Dee B Mathews THE DICTIONARY defines ambiva lence state having simultaneous conflicting attitudes feelings Truly us modelers ambivalent about concept radio-assisted free flight have negative feelings toward losing esthetic freedom models glide positive ones concerning obvious adAMBIVALENT radio-assisted Free Flight directed former Free Flight competition person mind has turned Old-Timers RC gliders just sport flying April 1976 23 Above The Ambivalent Buzzard Bombshell wing place picture bottom shows ship Mexi Boy wing beauties design wide latitude old free-flight wings tails will accept airplane confused Old Timerit modern design although along some Old Timer parameters designed climb high cut engine guided assisted can cut down retrieval inclined course can fly RC sport less power 1/16 PLYWOODL EI/2 SQLEBRACE III 1/16 X 1/4 SPRUCE OPTIONAL WEB SPARS TURBULATOR TILT RIB FOR1/16 PLYWOODI/16SHEET DIHEDRALDIHEDRAL BRACEGRAIN VERTICALSPRUCE SPAR TOP & BOTTOM BOTH PANELS FRONT B REAR NOTCH RIBSTE I/4XI FOR GUSSETTAPERED STOCK CLEARANCE -WING BUILDING SEQUENCE LAY DOWN LE TE BOTTOM SPAR B GUSSETS ASSEMBLE CHORDAL RIBS TRIM B FIT DIAGONAL RIBS ADD TOP SPAR 8 ASSEMBLE PANELS WITH DIHEDRAL AS SHOWN SELECT MOUNT TO SUITNOTCH RIBS & INSTALL TURBULATORS ENGINE USE PLYWOODADD TIPS B SHAPE LE B TIPS SPACERS TO POSITIONREINFORCE JOINT & EPOXY MOUNT TATONE 29/4 FOR________ ST 2935mr -___ __I]I ______ __ K11111 COWELDRILL B INSTALL 4-40 BLINDL N_______________ IItI SIG KADET NUTS BEFORE ASSEMBLY -PERFECT#6 TANK AS SHOWN I/ - j COWL OUTLINE -I 3/16 PLYWOOD[0 K CUT OUT FOR TIMER - -----__ ------42 SPINNER ORIGINAL POWERED BY ST 29 SECTION AT RECEIVER-SERVO STAB RIB CHORDAL 16 REQ C GRAIN I/ISEE -RIB -j 6 REQ 3/32SHEET n ----- CROSSGRAINJ BLOCKTHIS AREASHEET B WING B WINDSCREEN -__ CLARITY ACCESSFOR CLARITY OMITTED FOROPEN FORRAILS OMITTED U REA SEAT WILL ACCOMODATE II0R12 WINGWINDS FROMCUT F L E EDGE OF WING USED/BUTYF WITH REPIPE DIAGRAM FOR TIMERWITH PRUCE WING B LG DOWEL 3/16 DIA cT #6 TANK WING RAILS 1/8 X 1/ RUBBER NYROD STOPPERSNYROD PUSHRODS BLOCK 3/16 SHEET NO CROSS FILL/8 SHEETMEMBERS CROSSGRAIN 7 3/16PLYWOODTHIS AREASIDEPLACE BATTERY -PPOSITE EXHAUSTTO ADJUST C G ALL GUSSETS 1/16 PLYWOODIM PRODUCTS WORLD ENGINES 3/16 SHEET CROSSGRAIN TO H-3 READY TO USE L GC TRACE PARTS BUTYRATEATTACH TO K RIAL CUT OUT B PEELV16 PL _____OFF PATTERN RAILS 3/8SQ MAPLE 1/16 PLYWOODAMBIVAL 3-48SCREWS WHEELS 3 I/2DIADESIGNED S DRAWN 02346TRACED FOR MODEL AVIATI 24 Model Aviation CLOTH & E~2 JOINTSI N t1IIII RIBFORTIPS HEDRALIi 3/8OR 1/2 PANELSSHEET GUSSETS 3/16SHEET i -- - -- --- _____TFS 3/16 OR 1/43/16SHEET 1 j11 tiII 3/16XI/4 SPARS HARDKK K I/8X3/4 3/16SQ FRONT DIAGONAL RIB I8REQ 1/16 C GRAIN SHEET~ II TRIM TO FIT 1/16 C GRAIN -18 REQ7JjjFINMETALHANGER IRIB NO BIND JOINER ________@LARGE SIG - ELEVATOR IrL BOTTOM STAB RESTV6X 1A4X 31/2 __PLYWOODb1h/_ ATTERN 4---ii HEET- -- C GRAIN CK IN PLACE--- 3A6SQSHEET ER TO SHAPESPRUCE ___ [ TAPE & WARM MERS ia cZi 1/16 SHEET 3/16X 1/2 /IIIi SHEET FILL 3/16SQ SPRUCE ONE SIDE ONLY' X 3/16 /@---ff-ii-\ PUSHROD EXIT 3/16 SHEET NOTCH 3/16SQ SPRUCE STRINGERS 2 ROUNDADJUST SPACE TO FITTO MATCH STAB SPARS __CORNERS AFTER __-- ____ASSEMBLYT BOR 9 STAB HINGE LINEAT TAIL POSTCRAP FILLERI ---- II ---LARGE 16 3/161/16 SHEETRIG T SIDE NYROD SUPPORT--I CROSSGRV16 PLYWOOD I/B DOWELAIN EPOXY IN PLACE ALL FRAME PART 3/16TRIM TO MATCH AFTER COAT HANGER SQ SPRUCE LONGERONSPOSITIONING STAB S FIN WIRE SKID 3/16 REVERSE ON OPP SIDEREQ 48 STOCK OR SPLICEISTAB BBER PLYWOOD RADIO CONTROL ASSISTED FREE FLIGHT CENT DIHEDRAL BRACE1/16 PLYWOOD29-35 ENGINE 50 OZ WITH 2CH BRICK 800 SQ IN AS SHOWN MATHEWS REQ MANY FF WING DESIGNS MAY BE USED BORDEN1/16 PLY VOOL E DIHEDRAL BRACE April 1976 25 Ambivalent vantages small field use decom plication retrieving procedures remarkable upsurge interest RCOFF last two three years ripple surface muddled puddle future direction free flight slow flying structurally marginal senior citizens great fun simple fly often terribly difficult build None theless attracting more interest modelers seeking beauty free flight hassle stately old ladies grand mas future generation radioassisted free flight just non-radio controlled sisters gave birth current generation hot climbing free flight designs concept radio assisted free flight new Dick Mathis presented pio neering adaptation Hysteria-Ram bunctious series National Free Flight Society Symposium Chicago during 1972 Nationals presentation met little enthusiasm has indicated others confusion being almost laughed opinion Dick presented concept wrong people wrong time After reasonable contest-active free fighter satis fied hobby has adequate flying site enjoys retrieving direct article former free flight er has turned Old Timer RC Gliders sport flying guy has set wings stabilizer left over has thinking about RAFF assisted guy ambivalent about whole thing objective develop design envelope encompass easy construction use existing components available medium moderate performance profile last thing Id want present super critical airplane turn away anyone first try RAFF Ambivalent presented second generation development con cept have never flown RC please front end showing on-end mounting Perfect tank free-flight fashion shut-off timer switch Cowl covers tank its 29-35 power Ambivalent moves out rather rapidly tank run off would dis appear overhead Right Old-fashioned frame start model 15-19 tank mount better yet build Kloud King Model Aviation July 1975 Ambivalent stable glide moves out rather quickly under power therefore sure cranial computer can keep track right left coming going away Ambivalent has flown using wings Starduster 900 Witch Doctor 800 Buzzard Bombshell Mexi Boy Rambunc tious 747 Grabber 800 II chord x 72 span quick check will show almost 29-35 size free flight designs use II- 12-in chord will fit Ambivalent course brick battery pack location will vary order adjust CG servo rails deliberately long allow movement fore aft locate CG before mounting stabilizer shown photos old Rambunctious 747 sta bilizers contemporary B C jobs will work have wing sta bilizer plans show Grabber 800 wing rip off Mel Schmidts Shocer suitable stabilizer Construction Fuselage The fuselage will handled first extensively since key concept Trace cut out stick saw bulkheads 1/16 ply side pieces firewall 3/16 ply Drill holes mount blind nuts motor mount sides constructed 3/16 spruce directly over plan Build second side directly over first using Saran Wrap glue barrier areas may difficult separate table knife Dont forget gussets tail 26 Model Aviation .uw front boxy design lending note modern realism Cushionary air wheels let down easy Above assembly landing gear wires made clear shot attachment rubber bands wound around fuselage dowels band gusset placed match stabilizer size fill sheets allow PVC set least overnight before removing build ing board Editors Note PVC author means Poly Vinyl Chlorides yellow colored glues like Titebond Sig-Bond etc Separate halves gently popping apart table knife trim sand bulkheads BC D slip appropriate notches snugly glue position use epoxy Place fuselage wing rails down level building board using clothespins clamps adjust positions until box square dimensions check 900 triangles carpenters square Pin down building surface add 3/16 crosspieces bottom cover bottom 1/32 ply cross grained Now let everything set least 24 hours Mark midline onto bottom E place straight edge ruler yard stick etc line pull tail posts together centerline Cut mark cross pieces 3/16 X 3/16 spruce install top bottom using straight edge reference Allow PVC set 12 hours remove building sur face Fabricate tail skid clothes hanger wire trace tail outline onto scrap 3/32 ply cut out drill Epoxy wire ply ply tail Drill holes dowels dont cement permanently until cov ered Formers F through J cut out glued place dry add top stringers terminating scrap 3/16 balsa placed match stabilizer size nose block sanded match contour firewall Wing mount planking rails located allow access radio gear should placed until CG located Tray two servos rests hardwood rails run across fuselage cabin area Easily accessible open top Wing geodetic wing designed handle Monokote warping will find resistant torsion dimensions since mylar coverings add no torsional strength whatsoever power handling glide aspects best illustrated son Bruces Nationals second places C 1974 73 72 Construction straight forward using stock TE spruce spars both panels being exactly 36 in length Main ribs placed first cross ribs trimmed placed after main spars place three turbulator spars placed after dihedraling tips ends cut off after cement set blocked up angle sanded edge table epox ied place Center sections handled same manner slot dihedral gusset cut using two hacksaw blades taped together Gussets added tips glued carved shape leading edge carved turbulators glued entire frame work sanded weight added light tip until wing bal ances midline Cover Mono Solar-Kote Stabilizer First lets presume have old B-C size stabilizer merely need add elevator Use straight edge trim trailing edge 3/16 thickness glue tiller 3/16 X 3/16 hard balsa onto edge Cut elevator 3/16 sheet join clothes hanger wire con nector shown Cut hinge slots stabi lizer TE LE elevator airfoil shape sanding after hinge slots etc cut can working flat surface avoids misaligned slots Monokoted elevator covered filler strip stabilizer vinyl tape installed hinges tooth picks through holes may find necessary install second rib cen ter stabilizer create slot fin also sure stabilizer has enough center section till give good solid seat continued page 90 April 1976 27 against stabilizer mount Fin Rudder Couldnt figure out anything simpler rudder plenty large want person alize Ambivalent heres good spot just keep area about same Cover hinge install slot sta bilizer sub-rudder filler cut match outline rudder already mount ed stabilizer Assembly stabilizer should po sitioned fuselage hinge line clears tail post soft aluminum could tin strip wrapped around connector horn two 3/48 bolts sticking through keep stabilizer hold down bands binding elevator movement works shim drawn fuselage side should nor necessary Install large Sig nylon horns onto rudder elevator before strapping sembly onto fuselage Temporarily position fin-stabilizer onto fuselage run Nyrods through filler sheets rear holes bulkhead E connect horns Temporarily mount engine landing gear prop-spinner Determine CG moving brick battery fore aft mark epoxy cross pieces after remov FLIGHT LITE THE ON BOARD BATTERY MONITOR LIGHT THAT GOES OUT WHEN 10-20 MINUTES OF SAFE CHARGE REMAINS DOES NOT FADE OUT SNAPS IN HOLE DETECTS BAD CELLS PILOT LIGHT GUARANTEED SEE THE LIGHT CAN YOU AFFORO NOT TO ADVANCED DEVICES INC P0 800 iS SOCKVILLE MD 20850 SOIREES VIA 1ST CLASR MAIL Dnalere Invited PROTECT YOUR INVESTMENT WITH ODe NICAS Wieh ret Type ot Dune Cent 695 AS SHOWN 995 DELUXE neutral cowl cut clear engine adjusted closely approximate spin ner can held place screws running filler block top ply bottom threaded metal angles sides Cut windscreen pattern butyrate sheet hold place fuselage masking tape use hair dryer warm slightly will mold shape can also done Monokote iron dont touch mounted side windows before Monokoting tricky good neat installation Install wing mount sheeting rails recheck parts installed Remove dowels etc cover fuselage like vinyl trim tapes decoration let artistic talent dictate Ambivalent IS trimmed tank shown Perfect #6 repiped bring lines out easier accesses Tatone timer will run 19 seconds little Untimed tank will put model out sight Flying Initial flight should hand glides CG correctly located dive stall can corrected stabilizer shim gentle right glide circle can created stabilizer tilt rudder tab First powered flights connec tors outside holes horns large prop cool fuel over control power model set up will climb nicely much assistance Upon breaking ground about three feet little down elevator may needed absolutely no up turn Use short motor runs 3-5 sec onds until youre confident power pattern try straight away climb little right rudder motor dies avoid transition stall Once things going consistently go normal free-flight-size prop motor size heat up fuel set timer full run go hunt lift Ambivalent heavily loaded current compe tition machine 50 ounces opposed 3436 will thermal nicely penetrate wind back launch site easily Whether construct yours avail able remains build scratch Im sure after few solid thermal flights terminated feet will no longer ambivalent about RAFF would appreciate comments ex periences new experience Write dont call D B Mathews DDS 119 West Morton Greensburg Kan 67054 Club Newsletter/Hard continued page 46 announcements should printed least full month ahead such contests fun flys special events banquets can extra sheets used inserts newsletter As help getting newsletter ready mailing like stapling folding addressing postage mailing say 25 50 copies can yourself Fifty 100 copies help should arranged some can staple fold staple others can affix address labels stamps Maybe arrangements can made have members mail again credit can given print helping club newsletter very important item must appear newsletter name editor address city zip number other item phone number An other thing remember desire editorialize newsletter editors please keep mind give true facts fancy Never use newsletter attack members club others As editor can great help club acting Club Historian can assist Secretary too can Public Relations man club So good luck keep plugging way Newsletter Editor rough must have thick shell strong will plus dedication task 90 Model Aviation Ambivalent/Mathewsing brick After epoxy has set remount continued page 27brick trim adjust Nyrods give
Edition: Model Aviation - 1976/04
Page Numbers: 23, 24, 25, 26, 27, 90
Dee B Mathews THE DICTIONARY defines ambiva lence state having simultaneous conflicting attitudes feelings Truly us modelers ambivalent about concept radio-assisted free flight have negative feelings toward losing esthetic freedom models glide positive ones concerning obvious adAMBIVALENT radio-assisted Free Flight directed former Free Flight competition person mind has turned Old-Timers RC gliders just sport flying April 1976 23 Above The Ambivalent Buzzard Bombshell wing place picture bottom shows ship Mexi Boy wing beauties design wide latitude old free-flight wings tails will accept airplane confused Old Timerit modern design although along some Old Timer parameters designed climb high cut engine guided assisted can cut down retrieval inclined course can fly RC sport less power 1/16 PLYWOODL EI/2 SQLEBRACE III 1/16 X 1/4 SPRUCE OPTIONAL WEB SPARS TURBULATOR TILT RIB FOR1/16 PLYWOODI/16SHEET DIHEDRALDIHEDRAL BRACEGRAIN VERTICALSPRUCE SPAR TOP & BOTTOM BOTH PANELS FRONT B REAR NOTCH RIBSTE I/4XI FOR GUSSETTAPERED STOCK CLEARANCE -WING BUILDING SEQUENCE LAY DOWN LE TE BOTTOM SPAR B GUSSETS ASSEMBLE CHORDAL RIBS TRIM B FIT DIAGONAL RIBS ADD TOP SPAR 8 ASSEMBLE PANELS WITH DIHEDRAL AS SHOWN SELECT MOUNT TO SUITNOTCH RIBS & INSTALL TURBULATORS ENGINE USE PLYWOODADD TIPS B SHAPE LE B TIPS SPACERS TO POSITIONREINFORCE JOINT & EPOXY MOUNT TATONE 29/4 FOR________ ST 2935mr -___ __I]I ______ __ K11111 COWELDRILL B INSTALL 4-40 BLINDL N_______________ IItI SIG KADET NUTS BEFORE ASSEMBLY -PERFECT#6 TANK AS SHOWN I/ - j COWL OUTLINE -I 3/16 PLYWOOD[0 K CUT OUT FOR TIMER - -----__ ------42 SPINNER ORIGINAL POWERED BY ST 29 SECTION AT RECEIVER-SERVO STAB RIB CHORDAL 16 REQ C GRAIN I/ISEE -RIB -j 6 REQ 3/32SHEET n ----- CROSSGRAINJ BLOCKTHIS AREASHEET B WING B WINDSCREEN -__ CLARITY ACCESSFOR CLARITY OMITTED FOROPEN FORRAILS OMITTED U REA SEAT WILL ACCOMODATE II0R12 WINGWINDS FROMCUT F L E EDGE OF WING USED/BUTYF WITH REPIPE DIAGRAM FOR TIMERWITH PRUCE WING B LG DOWEL 3/16 DIA cT #6 TANK WING RAILS 1/8 X 1/ RUBBER NYROD STOPPERSNYROD PUSHRODS BLOCK 3/16 SHEET NO CROSS FILL/8 SHEETMEMBERS CROSSGRAIN 7 3/16PLYWOODTHIS AREASIDEPLACE BATTERY -PPOSITE EXHAUSTTO ADJUST C G ALL GUSSETS 1/16 PLYWOODIM PRODUCTS WORLD ENGINES 3/16 SHEET CROSSGRAIN TO H-3 READY TO USE L GC TRACE PARTS BUTYRATEATTACH TO K RIAL CUT OUT B PEELV16 PL _____OFF PATTERN RAILS 3/8SQ MAPLE 1/16 PLYWOODAMBIVAL 3-48SCREWS WHEELS 3 I/2DIADESIGNED S DRAWN 02346TRACED FOR MODEL AVIATI 24 Model Aviation CLOTH & E~2 JOINTSI N t1IIII RIBFORTIPS HEDRALIi 3/8OR 1/2 PANELSSHEET GUSSETS 3/16SHEET i -- - -- --- _____TFS 3/16 OR 1/43/16SHEET 1 j11 tiII 3/16XI/4 SPARS HARDKK K I/8X3/4 3/16SQ FRONT DIAGONAL RIB I8REQ 1/16 C GRAIN SHEET~ II TRIM TO FIT 1/16 C GRAIN -18 REQ7JjjFINMETALHANGER IRIB NO BIND JOINER ________@LARGE SIG - ELEVATOR IrL BOTTOM STAB RESTV6X 1A4X 31/2 __PLYWOODb1h/_ ATTERN 4---ii HEET- -- C GRAIN CK IN PLACE--- 3A6SQSHEET ER TO SHAPESPRUCE ___ [ TAPE & WARM MERS ia cZi 1/16 SHEET 3/16X 1/2 /IIIi SHEET FILL 3/16SQ SPRUCE ONE SIDE ONLY' X 3/16 /@---ff-ii-\ PUSHROD EXIT 3/16 SHEET NOTCH 3/16SQ SPRUCE STRINGERS 2 ROUNDADJUST SPACE TO FITTO MATCH STAB SPARS __CORNERS AFTER __-- ____ASSEMBLYT BOR 9 STAB HINGE LINEAT TAIL POSTCRAP FILLERI ---- II ---LARGE 16 3/161/16 SHEETRIG T SIDE NYROD SUPPORT--I CROSSGRV16 PLYWOOD I/B DOWELAIN EPOXY IN PLACE ALL FRAME PART 3/16TRIM TO MATCH AFTER COAT HANGER SQ SPRUCE LONGERONSPOSITIONING STAB S FIN WIRE SKID 3/16 REVERSE ON OPP SIDEREQ 48 STOCK OR SPLICEISTAB BBER PLYWOOD RADIO CONTROL ASSISTED FREE FLIGHT CENT DIHEDRAL BRACE1/16 PLYWOOD29-35 ENGINE 50 OZ WITH 2CH BRICK 800 SQ IN AS SHOWN MATHEWS REQ MANY FF WING DESIGNS MAY BE USED BORDEN1/16 PLY VOOL E DIHEDRAL BRACE April 1976 25 Ambivalent vantages small field use decom plication retrieving procedures remarkable upsurge interest RCOFF last two three years ripple surface muddled puddle future direction free flight slow flying structurally marginal senior citizens great fun simple fly often terribly difficult build None theless attracting more interest modelers seeking beauty free flight hassle stately old ladies grand mas future generation radioassisted free flight just non-radio controlled sisters gave birth current generation hot climbing free flight designs concept radio assisted free flight new Dick Mathis presented pio neering adaptation Hysteria-Ram bunctious series National Free Flight Society Symposium Chicago during 1972 Nationals presentation met little enthusiasm has indicated others confusion being almost laughed opinion Dick presented concept wrong people wrong time After reasonable contest-active free fighter satis fied hobby has adequate flying site enjoys retrieving direct article former free flight er has turned Old Timer RC Gliders sport flying guy has set wings stabilizer left over has thinking about RAFF assisted guy ambivalent about whole thing objective develop design envelope encompass easy construction use existing components available medium moderate performance profile last thing Id want present super critical airplane turn away anyone first try RAFF Ambivalent presented second generation development con cept have never flown RC please front end showing on-end mounting Perfect tank free-flight fashion shut-off timer switch Cowl covers tank its 29-35 power Ambivalent moves out rather rapidly tank run off would dis appear overhead Right Old-fashioned frame start model 15-19 tank mount better yet build Kloud King Model Aviation July 1975 Ambivalent stable glide moves out rather quickly under power therefore sure cranial computer can keep track right left coming going away Ambivalent has flown using wings Starduster 900 Witch Doctor 800 Buzzard Bombshell Mexi Boy Rambunc tious 747 Grabber 800 II chord x 72 span quick check will show almost 29-35 size free flight designs use II- 12-in chord will fit Ambivalent course brick battery pack location will vary order adjust CG servo rails deliberately long allow movement fore aft locate CG before mounting stabilizer shown photos old Rambunctious 747 sta bilizers contemporary B C jobs will work have wing sta bilizer plans show Grabber 800 wing rip off Mel Schmidts Shocer suitable stabilizer Construction Fuselage The fuselage will handled first extensively since key concept Trace cut out stick saw bulkheads 1/16 ply side pieces firewall 3/16 ply Drill holes mount blind nuts motor mount sides constructed 3/16 spruce directly over plan Build second side directly over first using Saran Wrap glue barrier areas may difficult separate table knife Dont forget gussets tail 26 Model Aviation .uw front boxy design lending note modern realism Cushionary air wheels let down easy Above assembly landing gear wires made clear shot attachment rubber bands wound around fuselage dowels band gusset placed match stabilizer size fill sheets allow PVC set least overnight before removing build ing board Editors Note PVC author means Poly Vinyl Chlorides yellow colored glues like Titebond Sig-Bond etc Separate halves gently popping apart table knife trim sand bulkheads BC D slip appropriate notches snugly glue position use epoxy Place fuselage wing rails down level building board using clothespins clamps adjust positions until box square dimensions check 900 triangles carpenters square Pin down building surface add 3/16 crosspieces bottom cover bottom 1/32 ply cross grained Now let everything set least 24 hours Mark midline onto bottom E place straight edge ruler yard stick etc line pull tail posts together centerline Cut mark cross pieces 3/16 X 3/16 spruce install top bottom using straight edge reference Allow PVC set 12 hours remove building sur face Fabricate tail skid clothes hanger wire trace tail outline onto scrap 3/32 ply cut out drill Epoxy wire ply ply tail Drill holes dowels dont cement permanently until cov ered Formers F through J cut out glued place dry add top stringers terminating scrap 3/16 balsa placed match stabilizer size nose block sanded match contour firewall Wing mount planking rails located allow access radio gear should placed until CG located Tray two servos rests hardwood rails run across fuselage cabin area Easily accessible open top Wing geodetic wing designed handle Monokote warping will find resistant torsion dimensions since mylar coverings add no torsional strength whatsoever power handling glide aspects best illustrated son Bruces Nationals second places C 1974 73 72 Construction straight forward using stock TE spruce spars both panels being exactly 36 in length Main ribs placed first cross ribs trimmed placed after main spars place three turbulator spars placed after dihedraling tips ends cut off after cement set blocked up angle sanded edge table epox ied place Center sections handled same manner slot dihedral gusset cut using two hacksaw blades taped together Gussets added tips glued carved shape leading edge carved turbulators glued entire frame work sanded weight added light tip until wing bal ances midline Cover Mono Solar-Kote Stabilizer First lets presume have old B-C size stabilizer merely need add elevator Use straight edge trim trailing edge 3/16 thickness glue tiller 3/16 X 3/16 hard balsa onto edge Cut elevator 3/16 sheet join clothes hanger wire con nector shown Cut hinge slots stabi lizer TE LE elevator airfoil shape sanding after hinge slots etc cut can working flat surface avoids misaligned slots Monokoted elevator covered filler strip stabilizer vinyl tape installed hinges tooth picks through holes may find necessary install second rib cen ter stabilizer create slot fin also sure stabilizer has enough center section till give good solid seat continued page 90 April 1976 27 against stabilizer mount Fin Rudder Couldnt figure out anything simpler rudder plenty large want person alize Ambivalent heres good spot just keep area about same Cover hinge install slot sta bilizer sub-rudder filler cut match outline rudder already mount ed stabilizer Assembly stabilizer should po sitioned fuselage hinge line clears tail post soft aluminum could tin strip wrapped around connector horn two 3/48 bolts sticking through keep stabilizer hold down bands binding elevator movement works shim drawn fuselage side should nor necessary Install large Sig nylon horns onto rudder elevator before strapping sembly onto fuselage Temporarily position fin-stabilizer onto fuselage run Nyrods through filler sheets rear holes bulkhead E connect horns Temporarily mount engine landing gear prop-spinner Determine CG moving brick battery fore aft mark epoxy cross pieces after remov FLIGHT LITE THE ON BOARD BATTERY MONITOR LIGHT THAT GOES OUT WHEN 10-20 MINUTES OF SAFE CHARGE REMAINS DOES NOT FADE OUT SNAPS IN HOLE DETECTS BAD CELLS PILOT LIGHT GUARANTEED SEE THE LIGHT CAN YOU AFFORO NOT TO ADVANCED DEVICES INC P0 800 iS SOCKVILLE MD 20850 SOIREES VIA 1ST CLASR MAIL Dnalere Invited PROTECT YOUR INVESTMENT WITH ODe NICAS Wieh ret Type ot Dune Cent 695 AS SHOWN 995 DELUXE neutral cowl cut clear engine adjusted closely approximate spin ner can held place screws running filler block top ply bottom threaded metal angles sides Cut windscreen pattern butyrate sheet hold place fuselage masking tape use hair dryer warm slightly will mold shape can also done Monokote iron dont touch mounted side windows before Monokoting tricky good neat installation Install wing mount sheeting rails recheck parts installed Remove dowels etc cover fuselage like vinyl trim tapes decoration let artistic talent dictate Ambivalent IS trimmed tank shown Perfect #6 repiped bring lines out easier accesses Tatone timer will run 19 seconds little Untimed tank will put model out sight Flying Initial flight should hand glides CG correctly located dive stall can corrected stabilizer shim gentle right glide circle can created stabilizer tilt rudder tab First powered flights connec tors outside holes horns large prop cool fuel over control power model set up will climb nicely much assistance Upon breaking ground about three feet little down elevator may needed absolutely no up turn Use short motor runs 3-5 sec onds until youre confident power pattern try straight away climb little right rudder motor dies avoid transition stall Once things going consistently go normal free-flight-size prop motor size heat up fuel set timer full run go hunt lift Ambivalent heavily loaded current compe tition machine 50 ounces opposed 3436 will thermal nicely penetrate wind back launch site easily Whether construct yours avail able remains build scratch Im sure after few solid thermal flights terminated feet will no longer ambivalent about RAFF would appreciate comments ex periences new experience Write dont call D B Mathews DDS 119 West Morton Greensburg Kan 67054 Club Newsletter/Hard continued page 46 announcements should printed least full month ahead such contests fun flys special events banquets can extra sheets used inserts newsletter As help getting newsletter ready mailing like stapling folding addressing postage mailing say 25 50 copies can yourself Fifty 100 copies help should arranged some can staple fold staple others can affix address labels stamps Maybe arrangements can made have members mail again credit can given print helping club newsletter very important item must appear newsletter name editor address city zip number other item phone number An other thing remember desire editorialize newsletter editors please keep mind give true facts fancy Never use newsletter attack members club others As editor can great help club acting Club Historian can assist Secretary too can Public Relations man club So good luck keep plugging way Newsletter Editor rough must have thick shell strong will plus dedication task 90 Model Aviation Ambivalent/Mathewsing brick After epoxy has set remount continued page 27brick trim adjust Nyrods give
Edition: Model Aviation - 1976/04
Page Numbers: 23, 24, 25, 26, 27, 90
Dee B Mathews THE DICTIONARY defines ambiva lence state having simultaneous conflicting attitudes feelings Truly us modelers ambivalent about concept radio-assisted free flight have negative feelings toward losing esthetic freedom models glide positive ones concerning obvious adAMBIVALENT radio-assisted Free Flight directed former Free Flight competition person mind has turned Old-Timers RC gliders just sport flying April 1976 23 Above The Ambivalent Buzzard Bombshell wing place picture bottom shows ship Mexi Boy wing beauties design wide latitude old free-flight wings tails will accept airplane confused Old Timerit modern design although along some Old Timer parameters designed climb high cut engine guided assisted can cut down retrieval inclined course can fly RC sport less power 1/16 PLYWOODL EI/2 SQLEBRACE III 1/16 X 1/4 SPRUCE OPTIONAL WEB SPARS TURBULATOR TILT RIB FOR1/16 PLYWOODI/16SHEET DIHEDRALDIHEDRAL BRACEGRAIN VERTICALSPRUCE SPAR TOP & BOTTOM BOTH PANELS FRONT B REAR NOTCH RIBSTE I/4XI FOR GUSSETTAPERED STOCK CLEARANCE -WING BUILDING SEQUENCE LAY DOWN LE TE BOTTOM SPAR B GUSSETS ASSEMBLE CHORDAL RIBS TRIM B FIT DIAGONAL RIBS ADD TOP SPAR 8 ASSEMBLE PANELS WITH DIHEDRAL AS SHOWN SELECT MOUNT TO SUITNOTCH RIBS & INSTALL TURBULATORS ENGINE USE PLYWOODADD TIPS B SHAPE LE B TIPS SPACERS TO POSITIONREINFORCE JOINT & EPOXY MOUNT TATONE 29/4 FOR________ ST 2935mr -___ __I]I ______ __ K11111 COWELDRILL B INSTALL 4-40 BLINDL N_______________ IItI SIG KADET NUTS BEFORE ASSEMBLY -PERFECT#6 TANK AS SHOWN I/ - j COWL OUTLINE -I 3/16 PLYWOOD[0 K CUT OUT FOR TIMER - -----__ ------42 SPINNER ORIGINAL POWERED BY ST 29 SECTION AT RECEIVER-SERVO STAB RIB CHORDAL 16 REQ C GRAIN I/ISEE -RIB -j 6 REQ 3/32SHEET n ----- CROSSGRAINJ BLOCKTHIS AREASHEET B WING B WINDSCREEN -__ CLARITY ACCESSFOR CLARITY OMITTED FOROPEN FORRAILS OMITTED U REA SEAT WILL ACCOMODATE II0R12 WINGWINDS FROMCUT F L E EDGE OF WING USED/BUTYF WITH REPIPE DIAGRAM FOR TIMERWITH PRUCE WING B LG DOWEL 3/16 DIA cT #6 TANK WING RAILS 1/8 X 1/ RUBBER NYROD STOPPERSNYROD PUSHRODS BLOCK 3/16 SHEET NO CROSS FILL/8 SHEETMEMBERS CROSSGRAIN 7 3/16PLYWOODTHIS AREASIDEPLACE BATTERY -PPOSITE EXHAUSTTO ADJUST C G ALL GUSSETS 1/16 PLYWOODIM PRODUCTS WORLD ENGINES 3/16 SHEET CROSSGRAIN TO H-3 READY TO USE L GC TRACE PARTS BUTYRATEATTACH TO K RIAL CUT OUT B PEELV16 PL _____OFF PATTERN RAILS 3/8SQ MAPLE 1/16 PLYWOODAMBIVAL 3-48SCREWS WHEELS 3 I/2DIADESIGNED S DRAWN 02346TRACED FOR MODEL AVIATI 24 Model Aviation CLOTH & E~2 JOINTSI N t1IIII RIBFORTIPS HEDRALIi 3/8OR 1/2 PANELSSHEET GUSSETS 3/16SHEET i -- - -- --- _____TFS 3/16 OR 1/43/16SHEET 1 j11 tiII 3/16XI/4 SPARS HARDKK K I/8X3/4 3/16SQ FRONT DIAGONAL RIB I8REQ 1/16 C GRAIN SHEET~ II TRIM TO FIT 1/16 C GRAIN -18 REQ7JjjFINMETALHANGER IRIB NO BIND JOINER ________@LARGE SIG - ELEVATOR IrL BOTTOM STAB RESTV6X 1A4X 31/2 __PLYWOODb1h/_ ATTERN 4---ii HEET- -- C GRAIN CK IN PLACE--- 3A6SQSHEET ER TO SHAPESPRUCE ___ [ TAPE & WARM MERS ia cZi 1/16 SHEET 3/16X 1/2 /IIIi SHEET FILL 3/16SQ SPRUCE ONE SIDE ONLY' X 3/16 /@---ff-ii-\ PUSHROD EXIT 3/16 SHEET NOTCH 3/16SQ SPRUCE STRINGERS 2 ROUNDADJUST SPACE TO FITTO MATCH STAB SPARS __CORNERS AFTER __-- ____ASSEMBLYT BOR 9 STAB HINGE LINEAT TAIL POSTCRAP FILLERI ---- II ---LARGE 16 3/161/16 SHEETRIG T SIDE NYROD SUPPORT--I CROSSGRV16 PLYWOOD I/B DOWELAIN EPOXY IN PLACE ALL FRAME PART 3/16TRIM TO MATCH AFTER COAT HANGER SQ SPRUCE LONGERONSPOSITIONING STAB S FIN WIRE SKID 3/16 REVERSE ON OPP SIDEREQ 48 STOCK OR SPLICEISTAB BBER PLYWOOD RADIO CONTROL ASSISTED FREE FLIGHT CENT DIHEDRAL BRACE1/16 PLYWOOD29-35 ENGINE 50 OZ WITH 2CH BRICK 800 SQ IN AS SHOWN MATHEWS REQ MANY FF WING DESIGNS MAY BE USED BORDEN1/16 PLY VOOL E DIHEDRAL BRACE April 1976 25 Ambivalent vantages small field use decom plication retrieving procedures remarkable upsurge interest RCOFF last two three years ripple surface muddled puddle future direction free flight slow flying structurally marginal senior citizens great fun simple fly often terribly difficult build None theless attracting more interest modelers seeking beauty free flight hassle stately old ladies grand mas future generation radioassisted free flight just non-radio controlled sisters gave birth current generation hot climbing free flight designs concept radio assisted free flight new Dick Mathis presented pio neering adaptation Hysteria-Ram bunctious series National Free Flight Society Symposium Chicago during 1972 Nationals presentation met little enthusiasm has indicated others confusion being almost laughed opinion Dick presented concept wrong people wrong time After reasonable contest-active free fighter satis fied hobby has adequate flying site enjoys retrieving direct article former free flight er has turned Old Timer RC Gliders sport flying guy has set wings stabilizer left over has thinking about RAFF assisted guy ambivalent about whole thing objective develop design envelope encompass easy construction use existing components available medium moderate performance profile last thing Id want present super critical airplane turn away anyone first try RAFF Ambivalent presented second generation development con cept have never flown RC please front end showing on-end mounting Perfect tank free-flight fashion shut-off timer switch Cowl covers tank its 29-35 power Ambivalent moves out rather rapidly tank run off would dis appear overhead Right Old-fashioned frame start model 15-19 tank mount better yet build Kloud King Model Aviation July 1975 Ambivalent stable glide moves out rather quickly under power therefore sure cranial computer can keep track right left coming going away Ambivalent has flown using wings Starduster 900 Witch Doctor 800 Buzzard Bombshell Mexi Boy Rambunc tious 747 Grabber 800 II chord x 72 span quick check will show almost 29-35 size free flight designs use II- 12-in chord will fit Ambivalent course brick battery pack location will vary order adjust CG servo rails deliberately long allow movement fore aft locate CG before mounting stabilizer shown photos old Rambunctious 747 sta bilizers contemporary B C jobs will work have wing sta bilizer plans show Grabber 800 wing rip off Mel Schmidts Shocer suitable stabilizer Construction Fuselage The fuselage will handled first extensively since key concept Trace cut out stick saw bulkheads 1/16 ply side pieces firewall 3/16 ply Drill holes mount blind nuts motor mount sides constructed 3/16 spruce directly over plan Build second side directly over first using Saran Wrap glue barrier areas may difficult separate table knife Dont forget gussets tail 26 Model Aviation .uw front boxy design lending note modern realism Cushionary air wheels let down easy Above assembly landing gear wires made clear shot attachment rubber bands wound around fuselage dowels band gusset placed match stabilizer size fill sheets allow PVC set least overnight before removing build ing board Editors Note PVC author means Poly Vinyl Chlorides yellow colored glues like Titebond Sig-Bond etc Separate halves gently popping apart table knife trim sand bulkheads BC D slip appropriate notches snugly glue position use epoxy Place fuselage wing rails down level building board using clothespins clamps adjust positions until box square dimensions check 900 triangles carpenters square Pin down building surface add 3/16 crosspieces bottom cover bottom 1/32 ply cross grained Now let everything set least 24 hours Mark midline onto bottom E place straight edge ruler yard stick etc line pull tail posts together centerline Cut mark cross pieces 3/16 X 3/16 spruce install top bottom using straight edge reference Allow PVC set 12 hours remove building sur face Fabricate tail skid clothes hanger wire trace tail outline onto scrap 3/32 ply cut out drill Epoxy wire ply ply tail Drill holes dowels dont cement permanently until cov ered Formers F through J cut out glued place dry add top stringers terminating scrap 3/16 balsa placed match stabilizer size nose block sanded match contour firewall Wing mount planking rails located allow access radio gear should placed until CG located Tray two servos rests hardwood rails run across fuselage cabin area Easily accessible open top Wing geodetic wing designed handle Monokote warping will find resistant torsion dimensions since mylar coverings add no torsional strength whatsoever power handling glide aspects best illustrated son Bruces Nationals second places C 1974 73 72 Construction straight forward using stock TE spruce spars both panels being exactly 36 in length Main ribs placed first cross ribs trimmed placed after main spars place three turbulator spars placed after dihedraling tips ends cut off after cement set blocked up angle sanded edge table epox ied place Center sections handled same manner slot dihedral gusset cut using two hacksaw blades taped together Gussets added tips glued carved shape leading edge carved turbulators glued entire frame work sanded weight added light tip until wing bal ances midline Cover Mono Solar-Kote Stabilizer First lets presume have old B-C size stabilizer merely need add elevator Use straight edge trim trailing edge 3/16 thickness glue tiller 3/16 X 3/16 hard balsa onto edge Cut elevator 3/16 sheet join clothes hanger wire con nector shown Cut hinge slots stabi lizer TE LE elevator airfoil shape sanding after hinge slots etc cut can working flat surface avoids misaligned slots Monokoted elevator covered filler strip stabilizer vinyl tape installed hinges tooth picks through holes may find necessary install second rib cen ter stabilizer create slot fin also sure stabilizer has enough center section till give good solid seat continued page 90 April 1976 27 against stabilizer mount Fin Rudder Couldnt figure out anything simpler rudder plenty large want person alize Ambivalent heres good spot just keep area about same Cover hinge install slot sta bilizer sub-rudder filler cut match outline rudder already mount ed stabilizer Assembly stabilizer should po sitioned fuselage hinge line clears tail post soft aluminum could tin strip wrapped around connector horn two 3/48 bolts sticking through keep stabilizer hold down bands binding elevator movement works shim drawn fuselage side should nor necessary Install large Sig nylon horns onto rudder elevator before strapping sembly onto fuselage Temporarily position fin-stabilizer onto fuselage run Nyrods through filler sheets rear holes bulkhead E connect horns Temporarily mount engine landing gear prop-spinner Determine CG moving brick battery fore aft mark epoxy cross pieces after remov FLIGHT LITE THE ON BOARD BATTERY MONITOR LIGHT THAT GOES OUT WHEN 10-20 MINUTES OF SAFE CHARGE REMAINS DOES NOT FADE OUT SNAPS IN HOLE DETECTS BAD CELLS PILOT LIGHT GUARANTEED SEE THE LIGHT CAN YOU AFFORO NOT TO ADVANCED DEVICES INC P0 800 iS SOCKVILLE MD 20850 SOIREES VIA 1ST CLASR MAIL Dnalere Invited PROTECT YOUR INVESTMENT WITH ODe NICAS Wieh ret Type ot Dune Cent 695 AS SHOWN 995 DELUXE neutral cowl cut clear engine adjusted closely approximate spin ner can held place screws running filler block top ply bottom threaded metal angles sides Cut windscreen pattern butyrate sheet hold place fuselage masking tape use hair dryer warm slightly will mold shape can also done Monokote iron dont touch mounted side windows before Monokoting tricky good neat installation Install wing mount sheeting rails recheck parts installed Remove dowels etc cover fuselage like vinyl trim tapes decoration let artistic talent dictate Ambivalent IS trimmed tank shown Perfect #6 repiped bring lines out easier accesses Tatone timer will run 19 seconds little Untimed tank will put model out sight Flying Initial flight should hand glides CG correctly located dive stall can corrected stabilizer shim gentle right glide circle can created stabilizer tilt rudder tab First powered flights connec tors outside holes horns large prop cool fuel over control power model set up will climb nicely much assistance Upon breaking ground about three feet little down elevator may needed absolutely no up turn Use short motor runs 3-5 sec onds until youre confident power pattern try straight away climb little right rudder motor dies avoid transition stall Once things going consistently go normal free-flight-size prop motor size heat up fuel set timer full run go hunt lift Ambivalent heavily loaded current compe tition machine 50 ounces opposed 3436 will thermal nicely penetrate wind back launch site easily Whether construct yours avail able remains build scratch Im sure after few solid thermal flights terminated feet will no longer ambivalent about RAFF would appreciate comments ex periences new experience Write dont call D B Mathews DDS 119 West Morton Greensburg Kan 67054 Club Newsletter/Hard continued page 46 announcements should printed least full month ahead such contests fun flys special events banquets can extra sheets used inserts newsletter As help getting newsletter ready mailing like stapling folding addressing postage mailing say 25 50 copies can yourself Fifty 100 copies help should arranged some can staple fold staple others can affix address labels stamps Maybe arrangements can made have members mail again credit can given print helping club newsletter very important item must appear newsletter name editor address city zip number other item phone number An other thing remember desire editorialize newsletter editors please keep mind give true facts fancy Never use newsletter attack members club others As editor can great help club acting Club Historian can assist Secretary too can Public Relations man club So good luck keep plugging way Newsletter Editor rough must have thick shell strong will plus dedication task 90 Model Aviation Ambivalent/Mathewsing brick After epoxy has set remount continued page 27brick trim adjust Nyrods give
Edition: Model Aviation - 1976/04
Page Numbers: 23, 24, 25, 26, 27, 90
Dee B Mathews THE DICTIONARY defines ambiva lence state having simultaneous conflicting attitudes feelings Truly us modelers ambivalent about concept radio-assisted free flight have negative feelings toward losing esthetic freedom models glide positive ones concerning obvious adAMBIVALENT radio-assisted Free Flight directed former Free Flight competition person mind has turned Old-Timers RC gliders just sport flying April 1976 23 Above The Ambivalent Buzzard Bombshell wing place picture bottom shows ship Mexi Boy wing beauties design wide latitude old free-flight wings tails will accept airplane confused Old Timerit modern design although along some Old Timer parameters designed climb high cut engine guided assisted can cut down retrieval inclined course can fly RC sport less power 1/16 PLYWOODL EI/2 SQLEBRACE III 1/16 X 1/4 SPRUCE OPTIONAL WEB SPARS TURBULATOR TILT RIB FOR1/16 PLYWOODI/16SHEET DIHEDRALDIHEDRAL BRACEGRAIN VERTICALSPRUCE SPAR TOP & BOTTOM BOTH PANELS FRONT B REAR NOTCH RIBSTE I/4XI FOR GUSSETTAPERED STOCK CLEARANCE -WING BUILDING SEQUENCE LAY DOWN LE TE BOTTOM SPAR B GUSSETS ASSEMBLE CHORDAL RIBS TRIM B FIT DIAGONAL RIBS ADD TOP SPAR 8 ASSEMBLE PANELS WITH DIHEDRAL AS SHOWN SELECT MOUNT TO SUITNOTCH RIBS & INSTALL TURBULATORS ENGINE USE PLYWOODADD TIPS B SHAPE LE B TIPS SPACERS TO POSITIONREINFORCE JOINT & EPOXY MOUNT TATONE 29/4 FOR________ ST 2935mr -___ __I]I ______ __ K11111 COWELDRILL B INSTALL 4-40 BLINDL N_______________ IItI SIG KADET NUTS BEFORE ASSEMBLY -PERFECT#6 TANK AS SHOWN I/ - j COWL OUTLINE -I 3/16 PLYWOOD[0 K CUT OUT FOR TIMER - -----__ ------42 SPINNER ORIGINAL POWERED BY ST 29 SECTION AT RECEIVER-SERVO STAB RIB CHORDAL 16 REQ C GRAIN I/ISEE -RIB -j 6 REQ 3/32SHEET n ----- CROSSGRAINJ BLOCKTHIS AREASHEET B WING B WINDSCREEN -__ CLARITY ACCESSFOR CLARITY OMITTED FOROPEN FORRAILS OMITTED U REA SEAT WILL ACCOMODATE II0R12 WINGWINDS FROMCUT F L E EDGE OF WING USED/BUTYF WITH REPIPE DIAGRAM FOR TIMERWITH PRUCE WING B LG DOWEL 3/16 DIA cT #6 TANK WING RAILS 1/8 X 1/ RUBBER NYROD STOPPERSNYROD PUSHRODS BLOCK 3/16 SHEET NO CROSS FILL/8 SHEETMEMBERS CROSSGRAIN 7 3/16PLYWOODTHIS AREASIDEPLACE BATTERY -PPOSITE EXHAUSTTO ADJUST C G ALL GUSSETS 1/16 PLYWOODIM PRODUCTS WORLD ENGINES 3/16 SHEET CROSSGRAIN TO H-3 READY TO USE L GC TRACE PARTS BUTYRATEATTACH TO K RIAL CUT OUT B PEELV16 PL _____OFF PATTERN RAILS 3/8SQ MAPLE 1/16 PLYWOODAMBIVAL 3-48SCREWS WHEELS 3 I/2DIADESIGNED S DRAWN 02346TRACED FOR MODEL AVIATI 24 Model Aviation CLOTH & E~2 JOINTSI N t1IIII RIBFORTIPS HEDRALIi 3/8OR 1/2 PANELSSHEET GUSSETS 3/16SHEET i -- - -- --- _____TFS 3/16 OR 1/43/16SHEET 1 j11 tiII 3/16XI/4 SPARS HARDKK K I/8X3/4 3/16SQ FRONT DIAGONAL RIB I8REQ 1/16 C GRAIN SHEET~ II TRIM TO FIT 1/16 C GRAIN -18 REQ7JjjFINMETALHANGER IRIB NO BIND JOINER ________@LARGE SIG - ELEVATOR IrL BOTTOM STAB RESTV6X 1A4X 31/2 __PLYWOODb1h/_ ATTERN 4---ii HEET- -- C GRAIN CK IN PLACE--- 3A6SQSHEET ER TO SHAPESPRUCE ___ [ TAPE & WARM MERS ia cZi 1/16 SHEET 3/16X 1/2 /IIIi SHEET FILL 3/16SQ SPRUCE ONE SIDE ONLY' X 3/16 /@---ff-ii-\ PUSHROD EXIT 3/16 SHEET NOTCH 3/16SQ SPRUCE STRINGERS 2 ROUNDADJUST SPACE TO FITTO MATCH STAB SPARS __CORNERS AFTER __-- ____ASSEMBLYT BOR 9 STAB HINGE LINEAT TAIL POSTCRAP FILLERI ---- II ---LARGE 16 3/161/16 SHEETRIG T SIDE NYROD SUPPORT--I CROSSGRV16 PLYWOOD I/B DOWELAIN EPOXY IN PLACE ALL FRAME PART 3/16TRIM TO MATCH AFTER COAT HANGER SQ SPRUCE LONGERONSPOSITIONING STAB S FIN WIRE SKID 3/16 REVERSE ON OPP SIDEREQ 48 STOCK OR SPLICEISTAB BBER PLYWOOD RADIO CONTROL ASSISTED FREE FLIGHT CENT DIHEDRAL BRACE1/16 PLYWOOD29-35 ENGINE 50 OZ WITH 2CH BRICK 800 SQ IN AS SHOWN MATHEWS REQ MANY FF WING DESIGNS MAY BE USED BORDEN1/16 PLY VOOL E DIHEDRAL BRACE April 1976 25 Ambivalent vantages small field use decom plication retrieving procedures remarkable upsurge interest RCOFF last two three years ripple surface muddled puddle future direction free flight slow flying structurally marginal senior citizens great fun simple fly often terribly difficult build None theless attracting more interest modelers seeking beauty free flight hassle stately old ladies grand mas future generation radioassisted free flight just non-radio controlled sisters gave birth current generation hot climbing free flight designs concept radio assisted free flight new Dick Mathis presented pio neering adaptation Hysteria-Ram bunctious series National Free Flight Society Symposium Chicago during 1972 Nationals presentation met little enthusiasm has indicated others confusion being almost laughed opinion Dick presented concept wrong people wrong time After reasonable contest-active free fighter satis fied hobby has adequate flying site enjoys retrieving direct article former free flight er has turned Old Timer RC Gliders sport flying guy has set wings stabilizer left over has thinking about RAFF assisted guy ambivalent about whole thing objective develop design envelope encompass easy construction use existing components available medium moderate performance profile last thing Id want present super critical airplane turn away anyone first try RAFF Ambivalent presented second generation development con cept have never flown RC please front end showing on-end mounting Perfect tank free-flight fashion shut-off timer switch Cowl covers tank its 29-35 power Ambivalent moves out rather rapidly tank run off would dis appear overhead Right Old-fashioned frame start model 15-19 tank mount better yet build Kloud King Model Aviation July 1975 Ambivalent stable glide moves out rather quickly under power therefore sure cranial computer can keep track right left coming going away Ambivalent has flown using wings Starduster 900 Witch Doctor 800 Buzzard Bombshell Mexi Boy Rambunc tious 747 Grabber 800 II chord x 72 span quick check will show almost 29-35 size free flight designs use II- 12-in chord will fit Ambivalent course brick battery pack location will vary order adjust CG servo rails deliberately long allow movement fore aft locate CG before mounting stabilizer shown photos old Rambunctious 747 sta bilizers contemporary B C jobs will work have wing sta bilizer plans show Grabber 800 wing rip off Mel Schmidts Shocer suitable stabilizer Construction Fuselage The fuselage will handled first extensively since key concept Trace cut out stick saw bulkheads 1/16 ply side pieces firewall 3/16 ply Drill holes mount blind nuts motor mount sides constructed 3/16 spruce directly over plan Build second side directly over first using Saran Wrap glue barrier areas may difficult separate table knife Dont forget gussets tail 26 Model Aviation .uw front boxy design lending note modern realism Cushionary air wheels let down easy Above assembly landing gear wires made clear shot attachment rubber bands wound around fuselage dowels band gusset placed match stabilizer size fill sheets allow PVC set least overnight before removing build ing board Editors Note PVC author means Poly Vinyl Chlorides yellow colored glues like Titebond Sig-Bond etc Separate halves gently popping apart table knife trim sand bulkheads BC D slip appropriate notches snugly glue position use epoxy Place fuselage wing rails down level building board using clothespins clamps adjust positions until box square dimensions check 900 triangles carpenters square Pin down building surface add 3/16 crosspieces bottom cover bottom 1/32 ply cross grained Now let everything set least 24 hours Mark midline onto bottom E place straight edge ruler yard stick etc line pull tail posts together centerline Cut mark cross pieces 3/16 X 3/16 spruce install top bottom using straight edge reference Allow PVC set 12 hours remove building sur face Fabricate tail skid clothes hanger wire trace tail outline onto scrap 3/32 ply cut out drill Epoxy wire ply ply tail Drill holes dowels dont cement permanently until cov ered Formers F through J cut out glued place dry add top stringers terminating scrap 3/16 balsa placed match stabilizer size nose block sanded match contour firewall Wing mount planking rails located allow access radio gear should placed until CG located Tray two servos rests hardwood rails run across fuselage cabin area Easily accessible open top Wing geodetic wing designed handle Monokote warping will find resistant torsion dimensions since mylar coverings add no torsional strength whatsoever power handling glide aspects best illustrated son Bruces Nationals second places C 1974 73 72 Construction straight forward using stock TE spruce spars both panels being exactly 36 in length Main ribs placed first cross ribs trimmed placed after main spars place three turbulator spars placed after dihedraling tips ends cut off after cement set blocked up angle sanded edge table epox ied place Center sections handled same manner slot dihedral gusset cut using two hacksaw blades taped together Gussets added tips glued carved shape leading edge carved turbulators glued entire frame work sanded weight added light tip until wing bal ances midline Cover Mono Solar-Kote Stabilizer First lets presume have old B-C size stabilizer merely need add elevator Use straight edge trim trailing edge 3/16 thickness glue tiller 3/16 X 3/16 hard balsa onto edge Cut elevator 3/16 sheet join clothes hanger wire con nector shown Cut hinge slots stabi lizer TE LE elevator airfoil shape sanding after hinge slots etc cut can working flat surface avoids misaligned slots Monokoted elevator covered filler strip stabilizer vinyl tape installed hinges tooth picks through holes may find necessary install second rib cen ter stabilizer create slot fin also sure stabilizer has enough center section till give good solid seat continued page 90 April 1976 27 against stabilizer mount Fin Rudder Couldnt figure out anything simpler rudder plenty large want person alize Ambivalent heres good spot just keep area about same Cover hinge install slot sta bilizer sub-rudder filler cut match outline rudder already mount ed stabilizer Assembly stabilizer should po sitioned fuselage hinge line clears tail post soft aluminum could tin strip wrapped around connector horn two 3/48 bolts sticking through keep stabilizer hold down bands binding elevator movement works shim drawn fuselage side should nor necessary Install large Sig nylon horns onto rudder elevator before strapping sembly onto fuselage Temporarily position fin-stabilizer onto fuselage run Nyrods through filler sheets rear holes bulkhead E connect horns Temporarily mount engine landing gear prop-spinner Determine CG moving brick battery fore aft mark epoxy cross pieces after remov FLIGHT LITE THE ON BOARD BATTERY MONITOR LIGHT THAT GOES OUT WHEN 10-20 MINUTES OF SAFE CHARGE REMAINS DOES NOT FADE OUT SNAPS IN HOLE DETECTS BAD CELLS PILOT LIGHT GUARANTEED SEE THE LIGHT CAN YOU AFFORO NOT TO ADVANCED DEVICES INC P0 800 iS SOCKVILLE MD 20850 SOIREES VIA 1ST CLASR MAIL Dnalere Invited PROTECT YOUR INVESTMENT WITH ODe NICAS Wieh ret Type ot Dune Cent 695 AS SHOWN 995 DELUXE neutral cowl cut clear engine adjusted closely approximate spin ner can held place screws running filler block top ply bottom threaded metal angles sides Cut windscreen pattern butyrate sheet hold place fuselage masking tape use hair dryer warm slightly will mold shape can also done Monokote iron dont touch mounted side windows before Monokoting tricky good neat installation Install wing mount sheeting rails recheck parts installed Remove dowels etc cover fuselage like vinyl trim tapes decoration let artistic talent dictate Ambivalent IS trimmed tank shown Perfect #6 repiped bring lines out easier accesses Tatone timer will run 19 seconds little Untimed tank will put model out sight Flying Initial flight should hand glides CG correctly located dive stall can corrected stabilizer shim gentle right glide circle can created stabilizer tilt rudder tab First powered flights connec tors outside holes horns large prop cool fuel over control power model set up will climb nicely much assistance Upon breaking ground about three feet little down elevator may needed absolutely no up turn Use short motor runs 3-5 sec onds until youre confident power pattern try straight away climb little right rudder motor dies avoid transition stall Once things going consistently go normal free-flight-size prop motor size heat up fuel set timer full run go hunt lift Ambivalent heavily loaded current compe tition machine 50 ounces opposed 3436 will thermal nicely penetrate wind back launch site easily Whether construct yours avail able remains build scratch Im sure after few solid thermal flights terminated feet will no longer ambivalent about RAFF would appreciate comments ex periences new experience Write dont call D B Mathews DDS 119 West Morton Greensburg Kan 67054 Club Newsletter/Hard continued page 46 announcements should printed least full month ahead such contests fun flys special events banquets can extra sheets used inserts newsletter As help getting newsletter ready mailing like stapling folding addressing postage mailing say 25 50 copies can yourself Fifty 100 copies help should arranged some can staple fold staple others can affix address labels stamps Maybe arrangements can made have members mail again credit can given print helping club newsletter very important item must appear newsletter name editor address city zip number other item phone number An other thing remember desire editorialize newsletter editors please keep mind give true facts fancy Never use newsletter attack members club others As editor can great help club acting Club Historian can assist Secretary too can Public Relations man club So good luck keep plugging way Newsletter Editor rough must have thick shell strong will plus dedication task 90 Model Aviation Ambivalent/Mathewsing brick After epoxy has set remount continued page 27brick trim adjust Nyrods give
Edition: Model Aviation - 1976/04
Page Numbers: 23, 24, 25, 26, 27, 90
Dee B Mathews THE DICTIONARY defines ambiva lence state having simultaneous conflicting attitudes feelings Truly us modelers ambivalent about concept radio-assisted free flight have negative feelings toward losing esthetic freedom models glide positive ones concerning obvious adAMBIVALENT radio-assisted Free Flight directed former Free Flight competition person mind has turned Old-Timers RC gliders just sport flying April 1976 23 Above The Ambivalent Buzzard Bombshell wing place picture bottom shows ship Mexi Boy wing beauties design wide latitude old free-flight wings tails will accept airplane confused Old Timerit modern design although along some Old Timer parameters designed climb high cut engine guided assisted can cut down retrieval inclined course can fly RC sport less power 1/16 PLYWOODL EI/2 SQLEBRACE III 1/16 X 1/4 SPRUCE OPTIONAL WEB SPARS TURBULATOR TILT RIB FOR1/16 PLYWOODI/16SHEET DIHEDRALDIHEDRAL BRACEGRAIN VERTICALSPRUCE SPAR TOP & BOTTOM BOTH PANELS FRONT B REAR NOTCH RIBSTE I/4XI FOR GUSSETTAPERED STOCK CLEARANCE -WING BUILDING SEQUENCE LAY DOWN LE TE BOTTOM SPAR B GUSSETS ASSEMBLE CHORDAL RIBS TRIM B FIT DIAGONAL RIBS ADD TOP SPAR 8 ASSEMBLE PANELS WITH DIHEDRAL AS SHOWN SELECT MOUNT TO SUITNOTCH RIBS & INSTALL TURBULATORS ENGINE USE PLYWOODADD TIPS B SHAPE LE B TIPS SPACERS TO POSITIONREINFORCE JOINT & EPOXY MOUNT TATONE 29/4 FOR________ ST 2935mr -___ __I]I ______ __ K11111 COWELDRILL B INSTALL 4-40 BLINDL N_______________ IItI SIG KADET NUTS BEFORE ASSEMBLY -PERFECT#6 TANK AS SHOWN I/ - j COWL OUTLINE -I 3/16 PLYWOOD[0 K CUT OUT FOR TIMER - -----__ ------42 SPINNER ORIGINAL POWERED BY ST 29 SECTION AT RECEIVER-SERVO STAB RIB CHORDAL 16 REQ C GRAIN I/ISEE -RIB -j 6 REQ 3/32SHEET n ----- CROSSGRAINJ BLOCKTHIS AREASHEET B WING B WINDSCREEN -__ CLARITY ACCESSFOR CLARITY OMITTED FOROPEN FORRAILS OMITTED U REA SEAT WILL ACCOMODATE II0R12 WINGWINDS FROMCUT F L E EDGE OF WING USED/BUTYF WITH REPIPE DIAGRAM FOR TIMERWITH PRUCE WING B LG DOWEL 3/16 DIA cT #6 TANK WING RAILS 1/8 X 1/ RUBBER NYROD STOPPERSNYROD PUSHRODS BLOCK 3/16 SHEET NO CROSS FILL/8 SHEETMEMBERS CROSSGRAIN 7 3/16PLYWOODTHIS AREASIDEPLACE BATTERY -PPOSITE EXHAUSTTO ADJUST C G ALL GUSSETS 1/16 PLYWOODIM PRODUCTS WORLD ENGINES 3/16 SHEET CROSSGRAIN TO H-3 READY TO USE L GC TRACE PARTS BUTYRATEATTACH TO K RIAL CUT OUT B PEELV16 PL _____OFF PATTERN RAILS 3/8SQ MAPLE 1/16 PLYWOODAMBIVAL 3-48SCREWS WHEELS 3 I/2DIADESIGNED S DRAWN 02346TRACED FOR MODEL AVIATI 24 Model Aviation CLOTH & E~2 JOINTSI N t1IIII RIBFORTIPS HEDRALIi 3/8OR 1/2 PANELSSHEET GUSSETS 3/16SHEET i -- - -- --- _____TFS 3/16 OR 1/43/16SHEET 1 j11 tiII 3/16XI/4 SPARS HARDKK K I/8X3/4 3/16SQ FRONT DIAGONAL RIB I8REQ 1/16 C GRAIN SHEET~ II TRIM TO FIT 1/16 C GRAIN -18 REQ7JjjFINMETALHANGER IRIB NO BIND JOINER ________@LARGE SIG - ELEVATOR IrL BOTTOM STAB RESTV6X 1A4X 31/2 __PLYWOODb1h/_ ATTERN 4---ii HEET- -- C GRAIN CK IN PLACE--- 3A6SQSHEET ER TO SHAPESPRUCE ___ [ TAPE & WARM MERS ia cZi 1/16 SHEET 3/16X 1/2 /IIIi SHEET FILL 3/16SQ SPRUCE ONE SIDE ONLY' X 3/16 /@---ff-ii-\ PUSHROD EXIT 3/16 SHEET NOTCH 3/16SQ SPRUCE STRINGERS 2 ROUNDADJUST SPACE TO FITTO MATCH STAB SPARS __CORNERS AFTER __-- ____ASSEMBLYT BOR 9 STAB HINGE LINEAT TAIL POSTCRAP FILLERI ---- II ---LARGE 16 3/161/16 SHEETRIG T SIDE NYROD SUPPORT--I CROSSGRV16 PLYWOOD I/B DOWELAIN EPOXY IN PLACE ALL FRAME PART 3/16TRIM TO MATCH AFTER COAT HANGER SQ SPRUCE LONGERONSPOSITIONING STAB S FIN WIRE SKID 3/16 REVERSE ON OPP SIDEREQ 48 STOCK OR SPLICEISTAB BBER PLYWOOD RADIO CONTROL ASSISTED FREE FLIGHT CENT DIHEDRAL BRACE1/16 PLYWOOD29-35 ENGINE 50 OZ WITH 2CH BRICK 800 SQ IN AS SHOWN MATHEWS REQ MANY FF WING DESIGNS MAY BE USED BORDEN1/16 PLY VOOL E DIHEDRAL BRACE April 1976 25 Ambivalent vantages small field use decom plication retrieving procedures remarkable upsurge interest RCOFF last two three years ripple surface muddled puddle future direction free flight slow flying structurally marginal senior citizens great fun simple fly often terribly difficult build None theless attracting more interest modelers seeking beauty free flight hassle stately old ladies grand mas future generation radioassisted free flight just non-radio controlled sisters gave birth current generation hot climbing free flight designs concept radio assisted free flight new Dick Mathis presented pio neering adaptation Hysteria-Ram bunctious series National Free Flight Society Symposium Chicago during 1972 Nationals presentation met little enthusiasm has indicated others confusion being almost laughed opinion Dick presented concept wrong people wrong time After reasonable contest-active free fighter satis fied hobby has adequate flying site enjoys retrieving direct article former free flight er has turned Old Timer RC Gliders sport flying guy has set wings stabilizer left over has thinking about RAFF assisted guy ambivalent about whole thing objective develop design envelope encompass easy construction use existing components available medium moderate performance profile last thing Id want present super critical airplane turn away anyone first try RAFF Ambivalent presented second generation development con cept have never flown RC please front end showing on-end mounting Perfect tank free-flight fashion shut-off timer switch Cowl covers tank its 29-35 power Ambivalent moves out rather rapidly tank run off would dis appear overhead Right Old-fashioned frame start model 15-19 tank mount better yet build Kloud King Model Aviation July 1975 Ambivalent stable glide moves out rather quickly under power therefore sure cranial computer can keep track right left coming going away Ambivalent has flown using wings Starduster 900 Witch Doctor 800 Buzzard Bombshell Mexi Boy Rambunc tious 747 Grabber 800 II chord x 72 span quick check will show almost 29-35 size free flight designs use II- 12-in chord will fit Ambivalent course brick battery pack location will vary order adjust CG servo rails deliberately long allow movement fore aft locate CG before mounting stabilizer shown photos old Rambunctious 747 sta bilizers contemporary B C jobs will work have wing sta bilizer plans show Grabber 800 wing rip off Mel Schmidts Shocer suitable stabilizer Construction Fuselage The fuselage will handled first extensively since key concept Trace cut out stick saw bulkheads 1/16 ply side pieces firewall 3/16 ply Drill holes mount blind nuts motor mount sides constructed 3/16 spruce directly over plan Build second side directly over first using Saran Wrap glue barrier areas may difficult separate table knife Dont forget gussets tail 26 Model Aviation .uw front boxy design lending note modern realism Cushionary air wheels let down easy Above assembly landing gear wires made clear shot attachment rubber bands wound around fuselage dowels band gusset placed match stabilizer size fill sheets allow PVC set least overnight before removing build ing board Editors Note PVC author means Poly Vinyl Chlorides yellow colored glues like Titebond Sig-Bond etc Separate halves gently popping apart table knife trim sand bulkheads BC D slip appropriate notches snugly glue position use epoxy Place fuselage wing rails down level building board using clothespins clamps adjust positions until box square dimensions check 900 triangles carpenters square Pin down building surface add 3/16 crosspieces bottom cover bottom 1/32 ply cross grained Now let everything set least 24 hours Mark midline onto bottom E place straight edge ruler yard stick etc line pull tail posts together centerline Cut mark cross pieces 3/16 X 3/16 spruce install top bottom using straight edge reference Allow PVC set 12 hours remove building sur face Fabricate tail skid clothes hanger wire trace tail outline onto scrap 3/32 ply cut out drill Epoxy wire ply ply tail Drill holes dowels dont cement permanently until cov ered Formers F through J cut out glued place dry add top stringers terminating scrap 3/16 balsa placed match stabilizer size nose block sanded match contour firewall Wing mount planking rails located allow access radio gear should placed until CG located Tray two servos rests hardwood rails run across fuselage cabin area Easily accessible open top Wing geodetic wing designed handle Monokote warping will find resistant torsion dimensions since mylar coverings add no torsional strength whatsoever power handling glide aspects best illustrated son Bruces Nationals second places C 1974 73 72 Construction straight forward using stock TE spruce spars both panels being exactly 36 in length Main ribs placed first cross ribs trimmed placed after main spars place three turbulator spars placed after dihedraling tips ends cut off after cement set blocked up angle sanded edge table epox ied place Center sections handled same manner slot dihedral gusset cut using two hacksaw blades taped together Gussets added tips glued carved shape leading edge carved turbulators glued entire frame work sanded weight added light tip until wing bal ances midline Cover Mono Solar-Kote Stabilizer First lets presume have old B-C size stabilizer merely need add elevator Use straight edge trim trailing edge 3/16 thickness glue tiller 3/16 X 3/16 hard balsa onto edge Cut elevator 3/16 sheet join clothes hanger wire con nector shown Cut hinge slots stabi lizer TE LE elevator airfoil shape sanding after hinge slots etc cut can working flat surface avoids misaligned slots Monokoted elevator covered filler strip stabilizer vinyl tape installed hinges tooth picks through holes may find necessary install second rib cen ter stabilizer create slot fin also sure stabilizer has enough center section till give good solid seat continued page 90 April 1976 27 against stabilizer mount Fin Rudder Couldnt figure out anything simpler rudder plenty large want person alize Ambivalent heres good spot just keep area about same Cover hinge install slot sta bilizer sub-rudder filler cut match outline rudder already mount ed stabilizer Assembly stabilizer should po sitioned fuselage hinge line clears tail post soft aluminum could tin strip wrapped around connector horn two 3/48 bolts sticking through keep stabilizer hold down bands binding elevator movement works shim drawn fuselage side should nor necessary Install large Sig nylon horns onto rudder elevator before strapping sembly onto fuselage Temporarily position fin-stabilizer onto fuselage run Nyrods through filler sheets rear holes bulkhead E connect horns Temporarily mount engine landing gear prop-spinner Determine CG moving brick battery fore aft mark epoxy cross pieces after remov FLIGHT LITE THE ON BOARD BATTERY MONITOR LIGHT THAT GOES OUT WHEN 10-20 MINUTES OF SAFE CHARGE REMAINS DOES NOT FADE OUT SNAPS IN HOLE DETECTS BAD CELLS PILOT LIGHT GUARANTEED SEE THE LIGHT CAN YOU AFFORO NOT TO ADVANCED DEVICES INC P0 800 iS SOCKVILLE MD 20850 SOIREES VIA 1ST CLASR MAIL Dnalere Invited PROTECT YOUR INVESTMENT WITH ODe NICAS Wieh ret Type ot Dune Cent 695 AS SHOWN 995 DELUXE neutral cowl cut clear engine adjusted closely approximate spin ner can held place screws running filler block top ply bottom threaded metal angles sides Cut windscreen pattern butyrate sheet hold place fuselage masking tape use hair dryer warm slightly will mold shape can also done Monokote iron dont touch mounted side windows before Monokoting tricky good neat installation Install wing mount sheeting rails recheck parts installed Remove dowels etc cover fuselage like vinyl trim tapes decoration let artistic talent dictate Ambivalent IS trimmed tank shown Perfect #6 repiped bring lines out easier accesses Tatone timer will run 19 seconds little Untimed tank will put model out sight Flying Initial flight should hand glides CG correctly located dive stall can corrected stabilizer shim gentle right glide circle can created stabilizer tilt rudder tab First powered flights connec tors outside holes horns large prop cool fuel over control power model set up will climb nicely much assistance Upon breaking ground about three feet little down elevator may needed absolutely no up turn Use short motor runs 3-5 sec onds until youre confident power pattern try straight away climb little right rudder motor dies avoid transition stall Once things going consistently go normal free-flight-size prop motor size heat up fuel set timer full run go hunt lift Ambivalent heavily loaded current compe tition machine 50 ounces opposed 3436 will thermal nicely penetrate wind back launch site easily Whether construct yours avail able remains build scratch Im sure after few solid thermal flights terminated feet will no longer ambivalent about RAFF would appreciate comments ex periences new experience Write dont call D B Mathews DDS 119 West Morton Greensburg Kan 67054 Club Newsletter/Hard continued page 46 announcements should printed least full month ahead such contests fun flys special events banquets can extra sheets used inserts newsletter As help getting newsletter ready mailing like stapling folding addressing postage mailing say 25 50 copies can yourself Fifty 100 copies help should arranged some can staple fold staple others can affix address labels stamps Maybe arrangements can made have members mail again credit can given print helping club newsletter very important item must appear newsletter name editor address city zip number other item phone number An other thing remember desire editorialize newsletter editors please keep mind give true facts fancy Never use newsletter attack members club others As editor can great help club acting Club Historian can assist Secretary too can Public Relations man club So good luck keep plugging way Newsletter Editor rough must have thick shell strong will plus dedication task 90 Model Aviation Ambivalent/Mathewsing brick After epoxy has set remount continued page 27brick trim adjust Nyrods give
Edition: Model Aviation - 1976/04
Page Numbers: 23, 24, 25, 26, 27, 90
Dee B Mathews THE DICTIONARY defines ambiva lence state having simultaneous conflicting attitudes feelings Truly us modelers ambivalent about concept radio-assisted free flight have negative feelings toward losing esthetic freedom models glide positive ones concerning obvious adAMBIVALENT radio-assisted Free Flight directed former Free Flight competition person mind has turned Old-Timers RC gliders just sport flying April 1976 23 Above The Ambivalent Buzzard Bombshell wing place picture bottom shows ship Mexi Boy wing beauties design wide latitude old free-flight wings tails will accept airplane confused Old Timerit modern design although along some Old Timer parameters designed climb high cut engine guided assisted can cut down retrieval inclined course can fly RC sport less power 1/16 PLYWOODL EI/2 SQLEBRACE III 1/16 X 1/4 SPRUCE OPTIONAL WEB SPARS TURBULATOR TILT RIB FOR1/16 PLYWOODI/16SHEET DIHEDRALDIHEDRAL BRACEGRAIN VERTICALSPRUCE SPAR TOP & BOTTOM BOTH PANELS FRONT B REAR NOTCH RIBSTE I/4XI FOR GUSSETTAPERED STOCK CLEARANCE -WING BUILDING SEQUENCE LAY DOWN LE TE BOTTOM SPAR B GUSSETS ASSEMBLE CHORDAL RIBS TRIM B FIT DIAGONAL RIBS ADD TOP SPAR 8 ASSEMBLE PANELS WITH DIHEDRAL AS SHOWN SELECT MOUNT TO SUITNOTCH RIBS & INSTALL TURBULATORS ENGINE USE PLYWOODADD TIPS B SHAPE LE B TIPS SPACERS TO POSITIONREINFORCE JOINT & EPOXY MOUNT TATONE 29/4 FOR________ ST 2935mr -___ __I]I ______ __ K11111 COWELDRILL B INSTALL 4-40 BLINDL N_______________ IItI SIG KADET NUTS BEFORE ASSEMBLY -PERFECT#6 TANK AS SHOWN I/ - j COWL OUTLINE -I 3/16 PLYWOOD[0 K CUT OUT FOR TIMER - -----__ ------42 SPINNER ORIGINAL POWERED BY ST 29 SECTION AT RECEIVER-SERVO STAB RIB CHORDAL 16 REQ C GRAIN I/ISEE -RIB -j 6 REQ 3/32SHEET n ----- CROSSGRAINJ BLOCKTHIS AREASHEET B WING B WINDSCREEN -__ CLARITY ACCESSFOR CLARITY OMITTED FOROPEN FORRAILS OMITTED U REA SEAT WILL ACCOMODATE II0R12 WINGWINDS FROMCUT F L E EDGE OF WING USED/BUTYF WITH REPIPE DIAGRAM FOR TIMERWITH PRUCE WING B LG DOWEL 3/16 DIA cT #6 TANK WING RAILS 1/8 X 1/ RUBBER NYROD STOPPERSNYROD PUSHRODS BLOCK 3/16 SHEET NO CROSS FILL/8 SHEETMEMBERS CROSSGRAIN 7 3/16PLYWOODTHIS AREASIDEPLACE BATTERY -PPOSITE EXHAUSTTO ADJUST C G ALL GUSSETS 1/16 PLYWOODIM PRODUCTS WORLD ENGINES 3/16 SHEET CROSSGRAIN TO H-3 READY TO USE L GC TRACE PARTS BUTYRATEATTACH TO K RIAL CUT OUT B PEELV16 PL _____OFF PATTERN RAILS 3/8SQ MAPLE 1/16 PLYWOODAMBIVAL 3-48SCREWS WHEELS 3 I/2DIADESIGNED S DRAWN 02346TRACED FOR MODEL AVIATI 24 Model Aviation CLOTH & E~2 JOINTSI N t1IIII RIBFORTIPS HEDRALIi 3/8OR 1/2 PANELSSHEET GUSSETS 3/16SHEET i -- - -- --- _____TFS 3/16 OR 1/43/16SHEET 1 j11 tiII 3/16XI/4 SPARS HARDKK K I/8X3/4 3/16SQ FRONT DIAGONAL RIB I8REQ 1/16 C GRAIN SHEET~ II TRIM TO FIT 1/16 C GRAIN -18 REQ7JjjFINMETALHANGER IRIB NO BIND JOINER ________@LARGE SIG - ELEVATOR IrL BOTTOM STAB RESTV6X 1A4X 31/2 __PLYWOODb1h/_ ATTERN 4---ii HEET- -- C GRAIN CK IN PLACE--- 3A6SQSHEET ER TO SHAPESPRUCE ___ [ TAPE & WARM MERS ia cZi 1/16 SHEET 3/16X 1/2 /IIIi SHEET FILL 3/16SQ SPRUCE ONE SIDE ONLY' X 3/16 /@---ff-ii-\ PUSHROD EXIT 3/16 SHEET NOTCH 3/16SQ SPRUCE STRINGERS 2 ROUNDADJUST SPACE TO FITTO MATCH STAB SPARS __CORNERS AFTER __-- ____ASSEMBLYT BOR 9 STAB HINGE LINEAT TAIL POSTCRAP FILLERI ---- II ---LARGE 16 3/161/16 SHEETRIG T SIDE NYROD SUPPORT--I CROSSGRV16 PLYWOOD I/B DOWELAIN EPOXY IN PLACE ALL FRAME PART 3/16TRIM TO MATCH AFTER COAT HANGER SQ SPRUCE LONGERONSPOSITIONING STAB S FIN WIRE SKID 3/16 REVERSE ON OPP SIDEREQ 48 STOCK OR SPLICEISTAB BBER PLYWOOD RADIO CONTROL ASSISTED FREE FLIGHT CENT DIHEDRAL BRACE1/16 PLYWOOD29-35 ENGINE 50 OZ WITH 2CH BRICK 800 SQ IN AS SHOWN MATHEWS REQ MANY FF WING DESIGNS MAY BE USED BORDEN1/16 PLY VOOL E DIHEDRAL BRACE April 1976 25 Ambivalent vantages small field use decom plication retrieving procedures remarkable upsurge interest RCOFF last two three years ripple surface muddled puddle future direction free flight slow flying structurally marginal senior citizens great fun simple fly often terribly difficult build None theless attracting more interest modelers seeking beauty free flight hassle stately old ladies grand mas future generation radioassisted free flight just non-radio controlled sisters gave birth current generation hot climbing free flight designs concept radio assisted free flight new Dick Mathis presented pio neering adaptation Hysteria-Ram bunctious series National Free Flight Society Symposium Chicago during 1972 Nationals presentation met little enthusiasm has indicated others confusion being almost laughed opinion Dick presented concept wrong people wrong time After reasonable contest-active free fighter satis fied hobby has adequate flying site enjoys retrieving direct article former free flight er has turned Old Timer RC Gliders sport flying guy has set wings stabilizer left over has thinking about RAFF assisted guy ambivalent about whole thing objective develop design envelope encompass easy construction use existing components available medium moderate performance profile last thing Id want present super critical airplane turn away anyone first try RAFF Ambivalent presented second generation development con cept have never flown RC please front end showing on-end mounting Perfect tank free-flight fashion shut-off timer switch Cowl covers tank its 29-35 power Ambivalent moves out rather rapidly tank run off would dis appear overhead Right Old-fashioned frame start model 15-19 tank mount better yet build Kloud King Model Aviation July 1975 Ambivalent stable glide moves out rather quickly under power therefore sure cranial computer can keep track right left coming going away Ambivalent has flown using wings Starduster 900 Witch Doctor 800 Buzzard Bombshell Mexi Boy Rambunc tious 747 Grabber 800 II chord x 72 span quick check will show almost 29-35 size free flight designs use II- 12-in chord will fit Ambivalent course brick battery pack location will vary order adjust CG servo rails deliberately long allow movement fore aft locate CG before mounting stabilizer shown photos old Rambunctious 747 sta bilizers contemporary B C jobs will work have wing sta bilizer plans show Grabber 800 wing rip off Mel Schmidts Shocer suitable stabilizer Construction Fuselage The fuselage will handled first extensively since key concept Trace cut out stick saw bulkheads 1/16 ply side pieces firewall 3/16 ply Drill holes mount blind nuts motor mount sides constructed 3/16 spruce directly over plan Build second side directly over first using Saran Wrap glue barrier areas may difficult separate table knife Dont forget gussets tail 26 Model Aviation .uw front boxy design lending note modern realism Cushionary air wheels let down easy Above assembly landing gear wires made clear shot attachment rubber bands wound around fuselage dowels band gusset placed match stabilizer size fill sheets allow PVC set least overnight before removing build ing board Editors Note PVC author means Poly Vinyl Chlorides yellow colored glues like Titebond Sig-Bond etc Separate halves gently popping apart table knife trim sand bulkheads BC D slip appropriate notches snugly glue position use epoxy Place fuselage wing rails down level building board using clothespins clamps adjust positions until box square dimensions check 900 triangles carpenters square Pin down building surface add 3/16 crosspieces bottom cover bottom 1/32 ply cross grained Now let everything set least 24 hours Mark midline onto bottom E place straight edge ruler yard stick etc line pull tail posts together centerline Cut mark cross pieces 3/16 X 3/16 spruce install top bottom using straight edge reference Allow PVC set 12 hours remove building sur face Fabricate tail skid clothes hanger wire trace tail outline onto scrap 3/32 ply cut out drill Epoxy wire ply ply tail Drill holes dowels dont cement permanently until cov ered Formers F through J cut out glued place dry add top stringers terminating scrap 3/16 balsa placed match stabilizer size nose block sanded match contour firewall Wing mount planking rails located allow access radio gear should placed until CG located Tray two servos rests hardwood rails run across fuselage cabin area Easily accessible open top Wing geodetic wing designed handle Monokote warping will find resistant torsion dimensions since mylar coverings add no torsional strength whatsoever power handling glide aspects best illustrated son Bruces Nationals second places C 1974 73 72 Construction straight forward using stock TE spruce spars both panels being exactly 36 in length Main ribs placed first cross ribs trimmed placed after main spars place three turbulator spars placed after dihedraling tips ends cut off after cement set blocked up angle sanded edge table epox ied place Center sections handled same manner slot dihedral gusset cut using two hacksaw blades taped together Gussets added tips glued carved shape leading edge carved turbulators glued entire frame work sanded weight added light tip until wing bal ances midline Cover Mono Solar-Kote Stabilizer First lets presume have old B-C size stabilizer merely need add elevator Use straight edge trim trailing edge 3/16 thickness glue tiller 3/16 X 3/16 hard balsa onto edge Cut elevator 3/16 sheet join clothes hanger wire con nector shown Cut hinge slots stabi lizer TE LE elevator airfoil shape sanding after hinge slots etc cut can working flat surface avoids misaligned slots Monokoted elevator covered filler strip stabilizer vinyl tape installed hinges tooth picks through holes may find necessary install second rib cen ter stabilizer create slot fin also sure stabilizer has enough center section till give good solid seat continued page 90 April 1976 27 against stabilizer mount Fin Rudder Couldnt figure out anything simpler rudder plenty large want person alize Ambivalent heres good spot just keep area about same Cover hinge install slot sta bilizer sub-rudder filler cut match outline rudder already mount ed stabilizer Assembly stabilizer should po sitioned fuselage hinge line clears tail post soft aluminum could tin strip wrapped around connector horn two 3/48 bolts sticking through keep stabilizer hold down bands binding elevator movement works shim drawn fuselage side should nor necessary Install large Sig nylon horns onto rudder elevator before strapping sembly onto fuselage Temporarily position fin-stabilizer onto fuselage run Nyrods through filler sheets rear holes bulkhead E connect horns Temporarily mount engine landing gear prop-spinner Determine CG moving brick battery fore aft mark epoxy cross pieces after remov FLIGHT LITE THE ON BOARD BATTERY MONITOR LIGHT THAT GOES OUT WHEN 10-20 MINUTES OF SAFE CHARGE REMAINS DOES NOT FADE OUT SNAPS IN HOLE DETECTS BAD CELLS PILOT LIGHT GUARANTEED SEE THE LIGHT CAN YOU AFFORO NOT TO ADVANCED DEVICES INC P0 800 iS SOCKVILLE MD 20850 SOIREES VIA 1ST CLASR MAIL Dnalere Invited PROTECT YOUR INVESTMENT WITH ODe NICAS Wieh ret Type ot Dune Cent 695 AS SHOWN 995 DELUXE neutral cowl cut clear engine adjusted closely approximate spin ner can held place screws running filler block top ply bottom threaded metal angles sides Cut windscreen pattern butyrate sheet hold place fuselage masking tape use hair dryer warm slightly will mold shape can also done Monokote iron dont touch mounted side windows before Monokoting tricky good neat installation Install wing mount sheeting rails recheck parts installed Remove dowels etc cover fuselage like vinyl trim tapes decoration let artistic talent dictate Ambivalent IS trimmed tank shown Perfect #6 repiped bring lines out easier accesses Tatone timer will run 19 seconds little Untimed tank will put model out sight Flying Initial flight should hand glides CG correctly located dive stall can corrected stabilizer shim gentle right glide circle can created stabilizer tilt rudder tab First powered flights connec tors outside holes horns large prop cool fuel over control power model set up will climb nicely much assistance Upon breaking ground about three feet little down elevator may needed absolutely no up turn Use short motor runs 3-5 sec onds until youre confident power pattern try straight away climb little right rudder motor dies avoid transition stall Once things going consistently go normal free-flight-size prop motor size heat up fuel set timer full run go hunt lift Ambivalent heavily loaded current compe tition machine 50 ounces opposed 3436 will thermal nicely penetrate wind back launch site easily Whether construct yours avail able remains build scratch Im sure after few solid thermal flights terminated feet will no longer ambivalent about RAFF would appreciate comments ex periences new experience Write dont call D B Mathews DDS 119 West Morton Greensburg Kan 67054 Club Newsletter/Hard continued page 46 announcements should printed least full month ahead such contests fun flys special events banquets can extra sheets used inserts newsletter As help getting newsletter ready mailing like stapling folding addressing postage mailing say 25 50 copies can yourself Fifty 100 copies help should arranged some can staple fold staple others can affix address labels stamps Maybe arrangements can made have members mail again credit can given print helping club newsletter very important item must appear newsletter name editor address city zip number other item phone number An other thing remember desire editorialize newsletter editors please keep mind give true facts fancy Never use newsletter attack members club others As editor can great help club acting Club Historian can assist Secretary too can Public Relations man club So good luck keep plugging way Newsletter Editor rough must have thick shell strong will plus dedication task 90 Model Aviation Ambivalent/Mathewsing brick After epoxy has set remount continued page 27brick trim adjust Nyrods give