lying-wing aircraft have fascinated long time te young recall seeing large flying-wing bomber TV news 1K program probably covering cancellation Northrop XB-351YB-49 project brief glimpse such graceful aircraft has tayed 40 years As youngster played usual assortment airplanes gliders controlline airplanes simple RC models Fond memories persist father walking Tony Addie Naccaratos Hobby Lobby Burbank California coming out some kits single-channel RC gearfor about $100 Dont tell Mom much spent still recall father saying enjoyed hobby very much though flying success quite limited pursuit education earning living stepped took away hobby day few years ago ran copy book Flying Wings Northrop used bookstore details Northrop XB-35 propeller YB-49 jet flying-wing bombers remembered fascinated once again photographs cutaway drawings book sketched up some approximate dimensions toyed idea building model Maybe would fly Looking through some current model airplane magazines 44 Model Aviation trial-fit leading trailir Internal structure XB-35 Light weight paramount Most strength will come top bottom sheeting 46-ounce XB-35 powered four Silver Streak Electric motors turning Cox 5 x 35 three-blade pusher props Ileeting place covered up nz Top sheeting has completed Access limited motors mounted such can removed servicing Servo installation Rightmost servo has mixer attached Upper link left servo goes steering belicrank Note vents July1996 45 amazed advanced affordable RC equipment become continued look literature flying wings general XB-35 particular times felt remembered airplanes persistence uncovered several excellent publications able determine basic geometry airplane make good estimates some less-obvious parameters determined A2-scale model would smallest practical size would still have good flying characteristics could powered Electric motors felt would easier control gas engines Batteries would provide three five minutes flight Power takeoffs would adequate outstanding tried various motors propellers batteries before deciding proceed design settled included standard balsa-and-Lite Ply construction four Silver Streak motors PeckPolymers turning Cox 5 x 35 three-blade pusher propellers Futaba four-channel radio system speed control small servos Du-Bro V-tail mixer motors would wired parallel high-efficiency wire Sermos connectors would used six- sevencell 1 500-mAh battery pack would power everything wingspan slightly five feet set target weight 40 ounces hoped come under slightly optimistic final flying weight 46 ounces CONSTRUCTION wing built two halves joined middle balsa sheeting applied after halves joined motor mounts propeller-shaft support structures place allows easy access during alignment phase Because models symmetrical airfoil jig required build wing structure cannot lie flat workbench half wing flat root tip main spar has inflection rib 7 requires some extra care spar support elevations flat work surface shown table below elevation main spar rib 7 compensates inflection main spar T structure top bottom surfaces wing center portion made 2 balsa outer portion made 16 sure spars straight flat Pin piece work surface using straightedge guide vertical piece centered cyanoacrylate CyA glue used hold place forming shaped cross-section Attach spars work surface over plans supported elevations shown Supports several intermediate points will also help Spar Support Elevations LocationRootRib 7 Main Spar 00 0125 RearSpar1125075 Tip 00 01875 Cut ribs sheet balsa consistency put pattern inboard surface worthwhile mark top bottom left right pieces prevent confusion almostbut quitesymmetrical Cut main spar notches first place ribs jig locate rear spar location Because INTRODUCINO NFW" PRECISION PROP NUTS AND HUBS Now greater choice quality Tru-Turn products 3 sizes PROP NUTS ranging 5/8 7/8 diameter 2 shapes available stock RIG engine thread sizes 5 sizes PROP HUBS ranging 1 2 diameter 2 shapes new PROP NUTS PROP HUBS addition existing line precision aluminum spinners range 1-1/2 6 over 90 shapes sizes blade configurations new Tru-Turn PROP HUB line complimented extensive line over 70 adapter kits Tru-Turn makes adapter production RIG engine market have adapter problem. help phone call away. See hobby dealer call us direct. /IIZzJ7/TM Made n U S PRECISION MODEL PRODUCTS Romco Manufacturing Inc QUALITY VERSATILITY GREAT LOOKS TY PO Box 836 South Houston Texas 77587 713/ 943-1867 46 Model Aviation i w angles involved would difficult cut everything once maintain alignment spar notches place remove ribs form trim off portions leading trailing edges cut lightening holes Attach ribs bottom spars ribs need inclined 30 off vertical compensate dihedral angle bottom surface Use doubler rib 7 add strength inflection joint appears main spar ribs place top spars can added ribs attached spars leading trailing edges can added leading edge made 4 balsa Trial-fit pieces make sure ribs make firm contact Holding piece place mark top bottom points contacts rib Remove stock draw line root top contact points use guide trim excess material before glued place leading edge has large slot allow cooling air reach motors batteries speed control Cut slot before leading edge attached After glued place carefully trim material Remember structure fairly fragile before covered elevons built balsa similar procedure using leftover pieces ribs Use A6 plywood control horn Line up main wing locate hinge points Glue hinges elevons first used pin point hinges Carl Goldberg Models almost available hinge would work just well Cover elevons 1/32 balsa Sand shape Now elevon hinges can attached main wing use thick CyA epoxy thin CyA can wick hinge joint Elevon throw should 150 wing slots added next could find details used straight pieces 142 balsa sheet glued between ribs included appearance eieases 1995 Warbirds 95 & Birds Prey $1995 EACH S&1I SEND TO AMR PRODUCTIONS P0 BOX 1813 TOMS RIVER NJ 08754 GOT PROBLEM PAT 4221452 Re eta 3acA 1-SOFT MOUNTED ENGINESJLVE IT WITH WRECKING GLOW DRIVER 2-HARD TO GET AT PLUGHEAD 3LARGE/DEEP COWLING FITS ALL STANDARD PLUGS4FINGERS CLOSE TO PROP 5SCALE PROJEC NO HOR E Al OT E FROM K&B 2 STROKE TOHEAOLOCX GLOW DRIVER ENYA 4 STROKECdenct ST#021 SINGLE$995 ST#022 TWIN$1395 LOCK IF EYr AVAThAUZ $100 $200LB MODEL PRODUCTS CORPPO BOX 100 ALLAMUCHY NJ 07820908 850-1508 c4 Mills ls ] rIiITES Precision instruments I FREE COR CATALOG FREE CATALOGChoose over 200 exc t ng k tes LATIIESii unusual & nnovat ye des gns CAMPBELL TOOLS COI Call write catalog todayl 2100-M Selma RdI Wind l 541-0314 Spnngfield OH MA Pearl St Boulder CO 80302 513-3224502 1800 ruiter ordersl L rushless DC Motors & Dita1 d Controller Call 716-662-5651 Brochure & Oderfomi azecm Motors 57 Hawthorne Dr Orchard Park NY 14127 ction full-scale XB-35 used takeoff landings closed during normal flight know would effective model size motor mounts propeller-shaft housings built up 1/i6 plywood used ball bearings custom propeller adapters final shaft supports plywood nylon bearings would also work motor mounts constructed motors can removed servicing Align components best can before gluing place Misalignment can cause excessive vibration leading lack power eventual fatigue failures Spend little extra time balsa webbing between bottom propeller shaft supports trailing edge used absorb normal vibrations very important test-run motors support place next step join two wing halves main strength provided /16-plywood bulkhead main spar Balsa blocks top bottom used fill gaps between bulkhead spars Verify dihedral before gluing everything place Use slow-curing epoxy can adjust components necessary before adhesive sets two leading edges secured Aplywood strengthener 46-plywood rear bulkhead also holds servos Check servos fit properly mixer works before gluing things place Now can install elevon controls cables Secure cables ribs reduce slop improve control Attach main landing-gear support blocks steerable nose wheel support made /6 plywood A6 hole drilled through control cable also needs supported several places improve ground handling cover model build simple jig hold firmly center wingtips Note wing has 50 washout front wingtips point down slightly must built before covering added very OK Cub 049B Lug & radial mount Metal tank High RPM True Carburetion $14 EACH shpg per order 58 years OK engine history 80 page book Includes complete engine listings full color photos COLLECTOR EDITION $1195 p/p Set five color posters $15 year catalog/newsletter $2 accept VISA MASTERCARD OK ENGINES PO BOX 355 MOHAWK NY 13407 July1996 49 .aaaa Sa e1K Rake ASK 181/385 163span wing profile E193/197 weight Ca 115 lbs Roedelniodel ASK 211/45 l65span wing profile E393 weight Ca 115 lbs RawberE DIECUE 1/375 lS7span wing profile HO 30/14 weIght Ca 10 ibs Roebers AEW 24/271/35 157span wing profile HO 30/14 weight Ca ii lbs KrauEe SUlta 1/3 177span wing profile 11Q 3/14 weight Ca 135 ibs Rake DC 2021/35191 span wing profile E203/201/197 weight ca 11 lbs Ripo DC 6001/3 236span scale wing profile weight ca 25 lbs Euchele NimbuE 41/44 237span wing profile HO 3/14 3/13 weight Ca 14 lbs TOWPLANES FriNch PZL 104 WIlgo 1/4 i09span 79 long weight Ca 20-23 lbs aaaaaaa SuilpIanes Unlimited Ltd 63 East 82nd Stre et NYC NY 10028 East coast contact Robin Lehman 212 879-1634 Phone 212 535-5295 Fax West coast contact Mark Foster 213 257-4573 OK Cub 049A Radial mount Nylon tank High RPM True Carburetion important good flight characteristics Make sure correct amount washout present once covered cannot changed covering material 1A2 balsa sheet Start leading edge cover midpoint main spar forward leading edge Use thin CyA hold place Use extra-wide pieces balsa cover aft portion wing can glue two three four-inch-wide pieces together thin CyA Note access hatches enable service motors bellcranks etc cover areas Before both sides covered install dummy antenna wire will enable pull actual antenna through receiver installed Some may find easier install wire motors before wing fully covered although can also done afterward Once covering place remove airplane jigit should very torsionally stiff careful can easily poke finger through thin covering material Cut two air-exhaust hatches top surface shown plans Make hatch covers access openings out 1/3 balsa Secure small screws Use /s-wide strips /32 balsa cover propeller shaft housings Light filler can used necessary main nacelle shape now added wing surface Use A6 balsa bulkheads /16-square balsa runners Cover /32 sheet balsa Sand everything smooth paint model silver automotive trim paint keep weight down use too much paint pilots canopy molded plastic sheet vacuum-formed over wooden block has carved sanded shape Painting surface wing under canopy black attach canopy plastic cement small pilot head can added desired main landing gear formed 3A2 music wire nose gear formed As music wire have wire bender use two door-hinge pins held securely 50 Model Aviation 4On Antiques Military Civilian Helicopters Sailplanes have wA1 brgest aircraft Sxumentation collection 5800 different full color photo studies 1905-1996 33000 3-view line drawings New 1996 Catalog/Guide 188 pages Canada/Mexico $1000 Only $8 Overseas $1500 [A Bob Bankas e Model Research 3114 Yukon Avenue a Mesa CA 92626 79-8058 Look us net http/fimtnet/-]ms/scalehtml TT TOP VIEW ION PLOSOOSRIVER STREARaccess SATANS BLASE PASSER CROSTSOSEL S SO LACENIIT 0 PAREAOEO BRO 30320k SETAL-OUTBOAROMOTOR NOSEGEAR STEERING BELLCRANKCOPS- INSTALLATION SETAIL SECT D-O0550ELOI4 - -4 MOTORSPOELLE II-c.-1 -C- IPANSPOT BLADES PA NSES PROPSSIDE VIEWSECT B-B ITTSPECIFICATIONS SDNSEISTOTEBOSOALBIIS2I N oioN NCSTSTRICTIOSBOLT UP BALSE N PIT ST STCODERINABALSA SOEST CORP CS01ST SPARBA S SOS SASS AKSESOVEAPLE SATANTASRE BLADES 0505 ASIA NOPPOOCEELSNARN AREASTE S PA IN PEAK POTRNEBNSTSBNSEBLISPALOTE AR SIPAIIBBINSA AASISTIITB 000 PAMODEL AVIATION STOP SPOPTORELEARRIC SADROSSSIBAARINORThROP XR-35 PEAK PSLOBEBSONE ROB SAAEO RAKSOPS SETLITESSEELSFLYING WING BOMBER ASSFRONT LAB ABE ADNILSELL PROS5025AK S BSENISTES BT SLSSO S LACE PUPIC_____________ CIETAILINBOARO MOTORDONTDTPTIZSOO S/S/AT ARLATRA OTTOSTAUS BEEMBREBISP P814 1 N D -U 0 D D 0 D 0 IB BALSA SHEETVIAx 14 BALSAV32x VA BALSA V T SPARST E FACING 3B BALSA LEAD NG ESSE 723B GA R 9BALSA CE RB 332 BALSA LIGITENINHEEl HOLES3S2 SO BALSA BEAR SPARS R 7SGO BALSA SHEET R6 R 5332 BALSASB IA _____SHEETBOLSA T E R4 TRIM OUT TO LIGHTEN G32 BALSA SHEET VIA BALSA SHEET VIA BALSA SHEET SHEETIIG GO BALSA STRINGER PROPADAPTOR 9/IASIAA GM NOB 316 DIG HP OTASI THREAS S-AR AA PP ER WING RIE~ -- PLO 77r7T T PECK B/BVB14 SILVER OTBEG ELECTRIC MOlD SERVO BALSATO NOSEAHEEL L E TYPICAL MOTOR MOUNT DETAIL WING IA PLOASAS NOTE SPARS NEES TO BE TAPERED TG FIT IN WING TIP AREA R17 032 BALSA SHEET H 16 R 15 052 BALSA SHEET VA GALS LEVIA BASA SHEET 4 R I-I2-- 222-- Si 1- - IA BALSA SHEET Ru -LI__________ R3R2-5R2 GA BALSA LEASING EDGE R 10 BALsA R-IIIA BALSATRAILINGIHs3/BBALSA Sf32 BALSAESGETAPERED LE SHE ET 0/A SO BALSA STRINGER TTHCAL I//H BALSA F G H i//A BALSA SHEET VA SoEI/IA BALSA SHEET BALSA STRI BAER I/IA BALSA SHEET DI SLOE 2-BA RATS ON BACH D2 I//A PLOWOOD SERVO MOONTINA PLATE ItiTAI ATIANI TOP VIEW VIA GIG MW N 133 SERVOS----BAlSA TE TO SERVOGTO ELEVON SERVO INSTALLATION FRONT VIEW PLO 3/B IS I/B PLO VIA PLO ~ PLY INROARS 3/525 I/IA IN- BAAROOAT- BGABS NACELLE S MODEL AVIATION NOTHROP XB-35 FLYING WING BOMBER BESIANED BC CLARK CALKINS INKED PLANS BC DOE SEMARCO ALL N/BROS SNEER OVA CGAPIJ//GIZEO 4AAB GO OOATCAO SESESOEB B BPB vise about -inch apart Sullivan SkyLite wheels used components have installed check center gravity CG Youll want CG very close location plans indicate Start CG slightly ahead location shown plans Move batteries around adjust CG location dont add weight dont have models final weight should 44-48 ounces Flying flying wings characteristics will similar other normal aircraft CG properly located models elevons have very short moment arm cant correct CG off very much directional stability provided swept wing propellers adequate Pitch stability provided thrustline above CG elevon balancing forces combined symmetrical airfoil wing twist makes easily controlled aircraft did find bad habits smooth runway important will help prevent airplane bouncing around nose quite light runway smooth can use training wheels small wires trailing down wingtipsto help prevent airplane rotating too much tipping side other made several taxi tests get feel steering Slight misalignments main gear will make model hard control will find taxi airplane fairly fast may pop off ground suddenly let off throttle because propeller thrust exerts down force nose wheel let up sudden drag causes nose lift Its quite surprising first time happens prepare model its initial flight make sure batteries fully charged peak-charging best trim elevons up about 30 first flight close off wing slots clear plastic tape supposed improve low-speed handling increase drag making acceleration difficult Youll want takeoff directly wind possible apply full throttle model should get up speed 100 feet might need add little up elevon get off ground CG too far forward might get off does might able climb Once model air climb gradually builds up speed battery motor propeller combination adequate airplane definitely overpowered careful turns until get feel model Turn slowly first symmetrical-airfoil wing little dihedral will prevent airplane righting itself after turn will have turn model back straighten out should able cut power back conserve batteries after 30 seconds Keep airplane close bywith type aircraft easy lose orientation gets too far away Because light wing loading wind gusts will quite noticeable Landing much different other airplanes although such light wing loading does tend float will find decelerates power cut due high propeller area reason best land under power sight sound model air amazing sure brought back memories k Calkins 1907 Alvarado Ave Walnut Creek CA 94596 References Kohn Leo J Flying Wings Northrop 1974 Maloney Edward T Northrop Flying Wings 1975 Wooldridge ET Winged Wonders Story Flying Wings 1983 TVITT Wing Thing Tailless aircraft group Box 20430 El Cajon CA 92021 II Tfle maII oI SpecialistsSENDI FOR YOUR IOVER 2000 TOOLS & ACCESSORIES COPY Brand Names. Unusual Items.TODAY Exclusive Products savings upI Ito 60% designed make project Ieasier enjoyable professional I TO ORDER Send $100 coupon name address ADDRESS_____________________________________________________[v33][b15482997132525540]] MicroMark 2058 Snyder AveI Berkeley Heights NJ 07922-1595CiTY_____________________________ STATE_________ ZIP____________ II Ba Large tube modal 5995 Gats fingers sway prop Mounts anywhere model must scale models eliminates need hole cowl needle valve needle lves 5 Easy dieap fix broken Get engine ruimingperfedlly countsin air ever again blows flight because bad mixture sdtin& in-flight engine shutoff smoke valve Top leror used tIn setup valve ean placsd enider rowi m fssdag Extra savo & adi diarusel required Soth vslvu gusranteed require no nigine modifications Just opine needle valve leave alone inst needle valve off ranove wanL Ranote & in-flight valvin work glow-ping asginra whidi ma use medium 3132 id fled tubing Lange tube lM id models viny large & some rang glow aiginra Contains task thai line leaks dont have feel-proof tank ares Makes tank isalaltation caner Leaks trapped p1551k bag sealed 13/16 hole firewall tubber cosuixeasion ring Keeps feel oil firewall oat feselage use glow feel Patent pendin& LekCatcher plus 13/16 drill bIt drilling firewall hole required LeakCatcher $295 1nsla-cure thin CA lasts-cure n gap filling CA 1 ox $395 2 ox $625 Odorless Super-Golds thin CA Super-Cold filling CA ox S795 2 ox S1395 lasts-Set CA Accelerator 2 ox $395 order call 1400 765-0474 Visa & MC accepted Ask aboet ow club discounts send check MO Atlantic it/C Products Inc P0 Box 523007 Springfield VA 22152 Free shipping orders over $20 Add $350 shipping handling ordors snidor $20 vArwidonts add 45% sales tax Dmlmmouiries invited July1996 53 Alantic RIC mixture valves safety convenience Get freedom safely control engines mixture needle anywhere model flight using new patented principle No TIME LettheRed Baron Building building service specializing scale RC Aircraft Warblrds aera Classic Aircraft Racing Aircraft Kis Iron Byron Originals Proctor Nick Ziroll Plans hon Ntwsl size scale kit Coming Soon New 10 Super Scale Laser Cit Kits Gee Bee 7 1/3 Scale 94 wingspan Nine other kits Send $200 Catalog RED BARON INTERNATIONAL 710 Cleveland Ste 4 Idaho Falls ID 83402 Call us quote today 208-528-0427
Edition: Model Aviation - 1996/07
Page Numbers: 44, 45, 46, 47, 49, 50, 51, 52, 53
lying-wing aircraft have fascinated long time te young recall seeing large flying-wing bomber TV news 1K program probably covering cancellation Northrop XB-351YB-49 project brief glimpse such graceful aircraft has tayed 40 years As youngster played usual assortment airplanes gliders controlline airplanes simple RC models Fond memories persist father walking Tony Addie Naccaratos Hobby Lobby Burbank California coming out some kits single-channel RC gearfor about $100 Dont tell Mom much spent still recall father saying enjoyed hobby very much though flying success quite limited pursuit education earning living stepped took away hobby day few years ago ran copy book Flying Wings Northrop used bookstore details Northrop XB-35 propeller YB-49 jet flying-wing bombers remembered fascinated once again photographs cutaway drawings book sketched up some approximate dimensions toyed idea building model Maybe would fly Looking through some current model airplane magazines 44 Model Aviation trial-fit leading trailir Internal structure XB-35 Light weight paramount Most strength will come top bottom sheeting 46-ounce XB-35 powered four Silver Streak Electric motors turning Cox 5 x 35 three-blade pusher props Ileeting place covered up nz Top sheeting has completed Access limited motors mounted such can removed servicing Servo installation Rightmost servo has mixer attached Upper link left servo goes steering belicrank Note vents July1996 45 amazed advanced affordable RC equipment become continued look literature flying wings general XB-35 particular times felt remembered airplanes persistence uncovered several excellent publications able determine basic geometry airplane make good estimates some less-obvious parameters determined A2-scale model would smallest practical size would still have good flying characteristics could powered Electric motors felt would easier control gas engines Batteries would provide three five minutes flight Power takeoffs would adequate outstanding tried various motors propellers batteries before deciding proceed design settled included standard balsa-and-Lite Ply construction four Silver Streak motors PeckPolymers turning Cox 5 x 35 three-blade pusher propellers Futaba four-channel radio system speed control small servos Du-Bro V-tail mixer motors would wired parallel high-efficiency wire Sermos connectors would used six- sevencell 1 500-mAh battery pack would power everything wingspan slightly five feet set target weight 40 ounces hoped come under slightly optimistic final flying weight 46 ounces CONSTRUCTION wing built two halves joined middle balsa sheeting applied after halves joined motor mounts propeller-shaft support structures place allows easy access during alignment phase Because models symmetrical airfoil jig required build wing structure cannot lie flat workbench half wing flat root tip main spar has inflection rib 7 requires some extra care spar support elevations flat work surface shown table below elevation main spar rib 7 compensates inflection main spar T structure top bottom surfaces wing center portion made 2 balsa outer portion made 16 sure spars straight flat Pin piece work surface using straightedge guide vertical piece centered cyanoacrylate CyA glue used hold place forming shaped cross-section Attach spars work surface over plans supported elevations shown Supports several intermediate points will also help Spar Support Elevations LocationRootRib 7 Main Spar 00 0125 RearSpar1125075 Tip 00 01875 Cut ribs sheet balsa consistency put pattern inboard surface worthwhile mark top bottom left right pieces prevent confusion almostbut quitesymmetrical Cut main spar notches first place ribs jig locate rear spar location Because INTRODUCINO NFW" PRECISION PROP NUTS AND HUBS Now greater choice quality Tru-Turn products 3 sizes PROP NUTS ranging 5/8 7/8 diameter 2 shapes available stock RIG engine thread sizes 5 sizes PROP HUBS ranging 1 2 diameter 2 shapes new PROP NUTS PROP HUBS addition existing line precision aluminum spinners range 1-1/2 6 over 90 shapes sizes blade configurations new Tru-Turn PROP HUB line complimented extensive line over 70 adapter kits Tru-Turn makes adapter production RIG engine market have adapter problem. help phone call away. See hobby dealer call us direct. /IIZzJ7/TM Made n U S PRECISION MODEL PRODUCTS Romco Manufacturing Inc QUALITY VERSATILITY GREAT LOOKS TY PO Box 836 South Houston Texas 77587 713/ 943-1867 46 Model Aviation i w angles involved would difficult cut everything once maintain alignment spar notches place remove ribs form trim off portions leading trailing edges cut lightening holes Attach ribs bottom spars ribs need inclined 30 off vertical compensate dihedral angle bottom surface Use doubler rib 7 add strength inflection joint appears main spar ribs place top spars can added ribs attached spars leading trailing edges can added leading edge made 4 balsa Trial-fit pieces make sure ribs make firm contact Holding piece place mark top bottom points contacts rib Remove stock draw line root top contact points use guide trim excess material before glued place leading edge has large slot allow cooling air reach motors batteries speed control Cut slot before leading edge attached After glued place carefully trim material Remember structure fairly fragile before covered elevons built balsa similar procedure using leftover pieces ribs Use A6 plywood control horn Line up main wing locate hinge points Glue hinges elevons first used pin point hinges Carl Goldberg Models almost available hinge would work just well Cover elevons 1/32 balsa Sand shape Now elevon hinges can attached main wing use thick CyA epoxy thin CyA can wick hinge joint Elevon throw should 150 wing slots added next could find details used straight pieces 142 balsa sheet glued between ribs included appearance eieases 1995 Warbirds 95 & Birds Prey $1995 EACH S&1I SEND TO AMR PRODUCTIONS P0 BOX 1813 TOMS RIVER NJ 08754 GOT PROBLEM PAT 4221452 Re eta 3acA 1-SOFT MOUNTED ENGINESJLVE IT WITH WRECKING GLOW DRIVER 2-HARD TO GET AT PLUGHEAD 3LARGE/DEEP COWLING FITS ALL STANDARD PLUGS4FINGERS CLOSE TO PROP 5SCALE PROJEC NO HOR E Al OT E FROM K&B 2 STROKE TOHEAOLOCX GLOW DRIVER ENYA 4 STROKECdenct ST#021 SINGLE$995 ST#022 TWIN$1395 LOCK IF EYr AVAThAUZ $100 $200LB MODEL PRODUCTS CORPPO BOX 100 ALLAMUCHY NJ 07820908 850-1508 c4 Mills ls ] rIiITES Precision instruments I FREE COR CATALOG FREE CATALOGChoose over 200 exc t ng k tes LATIIESii unusual & nnovat ye des gns CAMPBELL TOOLS COI Call write catalog todayl 2100-M Selma RdI Wind l 541-0314 Spnngfield OH MA Pearl St Boulder CO 80302 513-3224502 1800 ruiter ordersl L rushless DC Motors & Dita1 d Controller Call 716-662-5651 Brochure & Oderfomi azecm Motors 57 Hawthorne Dr Orchard Park NY 14127 ction full-scale XB-35 used takeoff landings closed during normal flight know would effective model size motor mounts propeller-shaft housings built up 1/i6 plywood used ball bearings custom propeller adapters final shaft supports plywood nylon bearings would also work motor mounts constructed motors can removed servicing Align components best can before gluing place Misalignment can cause excessive vibration leading lack power eventual fatigue failures Spend little extra time balsa webbing between bottom propeller shaft supports trailing edge used absorb normal vibrations very important test-run motors support place next step join two wing halves main strength provided /16-plywood bulkhead main spar Balsa blocks top bottom used fill gaps between bulkhead spars Verify dihedral before gluing everything place Use slow-curing epoxy can adjust components necessary before adhesive sets two leading edges secured Aplywood strengthener 46-plywood rear bulkhead also holds servos Check servos fit properly mixer works before gluing things place Now can install elevon controls cables Secure cables ribs reduce slop improve control Attach main landing-gear support blocks steerable nose wheel support made /6 plywood A6 hole drilled through control cable also needs supported several places improve ground handling cover model build simple jig hold firmly center wingtips Note wing has 50 washout front wingtips point down slightly must built before covering added very OK Cub 049B Lug & radial mount Metal tank High RPM True Carburetion $14 EACH shpg per order 58 years OK engine history 80 page book Includes complete engine listings full color photos COLLECTOR EDITION $1195 p/p Set five color posters $15 year catalog/newsletter $2 accept VISA MASTERCARD OK ENGINES PO BOX 355 MOHAWK NY 13407 July1996 49 .aaaa Sa e1K Rake ASK 181/385 163span wing profile E193/197 weight Ca 115 lbs Roedelniodel ASK 211/45 l65span wing profile E393 weight Ca 115 lbs RawberE DIECUE 1/375 lS7span wing profile HO 30/14 weIght Ca 10 ibs Roebers AEW 24/271/35 157span wing profile HO 30/14 weight Ca ii lbs KrauEe SUlta 1/3 177span wing profile 11Q 3/14 weight Ca 135 ibs Rake DC 2021/35191 span wing profile E203/201/197 weight ca 11 lbs Ripo DC 6001/3 236span scale wing profile weight ca 25 lbs Euchele NimbuE 41/44 237span wing profile HO 3/14 3/13 weight Ca 14 lbs TOWPLANES FriNch PZL 104 WIlgo 1/4 i09span 79 long weight Ca 20-23 lbs aaaaaaa SuilpIanes Unlimited Ltd 63 East 82nd Stre et NYC NY 10028 East coast contact Robin Lehman 212 879-1634 Phone 212 535-5295 Fax West coast contact Mark Foster 213 257-4573 OK Cub 049A Radial mount Nylon tank High RPM True Carburetion important good flight characteristics Make sure correct amount washout present once covered cannot changed covering material 1A2 balsa sheet Start leading edge cover midpoint main spar forward leading edge Use thin CyA hold place Use extra-wide pieces balsa cover aft portion wing can glue two three four-inch-wide pieces together thin CyA Note access hatches enable service motors bellcranks etc cover areas Before both sides covered install dummy antenna wire will enable pull actual antenna through receiver installed Some may find easier install wire motors before wing fully covered although can also done afterward Once covering place remove airplane jigit should very torsionally stiff careful can easily poke finger through thin covering material Cut two air-exhaust hatches top surface shown plans Make hatch covers access openings out 1/3 balsa Secure small screws Use /s-wide strips /32 balsa cover propeller shaft housings Light filler can used necessary main nacelle shape now added wing surface Use A6 balsa bulkheads /16-square balsa runners Cover /32 sheet balsa Sand everything smooth paint model silver automotive trim paint keep weight down use too much paint pilots canopy molded plastic sheet vacuum-formed over wooden block has carved sanded shape Painting surface wing under canopy black attach canopy plastic cement small pilot head can added desired main landing gear formed 3A2 music wire nose gear formed As music wire have wire bender use two door-hinge pins held securely 50 Model Aviation 4On Antiques Military Civilian Helicopters Sailplanes have wA1 brgest aircraft Sxumentation collection 5800 different full color photo studies 1905-1996 33000 3-view line drawings New 1996 Catalog/Guide 188 pages Canada/Mexico $1000 Only $8 Overseas $1500 [A Bob Bankas e Model Research 3114 Yukon Avenue a Mesa CA 92626 79-8058 Look us net http/fimtnet/-]ms/scalehtml TT TOP VIEW ION PLOSOOSRIVER STREARaccess SATANS BLASE PASSER CROSTSOSEL S SO LACENIIT 0 PAREAOEO BRO 30320k SETAL-OUTBOAROMOTOR NOSEGEAR STEERING BELLCRANKCOPS- INSTALLATION SETAIL SECT D-O0550ELOI4 - -4 MOTORSPOELLE II-c.-1 -C- IPANSPOT BLADES PA NSES PROPSSIDE VIEWSECT B-B ITTSPECIFICATIONS SDNSEISTOTEBOSOALBIIS2I N oioN NCSTSTRICTIOSBOLT UP BALSE N PIT ST STCODERINABALSA SOEST CORP CS01ST SPARBA S SOS SASS AKSESOVEAPLE SATANTASRE BLADES 0505 ASIA NOPPOOCEELSNARN AREASTE S PA IN PEAK POTRNEBNSTSBNSEBLISPALOTE AR SIPAIIBBINSA AASISTIITB 000 PAMODEL AVIATION STOP SPOPTORELEARRIC SADROSSSIBAARINORThROP XR-35 PEAK PSLOBEBSONE ROB SAAEO RAKSOPS SETLITESSEELSFLYING WING BOMBER ASSFRONT LAB ABE ADNILSELL PROS5025AK S BSENISTES BT SLSSO S LACE PUPIC_____________ CIETAILINBOARO MOTORDONTDTPTIZSOO S/S/AT ARLATRA OTTOSTAUS BEEMBREBISP P814 1 N D -U 0 D D 0 D 0 IB BALSA SHEETVIAx 14 BALSAV32x VA BALSA V T SPARST E FACING 3B BALSA LEAD NG ESSE 723B GA R 9BALSA CE RB 332 BALSA LIGITENINHEEl HOLES3S2 SO BALSA BEAR SPARS R 7SGO BALSA SHEET R6 R 5332 BALSASB IA _____SHEETBOLSA T E R4 TRIM OUT TO LIGHTEN G32 BALSA SHEET VIA BALSA SHEET VIA BALSA SHEET SHEETIIG GO BALSA STRINGER PROPADAPTOR 9/IASIAA GM NOB 316 DIG HP OTASI THREAS S-AR AA PP ER WING RIE~ -- PLO 77r7T T PECK B/BVB14 SILVER OTBEG ELECTRIC MOlD SERVO BALSATO NOSEAHEEL L E TYPICAL MOTOR MOUNT DETAIL WING IA PLOASAS NOTE SPARS NEES TO BE TAPERED TG FIT IN WING TIP AREA R17 032 BALSA SHEET H 16 R 15 052 BALSA SHEET VA GALS LEVIA BASA SHEET 4 R I-I2-- 222-- Si 1- - IA BALSA SHEET Ru -LI__________ R3R2-5R2 GA BALSA LEASING EDGE R 10 BALsA R-IIIA BALSATRAILINGIHs3/BBALSA Sf32 BALSAESGETAPERED LE SHE ET 0/A SO BALSA STRINGER TTHCAL I//H BALSA F G H i//A BALSA SHEET VA SoEI/IA BALSA SHEET BALSA STRI BAER I/IA BALSA SHEET DI SLOE 2-BA RATS ON BACH D2 I//A PLOWOOD SERVO MOONTINA PLATE ItiTAI ATIANI TOP VIEW VIA GIG MW N 133 SERVOS----BAlSA TE TO SERVOGTO ELEVON SERVO INSTALLATION FRONT VIEW PLO 3/B IS I/B PLO VIA PLO ~ PLY INROARS 3/525 I/IA IN- BAAROOAT- BGABS NACELLE S MODEL AVIATION NOTHROP XB-35 FLYING WING BOMBER BESIANED BC CLARK CALKINS INKED PLANS BC DOE SEMARCO ALL N/BROS SNEER OVA CGAPIJ//GIZEO 4AAB GO OOATCAO SESESOEB B BPB vise about -inch apart Sullivan SkyLite wheels used components have installed check center gravity CG Youll want CG very close location plans indicate Start CG slightly ahead location shown plans Move batteries around adjust CG location dont add weight dont have models final weight should 44-48 ounces Flying flying wings characteristics will similar other normal aircraft CG properly located models elevons have very short moment arm cant correct CG off very much directional stability provided swept wing propellers adequate Pitch stability provided thrustline above CG elevon balancing forces combined symmetrical airfoil wing twist makes easily controlled aircraft did find bad habits smooth runway important will help prevent airplane bouncing around nose quite light runway smooth can use training wheels small wires trailing down wingtipsto help prevent airplane rotating too much tipping side other made several taxi tests get feel steering Slight misalignments main gear will make model hard control will find taxi airplane fairly fast may pop off ground suddenly let off throttle because propeller thrust exerts down force nose wheel let up sudden drag causes nose lift Its quite surprising first time happens prepare model its initial flight make sure batteries fully charged peak-charging best trim elevons up about 30 first flight close off wing slots clear plastic tape supposed improve low-speed handling increase drag making acceleration difficult Youll want takeoff directly wind possible apply full throttle model should get up speed 100 feet might need add little up elevon get off ground CG too far forward might get off does might able climb Once model air climb gradually builds up speed battery motor propeller combination adequate airplane definitely overpowered careful turns until get feel model Turn slowly first symmetrical-airfoil wing little dihedral will prevent airplane righting itself after turn will have turn model back straighten out should able cut power back conserve batteries after 30 seconds Keep airplane close bywith type aircraft easy lose orientation gets too far away Because light wing loading wind gusts will quite noticeable Landing much different other airplanes although such light wing loading does tend float will find decelerates power cut due high propeller area reason best land under power sight sound model air amazing sure brought back memories k Calkins 1907 Alvarado Ave Walnut Creek CA 94596 References Kohn Leo J Flying Wings Northrop 1974 Maloney Edward T Northrop Flying Wings 1975 Wooldridge ET Winged Wonders Story Flying Wings 1983 TVITT Wing Thing Tailless aircraft group Box 20430 El Cajon CA 92021 II Tfle maII oI SpecialistsSENDI FOR YOUR IOVER 2000 TOOLS & ACCESSORIES COPY Brand Names. Unusual Items.TODAY Exclusive Products savings upI Ito 60% designed make project Ieasier enjoyable professional I TO ORDER Send $100 coupon name address ADDRESS_____________________________________________________[v33][b15482997132525540]] MicroMark 2058 Snyder AveI Berkeley Heights NJ 07922-1595CiTY_____________________________ STATE_________ ZIP____________ II Ba Large tube modal 5995 Gats fingers sway prop Mounts anywhere model must scale models eliminates need hole cowl needle valve needle lves 5 Easy dieap fix broken Get engine ruimingperfedlly countsin air ever again blows flight because bad mixture sdtin& in-flight engine shutoff smoke valve Top leror used tIn setup valve ean placsd enider rowi m fssdag Extra savo & adi diarusel required Soth vslvu gusranteed require no nigine modifications Just opine needle valve leave alone inst needle valve off ranove wanL Ranote & in-flight valvin work glow-ping asginra whidi ma use medium 3132 id fled tubing Lange tube lM id models viny large & some rang glow aiginra Contains task thai line leaks dont have feel-proof tank ares Makes tank isalaltation caner Leaks trapped p1551k bag sealed 13/16 hole firewall tubber cosuixeasion ring Keeps feel oil firewall oat feselage use glow feel Patent pendin& LekCatcher plus 13/16 drill bIt drilling firewall hole required LeakCatcher $295 1nsla-cure thin CA lasts-cure n gap filling CA 1 ox $395 2 ox $625 Odorless Super-Golds thin CA Super-Cold filling CA ox S795 2 ox S1395 lasts-Set CA Accelerator 2 ox $395 order call 1400 765-0474 Visa & MC accepted Ask aboet ow club discounts send check MO Atlantic it/C Products Inc P0 Box 523007 Springfield VA 22152 Free shipping orders over $20 Add $350 shipping handling ordors snidor $20 vArwidonts add 45% sales tax Dmlmmouiries invited July1996 53 Alantic RIC mixture valves safety convenience Get freedom safely control engines mixture needle anywhere model flight using new patented principle No TIME LettheRed Baron Building building service specializing scale RC Aircraft Warblrds aera Classic Aircraft Racing Aircraft Kis Iron Byron Originals Proctor Nick Ziroll Plans hon Ntwsl size scale kit Coming Soon New 10 Super Scale Laser Cit Kits Gee Bee 7 1/3 Scale 94 wingspan Nine other kits Send $200 Catalog RED BARON INTERNATIONAL 710 Cleveland Ste 4 Idaho Falls ID 83402 Call us quote today 208-528-0427
Edition: Model Aviation - 1996/07
Page Numbers: 44, 45, 46, 47, 49, 50, 51, 52, 53
lying-wing aircraft have fascinated long time te young recall seeing large flying-wing bomber TV news 1K program probably covering cancellation Northrop XB-351YB-49 project brief glimpse such graceful aircraft has tayed 40 years As youngster played usual assortment airplanes gliders controlline airplanes simple RC models Fond memories persist father walking Tony Addie Naccaratos Hobby Lobby Burbank California coming out some kits single-channel RC gearfor about $100 Dont tell Mom much spent still recall father saying enjoyed hobby very much though flying success quite limited pursuit education earning living stepped took away hobby day few years ago ran copy book Flying Wings Northrop used bookstore details Northrop XB-35 propeller YB-49 jet flying-wing bombers remembered fascinated once again photographs cutaway drawings book sketched up some approximate dimensions toyed idea building model Maybe would fly Looking through some current model airplane magazines 44 Model Aviation trial-fit leading trailir Internal structure XB-35 Light weight paramount Most strength will come top bottom sheeting 46-ounce XB-35 powered four Silver Streak Electric motors turning Cox 5 x 35 three-blade pusher props Ileeting place covered up nz Top sheeting has completed Access limited motors mounted such can removed servicing Servo installation Rightmost servo has mixer attached Upper link left servo goes steering belicrank Note vents July1996 45 amazed advanced affordable RC equipment become continued look literature flying wings general XB-35 particular times felt remembered airplanes persistence uncovered several excellent publications able determine basic geometry airplane make good estimates some less-obvious parameters determined A2-scale model would smallest practical size would still have good flying characteristics could powered Electric motors felt would easier control gas engines Batteries would provide three five minutes flight Power takeoffs would adequate outstanding tried various motors propellers batteries before deciding proceed design settled included standard balsa-and-Lite Ply construction four Silver Streak motors PeckPolymers turning Cox 5 x 35 three-blade pusher propellers Futaba four-channel radio system speed control small servos Du-Bro V-tail mixer motors would wired parallel high-efficiency wire Sermos connectors would used six- sevencell 1 500-mAh battery pack would power everything wingspan slightly five feet set target weight 40 ounces hoped come under slightly optimistic final flying weight 46 ounces CONSTRUCTION wing built two halves joined middle balsa sheeting applied after halves joined motor mounts propeller-shaft support structures place allows easy access during alignment phase Because models symmetrical airfoil jig required build wing structure cannot lie flat workbench half wing flat root tip main spar has inflection rib 7 requires some extra care spar support elevations flat work surface shown table below elevation main spar rib 7 compensates inflection main spar T structure top bottom surfaces wing center portion made 2 balsa outer portion made 16 sure spars straight flat Pin piece work surface using straightedge guide vertical piece centered cyanoacrylate CyA glue used hold place forming shaped cross-section Attach spars work surface over plans supported elevations shown Supports several intermediate points will also help Spar Support Elevations LocationRootRib 7 Main Spar 00 0125 RearSpar1125075 Tip 00 01875 Cut ribs sheet balsa consistency put pattern inboard surface worthwhile mark top bottom left right pieces prevent confusion almostbut quitesymmetrical Cut main spar notches first place ribs jig locate rear spar location Because INTRODUCINO NFW" PRECISION PROP NUTS AND HUBS Now greater choice quality Tru-Turn products 3 sizes PROP NUTS ranging 5/8 7/8 diameter 2 shapes available stock RIG engine thread sizes 5 sizes PROP HUBS ranging 1 2 diameter 2 shapes new PROP NUTS PROP HUBS addition existing line precision aluminum spinners range 1-1/2 6 over 90 shapes sizes blade configurations new Tru-Turn PROP HUB line complimented extensive line over 70 adapter kits Tru-Turn makes adapter production RIG engine market have adapter problem. help phone call away. See hobby dealer call us direct. /IIZzJ7/TM Made n U S PRECISION MODEL PRODUCTS Romco Manufacturing Inc QUALITY VERSATILITY GREAT LOOKS TY PO Box 836 South Houston Texas 77587 713/ 943-1867 46 Model Aviation i w angles involved would difficult cut everything once maintain alignment spar notches place remove ribs form trim off portions leading trailing edges cut lightening holes Attach ribs bottom spars ribs need inclined 30 off vertical compensate dihedral angle bottom surface Use doubler rib 7 add strength inflection joint appears main spar ribs place top spars can added ribs attached spars leading trailing edges can added leading edge made 4 balsa Trial-fit pieces make sure ribs make firm contact Holding piece place mark top bottom points contacts rib Remove stock draw line root top contact points use guide trim excess material before glued place leading edge has large slot allow cooling air reach motors batteries speed control Cut slot before leading edge attached After glued place carefully trim material Remember structure fairly fragile before covered elevons built balsa similar procedure using leftover pieces ribs Use A6 plywood control horn Line up main wing locate hinge points Glue hinges elevons first used pin point hinges Carl Goldberg Models almost available hinge would work just well Cover elevons 1/32 balsa Sand shape Now elevon hinges can attached main wing use thick CyA epoxy thin CyA can wick hinge joint Elevon throw should 150 wing slots added next could find details used straight pieces 142 balsa sheet glued between ribs included appearance eieases 1995 Warbirds 95 & Birds Prey $1995 EACH S&1I SEND TO AMR PRODUCTIONS P0 BOX 1813 TOMS RIVER NJ 08754 GOT PROBLEM PAT 4221452 Re eta 3acA 1-SOFT MOUNTED ENGINESJLVE IT WITH WRECKING GLOW DRIVER 2-HARD TO GET AT PLUGHEAD 3LARGE/DEEP COWLING FITS ALL STANDARD PLUGS4FINGERS CLOSE TO PROP 5SCALE PROJEC NO HOR E Al OT E FROM K&B 2 STROKE TOHEAOLOCX GLOW DRIVER ENYA 4 STROKECdenct ST#021 SINGLE$995 ST#022 TWIN$1395 LOCK IF EYr AVAThAUZ $100 $200LB MODEL PRODUCTS CORPPO BOX 100 ALLAMUCHY NJ 07820908 850-1508 c4 Mills ls ] rIiITES Precision instruments I FREE COR CATALOG FREE CATALOGChoose over 200 exc t ng k tes LATIIESii unusual & nnovat ye des gns CAMPBELL TOOLS COI Call write catalog todayl 2100-M Selma RdI Wind l 541-0314 Spnngfield OH MA Pearl St Boulder CO 80302 513-3224502 1800 ruiter ordersl L rushless DC Motors & Dita1 d Controller Call 716-662-5651 Brochure & Oderfomi azecm Motors 57 Hawthorne Dr Orchard Park NY 14127 ction full-scale XB-35 used takeoff landings closed during normal flight know would effective model size motor mounts propeller-shaft housings built up 1/i6 plywood used ball bearings custom propeller adapters final shaft supports plywood nylon bearings would also work motor mounts constructed motors can removed servicing Align components best can before gluing place Misalignment can cause excessive vibration leading lack power eventual fatigue failures Spend little extra time balsa webbing between bottom propeller shaft supports trailing edge used absorb normal vibrations very important test-run motors support place next step join two wing halves main strength provided /16-plywood bulkhead main spar Balsa blocks top bottom used fill gaps between bulkhead spars Verify dihedral before gluing everything place Use slow-curing epoxy can adjust components necessary before adhesive sets two leading edges secured Aplywood strengthener 46-plywood rear bulkhead also holds servos Check servos fit properly mixer works before gluing things place Now can install elevon controls cables Secure cables ribs reduce slop improve control Attach main landing-gear support blocks steerable nose wheel support made /6 plywood A6 hole drilled through control cable also needs supported several places improve ground handling cover model build simple jig hold firmly center wingtips Note wing has 50 washout front wingtips point down slightly must built before covering added very OK Cub 049B Lug & radial mount Metal tank High RPM True Carburetion $14 EACH shpg per order 58 years OK engine history 80 page book Includes complete engine listings full color photos COLLECTOR EDITION $1195 p/p Set five color posters $15 year catalog/newsletter $2 accept VISA MASTERCARD OK ENGINES PO BOX 355 MOHAWK NY 13407 July1996 49 .aaaa Sa e1K Rake ASK 181/385 163span wing profile E193/197 weight Ca 115 lbs Roedelniodel ASK 211/45 l65span wing profile E393 weight Ca 115 lbs RawberE DIECUE 1/375 lS7span wing profile HO 30/14 weIght Ca 10 ibs Roebers AEW 24/271/35 157span wing profile HO 30/14 weight Ca ii lbs KrauEe SUlta 1/3 177span wing profile 11Q 3/14 weight Ca 135 ibs Rake DC 2021/35191 span wing profile E203/201/197 weight ca 11 lbs Ripo DC 6001/3 236span scale wing profile weight ca 25 lbs Euchele NimbuE 41/44 237span wing profile HO 3/14 3/13 weight Ca 14 lbs TOWPLANES FriNch PZL 104 WIlgo 1/4 i09span 79 long weight Ca 20-23 lbs aaaaaaa SuilpIanes Unlimited Ltd 63 East 82nd Stre et NYC NY 10028 East coast contact Robin Lehman 212 879-1634 Phone 212 535-5295 Fax West coast contact Mark Foster 213 257-4573 OK Cub 049A Radial mount Nylon tank High RPM True Carburetion important good flight characteristics Make sure correct amount washout present once covered cannot changed covering material 1A2 balsa sheet Start leading edge cover midpoint main spar forward leading edge Use thin CyA hold place Use extra-wide pieces balsa cover aft portion wing can glue two three four-inch-wide pieces together thin CyA Note access hatches enable service motors bellcranks etc cover areas Before both sides covered install dummy antenna wire will enable pull actual antenna through receiver installed Some may find easier install wire motors before wing fully covered although can also done afterward Once covering place remove airplane jigit should very torsionally stiff careful can easily poke finger through thin covering material Cut two air-exhaust hatches top surface shown plans Make hatch covers access openings out 1/3 balsa Secure small screws Use /s-wide strips /32 balsa cover propeller shaft housings Light filler can used necessary main nacelle shape now added wing surface Use A6 balsa bulkheads /16-square balsa runners Cover /32 sheet balsa Sand everything smooth paint model silver automotive trim paint keep weight down use too much paint pilots canopy molded plastic sheet vacuum-formed over wooden block has carved sanded shape Painting surface wing under canopy black attach canopy plastic cement small pilot head can added desired main landing gear formed 3A2 music wire nose gear formed As music wire have wire bender use two door-hinge pins held securely 50 Model Aviation 4On Antiques Military Civilian Helicopters Sailplanes have wA1 brgest aircraft Sxumentation collection 5800 different full color photo studies 1905-1996 33000 3-view line drawings New 1996 Catalog/Guide 188 pages Canada/Mexico $1000 Only $8 Overseas $1500 [A Bob Bankas e Model Research 3114 Yukon Avenue a Mesa CA 92626 79-8058 Look us net http/fimtnet/-]ms/scalehtml TT TOP VIEW ION PLOSOOSRIVER STREARaccess SATANS BLASE PASSER CROSTSOSEL S SO LACENIIT 0 PAREAOEO BRO 30320k SETAL-OUTBOAROMOTOR NOSEGEAR STEERING BELLCRANKCOPS- INSTALLATION SETAIL SECT D-O0550ELOI4 - -4 MOTORSPOELLE II-c.-1 -C- IPANSPOT BLADES PA NSES PROPSSIDE VIEWSECT B-B ITTSPECIFICATIONS SDNSEISTOTEBOSOALBIIS2I N oioN NCSTSTRICTIOSBOLT UP BALSE N PIT ST STCODERINABALSA SOEST CORP CS01ST SPARBA S SOS SASS AKSESOVEAPLE SATANTASRE BLADES 0505 ASIA NOPPOOCEELSNARN AREASTE S PA IN PEAK POTRNEBNSTSBNSEBLISPALOTE AR SIPAIIBBINSA AASISTIITB 000 PAMODEL AVIATION STOP SPOPTORELEARRIC SADROSSSIBAARINORThROP XR-35 PEAK PSLOBEBSONE ROB SAAEO RAKSOPS SETLITESSEELSFLYING WING BOMBER ASSFRONT LAB ABE ADNILSELL PROS5025AK S BSENISTES BT SLSSO S LACE PUPIC_____________ CIETAILINBOARO MOTORDONTDTPTIZSOO S/S/AT ARLATRA OTTOSTAUS BEEMBREBISP P814 1 N D -U 0 D D 0 D 0 IB BALSA SHEETVIAx 14 BALSAV32x VA BALSA V T SPARST E FACING 3B BALSA LEAD NG ESSE 723B GA R 9BALSA CE RB 332 BALSA LIGITENINHEEl HOLES3S2 SO BALSA BEAR SPARS R 7SGO BALSA SHEET R6 R 5332 BALSASB IA _____SHEETBOLSA T E R4 TRIM OUT TO LIGHTEN G32 BALSA SHEET VIA BALSA SHEET VIA BALSA SHEET SHEETIIG GO BALSA STRINGER PROPADAPTOR 9/IASIAA GM NOB 316 DIG HP OTASI THREAS S-AR AA PP ER WING RIE~ -- PLO 77r7T T PECK B/BVB14 SILVER OTBEG ELECTRIC MOlD SERVO BALSATO NOSEAHEEL L E TYPICAL MOTOR MOUNT DETAIL WING IA PLOASAS NOTE SPARS NEES TO BE TAPERED TG FIT IN WING TIP AREA R17 032 BALSA SHEET H 16 R 15 052 BALSA SHEET VA GALS LEVIA BASA SHEET 4 R I-I2-- 222-- Si 1- - IA BALSA SHEET Ru -LI__________ R3R2-5R2 GA BALSA LEASING EDGE R 10 BALsA R-IIIA BALSATRAILINGIHs3/BBALSA Sf32 BALSAESGETAPERED LE SHE ET 0/A SO BALSA STRINGER TTHCAL I//H BALSA F G H i//A BALSA SHEET VA SoEI/IA BALSA SHEET BALSA STRI BAER I/IA BALSA SHEET DI SLOE 2-BA RATS ON BACH D2 I//A PLOWOOD SERVO MOONTINA PLATE ItiTAI ATIANI TOP VIEW VIA GIG MW N 133 SERVOS----BAlSA TE TO SERVOGTO ELEVON SERVO INSTALLATION FRONT VIEW PLO 3/B IS I/B PLO VIA PLO ~ PLY INROARS 3/525 I/IA IN- BAAROOAT- BGABS NACELLE S MODEL AVIATION NOTHROP XB-35 FLYING WING BOMBER BESIANED BC CLARK CALKINS INKED PLANS BC DOE SEMARCO ALL N/BROS SNEER OVA CGAPIJ//GIZEO 4AAB GO OOATCAO SESESOEB B BPB vise about -inch apart Sullivan SkyLite wheels used components have installed check center gravity CG Youll want CG very close location plans indicate Start CG slightly ahead location shown plans Move batteries around adjust CG location dont add weight dont have models final weight should 44-48 ounces Flying flying wings characteristics will similar other normal aircraft CG properly located models elevons have very short moment arm cant correct CG off very much directional stability provided swept wing propellers adequate Pitch stability provided thrustline above CG elevon balancing forces combined symmetrical airfoil wing twist makes easily controlled aircraft did find bad habits smooth runway important will help prevent airplane bouncing around nose quite light runway smooth can use training wheels small wires trailing down wingtipsto help prevent airplane rotating too much tipping side other made several taxi tests get feel steering Slight misalignments main gear will make model hard control will find taxi airplane fairly fast may pop off ground suddenly let off throttle because propeller thrust exerts down force nose wheel let up sudden drag causes nose lift Its quite surprising first time happens prepare model its initial flight make sure batteries fully charged peak-charging best trim elevons up about 30 first flight close off wing slots clear plastic tape supposed improve low-speed handling increase drag making acceleration difficult Youll want takeoff directly wind possible apply full throttle model should get up speed 100 feet might need add little up elevon get off ground CG too far forward might get off does might able climb Once model air climb gradually builds up speed battery motor propeller combination adequate airplane definitely overpowered careful turns until get feel model Turn slowly first symmetrical-airfoil wing little dihedral will prevent airplane righting itself after turn will have turn model back straighten out should able cut power back conserve batteries after 30 seconds Keep airplane close bywith type aircraft easy lose orientation gets too far away Because light wing loading wind gusts will quite noticeable Landing much different other airplanes although such light wing loading does tend float will find decelerates power cut due high propeller area reason best land under power sight sound model air amazing sure brought back memories k Calkins 1907 Alvarado Ave Walnut Creek CA 94596 References Kohn Leo J Flying Wings Northrop 1974 Maloney Edward T Northrop Flying Wings 1975 Wooldridge ET Winged Wonders Story Flying Wings 1983 TVITT Wing Thing Tailless aircraft group Box 20430 El Cajon CA 92021 II Tfle maII oI SpecialistsSENDI FOR YOUR IOVER 2000 TOOLS & ACCESSORIES COPY Brand Names. Unusual Items.TODAY Exclusive Products savings upI Ito 60% designed make project Ieasier enjoyable professional I TO ORDER Send $100 coupon name address ADDRESS_____________________________________________________[v33][b15482997132525540]] MicroMark 2058 Snyder AveI Berkeley Heights NJ 07922-1595CiTY_____________________________ STATE_________ ZIP____________ II Ba Large tube modal 5995 Gats fingers sway prop Mounts anywhere model must scale models eliminates need hole cowl needle valve needle lves 5 Easy dieap fix broken Get engine ruimingperfedlly countsin air ever again blows flight because bad mixture sdtin& in-flight engine shutoff smoke valve Top leror used tIn setup valve ean placsd enider rowi m fssdag Extra savo & adi diarusel required Soth vslvu gusranteed require no nigine modifications Just opine needle valve leave alone inst needle valve off ranove wanL Ranote & in-flight valvin work glow-ping asginra whidi ma use medium 3132 id fled tubing Lange tube lM id models viny large & some rang glow aiginra Contains task thai line leaks dont have feel-proof tank ares Makes tank isalaltation caner Leaks trapped p1551k bag sealed 13/16 hole firewall tubber cosuixeasion ring Keeps feel oil firewall oat feselage use glow feel Patent pendin& LekCatcher plus 13/16 drill bIt drilling firewall hole required LeakCatcher $295 1nsla-cure thin CA lasts-cure n gap filling CA 1 ox $395 2 ox $625 Odorless Super-Golds thin CA Super-Cold filling CA ox S795 2 ox S1395 lasts-Set CA Accelerator 2 ox $395 order call 1400 765-0474 Visa & MC accepted Ask aboet ow club discounts send check MO Atlantic it/C Products Inc P0 Box 523007 Springfield VA 22152 Free shipping orders over $20 Add $350 shipping handling ordors snidor $20 vArwidonts add 45% sales tax Dmlmmouiries invited July1996 53 Alantic RIC mixture valves safety convenience Get freedom safely control engines mixture needle anywhere model flight using new patented principle No TIME LettheRed Baron Building building service specializing scale RC Aircraft Warblrds aera Classic Aircraft Racing Aircraft Kis Iron Byron Originals Proctor Nick Ziroll Plans hon Ntwsl size scale kit Coming Soon New 10 Super Scale Laser Cit Kits Gee Bee 7 1/3 Scale 94 wingspan Nine other kits Send $200 Catalog RED BARON INTERNATIONAL 710 Cleveland Ste 4 Idaho Falls ID 83402 Call us quote today 208-528-0427
Edition: Model Aviation - 1996/07
Page Numbers: 44, 45, 46, 47, 49, 50, 51, 52, 53
lying-wing aircraft have fascinated long time te young recall seeing large flying-wing bomber TV news 1K program probably covering cancellation Northrop XB-351YB-49 project brief glimpse such graceful aircraft has tayed 40 years As youngster played usual assortment airplanes gliders controlline airplanes simple RC models Fond memories persist father walking Tony Addie Naccaratos Hobby Lobby Burbank California coming out some kits single-channel RC gearfor about $100 Dont tell Mom much spent still recall father saying enjoyed hobby very much though flying success quite limited pursuit education earning living stepped took away hobby day few years ago ran copy book Flying Wings Northrop used bookstore details Northrop XB-35 propeller YB-49 jet flying-wing bombers remembered fascinated once again photographs cutaway drawings book sketched up some approximate dimensions toyed idea building model Maybe would fly Looking through some current model airplane magazines 44 Model Aviation trial-fit leading trailir Internal structure XB-35 Light weight paramount Most strength will come top bottom sheeting 46-ounce XB-35 powered four Silver Streak Electric motors turning Cox 5 x 35 three-blade pusher props Ileeting place covered up nz Top sheeting has completed Access limited motors mounted such can removed servicing Servo installation Rightmost servo has mixer attached Upper link left servo goes steering belicrank Note vents July1996 45 amazed advanced affordable RC equipment become continued look literature flying wings general XB-35 particular times felt remembered airplanes persistence uncovered several excellent publications able determine basic geometry airplane make good estimates some less-obvious parameters determined A2-scale model would smallest practical size would still have good flying characteristics could powered Electric motors felt would easier control gas engines Batteries would provide three five minutes flight Power takeoffs would adequate outstanding tried various motors propellers batteries before deciding proceed design settled included standard balsa-and-Lite Ply construction four Silver Streak motors PeckPolymers turning Cox 5 x 35 three-blade pusher propellers Futaba four-channel radio system speed control small servos Du-Bro V-tail mixer motors would wired parallel high-efficiency wire Sermos connectors would used six- sevencell 1 500-mAh battery pack would power everything wingspan slightly five feet set target weight 40 ounces hoped come under slightly optimistic final flying weight 46 ounces CONSTRUCTION wing built two halves joined middle balsa sheeting applied after halves joined motor mounts propeller-shaft support structures place allows easy access during alignment phase Because models symmetrical airfoil jig required build wing structure cannot lie flat workbench half wing flat root tip main spar has inflection rib 7 requires some extra care spar support elevations flat work surface shown table below elevation main spar rib 7 compensates inflection main spar T structure top bottom surfaces wing center portion made 2 balsa outer portion made 16 sure spars straight flat Pin piece work surface using straightedge guide vertical piece centered cyanoacrylate CyA glue used hold place forming shaped cross-section Attach spars work surface over plans supported elevations shown Supports several intermediate points will also help Spar Support Elevations LocationRootRib 7 Main Spar 00 0125 RearSpar1125075 Tip 00 01875 Cut ribs sheet balsa consistency put pattern inboard surface worthwhile mark top bottom left right pieces prevent confusion almostbut quitesymmetrical Cut main spar notches first place ribs jig locate rear spar location Because INTRODUCINO NFW" PRECISION PROP NUTS AND HUBS Now greater choice quality Tru-Turn products 3 sizes PROP NUTS ranging 5/8 7/8 diameter 2 shapes available stock RIG engine thread sizes 5 sizes PROP HUBS ranging 1 2 diameter 2 shapes new PROP NUTS PROP HUBS addition existing line precision aluminum spinners range 1-1/2 6 over 90 shapes sizes blade configurations new Tru-Turn PROP HUB line complimented extensive line over 70 adapter kits Tru-Turn makes adapter production RIG engine market have adapter problem. help phone call away. See hobby dealer call us direct. /IIZzJ7/TM Made n U S PRECISION MODEL PRODUCTS Romco Manufacturing Inc QUALITY VERSATILITY GREAT LOOKS TY PO Box 836 South Houston Texas 77587 713/ 943-1867 46 Model Aviation i w angles involved would difficult cut everything once maintain alignment spar notches place remove ribs form trim off portions leading trailing edges cut lightening holes Attach ribs bottom spars ribs need inclined 30 off vertical compensate dihedral angle bottom surface Use doubler rib 7 add strength inflection joint appears main spar ribs place top spars can added ribs attached spars leading trailing edges can added leading edge made 4 balsa Trial-fit pieces make sure ribs make firm contact Holding piece place mark top bottom points contacts rib Remove stock draw line root top contact points use guide trim excess material before glued place leading edge has large slot allow cooling air reach motors batteries speed control Cut slot before leading edge attached After glued place carefully trim material Remember structure fairly fragile before covered elevons built balsa similar procedure using leftover pieces ribs Use A6 plywood control horn Line up main wing locate hinge points Glue hinges elevons first used pin point hinges Carl Goldberg Models almost available hinge would work just well Cover elevons 1/32 balsa Sand shape Now elevon hinges can attached main wing use thick CyA epoxy thin CyA can wick hinge joint Elevon throw should 150 wing slots added next could find details used straight pieces 142 balsa sheet glued between ribs included appearance eieases 1995 Warbirds 95 & Birds Prey $1995 EACH S&1I SEND TO AMR PRODUCTIONS P0 BOX 1813 TOMS RIVER NJ 08754 GOT PROBLEM PAT 4221452 Re eta 3acA 1-SOFT MOUNTED ENGINESJLVE IT WITH WRECKING GLOW DRIVER 2-HARD TO GET AT PLUGHEAD 3LARGE/DEEP COWLING FITS ALL STANDARD PLUGS4FINGERS CLOSE TO PROP 5SCALE PROJEC NO HOR E Al OT E FROM K&B 2 STROKE TOHEAOLOCX GLOW DRIVER ENYA 4 STROKECdenct ST#021 SINGLE$995 ST#022 TWIN$1395 LOCK IF EYr AVAThAUZ $100 $200LB MODEL PRODUCTS CORPPO BOX 100 ALLAMUCHY NJ 07820908 850-1508 c4 Mills ls ] rIiITES Precision instruments I FREE COR CATALOG FREE CATALOGChoose over 200 exc t ng k tes LATIIESii unusual & nnovat ye des gns CAMPBELL TOOLS COI Call write catalog todayl 2100-M Selma RdI Wind l 541-0314 Spnngfield OH MA Pearl St Boulder CO 80302 513-3224502 1800 ruiter ordersl L rushless DC Motors & Dita1 d Controller Call 716-662-5651 Brochure & Oderfomi azecm Motors 57 Hawthorne Dr Orchard Park NY 14127 ction full-scale XB-35 used takeoff landings closed during normal flight know would effective model size motor mounts propeller-shaft housings built up 1/i6 plywood used ball bearings custom propeller adapters final shaft supports plywood nylon bearings would also work motor mounts constructed motors can removed servicing Align components best can before gluing place Misalignment can cause excessive vibration leading lack power eventual fatigue failures Spend little extra time balsa webbing between bottom propeller shaft supports trailing edge used absorb normal vibrations very important test-run motors support place next step join two wing halves main strength provided /16-plywood bulkhead main spar Balsa blocks top bottom used fill gaps between bulkhead spars Verify dihedral before gluing everything place Use slow-curing epoxy can adjust components necessary before adhesive sets two leading edges secured Aplywood strengthener 46-plywood rear bulkhead also holds servos Check servos fit properly mixer works before gluing things place Now can install elevon controls cables Secure cables ribs reduce slop improve control Attach main landing-gear support blocks steerable nose wheel support made /6 plywood A6 hole drilled through control cable also needs supported several places improve ground handling cover model build simple jig hold firmly center wingtips Note wing has 50 washout front wingtips point down slightly must built before covering added very OK Cub 049B Lug & radial mount Metal tank High RPM True Carburetion $14 EACH shpg per order 58 years OK engine history 80 page book Includes complete engine listings full color photos COLLECTOR EDITION $1195 p/p Set five color posters $15 year catalog/newsletter $2 accept VISA MASTERCARD OK ENGINES PO BOX 355 MOHAWK NY 13407 July1996 49 .aaaa Sa e1K Rake ASK 181/385 163span wing profile E193/197 weight Ca 115 lbs Roedelniodel ASK 211/45 l65span wing profile E393 weight Ca 115 lbs RawberE DIECUE 1/375 lS7span wing profile HO 30/14 weIght Ca 10 ibs Roebers AEW 24/271/35 157span wing profile HO 30/14 weight Ca ii lbs KrauEe SUlta 1/3 177span wing profile 11Q 3/14 weight Ca 135 ibs Rake DC 2021/35191 span wing profile E203/201/197 weight ca 11 lbs Ripo DC 6001/3 236span scale wing profile weight ca 25 lbs Euchele NimbuE 41/44 237span wing profile HO 3/14 3/13 weight Ca 14 lbs TOWPLANES FriNch PZL 104 WIlgo 1/4 i09span 79 long weight Ca 20-23 lbs aaaaaaa SuilpIanes Unlimited Ltd 63 East 82nd Stre et NYC NY 10028 East coast contact Robin Lehman 212 879-1634 Phone 212 535-5295 Fax West coast contact Mark Foster 213 257-4573 OK Cub 049A Radial mount Nylon tank High RPM True Carburetion important good flight characteristics Make sure correct amount washout present once covered cannot changed covering material 1A2 balsa sheet Start leading edge cover midpoint main spar forward leading edge Use thin CyA hold place Use extra-wide pieces balsa cover aft portion wing can glue two three four-inch-wide pieces together thin CyA Note access hatches enable service motors bellcranks etc cover areas Before both sides covered install dummy antenna wire will enable pull actual antenna through receiver installed Some may find easier install wire motors before wing fully covered although can also done afterward Once covering place remove airplane jigit should very torsionally stiff careful can easily poke finger through thin covering material Cut two air-exhaust hatches top surface shown plans Make hatch covers access openings out 1/3 balsa Secure small screws Use /s-wide strips /32 balsa cover propeller shaft housings Light filler can used necessary main nacelle shape now added wing surface Use A6 balsa bulkheads /16-square balsa runners Cover /32 sheet balsa Sand everything smooth paint model silver automotive trim paint keep weight down use too much paint pilots canopy molded plastic sheet vacuum-formed over wooden block has carved sanded shape Painting surface wing under canopy black attach canopy plastic cement small pilot head can added desired main landing gear formed 3A2 music wire nose gear formed As music wire have wire bender use two door-hinge pins held securely 50 Model Aviation 4On Antiques Military Civilian Helicopters Sailplanes have wA1 brgest aircraft Sxumentation collection 5800 different full color photo studies 1905-1996 33000 3-view line drawings New 1996 Catalog/Guide 188 pages Canada/Mexico $1000 Only $8 Overseas $1500 [A Bob Bankas e Model Research 3114 Yukon Avenue a Mesa CA 92626 79-8058 Look us net http/fimtnet/-]ms/scalehtml TT TOP VIEW ION PLOSOOSRIVER STREARaccess SATANS BLASE PASSER CROSTSOSEL S SO LACENIIT 0 PAREAOEO BRO 30320k SETAL-OUTBOAROMOTOR NOSEGEAR STEERING BELLCRANKCOPS- INSTALLATION SETAIL SECT D-O0550ELOI4 - -4 MOTORSPOELLE II-c.-1 -C- IPANSPOT BLADES PA NSES PROPSSIDE VIEWSECT B-B ITTSPECIFICATIONS SDNSEISTOTEBOSOALBIIS2I N oioN NCSTSTRICTIOSBOLT UP BALSE N PIT ST STCODERINABALSA SOEST CORP CS01ST SPARBA S SOS SASS AKSESOVEAPLE SATANTASRE BLADES 0505 ASIA NOPPOOCEELSNARN AREASTE S PA IN PEAK POTRNEBNSTSBNSEBLISPALOTE AR SIPAIIBBINSA AASISTIITB 000 PAMODEL AVIATION STOP SPOPTORELEARRIC SADROSSSIBAARINORThROP XR-35 PEAK PSLOBEBSONE ROB SAAEO RAKSOPS SETLITESSEELSFLYING WING BOMBER ASSFRONT LAB ABE ADNILSELL PROS5025AK S BSENISTES BT SLSSO S LACE PUPIC_____________ CIETAILINBOARO MOTORDONTDTPTIZSOO S/S/AT ARLATRA OTTOSTAUS BEEMBREBISP P814 1 N D -U 0 D D 0 D 0 IB BALSA SHEETVIAx 14 BALSAV32x VA BALSA V T SPARST E FACING 3B BALSA LEAD NG ESSE 723B GA R 9BALSA CE RB 332 BALSA LIGITENINHEEl HOLES3S2 SO BALSA BEAR SPARS R 7SGO BALSA SHEET R6 R 5332 BALSASB IA _____SHEETBOLSA T E R4 TRIM OUT TO LIGHTEN G32 BALSA SHEET VIA BALSA SHEET VIA BALSA SHEET SHEETIIG GO BALSA STRINGER PROPADAPTOR 9/IASIAA GM NOB 316 DIG HP OTASI THREAS S-AR AA PP ER WING RIE~ -- PLO 77r7T T PECK B/BVB14 SILVER OTBEG ELECTRIC MOlD SERVO BALSATO NOSEAHEEL L E TYPICAL MOTOR MOUNT DETAIL WING IA PLOASAS NOTE SPARS NEES TO BE TAPERED TG FIT IN WING TIP AREA R17 032 BALSA SHEET H 16 R 15 052 BALSA SHEET VA GALS LEVIA BASA SHEET 4 R I-I2-- 222-- Si 1- - IA BALSA SHEET Ru -LI__________ R3R2-5R2 GA BALSA LEASING EDGE R 10 BALsA R-IIIA BALSATRAILINGIHs3/BBALSA Sf32 BALSAESGETAPERED LE SHE ET 0/A SO BALSA STRINGER TTHCAL I//H BALSA F G H i//A BALSA SHEET VA SoEI/IA BALSA SHEET BALSA STRI BAER I/IA BALSA SHEET DI SLOE 2-BA RATS ON BACH D2 I//A PLOWOOD SERVO MOONTINA PLATE ItiTAI ATIANI TOP VIEW VIA GIG MW N 133 SERVOS----BAlSA TE TO SERVOGTO ELEVON SERVO INSTALLATION FRONT VIEW PLO 3/B IS I/B PLO VIA PLO ~ PLY INROARS 3/525 I/IA IN- BAAROOAT- BGABS NACELLE S MODEL AVIATION NOTHROP XB-35 FLYING WING BOMBER BESIANED BC CLARK CALKINS INKED PLANS BC DOE SEMARCO ALL N/BROS SNEER OVA CGAPIJ//GIZEO 4AAB GO OOATCAO SESESOEB B BPB vise about -inch apart Sullivan SkyLite wheels used components have installed check center gravity CG Youll want CG very close location plans indicate Start CG slightly ahead location shown plans Move batteries around adjust CG location dont add weight dont have models final weight should 44-48 ounces Flying flying wings characteristics will similar other normal aircraft CG properly located models elevons have very short moment arm cant correct CG off very much directional stability provided swept wing propellers adequate Pitch stability provided thrustline above CG elevon balancing forces combined symmetrical airfoil wing twist makes easily controlled aircraft did find bad habits smooth runway important will help prevent airplane bouncing around nose quite light runway smooth can use training wheels small wires trailing down wingtipsto help prevent airplane rotating too much tipping side other made several taxi tests get feel steering Slight misalignments main gear will make model hard control will find taxi airplane fairly fast may pop off ground suddenly let off throttle because propeller thrust exerts down force nose wheel let up sudden drag causes nose lift Its quite surprising first time happens prepare model its initial flight make sure batteries fully charged peak-charging best trim elevons up about 30 first flight close off wing slots clear plastic tape supposed improve low-speed handling increase drag making acceleration difficult Youll want takeoff directly wind possible apply full throttle model should get up speed 100 feet might need add little up elevon get off ground CG too far forward might get off does might able climb Once model air climb gradually builds up speed battery motor propeller combination adequate airplane definitely overpowered careful turns until get feel model Turn slowly first symmetrical-airfoil wing little dihedral will prevent airplane righting itself after turn will have turn model back straighten out should able cut power back conserve batteries after 30 seconds Keep airplane close bywith type aircraft easy lose orientation gets too far away Because light wing loading wind gusts will quite noticeable Landing much different other airplanes although such light wing loading does tend float will find decelerates power cut due high propeller area reason best land under power sight sound model air amazing sure brought back memories k Calkins 1907 Alvarado Ave Walnut Creek CA 94596 References Kohn Leo J Flying Wings Northrop 1974 Maloney Edward T Northrop Flying Wings 1975 Wooldridge ET Winged Wonders Story Flying Wings 1983 TVITT Wing Thing Tailless aircraft group Box 20430 El Cajon CA 92021 II Tfle maII oI SpecialistsSENDI FOR YOUR IOVER 2000 TOOLS & ACCESSORIES COPY Brand Names. Unusual Items.TODAY Exclusive Products savings upI Ito 60% designed make project Ieasier enjoyable professional I TO ORDER Send $100 coupon name address ADDRESS_____________________________________________________[v33][b15482997132525540]] MicroMark 2058 Snyder AveI Berkeley Heights NJ 07922-1595CiTY_____________________________ STATE_________ ZIP____________ II Ba Large tube modal 5995 Gats fingers sway prop Mounts anywhere model must scale models eliminates need hole cowl needle valve needle lves 5 Easy dieap fix broken Get engine ruimingperfedlly countsin air ever again blows flight because bad mixture sdtin& in-flight engine shutoff smoke valve Top leror used tIn setup valve ean placsd enider rowi m fssdag Extra savo & adi diarusel required Soth vslvu gusranteed require no nigine modifications Just opine needle valve leave alone inst needle valve off ranove wanL Ranote & in-flight valvin work glow-ping asginra whidi ma use medium 3132 id fled tubing Lange tube lM id models viny large & some rang glow aiginra Contains task thai line leaks dont have feel-proof tank ares Makes tank isalaltation caner Leaks trapped p1551k bag sealed 13/16 hole firewall tubber cosuixeasion ring Keeps feel oil firewall oat feselage use glow feel Patent pendin& LekCatcher plus 13/16 drill bIt drilling firewall hole required LeakCatcher $295 1nsla-cure thin CA lasts-cure n gap filling CA 1 ox $395 2 ox $625 Odorless Super-Golds thin CA Super-Cold filling CA ox S795 2 ox S1395 lasts-Set CA Accelerator 2 ox $395 order call 1400 765-0474 Visa & MC accepted Ask aboet ow club discounts send check MO Atlantic it/C Products Inc P0 Box 523007 Springfield VA 22152 Free shipping orders over $20 Add $350 shipping handling ordors snidor $20 vArwidonts add 45% sales tax Dmlmmouiries invited July1996 53 Alantic RIC mixture valves safety convenience Get freedom safely control engines mixture needle anywhere model flight using new patented principle No TIME LettheRed Baron Building building service specializing scale RC Aircraft Warblrds aera Classic Aircraft Racing Aircraft Kis Iron Byron Originals Proctor Nick Ziroll Plans hon Ntwsl size scale kit Coming Soon New 10 Super Scale Laser Cit Kits Gee Bee 7 1/3 Scale 94 wingspan Nine other kits Send $200 Catalog RED BARON INTERNATIONAL 710 Cleveland Ste 4 Idaho Falls ID 83402 Call us quote today 208-528-0427
Edition: Model Aviation - 1996/07
Page Numbers: 44, 45, 46, 47, 49, 50, 51, 52, 53
lying-wing aircraft have fascinated long time te young recall seeing large flying-wing bomber TV news 1K program probably covering cancellation Northrop XB-351YB-49 project brief glimpse such graceful aircraft has tayed 40 years As youngster played usual assortment airplanes gliders controlline airplanes simple RC models Fond memories persist father walking Tony Addie Naccaratos Hobby Lobby Burbank California coming out some kits single-channel RC gearfor about $100 Dont tell Mom much spent still recall father saying enjoyed hobby very much though flying success quite limited pursuit education earning living stepped took away hobby day few years ago ran copy book Flying Wings Northrop used bookstore details Northrop XB-35 propeller YB-49 jet flying-wing bombers remembered fascinated once again photographs cutaway drawings book sketched up some approximate dimensions toyed idea building model Maybe would fly Looking through some current model airplane magazines 44 Model Aviation trial-fit leading trailir Internal structure XB-35 Light weight paramount Most strength will come top bottom sheeting 46-ounce XB-35 powered four Silver Streak Electric motors turning Cox 5 x 35 three-blade pusher props Ileeting place covered up nz Top sheeting has completed Access limited motors mounted such can removed servicing Servo installation Rightmost servo has mixer attached Upper link left servo goes steering belicrank Note vents July1996 45 amazed advanced affordable RC equipment become continued look literature flying wings general XB-35 particular times felt remembered airplanes persistence uncovered several excellent publications able determine basic geometry airplane make good estimates some less-obvious parameters determined A2-scale model would smallest practical size would still have good flying characteristics could powered Electric motors felt would easier control gas engines Batteries would provide three five minutes flight Power takeoffs would adequate outstanding tried various motors propellers batteries before deciding proceed design settled included standard balsa-and-Lite Ply construction four Silver Streak motors PeckPolymers turning Cox 5 x 35 three-blade pusher propellers Futaba four-channel radio system speed control small servos Du-Bro V-tail mixer motors would wired parallel high-efficiency wire Sermos connectors would used six- sevencell 1 500-mAh battery pack would power everything wingspan slightly five feet set target weight 40 ounces hoped come under slightly optimistic final flying weight 46 ounces CONSTRUCTION wing built two halves joined middle balsa sheeting applied after halves joined motor mounts propeller-shaft support structures place allows easy access during alignment phase Because models symmetrical airfoil jig required build wing structure cannot lie flat workbench half wing flat root tip main spar has inflection rib 7 requires some extra care spar support elevations flat work surface shown table below elevation main spar rib 7 compensates inflection main spar T structure top bottom surfaces wing center portion made 2 balsa outer portion made 16 sure spars straight flat Pin piece work surface using straightedge guide vertical piece centered cyanoacrylate CyA glue used hold place forming shaped cross-section Attach spars work surface over plans supported elevations shown Supports several intermediate points will also help Spar Support Elevations LocationRootRib 7 Main Spar 00 0125 RearSpar1125075 Tip 00 01875 Cut ribs sheet balsa consistency put pattern inboard surface worthwhile mark top bottom left right pieces prevent confusion almostbut quitesymmetrical Cut main spar notches first place ribs jig locate rear spar location Because INTRODUCINO NFW" PRECISION PROP NUTS AND HUBS Now greater choice quality Tru-Turn products 3 sizes PROP NUTS ranging 5/8 7/8 diameter 2 shapes available stock RIG engine thread sizes 5 sizes PROP HUBS ranging 1 2 diameter 2 shapes new PROP NUTS PROP HUBS addition existing line precision aluminum spinners range 1-1/2 6 over 90 shapes sizes blade configurations new Tru-Turn PROP HUB line complimented extensive line over 70 adapter kits Tru-Turn makes adapter production RIG engine market have adapter problem. help phone call away. See hobby dealer call us direct. /IIZzJ7/TM Made n U S PRECISION MODEL PRODUCTS Romco Manufacturing Inc QUALITY VERSATILITY GREAT LOOKS TY PO Box 836 South Houston Texas 77587 713/ 943-1867 46 Model Aviation i w angles involved would difficult cut everything once maintain alignment spar notches place remove ribs form trim off portions leading trailing edges cut lightening holes Attach ribs bottom spars ribs need inclined 30 off vertical compensate dihedral angle bottom surface Use doubler rib 7 add strength inflection joint appears main spar ribs place top spars can added ribs attached spars leading trailing edges can added leading edge made 4 balsa Trial-fit pieces make sure ribs make firm contact Holding piece place mark top bottom points contacts rib Remove stock draw line root top contact points use guide trim excess material before glued place leading edge has large slot allow cooling air reach motors batteries speed control Cut slot before leading edge attached After glued place carefully trim material Remember structure fairly fragile before covered elevons built balsa similar procedure using leftover pieces ribs Use A6 plywood control horn Line up main wing locate hinge points Glue hinges elevons first used pin point hinges Carl Goldberg Models almost available hinge would work just well Cover elevons 1/32 balsa Sand shape Now elevon hinges can attached main wing use thick CyA epoxy thin CyA can wick hinge joint Elevon throw should 150 wing slots added next could find details used straight pieces 142 balsa sheet glued between ribs included appearance eieases 1995 Warbirds 95 & Birds Prey $1995 EACH S&1I SEND TO AMR PRODUCTIONS P0 BOX 1813 TOMS RIVER NJ 08754 GOT PROBLEM PAT 4221452 Re eta 3acA 1-SOFT MOUNTED ENGINESJLVE IT WITH WRECKING GLOW DRIVER 2-HARD TO GET AT PLUGHEAD 3LARGE/DEEP COWLING FITS ALL STANDARD PLUGS4FINGERS CLOSE TO PROP 5SCALE PROJEC NO HOR E Al OT E FROM K&B 2 STROKE TOHEAOLOCX GLOW DRIVER ENYA 4 STROKECdenct ST#021 SINGLE$995 ST#022 TWIN$1395 LOCK IF EYr AVAThAUZ $100 $200LB MODEL PRODUCTS CORPPO BOX 100 ALLAMUCHY NJ 07820908 850-1508 c4 Mills ls ] rIiITES Precision instruments I FREE COR CATALOG FREE CATALOGChoose over 200 exc t ng k tes LATIIESii unusual & nnovat ye des gns CAMPBELL TOOLS COI Call write catalog todayl 2100-M Selma RdI Wind l 541-0314 Spnngfield OH MA Pearl St Boulder CO 80302 513-3224502 1800 ruiter ordersl L rushless DC Motors & Dita1 d Controller Call 716-662-5651 Brochure & Oderfomi azecm Motors 57 Hawthorne Dr Orchard Park NY 14127 ction full-scale XB-35 used takeoff landings closed during normal flight know would effective model size motor mounts propeller-shaft housings built up 1/i6 plywood used ball bearings custom propeller adapters final shaft supports plywood nylon bearings would also work motor mounts constructed motors can removed servicing Align components best can before gluing place Misalignment can cause excessive vibration leading lack power eventual fatigue failures Spend little extra time balsa webbing between bottom propeller shaft supports trailing edge used absorb normal vibrations very important test-run motors support place next step join two wing halves main strength provided /16-plywood bulkhead main spar Balsa blocks top bottom used fill gaps between bulkhead spars Verify dihedral before gluing everything place Use slow-curing epoxy can adjust components necessary before adhesive sets two leading edges secured Aplywood strengthener 46-plywood rear bulkhead also holds servos Check servos fit properly mixer works before gluing things place Now can install elevon controls cables Secure cables ribs reduce slop improve control Attach main landing-gear support blocks steerable nose wheel support made /6 plywood A6 hole drilled through control cable also needs supported several places improve ground handling cover model build simple jig hold firmly center wingtips Note wing has 50 washout front wingtips point down slightly must built before covering added very OK Cub 049B Lug & radial mount Metal tank High RPM True Carburetion $14 EACH shpg per order 58 years OK engine history 80 page book Includes complete engine listings full color photos COLLECTOR EDITION $1195 p/p Set five color posters $15 year catalog/newsletter $2 accept VISA MASTERCARD OK ENGINES PO BOX 355 MOHAWK NY 13407 July1996 49 .aaaa Sa e1K Rake ASK 181/385 163span wing profile E193/197 weight Ca 115 lbs Roedelniodel ASK 211/45 l65span wing profile E393 weight Ca 115 lbs RawberE DIECUE 1/375 lS7span wing profile HO 30/14 weIght Ca 10 ibs Roebers AEW 24/271/35 157span wing profile HO 30/14 weight Ca ii lbs KrauEe SUlta 1/3 177span wing profile 11Q 3/14 weight Ca 135 ibs Rake DC 2021/35191 span wing profile E203/201/197 weight ca 11 lbs Ripo DC 6001/3 236span scale wing profile weight ca 25 lbs Euchele NimbuE 41/44 237span wing profile HO 3/14 3/13 weight Ca 14 lbs TOWPLANES FriNch PZL 104 WIlgo 1/4 i09span 79 long weight Ca 20-23 lbs aaaaaaa SuilpIanes Unlimited Ltd 63 East 82nd Stre et NYC NY 10028 East coast contact Robin Lehman 212 879-1634 Phone 212 535-5295 Fax West coast contact Mark Foster 213 257-4573 OK Cub 049A Radial mount Nylon tank High RPM True Carburetion important good flight characteristics Make sure correct amount washout present once covered cannot changed covering material 1A2 balsa sheet Start leading edge cover midpoint main spar forward leading edge Use thin CyA hold place Use extra-wide pieces balsa cover aft portion wing can glue two three four-inch-wide pieces together thin CyA Note access hatches enable service motors bellcranks etc cover areas Before both sides covered install dummy antenna wire will enable pull actual antenna through receiver installed Some may find easier install wire motors before wing fully covered although can also done afterward Once covering place remove airplane jigit should very torsionally stiff careful can easily poke finger through thin covering material Cut two air-exhaust hatches top surface shown plans Make hatch covers access openings out 1/3 balsa Secure small screws Use /s-wide strips /32 balsa cover propeller shaft housings Light filler can used necessary main nacelle shape now added wing surface Use A6 balsa bulkheads /16-square balsa runners Cover /32 sheet balsa Sand everything smooth paint model silver automotive trim paint keep weight down use too much paint pilots canopy molded plastic sheet vacuum-formed over wooden block has carved sanded shape Painting surface wing under canopy black attach canopy plastic cement small pilot head can added desired main landing gear formed 3A2 music wire nose gear formed As music wire have wire bender use two door-hinge pins held securely 50 Model Aviation 4On Antiques Military Civilian Helicopters Sailplanes have wA1 brgest aircraft Sxumentation collection 5800 different full color photo studies 1905-1996 33000 3-view line drawings New 1996 Catalog/Guide 188 pages Canada/Mexico $1000 Only $8 Overseas $1500 [A Bob Bankas e Model Research 3114 Yukon Avenue a Mesa CA 92626 79-8058 Look us net http/fimtnet/-]ms/scalehtml TT TOP VIEW ION PLOSOOSRIVER STREARaccess SATANS BLASE PASSER CROSTSOSEL S SO LACENIIT 0 PAREAOEO BRO 30320k SETAL-OUTBOAROMOTOR NOSEGEAR STEERING BELLCRANKCOPS- INSTALLATION SETAIL SECT D-O0550ELOI4 - -4 MOTORSPOELLE II-c.-1 -C- IPANSPOT BLADES PA NSES PROPSSIDE VIEWSECT B-B ITTSPECIFICATIONS SDNSEISTOTEBOSOALBIIS2I N oioN NCSTSTRICTIOSBOLT UP BALSE N PIT ST STCODERINABALSA SOEST CORP CS01ST SPARBA S SOS SASS AKSESOVEAPLE SATANTASRE BLADES 0505 ASIA NOPPOOCEELSNARN AREASTE S PA IN PEAK POTRNEBNSTSBNSEBLISPALOTE AR SIPAIIBBINSA AASISTIITB 000 PAMODEL AVIATION STOP SPOPTORELEARRIC SADROSSSIBAARINORThROP XR-35 PEAK PSLOBEBSONE ROB SAAEO RAKSOPS SETLITESSEELSFLYING WING BOMBER ASSFRONT LAB ABE ADNILSELL PROS5025AK S BSENISTES BT SLSSO S LACE PUPIC_____________ CIETAILINBOARO MOTORDONTDTPTIZSOO S/S/AT ARLATRA OTTOSTAUS BEEMBREBISP P814 1 N D -U 0 D D 0 D 0 IB BALSA SHEETVIAx 14 BALSAV32x VA BALSA V T SPARST E FACING 3B BALSA LEAD NG ESSE 723B GA R 9BALSA CE RB 332 BALSA LIGITENINHEEl HOLES3S2 SO BALSA BEAR SPARS R 7SGO BALSA SHEET R6 R 5332 BALSASB IA _____SHEETBOLSA T E R4 TRIM OUT TO LIGHTEN G32 BALSA SHEET VIA BALSA SHEET VIA BALSA SHEET SHEETIIG GO BALSA STRINGER PROPADAPTOR 9/IASIAA GM NOB 316 DIG HP OTASI THREAS S-AR AA PP ER WING RIE~ -- PLO 77r7T T PECK B/BVB14 SILVER OTBEG ELECTRIC MOlD SERVO BALSATO NOSEAHEEL L E TYPICAL MOTOR MOUNT DETAIL WING IA PLOASAS NOTE SPARS NEES TO BE TAPERED TG FIT IN WING TIP AREA R17 032 BALSA SHEET H 16 R 15 052 BALSA SHEET VA GALS LEVIA BASA SHEET 4 R I-I2-- 222-- Si 1- - IA BALSA SHEET Ru -LI__________ R3R2-5R2 GA BALSA LEASING EDGE R 10 BALsA R-IIIA BALSATRAILINGIHs3/BBALSA Sf32 BALSAESGETAPERED LE SHE ET 0/A SO BALSA STRINGER TTHCAL I//H BALSA F G H i//A BALSA SHEET VA SoEI/IA BALSA SHEET BALSA STRI BAER I/IA BALSA SHEET DI SLOE 2-BA RATS ON BACH D2 I//A PLOWOOD SERVO MOONTINA PLATE ItiTAI ATIANI TOP VIEW VIA GIG MW N 133 SERVOS----BAlSA TE TO SERVOGTO ELEVON SERVO INSTALLATION FRONT VIEW PLO 3/B IS I/B PLO VIA PLO ~ PLY INROARS 3/525 I/IA IN- BAAROOAT- BGABS NACELLE S MODEL AVIATION NOTHROP XB-35 FLYING WING BOMBER BESIANED BC CLARK CALKINS INKED PLANS BC DOE SEMARCO ALL N/BROS SNEER OVA CGAPIJ//GIZEO 4AAB GO OOATCAO SESESOEB B BPB vise about -inch apart Sullivan SkyLite wheels used components have installed check center gravity CG Youll want CG very close location plans indicate Start CG slightly ahead location shown plans Move batteries around adjust CG location dont add weight dont have models final weight should 44-48 ounces Flying flying wings characteristics will similar other normal aircraft CG properly located models elevons have very short moment arm cant correct CG off very much directional stability provided swept wing propellers adequate Pitch stability provided thrustline above CG elevon balancing forces combined symmetrical airfoil wing twist makes easily controlled aircraft did find bad habits smooth runway important will help prevent airplane bouncing around nose quite light runway smooth can use training wheels small wires trailing down wingtipsto help prevent airplane rotating too much tipping side other made several taxi tests get feel steering Slight misalignments main gear will make model hard control will find taxi airplane fairly fast may pop off ground suddenly let off throttle because propeller thrust exerts down force nose wheel let up sudden drag causes nose lift Its quite surprising first time happens prepare model its initial flight make sure batteries fully charged peak-charging best trim elevons up about 30 first flight close off wing slots clear plastic tape supposed improve low-speed handling increase drag making acceleration difficult Youll want takeoff directly wind possible apply full throttle model should get up speed 100 feet might need add little up elevon get off ground CG too far forward might get off does might able climb Once model air climb gradually builds up speed battery motor propeller combination adequate airplane definitely overpowered careful turns until get feel model Turn slowly first symmetrical-airfoil wing little dihedral will prevent airplane righting itself after turn will have turn model back straighten out should able cut power back conserve batteries after 30 seconds Keep airplane close bywith type aircraft easy lose orientation gets too far away Because light wing loading wind gusts will quite noticeable Landing much different other airplanes although such light wing loading does tend float will find decelerates power cut due high propeller area reason best land under power sight sound model air amazing sure brought back memories k Calkins 1907 Alvarado Ave Walnut Creek CA 94596 References Kohn Leo J Flying Wings Northrop 1974 Maloney Edward T Northrop Flying Wings 1975 Wooldridge ET Winged Wonders Story Flying Wings 1983 TVITT Wing Thing Tailless aircraft group Box 20430 El Cajon CA 92021 II Tfle maII oI SpecialistsSENDI FOR YOUR IOVER 2000 TOOLS & ACCESSORIES COPY Brand Names. Unusual Items.TODAY Exclusive Products savings upI Ito 60% designed make project Ieasier enjoyable professional I TO ORDER Send $100 coupon name address ADDRESS_____________________________________________________[v33][b15482997132525540]] MicroMark 2058 Snyder AveI Berkeley Heights NJ 07922-1595CiTY_____________________________ STATE_________ ZIP____________ II Ba Large tube modal 5995 Gats fingers sway prop Mounts anywhere model must scale models eliminates need hole cowl needle valve needle lves 5 Easy dieap fix broken Get engine ruimingperfedlly countsin air ever again blows flight because bad mixture sdtin& in-flight engine shutoff smoke valve Top leror used tIn setup valve ean placsd enider rowi m fssdag Extra savo & adi diarusel required Soth vslvu gusranteed require no nigine modifications Just opine needle valve leave alone inst needle valve off ranove wanL Ranote & in-flight valvin work glow-ping asginra whidi ma use medium 3132 id fled tubing Lange tube lM id models viny large & some rang glow aiginra Contains task thai line leaks dont have feel-proof tank ares Makes tank isalaltation caner Leaks trapped p1551k bag sealed 13/16 hole firewall tubber cosuixeasion ring Keeps feel oil firewall oat feselage use glow feel Patent pendin& LekCatcher plus 13/16 drill bIt drilling firewall hole required LeakCatcher $295 1nsla-cure thin CA lasts-cure n gap filling CA 1 ox $395 2 ox $625 Odorless Super-Golds thin CA Super-Cold filling CA ox S795 2 ox S1395 lasts-Set CA Accelerator 2 ox $395 order call 1400 765-0474 Visa & MC accepted Ask aboet ow club discounts send check MO Atlantic it/C Products Inc P0 Box 523007 Springfield VA 22152 Free shipping orders over $20 Add $350 shipping handling ordors snidor $20 vArwidonts add 45% sales tax Dmlmmouiries invited July1996 53 Alantic RIC mixture valves safety convenience Get freedom safely control engines mixture needle anywhere model flight using new patented principle No TIME LettheRed Baron Building building service specializing scale RC Aircraft Warblrds aera Classic Aircraft Racing Aircraft Kis Iron Byron Originals Proctor Nick Ziroll Plans hon Ntwsl size scale kit Coming Soon New 10 Super Scale Laser Cit Kits Gee Bee 7 1/3 Scale 94 wingspan Nine other kits Send $200 Catalog RED BARON INTERNATIONAL 710 Cleveland Ste 4 Idaho Falls ID 83402 Call us quote today 208-528-0427
Edition: Model Aviation - 1996/07
Page Numbers: 44, 45, 46, 47, 49, 50, 51, 52, 53
lying-wing aircraft have fascinated long time te young recall seeing large flying-wing bomber TV news 1K program probably covering cancellation Northrop XB-351YB-49 project brief glimpse such graceful aircraft has tayed 40 years As youngster played usual assortment airplanes gliders controlline airplanes simple RC models Fond memories persist father walking Tony Addie Naccaratos Hobby Lobby Burbank California coming out some kits single-channel RC gearfor about $100 Dont tell Mom much spent still recall father saying enjoyed hobby very much though flying success quite limited pursuit education earning living stepped took away hobby day few years ago ran copy book Flying Wings Northrop used bookstore details Northrop XB-35 propeller YB-49 jet flying-wing bombers remembered fascinated once again photographs cutaway drawings book sketched up some approximate dimensions toyed idea building model Maybe would fly Looking through some current model airplane magazines 44 Model Aviation trial-fit leading trailir Internal structure XB-35 Light weight paramount Most strength will come top bottom sheeting 46-ounce XB-35 powered four Silver Streak Electric motors turning Cox 5 x 35 three-blade pusher props Ileeting place covered up nz Top sheeting has completed Access limited motors mounted such can removed servicing Servo installation Rightmost servo has mixer attached Upper link left servo goes steering belicrank Note vents July1996 45 amazed advanced affordable RC equipment become continued look literature flying wings general XB-35 particular times felt remembered airplanes persistence uncovered several excellent publications able determine basic geometry airplane make good estimates some less-obvious parameters determined A2-scale model would smallest practical size would still have good flying characteristics could powered Electric motors felt would easier control gas engines Batteries would provide three five minutes flight Power takeoffs would adequate outstanding tried various motors propellers batteries before deciding proceed design settled included standard balsa-and-Lite Ply construction four Silver Streak motors PeckPolymers turning Cox 5 x 35 three-blade pusher propellers Futaba four-channel radio system speed control small servos Du-Bro V-tail mixer motors would wired parallel high-efficiency wire Sermos connectors would used six- sevencell 1 500-mAh battery pack would power everything wingspan slightly five feet set target weight 40 ounces hoped come under slightly optimistic final flying weight 46 ounces CONSTRUCTION wing built two halves joined middle balsa sheeting applied after halves joined motor mounts propeller-shaft support structures place allows easy access during alignment phase Because models symmetrical airfoil jig required build wing structure cannot lie flat workbench half wing flat root tip main spar has inflection rib 7 requires some extra care spar support elevations flat work surface shown table below elevation main spar rib 7 compensates inflection main spar T structure top bottom surfaces wing center portion made 2 balsa outer portion made 16 sure spars straight flat Pin piece work surface using straightedge guide vertical piece centered cyanoacrylate CyA glue used hold place forming shaped cross-section Attach spars work surface over plans supported elevations shown Supports several intermediate points will also help Spar Support Elevations LocationRootRib 7 Main Spar 00 0125 RearSpar1125075 Tip 00 01875 Cut ribs sheet balsa consistency put pattern inboard surface worthwhile mark top bottom left right pieces prevent confusion almostbut quitesymmetrical Cut main spar notches first place ribs jig locate rear spar location Because INTRODUCINO NFW" PRECISION PROP NUTS AND HUBS Now greater choice quality Tru-Turn products 3 sizes PROP NUTS ranging 5/8 7/8 diameter 2 shapes available stock RIG engine thread sizes 5 sizes PROP HUBS ranging 1 2 diameter 2 shapes new PROP NUTS PROP HUBS addition existing line precision aluminum spinners range 1-1/2 6 over 90 shapes sizes blade configurations new Tru-Turn PROP HUB line complimented extensive line over 70 adapter kits Tru-Turn makes adapter production RIG engine market have adapter problem. help phone call away. See hobby dealer call us direct. /IIZzJ7/TM Made n U S PRECISION MODEL PRODUCTS Romco Manufacturing Inc QUALITY VERSATILITY GREAT LOOKS TY PO Box 836 South Houston Texas 77587 713/ 943-1867 46 Model Aviation i w angles involved would difficult cut everything once maintain alignment spar notches place remove ribs form trim off portions leading trailing edges cut lightening holes Attach ribs bottom spars ribs need inclined 30 off vertical compensate dihedral angle bottom surface Use doubler rib 7 add strength inflection joint appears main spar ribs place top spars can added ribs attached spars leading trailing edges can added leading edge made 4 balsa Trial-fit pieces make sure ribs make firm contact Holding piece place mark top bottom points contacts rib Remove stock draw line root top contact points use guide trim excess material before glued place leading edge has large slot allow cooling air reach motors batteries speed control Cut slot before leading edge attached After glued place carefully trim material Remember structure fairly fragile before covered elevons built balsa similar procedure using leftover pieces ribs Use A6 plywood control horn Line up main wing locate hinge points Glue hinges elevons first used pin point hinges Carl Goldberg Models almost available hinge would work just well Cover elevons 1/32 balsa Sand shape Now elevon hinges can attached main wing use thick CyA epoxy thin CyA can wick hinge joint Elevon throw should 150 wing slots added next could find details used straight pieces 142 balsa sheet glued between ribs included appearance eieases 1995 Warbirds 95 & Birds Prey $1995 EACH S&1I SEND TO AMR PRODUCTIONS P0 BOX 1813 TOMS RIVER NJ 08754 GOT PROBLEM PAT 4221452 Re eta 3acA 1-SOFT MOUNTED ENGINESJLVE IT WITH WRECKING GLOW DRIVER 2-HARD TO GET AT PLUGHEAD 3LARGE/DEEP COWLING FITS ALL STANDARD PLUGS4FINGERS CLOSE TO PROP 5SCALE PROJEC NO HOR E Al OT E FROM K&B 2 STROKE TOHEAOLOCX GLOW DRIVER ENYA 4 STROKECdenct ST#021 SINGLE$995 ST#022 TWIN$1395 LOCK IF EYr AVAThAUZ $100 $200LB MODEL PRODUCTS CORPPO BOX 100 ALLAMUCHY NJ 07820908 850-1508 c4 Mills ls ] rIiITES Precision instruments I FREE COR CATALOG FREE CATALOGChoose over 200 exc t ng k tes LATIIESii unusual & nnovat ye des gns CAMPBELL TOOLS COI Call write catalog todayl 2100-M Selma RdI Wind l 541-0314 Spnngfield OH MA Pearl St Boulder CO 80302 513-3224502 1800 ruiter ordersl L rushless DC Motors & Dita1 d Controller Call 716-662-5651 Brochure & Oderfomi azecm Motors 57 Hawthorne Dr Orchard Park NY 14127 ction full-scale XB-35 used takeoff landings closed during normal flight know would effective model size motor mounts propeller-shaft housings built up 1/i6 plywood used ball bearings custom propeller adapters final shaft supports plywood nylon bearings would also work motor mounts constructed motors can removed servicing Align components best can before gluing place Misalignment can cause excessive vibration leading lack power eventual fatigue failures Spend little extra time balsa webbing between bottom propeller shaft supports trailing edge used absorb normal vibrations very important test-run motors support place next step join two wing halves main strength provided /16-plywood bulkhead main spar Balsa blocks top bottom used fill gaps between bulkhead spars Verify dihedral before gluing everything place Use slow-curing epoxy can adjust components necessary before adhesive sets two leading edges secured Aplywood strengthener 46-plywood rear bulkhead also holds servos Check servos fit properly mixer works before gluing things place Now can install elevon controls cables Secure cables ribs reduce slop improve control Attach main landing-gear support blocks steerable nose wheel support made /6 plywood A6 hole drilled through control cable also needs supported several places improve ground handling cover model build simple jig hold firmly center wingtips Note wing has 50 washout front wingtips point down slightly must built before covering added very OK Cub 049B Lug & radial mount Metal tank High RPM True Carburetion $14 EACH shpg per order 58 years OK engine history 80 page book Includes complete engine listings full color photos COLLECTOR EDITION $1195 p/p Set five color posters $15 year catalog/newsletter $2 accept VISA MASTERCARD OK ENGINES PO BOX 355 MOHAWK NY 13407 July1996 49 .aaaa Sa e1K Rake ASK 181/385 163span wing profile E193/197 weight Ca 115 lbs Roedelniodel ASK 211/45 l65span wing profile E393 weight Ca 115 lbs RawberE DIECUE 1/375 lS7span wing profile HO 30/14 weIght Ca 10 ibs Roebers AEW 24/271/35 157span wing profile HO 30/14 weight Ca ii lbs KrauEe SUlta 1/3 177span wing profile 11Q 3/14 weight Ca 135 ibs Rake DC 2021/35191 span wing profile E203/201/197 weight ca 11 lbs Ripo DC 6001/3 236span scale wing profile weight ca 25 lbs Euchele NimbuE 41/44 237span wing profile HO 3/14 3/13 weight Ca 14 lbs TOWPLANES FriNch PZL 104 WIlgo 1/4 i09span 79 long weight Ca 20-23 lbs aaaaaaa SuilpIanes Unlimited Ltd 63 East 82nd Stre et NYC NY 10028 East coast contact Robin Lehman 212 879-1634 Phone 212 535-5295 Fax West coast contact Mark Foster 213 257-4573 OK Cub 049A Radial mount Nylon tank High RPM True Carburetion important good flight characteristics Make sure correct amount washout present once covered cannot changed covering material 1A2 balsa sheet Start leading edge cover midpoint main spar forward leading edge Use thin CyA hold place Use extra-wide pieces balsa cover aft portion wing can glue two three four-inch-wide pieces together thin CyA Note access hatches enable service motors bellcranks etc cover areas Before both sides covered install dummy antenna wire will enable pull actual antenna through receiver installed Some may find easier install wire motors before wing fully covered although can also done afterward Once covering place remove airplane jigit should very torsionally stiff careful can easily poke finger through thin covering material Cut two air-exhaust hatches top surface shown plans Make hatch covers access openings out 1/3 balsa Secure small screws Use /s-wide strips /32 balsa cover propeller shaft housings Light filler can used necessary main nacelle shape now added wing surface Use A6 balsa bulkheads /16-square balsa runners Cover /32 sheet balsa Sand everything smooth paint model silver automotive trim paint keep weight down use too much paint pilots canopy molded plastic sheet vacuum-formed over wooden block has carved sanded shape Painting surface wing under canopy black attach canopy plastic cement small pilot head can added desired main landing gear formed 3A2 music wire nose gear formed As music wire have wire bender use two door-hinge pins held securely 50 Model Aviation 4On Antiques Military Civilian Helicopters Sailplanes have wA1 brgest aircraft Sxumentation collection 5800 different full color photo studies 1905-1996 33000 3-view line drawings New 1996 Catalog/Guide 188 pages Canada/Mexico $1000 Only $8 Overseas $1500 [A Bob Bankas e Model Research 3114 Yukon Avenue a Mesa CA 92626 79-8058 Look us net http/fimtnet/-]ms/scalehtml TT TOP VIEW ION PLOSOOSRIVER STREARaccess SATANS BLASE PASSER CROSTSOSEL S SO LACENIIT 0 PAREAOEO BRO 30320k SETAL-OUTBOAROMOTOR NOSEGEAR STEERING BELLCRANKCOPS- INSTALLATION SETAIL SECT D-O0550ELOI4 - -4 MOTORSPOELLE II-c.-1 -C- IPANSPOT BLADES PA NSES PROPSSIDE VIEWSECT B-B ITTSPECIFICATIONS SDNSEISTOTEBOSOALBIIS2I N oioN NCSTSTRICTIOSBOLT UP BALSE N PIT ST STCODERINABALSA SOEST CORP CS01ST SPARBA S SOS SASS AKSESOVEAPLE SATANTASRE BLADES 0505 ASIA NOPPOOCEELSNARN AREASTE S PA IN PEAK POTRNEBNSTSBNSEBLISPALOTE AR SIPAIIBBINSA AASISTIITB 000 PAMODEL AVIATION STOP SPOPTORELEARRIC SADROSSSIBAARINORThROP XR-35 PEAK PSLOBEBSONE ROB SAAEO RAKSOPS SETLITESSEELSFLYING WING BOMBER ASSFRONT LAB ABE ADNILSELL PROS5025AK S BSENISTES BT SLSSO S LACE PUPIC_____________ CIETAILINBOARO MOTORDONTDTPTIZSOO S/S/AT ARLATRA OTTOSTAUS BEEMBREBISP P814 1 N D -U 0 D D 0 D 0 IB BALSA SHEETVIAx 14 BALSAV32x VA BALSA V T SPARST E FACING 3B BALSA LEAD NG ESSE 723B GA R 9BALSA CE RB 332 BALSA LIGITENINHEEl HOLES3S2 SO BALSA BEAR SPARS R 7SGO BALSA SHEET R6 R 5332 BALSASB IA _____SHEETBOLSA T E R4 TRIM OUT TO LIGHTEN G32 BALSA SHEET VIA BALSA SHEET VIA BALSA SHEET SHEETIIG GO BALSA STRINGER PROPADAPTOR 9/IASIAA GM NOB 316 DIG HP OTASI THREAS S-AR AA PP ER WING RIE~ -- PLO 77r7T T PECK B/BVB14 SILVER OTBEG ELECTRIC MOlD SERVO BALSATO NOSEAHEEL L E TYPICAL MOTOR MOUNT DETAIL WING IA PLOASAS NOTE SPARS NEES TO BE TAPERED TG FIT IN WING TIP AREA R17 032 BALSA SHEET H 16 R 15 052 BALSA SHEET VA GALS LEVIA BASA SHEET 4 R I-I2-- 222-- Si 1- - IA BALSA SHEET Ru -LI__________ R3R2-5R2 GA BALSA LEASING EDGE R 10 BALsA R-IIIA BALSATRAILINGIHs3/BBALSA Sf32 BALSAESGETAPERED LE SHE ET 0/A SO BALSA STRINGER TTHCAL I//H BALSA F G H i//A BALSA SHEET VA SoEI/IA BALSA SHEET BALSA STRI BAER I/IA BALSA SHEET DI SLOE 2-BA RATS ON BACH D2 I//A PLOWOOD SERVO MOONTINA PLATE ItiTAI ATIANI TOP VIEW VIA GIG MW N 133 SERVOS----BAlSA TE TO SERVOGTO ELEVON SERVO INSTALLATION FRONT VIEW PLO 3/B IS I/B PLO VIA PLO ~ PLY INROARS 3/525 I/IA IN- BAAROOAT- BGABS NACELLE S MODEL AVIATION NOTHROP XB-35 FLYING WING BOMBER BESIANED BC CLARK CALKINS INKED PLANS BC DOE SEMARCO ALL N/BROS SNEER OVA CGAPIJ//GIZEO 4AAB GO OOATCAO SESESOEB B BPB vise about -inch apart Sullivan SkyLite wheels used components have installed check center gravity CG Youll want CG very close location plans indicate Start CG slightly ahead location shown plans Move batteries around adjust CG location dont add weight dont have models final weight should 44-48 ounces Flying flying wings characteristics will similar other normal aircraft CG properly located models elevons have very short moment arm cant correct CG off very much directional stability provided swept wing propellers adequate Pitch stability provided thrustline above CG elevon balancing forces combined symmetrical airfoil wing twist makes easily controlled aircraft did find bad habits smooth runway important will help prevent airplane bouncing around nose quite light runway smooth can use training wheels small wires trailing down wingtipsto help prevent airplane rotating too much tipping side other made several taxi tests get feel steering Slight misalignments main gear will make model hard control will find taxi airplane fairly fast may pop off ground suddenly let off throttle because propeller thrust exerts down force nose wheel let up sudden drag causes nose lift Its quite surprising first time happens prepare model its initial flight make sure batteries fully charged peak-charging best trim elevons up about 30 first flight close off wing slots clear plastic tape supposed improve low-speed handling increase drag making acceleration difficult Youll want takeoff directly wind possible apply full throttle model should get up speed 100 feet might need add little up elevon get off ground CG too far forward might get off does might able climb Once model air climb gradually builds up speed battery motor propeller combination adequate airplane definitely overpowered careful turns until get feel model Turn slowly first symmetrical-airfoil wing little dihedral will prevent airplane righting itself after turn will have turn model back straighten out should able cut power back conserve batteries after 30 seconds Keep airplane close bywith type aircraft easy lose orientation gets too far away Because light wing loading wind gusts will quite noticeable Landing much different other airplanes although such light wing loading does tend float will find decelerates power cut due high propeller area reason best land under power sight sound model air amazing sure brought back memories k Calkins 1907 Alvarado Ave Walnut Creek CA 94596 References Kohn Leo J Flying Wings Northrop 1974 Maloney Edward T Northrop Flying Wings 1975 Wooldridge ET Winged Wonders Story Flying Wings 1983 TVITT Wing Thing Tailless aircraft group Box 20430 El Cajon CA 92021 II Tfle maII oI SpecialistsSENDI FOR YOUR IOVER 2000 TOOLS & ACCESSORIES COPY Brand Names. Unusual Items.TODAY Exclusive Products savings upI Ito 60% designed make project Ieasier enjoyable professional I TO ORDER Send $100 coupon name address ADDRESS_____________________________________________________[v33][b15482997132525540]] MicroMark 2058 Snyder AveI Berkeley Heights NJ 07922-1595CiTY_____________________________ STATE_________ ZIP____________ II Ba Large tube modal 5995 Gats fingers sway prop Mounts anywhere model must scale models eliminates need hole cowl needle valve needle lves 5 Easy dieap fix broken Get engine ruimingperfedlly countsin air ever again blows flight because bad mixture sdtin& in-flight engine shutoff smoke valve Top leror used tIn setup valve ean placsd enider rowi m fssdag Extra savo & adi diarusel required Soth vslvu gusranteed require no nigine modifications Just opine needle valve leave alone inst needle valve off ranove wanL Ranote & in-flight valvin work glow-ping asginra whidi ma use medium 3132 id fled tubing Lange tube lM id models viny large & some rang glow aiginra Contains task thai line leaks dont have feel-proof tank ares Makes tank isalaltation caner Leaks trapped p1551k bag sealed 13/16 hole firewall tubber cosuixeasion ring Keeps feel oil firewall oat feselage use glow feel Patent pendin& LekCatcher plus 13/16 drill bIt drilling firewall hole required LeakCatcher $295 1nsla-cure thin CA lasts-cure n gap filling CA 1 ox $395 2 ox $625 Odorless Super-Golds thin CA Super-Cold filling CA ox S795 2 ox S1395 lasts-Set CA Accelerator 2 ox $395 order call 1400 765-0474 Visa & MC accepted Ask aboet ow club discounts send check MO Atlantic it/C Products Inc P0 Box 523007 Springfield VA 22152 Free shipping orders over $20 Add $350 shipping handling ordors snidor $20 vArwidonts add 45% sales tax Dmlmmouiries invited July1996 53 Alantic RIC mixture valves safety convenience Get freedom safely control engines mixture needle anywhere model flight using new patented principle No TIME LettheRed Baron Building building service specializing scale RC Aircraft Warblrds aera Classic Aircraft Racing Aircraft Kis Iron Byron Originals Proctor Nick Ziroll Plans hon Ntwsl size scale kit Coming Soon New 10 Super Scale Laser Cit Kits Gee Bee 7 1/3 Scale 94 wingspan Nine other kits Send $200 Catalog RED BARON INTERNATIONAL 710 Cleveland Ste 4 Idaho Falls ID 83402 Call us quote today 208-528-0427
Edition: Model Aviation - 1996/07
Page Numbers: 44, 45, 46, 47, 49, 50, 51, 52, 53
lying-wing aircraft have fascinated long time te young recall seeing large flying-wing bomber TV news 1K program probably covering cancellation Northrop XB-351YB-49 project brief glimpse such graceful aircraft has tayed 40 years As youngster played usual assortment airplanes gliders controlline airplanes simple RC models Fond memories persist father walking Tony Addie Naccaratos Hobby Lobby Burbank California coming out some kits single-channel RC gearfor about $100 Dont tell Mom much spent still recall father saying enjoyed hobby very much though flying success quite limited pursuit education earning living stepped took away hobby day few years ago ran copy book Flying Wings Northrop used bookstore details Northrop XB-35 propeller YB-49 jet flying-wing bombers remembered fascinated once again photographs cutaway drawings book sketched up some approximate dimensions toyed idea building model Maybe would fly Looking through some current model airplane magazines 44 Model Aviation trial-fit leading trailir Internal structure XB-35 Light weight paramount Most strength will come top bottom sheeting 46-ounce XB-35 powered four Silver Streak Electric motors turning Cox 5 x 35 three-blade pusher props Ileeting place covered up nz Top sheeting has completed Access limited motors mounted such can removed servicing Servo installation Rightmost servo has mixer attached Upper link left servo goes steering belicrank Note vents July1996 45 amazed advanced affordable RC equipment become continued look literature flying wings general XB-35 particular times felt remembered airplanes persistence uncovered several excellent publications able determine basic geometry airplane make good estimates some less-obvious parameters determined A2-scale model would smallest practical size would still have good flying characteristics could powered Electric motors felt would easier control gas engines Batteries would provide three five minutes flight Power takeoffs would adequate outstanding tried various motors propellers batteries before deciding proceed design settled included standard balsa-and-Lite Ply construction four Silver Streak motors PeckPolymers turning Cox 5 x 35 three-blade pusher propellers Futaba four-channel radio system speed control small servos Du-Bro V-tail mixer motors would wired parallel high-efficiency wire Sermos connectors would used six- sevencell 1 500-mAh battery pack would power everything wingspan slightly five feet set target weight 40 ounces hoped come under slightly optimistic final flying weight 46 ounces CONSTRUCTION wing built two halves joined middle balsa sheeting applied after halves joined motor mounts propeller-shaft support structures place allows easy access during alignment phase Because models symmetrical airfoil jig required build wing structure cannot lie flat workbench half wing flat root tip main spar has inflection rib 7 requires some extra care spar support elevations flat work surface shown table below elevation main spar rib 7 compensates inflection main spar T structure top bottom surfaces wing center portion made 2 balsa outer portion made 16 sure spars straight flat Pin piece work surface using straightedge guide vertical piece centered cyanoacrylate CyA glue used hold place forming shaped cross-section Attach spars work surface over plans supported elevations shown Supports several intermediate points will also help Spar Support Elevations LocationRootRib 7 Main Spar 00 0125 RearSpar1125075 Tip 00 01875 Cut ribs sheet balsa consistency put pattern inboard surface worthwhile mark top bottom left right pieces prevent confusion almostbut quitesymmetrical Cut main spar notches first place ribs jig locate rear spar location Because INTRODUCINO NFW" PRECISION PROP NUTS AND HUBS Now greater choice quality Tru-Turn products 3 sizes PROP NUTS ranging 5/8 7/8 diameter 2 shapes available stock RIG engine thread sizes 5 sizes PROP HUBS ranging 1 2 diameter 2 shapes new PROP NUTS PROP HUBS addition existing line precision aluminum spinners range 1-1/2 6 over 90 shapes sizes blade configurations new Tru-Turn PROP HUB line complimented extensive line over 70 adapter kits Tru-Turn makes adapter production RIG engine market have adapter problem. help phone call away. See hobby dealer call us direct. /IIZzJ7/TM Made n U S PRECISION MODEL PRODUCTS Romco Manufacturing Inc QUALITY VERSATILITY GREAT LOOKS TY PO Box 836 South Houston Texas 77587 713/ 943-1867 46 Model Aviation i w angles involved would difficult cut everything once maintain alignment spar notches place remove ribs form trim off portions leading trailing edges cut lightening holes Attach ribs bottom spars ribs need inclined 30 off vertical compensate dihedral angle bottom surface Use doubler rib 7 add strength inflection joint appears main spar ribs place top spars can added ribs attached spars leading trailing edges can added leading edge made 4 balsa Trial-fit pieces make sure ribs make firm contact Holding piece place mark top bottom points contacts rib Remove stock draw line root top contact points use guide trim excess material before glued place leading edge has large slot allow cooling air reach motors batteries speed control Cut slot before leading edge attached After glued place carefully trim material Remember structure fairly fragile before covered elevons built balsa similar procedure using leftover pieces ribs Use A6 plywood control horn Line up main wing locate hinge points Glue hinges elevons first used pin point hinges Carl Goldberg Models almost available hinge would work just well Cover elevons 1/32 balsa Sand shape Now elevon hinges can attached main wing use thick CyA epoxy thin CyA can wick hinge joint Elevon throw should 150 wing slots added next could find details used straight pieces 142 balsa sheet glued between ribs included appearance eieases 1995 Warbirds 95 & Birds Prey $1995 EACH S&1I SEND TO AMR PRODUCTIONS P0 BOX 1813 TOMS RIVER NJ 08754 GOT PROBLEM PAT 4221452 Re eta 3acA 1-SOFT MOUNTED ENGINESJLVE IT WITH WRECKING GLOW DRIVER 2-HARD TO GET AT PLUGHEAD 3LARGE/DEEP COWLING FITS ALL STANDARD PLUGS4FINGERS CLOSE TO PROP 5SCALE PROJEC NO HOR E Al OT E FROM K&B 2 STROKE TOHEAOLOCX GLOW DRIVER ENYA 4 STROKECdenct ST#021 SINGLE$995 ST#022 TWIN$1395 LOCK IF EYr AVAThAUZ $100 $200LB MODEL PRODUCTS CORPPO BOX 100 ALLAMUCHY NJ 07820908 850-1508 c4 Mills ls ] rIiITES Precision instruments I FREE COR CATALOG FREE CATALOGChoose over 200 exc t ng k tes LATIIESii unusual & nnovat ye des gns CAMPBELL TOOLS COI Call write catalog todayl 2100-M Selma RdI Wind l 541-0314 Spnngfield OH MA Pearl St Boulder CO 80302 513-3224502 1800 ruiter ordersl L rushless DC Motors & Dita1 d Controller Call 716-662-5651 Brochure & Oderfomi azecm Motors 57 Hawthorne Dr Orchard Park NY 14127 ction full-scale XB-35 used takeoff landings closed during normal flight know would effective model size motor mounts propeller-shaft housings built up 1/i6 plywood used ball bearings custom propeller adapters final shaft supports plywood nylon bearings would also work motor mounts constructed motors can removed servicing Align components best can before gluing place Misalignment can cause excessive vibration leading lack power eventual fatigue failures Spend little extra time balsa webbing between bottom propeller shaft supports trailing edge used absorb normal vibrations very important test-run motors support place next step join two wing halves main strength provided /16-plywood bulkhead main spar Balsa blocks top bottom used fill gaps between bulkhead spars Verify dihedral before gluing everything place Use slow-curing epoxy can adjust components necessary before adhesive sets two leading edges secured Aplywood strengthener 46-plywood rear bulkhead also holds servos Check servos fit properly mixer works before gluing things place Now can install elevon controls cables Secure cables ribs reduce slop improve control Attach main landing-gear support blocks steerable nose wheel support made /6 plywood A6 hole drilled through control cable also needs supported several places improve ground handling cover model build simple jig hold firmly center wingtips Note wing has 50 washout front wingtips point down slightly must built before covering added very OK Cub 049B Lug & radial mount Metal tank High RPM True Carburetion $14 EACH shpg per order 58 years OK engine history 80 page book Includes complete engine listings full color photos COLLECTOR EDITION $1195 p/p Set five color posters $15 year catalog/newsletter $2 accept VISA MASTERCARD OK ENGINES PO BOX 355 MOHAWK NY 13407 July1996 49 .aaaa Sa e1K Rake ASK 181/385 163span wing profile E193/197 weight Ca 115 lbs Roedelniodel ASK 211/45 l65span wing profile E393 weight Ca 115 lbs RawberE DIECUE 1/375 lS7span wing profile HO 30/14 weIght Ca 10 ibs Roebers AEW 24/271/35 157span wing profile HO 30/14 weight Ca ii lbs KrauEe SUlta 1/3 177span wing profile 11Q 3/14 weight Ca 135 ibs Rake DC 2021/35191 span wing profile E203/201/197 weight ca 11 lbs Ripo DC 6001/3 236span scale wing profile weight ca 25 lbs Euchele NimbuE 41/44 237span wing profile HO 3/14 3/13 weight Ca 14 lbs TOWPLANES FriNch PZL 104 WIlgo 1/4 i09span 79 long weight Ca 20-23 lbs aaaaaaa SuilpIanes Unlimited Ltd 63 East 82nd Stre et NYC NY 10028 East coast contact Robin Lehman 212 879-1634 Phone 212 535-5295 Fax West coast contact Mark Foster 213 257-4573 OK Cub 049A Radial mount Nylon tank High RPM True Carburetion important good flight characteristics Make sure correct amount washout present once covered cannot changed covering material 1A2 balsa sheet Start leading edge cover midpoint main spar forward leading edge Use thin CyA hold place Use extra-wide pieces balsa cover aft portion wing can glue two three four-inch-wide pieces together thin CyA Note access hatches enable service motors bellcranks etc cover areas Before both sides covered install dummy antenna wire will enable pull actual antenna through receiver installed Some may find easier install wire motors before wing fully covered although can also done afterward Once covering place remove airplane jigit should very torsionally stiff careful can easily poke finger through thin covering material Cut two air-exhaust hatches top surface shown plans Make hatch covers access openings out 1/3 balsa Secure small screws Use /s-wide strips /32 balsa cover propeller shaft housings Light filler can used necessary main nacelle shape now added wing surface Use A6 balsa bulkheads /16-square balsa runners Cover /32 sheet balsa Sand everything smooth paint model silver automotive trim paint keep weight down use too much paint pilots canopy molded plastic sheet vacuum-formed over wooden block has carved sanded shape Painting surface wing under canopy black attach canopy plastic cement small pilot head can added desired main landing gear formed 3A2 music wire nose gear formed As music wire have wire bender use two door-hinge pins held securely 50 Model Aviation 4On Antiques Military Civilian Helicopters Sailplanes have wA1 brgest aircraft Sxumentation collection 5800 different full color photo studies 1905-1996 33000 3-view line drawings New 1996 Catalog/Guide 188 pages Canada/Mexico $1000 Only $8 Overseas $1500 [A Bob Bankas e Model Research 3114 Yukon Avenue a Mesa CA 92626 79-8058 Look us net http/fimtnet/-]ms/scalehtml TT TOP VIEW ION PLOSOOSRIVER STREARaccess SATANS BLASE PASSER CROSTSOSEL S SO LACENIIT 0 PAREAOEO BRO 30320k SETAL-OUTBOAROMOTOR NOSEGEAR STEERING BELLCRANKCOPS- INSTALLATION SETAIL SECT D-O0550ELOI4 - -4 MOTORSPOELLE II-c.-1 -C- IPANSPOT BLADES PA NSES PROPSSIDE VIEWSECT B-B ITTSPECIFICATIONS SDNSEISTOTEBOSOALBIIS2I N oioN NCSTSTRICTIOSBOLT UP BALSE N PIT ST STCODERINABALSA SOEST CORP CS01ST SPARBA S SOS SASS AKSESOVEAPLE SATANTASRE BLADES 0505 ASIA NOPPOOCEELSNARN AREASTE S PA IN PEAK POTRNEBNSTSBNSEBLISPALOTE AR SIPAIIBBINSA AASISTIITB 000 PAMODEL AVIATION STOP SPOPTORELEARRIC SADROSSSIBAARINORThROP XR-35 PEAK PSLOBEBSONE ROB SAAEO RAKSOPS SETLITESSEELSFLYING WING BOMBER ASSFRONT LAB ABE ADNILSELL PROS5025AK S BSENISTES BT SLSSO S LACE PUPIC_____________ CIETAILINBOARO MOTORDONTDTPTIZSOO S/S/AT ARLATRA OTTOSTAUS BEEMBREBISP P814 1 N D -U 0 D D 0 D 0 IB BALSA SHEETVIAx 14 BALSAV32x VA BALSA V T SPARST E FACING 3B BALSA LEAD NG ESSE 723B GA R 9BALSA CE RB 332 BALSA LIGITENINHEEl HOLES3S2 SO BALSA BEAR SPARS R 7SGO BALSA SHEET R6 R 5332 BALSASB IA _____SHEETBOLSA T E R4 TRIM OUT TO LIGHTEN G32 BALSA SHEET VIA BALSA SHEET VIA BALSA SHEET SHEETIIG GO BALSA STRINGER PROPADAPTOR 9/IASIAA GM NOB 316 DIG HP OTASI THREAS S-AR AA PP ER WING RIE~ -- PLO 77r7T T PECK B/BVB14 SILVER OTBEG ELECTRIC MOlD SERVO BALSATO NOSEAHEEL L E TYPICAL MOTOR MOUNT DETAIL WING IA PLOASAS NOTE SPARS NEES TO BE TAPERED TG FIT IN WING TIP AREA R17 032 BALSA SHEET H 16 R 15 052 BALSA SHEET VA GALS LEVIA BASA SHEET 4 R I-I2-- 222-- Si 1- - IA BALSA SHEET Ru -LI__________ R3R2-5R2 GA BALSA LEASING EDGE R 10 BALsA R-IIIA BALSATRAILINGIHs3/BBALSA Sf32 BALSAESGETAPERED LE SHE ET 0/A SO BALSA STRINGER TTHCAL I//H BALSA F G H i//A BALSA SHEET VA SoEI/IA BALSA SHEET BALSA STRI BAER I/IA BALSA SHEET DI SLOE 2-BA RATS ON BACH D2 I//A PLOWOOD SERVO MOONTINA PLATE ItiTAI ATIANI TOP VIEW VIA GIG MW N 133 SERVOS----BAlSA TE TO SERVOGTO ELEVON SERVO INSTALLATION FRONT VIEW PLO 3/B IS I/B PLO VIA PLO ~ PLY INROARS 3/525 I/IA IN- BAAROOAT- BGABS NACELLE S MODEL AVIATION NOTHROP XB-35 FLYING WING BOMBER BESIANED BC CLARK CALKINS INKED PLANS BC DOE SEMARCO ALL N/BROS SNEER OVA CGAPIJ//GIZEO 4AAB GO OOATCAO SESESOEB B BPB vise about -inch apart Sullivan SkyLite wheels used components have installed check center gravity CG Youll want CG very close location plans indicate Start CG slightly ahead location shown plans Move batteries around adjust CG location dont add weight dont have models final weight should 44-48 ounces Flying flying wings characteristics will similar other normal aircraft CG properly located models elevons have very short moment arm cant correct CG off very much directional stability provided swept wing propellers adequate Pitch stability provided thrustline above CG elevon balancing forces combined symmetrical airfoil wing twist makes easily controlled aircraft did find bad habits smooth runway important will help prevent airplane bouncing around nose quite light runway smooth can use training wheels small wires trailing down wingtipsto help prevent airplane rotating too much tipping side other made several taxi tests get feel steering Slight misalignments main gear will make model hard control will find taxi airplane fairly fast may pop off ground suddenly let off throttle because propeller thrust exerts down force nose wheel let up sudden drag causes nose lift Its quite surprising first time happens prepare model its initial flight make sure batteries fully charged peak-charging best trim elevons up about 30 first flight close off wing slots clear plastic tape supposed improve low-speed handling increase drag making acceleration difficult Youll want takeoff directly wind possible apply full throttle model should get up speed 100 feet might need add little up elevon get off ground CG too far forward might get off does might able climb Once model air climb gradually builds up speed battery motor propeller combination adequate airplane definitely overpowered careful turns until get feel model Turn slowly first symmetrical-airfoil wing little dihedral will prevent airplane righting itself after turn will have turn model back straighten out should able cut power back conserve batteries after 30 seconds Keep airplane close bywith type aircraft easy lose orientation gets too far away Because light wing loading wind gusts will quite noticeable Landing much different other airplanes although such light wing loading does tend float will find decelerates power cut due high propeller area reason best land under power sight sound model air amazing sure brought back memories k Calkins 1907 Alvarado Ave Walnut Creek CA 94596 References Kohn Leo J Flying Wings Northrop 1974 Maloney Edward T Northrop Flying Wings 1975 Wooldridge ET Winged Wonders Story Flying Wings 1983 TVITT Wing Thing Tailless aircraft group Box 20430 El Cajon CA 92021 II Tfle maII oI SpecialistsSENDI FOR YOUR IOVER 2000 TOOLS & ACCESSORIES COPY Brand Names. Unusual Items.TODAY Exclusive Products savings upI Ito 60% designed make project Ieasier enjoyable professional I TO ORDER Send $100 coupon name address ADDRESS_____________________________________________________[v33][b15482997132525540]] MicroMark 2058 Snyder AveI Berkeley Heights NJ 07922-1595CiTY_____________________________ STATE_________ ZIP____________ II Ba Large tube modal 5995 Gats fingers sway prop Mounts anywhere model must scale models eliminates need hole cowl needle valve needle lves 5 Easy dieap fix broken Get engine ruimingperfedlly countsin air ever again blows flight because bad mixture sdtin& in-flight engine shutoff smoke valve Top leror used tIn setup valve ean placsd enider rowi m fssdag Extra savo & adi diarusel required Soth vslvu gusranteed require no nigine modifications Just opine needle valve leave alone inst needle valve off ranove wanL Ranote & in-flight valvin work glow-ping asginra whidi ma use medium 3132 id fled tubing Lange tube lM id models viny large & some rang glow aiginra Contains task thai line leaks dont have feel-proof tank ares Makes tank isalaltation caner Leaks trapped p1551k bag sealed 13/16 hole firewall tubber cosuixeasion ring Keeps feel oil firewall oat feselage use glow feel Patent pendin& LekCatcher plus 13/16 drill bIt drilling firewall hole required LeakCatcher $295 1nsla-cure thin CA lasts-cure n gap filling CA 1 ox $395 2 ox $625 Odorless Super-Golds thin CA Super-Cold filling CA ox S795 2 ox S1395 lasts-Set CA Accelerator 2 ox $395 order call 1400 765-0474 Visa & MC accepted Ask aboet ow club discounts send check MO Atlantic it/C Products Inc P0 Box 523007 Springfield VA 22152 Free shipping orders over $20 Add $350 shipping handling ordors snidor $20 vArwidonts add 45% sales tax Dmlmmouiries invited July1996 53 Alantic RIC mixture valves safety convenience Get freedom safely control engines mixture needle anywhere model flight using new patented principle No TIME LettheRed Baron Building building service specializing scale RC Aircraft Warblrds aera Classic Aircraft Racing Aircraft Kis Iron Byron Originals Proctor Nick Ziroll Plans hon Ntwsl size scale kit Coming Soon New 10 Super Scale Laser Cit Kits Gee Bee 7 1/3 Scale 94 wingspan Nine other kits Send $200 Catalog RED BARON INTERNATIONAL 710 Cleveland Ste 4 Idaho Falls ID 83402 Call us quote today 208-528-0427
Edition: Model Aviation - 1996/07
Page Numbers: 44, 45, 46, 47, 49, 50, 51, 52, 53
lying-wing aircraft have fascinated long time te young recall seeing large flying-wing bomber TV news 1K program probably covering cancellation Northrop XB-351YB-49 project brief glimpse such graceful aircraft has tayed 40 years As youngster played usual assortment airplanes gliders controlline airplanes simple RC models Fond memories persist father walking Tony Addie Naccaratos Hobby Lobby Burbank California coming out some kits single-channel RC gearfor about $100 Dont tell Mom much spent still recall father saying enjoyed hobby very much though flying success quite limited pursuit education earning living stepped took away hobby day few years ago ran copy book Flying Wings Northrop used bookstore details Northrop XB-35 propeller YB-49 jet flying-wing bombers remembered fascinated once again photographs cutaway drawings book sketched up some approximate dimensions toyed idea building model Maybe would fly Looking through some current model airplane magazines 44 Model Aviation trial-fit leading trailir Internal structure XB-35 Light weight paramount Most strength will come top bottom sheeting 46-ounce XB-35 powered four Silver Streak Electric motors turning Cox 5 x 35 three-blade pusher props Ileeting place covered up nz Top sheeting has completed Access limited motors mounted such can removed servicing Servo installation Rightmost servo has mixer attached Upper link left servo goes steering belicrank Note vents July1996 45 amazed advanced affordable RC equipment become continued look literature flying wings general XB-35 particular times felt remembered airplanes persistence uncovered several excellent publications able determine basic geometry airplane make good estimates some less-obvious parameters determined A2-scale model would smallest practical size would still have good flying characteristics could powered Electric motors felt would easier control gas engines Batteries would provide three five minutes flight Power takeoffs would adequate outstanding tried various motors propellers batteries before deciding proceed design settled included standard balsa-and-Lite Ply construction four Silver Streak motors PeckPolymers turning Cox 5 x 35 three-blade pusher propellers Futaba four-channel radio system speed control small servos Du-Bro V-tail mixer motors would wired parallel high-efficiency wire Sermos connectors would used six- sevencell 1 500-mAh battery pack would power everything wingspan slightly five feet set target weight 40 ounces hoped come under slightly optimistic final flying weight 46 ounces CONSTRUCTION wing built two halves joined middle balsa sheeting applied after halves joined motor mounts propeller-shaft support structures place allows easy access during alignment phase Because models symmetrical airfoil jig required build wing structure cannot lie flat workbench half wing flat root tip main spar has inflection rib 7 requires some extra care spar support elevations flat work surface shown table below elevation main spar rib 7 compensates inflection main spar T structure top bottom surfaces wing center portion made 2 balsa outer portion made 16 sure spars straight flat Pin piece work surface using straightedge guide vertical piece centered cyanoacrylate CyA glue used hold place forming shaped cross-section Attach spars work surface over plans supported elevations shown Supports several intermediate points will also help Spar Support Elevations LocationRootRib 7 Main Spar 00 0125 RearSpar1125075 Tip 00 01875 Cut ribs sheet balsa consistency put pattern inboard surface worthwhile mark top bottom left right pieces prevent confusion almostbut quitesymmetrical Cut main spar notches first place ribs jig locate rear spar location Because INTRODUCINO NFW" PRECISION PROP NUTS AND HUBS Now greater choice quality Tru-Turn products 3 sizes PROP NUTS ranging 5/8 7/8 diameter 2 shapes available stock RIG engine thread sizes 5 sizes PROP HUBS ranging 1 2 diameter 2 shapes new PROP NUTS PROP HUBS addition existing line precision aluminum spinners range 1-1/2 6 over 90 shapes sizes blade configurations new Tru-Turn PROP HUB line complimented extensive line over 70 adapter kits Tru-Turn makes adapter production RIG engine market have adapter problem. help phone call away. See hobby dealer call us direct. /IIZzJ7/TM Made n U S PRECISION MODEL PRODUCTS Romco Manufacturing Inc QUALITY VERSATILITY GREAT LOOKS TY PO Box 836 South Houston Texas 77587 713/ 943-1867 46 Model Aviation i w angles involved would difficult cut everything once maintain alignment spar notches place remove ribs form trim off portions leading trailing edges cut lightening holes Attach ribs bottom spars ribs need inclined 30 off vertical compensate dihedral angle bottom surface Use doubler rib 7 add strength inflection joint appears main spar ribs place top spars can added ribs attached spars leading trailing edges can added leading edge made 4 balsa Trial-fit pieces make sure ribs make firm contact Holding piece place mark top bottom points contacts rib Remove stock draw line root top contact points use guide trim excess material before glued place leading edge has large slot allow cooling air reach motors batteries speed control Cut slot before leading edge attached After glued place carefully trim material Remember structure fairly fragile before covered elevons built balsa similar procedure using leftover pieces ribs Use A6 plywood control horn Line up main wing locate hinge points Glue hinges elevons first used pin point hinges Carl Goldberg Models almost available hinge would work just well Cover elevons 1/32 balsa Sand shape Now elevon hinges can attached main wing use thick CyA epoxy thin CyA can wick hinge joint Elevon throw should 150 wing slots added next could find details used straight pieces 142 balsa sheet glued between ribs included appearance eieases 1995 Warbirds 95 & Birds Prey $1995 EACH S&1I SEND TO AMR PRODUCTIONS P0 BOX 1813 TOMS RIVER NJ 08754 GOT PROBLEM PAT 4221452 Re eta 3acA 1-SOFT MOUNTED ENGINESJLVE IT WITH WRECKING GLOW DRIVER 2-HARD TO GET AT PLUGHEAD 3LARGE/DEEP COWLING FITS ALL STANDARD PLUGS4FINGERS CLOSE TO PROP 5SCALE PROJEC NO HOR E Al OT E FROM K&B 2 STROKE TOHEAOLOCX GLOW DRIVER ENYA 4 STROKECdenct ST#021 SINGLE$995 ST#022 TWIN$1395 LOCK IF EYr AVAThAUZ $100 $200LB MODEL PRODUCTS CORPPO BOX 100 ALLAMUCHY NJ 07820908 850-1508 c4 Mills ls ] rIiITES Precision instruments I FREE COR CATALOG FREE CATALOGChoose over 200 exc t ng k tes LATIIESii unusual & nnovat ye des gns CAMPBELL TOOLS COI Call write catalog todayl 2100-M Selma RdI Wind l 541-0314 Spnngfield OH MA Pearl St Boulder CO 80302 513-3224502 1800 ruiter ordersl L rushless DC Motors & Dita1 d Controller Call 716-662-5651 Brochure & Oderfomi azecm Motors 57 Hawthorne Dr Orchard Park NY 14127 ction full-scale XB-35 used takeoff landings closed during normal flight know would effective model size motor mounts propeller-shaft housings built up 1/i6 plywood used ball bearings custom propeller adapters final shaft supports plywood nylon bearings would also work motor mounts constructed motors can removed servicing Align components best can before gluing place Misalignment can cause excessive vibration leading lack power eventual fatigue failures Spend little extra time balsa webbing between bottom propeller shaft supports trailing edge used absorb normal vibrations very important test-run motors support place next step join two wing halves main strength provided /16-plywood bulkhead main spar Balsa blocks top bottom used fill gaps between bulkhead spars Verify dihedral before gluing everything place Use slow-curing epoxy can adjust components necessary before adhesive sets two leading edges secured Aplywood strengthener 46-plywood rear bulkhead also holds servos Check servos fit properly mixer works before gluing things place Now can install elevon controls cables Secure cables ribs reduce slop improve control Attach main landing-gear support blocks steerable nose wheel support made /6 plywood A6 hole drilled through control cable also needs supported several places improve ground handling cover model build simple jig hold firmly center wingtips Note wing has 50 washout front wingtips point down slightly must built before covering added very OK Cub 049B Lug & radial mount Metal tank High RPM True Carburetion $14 EACH shpg per order 58 years OK engine history 80 page book Includes complete engine listings full color photos COLLECTOR EDITION $1195 p/p Set five color posters $15 year catalog/newsletter $2 accept VISA MASTERCARD OK ENGINES PO BOX 355 MOHAWK NY 13407 July1996 49 .aaaa Sa e1K Rake ASK 181/385 163span wing profile E193/197 weight Ca 115 lbs Roedelniodel ASK 211/45 l65span wing profile E393 weight Ca 115 lbs RawberE DIECUE 1/375 lS7span wing profile HO 30/14 weIght Ca 10 ibs Roebers AEW 24/271/35 157span wing profile HO 30/14 weight Ca ii lbs KrauEe SUlta 1/3 177span wing profile 11Q 3/14 weight Ca 135 ibs Rake DC 2021/35191 span wing profile E203/201/197 weight ca 11 lbs Ripo DC 6001/3 236span scale wing profile weight ca 25 lbs Euchele NimbuE 41/44 237span wing profile HO 3/14 3/13 weight Ca 14 lbs TOWPLANES FriNch PZL 104 WIlgo 1/4 i09span 79 long weight Ca 20-23 lbs aaaaaaa SuilpIanes Unlimited Ltd 63 East 82nd Stre et NYC NY 10028 East coast contact Robin Lehman 212 879-1634 Phone 212 535-5295 Fax West coast contact Mark Foster 213 257-4573 OK Cub 049A Radial mount Nylon tank High RPM True Carburetion important good flight characteristics Make sure correct amount washout present once covered cannot changed covering material 1A2 balsa sheet Start leading edge cover midpoint main spar forward leading edge Use thin CyA hold place Use extra-wide pieces balsa cover aft portion wing can glue two three four-inch-wide pieces together thin CyA Note access hatches enable service motors bellcranks etc cover areas Before both sides covered install dummy antenna wire will enable pull actual antenna through receiver installed Some may find easier install wire motors before wing fully covered although can also done afterward Once covering place remove airplane jigit should very torsionally stiff careful can easily poke finger through thin covering material Cut two air-exhaust hatches top surface shown plans Make hatch covers access openings out 1/3 balsa Secure small screws Use /s-wide strips /32 balsa cover propeller shaft housings Light filler can used necessary main nacelle shape now added wing surface Use A6 balsa bulkheads /16-square balsa runners Cover /32 sheet balsa Sand everything smooth paint model silver automotive trim paint keep weight down use too much paint pilots canopy molded plastic sheet vacuum-formed over wooden block has carved sanded shape Painting surface wing under canopy black attach canopy plastic cement small pilot head can added desired main landing gear formed 3A2 music wire nose gear formed As music wire have wire bender use two door-hinge pins held securely 50 Model Aviation 4On Antiques Military Civilian Helicopters Sailplanes have wA1 brgest aircraft Sxumentation collection 5800 different full color photo studies 1905-1996 33000 3-view line drawings New 1996 Catalog/Guide 188 pages Canada/Mexico $1000 Only $8 Overseas $1500 [A Bob Bankas e Model Research 3114 Yukon Avenue a Mesa CA 92626 79-8058 Look us net http/fimtnet/-]ms/scalehtml TT TOP VIEW ION PLOSOOSRIVER STREARaccess SATANS BLASE PASSER CROSTSOSEL S SO LACENIIT 0 PAREAOEO BRO 30320k SETAL-OUTBOAROMOTOR NOSEGEAR STEERING BELLCRANKCOPS- INSTALLATION SETAIL SECT D-O0550ELOI4 - -4 MOTORSPOELLE II-c.-1 -C- IPANSPOT BLADES PA NSES PROPSSIDE VIEWSECT B-B ITTSPECIFICATIONS SDNSEISTOTEBOSOALBIIS2I N oioN NCSTSTRICTIOSBOLT UP BALSE N PIT ST STCODERINABALSA SOEST CORP CS01ST SPARBA S SOS SASS AKSESOVEAPLE SATANTASRE BLADES 0505 ASIA NOPPOOCEELSNARN AREASTE S PA IN PEAK POTRNEBNSTSBNSEBLISPALOTE AR SIPAIIBBINSA AASISTIITB 000 PAMODEL AVIATION STOP SPOPTORELEARRIC SADROSSSIBAARINORThROP XR-35 PEAK PSLOBEBSONE ROB SAAEO RAKSOPS SETLITESSEELSFLYING WING BOMBER ASSFRONT LAB ABE ADNILSELL PROS5025AK S BSENISTES BT SLSSO S LACE PUPIC_____________ CIETAILINBOARO MOTORDONTDTPTIZSOO S/S/AT ARLATRA OTTOSTAUS BEEMBREBISP P814 1 N D -U 0 D D 0 D 0 IB BALSA SHEETVIAx 14 BALSAV32x VA BALSA V T SPARST E FACING 3B BALSA LEAD NG ESSE 723B GA R 9BALSA CE RB 332 BALSA LIGITENINHEEl HOLES3S2 SO BALSA BEAR SPARS R 7SGO BALSA SHEET R6 R 5332 BALSASB IA _____SHEETBOLSA T E R4 TRIM OUT TO LIGHTEN G32 BALSA SHEET VIA BALSA SHEET VIA BALSA SHEET SHEETIIG GO BALSA STRINGER PROPADAPTOR 9/IASIAA GM NOB 316 DIG HP OTASI THREAS S-AR AA PP ER WING RIE~ -- PLO 77r7T T PECK B/BVB14 SILVER OTBEG ELECTRIC MOlD SERVO BALSATO NOSEAHEEL L E TYPICAL MOTOR MOUNT DETAIL WING IA PLOASAS NOTE SPARS NEES TO BE TAPERED TG FIT IN WING TIP AREA R17 032 BALSA SHEET H 16 R 15 052 BALSA SHEET VA GALS LEVIA BASA SHEET 4 R I-I2-- 222-- Si 1- - IA BALSA SHEET Ru -LI__________ R3R2-5R2 GA BALSA LEASING EDGE R 10 BALsA R-IIIA BALSATRAILINGIHs3/BBALSA Sf32 BALSAESGETAPERED LE SHE ET 0/A SO BALSA STRINGER TTHCAL I//H BALSA F G H i//A BALSA SHEET VA SoEI/IA BALSA SHEET BALSA STRI BAER I/IA BALSA SHEET DI SLOE 2-BA RATS ON BACH D2 I//A PLOWOOD SERVO MOONTINA PLATE ItiTAI ATIANI TOP VIEW VIA GIG MW N 133 SERVOS----BAlSA TE TO SERVOGTO ELEVON SERVO INSTALLATION FRONT VIEW PLO 3/B IS I/B PLO VIA PLO ~ PLY INROARS 3/525 I/IA IN- BAAROOAT- BGABS NACELLE S MODEL AVIATION NOTHROP XB-35 FLYING WING BOMBER BESIANED BC CLARK CALKINS INKED PLANS BC DOE SEMARCO ALL N/BROS SNEER OVA CGAPIJ//GIZEO 4AAB GO OOATCAO SESESOEB B BPB vise about -inch apart Sullivan SkyLite wheels used components have installed check center gravity CG Youll want CG very close location plans indicate Start CG slightly ahead location shown plans Move batteries around adjust CG location dont add weight dont have models final weight should 44-48 ounces Flying flying wings characteristics will similar other normal aircraft CG properly located models elevons have very short moment arm cant correct CG off very much directional stability provided swept wing propellers adequate Pitch stability provided thrustline above CG elevon balancing forces combined symmetrical airfoil wing twist makes easily controlled aircraft did find bad habits smooth runway important will help prevent airplane bouncing around nose quite light runway smooth can use training wheels small wires trailing down wingtipsto help prevent airplane rotating too much tipping side other made several taxi tests get feel steering Slight misalignments main gear will make model hard control will find taxi airplane fairly fast may pop off ground suddenly let off throttle because propeller thrust exerts down force nose wheel let up sudden drag causes nose lift Its quite surprising first time happens prepare model its initial flight make sure batteries fully charged peak-charging best trim elevons up about 30 first flight close off wing slots clear plastic tape supposed improve low-speed handling increase drag making acceleration difficult Youll want takeoff directly wind possible apply full throttle model should get up speed 100 feet might need add little up elevon get off ground CG too far forward might get off does might able climb Once model air climb gradually builds up speed battery motor propeller combination adequate airplane definitely overpowered careful turns until get feel model Turn slowly first symmetrical-airfoil wing little dihedral will prevent airplane righting itself after turn will have turn model back straighten out should able cut power back conserve batteries after 30 seconds Keep airplane close bywith type aircraft easy lose orientation gets too far away Because light wing loading wind gusts will quite noticeable Landing much different other airplanes although such light wing loading does tend float will find decelerates power cut due high propeller area reason best land under power sight sound model air amazing sure brought back memories k Calkins 1907 Alvarado Ave Walnut Creek CA 94596 References Kohn Leo J Flying Wings Northrop 1974 Maloney Edward T Northrop Flying Wings 1975 Wooldridge ET Winged Wonders Story Flying Wings 1983 TVITT Wing Thing Tailless aircraft group Box 20430 El Cajon CA 92021 II Tfle maII oI SpecialistsSENDI FOR YOUR IOVER 2000 TOOLS & ACCESSORIES COPY Brand Names. Unusual Items.TODAY Exclusive Products savings upI Ito 60% designed make project Ieasier enjoyable professional I TO ORDER Send $100 coupon name address ADDRESS_____________________________________________________[v33][b15482997132525540]] MicroMark 2058 Snyder AveI Berkeley Heights NJ 07922-1595CiTY_____________________________ STATE_________ ZIP____________ II Ba Large tube modal 5995 Gats fingers sway prop Mounts anywhere model must scale models eliminates need hole cowl needle valve needle lves 5 Easy dieap fix broken Get engine ruimingperfedlly countsin air ever again blows flight because bad mixture sdtin& in-flight engine shutoff smoke valve Top leror used tIn setup valve ean placsd enider rowi m fssdag Extra savo & adi diarusel required Soth vslvu gusranteed require no nigine modifications Just opine needle valve leave alone inst needle valve off ranove wanL Ranote & in-flight valvin work glow-ping asginra whidi ma use medium 3132 id fled tubing Lange tube lM id models viny large & some rang glow aiginra Contains task thai line leaks dont have feel-proof tank ares Makes tank isalaltation caner Leaks trapped p1551k bag sealed 13/16 hole firewall tubber cosuixeasion ring Keeps feel oil firewall oat feselage use glow feel Patent pendin& LekCatcher plus 13/16 drill bIt drilling firewall hole required LeakCatcher $295 1nsla-cure thin CA lasts-cure n gap filling CA 1 ox $395 2 ox $625 Odorless Super-Golds thin CA Super-Cold filling CA ox S795 2 ox S1395 lasts-Set CA Accelerator 2 ox $395 order call 1400 765-0474 Visa & MC accepted Ask aboet ow club discounts send check MO Atlantic it/C Products Inc P0 Box 523007 Springfield VA 22152 Free shipping orders over $20 Add $350 shipping handling ordors snidor $20 vArwidonts add 45% sales tax Dmlmmouiries invited July1996 53 Alantic RIC mixture valves safety convenience Get freedom safely control engines mixture needle anywhere model flight using new patented principle No TIME LettheRed Baron Building building service specializing scale RC Aircraft Warblrds aera Classic Aircraft Racing Aircraft Kis Iron Byron Originals Proctor Nick Ziroll Plans hon Ntwsl size scale kit Coming Soon New 10 Super Scale Laser Cit Kits Gee Bee 7 1/3 Scale 94 wingspan Nine other kits Send $200 Catalog RED BARON INTERNATIONAL 710 Cleveland Ste 4 Idaho Falls ID 83402 Call us quote today 208-528-0427
Edition: Model Aviation - 1996/07
Page Numbers: 44, 45, 46, 47, 49, 50, 51, 52, 53
lying-wing aircraft have fascinated long time te young recall seeing large flying-wing bomber TV news 1K program probably covering cancellation Northrop XB-351YB-49 project brief glimpse such graceful aircraft has tayed 40 years As youngster played usual assortment airplanes gliders controlline airplanes simple RC models Fond memories persist father walking Tony Addie Naccaratos Hobby Lobby Burbank California coming out some kits single-channel RC gearfor about $100 Dont tell Mom much spent still recall father saying enjoyed hobby very much though flying success quite limited pursuit education earning living stepped took away hobby day few years ago ran copy book Flying Wings Northrop used bookstore details Northrop XB-35 propeller YB-49 jet flying-wing bombers remembered fascinated once again photographs cutaway drawings book sketched up some approximate dimensions toyed idea building model Maybe would fly Looking through some current model airplane magazines 44 Model Aviation trial-fit leading trailir Internal structure XB-35 Light weight paramount Most strength will come top bottom sheeting 46-ounce XB-35 powered four Silver Streak Electric motors turning Cox 5 x 35 three-blade pusher props Ileeting place covered up nz Top sheeting has completed Access limited motors mounted such can removed servicing Servo installation Rightmost servo has mixer attached Upper link left servo goes steering belicrank Note vents July1996 45 amazed advanced affordable RC equipment become continued look literature flying wings general XB-35 particular times felt remembered airplanes persistence uncovered several excellent publications able determine basic geometry airplane make good estimates some less-obvious parameters determined A2-scale model would smallest practical size would still have good flying characteristics could powered Electric motors felt would easier control gas engines Batteries would provide three five minutes flight Power takeoffs would adequate outstanding tried various motors propellers batteries before deciding proceed design settled included standard balsa-and-Lite Ply construction four Silver Streak motors PeckPolymers turning Cox 5 x 35 three-blade pusher propellers Futaba four-channel radio system speed control small servos Du-Bro V-tail mixer motors would wired parallel high-efficiency wire Sermos connectors would used six- sevencell 1 500-mAh battery pack would power everything wingspan slightly five feet set target weight 40 ounces hoped come under slightly optimistic final flying weight 46 ounces CONSTRUCTION wing built two halves joined middle balsa sheeting applied after halves joined motor mounts propeller-shaft support structures place allows easy access during alignment phase Because models symmetrical airfoil jig required build wing structure cannot lie flat workbench half wing flat root tip main spar has inflection rib 7 requires some extra care spar support elevations flat work surface shown table below elevation main spar rib 7 compensates inflection main spar T structure top bottom surfaces wing center portion made 2 balsa outer portion made 16 sure spars straight flat Pin piece work surface using straightedge guide vertical piece centered cyanoacrylate CyA glue used hold place forming shaped cross-section Attach spars work surface over plans supported elevations shown Supports several intermediate points will also help Spar Support Elevations LocationRootRib 7 Main Spar 00 0125 RearSpar1125075 Tip 00 01875 Cut ribs sheet balsa consistency put pattern inboard surface worthwhile mark top bottom left right pieces prevent confusion almostbut quitesymmetrical Cut main spar notches first place ribs jig locate rear spar location Because INTRODUCINO NFW" PRECISION PROP NUTS AND HUBS Now greater choice quality Tru-Turn products 3 sizes PROP NUTS ranging 5/8 7/8 diameter 2 shapes available stock RIG engine thread sizes 5 sizes PROP HUBS ranging 1 2 diameter 2 shapes new PROP NUTS PROP HUBS addition existing line precision aluminum spinners range 1-1/2 6 over 90 shapes sizes blade configurations new Tru-Turn PROP HUB line complimented extensive line over 70 adapter kits Tru-Turn makes adapter production RIG engine market have adapter problem. help phone call away. See hobby dealer call us direct. /IIZzJ7/TM Made n U S PRECISION MODEL PRODUCTS Romco Manufacturing Inc QUALITY VERSATILITY GREAT LOOKS TY PO Box 836 South Houston Texas 77587 713/ 943-1867 46 Model Aviation i w angles involved would difficult cut everything once maintain alignment spar notches place remove ribs form trim off portions leading trailing edges cut lightening holes Attach ribs bottom spars ribs need inclined 30 off vertical compensate dihedral angle bottom surface Use doubler rib 7 add strength inflection joint appears main spar ribs place top spars can added ribs attached spars leading trailing edges can added leading edge made 4 balsa Trial-fit pieces make sure ribs make firm contact Holding piece place mark top bottom points contacts rib Remove stock draw line root top contact points use guide trim excess material before glued place leading edge has large slot allow cooling air reach motors batteries speed control Cut slot before leading edge attached After glued place carefully trim material Remember structure fairly fragile before covered elevons built balsa similar procedure using leftover pieces ribs Use A6 plywood control horn Line up main wing locate hinge points Glue hinges elevons first used pin point hinges Carl Goldberg Models almost available hinge would work just well Cover elevons 1/32 balsa Sand shape Now elevon hinges can attached main wing use thick CyA epoxy thin CyA can wick hinge joint Elevon throw should 150 wing slots added next could find details used straight pieces 142 balsa sheet glued between ribs included appearance eieases 1995 Warbirds 95 & Birds Prey $1995 EACH S&1I SEND TO AMR PRODUCTIONS P0 BOX 1813 TOMS RIVER NJ 08754 GOT PROBLEM PAT 4221452 Re eta 3acA 1-SOFT MOUNTED ENGINESJLVE IT WITH WRECKING GLOW DRIVER 2-HARD TO GET AT PLUGHEAD 3LARGE/DEEP COWLING FITS ALL STANDARD PLUGS4FINGERS CLOSE TO PROP 5SCALE PROJEC NO HOR E Al OT E FROM K&B 2 STROKE TOHEAOLOCX GLOW DRIVER ENYA 4 STROKECdenct ST#021 SINGLE$995 ST#022 TWIN$1395 LOCK IF EYr AVAThAUZ $100 $200LB MODEL PRODUCTS CORPPO BOX 100 ALLAMUCHY NJ 07820908 850-1508 c4 Mills ls ] rIiITES Precision instruments I FREE COR CATALOG FREE CATALOGChoose over 200 exc t ng k tes LATIIESii unusual & nnovat ye des gns CAMPBELL TOOLS COI Call write catalog todayl 2100-M Selma RdI Wind l 541-0314 Spnngfield OH MA Pearl St Boulder CO 80302 513-3224502 1800 ruiter ordersl L rushless DC Motors & Dita1 d Controller Call 716-662-5651 Brochure & Oderfomi azecm Motors 57 Hawthorne Dr Orchard Park NY 14127 ction full-scale XB-35 used takeoff landings closed during normal flight know would effective model size motor mounts propeller-shaft housings built up 1/i6 plywood used ball bearings custom propeller adapters final shaft supports plywood nylon bearings would also work motor mounts constructed motors can removed servicing Align components best can before gluing place Misalignment can cause excessive vibration leading lack power eventual fatigue failures Spend little extra time balsa webbing between bottom propeller shaft supports trailing edge used absorb normal vibrations very important test-run motors support place next step join two wing halves main strength provided /16-plywood bulkhead main spar Balsa blocks top bottom used fill gaps between bulkhead spars Verify dihedral before gluing everything place Use slow-curing epoxy can adjust components necessary before adhesive sets two leading edges secured Aplywood strengthener 46-plywood rear bulkhead also holds servos Check servos fit properly mixer works before gluing things place Now can install elevon controls cables Secure cables ribs reduce slop improve control Attach main landing-gear support blocks steerable nose wheel support made /6 plywood A6 hole drilled through control cable also needs supported several places improve ground handling cover model build simple jig hold firmly center wingtips Note wing has 50 washout front wingtips point down slightly must built before covering added very OK Cub 049B Lug & radial mount Metal tank High RPM True Carburetion $14 EACH shpg per order 58 years OK engine history 80 page book Includes complete engine listings full color photos COLLECTOR EDITION $1195 p/p Set five color posters $15 year catalog/newsletter $2 accept VISA MASTERCARD OK ENGINES PO BOX 355 MOHAWK NY 13407 July1996 49 .aaaa Sa e1K Rake ASK 181/385 163span wing profile E193/197 weight Ca 115 lbs Roedelniodel ASK 211/45 l65span wing profile E393 weight Ca 115 lbs RawberE DIECUE 1/375 lS7span wing profile HO 30/14 weIght Ca 10 ibs Roebers AEW 24/271/35 157span wing profile HO 30/14 weight Ca ii lbs KrauEe SUlta 1/3 177span wing profile 11Q 3/14 weight Ca 135 ibs Rake DC 2021/35191 span wing profile E203/201/197 weight ca 11 lbs Ripo DC 6001/3 236span scale wing profile weight ca 25 lbs Euchele NimbuE 41/44 237span wing profile HO 3/14 3/13 weight Ca 14 lbs TOWPLANES FriNch PZL 104 WIlgo 1/4 i09span 79 long weight Ca 20-23 lbs aaaaaaa SuilpIanes Unlimited Ltd 63 East 82nd Stre et NYC NY 10028 East coast contact Robin Lehman 212 879-1634 Phone 212 535-5295 Fax West coast contact Mark Foster 213 257-4573 OK Cub 049A Radial mount Nylon tank High RPM True Carburetion important good flight characteristics Make sure correct amount washout present once covered cannot changed covering material 1A2 balsa sheet Start leading edge cover midpoint main spar forward leading edge Use thin CyA hold place Use extra-wide pieces balsa cover aft portion wing can glue two three four-inch-wide pieces together thin CyA Note access hatches enable service motors bellcranks etc cover areas Before both sides covered install dummy antenna wire will enable pull actual antenna through receiver installed Some may find easier install wire motors before wing fully covered although can also done afterward Once covering place remove airplane jigit should very torsionally stiff careful can easily poke finger through thin covering material Cut two air-exhaust hatches top surface shown plans Make hatch covers access openings out 1/3 balsa Secure small screws Use /s-wide strips /32 balsa cover propeller shaft housings Light filler can used necessary main nacelle shape now added wing surface Use A6 balsa bulkheads /16-square balsa runners Cover /32 sheet balsa Sand everything smooth paint model silver automotive trim paint keep weight down use too much paint pilots canopy molded plastic sheet vacuum-formed over wooden block has carved sanded shape Painting surface wing under canopy black attach canopy plastic cement small pilot head can added desired main landing gear formed 3A2 music wire nose gear formed As music wire have wire bender use two door-hinge pins held securely 50 Model Aviation 4On Antiques Military Civilian Helicopters Sailplanes have wA1 brgest aircraft Sxumentation collection 5800 different full color photo studies 1905-1996 33000 3-view line drawings New 1996 Catalog/Guide 188 pages Canada/Mexico $1000 Only $8 Overseas $1500 [A Bob Bankas e Model Research 3114 Yukon Avenue a Mesa CA 92626 79-8058 Look us net http/fimtnet/-]ms/scalehtml TT TOP VIEW ION PLOSOOSRIVER STREARaccess SATANS BLASE PASSER CROSTSOSEL S SO LACENIIT 0 PAREAOEO BRO 30320k SETAL-OUTBOAROMOTOR NOSEGEAR STEERING BELLCRANKCOPS- INSTALLATION SETAIL SECT D-O0550ELOI4 - -4 MOTORSPOELLE II-c.-1 -C- IPANSPOT BLADES PA NSES PROPSSIDE VIEWSECT B-B ITTSPECIFICATIONS SDNSEISTOTEBOSOALBIIS2I N oioN NCSTSTRICTIOSBOLT UP BALSE N PIT ST STCODERINABALSA SOEST CORP CS01ST SPARBA S SOS SASS AKSESOVEAPLE SATANTASRE BLADES 0505 ASIA NOPPOOCEELSNARN AREASTE S PA IN PEAK POTRNEBNSTSBNSEBLISPALOTE AR SIPAIIBBINSA AASISTIITB 000 PAMODEL AVIATION STOP SPOPTORELEARRIC SADROSSSIBAARINORThROP XR-35 PEAK PSLOBEBSONE ROB SAAEO RAKSOPS SETLITESSEELSFLYING WING BOMBER ASSFRONT LAB ABE ADNILSELL PROS5025AK S BSENISTES BT SLSSO S LACE PUPIC_____________ CIETAILINBOARO MOTORDONTDTPTIZSOO S/S/AT ARLATRA OTTOSTAUS BEEMBREBISP P814 1 N D -U 0 D D 0 D 0 IB BALSA SHEETVIAx 14 BALSAV32x VA BALSA V T SPARST E FACING 3B BALSA LEAD NG ESSE 723B GA R 9BALSA CE RB 332 BALSA LIGITENINHEEl HOLES3S2 SO BALSA BEAR SPARS R 7SGO BALSA SHEET R6 R 5332 BALSASB IA _____SHEETBOLSA T E R4 TRIM OUT TO LIGHTEN G32 BALSA SHEET VIA BALSA SHEET VIA BALSA SHEET SHEETIIG GO BALSA STRINGER PROPADAPTOR 9/IASIAA GM NOB 316 DIG HP OTASI THREAS S-AR AA PP ER WING RIE~ -- PLO 77r7T T PECK B/BVB14 SILVER OTBEG ELECTRIC MOlD SERVO BALSATO NOSEAHEEL L E TYPICAL MOTOR MOUNT DETAIL WING IA PLOASAS NOTE SPARS NEES TO BE TAPERED TG FIT IN WING TIP AREA R17 032 BALSA SHEET H 16 R 15 052 BALSA SHEET VA GALS LEVIA BASA SHEET 4 R I-I2-- 222-- Si 1- - IA BALSA SHEET Ru -LI__________ R3R2-5R2 GA BALSA LEASING EDGE R 10 BALsA R-IIIA BALSATRAILINGIHs3/BBALSA Sf32 BALSAESGETAPERED LE SHE ET 0/A SO BALSA STRINGER TTHCAL I//H BALSA F G H i//A BALSA SHEET VA SoEI/IA BALSA SHEET BALSA STRI BAER I/IA BALSA SHEET DI SLOE 2-BA RATS ON BACH D2 I//A PLOWOOD SERVO MOONTINA PLATE ItiTAI ATIANI TOP VIEW VIA GIG MW N 133 SERVOS----BAlSA TE TO SERVOGTO ELEVON SERVO INSTALLATION FRONT VIEW PLO 3/B IS I/B PLO VIA PLO ~ PLY INROARS 3/525 I/IA IN- BAAROOAT- BGABS NACELLE S MODEL AVIATION NOTHROP XB-35 FLYING WING BOMBER BESIANED BC CLARK CALKINS INKED PLANS BC DOE SEMARCO ALL N/BROS SNEER OVA CGAPIJ//GIZEO 4AAB GO OOATCAO SESESOEB B BPB vise about -inch apart Sullivan SkyLite wheels used components have installed check center gravity CG Youll want CG very close location plans indicate Start CG slightly ahead location shown plans Move batteries around adjust CG location dont add weight dont have models final weight should 44-48 ounces Flying flying wings characteristics will similar other normal aircraft CG properly located models elevons have very short moment arm cant correct CG off very much directional stability provided swept wing propellers adequate Pitch stability provided thrustline above CG elevon balancing forces combined symmetrical airfoil wing twist makes easily controlled aircraft did find bad habits smooth runway important will help prevent airplane bouncing around nose quite light runway smooth can use training wheels small wires trailing down wingtipsto help prevent airplane rotating too much tipping side other made several taxi tests get feel steering Slight misalignments main gear will make model hard control will find taxi airplane fairly fast may pop off ground suddenly let off throttle because propeller thrust exerts down force nose wheel let up sudden drag causes nose lift Its quite surprising first time happens prepare model its initial flight make sure batteries fully charged peak-charging best trim elevons up about 30 first flight close off wing slots clear plastic tape supposed improve low-speed handling increase drag making acceleration difficult Youll want takeoff directly wind possible apply full throttle model should get up speed 100 feet might need add little up elevon get off ground CG too far forward might get off does might able climb Once model air climb gradually builds up speed battery motor propeller combination adequate airplane definitely overpowered careful turns until get feel model Turn slowly first symmetrical-airfoil wing little dihedral will prevent airplane righting itself after turn will have turn model back straighten out should able cut power back conserve batteries after 30 seconds Keep airplane close bywith type aircraft easy lose orientation gets too far away Because light wing loading wind gusts will quite noticeable Landing much different other airplanes although such light wing loading does tend float will find decelerates power cut due high propeller area reason best land under power sight sound model air amazing sure brought back memories k Calkins 1907 Alvarado Ave Walnut Creek CA 94596 References Kohn Leo J Flying Wings Northrop 1974 Maloney Edward T Northrop Flying Wings 1975 Wooldridge ET Winged Wonders Story Flying Wings 1983 TVITT Wing Thing Tailless aircraft group Box 20430 El Cajon CA 92021 II Tfle maII oI SpecialistsSENDI FOR YOUR IOVER 2000 TOOLS & ACCESSORIES COPY Brand Names. Unusual Items.TODAY Exclusive Products savings upI Ito 60% designed make project Ieasier enjoyable professional I TO ORDER Send $100 coupon name address ADDRESS_____________________________________________________[v33][b15482997132525540]] MicroMark 2058 Snyder AveI Berkeley Heights NJ 07922-1595CiTY_____________________________ STATE_________ ZIP____________ II Ba Large tube modal 5995 Gats fingers sway prop Mounts anywhere model must scale models eliminates need hole cowl needle valve needle lves 5 Easy dieap fix broken Get engine ruimingperfedlly countsin air ever again blows flight because bad mixture sdtin& in-flight engine shutoff smoke valve Top leror used tIn setup valve ean placsd enider rowi m fssdag Extra savo & adi diarusel required Soth vslvu gusranteed require no nigine modifications Just opine needle valve leave alone inst needle valve off ranove wanL Ranote & in-flight valvin work glow-ping asginra whidi ma use medium 3132 id fled tubing Lange tube lM id models viny large & some rang glow aiginra Contains task thai line leaks dont have feel-proof tank ares Makes tank isalaltation caner Leaks trapped p1551k bag sealed 13/16 hole firewall tubber cosuixeasion ring Keeps feel oil firewall oat feselage use glow feel Patent pendin& LekCatcher plus 13/16 drill bIt drilling firewall hole required LeakCatcher $295 1nsla-cure thin CA lasts-cure n gap filling CA 1 ox $395 2 ox $625 Odorless Super-Golds thin CA Super-Cold filling CA ox S795 2 ox S1395 lasts-Set CA Accelerator 2 ox $395 order call 1400 765-0474 Visa & MC accepted Ask aboet ow club discounts send check MO Atlantic it/C Products Inc P0 Box 523007 Springfield VA 22152 Free shipping orders over $20 Add $350 shipping handling ordors snidor $20 vArwidonts add 45% sales tax Dmlmmouiries invited July1996 53 Alantic RIC mixture valves safety convenience Get freedom safely control engines mixture needle anywhere model flight using new patented principle No TIME LettheRed Baron Building building service specializing scale RC Aircraft Warblrds aera Classic Aircraft Racing Aircraft Kis Iron Byron Originals Proctor Nick Ziroll Plans hon Ntwsl size scale kit Coming Soon New 10 Super Scale Laser Cit Kits Gee Bee 7 1/3 Scale 94 wingspan Nine other kits Send $200 Catalog RED BARON INTERNATIONAL 710 Cleveland Ste 4 Idaho Falls ID 83402 Call us quote today 208-528-0427