen features truly gorgeous fiberglass fuselage foam wings obechi veneer sheeting outstand ing performance have opportu nity fly yet have flown have truly impressed Right now have details its availa bility time article printed kits should market Another form competition slope com bat recently chance watch dem onstration slope combat would like share what learned con cept originally started out attempt pilot cut ribbon trailing other Sailplane may started out what has evolved allout take-no-prisoners form destruction derby procedure quite simple Everyone launches last remain ing air winner reality tempt knock everybody elses Sailplane out air incurring least amount damage own plane knocked down have three minutes repair plane get airborne pop ular technique center-punch other plane approaching behind higher speed climbing above imple menting split-S Visualize am sure can see its effectiveness type competition undeniably brutal everyone especially like fly Sailplanes once number kits being developed just type competition such Cheetah num ber power scale slope planes want emphasize type flying should done volunteer basis go out center-punch someones $600 ASW DG definitely asking trouble Something would like column feature Sailplane kit slope fliers out can get good idea just what available Any sug gestions Sailplanes think truly outstanding deserve shared other fliers would greatly appreci ated months Sailplane Scimitar Designed yours truly available through Aero-Mark Designs Scimitar versatile multitask Sailplane ideal thermal slope competition Without aile rons flaps drag-producing hinge lines accompany Scimitars wing visually aerodynamically clean quality achievable because novative wingevatoron control system wings pivoting control both pitch roll Scimitar exemplifies latest RC Sailplane design Sales pitch aside Scimitar truly outstanding Sail plane very smooth stable respon sive Construction Scimitar pretty simple fuselage fairly straightfor ward box construction wings builtup fully sheeted tail balsa sheeting Despite simplicity construc tion very strong can hold up 2 lb ballast strong winds Kits avail able directly $75 plus $8 shipping Thats about month hope will receiving lots stories photos ideas fellow Slopers out RC Scale/Wischers Continued page 47 per styrene blade has rigidly mounted controlled cant wander off its circular path solution problem construct homemade tool carrier clamped cutter end bar using setscrew bar alu minum could made either brass steel too having rectangular cross section about 375 has slot adjustment cen ter post bars slot made milling cutter could made drilling row closely spaced holes grinding out interven ing material rattail file slot dimen sioned fit 10-32 thread brass steel center post having diame ter about 375 turned down Continued page 138 II THE LEADER IN COMPETITION DIA 13 14 15 16 PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10 TO 20% INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534 634 72833/456 8334568 8Ia4566/27 94566/77/ 1045667 106W8W 10SEW Ii 46777A78 ii 5W Ii 6EW 1167 12 4W 12 5W 12 56 13 56 14 56 15 56 16 4/N 16 678 RC PYLON RACING SERIES 500 DIA PITCHPRICE 7 5N5N 8I 6778 SERIES 400C 86677/7 977A7 W WIDE BLADE EW EXTRA WIDE N MAAAAW July 1988 135 PROPELLERS SERIES lUll THP DESIGN TAILORED HELICAL PITCH DEVELOPED TO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP PRICE 6677A8 677/ 8 6778 67 678 NEW FULL BODY PILOT KIT Contains pilot head hands boots helmet cap goggles tult templates easy instruc tions Easy assemble finish Some simple sewing required Fully positionable too Price #2061/ scale895 #205-A scale ..995 #204-A scale .. 1095 #203-% scale .. 1695 DARNED GOOD AIRMEN Lightest pilots available Lifelike vinyl latex rubber Build Sportsman Barnstormer Full Body Bust YYY BUST PILOT KIT Contains pilot head helmet sport cap goggles lacket Easy assemble tinish j PrIC #lO81/e scale NEW #106- scale #lOS/s scale #104- scale #103- scale simple sewing required JET PILOT KIT Pilot has molded jet helmet Contains tace mask oxygen hose Entreme ly Realistic Weighs less 1/2 oz Price #3081/ scale595 #307- scale695 ORDERING INSTRUCTIONS See dealer first order direct Add $100 shipping NYS residents add 7% tax Send check money order CODS OK Send $100 catalog See Dealer add Dollar direct order handling end threaded 10-32 could also have made 10-32 machine screw nut above below bar None machining dimensions need exact Only operation demands precision drilling 062-in-diameter hole end poston exact centerfor short length music wire pressed soldered hole music wire pilot hold cutter centered over spot instru ment going located panel styrene panel cut shape cen ter of instrument holes drilled 062-in hole guide tools pilot soft wood backup block also has 062-in-diameter hole drilled pilot use tool mounting drill press spindle speed press adjusted slow possible cutter gently lowered styrene avoid heating cutter tip cutter tip got too hot would melt its way through panel would enlarge hole leave rough edges cutter will break through styrene few secondsa situation indicated cutout disc styrene beginning rotate take care avoid pressing cut ter wood block hard material shortens its life rapidly have found other uses homemade hole cutter can used produce clean light ening holes balsa parts such large wing ribs fuselage sides have also used holes /32 / plywood although thicker mate rial can rather abusive cutters sharp point However points very easily sharp ened oil stone using same technlque worn X-Acto blade cutting holes balsa pilot holes arent needed music wire sharpened point perfectly centered point can formed hold ing against Dremel cutoff disc rotating post drill press point will penetrate balsa effort point doesnt work too well styrene drilled holes pre ferred accurate location Its great feeling make panel multi ple holes exact location have right first attempt hole smoothly cut re quiring no subsequent touch-up hand tools homemade cutting tool has used models over period 20 years sharpening can remembered very small instrument panel holes below diameter 375 sharpen end brass steel tube appropriate diameter Mount tube drill press chuck use low est speed available spin tube through styrene overheating Brass tube must sharpened quite frequently Similar tubular hole cutters X-Acto made hardened steel have found two diame ters 187 437 Some tools have long-term usage ultimate crudity bending tubing have series wood dowels ranging diam eter % 1 grooved closely fit various sizes brass aluminum tubing tube material first softened nealing heatuse kitchen stove suffic es tube can wrapped around dow el confined groove produce angle bend desired distortion kinking tube confined within close-fitting groove avoid flattening would other wise occur during bending operation ad vantage scheme very small bend ra diuses can obtained tube material comes work-hardened before bend complete reanneal heat Steel tube much difficult work simple grooved wood dowel wont job Steel tube must confined closely sides point being formed order avoid distor tion Scale colors Reproducing colors Scale mod els exact shades has always subject contention contest judges expect some sort proof models colors precisely prototype modeler obligated prove choice colors correctnearly impossible obscure aircraft one-of-a-kind class antiques classics military prototypes might say lack color information makes types poor choice subject Another opimon modelers choice should unlimited rules bent accom modate subjects difficult document respect color authenticity latest list FAI rules-change suggestions contains proposal UK source seems make good sense Under heading Judging Fidelity Scale Craftsman ship list items judged dividual basis K-factors weight im portance lowest K-factor six classifications color marking surface texture proposal suggests reducing color K-factor three order alter its importance drastically reason change given follows Actual color difficult prove creates doc umentation problem both competitors judges Color photographs vary depending lighting conditions weather prevailing time Printed matter frequently inaccurate written descriptions vague line reasonlng would like add experience color negatives sent lo cal processors prints seldom given same treatment two successive printings would like exact color renditions prints almost never really satisfied average person may perfectly happy ap proximate colors Scale modeler has special requirements accuracy rarely present finlahed prints Both modelers judges divided opin ion what constitutes satisfactory documen tation color Some prefer color swatches fabric paint chips prototype Others satisfied color drawing Profile publication though printers selection ink color may doubtful accuracy prob lem arises competitor judge have con flicting opinions proposal England went suggest emphasis should placed surface texture changing its title Surface Texture Realism changing K-factor six eight further proposed increase Kfactor Surface Detail seven eight order sufficiently reward models complex aircraft changing two K-factors up ward proposal compensates loss three points color K-factor maintain pre vious mathematical balance total 65 judging factors increase award surface detail has subject controversy past several years because drastic reduction flight bo nus points awarded models complex proto types has suggested insuffi cient credit given modeler expends great effort complex model classic example given situation model extremely well executed last detail present externally internallybut prototype absolutely simple airplane devoid detail An example model ultralight airplane can built light fly extremely well also rates high static scoring because its faithful reproduction prototype no detail mimmum finlsh easily reproduced shape proposal effort strike balance tween models simple complex aircraft provide equal chance win As presently written rules favor simple mod el Inequalities judging standards combined some natural bias has always made competi tion distasteful some modelers Writing rules 138 Model Aviation RC Scale/Wischers Continued page 135 maintain balance may bring some Scale modelers contests Rules fit wide van ety models havent successfully formu lated past possible have doubts Proposals have also made change judges guide FAI rule book emphasize importance color scale detail mark ings proposal requests addition fol lowing paragraphs Consideration should given greater effort involved reproducing multicolored fin ishes difficult shades simulate pol ished metal etc compared model features two basic colors Marks awarded would reflect degree complexity color marks awarded should take account both accuracy complexity mark ings prototype marks awarded should reflect both ac curacy quantity scale detail present well-documented highly detailed model should score proportionately higher model little detail though full-size proto type latter has few visible details Future Scale World Championships FAI Committee International Aeromodeling ClAM now has two offers national aero clubs host 1990 Scale World Champion ships first Canada conducted Red Deer Alberta between Calgary Ed monston meet expected RC Scale competition second offer Belgium proposes meet held Genk Gent include both RC F4C CL F4B Scale RC Soaring/Blakeslee Continued page 49 An explanation rules appeared re cent edition SBSS newsletter Silent Flier piece written Preben Norholm goes F3F Slope Racing rules use pilot stands center 330-ft 100meter course After launch pilot has 30 sec onds get plane Onto course Ten laps timed winner round re ceives 1000 pointsand yes its exactly like F3B Speed task contest has minimum five rounds maximum 10 throw-out round Its very simple CD infinitely difficult competitor Top speeds good weather range 50 60 seconds best performance North Sea Cup 454 seconds 22-mph wind wind direction 200 side Danish record 403 sec 40-mph wind typical Danish Slope Racer has twist-wings roll flaps coupled elevator no brakes Wingspans average eight 85 ft use modi fied Eppler 180 374 alrfoils E374 thinned 85% 10% reflex top E180 often flattened popular airfoil used Denmark Thy Combination E180 root E374 tips thinned 10% Turn ing techniques less ballast name Speed game race highest winds 13 15 oz per sq ft unballasted 18 20 oz per sq ft ballasted Jerry Arana nine SBSS fliers mentioned earlier successful Slope Racers California During 1987 Nats Lincoln NE talked Jerry about F3F Jerry said didnt like idea flying plane time Hed rather race four planes time take chances midairs because like real air racing certainly agree Jerry multiplane racingwith too infrequent spectacular collisionis exciting especially spectators after talking Preben can appreciate decided go one-at-a-time Top F3F planes sophisticated expen sive modern F3B ships Furthermore fast est slot slope just off brow ridge really competitive pilots would want fly exactly narrow groove max imum airspeed results would unaccept ably expensive have mentioned newsletter F3B/USA previous columns available anyone enters $20 entry fee shows intent enter $5 pre-entry fee 1989 US FAI RC Soaring team selection program will put mailing list program participants will re ceive newsletter send appropri ate fee AMA HQ Attention Micheline Madi son newsletter being produced trial basis disseminate FM Soaring information interested F3B team selection pro gram want reproduce article recent first issue F3B/USA written John Wyss subject wood wing skins example kind useful information newsletter builders out looking material/technique very fast build ex tremely strong rivals Hans Muellers furniture-quality wings veneer avail able works great Flexable Handiwood name product veneer laminate VINTAGE -C ILAN 7ISOLIDATEC PBY-5A CATALINA 9ET WING SPAN ALL RIBS 8 FULL FaRMERS SHOWN ON EIC ERG COWLS $1090 PR CLtAR GUN BLISTERS $760 PR 4 LARGE PLAN SHEETS s $ 1895 6FT WING SPAN MODEL PSY-SA ENGINE COWLS $750 PR Plans $1495 GUN BLISTERS $550 PR ADD $300 POSTAGE CATALOG-OVER SOPLANS $100 DEALERS WRITE WORLD 0 WIDE SID MORGAN 13157 ORMOND BELLE VALLE MICH 48111 USi consisting thin layer wood bonded pa per backing wood approximately %5-in thick paper either five 10 mils thick have tried five-mil material total thickness 00217 approximately 6 large selection wood types avail able have used pine mahogany success fully material comes sheets like ordinary plywood 4 x 8 ft can rolled ship ment UPS 4 x 8 sheet mahogany weighs 44 oz works out 138 oz per sq ft too heavy F3B Cross-Country designs recommended floaters use material first prepare extruded styrofoam blue foam spars servo wires joiners installed Save material trimmed off use beds laminating process next steps sure core chord % bed width provide support trailing edge trailing edge should cut sanded sharp attach skin core place layer 37-oz S-type glass cloth paper side skin squeegee Safe-T-Poxy cloth until evenly saturated Im careful use too much epoxy place core tween two wet skins core beds pin through skin/cores beds ends nothing will shift clamp whole thing together place clamps vacuum bag should work fine epoxy cured trim sand trailing edge sharp add spruce leading edge Sanding skin lightly done No 600 sandpaper final step spray clear wood finish little extra-fine steel wool gives great finish flaps ailerons cut free after wing has finish coated Stabs can made using veneer epoxied blue foam glass cloth strong Flexable Hondi wood may obtained local wood specialty outlet available Consolidated Hardwoods 7380 West 119th Ave Broomfield CO 80020 companys phone 303 466-1839 would good thing call prices shipping informa tion youre going order direct material costs about $60 per sheet FOB News Dodgson skunk works Bob Dodgson wrote let us know about new Super Windsong has developed what Ill call temporary basis until Bob comes up its official name Bobs objective strengthen Windsongs construction neednt worry about bending wing strong zoom launch bringing flap/aileron flutter during fast dive regular Wind140 Model Aviation
Edition: Model Aviation - 1988/07
Page Numbers: 46, 47, 135, 138, 140
EAA Model Show After observing years mall shows have found perfect environ ment model aircraft show March 20 1988 attended first annual EAA Air Ad venture Museum Model Aircraft Show Witt man Field Oshkosh WI event co sponsored FAA two local clubs Winne bago RC Fliers Valley Aero Modelers Show managers EAA Education Director Chuck Larsen Museum Director Carl Swick ley vast museum building due further en largement before next show has no space shortage Polished floors sparkling airplane displays accented models surrounded air craft wide variety Wright Flier rep lica duplicate Voyager fuselage empha sis history home-built types Interspersed among museum aircraft 95 models ranging rubber-powered Scale Giants Military types displayed museums Warbird section racing airplanes Travelair Mystery Ship Laird Super Solu tion Wittman Bonzo Models classic era shown company Lockheed Vega Beechcraft Staggerwing Ryan NYP Seaplanes sheltered under wing Si korsky Amphibion Popular balloting decided winners three competition categories Flying Scale nonflying Scale flying sport Modelers displayed aircraft given colored ballots dis tinguishable ballots regular museum visitors counted five Prizes flight line passea EAA Convention July merchandise museum eift shon Although local publicity show large Sunday afternoon crowd laid rest doubts about success being measured number spectators An unexpected prob lem lack space museums large park ing lot cars spilled over onto wellkept lawns good fortune frozen recent cold weather could have largest Sunday crowd except Conven tion weekend Organizers currently thinking next years show aod asking format sugges tions Also being considered Scale rally prob ably scheduled August after FAA Convention would flown Pioneer Airport located directly adjacent museum Several large hangars field stuffed overflow aircraft th m,,m incl,dmo Models displayed throughout EAA Air Adventure Museums first annual Model Aircraft Show Warbird types 1 pictured Grumman FSF Bearcat Civil aircraft models R shown under wings historic full-size types such easily recognized trio L-R Ryan NYP replica Beechcraft Staggerwing Lockheed Vega Posed antiques EAA Museum Don Klapsteins Moraine Saulnier 1 WW i-type spans 82-in weighs 625 lb uses Enya 60 power Nearby Bob Radtkes DH Tiger Moth R quarter-scale weighs 18 lb began life Barkiay kit Power OPS 1 8-cu-in two-stroke engine Finish Sig Koverail nitrate dope K&B epoxy 46 Model Aviation Radio Contrd Scale Bob Dolly Wischer S-221 Lapham Peak Rd Delafleld WI 53018 Jim Gilgenbachs Convair XF2Y-1 Sea Dart ducted fan model displayed simulated shore line EAA Museum Engine OS 77 Dynamax fan unit models con struction includes balsa plywood foam fiberglass Keviar carbon fiber Finish K&B epoxy prize-winner Oshkosh model showdeservedly rare antiques classics both military civil Having hangars open modelers would notable incentive attract Scale enthusihsts know modelers have spired build airplanes after visit collec tion classics antiques Hole cutter May column brief mention making instrument panel sheet styrene plastic Punching smooth round hole styrene can somewhat frustrat ing elaborate panel may have up dozen Alignment holes best appear ance another problem An adjustable tool job cancels frustrations cutting point tool seen photo sharp blade intended use draftsmans compass Its cylindrical di mensioned fit place pencil lead se cured same screw would hold lead cutter end blade thin sharp penetrate minimum displacement mater ial tried cut styrene using blade compass extremely difficult control cutting through anything thicker paContinued page 135 DISTRIBUTED BY RED ff9 1*598 o soa Gabriel Road ero CA 93422 i~-1717 * * Long Engine Life * * Use BRU LINE Air Cleaner Completely Fuel Proof Nylon Rubber Parts Cat No 102 Air Cleaner Coarse Cat No 202 Air Cleaner Fine Replacement Inserts Cat No 104 PkI2 Inserts Coarse Cat No 204 PkI2 Inserts Fine FITS MOST ENGINES 25and UP SEE YOUR LOCAL HOBBY DEALER $225 $225 $195 $195 IF UNAVAILABLE LOCALLY SEND TO Add 75 shippingMichigan residents add 4% sales tax Bru Line Industries Inc PO Box 3786 Center Line Michigan 48015 July 1988 47 V Heres Wlschers really indispens able homemade tools circle cutter use styrene plastic balsa tell its tory make yourself column month Use drill press AVAILABLE AT AMERICAS FINEST HOBBY SHOPS around country interested will International Slope Race held Denmark sometime 1989 number fliers west coast have expressed interest competing inter ested going spectator compet itor contact will let know can get some info F3F rules provide disci plined certainly organized form slope competition lacks excitement true race US Britain races head-to-head compe titions between numerous fliers two five determined number laps usu ally 8 10 over closed course 400 500 ft results truly exciting form competition both competitors spectators Midairs inevitable type racing usually re sult careless over-exuberant flying can avoided cases happens experienced fliers say thats just part racing new trend slope racing starting appear trend toward smaller Sailplanes can fly considerably lighter winds considerably less expensive Unlimited-type racer FM limits Unlimited Class Racing allow wing load ings up 254 ozIsq ft results very large three meters very expensive Sailplanes race held California about month ago 1 A-meter Sailplanes what have heard very successful equally exciting standard racing conditions fairly light because lightness planes still possi ble hold competition really believe aspect slope racing can ex pand popularity certainly good way beginning racer gain some ex perience type flying mini mal investment Sailplane appeared bestof-class event Nisus designed Mark Allen features truly gorgeous fiberglass fuselage foam wings obechi veneer sheeting outstand ing performance have opportu nity fly yet have flown have truly impressed Right now have details its availa bility time article printed kits should market Another form competition slope com bat recently chance watch dem onstration slope combat would like share what learned con cept originally started out attempt pilot cut ribbon trailing other Sailplane may started out what has evolved allout take-no-prisoners form destruction derby procedure quite simple Everyone launches last remain ing air winner reality tempt knock everybody elses Sailplane out air incurring least amount damage own plane knocked down have three minutes repair plane get airborne pop ular technique center-punch other plane approaching behind higher speed climbing above imple menting split-S Visualize am sure can see its effectiveness type competition undeniably brutal everyone especially like fly Sailplanes once number kits being developed just type competition such Cheetah num ber power scale slope planes want emphasize type flying should done volunteer basis go out center-punch someones $600 ASW DG definitely asking trouble Something would like column feature Sailplane kit slope fliers out can get good idea just what available Any sug gestions Sailplanes think truly outstanding deserve shared other fliers would greatly appreci ated months Sailplane Scimitar Designed yours truly available through Aero-Mark Designs Scimitar versatile multitask Sailplane ideal thermal slope competition Without aile rons flaps drag-producing hinge lines accompany Scimitars wing visually aerodynamically clean quality achievable because novative wingevatoron control system wings pivoting control both pitch roll Scimitar exemplifies latest RC Sailplane design Sales pitch aside Scimitar truly outstanding Sail plane very smooth stable respon sive Construction Scimitar pretty simple fuselage fairly straightfor ward box construction wings builtup fully sheeted tail balsa sheeting Despite simplicity construc tion very strong can hold up 2 lb ballast strong winds Kits avail able directly $75 plus $8 shipping Thats about month hope will receiving lots stories photos ideas fellow Slopers out RC Scale/Wischers Continued page 47 per styrene blade has rigidly mounted controlled cant wander off its circular path solution problem construct homemade tool carrier clamped cutter end bar using setscrew bar alu minum could made either brass steel too having rectangular cross section about 375 has slot adjustment cen ter post bars slot made milling cutter could made drilling row closely spaced holes grinding out interven ing material rattail file slot dimen sioned fit 10-32 thread brass steel center post having diame ter about 375 turned down Continued page 138 II THE LEADER IN COMPETITION DIA 13 14 15 16 PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10 TO 20% INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534 634 72833/456 8334568 8Ia4566/27 94566/77/ 1045667 106W8W 10SEW Ii 46777A78 ii 5W Ii 6EW 1167 12 4W 12 5W 12 56 13 56 14 56 15 56 16 4/N 16 678 RC PYLON RACING SERIES 500 DIA PITCHPRICE 7 5N5N 8I 6778 SERIES 400C 86677/7 977A7 W WIDE BLADE EW EXTRA WIDE N MAAAAW July 1988 135 PROPELLERS SERIES lUll THP DESIGN TAILORED HELICAL PITCH DEVELOPED TO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP PRICE 6677A8 677/ 8 6778 67 678 NEW FULL BODY PILOT KIT Contains pilot head hands boots helmet cap goggles tult templates easy instruc tions Easy assemble finish Some simple sewing required Fully positionable too Price #2061/ scale895 #205-A scale ..995 #204-A scale .. 1095 #203-% scale .. 1695 DARNED GOOD AIRMEN Lightest pilots available Lifelike vinyl latex rubber Build Sportsman Barnstormer Full Body Bust YYY BUST PILOT KIT Contains pilot head helmet sport cap goggles lacket Easy assemble tinish j PrIC #lO81/e scale NEW #106- scale #lOS/s scale #104- scale #103- scale simple sewing required JET PILOT KIT Pilot has molded jet helmet Contains tace mask oxygen hose Entreme ly Realistic Weighs less 1/2 oz Price #3081/ scale595 #307- scale695 ORDERING INSTRUCTIONS See dealer first order direct Add $100 shipping NYS residents add 7% tax Send check money order CODS OK Send $100 catalog See Dealer add Dollar direct order handling end threaded 10-32 could also have made 10-32 machine screw nut above below bar None machining dimensions need exact Only operation demands precision drilling 062-in-diameter hole end poston exact centerfor short length music wire pressed soldered hole music wire pilot hold cutter centered over spot instru ment going located panel styrene panel cut shape cen ter of instrument holes drilled 062-in hole guide tools pilot soft wood backup block also has 062-in-diameter hole drilled pilot use tool mounting drill press spindle speed press adjusted slow possible cutter gently lowered styrene avoid heating cutter tip cutter tip got too hot would melt its way through panel would enlarge hole leave rough edges cutter will break through styrene few secondsa situation indicated cutout disc styrene beginning rotate take care avoid pressing cut ter wood block hard material shortens its life rapidly have found other uses homemade hole cutter can used produce clean light ening holes balsa parts such large wing ribs fuselage sides have also used holes /32 / plywood although thicker mate rial can rather abusive cutters sharp point However points very easily sharp ened oil stone using same technlque worn X-Acto blade cutting holes balsa pilot holes arent needed music wire sharpened point perfectly centered point can formed hold ing against Dremel cutoff disc rotating post drill press point will penetrate balsa effort point doesnt work too well styrene drilled holes pre ferred accurate location Its great feeling make panel multi ple holes exact location have right first attempt hole smoothly cut re quiring no subsequent touch-up hand tools homemade cutting tool has used models over period 20 years sharpening can remembered very small instrument panel holes below diameter 375 sharpen end brass steel tube appropriate diameter Mount tube drill press chuck use low est speed available spin tube through styrene overheating Brass tube must sharpened quite frequently Similar tubular hole cutters X-Acto made hardened steel have found two diame ters 187 437 Some tools have long-term usage ultimate crudity bending tubing have series wood dowels ranging diam eter % 1 grooved closely fit various sizes brass aluminum tubing tube material first softened nealing heatuse kitchen stove suffic es tube can wrapped around dow el confined groove produce angle bend desired distortion kinking tube confined within close-fitting groove avoid flattening would other wise occur during bending operation ad vantage scheme very small bend ra diuses can obtained tube material comes work-hardened before bend complete reanneal heat Steel tube much difficult work simple grooved wood dowel wont job Steel tube must confined closely sides point being formed order avoid distor tion Scale colors Reproducing colors Scale mod els exact shades has always subject contention contest judges expect some sort proof models colors precisely prototype modeler obligated prove choice colors correctnearly impossible obscure aircraft one-of-a-kind class antiques classics military prototypes might say lack color information makes types poor choice subject Another opimon modelers choice should unlimited rules bent accom modate subjects difficult document respect color authenticity latest list FAI rules-change suggestions contains proposal UK source seems make good sense Under heading Judging Fidelity Scale Craftsman ship list items judged dividual basis K-factors weight im portance lowest K-factor six classifications color marking surface texture proposal suggests reducing color K-factor three order alter its importance drastically reason change given follows Actual color difficult prove creates doc umentation problem both competitors judges Color photographs vary depending lighting conditions weather prevailing time Printed matter frequently inaccurate written descriptions vague line reasonlng would like add experience color negatives sent lo cal processors prints seldom given same treatment two successive printings would like exact color renditions prints almost never really satisfied average person may perfectly happy ap proximate colors Scale modeler has special requirements accuracy rarely present finlahed prints Both modelers judges divided opin ion what constitutes satisfactory documen tation color Some prefer color swatches fabric paint chips prototype Others satisfied color drawing Profile publication though printers selection ink color may doubtful accuracy prob lem arises competitor judge have con flicting opinions proposal England went suggest emphasis should placed surface texture changing its title Surface Texture Realism changing K-factor six eight further proposed increase Kfactor Surface Detail seven eight order sufficiently reward models complex aircraft changing two K-factors up ward proposal compensates loss three points color K-factor maintain pre vious mathematical balance total 65 judging factors increase award surface detail has subject controversy past several years because drastic reduction flight bo nus points awarded models complex proto types has suggested insuffi cient credit given modeler expends great effort complex model classic example given situation model extremely well executed last detail present externally internallybut prototype absolutely simple airplane devoid detail An example model ultralight airplane can built light fly extremely well also rates high static scoring because its faithful reproduction prototype no detail mimmum finlsh easily reproduced shape proposal effort strike balance tween models simple complex aircraft provide equal chance win As presently written rules favor simple mod el Inequalities judging standards combined some natural bias has always made competi tion distasteful some modelers Writing rules 138 Model Aviation RC Scale/Wischers Continued page 135 maintain balance may bring some Scale modelers contests Rules fit wide van ety models havent successfully formu lated past possible have doubts Proposals have also made change judges guide FAI rule book emphasize importance color scale detail mark ings proposal requests addition fol lowing paragraphs Consideration should given greater effort involved reproducing multicolored fin ishes difficult shades simulate pol ished metal etc compared model features two basic colors Marks awarded would reflect degree complexity color marks awarded should take account both accuracy complexity mark ings prototype marks awarded should reflect both ac curacy quantity scale detail present well-documented highly detailed model should score proportionately higher model little detail though full-size proto type latter has few visible details Future Scale World Championships FAI Committee International Aeromodeling ClAM now has two offers national aero clubs host 1990 Scale World Champion ships first Canada conducted Red Deer Alberta between Calgary Ed monston meet expected RC Scale competition second offer Belgium proposes meet held Genk Gent include both RC F4C CL F4B Scale RC Soaring/Blakeslee Continued page 49 An explanation rules appeared re cent edition SBSS newsletter Silent Flier piece written Preben Norholm goes F3F Slope Racing rules use pilot stands center 330-ft 100meter course After launch pilot has 30 sec onds get plane Onto course Ten laps timed winner round re ceives 1000 pointsand yes its exactly like F3B Speed task contest has minimum five rounds maximum 10 throw-out round Its very simple CD infinitely difficult competitor Top speeds good weather range 50 60 seconds best performance North Sea Cup 454 seconds 22-mph wind wind direction 200 side Danish record 403 sec 40-mph wind typical Danish Slope Racer has twist-wings roll flaps coupled elevator no brakes Wingspans average eight 85 ft use modi fied Eppler 180 374 alrfoils E374 thinned 85% 10% reflex top E180 often flattened popular airfoil used Denmark Thy Combination E180 root E374 tips thinned 10% Turn ing techniques less ballast name Speed game race highest winds 13 15 oz per sq ft unballasted 18 20 oz per sq ft ballasted Jerry Arana nine SBSS fliers mentioned earlier successful Slope Racers California During 1987 Nats Lincoln NE talked Jerry about F3F Jerry said didnt like idea flying plane time Hed rather race four planes time take chances midairs because like real air racing certainly agree Jerry multiplane racingwith too infrequent spectacular collisionis exciting especially spectators after talking Preben can appreciate decided go one-at-a-time Top F3F planes sophisticated expen sive modern F3B ships Furthermore fast est slot slope just off brow ridge really competitive pilots would want fly exactly narrow groove max imum airspeed results would unaccept ably expensive have mentioned newsletter F3B/USA previous columns available anyone enters $20 entry fee shows intent enter $5 pre-entry fee 1989 US FAI RC Soaring team selection program will put mailing list program participants will re ceive newsletter send appropri ate fee AMA HQ Attention Micheline Madi son newsletter being produced trial basis disseminate FM Soaring information interested F3B team selection pro gram want reproduce article recent first issue F3B/USA written John Wyss subject wood wing skins example kind useful information newsletter builders out looking material/technique very fast build ex tremely strong rivals Hans Muellers furniture-quality wings veneer avail able works great Flexable Handiwood name product veneer laminate VINTAGE -C ILAN 7ISOLIDATEC PBY-5A CATALINA 9ET WING SPAN ALL RIBS 8 FULL FaRMERS SHOWN ON EIC ERG COWLS $1090 PR CLtAR GUN BLISTERS $760 PR 4 LARGE PLAN SHEETS s $ 1895 6FT WING SPAN MODEL PSY-SA ENGINE COWLS $750 PR Plans $1495 GUN BLISTERS $550 PR ADD $300 POSTAGE CATALOG-OVER SOPLANS $100 DEALERS WRITE WORLD 0 WIDE SID MORGAN 13157 ORMOND BELLE VALLE MICH 48111 USi consisting thin layer wood bonded pa per backing wood approximately %5-in thick paper either five 10 mils thick have tried five-mil material total thickness 00217 approximately 6 large selection wood types avail able have used pine mahogany success fully material comes sheets like ordinary plywood 4 x 8 ft can rolled ship ment UPS 4 x 8 sheet mahogany weighs 44 oz works out 138 oz per sq ft too heavy F3B Cross-Country designs recommended floaters use material first prepare extruded styrofoam blue foam spars servo wires joiners installed Save material trimmed off use beds laminating process next steps sure core chord % bed width provide support trailing edge trailing edge should cut sanded sharp attach skin core place layer 37-oz S-type glass cloth paper side skin squeegee Safe-T-Poxy cloth until evenly saturated Im careful use too much epoxy place core tween two wet skins core beds pin through skin/cores beds ends nothing will shift clamp whole thing together place clamps vacuum bag should work fine epoxy cured trim sand trailing edge sharp add spruce leading edge Sanding skin lightly done No 600 sandpaper final step spray clear wood finish little extra-fine steel wool gives great finish flaps ailerons cut free after wing has finish coated Stabs can made using veneer epoxied blue foam glass cloth strong Flexable Hondi wood may obtained local wood specialty outlet available Consolidated Hardwoods 7380 West 119th Ave Broomfield CO 80020 companys phone 303 466-1839 would good thing call prices shipping informa tion youre going order direct material costs about $60 per sheet FOB News Dodgson skunk works Bob Dodgson wrote let us know about new Super Windsong has developed what Ill call temporary basis until Bob comes up its official name Bobs objective strengthen Windsongs construction neednt worry about bending wing strong zoom launch bringing flap/aileron flutter during fast dive regular Wind140 Model Aviation
Edition: Model Aviation - 1988/07
Page Numbers: 46, 47, 135, 138, 140
EAA Model Show After observing years mall shows have found perfect environ ment model aircraft show March 20 1988 attended first annual EAA Air Ad venture Museum Model Aircraft Show Witt man Field Oshkosh WI event co sponsored FAA two local clubs Winne bago RC Fliers Valley Aero Modelers Show managers EAA Education Director Chuck Larsen Museum Director Carl Swick ley vast museum building due further en largement before next show has no space shortage Polished floors sparkling airplane displays accented models surrounded air craft wide variety Wright Flier rep lica duplicate Voyager fuselage empha sis history home-built types Interspersed among museum aircraft 95 models ranging rubber-powered Scale Giants Military types displayed museums Warbird section racing airplanes Travelair Mystery Ship Laird Super Solu tion Wittman Bonzo Models classic era shown company Lockheed Vega Beechcraft Staggerwing Ryan NYP Seaplanes sheltered under wing Si korsky Amphibion Popular balloting decided winners three competition categories Flying Scale nonflying Scale flying sport Modelers displayed aircraft given colored ballots dis tinguishable ballots regular museum visitors counted five Prizes flight line passea EAA Convention July merchandise museum eift shon Although local publicity show large Sunday afternoon crowd laid rest doubts about success being measured number spectators An unexpected prob lem lack space museums large park ing lot cars spilled over onto wellkept lawns good fortune frozen recent cold weather could have largest Sunday crowd except Conven tion weekend Organizers currently thinking next years show aod asking format sugges tions Also being considered Scale rally prob ably scheduled August after FAA Convention would flown Pioneer Airport located directly adjacent museum Several large hangars field stuffed overflow aircraft th m,,m incl,dmo Models displayed throughout EAA Air Adventure Museums first annual Model Aircraft Show Warbird types 1 pictured Grumman FSF Bearcat Civil aircraft models R shown under wings historic full-size types such easily recognized trio L-R Ryan NYP replica Beechcraft Staggerwing Lockheed Vega Posed antiques EAA Museum Don Klapsteins Moraine Saulnier 1 WW i-type spans 82-in weighs 625 lb uses Enya 60 power Nearby Bob Radtkes DH Tiger Moth R quarter-scale weighs 18 lb began life Barkiay kit Power OPS 1 8-cu-in two-stroke engine Finish Sig Koverail nitrate dope K&B epoxy 46 Model Aviation Radio Contrd Scale Bob Dolly Wischer S-221 Lapham Peak Rd Delafleld WI 53018 Jim Gilgenbachs Convair XF2Y-1 Sea Dart ducted fan model displayed simulated shore line EAA Museum Engine OS 77 Dynamax fan unit models con struction includes balsa plywood foam fiberglass Keviar carbon fiber Finish K&B epoxy prize-winner Oshkosh model showdeservedly rare antiques classics both military civil Having hangars open modelers would notable incentive attract Scale enthusihsts know modelers have spired build airplanes after visit collec tion classics antiques Hole cutter May column brief mention making instrument panel sheet styrene plastic Punching smooth round hole styrene can somewhat frustrat ing elaborate panel may have up dozen Alignment holes best appear ance another problem An adjustable tool job cancels frustrations cutting point tool seen photo sharp blade intended use draftsmans compass Its cylindrical di mensioned fit place pencil lead se cured same screw would hold lead cutter end blade thin sharp penetrate minimum displacement mater ial tried cut styrene using blade compass extremely difficult control cutting through anything thicker paContinued page 135 DISTRIBUTED BY RED ff9 1*598 o soa Gabriel Road ero CA 93422 i~-1717 * * Long Engine Life * * Use BRU LINE Air Cleaner Completely Fuel Proof Nylon Rubber Parts Cat No 102 Air Cleaner Coarse Cat No 202 Air Cleaner Fine Replacement Inserts Cat No 104 PkI2 Inserts Coarse Cat No 204 PkI2 Inserts Fine FITS MOST ENGINES 25and UP SEE YOUR LOCAL HOBBY DEALER $225 $225 $195 $195 IF UNAVAILABLE LOCALLY SEND TO Add 75 shippingMichigan residents add 4% sales tax Bru Line Industries Inc PO Box 3786 Center Line Michigan 48015 July 1988 47 V Heres Wlschers really indispens able homemade tools circle cutter use styrene plastic balsa tell its tory make yourself column month Use drill press AVAILABLE AT AMERICAS FINEST HOBBY SHOPS around country interested will International Slope Race held Denmark sometime 1989 number fliers west coast have expressed interest competing inter ested going spectator compet itor contact will let know can get some info F3F rules provide disci plined certainly organized form slope competition lacks excitement true race US Britain races head-to-head compe titions between numerous fliers two five determined number laps usu ally 8 10 over closed course 400 500 ft results truly exciting form competition both competitors spectators Midairs inevitable type racing usually re sult careless over-exuberant flying can avoided cases happens experienced fliers say thats just part racing new trend slope racing starting appear trend toward smaller Sailplanes can fly considerably lighter winds considerably less expensive Unlimited-type racer FM limits Unlimited Class Racing allow wing load ings up 254 ozIsq ft results very large three meters very expensive Sailplanes race held California about month ago 1 A-meter Sailplanes what have heard very successful equally exciting standard racing conditions fairly light because lightness planes still possi ble hold competition really believe aspect slope racing can ex pand popularity certainly good way beginning racer gain some ex perience type flying mini mal investment Sailplane appeared bestof-class event Nisus designed Mark Allen features truly gorgeous fiberglass fuselage foam wings obechi veneer sheeting outstand ing performance have opportu nity fly yet have flown have truly impressed Right now have details its availa bility time article printed kits should market Another form competition slope com bat recently chance watch dem onstration slope combat would like share what learned con cept originally started out attempt pilot cut ribbon trailing other Sailplane may started out what has evolved allout take-no-prisoners form destruction derby procedure quite simple Everyone launches last remain ing air winner reality tempt knock everybody elses Sailplane out air incurring least amount damage own plane knocked down have three minutes repair plane get airborne pop ular technique center-punch other plane approaching behind higher speed climbing above imple menting split-S Visualize am sure can see its effectiveness type competition undeniably brutal everyone especially like fly Sailplanes once number kits being developed just type competition such Cheetah num ber power scale slope planes want emphasize type flying should done volunteer basis go out center-punch someones $600 ASW DG definitely asking trouble Something would like column feature Sailplane kit slope fliers out can get good idea just what available Any sug gestions Sailplanes think truly outstanding deserve shared other fliers would greatly appreci ated months Sailplane Scimitar Designed yours truly available through Aero-Mark Designs Scimitar versatile multitask Sailplane ideal thermal slope competition Without aile rons flaps drag-producing hinge lines accompany Scimitars wing visually aerodynamically clean quality achievable because novative wingevatoron control system wings pivoting control both pitch roll Scimitar exemplifies latest RC Sailplane design Sales pitch aside Scimitar truly outstanding Sail plane very smooth stable respon sive Construction Scimitar pretty simple fuselage fairly straightfor ward box construction wings builtup fully sheeted tail balsa sheeting Despite simplicity construc tion very strong can hold up 2 lb ballast strong winds Kits avail able directly $75 plus $8 shipping Thats about month hope will receiving lots stories photos ideas fellow Slopers out RC Scale/Wischers Continued page 47 per styrene blade has rigidly mounted controlled cant wander off its circular path solution problem construct homemade tool carrier clamped cutter end bar using setscrew bar alu minum could made either brass steel too having rectangular cross section about 375 has slot adjustment cen ter post bars slot made milling cutter could made drilling row closely spaced holes grinding out interven ing material rattail file slot dimen sioned fit 10-32 thread brass steel center post having diame ter about 375 turned down Continued page 138 II THE LEADER IN COMPETITION DIA 13 14 15 16 PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10 TO 20% INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534 634 72833/456 8334568 8Ia4566/27 94566/77/ 1045667 106W8W 10SEW Ii 46777A78 ii 5W Ii 6EW 1167 12 4W 12 5W 12 56 13 56 14 56 15 56 16 4/N 16 678 RC PYLON RACING SERIES 500 DIA PITCHPRICE 7 5N5N 8I 6778 SERIES 400C 86677/7 977A7 W WIDE BLADE EW EXTRA WIDE N MAAAAW July 1988 135 PROPELLERS SERIES lUll THP DESIGN TAILORED HELICAL PITCH DEVELOPED TO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP PRICE 6677A8 677/ 8 6778 67 678 NEW FULL BODY PILOT KIT Contains pilot head hands boots helmet cap goggles tult templates easy instruc tions Easy assemble finish Some simple sewing required Fully positionable too Price #2061/ scale895 #205-A scale ..995 #204-A scale .. 1095 #203-% scale .. 1695 DARNED GOOD AIRMEN Lightest pilots available Lifelike vinyl latex rubber Build Sportsman Barnstormer Full Body Bust YYY BUST PILOT KIT Contains pilot head helmet sport cap goggles lacket Easy assemble tinish j PrIC #lO81/e scale NEW #106- scale #lOS/s scale #104- scale #103- scale simple sewing required JET PILOT KIT Pilot has molded jet helmet Contains tace mask oxygen hose Entreme ly Realistic Weighs less 1/2 oz Price #3081/ scale595 #307- scale695 ORDERING INSTRUCTIONS See dealer first order direct Add $100 shipping NYS residents add 7% tax Send check money order CODS OK Send $100 catalog See Dealer add Dollar direct order handling end threaded 10-32 could also have made 10-32 machine screw nut above below bar None machining dimensions need exact Only operation demands precision drilling 062-in-diameter hole end poston exact centerfor short length music wire pressed soldered hole music wire pilot hold cutter centered over spot instru ment going located panel styrene panel cut shape cen ter of instrument holes drilled 062-in hole guide tools pilot soft wood backup block also has 062-in-diameter hole drilled pilot use tool mounting drill press spindle speed press adjusted slow possible cutter gently lowered styrene avoid heating cutter tip cutter tip got too hot would melt its way through panel would enlarge hole leave rough edges cutter will break through styrene few secondsa situation indicated cutout disc styrene beginning rotate take care avoid pressing cut ter wood block hard material shortens its life rapidly have found other uses homemade hole cutter can used produce clean light ening holes balsa parts such large wing ribs fuselage sides have also used holes /32 / plywood although thicker mate rial can rather abusive cutters sharp point However points very easily sharp ened oil stone using same technlque worn X-Acto blade cutting holes balsa pilot holes arent needed music wire sharpened point perfectly centered point can formed hold ing against Dremel cutoff disc rotating post drill press point will penetrate balsa effort point doesnt work too well styrene drilled holes pre ferred accurate location Its great feeling make panel multi ple holes exact location have right first attempt hole smoothly cut re quiring no subsequent touch-up hand tools homemade cutting tool has used models over period 20 years sharpening can remembered very small instrument panel holes below diameter 375 sharpen end brass steel tube appropriate diameter Mount tube drill press chuck use low est speed available spin tube through styrene overheating Brass tube must sharpened quite frequently Similar tubular hole cutters X-Acto made hardened steel have found two diame ters 187 437 Some tools have long-term usage ultimate crudity bending tubing have series wood dowels ranging diam eter % 1 grooved closely fit various sizes brass aluminum tubing tube material first softened nealing heatuse kitchen stove suffic es tube can wrapped around dow el confined groove produce angle bend desired distortion kinking tube confined within close-fitting groove avoid flattening would other wise occur during bending operation ad vantage scheme very small bend ra diuses can obtained tube material comes work-hardened before bend complete reanneal heat Steel tube much difficult work simple grooved wood dowel wont job Steel tube must confined closely sides point being formed order avoid distor tion Scale colors Reproducing colors Scale mod els exact shades has always subject contention contest judges expect some sort proof models colors precisely prototype modeler obligated prove choice colors correctnearly impossible obscure aircraft one-of-a-kind class antiques classics military prototypes might say lack color information makes types poor choice subject Another opimon modelers choice should unlimited rules bent accom modate subjects difficult document respect color authenticity latest list FAI rules-change suggestions contains proposal UK source seems make good sense Under heading Judging Fidelity Scale Craftsman ship list items judged dividual basis K-factors weight im portance lowest K-factor six classifications color marking surface texture proposal suggests reducing color K-factor three order alter its importance drastically reason change given follows Actual color difficult prove creates doc umentation problem both competitors judges Color photographs vary depending lighting conditions weather prevailing time Printed matter frequently inaccurate written descriptions vague line reasonlng would like add experience color negatives sent lo cal processors prints seldom given same treatment two successive printings would like exact color renditions prints almost never really satisfied average person may perfectly happy ap proximate colors Scale modeler has special requirements accuracy rarely present finlahed prints Both modelers judges divided opin ion what constitutes satisfactory documen tation color Some prefer color swatches fabric paint chips prototype Others satisfied color drawing Profile publication though printers selection ink color may doubtful accuracy prob lem arises competitor judge have con flicting opinions proposal England went suggest emphasis should placed surface texture changing its title Surface Texture Realism changing K-factor six eight further proposed increase Kfactor Surface Detail seven eight order sufficiently reward models complex aircraft changing two K-factors up ward proposal compensates loss three points color K-factor maintain pre vious mathematical balance total 65 judging factors increase award surface detail has subject controversy past several years because drastic reduction flight bo nus points awarded models complex proto types has suggested insuffi cient credit given modeler expends great effort complex model classic example given situation model extremely well executed last detail present externally internallybut prototype absolutely simple airplane devoid detail An example model ultralight airplane can built light fly extremely well also rates high static scoring because its faithful reproduction prototype no detail mimmum finlsh easily reproduced shape proposal effort strike balance tween models simple complex aircraft provide equal chance win As presently written rules favor simple mod el Inequalities judging standards combined some natural bias has always made competi tion distasteful some modelers Writing rules 138 Model Aviation RC Scale/Wischers Continued page 135 maintain balance may bring some Scale modelers contests Rules fit wide van ety models havent successfully formu lated past possible have doubts Proposals have also made change judges guide FAI rule book emphasize importance color scale detail mark ings proposal requests addition fol lowing paragraphs Consideration should given greater effort involved reproducing multicolored fin ishes difficult shades simulate pol ished metal etc compared model features two basic colors Marks awarded would reflect degree complexity color marks awarded should take account both accuracy complexity mark ings prototype marks awarded should reflect both ac curacy quantity scale detail present well-documented highly detailed model should score proportionately higher model little detail though full-size proto type latter has few visible details Future Scale World Championships FAI Committee International Aeromodeling ClAM now has two offers national aero clubs host 1990 Scale World Champion ships first Canada conducted Red Deer Alberta between Calgary Ed monston meet expected RC Scale competition second offer Belgium proposes meet held Genk Gent include both RC F4C CL F4B Scale RC Soaring/Blakeslee Continued page 49 An explanation rules appeared re cent edition SBSS newsletter Silent Flier piece written Preben Norholm goes F3F Slope Racing rules use pilot stands center 330-ft 100meter course After launch pilot has 30 sec onds get plane Onto course Ten laps timed winner round re ceives 1000 pointsand yes its exactly like F3B Speed task contest has minimum five rounds maximum 10 throw-out round Its very simple CD infinitely difficult competitor Top speeds good weather range 50 60 seconds best performance North Sea Cup 454 seconds 22-mph wind wind direction 200 side Danish record 403 sec 40-mph wind typical Danish Slope Racer has twist-wings roll flaps coupled elevator no brakes Wingspans average eight 85 ft use modi fied Eppler 180 374 alrfoils E374 thinned 85% 10% reflex top E180 often flattened popular airfoil used Denmark Thy Combination E180 root E374 tips thinned 10% Turn ing techniques less ballast name Speed game race highest winds 13 15 oz per sq ft unballasted 18 20 oz per sq ft ballasted Jerry Arana nine SBSS fliers mentioned earlier successful Slope Racers California During 1987 Nats Lincoln NE talked Jerry about F3F Jerry said didnt like idea flying plane time Hed rather race four planes time take chances midairs because like real air racing certainly agree Jerry multiplane racingwith too infrequent spectacular collisionis exciting especially spectators after talking Preben can appreciate decided go one-at-a-time Top F3F planes sophisticated expen sive modern F3B ships Furthermore fast est slot slope just off brow ridge really competitive pilots would want fly exactly narrow groove max imum airspeed results would unaccept ably expensive have mentioned newsletter F3B/USA previous columns available anyone enters $20 entry fee shows intent enter $5 pre-entry fee 1989 US FAI RC Soaring team selection program will put mailing list program participants will re ceive newsletter send appropri ate fee AMA HQ Attention Micheline Madi son newsletter being produced trial basis disseminate FM Soaring information interested F3B team selection pro gram want reproduce article recent first issue F3B/USA written John Wyss subject wood wing skins example kind useful information newsletter builders out looking material/technique very fast build ex tremely strong rivals Hans Muellers furniture-quality wings veneer avail able works great Flexable Handiwood name product veneer laminate VINTAGE -C ILAN 7ISOLIDATEC PBY-5A CATALINA 9ET WING SPAN ALL RIBS 8 FULL FaRMERS SHOWN ON EIC ERG COWLS $1090 PR CLtAR GUN BLISTERS $760 PR 4 LARGE PLAN SHEETS s $ 1895 6FT WING SPAN MODEL PSY-SA ENGINE COWLS $750 PR Plans $1495 GUN BLISTERS $550 PR ADD $300 POSTAGE CATALOG-OVER SOPLANS $100 DEALERS WRITE WORLD 0 WIDE SID MORGAN 13157 ORMOND BELLE VALLE MICH 48111 USi consisting thin layer wood bonded pa per backing wood approximately %5-in thick paper either five 10 mils thick have tried five-mil material total thickness 00217 approximately 6 large selection wood types avail able have used pine mahogany success fully material comes sheets like ordinary plywood 4 x 8 ft can rolled ship ment UPS 4 x 8 sheet mahogany weighs 44 oz works out 138 oz per sq ft too heavy F3B Cross-Country designs recommended floaters use material first prepare extruded styrofoam blue foam spars servo wires joiners installed Save material trimmed off use beds laminating process next steps sure core chord % bed width provide support trailing edge trailing edge should cut sanded sharp attach skin core place layer 37-oz S-type glass cloth paper side skin squeegee Safe-T-Poxy cloth until evenly saturated Im careful use too much epoxy place core tween two wet skins core beds pin through skin/cores beds ends nothing will shift clamp whole thing together place clamps vacuum bag should work fine epoxy cured trim sand trailing edge sharp add spruce leading edge Sanding skin lightly done No 600 sandpaper final step spray clear wood finish little extra-fine steel wool gives great finish flaps ailerons cut free after wing has finish coated Stabs can made using veneer epoxied blue foam glass cloth strong Flexable Hondi wood may obtained local wood specialty outlet available Consolidated Hardwoods 7380 West 119th Ave Broomfield CO 80020 companys phone 303 466-1839 would good thing call prices shipping informa tion youre going order direct material costs about $60 per sheet FOB News Dodgson skunk works Bob Dodgson wrote let us know about new Super Windsong has developed what Ill call temporary basis until Bob comes up its official name Bobs objective strengthen Windsongs construction neednt worry about bending wing strong zoom launch bringing flap/aileron flutter during fast dive regular Wind140 Model Aviation