THE 4B2 Beginners Too de signed incorporate flying require ments basic trainer put reasonably sized package would pleasing look us fly unimproved fields easily hand-launched simple un usual modeler drawn model emotion reason personally know three newcomers radio-controlled flying built Kwik-Fly IIIs built Royal Phantom II because looked great left area before flown think can guess what happened trainer would have look good enough make flyer proud both air ground firmly lieve kind trainer will result faster learning novice pilot addition model would have ca pable advanced maneuvers soon flyer ready Beginners Too David E Pastor 4B2 designed larger usual frontal area Streamlined like brick might say reason fledgling flyer wouldnt suddenly find him self Mach-two dive let nose drop profile decided upon reminis cent some early monoplanes allowed large firewall integrated rest design design simple no carving except shaping wing leading edge headrest fairing simply 3/16 thick piece balsa looks good close-up provides some thing extra model profile wing has Clark Y airfoil simple build yet provides excellent lift Too beginners get tied down building first model could learning fly model can ready finishing very few hours An easy model build also easy model repair Also modelers shy away scratch-building because looks complicated design can carboned cut out assembled faster some models know can assembled kits model light allows use 10 15 engines inexpensive use little fuel side benefit small fuel tank quart fuel sufficient long day field Also bulb-type filler practical inexpen sive No small factor choice en gines much less formidable beginner think about cranking over small engine large light model 350 375 sq wing area will needed model could now kept small enough fit small cars completed model Cox 15 engine minus radio weighed 27 ounces roomy interior provided Most beginners start sport-type radio gear room standard servos primary importance Too beginners end up badly balanced model because lack interior space best com 26 Model Aviation Straight lines design easy build though design functional proportions yield pleasing look Light weight allows use fuel-saving 09 15 engines Color scheme Wing yellow fuselage dark gray stab red rudder red yellow striped Lettering fin yellow black wing Only carving required shaping wing leading edge Clevises horns pushrods tail show skeleton ready covering wing features old stand-by flat-bottomed Clark V airfoil photo Simple sheet headrest cinch build flat work bench Covering too snap spite its three-channel cut-off canopy add touch realism limitations 4B2 does slow axial rolls will fly inverted promise usually results have also found outside access large fuel tank battery compartment will result neater installation Well day came show 4B2 rest club day very windy crosswind new flying field has no provision cross wind run way hasnt seeded yet almost packed up go home pride design fact easy hand launch made stick out cranked up Cox per instructions says run very rich 60 seconds lean out fly Believe works little engine really cranks out power new After 60 seconds running still running little rich tached 12000 rpm vibra-tach using 8-4 prop After checking radio gave good trusted friend launch literally flew out hand maintained 600 climb altitude throt tled back trimmed started having ball no tendency pitch up rolled out turn yet will pull itself out dive very quickly very little trim change 1/3 full throttle idle little up trim needed hold easy glide stall gentle straight ahead will fly long after think should have stalled Landing another surprise lands slowly havent tipped onto prop yet rough ground flying site lands normally three-point attitude rolls few feet 4B2 ball fly An old expert 3-channel maneuvers impressed beautiful axial slow rolls showed him some inverted flying barrel rolls Slow speed maneuvering positive pushrods attached distances shown plans experi enced flyer little rudder can used sufficient elevator travel shown increasing travel should done very smooth sticks now just what intended design light easily-built basic trainer looks like mini-fighter fun fly both beginner sport flyer Cox 09 Max 10 have plenty power 3-channel flying yet 15 will make excellent fun air plane fly fields wouldnt dream taking highpowered sport pattern model Before starting build model select balsa fuselage sides carefully make building easier should equal stiffness wing leading edge should chosen straightness less warp built wing beginning less trouble will later balsa top hatch lower front fuselage should hard Contact cement used attaching doublers fast very strong Epoxy used formers Fl F2 F3 wing dihedral braces Titebond model ce ment used everything else fuselage can built lap neces 4B2 simple nice flying model As basic primary trainer fills gap between getting started full aerobatics sary wing will have pinned down during initial stages construc tion clear workbench might nickname design Rubber Band Special wing held down rubber bands landing gear held too reason simple Hard landings com mon occurrence novice pilot some us old timers arent too smooth either bands allow gear shift pop clear obstacle hit during land ing damaging model gear also easily removed cleaning re bendingturn page November1975 27 Rear-quarter view shoulder-wing configuration proves its acceptable appearancejust wee bit racy looking 15 will take off fields wouldnt dream taking some ships Control areas adequate experienced might like rudder AboveUnderview wing Spars webbed Out fourth ribribs cap-stripped Left Things fall place roomy fuselage Below Note neat hatch fit Trailing edge two sheets webs Beginners Too Fuselage Lay fuselage sides flat surface remember right left side attach doublers upper lower sq rear fuselage stringers Mark top centers Fl F2 F3 front top piece Epoxy F2 F3 place holding fuse lage sides together rear clothes pins sighting across centers F2 F3 rear assure correct align ment dry epoxy Fl place add 1/8 plywood piece bottom plywood piece supports landing gear will used reference alignment After have dried fuselage top can pinned place critical part fuselage assembly Make sure part cut out accu rately Pull rear fuselage gether hold clothespins piece 3/16 scrap between fuselage sides lay top place pin Sight front across center marks FL F2 F3 front top piece marks should line vertical stabilizer cutout straight Adjust top piece fuselage rear necessary aligned glue top F4 pin well top has dried add 1/8 sq cross pieces below Mount vertical stabilizer make sure vertical build ing board fuselage should resting 1/8 plywood landing gear support alignment references made necessary weigh down fuselage rests piece Glue vertical stabilizer F4 fuselage sides rear Place bead continued page 72 Three servos fit side side plenty space Tank too accessible Sheet metal gear old fashioned rubber strap-on type 1/ISP 16 v-IPER SR TA S I SI z 1651/a p 0CAPS _____1I1 ___ 1/15 ~EER-_____ 64.3/1EA1-7/8S-EPT ASR SA IIREOFIAI SOTh 565 TIPS -75 I-HI POIT 1/16 SPACER REDS RED DIR 115 CO1RRsC pO1p1/A RARDWDOD DOvELS S~4 D/5E - /V-- ZZ - IIjCZt---C NYLON __JHNGES FOR SlUR C 0 MDA/DOER 1/16OPPSET TO UP SIC SI TOR 50517555 182 555000Li 3/16 SlYEST DPI Li/A - P SGGESTEOOs/F I1R ENOT- QE 1/4 OS/PP OITLNE POEDRPOP SCRE OSMAR 10 -1DIALER SE DOMMERCIA ENGINE T/uRI-EP RAND EELS w- 213 1/8 P055009--WISO SPAN 46ASFA 360 WAENGINE 10-15RADIO /3CRANNEs DESIGNEDE DAREII HAROLD IDRAWN PASTOR j NEED RI/AR 28 Model Aviation U ISO CZ 551 p-rn zO Orn IDA Am DC S SO 5- Ax CA Al mA 0 0 GREAT XMAS GIFT ENAMELED TIE TACS$47b pp Beginners Too/Pastor continued page 28 glue comes out top fuselage Mount horizontal stabilizer making sure perpendicular vertical stabilizer parallel build ing board Plan pushrod layout fore adding bottom sheeting Remem ber balsa lower fuselage has grain running across fuselage Inexpen sive aluminum engine mounts will need ed Down-thrust has been- provided Use two washers under left-side mount screws right thrust offset mount slightly prop centered Temporarily mount engine trim front fuselage necessary prop clearance Remember use selflocking nuts hold mount fire wall use blind nuts since struc tural strength lost hatch simple Cut piece locate screws will go Drill out 1/4 glue piece 1/4 dowel dry drill 1/16 through center dowel Continue hole 1/8 ply cross pieces holding hatch place Remove hatch drill out 1/16 hole body clearance #3 #4 wood screw Glue bottom hatch supports finished hatch Complete sheeting sand four 1/4 dowels can installed now heat-shrink covering used add after covering Wing The wing straightforward Use straightest spruce spars can find Cut ribs once band saw jig saw using 4 wide 1/16 sheets can save sheet cutting top trailing edge strips inch wide sheeting top front wing cut 2-5/8 wide Make sure wing pinned down solidly during initial construction Use scrap 1/16 balsa shims under rib/spar joint under front first two ribs As wing half completed cap ribs cap first two ribs since center sheeting will cover build right wing plans left wing shown wipe 3-in-I oil plan lines will show through back can used right wing plan join wing halves place 1-7/8 shim under outboard rib half Cut sand smooth dihedral break use epoxy join leading edge spars trailing edge Next epoxy W3 place dry turn wing over epoxy WI W2 Cut center rib 1/8 thick piece fits between WI W2 other fits tween W3 trailing edge Glue pieces place Finally sheet center section top bottom Cut pieces / 16 plywood cover trailing edge sheeting wing center out second rib protection against rubber band nicks Place wing fuselage again using lower plywood landing gear sup port reference sand wing saddle necessary level wing Also make sure wing tip fuselage rear dis tance same both sides Sand completed wing Make sure balsa joints smooth Check wing time see warps steam out Finishing finishing method up however strongly recommend heat-shrink covering strong light weight easily applied used Mono kote fuselage easy cover sure cover bottom hatch will keep warping allowing fuel enter front compart- ment After fuselage has covered fuel-proof engine compartment dope epoxy line hatch opening wing saddle tape Attach miniature pilot choice epoxy silicon adhesive will assure dont end up him rattling around inside canopy canopy cut open rear simplicity placed model outline marked Monokote Re move 1/16 wide piece covering epoxy canopy fuselage top Use thin strip Monokote joint Half should sealed fuselage half canopy careful over heat canopy covering wing work side time Cover top bottom wing working center shrink rib width time both top bottom wing After wing has covered completely check warps can removed very easily twisting wing opposite direction reheating Monokote Let wing set about 24 hours recheck sarps attempt fly wing warp doesnt take much give same results fully deflected ailerons Check after large changes weather well expert flyer finds visible model easier fly Use bright colors wing tail Yellow excellent color bright day like having flashlights mounted wing bank model cant mistake direction bank Another guide would put reflective tape wing leading edge really helps during approaches especially light gets bad twi light 4B2 now complete except final placement servos receiver everything model including pushrods foam attach wing check center gravity plenty room move servos receiver around put CG want final CG should slightly ahead point shown plans Never accept CG aft point satisfied epoxy servo mounts cut pushrods fit sembled rudder elevator should zero-zero position servos neutral model built straight center gravity right place going enjoy flying ginner going satisfied flying figure-eights very long will agree great flying model ball fly beginners too Additional Flying Notes After flying 4B2 six months decided see what pitfalls would encountered prospective builder decided install larger suggested engine installed 0 5 Max 20 muffler Tatone mount found three primary areas affected first area weight en gine receiver battery locations swapped keep recommended center gravity leaves servos vulnerable damage should aircraft crash second problem uncovered need set very low idle normal idle 20 enough cause 4B2 float considerable distance ground effect flown onto ground good trainer reliable idle must difficult get reliable idle slow enough land model normally last problem ele vator trim specd now attainable considerable down trim required worse trim changes required different power settings conclusion ex perienced RC pilot build 4B2 fun project critical problem areas can compensated piloting tech nique newcomer R/C fly ing overpower model flies beautifully recommended engines does need extra power 72 Model Aviation WWII SCALE AIRCRAFT PLANS -- I Send $100 caxalogue containing copy Supersuale drawing Superscale Box 201 Arlington Texas 76012
Edition: Model Aviation - 1975/11
Page Numbers: 26, 27, 28, 72
THE 4B2 Beginners Too de signed incorporate flying require ments basic trainer put reasonably sized package would pleasing look us fly unimproved fields easily hand-launched simple un usual modeler drawn model emotion reason personally know three newcomers radio-controlled flying built Kwik-Fly IIIs built Royal Phantom II because looked great left area before flown think can guess what happened trainer would have look good enough make flyer proud both air ground firmly lieve kind trainer will result faster learning novice pilot addition model would have ca pable advanced maneuvers soon flyer ready Beginners Too David E Pastor 4B2 designed larger usual frontal area Streamlined like brick might say reason fledgling flyer wouldnt suddenly find him self Mach-two dive let nose drop profile decided upon reminis cent some early monoplanes allowed large firewall integrated rest design design simple no carving except shaping wing leading edge headrest fairing simply 3/16 thick piece balsa looks good close-up provides some thing extra model profile wing has Clark Y airfoil simple build yet provides excellent lift Too beginners get tied down building first model could learning fly model can ready finishing very few hours An easy model build also easy model repair Also modelers shy away scratch-building because looks complicated design can carboned cut out assembled faster some models know can assembled kits model light allows use 10 15 engines inexpensive use little fuel side benefit small fuel tank quart fuel sufficient long day field Also bulb-type filler practical inexpen sive No small factor choice en gines much less formidable beginner think about cranking over small engine large light model 350 375 sq wing area will needed model could now kept small enough fit small cars completed model Cox 15 engine minus radio weighed 27 ounces roomy interior provided Most beginners start sport-type radio gear room standard servos primary importance Too beginners end up badly balanced model because lack interior space best com 26 Model Aviation Straight lines design easy build though design functional proportions yield pleasing look Light weight allows use fuel-saving 09 15 engines Color scheme Wing yellow fuselage dark gray stab red rudder red yellow striped Lettering fin yellow black wing Only carving required shaping wing leading edge Clevises horns pushrods tail show skeleton ready covering wing features old stand-by flat-bottomed Clark V airfoil photo Simple sheet headrest cinch build flat work bench Covering too snap spite its three-channel cut-off canopy add touch realism limitations 4B2 does slow axial rolls will fly inverted promise usually results have also found outside access large fuel tank battery compartment will result neater installation Well day came show 4B2 rest club day very windy crosswind new flying field has no provision cross wind run way hasnt seeded yet almost packed up go home pride design fact easy hand launch made stick out cranked up Cox per instructions says run very rich 60 seconds lean out fly Believe works little engine really cranks out power new After 60 seconds running still running little rich tached 12000 rpm vibra-tach using 8-4 prop After checking radio gave good trusted friend launch literally flew out hand maintained 600 climb altitude throt tled back trimmed started having ball no tendency pitch up rolled out turn yet will pull itself out dive very quickly very little trim change 1/3 full throttle idle little up trim needed hold easy glide stall gentle straight ahead will fly long after think should have stalled Landing another surprise lands slowly havent tipped onto prop yet rough ground flying site lands normally three-point attitude rolls few feet 4B2 ball fly An old expert 3-channel maneuvers impressed beautiful axial slow rolls showed him some inverted flying barrel rolls Slow speed maneuvering positive pushrods attached distances shown plans experi enced flyer little rudder can used sufficient elevator travel shown increasing travel should done very smooth sticks now just what intended design light easily-built basic trainer looks like mini-fighter fun fly both beginner sport flyer Cox 09 Max 10 have plenty power 3-channel flying yet 15 will make excellent fun air plane fly fields wouldnt dream taking highpowered sport pattern model Before starting build model select balsa fuselage sides carefully make building easier should equal stiffness wing leading edge should chosen straightness less warp built wing beginning less trouble will later balsa top hatch lower front fuselage should hard Contact cement used attaching doublers fast very strong Epoxy used formers Fl F2 F3 wing dihedral braces Titebond model ce ment used everything else fuselage can built lap neces 4B2 simple nice flying model As basic primary trainer fills gap between getting started full aerobatics sary wing will have pinned down during initial stages construc tion clear workbench might nickname design Rubber Band Special wing held down rubber bands landing gear held too reason simple Hard landings com mon occurrence novice pilot some us old timers arent too smooth either bands allow gear shift pop clear obstacle hit during land ing damaging model gear also easily removed cleaning re bendingturn page November1975 27 Rear-quarter view shoulder-wing configuration proves its acceptable appearancejust wee bit racy looking 15 will take off fields wouldnt dream taking some ships Control areas adequate experienced might like rudder AboveUnderview wing Spars webbed Out fourth ribribs cap-stripped Left Things fall place roomy fuselage Below Note neat hatch fit Trailing edge two sheets webs Beginners Too Fuselage Lay fuselage sides flat surface remember right left side attach doublers upper lower sq rear fuselage stringers Mark top centers Fl F2 F3 front top piece Epoxy F2 F3 place holding fuse lage sides together rear clothes pins sighting across centers F2 F3 rear assure correct align ment dry epoxy Fl place add 1/8 plywood piece bottom plywood piece supports landing gear will used reference alignment After have dried fuselage top can pinned place critical part fuselage assembly Make sure part cut out accu rately Pull rear fuselage gether hold clothespins piece 3/16 scrap between fuselage sides lay top place pin Sight front across center marks FL F2 F3 front top piece marks should line vertical stabilizer cutout straight Adjust top piece fuselage rear necessary aligned glue top F4 pin well top has dried add 1/8 sq cross pieces below Mount vertical stabilizer make sure vertical build ing board fuselage should resting 1/8 plywood landing gear support alignment references made necessary weigh down fuselage rests piece Glue vertical stabilizer F4 fuselage sides rear Place bead continued page 72 Three servos fit side side plenty space Tank too accessible Sheet metal gear old fashioned rubber strap-on type 1/ISP 16 v-IPER SR TA S I SI z 1651/a p 0CAPS _____1I1 ___ 1/15 ~EER-_____ 64.3/1EA1-7/8S-EPT ASR SA IIREOFIAI SOTh 565 TIPS -75 I-HI POIT 1/16 SPACER REDS RED DIR 115 CO1RRsC pO1p1/A RARDWDOD DOvELS S~4 D/5E - /V-- ZZ - IIjCZt---C NYLON __JHNGES FOR SlUR C 0 MDA/DOER 1/16OPPSET TO UP SIC SI TOR 50517555 182 555000Li 3/16 SlYEST DPI Li/A - P SGGESTEOOs/F I1R ENOT- QE 1/4 OS/PP OITLNE POEDRPOP SCRE OSMAR 10 -1DIALER SE DOMMERCIA ENGINE T/uRI-EP RAND EELS w- 213 1/8 P055009--WISO SPAN 46ASFA 360 WAENGINE 10-15RADIO /3CRANNEs DESIGNEDE DAREII HAROLD IDRAWN PASTOR j NEED RI/AR 28 Model Aviation U ISO CZ 551 p-rn zO Orn IDA Am DC S SO 5- Ax CA Al mA 0 0 GREAT XMAS GIFT ENAMELED TIE TACS$47b pp Beginners Too/Pastor continued page 28 glue comes out top fuselage Mount horizontal stabilizer making sure perpendicular vertical stabilizer parallel build ing board Plan pushrod layout fore adding bottom sheeting Remem ber balsa lower fuselage has grain running across fuselage Inexpen sive aluminum engine mounts will need ed Down-thrust has been- provided Use two washers under left-side mount screws right thrust offset mount slightly prop centered Temporarily mount engine trim front fuselage necessary prop clearance Remember use selflocking nuts hold mount fire wall use blind nuts since struc tural strength lost hatch simple Cut piece locate screws will go Drill out 1/4 glue piece 1/4 dowel dry drill 1/16 through center dowel Continue hole 1/8 ply cross pieces holding hatch place Remove hatch drill out 1/16 hole body clearance #3 #4 wood screw Glue bottom hatch supports finished hatch Complete sheeting sand four 1/4 dowels can installed now heat-shrink covering used add after covering Wing The wing straightforward Use straightest spruce spars can find Cut ribs once band saw jig saw using 4 wide 1/16 sheets can save sheet cutting top trailing edge strips inch wide sheeting top front wing cut 2-5/8 wide Make sure wing pinned down solidly during initial construction Use scrap 1/16 balsa shims under rib/spar joint under front first two ribs As wing half completed cap ribs cap first two ribs since center sheeting will cover build right wing plans left wing shown wipe 3-in-I oil plan lines will show through back can used right wing plan join wing halves place 1-7/8 shim under outboard rib half Cut sand smooth dihedral break use epoxy join leading edge spars trailing edge Next epoxy W3 place dry turn wing over epoxy WI W2 Cut center rib 1/8 thick piece fits between WI W2 other fits tween W3 trailing edge Glue pieces place Finally sheet center section top bottom Cut pieces / 16 plywood cover trailing edge sheeting wing center out second rib protection against rubber band nicks Place wing fuselage again using lower plywood landing gear sup port reference sand wing saddle necessary level wing Also make sure wing tip fuselage rear dis tance same both sides Sand completed wing Make sure balsa joints smooth Check wing time see warps steam out Finishing finishing method up however strongly recommend heat-shrink covering strong light weight easily applied used Mono kote fuselage easy cover sure cover bottom hatch will keep warping allowing fuel enter front compart- ment After fuselage has covered fuel-proof engine compartment dope epoxy line hatch opening wing saddle tape Attach miniature pilot choice epoxy silicon adhesive will assure dont end up him rattling around inside canopy canopy cut open rear simplicity placed model outline marked Monokote Re move 1/16 wide piece covering epoxy canopy fuselage top Use thin strip Monokote joint Half should sealed fuselage half canopy careful over heat canopy covering wing work side time Cover top bottom wing working center shrink rib width time both top bottom wing After wing has covered completely check warps can removed very easily twisting wing opposite direction reheating Monokote Let wing set about 24 hours recheck sarps attempt fly wing warp doesnt take much give same results fully deflected ailerons Check after large changes weather well expert flyer finds visible model easier fly Use bright colors wing tail Yellow excellent color bright day like having flashlights mounted wing bank model cant mistake direction bank Another guide would put reflective tape wing leading edge really helps during approaches especially light gets bad twi light 4B2 now complete except final placement servos receiver everything model including pushrods foam attach wing check center gravity plenty room move servos receiver around put CG want final CG should slightly ahead point shown plans Never accept CG aft point satisfied epoxy servo mounts cut pushrods fit sembled rudder elevator should zero-zero position servos neutral model built straight center gravity right place going enjoy flying ginner going satisfied flying figure-eights very long will agree great flying model ball fly beginners too Additional Flying Notes After flying 4B2 six months decided see what pitfalls would encountered prospective builder decided install larger suggested engine installed 0 5 Max 20 muffler Tatone mount found three primary areas affected first area weight en gine receiver battery locations swapped keep recommended center gravity leaves servos vulnerable damage should aircraft crash second problem uncovered need set very low idle normal idle 20 enough cause 4B2 float considerable distance ground effect flown onto ground good trainer reliable idle must difficult get reliable idle slow enough land model normally last problem ele vator trim specd now attainable considerable down trim required worse trim changes required different power settings conclusion ex perienced RC pilot build 4B2 fun project critical problem areas can compensated piloting tech nique newcomer R/C fly ing overpower model flies beautifully recommended engines does need extra power 72 Model Aviation WWII SCALE AIRCRAFT PLANS -- I Send $100 caxalogue containing copy Supersuale drawing Superscale Box 201 Arlington Texas 76012
Edition: Model Aviation - 1975/11
Page Numbers: 26, 27, 28, 72
THE 4B2 Beginners Too de signed incorporate flying require ments basic trainer put reasonably sized package would pleasing look us fly unimproved fields easily hand-launched simple un usual modeler drawn model emotion reason personally know three newcomers radio-controlled flying built Kwik-Fly IIIs built Royal Phantom II because looked great left area before flown think can guess what happened trainer would have look good enough make flyer proud both air ground firmly lieve kind trainer will result faster learning novice pilot addition model would have ca pable advanced maneuvers soon flyer ready Beginners Too David E Pastor 4B2 designed larger usual frontal area Streamlined like brick might say reason fledgling flyer wouldnt suddenly find him self Mach-two dive let nose drop profile decided upon reminis cent some early monoplanes allowed large firewall integrated rest design design simple no carving except shaping wing leading edge headrest fairing simply 3/16 thick piece balsa looks good close-up provides some thing extra model profile wing has Clark Y airfoil simple build yet provides excellent lift Too beginners get tied down building first model could learning fly model can ready finishing very few hours An easy model build also easy model repair Also modelers shy away scratch-building because looks complicated design can carboned cut out assembled faster some models know can assembled kits model light allows use 10 15 engines inexpensive use little fuel side benefit small fuel tank quart fuel sufficient long day field Also bulb-type filler practical inexpen sive No small factor choice en gines much less formidable beginner think about cranking over small engine large light model 350 375 sq wing area will needed model could now kept small enough fit small cars completed model Cox 15 engine minus radio weighed 27 ounces roomy interior provided Most beginners start sport-type radio gear room standard servos primary importance Too beginners end up badly balanced model because lack interior space best com 26 Model Aviation Straight lines design easy build though design functional proportions yield pleasing look Light weight allows use fuel-saving 09 15 engines Color scheme Wing yellow fuselage dark gray stab red rudder red yellow striped Lettering fin yellow black wing Only carving required shaping wing leading edge Clevises horns pushrods tail show skeleton ready covering wing features old stand-by flat-bottomed Clark V airfoil photo Simple sheet headrest cinch build flat work bench Covering too snap spite its three-channel cut-off canopy add touch realism limitations 4B2 does slow axial rolls will fly inverted promise usually results have also found outside access large fuel tank battery compartment will result neater installation Well day came show 4B2 rest club day very windy crosswind new flying field has no provision cross wind run way hasnt seeded yet almost packed up go home pride design fact easy hand launch made stick out cranked up Cox per instructions says run very rich 60 seconds lean out fly Believe works little engine really cranks out power new After 60 seconds running still running little rich tached 12000 rpm vibra-tach using 8-4 prop After checking radio gave good trusted friend launch literally flew out hand maintained 600 climb altitude throt tled back trimmed started having ball no tendency pitch up rolled out turn yet will pull itself out dive very quickly very little trim change 1/3 full throttle idle little up trim needed hold easy glide stall gentle straight ahead will fly long after think should have stalled Landing another surprise lands slowly havent tipped onto prop yet rough ground flying site lands normally three-point attitude rolls few feet 4B2 ball fly An old expert 3-channel maneuvers impressed beautiful axial slow rolls showed him some inverted flying barrel rolls Slow speed maneuvering positive pushrods attached distances shown plans experi enced flyer little rudder can used sufficient elevator travel shown increasing travel should done very smooth sticks now just what intended design light easily-built basic trainer looks like mini-fighter fun fly both beginner sport flyer Cox 09 Max 10 have plenty power 3-channel flying yet 15 will make excellent fun air plane fly fields wouldnt dream taking highpowered sport pattern model Before starting build model select balsa fuselage sides carefully make building easier should equal stiffness wing leading edge should chosen straightness less warp built wing beginning less trouble will later balsa top hatch lower front fuselage should hard Contact cement used attaching doublers fast very strong Epoxy used formers Fl F2 F3 wing dihedral braces Titebond model ce ment used everything else fuselage can built lap neces 4B2 simple nice flying model As basic primary trainer fills gap between getting started full aerobatics sary wing will have pinned down during initial stages construc tion clear workbench might nickname design Rubber Band Special wing held down rubber bands landing gear held too reason simple Hard landings com mon occurrence novice pilot some us old timers arent too smooth either bands allow gear shift pop clear obstacle hit during land ing damaging model gear also easily removed cleaning re bendingturn page November1975 27 Rear-quarter view shoulder-wing configuration proves its acceptable appearancejust wee bit racy looking 15 will take off fields wouldnt dream taking some ships Control areas adequate experienced might like rudder AboveUnderview wing Spars webbed Out fourth ribribs cap-stripped Left Things fall place roomy fuselage Below Note neat hatch fit Trailing edge two sheets webs Beginners Too Fuselage Lay fuselage sides flat surface remember right left side attach doublers upper lower sq rear fuselage stringers Mark top centers Fl F2 F3 front top piece Epoxy F2 F3 place holding fuse lage sides together rear clothes pins sighting across centers F2 F3 rear assure correct align ment dry epoxy Fl place add 1/8 plywood piece bottom plywood piece supports landing gear will used reference alignment After have dried fuselage top can pinned place critical part fuselage assembly Make sure part cut out accu rately Pull rear fuselage gether hold clothespins piece 3/16 scrap between fuselage sides lay top place pin Sight front across center marks FL F2 F3 front top piece marks should line vertical stabilizer cutout straight Adjust top piece fuselage rear necessary aligned glue top F4 pin well top has dried add 1/8 sq cross pieces below Mount vertical stabilizer make sure vertical build ing board fuselage should resting 1/8 plywood landing gear support alignment references made necessary weigh down fuselage rests piece Glue vertical stabilizer F4 fuselage sides rear Place bead continued page 72 Three servos fit side side plenty space Tank too accessible Sheet metal gear old fashioned rubber strap-on type 1/ISP 16 v-IPER SR TA S I SI z 1651/a p 0CAPS _____1I1 ___ 1/15 ~EER-_____ 64.3/1EA1-7/8S-EPT ASR SA IIREOFIAI SOTh 565 TIPS -75 I-HI POIT 1/16 SPACER REDS RED DIR 115 CO1RRsC pO1p1/A RARDWDOD DOvELS S~4 D/5E - /V-- ZZ - IIjCZt---C NYLON __JHNGES FOR SlUR C 0 MDA/DOER 1/16OPPSET TO UP SIC SI TOR 50517555 182 555000Li 3/16 SlYEST DPI Li/A - P SGGESTEOOs/F I1R ENOT- QE 1/4 OS/PP OITLNE POEDRPOP SCRE OSMAR 10 -1DIALER SE DOMMERCIA ENGINE T/uRI-EP RAND EELS w- 213 1/8 P055009--WISO SPAN 46ASFA 360 WAENGINE 10-15RADIO /3CRANNEs DESIGNEDE DAREII HAROLD IDRAWN PASTOR j NEED RI/AR 28 Model Aviation U ISO CZ 551 p-rn zO Orn IDA Am DC S SO 5- Ax CA Al mA 0 0 GREAT XMAS GIFT ENAMELED TIE TACS$47b pp Beginners Too/Pastor continued page 28 glue comes out top fuselage Mount horizontal stabilizer making sure perpendicular vertical stabilizer parallel build ing board Plan pushrod layout fore adding bottom sheeting Remem ber balsa lower fuselage has grain running across fuselage Inexpen sive aluminum engine mounts will need ed Down-thrust has been- provided Use two washers under left-side mount screws right thrust offset mount slightly prop centered Temporarily mount engine trim front fuselage necessary prop clearance Remember use selflocking nuts hold mount fire wall use blind nuts since struc tural strength lost hatch simple Cut piece locate screws will go Drill out 1/4 glue piece 1/4 dowel dry drill 1/16 through center dowel Continue hole 1/8 ply cross pieces holding hatch place Remove hatch drill out 1/16 hole body clearance #3 #4 wood screw Glue bottom hatch supports finished hatch Complete sheeting sand four 1/4 dowels can installed now heat-shrink covering used add after covering Wing The wing straightforward Use straightest spruce spars can find Cut ribs once band saw jig saw using 4 wide 1/16 sheets can save sheet cutting top trailing edge strips inch wide sheeting top front wing cut 2-5/8 wide Make sure wing pinned down solidly during initial construction Use scrap 1/16 balsa shims under rib/spar joint under front first two ribs As wing half completed cap ribs cap first two ribs since center sheeting will cover build right wing plans left wing shown wipe 3-in-I oil plan lines will show through back can used right wing plan join wing halves place 1-7/8 shim under outboard rib half Cut sand smooth dihedral break use epoxy join leading edge spars trailing edge Next epoxy W3 place dry turn wing over epoxy WI W2 Cut center rib 1/8 thick piece fits between WI W2 other fits tween W3 trailing edge Glue pieces place Finally sheet center section top bottom Cut pieces / 16 plywood cover trailing edge sheeting wing center out second rib protection against rubber band nicks Place wing fuselage again using lower plywood landing gear sup port reference sand wing saddle necessary level wing Also make sure wing tip fuselage rear dis tance same both sides Sand completed wing Make sure balsa joints smooth Check wing time see warps steam out Finishing finishing method up however strongly recommend heat-shrink covering strong light weight easily applied used Mono kote fuselage easy cover sure cover bottom hatch will keep warping allowing fuel enter front compart- ment After fuselage has covered fuel-proof engine compartment dope epoxy line hatch opening wing saddle tape Attach miniature pilot choice epoxy silicon adhesive will assure dont end up him rattling around inside canopy canopy cut open rear simplicity placed model outline marked Monokote Re move 1/16 wide piece covering epoxy canopy fuselage top Use thin strip Monokote joint Half should sealed fuselage half canopy careful over heat canopy covering wing work side time Cover top bottom wing working center shrink rib width time both top bottom wing After wing has covered completely check warps can removed very easily twisting wing opposite direction reheating Monokote Let wing set about 24 hours recheck sarps attempt fly wing warp doesnt take much give same results fully deflected ailerons Check after large changes weather well expert flyer finds visible model easier fly Use bright colors wing tail Yellow excellent color bright day like having flashlights mounted wing bank model cant mistake direction bank Another guide would put reflective tape wing leading edge really helps during approaches especially light gets bad twi light 4B2 now complete except final placement servos receiver everything model including pushrods foam attach wing check center gravity plenty room move servos receiver around put CG want final CG should slightly ahead point shown plans Never accept CG aft point satisfied epoxy servo mounts cut pushrods fit sembled rudder elevator should zero-zero position servos neutral model built straight center gravity right place going enjoy flying ginner going satisfied flying figure-eights very long will agree great flying model ball fly beginners too Additional Flying Notes After flying 4B2 six months decided see what pitfalls would encountered prospective builder decided install larger suggested engine installed 0 5 Max 20 muffler Tatone mount found three primary areas affected first area weight en gine receiver battery locations swapped keep recommended center gravity leaves servos vulnerable damage should aircraft crash second problem uncovered need set very low idle normal idle 20 enough cause 4B2 float considerable distance ground effect flown onto ground good trainer reliable idle must difficult get reliable idle slow enough land model normally last problem ele vator trim specd now attainable considerable down trim required worse trim changes required different power settings conclusion ex perienced RC pilot build 4B2 fun project critical problem areas can compensated piloting tech nique newcomer R/C fly ing overpower model flies beautifully recommended engines does need extra power 72 Model Aviation WWII SCALE AIRCRAFT PLANS -- I Send $100 caxalogue containing copy Supersuale drawing Superscale Box 201 Arlington Texas 76012
Edition: Model Aviation - 1975/11
Page Numbers: 26, 27, 28, 72
THE 4B2 Beginners Too de signed incorporate flying require ments basic trainer put reasonably sized package would pleasing look us fly unimproved fields easily hand-launched simple un usual modeler drawn model emotion reason personally know three newcomers radio-controlled flying built Kwik-Fly IIIs built Royal Phantom II because looked great left area before flown think can guess what happened trainer would have look good enough make flyer proud both air ground firmly lieve kind trainer will result faster learning novice pilot addition model would have ca pable advanced maneuvers soon flyer ready Beginners Too David E Pastor 4B2 designed larger usual frontal area Streamlined like brick might say reason fledgling flyer wouldnt suddenly find him self Mach-two dive let nose drop profile decided upon reminis cent some early monoplanes allowed large firewall integrated rest design design simple no carving except shaping wing leading edge headrest fairing simply 3/16 thick piece balsa looks good close-up provides some thing extra model profile wing has Clark Y airfoil simple build yet provides excellent lift Too beginners get tied down building first model could learning fly model can ready finishing very few hours An easy model build also easy model repair Also modelers shy away scratch-building because looks complicated design can carboned cut out assembled faster some models know can assembled kits model light allows use 10 15 engines inexpensive use little fuel side benefit small fuel tank quart fuel sufficient long day field Also bulb-type filler practical inexpen sive No small factor choice en gines much less formidable beginner think about cranking over small engine large light model 350 375 sq wing area will needed model could now kept small enough fit small cars completed model Cox 15 engine minus radio weighed 27 ounces roomy interior provided Most beginners start sport-type radio gear room standard servos primary importance Too beginners end up badly balanced model because lack interior space best com 26 Model Aviation Straight lines design easy build though design functional proportions yield pleasing look Light weight allows use fuel-saving 09 15 engines Color scheme Wing yellow fuselage dark gray stab red rudder red yellow striped Lettering fin yellow black wing Only carving required shaping wing leading edge Clevises horns pushrods tail show skeleton ready covering wing features old stand-by flat-bottomed Clark V airfoil photo Simple sheet headrest cinch build flat work bench Covering too snap spite its three-channel cut-off canopy add touch realism limitations 4B2 does slow axial rolls will fly inverted promise usually results have also found outside access large fuel tank battery compartment will result neater installation Well day came show 4B2 rest club day very windy crosswind new flying field has no provision cross wind run way hasnt seeded yet almost packed up go home pride design fact easy hand launch made stick out cranked up Cox per instructions says run very rich 60 seconds lean out fly Believe works little engine really cranks out power new After 60 seconds running still running little rich tached 12000 rpm vibra-tach using 8-4 prop After checking radio gave good trusted friend launch literally flew out hand maintained 600 climb altitude throt tled back trimmed started having ball no tendency pitch up rolled out turn yet will pull itself out dive very quickly very little trim change 1/3 full throttle idle little up trim needed hold easy glide stall gentle straight ahead will fly long after think should have stalled Landing another surprise lands slowly havent tipped onto prop yet rough ground flying site lands normally three-point attitude rolls few feet 4B2 ball fly An old expert 3-channel maneuvers impressed beautiful axial slow rolls showed him some inverted flying barrel rolls Slow speed maneuvering positive pushrods attached distances shown plans experi enced flyer little rudder can used sufficient elevator travel shown increasing travel should done very smooth sticks now just what intended design light easily-built basic trainer looks like mini-fighter fun fly both beginner sport flyer Cox 09 Max 10 have plenty power 3-channel flying yet 15 will make excellent fun air plane fly fields wouldnt dream taking highpowered sport pattern model Before starting build model select balsa fuselage sides carefully make building easier should equal stiffness wing leading edge should chosen straightness less warp built wing beginning less trouble will later balsa top hatch lower front fuselage should hard Contact cement used attaching doublers fast very strong Epoxy used formers Fl F2 F3 wing dihedral braces Titebond model ce ment used everything else fuselage can built lap neces 4B2 simple nice flying model As basic primary trainer fills gap between getting started full aerobatics sary wing will have pinned down during initial stages construc tion clear workbench might nickname design Rubber Band Special wing held down rubber bands landing gear held too reason simple Hard landings com mon occurrence novice pilot some us old timers arent too smooth either bands allow gear shift pop clear obstacle hit during land ing damaging model gear also easily removed cleaning re bendingturn page November1975 27 Rear-quarter view shoulder-wing configuration proves its acceptable appearancejust wee bit racy looking 15 will take off fields wouldnt dream taking some ships Control areas adequate experienced might like rudder AboveUnderview wing Spars webbed Out fourth ribribs cap-stripped Left Things fall place roomy fuselage Below Note neat hatch fit Trailing edge two sheets webs Beginners Too Fuselage Lay fuselage sides flat surface remember right left side attach doublers upper lower sq rear fuselage stringers Mark top centers Fl F2 F3 front top piece Epoxy F2 F3 place holding fuse lage sides together rear clothes pins sighting across centers F2 F3 rear assure correct align ment dry epoxy Fl place add 1/8 plywood piece bottom plywood piece supports landing gear will used reference alignment After have dried fuselage top can pinned place critical part fuselage assembly Make sure part cut out accu rately Pull rear fuselage gether hold clothespins piece 3/16 scrap between fuselage sides lay top place pin Sight front across center marks FL F2 F3 front top piece marks should line vertical stabilizer cutout straight Adjust top piece fuselage rear necessary aligned glue top F4 pin well top has dried add 1/8 sq cross pieces below Mount vertical stabilizer make sure vertical build ing board fuselage should resting 1/8 plywood landing gear support alignment references made necessary weigh down fuselage rests piece Glue vertical stabilizer F4 fuselage sides rear Place bead continued page 72 Three servos fit side side plenty space Tank too accessible Sheet metal gear old fashioned rubber strap-on type 1/ISP 16 v-IPER SR TA S I SI z 1651/a p 0CAPS _____1I1 ___ 1/15 ~EER-_____ 64.3/1EA1-7/8S-EPT ASR SA IIREOFIAI SOTh 565 TIPS -75 I-HI POIT 1/16 SPACER REDS RED DIR 115 CO1RRsC pO1p1/A RARDWDOD DOvELS S~4 D/5E - /V-- ZZ - IIjCZt---C NYLON __JHNGES FOR SlUR C 0 MDA/DOER 1/16OPPSET TO UP SIC SI TOR 50517555 182 555000Li 3/16 SlYEST DPI Li/A - P SGGESTEOOs/F I1R ENOT- QE 1/4 OS/PP OITLNE POEDRPOP SCRE OSMAR 10 -1DIALER SE DOMMERCIA ENGINE T/uRI-EP RAND EELS w- 213 1/8 P055009--WISO SPAN 46ASFA 360 WAENGINE 10-15RADIO /3CRANNEs DESIGNEDE DAREII HAROLD IDRAWN PASTOR j NEED RI/AR 28 Model Aviation U ISO CZ 551 p-rn zO Orn IDA Am DC S SO 5- Ax CA Al mA 0 0 GREAT XMAS GIFT ENAMELED TIE TACS$47b pp Beginners Too/Pastor continued page 28 glue comes out top fuselage Mount horizontal stabilizer making sure perpendicular vertical stabilizer parallel build ing board Plan pushrod layout fore adding bottom sheeting Remem ber balsa lower fuselage has grain running across fuselage Inexpen sive aluminum engine mounts will need ed Down-thrust has been- provided Use two washers under left-side mount screws right thrust offset mount slightly prop centered Temporarily mount engine trim front fuselage necessary prop clearance Remember use selflocking nuts hold mount fire wall use blind nuts since struc tural strength lost hatch simple Cut piece locate screws will go Drill out 1/4 glue piece 1/4 dowel dry drill 1/16 through center dowel Continue hole 1/8 ply cross pieces holding hatch place Remove hatch drill out 1/16 hole body clearance #3 #4 wood screw Glue bottom hatch supports finished hatch Complete sheeting sand four 1/4 dowels can installed now heat-shrink covering used add after covering Wing The wing straightforward Use straightest spruce spars can find Cut ribs once band saw jig saw using 4 wide 1/16 sheets can save sheet cutting top trailing edge strips inch wide sheeting top front wing cut 2-5/8 wide Make sure wing pinned down solidly during initial construction Use scrap 1/16 balsa shims under rib/spar joint under front first two ribs As wing half completed cap ribs cap first two ribs since center sheeting will cover build right wing plans left wing shown wipe 3-in-I oil plan lines will show through back can used right wing plan join wing halves place 1-7/8 shim under outboard rib half Cut sand smooth dihedral break use epoxy join leading edge spars trailing edge Next epoxy W3 place dry turn wing over epoxy WI W2 Cut center rib 1/8 thick piece fits between WI W2 other fits tween W3 trailing edge Glue pieces place Finally sheet center section top bottom Cut pieces / 16 plywood cover trailing edge sheeting wing center out second rib protection against rubber band nicks Place wing fuselage again using lower plywood landing gear sup port reference sand wing saddle necessary level wing Also make sure wing tip fuselage rear dis tance same both sides Sand completed wing Make sure balsa joints smooth Check wing time see warps steam out Finishing finishing method up however strongly recommend heat-shrink covering strong light weight easily applied used Mono kote fuselage easy cover sure cover bottom hatch will keep warping allowing fuel enter front compart- ment After fuselage has covered fuel-proof engine compartment dope epoxy line hatch opening wing saddle tape Attach miniature pilot choice epoxy silicon adhesive will assure dont end up him rattling around inside canopy canopy cut open rear simplicity placed model outline marked Monokote Re move 1/16 wide piece covering epoxy canopy fuselage top Use thin strip Monokote joint Half should sealed fuselage half canopy careful over heat canopy covering wing work side time Cover top bottom wing working center shrink rib width time both top bottom wing After wing has covered completely check warps can removed very easily twisting wing opposite direction reheating Monokote Let wing set about 24 hours recheck sarps attempt fly wing warp doesnt take much give same results fully deflected ailerons Check after large changes weather well expert flyer finds visible model easier fly Use bright colors wing tail Yellow excellent color bright day like having flashlights mounted wing bank model cant mistake direction bank Another guide would put reflective tape wing leading edge really helps during approaches especially light gets bad twi light 4B2 now complete except final placement servos receiver everything model including pushrods foam attach wing check center gravity plenty room move servos receiver around put CG want final CG should slightly ahead point shown plans Never accept CG aft point satisfied epoxy servo mounts cut pushrods fit sembled rudder elevator should zero-zero position servos neutral model built straight center gravity right place going enjoy flying ginner going satisfied flying figure-eights very long will agree great flying model ball fly beginners too Additional Flying Notes After flying 4B2 six months decided see what pitfalls would encountered prospective builder decided install larger suggested engine installed 0 5 Max 20 muffler Tatone mount found three primary areas affected first area weight en gine receiver battery locations swapped keep recommended center gravity leaves servos vulnerable damage should aircraft crash second problem uncovered need set very low idle normal idle 20 enough cause 4B2 float considerable distance ground effect flown onto ground good trainer reliable idle must difficult get reliable idle slow enough land model normally last problem ele vator trim specd now attainable considerable down trim required worse trim changes required different power settings conclusion ex perienced RC pilot build 4B2 fun project critical problem areas can compensated piloting tech nique newcomer R/C fly ing overpower model flies beautifully recommended engines does need extra power 72 Model Aviation WWII SCALE AIRCRAFT PLANS -- I Send $100 caxalogue containing copy Supersuale drawing Superscale Box 201 Arlington Texas 76012