NO OCR TEXT saga Kansas City Clipper began early days modeling us Kansas City area successfully designing flying rubber-powered models late 1 920s early 1 930s very difficult afford new gas model engines Depression years managed get first Ohlssons designed built first gas model 1936 eightfoot wingspan powered new Ohlsson 60 some good flights first design disaster struck windy day Old Richards Field just outside Kansas CityOthers patiently stayed grounded flew headed straight wind lifted like express elevator about 150 feet suddenly nosed over came roaring straight down plowed total loss crankshaft new Ohlsson 60 bent wished waited better wind conditions others perhaps adjusted trim bit Too lateit gone Like mythical Phoenix Kansas City Clipper concept emerged shattered remains first gas-powered model Shortly after fatal crash design conceived made final drawings early 1937 three-views really looked goodit wasnt boxy like early designs planked oval-cross-section fuselage elliptical outer wing panels made some fairly difficult construction spite finished Kansas City Clipper 1937 covered silk clear doped black trim finished two coats Packard car cream lacquer model weighed just under six pounds repaired Ohlsson 60 provided sufficient power gentle climbs Stability excellent flights concluded good flat glide slope built wing three sections landing gear plugged made convenient packing shipping folks shipped model Burbank California gone 1938 complete aeronautical engineering studies Clippers last flight 1939 eyedropper gas should have used climbed its usual gentle angle headed southeast knew right away chase necessary buddy cranked up old Model followed best could lost sight continued general flight direction spotted crowd Sure enough Clipperit glided side garage no damage anything anyone except engine firewall bulkhead pushed back fuselage too bad things considered Kansas City Clipper later disassembled boxed shipped back folks attic Kansas City later went attic Falls Church Virginia restored 1988 offered AMA Museum now resides its original splendor Bill Murray Temple Texas will continue saga Kansas City Clipper tell rediscovered late 1989 became acquainted Keith late 1989 continued acquaintance letter phone exchanged photos models built Kansas City Clipperit struck fancy wanted very badly eye-catcher ahead its time didnt know time about start interesting rewarding projects have ever undertaken After seeing picture Kansas City Clipper phoned Keith told him just build leaning toward radio-controlled version told quarter-scale three-view drawing elated needed get started start did decided original lines remain essentially unchanged some construction changes would requiredmost notably movable control surfaces Another obvious requirement would access install service radio gear well fuel tank also wanted beef up fuselage withstand occasional bumpy landings None contemplated modifications would change models appearance airworthiness got started detailed full-size plans last ready get jewel underway beginners project Ill wager modelers can get Kansas City air will welcome change pace challenge doing something different GENERAL CONSTRUCTION NOTES used tracing paper copy parts plans attached tracings wood 3M spray adhesive paper peels off after cutting time parts should numbered otherwise identified could kit entire model before construction begins Adhesives used cyanocrylates CyA epoxies six- 45minute working times sandable aliphatic-resin glue Sig-Ment model airplane cement usual assortment tools employed Some favorites Zona saw has detachable 4/2-inch blade stiffener across top can ripsaw it just thing saw access hatch fuselage Straight pins sizes got yard-goods store little fine ones thin sharp rarely split small pieces balsa Rocket City Pin Clamps came handy too good stock single-edge razor blades #11 X-Acto blades always use sharp blade Strips laminating soaked ammonia water used aliphatic-resin glue bent strips around outline pins previously placed over plans strips pinned place allowed dry Leading edge curves sanded rough shape prior assembly Fuselage Jig Make jig blocks 2 x 4 scraps Cut six pieces six inches long ends must square will set end block up fuselage times during construction Since 2 x 4 actually measures 11/2 x 3/2 two fuselage jig blocks can double dihedral supports Cut 1/2 x la/s slot middle two blocks cement x balsa strip raise height 1 5A inchesjust right block inside wing panel up proper dihedral Cut five pieces 1 x 6 scrap 3/ plywood building aids used conjunction jig blocks prop up fuselage Photos show arrangement fuselage must blocked up crutch times during construction dry-fit various components top crutch side longerons thrust line should level check wing stabilizer incidence achieve put two 1 x 6 building aid sticks top crutch between bulkheads projected beyond fuselage enough put nine-inch carpenters level After leveling crutch checked incidence Robart meter FUSELAGE CONSTRUCTIONPRELIMINARY Bulkhead notches need sized accurately longerons should fit snugly facilitate fuselage assembly meet requirement made several notch sanders re hard balsa November1993 17 Completed model yet flown time photo Iron-on fiberlike covering used simulate silk covering original model K&B Super Poxy trim 2 hard balsa scraps about four five inches long Sand down bit compensate sandpaper thickness glue sandpaper three sides great job bulkheads nbs desired snug fits rewarding bulkheads sub-fin rib doublers cut Lite Ply Birch plywood used firewall pylon other plywood parts also used A2 /&4 plywood some places fuselage top bottom longerons cut shape balsa sheet continuous length both /2-inch deep fit bulkhead notches Control Linkages used Gold-N-Rods blue sheaths rudder elevator cable tubing throttle Before laminating firewall cut slot landing gear LG platform /8-inch plywood epoxy cures drill install blind nuts motor mount drill holes fuel lines throttle tubing Shim motor mount about two degrees right down thrust Finish LG supports including brass tubing Epoxy rear support trianglestock bracing BH 3 Epoxy front support LG platform Epoxy balsa stiffeners top BHs 34 5 Using BH pattern outline reinforcement area ood Cut epoxy doublers both sides BHs 4 5 Using BHs 3 6 patterns outline hatch formers 3A 6A /s Lite Ply cut sand exact match lay aside Pin top bottom longerons over plan mark number BH location sides tops Remove Make fuselage crutch side longerons temporary crosspieces pinning re hard balsa strips over top view fuselage Make vertical razor saw cuts longerons bend inward BH 8 weaken bit will bend easier bulge beyond point Force epoxy cut restrengthen Fit longerons rear CyA Cement re balsa crosspieces just behind firewall BH 4 front BH 8 Remove after fuselage built Mark number BH location side top both longerons Removeit should hold its shape FUSELAGE ASSEMBLY Begin hand-holding tee crutch dry-fitting BHs 2 through 1 3A firewall added later crutch longerons parallel firewall BH 8 Beyond BH 8 longerons taper easier slip BHs through crutch engage notches longerons slide back marked positions half-BHs beyond BH 1 3A added later Trial-fit top longeron mporary longeron required maintain BH alignment top front firewall through BH5 pylon eventually goes now have top longeron firewall BH 13A Place assembly top-side-down over plans Put 2 x 4 jig fuselage top view just behind firewall slot straddling fuselage centerline Put other jig between BHs 7 8 positioning same way Remove top longerons lay crutch jigs top next plans replace top longerons jig slots straddling sure BHs marked positions permanent top longeron Anchor jigs align crutch top view fuselage pin jigs Put 2 x 4 blocks side crutch between BHs 12 13 push until top longeron sandwiched Check fuselage alignment plans anchor blocks crutch fuselage now should firmly place bottom-side up worst over Align BHs perpendicular crutch Put half-BHs 14 through 16 place dry-fit bottom longeron everything place its time CyA 18 Model Aviation nnage wing center section have oeen ary-TIT ai mis point Note use jigs support align fuselage Empennage components saddle pieces fuselage stabl elevator platform Hatch formers rails background Positioners support front wing rod tubing can seen view inner wing panels Backs side longerons have received 1/4-inch-square balsa between bulkheads part fuselage beef-up process KC Clipper N // N N BALSA GUSSETS - LSRSTRIBS SA SPARS 61 SIZE ENGINE LAMIISJRTIQNS O 1 BALSA SIft / ARE YOU SURE THIS STAt Wy BET WINTER GOT STAITED UNCLE 5INER FA*$ &15T FEW. lINUrF~ z-zz-z 5 STRIPS A SRS BALSA ~BALSA3 7 3A2 BALSA RIB5 6 BALSA SIlTA/I 4 A4 PRUCE SLSA SMT ERLSA PLANKING BALSA RIBS xX SPRUCE- SPAR IAMW - PD RIB LAMINATED XZDIA MW4 DIR PNEUMATIC LSA Si-IT 32 BALSA SAT Full Size Plans Available-See Page 160 joints except temporary top longeron Keep fuselage anchored place As position firewall slip LG platform slots back firewall BH 2 used 45-minute epoxy gave enough time accurately align firewall no offset epoxy has cured add triangular bracing gussets firewall BH 2 Servo rails can added time Remove fuselage admire Planking Here fun begins Use 1/8 x a strips Start strip over longeron alternate two strips either side side longerons After five six strips side add about same number top bottom balanced approach will prevent fuselage being pulled out shape used Sig-Ment between strips CyA attach strips bulkheads fairly large sanding block needed achieve smooth finish fill low spots Model Magic Omit planking strip side pylon slot Fill after WCS/pylon assembly epoxied fuselage Access Hatch Install cement end formers 3A 6A shim 1A2 balsa scraps simplify removal later same applies hatch top rails fuselage planking finished sanded saw hatch fuselage Begin sawing vertical gap between BHs hatch formers after two three planking strips place cement set keeps sawing gap accessible keeps becoming clogged cement saw topmost planking strips time help hold hatch firmly place until completely separated fuselage Keep horizontal gap between hatch fuselage accessible sawing hatch finally separated fuselage piece planking missing area either fuselage and/or hatch Remove hatch after fuselage planked sanded shape Add A2 balsa sheet ends hatch formers top rails compensate 1/32 gap built sawing Sand snug fit Cowl construction details 1 finished walls should least -inch thick 2 Cut some wood out middle balsa ovals before epoxying together Cement F oval cowl after finished 20 Model Aviation NTOP VIEW /S/N\ _ \FUSELAGE / TON-V __ 7 ILARDING GEAR PATTERNSPIN BLOCK PATTERNS J~NSSY~N5NN55Y5 NON NNNNNNN MODEL AVIATION K C CLIPPER ____________FUSELAGE SIDE VIEW AOIROIJLNIVOVASON BOVAWO BY BILL MURRAY Outer wing panels after final sanding Aluminum tee-bar sanders used achieve consistent taper Wing center sectionlpylon has installed streamlining pieces have added Model Magic fills gaps WING PLAN CENTER SECTION / INNER INS PL iLjitN ____________________________________________________________[v32][b1179648143300]]__ t ___ GHT WING PANEL___ IWN - SN ______________ NINS~ AZ LEFTNO 3 When cowl has sanded shape faired fuselage cut half thrustline found easier finish sanding inside after cut 4 Check fit engine mounted make sure throttle arm can move full-range fit satisfactory keep bottom place cut fit F oval epoxy pin place cured sand shape 5 Inlay 1/16 plywood wood screws used hold cowling place 6 Brush several coats thinned epoxy inside EMPENNAGE CONSTRUCTION Cement tip pieces leading trailing edges flat building board shim up cement tip pieces spars Cement fairing pieces TE fuselage after empennage permanently installed Tack spars together light spots aliphatic-resin glue Put removable sheet balsa scraps center slot stabilizer size fin/rudder keel sure center ribs perpendicular building board Pop spars apart after sanding saw rear spar elevators install elevator horn epoxy center section stabilizer Carve fit fuselage tail section block drill hole rudder linkage Remember make block oversize joins BH 13A Dry-fit stabilizer gold rod attached elevator horn Check incidence adjust saddle necessary Dry-fit remaining components pin place Connect gold rod rudder horn Check smooth movement elevator rudder hand-operating gold rods servo area used 45-minute epoxy install empennage First attach z-bend elevator horn gold rod its blue sheath move stab/elevator toward its saddle onto put carved tail section place Slip fin/rudder keel through slot until firmly position Recheck fit empennage components pin place let cure overnight Sub-Fin Carbon Fibers Epoxy sub-fin place carbon-fiber tape hand thought little high-tech stuff might helpful put tape longerons added strength believe optional because planked fuselage exceptionally strong PYLON/WING CENTER SECTION CONSTRUCTION Ink locations pylon rib outline its lateral center line line representing top top longeron November 1993 21 RIR ANE L IK C CLIPPER INNER WINO PANEL DETAIL Skeleton view after planking has begun Balanced application fuselage shell has planked cowl shaping has planking strips helps fuselage retain correct shape begun Additional planking added after pylon mounted Full Size Available-See Pagel6O s-I3-2 --_ AK Kg3A OWE S-43 0 SIDE FRONT VIEW ii --1-- 4 aF- II- TOP VIEW OR K C CLIPPER CrAILCCCOCWC BC BILL COJARAC 00*0106 BC ACE ODARBOC BC 1 STAWI IZER vertical lines representing extended notches BHs 3 4 5 marks convenient checking built-in wing incidence fit pylon streamlining pieces must slotted fit over extended notches BHs dry-fitting pylon fuselage make certain fits snugly BH notches cuts rests top longeron Also see perpendicular crutch bottom parallel crutch Wing Center Section WCS ribs adjoining ribs inner panels same size Stack sand align size notches drill rod dowel holes etc Use t balsa removable scraps size pylon slot keep center ribs perpendicular building board No built-in tilts please WCS bottom spars end pylon slot pylon should project above rib line can slightly below used K&S wing rod package3/s rod /2 tube 12 inches long cut tube half segment inner wing panel Music wire brass tubing used back WING PANEL CONSTRUCTION Evenly tapered wing ribs require persistent sanding remove high areas scraps balsa will fill low spots used 32-inch aluminum sander similar tee bar attained excellent taper lines applies fuselage bulkheads well wanted easy way establish consistent depth trailing edges rib capstripping /32 capstrips wing ribs CyAed 3/32-square balsa strip bottom TE serve jig rib placement Use /16-square balsa strips /6 capstrips specified did remove jig strips Because ribs different lengths inaccuracies could creep therefore cut ribs slightly long back sanded fit point eyeballed vertical size rib met TE sanded adjustments inner wing panel IWP tapers slightly narrows about half inch makes length airfoil rib little smaller going center section rib 9 airfoil difference about width pencil line rib pattern plan illustrates mind used following procedure cut size ribs 1 Cut out notch ribs 1 thru 8 using IWP rib 0 pattern same size center section ribs Ink centerline rib 2 Trim rib length number 3 Make rib 9 plan pattern ink centerline Engine size type ASP 61 Number RC channels Three Expected flying weight Nine pounds Type construction Built-up Covering/finish Fiberlike iron-on Super Poxy 22 Model Aviation RC Sport Wingspan 96 inches Waiting its turn Texas flight line Author Murray feels t interesting rewarding projects
Edition: Model Aviation - 1993/11
Page Numbers: 16, 17, 18, 19, 20, 21, 22
NO OCR TEXT saga Kansas City Clipper began early days modeling us Kansas City area successfully designing flying rubber-powered models late 1 920s early 1 930s very difficult afford new gas model engines Depression years managed get first Ohlssons designed built first gas model 1936 eightfoot wingspan powered new Ohlsson 60 some good flights first design disaster struck windy day Old Richards Field just outside Kansas CityOthers patiently stayed grounded flew headed straight wind lifted like express elevator about 150 feet suddenly nosed over came roaring straight down plowed total loss crankshaft new Ohlsson 60 bent wished waited better wind conditions others perhaps adjusted trim bit Too lateit gone Like mythical Phoenix Kansas City Clipper concept emerged shattered remains first gas-powered model Shortly after fatal crash design conceived made final drawings early 1937 three-views really looked goodit wasnt boxy like early designs planked oval-cross-section fuselage elliptical outer wing panels made some fairly difficult construction spite finished Kansas City Clipper 1937 covered silk clear doped black trim finished two coats Packard car cream lacquer model weighed just under six pounds repaired Ohlsson 60 provided sufficient power gentle climbs Stability excellent flights concluded good flat glide slope built wing three sections landing gear plugged made convenient packing shipping folks shipped model Burbank California gone 1938 complete aeronautical engineering studies Clippers last flight 1939 eyedropper gas should have used climbed its usual gentle angle headed southeast knew right away chase necessary buddy cranked up old Model followed best could lost sight continued general flight direction spotted crowd Sure enough Clipperit glided side garage no damage anything anyone except engine firewall bulkhead pushed back fuselage too bad things considered Kansas City Clipper later disassembled boxed shipped back folks attic Kansas City later went attic Falls Church Virginia restored 1988 offered AMA Museum now resides its original splendor Bill Murray Temple Texas will continue saga Kansas City Clipper tell rediscovered late 1989 became acquainted Keith late 1989 continued acquaintance letter phone exchanged photos models built Kansas City Clipperit struck fancy wanted very badly eye-catcher ahead its time didnt know time about start interesting rewarding projects have ever undertaken After seeing picture Kansas City Clipper phoned Keith told him just build leaning toward radio-controlled version told quarter-scale three-view drawing elated needed get started start did decided original lines remain essentially unchanged some construction changes would requiredmost notably movable control surfaces Another obvious requirement would access install service radio gear well fuel tank also wanted beef up fuselage withstand occasional bumpy landings None contemplated modifications would change models appearance airworthiness got started detailed full-size plans last ready get jewel underway beginners project Ill wager modelers can get Kansas City air will welcome change pace challenge doing something different GENERAL CONSTRUCTION NOTES used tracing paper copy parts plans attached tracings wood 3M spray adhesive paper peels off after cutting time parts should numbered otherwise identified could kit entire model before construction begins Adhesives used cyanocrylates CyA epoxies six- 45minute working times sandable aliphatic-resin glue Sig-Ment model airplane cement usual assortment tools employed Some favorites Zona saw has detachable 4/2-inch blade stiffener across top can ripsaw it just thing saw access hatch fuselage Straight pins sizes got yard-goods store little fine ones thin sharp rarely split small pieces balsa Rocket City Pin Clamps came handy too good stock single-edge razor blades #11 X-Acto blades always use sharp blade Strips laminating soaked ammonia water used aliphatic-resin glue bent strips around outline pins previously placed over plans strips pinned place allowed dry Leading edge curves sanded rough shape prior assembly Fuselage Jig Make jig blocks 2 x 4 scraps Cut six pieces six inches long ends must square will set end block up fuselage times during construction Since 2 x 4 actually measures 11/2 x 3/2 two fuselage jig blocks can double dihedral supports Cut 1/2 x la/s slot middle two blocks cement x balsa strip raise height 1 5A inchesjust right block inside wing panel up proper dihedral Cut five pieces 1 x 6 scrap 3/ plywood building aids used conjunction jig blocks prop up fuselage Photos show arrangement fuselage must blocked up crutch times during construction dry-fit various components top crutch side longerons thrust line should level check wing stabilizer incidence achieve put two 1 x 6 building aid sticks top crutch between bulkheads projected beyond fuselage enough put nine-inch carpenters level After leveling crutch checked incidence Robart meter FUSELAGE CONSTRUCTIONPRELIMINARY Bulkhead notches need sized accurately longerons should fit snugly facilitate fuselage assembly meet requirement made several notch sanders re hard balsa November1993 17 Completed model yet flown time photo Iron-on fiberlike covering used simulate silk covering original model K&B Super Poxy trim 2 hard balsa scraps about four five inches long Sand down bit compensate sandpaper thickness glue sandpaper three sides great job bulkheads nbs desired snug fits rewarding bulkheads sub-fin rib doublers cut Lite Ply Birch plywood used firewall pylon other plywood parts also used A2 /&4 plywood some places fuselage top bottom longerons cut shape balsa sheet continuous length both /2-inch deep fit bulkhead notches Control Linkages used Gold-N-Rods blue sheaths rudder elevator cable tubing throttle Before laminating firewall cut slot landing gear LG platform /8-inch plywood epoxy cures drill install blind nuts motor mount drill holes fuel lines throttle tubing Shim motor mount about two degrees right down thrust Finish LG supports including brass tubing Epoxy rear support trianglestock bracing BH 3 Epoxy front support LG platform Epoxy balsa stiffeners top BHs 34 5 Using BH pattern outline reinforcement area ood Cut epoxy doublers both sides BHs 4 5 Using BHs 3 6 patterns outline hatch formers 3A 6A /s Lite Ply cut sand exact match lay aside Pin top bottom longerons over plan mark number BH location sides tops Remove Make fuselage crutch side longerons temporary crosspieces pinning re hard balsa strips over top view fuselage Make vertical razor saw cuts longerons bend inward BH 8 weaken bit will bend easier bulge beyond point Force epoxy cut restrengthen Fit longerons rear CyA Cement re balsa crosspieces just behind firewall BH 4 front BH 8 Remove after fuselage built Mark number BH location side top both longerons Removeit should hold its shape FUSELAGE ASSEMBLY Begin hand-holding tee crutch dry-fitting BHs 2 through 1 3A firewall added later crutch longerons parallel firewall BH 8 Beyond BH 8 longerons taper easier slip BHs through crutch engage notches longerons slide back marked positions half-BHs beyond BH 1 3A added later Trial-fit top longeron mporary longeron required maintain BH alignment top front firewall through BH5 pylon eventually goes now have top longeron firewall BH 13A Place assembly top-side-down over plans Put 2 x 4 jig fuselage top view just behind firewall slot straddling fuselage centerline Put other jig between BHs 7 8 positioning same way Remove top longerons lay crutch jigs top next plans replace top longerons jig slots straddling sure BHs marked positions permanent top longeron Anchor jigs align crutch top view fuselage pin jigs Put 2 x 4 blocks side crutch between BHs 12 13 push until top longeron sandwiched Check fuselage alignment plans anchor blocks crutch fuselage now should firmly place bottom-side up worst over Align BHs perpendicular crutch Put half-BHs 14 through 16 place dry-fit bottom longeron everything place its time CyA 18 Model Aviation nnage wing center section have oeen ary-TIT ai mis point Note use jigs support align fuselage Empennage components saddle pieces fuselage stabl elevator platform Hatch formers rails background Positioners support front wing rod tubing can seen view inner wing panels Backs side longerons have received 1/4-inch-square balsa between bulkheads part fuselage beef-up process KC Clipper N // N N BALSA GUSSETS - LSRSTRIBS SA SPARS 61 SIZE ENGINE LAMIISJRTIQNS O 1 BALSA SIft / ARE YOU SURE THIS STAt Wy BET WINTER GOT STAITED UNCLE 5INER FA*$ &15T FEW. lINUrF~ z-zz-z 5 STRIPS A SRS BALSA ~BALSA3 7 3A2 BALSA RIB5 6 BALSA SIlTA/I 4 A4 PRUCE SLSA SMT ERLSA PLANKING BALSA RIBS xX SPRUCE- SPAR IAMW - PD RIB LAMINATED XZDIA MW4 DIR PNEUMATIC LSA Si-IT 32 BALSA SAT Full Size Plans Available-See Page 160 joints except temporary top longeron Keep fuselage anchored place As position firewall slip LG platform slots back firewall BH 2 used 45-minute epoxy gave enough time accurately align firewall no offset epoxy has cured add triangular bracing gussets firewall BH 2 Servo rails can added time Remove fuselage admire Planking Here fun begins Use 1/8 x a strips Start strip over longeron alternate two strips either side side longerons After five six strips side add about same number top bottom balanced approach will prevent fuselage being pulled out shape used Sig-Ment between strips CyA attach strips bulkheads fairly large sanding block needed achieve smooth finish fill low spots Model Magic Omit planking strip side pylon slot Fill after WCS/pylon assembly epoxied fuselage Access Hatch Install cement end formers 3A 6A shim 1A2 balsa scraps simplify removal later same applies hatch top rails fuselage planking finished sanded saw hatch fuselage Begin sawing vertical gap between BHs hatch formers after two three planking strips place cement set keeps sawing gap accessible keeps becoming clogged cement saw topmost planking strips time help hold hatch firmly place until completely separated fuselage Keep horizontal gap between hatch fuselage accessible sawing hatch finally separated fuselage piece planking missing area either fuselage and/or hatch Remove hatch after fuselage planked sanded shape Add A2 balsa sheet ends hatch formers top rails compensate 1/32 gap built sawing Sand snug fit Cowl construction details 1 finished walls should least -inch thick 2 Cut some wood out middle balsa ovals before epoxying together Cement F oval cowl after finished 20 Model Aviation NTOP VIEW /S/N\ _ \FUSELAGE / TON-V __ 7 ILARDING GEAR PATTERNSPIN BLOCK PATTERNS J~NSSY~N5NN55Y5 NON NNNNNNN MODEL AVIATION K C CLIPPER ____________FUSELAGE SIDE VIEW AOIROIJLNIVOVASON BOVAWO BY BILL MURRAY Outer wing panels after final sanding Aluminum tee-bar sanders used achieve consistent taper Wing center sectionlpylon has installed streamlining pieces have added Model Magic fills gaps WING PLAN CENTER SECTION / INNER INS PL iLjitN ____________________________________________________________[v32][b1179648143300]]__ t ___ GHT WING PANEL___ IWN - SN ______________ NINS~ AZ LEFTNO 3 When cowl has sanded shape faired fuselage cut half thrustline found easier finish sanding inside after cut 4 Check fit engine mounted make sure throttle arm can move full-range fit satisfactory keep bottom place cut fit F oval epoxy pin place cured sand shape 5 Inlay 1/16 plywood wood screws used hold cowling place 6 Brush several coats thinned epoxy inside EMPENNAGE CONSTRUCTION Cement tip pieces leading trailing edges flat building board shim up cement tip pieces spars Cement fairing pieces TE fuselage after empennage permanently installed Tack spars together light spots aliphatic-resin glue Put removable sheet balsa scraps center slot stabilizer size fin/rudder keel sure center ribs perpendicular building board Pop spars apart after sanding saw rear spar elevators install elevator horn epoxy center section stabilizer Carve fit fuselage tail section block drill hole rudder linkage Remember make block oversize joins BH 13A Dry-fit stabilizer gold rod attached elevator horn Check incidence adjust saddle necessary Dry-fit remaining components pin place Connect gold rod rudder horn Check smooth movement elevator rudder hand-operating gold rods servo area used 45-minute epoxy install empennage First attach z-bend elevator horn gold rod its blue sheath move stab/elevator toward its saddle onto put carved tail section place Slip fin/rudder keel through slot until firmly position Recheck fit empennage components pin place let cure overnight Sub-Fin Carbon Fibers Epoxy sub-fin place carbon-fiber tape hand thought little high-tech stuff might helpful put tape longerons added strength believe optional because planked fuselage exceptionally strong PYLON/WING CENTER SECTION CONSTRUCTION Ink locations pylon rib outline its lateral center line line representing top top longeron November 1993 21 RIR ANE L IK C CLIPPER INNER WINO PANEL DETAIL Skeleton view after planking has begun Balanced application fuselage shell has planked cowl shaping has planking strips helps fuselage retain correct shape begun Additional planking added after pylon mounted Full Size Available-See Pagel6O s-I3-2 --_ AK Kg3A OWE S-43 0 SIDE FRONT VIEW ii --1-- 4 aF- II- TOP VIEW OR K C CLIPPER CrAILCCCOCWC BC BILL COJARAC 00*0106 BC ACE ODARBOC BC 1 STAWI IZER vertical lines representing extended notches BHs 3 4 5 marks convenient checking built-in wing incidence fit pylon streamlining pieces must slotted fit over extended notches BHs dry-fitting pylon fuselage make certain fits snugly BH notches cuts rests top longeron Also see perpendicular crutch bottom parallel crutch Wing Center Section WCS ribs adjoining ribs inner panels same size Stack sand align size notches drill rod dowel holes etc Use t balsa removable scraps size pylon slot keep center ribs perpendicular building board No built-in tilts please WCS bottom spars end pylon slot pylon should project above rib line can slightly below used K&S wing rod package3/s rod /2 tube 12 inches long cut tube half segment inner wing panel Music wire brass tubing used back WING PANEL CONSTRUCTION Evenly tapered wing ribs require persistent sanding remove high areas scraps balsa will fill low spots used 32-inch aluminum sander similar tee bar attained excellent taper lines applies fuselage bulkheads well wanted easy way establish consistent depth trailing edges rib capstripping /32 capstrips wing ribs CyAed 3/32-square balsa strip bottom TE serve jig rib placement Use /16-square balsa strips /6 capstrips specified did remove jig strips Because ribs different lengths inaccuracies could creep therefore cut ribs slightly long back sanded fit point eyeballed vertical size rib met TE sanded adjustments inner wing panel IWP tapers slightly narrows about half inch makes length airfoil rib little smaller going center section rib 9 airfoil difference about width pencil line rib pattern plan illustrates mind used following procedure cut size ribs 1 Cut out notch ribs 1 thru 8 using IWP rib 0 pattern same size center section ribs Ink centerline rib 2 Trim rib length number 3 Make rib 9 plan pattern ink centerline Engine size type ASP 61 Number RC channels Three Expected flying weight Nine pounds Type construction Built-up Covering/finish Fiberlike iron-on Super Poxy 22 Model Aviation RC Sport Wingspan 96 inches Waiting its turn Texas flight line Author Murray feels t interesting rewarding projects
Edition: Model Aviation - 1993/11
Page Numbers: 16, 17, 18, 19, 20, 21, 22
NO OCR TEXT saga Kansas City Clipper began early days modeling us Kansas City area successfully designing flying rubber-powered models late 1 920s early 1 930s very difficult afford new gas model engines Depression years managed get first Ohlssons designed built first gas model 1936 eightfoot wingspan powered new Ohlsson 60 some good flights first design disaster struck windy day Old Richards Field just outside Kansas CityOthers patiently stayed grounded flew headed straight wind lifted like express elevator about 150 feet suddenly nosed over came roaring straight down plowed total loss crankshaft new Ohlsson 60 bent wished waited better wind conditions others perhaps adjusted trim bit Too lateit gone Like mythical Phoenix Kansas City Clipper concept emerged shattered remains first gas-powered model Shortly after fatal crash design conceived made final drawings early 1937 three-views really looked goodit wasnt boxy like early designs planked oval-cross-section fuselage elliptical outer wing panels made some fairly difficult construction spite finished Kansas City Clipper 1937 covered silk clear doped black trim finished two coats Packard car cream lacquer model weighed just under six pounds repaired Ohlsson 60 provided sufficient power gentle climbs Stability excellent flights concluded good flat glide slope built wing three sections landing gear plugged made convenient packing shipping folks shipped model Burbank California gone 1938 complete aeronautical engineering studies Clippers last flight 1939 eyedropper gas should have used climbed its usual gentle angle headed southeast knew right away chase necessary buddy cranked up old Model followed best could lost sight continued general flight direction spotted crowd Sure enough Clipperit glided side garage no damage anything anyone except engine firewall bulkhead pushed back fuselage too bad things considered Kansas City Clipper later disassembled boxed shipped back folks attic Kansas City later went attic Falls Church Virginia restored 1988 offered AMA Museum now resides its original splendor Bill Murray Temple Texas will continue saga Kansas City Clipper tell rediscovered late 1989 became acquainted Keith late 1989 continued acquaintance letter phone exchanged photos models built Kansas City Clipperit struck fancy wanted very badly eye-catcher ahead its time didnt know time about start interesting rewarding projects have ever undertaken After seeing picture Kansas City Clipper phoned Keith told him just build leaning toward radio-controlled version told quarter-scale three-view drawing elated needed get started start did decided original lines remain essentially unchanged some construction changes would requiredmost notably movable control surfaces Another obvious requirement would access install service radio gear well fuel tank also wanted beef up fuselage withstand occasional bumpy landings None contemplated modifications would change models appearance airworthiness got started detailed full-size plans last ready get jewel underway beginners project Ill wager modelers can get Kansas City air will welcome change pace challenge doing something different GENERAL CONSTRUCTION NOTES used tracing paper copy parts plans attached tracings wood 3M spray adhesive paper peels off after cutting time parts should numbered otherwise identified could kit entire model before construction begins Adhesives used cyanocrylates CyA epoxies six- 45minute working times sandable aliphatic-resin glue Sig-Ment model airplane cement usual assortment tools employed Some favorites Zona saw has detachable 4/2-inch blade stiffener across top can ripsaw it just thing saw access hatch fuselage Straight pins sizes got yard-goods store little fine ones thin sharp rarely split small pieces balsa Rocket City Pin Clamps came handy too good stock single-edge razor blades #11 X-Acto blades always use sharp blade Strips laminating soaked ammonia water used aliphatic-resin glue bent strips around outline pins previously placed over plans strips pinned place allowed dry Leading edge curves sanded rough shape prior assembly Fuselage Jig Make jig blocks 2 x 4 scraps Cut six pieces six inches long ends must square will set end block up fuselage times during construction Since 2 x 4 actually measures 11/2 x 3/2 two fuselage jig blocks can double dihedral supports Cut 1/2 x la/s slot middle two blocks cement x balsa strip raise height 1 5A inchesjust right block inside wing panel up proper dihedral Cut five pieces 1 x 6 scrap 3/ plywood building aids used conjunction jig blocks prop up fuselage Photos show arrangement fuselage must blocked up crutch times during construction dry-fit various components top crutch side longerons thrust line should level check wing stabilizer incidence achieve put two 1 x 6 building aid sticks top crutch between bulkheads projected beyond fuselage enough put nine-inch carpenters level After leveling crutch checked incidence Robart meter FUSELAGE CONSTRUCTIONPRELIMINARY Bulkhead notches need sized accurately longerons should fit snugly facilitate fuselage assembly meet requirement made several notch sanders re hard balsa November1993 17 Completed model yet flown time photo Iron-on fiberlike covering used simulate silk covering original model K&B Super Poxy trim 2 hard balsa scraps about four five inches long Sand down bit compensate sandpaper thickness glue sandpaper three sides great job bulkheads nbs desired snug fits rewarding bulkheads sub-fin rib doublers cut Lite Ply Birch plywood used firewall pylon other plywood parts also used A2 /&4 plywood some places fuselage top bottom longerons cut shape balsa sheet continuous length both /2-inch deep fit bulkhead notches Control Linkages used Gold-N-Rods blue sheaths rudder elevator cable tubing throttle Before laminating firewall cut slot landing gear LG platform /8-inch plywood epoxy cures drill install blind nuts motor mount drill holes fuel lines throttle tubing Shim motor mount about two degrees right down thrust Finish LG supports including brass tubing Epoxy rear support trianglestock bracing BH 3 Epoxy front support LG platform Epoxy balsa stiffeners top BHs 34 5 Using BH pattern outline reinforcement area ood Cut epoxy doublers both sides BHs 4 5 Using BHs 3 6 patterns outline hatch formers 3A 6A /s Lite Ply cut sand exact match lay aside Pin top bottom longerons over plan mark number BH location sides tops Remove Make fuselage crutch side longerons temporary crosspieces pinning re hard balsa strips over top view fuselage Make vertical razor saw cuts longerons bend inward BH 8 weaken bit will bend easier bulge beyond point Force epoxy cut restrengthen Fit longerons rear CyA Cement re balsa crosspieces just behind firewall BH 4 front BH 8 Remove after fuselage built Mark number BH location side top both longerons Removeit should hold its shape FUSELAGE ASSEMBLY Begin hand-holding tee crutch dry-fitting BHs 2 through 1 3A firewall added later crutch longerons parallel firewall BH 8 Beyond BH 8 longerons taper easier slip BHs through crutch engage notches longerons slide back marked positions half-BHs beyond BH 1 3A added later Trial-fit top longeron mporary longeron required maintain BH alignment top front firewall through BH5 pylon eventually goes now have top longeron firewall BH 13A Place assembly top-side-down over plans Put 2 x 4 jig fuselage top view just behind firewall slot straddling fuselage centerline Put other jig between BHs 7 8 positioning same way Remove top longerons lay crutch jigs top next plans replace top longerons jig slots straddling sure BHs marked positions permanent top longeron Anchor jigs align crutch top view fuselage pin jigs Put 2 x 4 blocks side crutch between BHs 12 13 push until top longeron sandwiched Check fuselage alignment plans anchor blocks crutch fuselage now should firmly place bottom-side up worst over Align BHs perpendicular crutch Put half-BHs 14 through 16 place dry-fit bottom longeron everything place its time CyA 18 Model Aviation nnage wing center section have oeen ary-TIT ai mis point Note use jigs support align fuselage Empennage components saddle pieces fuselage stabl elevator platform Hatch formers rails background Positioners support front wing rod tubing can seen view inner wing panels Backs side longerons have received 1/4-inch-square balsa between bulkheads part fuselage beef-up process KC Clipper N // N N BALSA GUSSETS - LSRSTRIBS SA SPARS 61 SIZE ENGINE LAMIISJRTIQNS O 1 BALSA SIft / ARE YOU SURE THIS STAt Wy BET WINTER GOT STAITED UNCLE 5INER FA*$ &15T FEW. lINUrF~ z-zz-z 5 STRIPS A SRS BALSA ~BALSA3 7 3A2 BALSA RIB5 6 BALSA SIlTA/I 4 A4 PRUCE SLSA SMT ERLSA PLANKING BALSA RIBS xX SPRUCE- SPAR IAMW - PD RIB LAMINATED XZDIA MW4 DIR PNEUMATIC LSA Si-IT 32 BALSA SAT Full Size Plans Available-See Page 160 joints except temporary top longeron Keep fuselage anchored place As position firewall slip LG platform slots back firewall BH 2 used 45-minute epoxy gave enough time accurately align firewall no offset epoxy has cured add triangular bracing gussets firewall BH 2 Servo rails can added time Remove fuselage admire Planking Here fun begins Use 1/8 x a strips Start strip over longeron alternate two strips either side side longerons After five six strips side add about same number top bottom balanced approach will prevent fuselage being pulled out shape used Sig-Ment between strips CyA attach strips bulkheads fairly large sanding block needed achieve smooth finish fill low spots Model Magic Omit planking strip side pylon slot Fill after WCS/pylon assembly epoxied fuselage Access Hatch Install cement end formers 3A 6A shim 1A2 balsa scraps simplify removal later same applies hatch top rails fuselage planking finished sanded saw hatch fuselage Begin sawing vertical gap between BHs hatch formers after two three planking strips place cement set keeps sawing gap accessible keeps becoming clogged cement saw topmost planking strips time help hold hatch firmly place until completely separated fuselage Keep horizontal gap between hatch fuselage accessible sawing hatch finally separated fuselage piece planking missing area either fuselage and/or hatch Remove hatch after fuselage planked sanded shape Add A2 balsa sheet ends hatch formers top rails compensate 1/32 gap built sawing Sand snug fit Cowl construction details 1 finished walls should least -inch thick 2 Cut some wood out middle balsa ovals before epoxying together Cement F oval cowl after finished 20 Model Aviation NTOP VIEW /S/N\ _ \FUSELAGE / TON-V __ 7 ILARDING GEAR PATTERNSPIN BLOCK PATTERNS J~NSSY~N5NN55Y5 NON NNNNNNN MODEL AVIATION K C CLIPPER ____________FUSELAGE SIDE VIEW AOIROIJLNIVOVASON BOVAWO BY BILL MURRAY Outer wing panels after final sanding Aluminum tee-bar sanders used achieve consistent taper Wing center sectionlpylon has installed streamlining pieces have added Model Magic fills gaps WING PLAN CENTER SECTION / INNER INS PL iLjitN ____________________________________________________________[v32][b1179648143300]]__ t ___ GHT WING PANEL___ IWN - SN ______________ NINS~ AZ LEFTNO 3 When cowl has sanded shape faired fuselage cut half thrustline found easier finish sanding inside after cut 4 Check fit engine mounted make sure throttle arm can move full-range fit satisfactory keep bottom place cut fit F oval epoxy pin place cured sand shape 5 Inlay 1/16 plywood wood screws used hold cowling place 6 Brush several coats thinned epoxy inside EMPENNAGE CONSTRUCTION Cement tip pieces leading trailing edges flat building board shim up cement tip pieces spars Cement fairing pieces TE fuselage after empennage permanently installed Tack spars together light spots aliphatic-resin glue Put removable sheet balsa scraps center slot stabilizer size fin/rudder keel sure center ribs perpendicular building board Pop spars apart after sanding saw rear spar elevators install elevator horn epoxy center section stabilizer Carve fit fuselage tail section block drill hole rudder linkage Remember make block oversize joins BH 13A Dry-fit stabilizer gold rod attached elevator horn Check incidence adjust saddle necessary Dry-fit remaining components pin place Connect gold rod rudder horn Check smooth movement elevator rudder hand-operating gold rods servo area used 45-minute epoxy install empennage First attach z-bend elevator horn gold rod its blue sheath move stab/elevator toward its saddle onto put carved tail section place Slip fin/rudder keel through slot until firmly position Recheck fit empennage components pin place let cure overnight Sub-Fin Carbon Fibers Epoxy sub-fin place carbon-fiber tape hand thought little high-tech stuff might helpful put tape longerons added strength believe optional because planked fuselage exceptionally strong PYLON/WING CENTER SECTION CONSTRUCTION Ink locations pylon rib outline its lateral center line line representing top top longeron November 1993 21 RIR ANE L IK C CLIPPER INNER WINO PANEL DETAIL Skeleton view after planking has begun Balanced application fuselage shell has planked cowl shaping has planking strips helps fuselage retain correct shape begun Additional planking added after pylon mounted Full Size Available-See Pagel6O s-I3-2 --_ AK Kg3A OWE S-43 0 SIDE FRONT VIEW ii --1-- 4 aF- II- TOP VIEW OR K C CLIPPER CrAILCCCOCWC BC BILL COJARAC 00*0106 BC ACE ODARBOC BC 1 STAWI IZER vertical lines representing extended notches BHs 3 4 5 marks convenient checking built-in wing incidence fit pylon streamlining pieces must slotted fit over extended notches BHs dry-fitting pylon fuselage make certain fits snugly BH notches cuts rests top longeron Also see perpendicular crutch bottom parallel crutch Wing Center Section WCS ribs adjoining ribs inner panels same size Stack sand align size notches drill rod dowel holes etc Use t balsa removable scraps size pylon slot keep center ribs perpendicular building board No built-in tilts please WCS bottom spars end pylon slot pylon should project above rib line can slightly below used K&S wing rod package3/s rod /2 tube 12 inches long cut tube half segment inner wing panel Music wire brass tubing used back WING PANEL CONSTRUCTION Evenly tapered wing ribs require persistent sanding remove high areas scraps balsa will fill low spots used 32-inch aluminum sander similar tee bar attained excellent taper lines applies fuselage bulkheads well wanted easy way establish consistent depth trailing edges rib capstripping /32 capstrips wing ribs CyAed 3/32-square balsa strip bottom TE serve jig rib placement Use /16-square balsa strips /6 capstrips specified did remove jig strips Because ribs different lengths inaccuracies could creep therefore cut ribs slightly long back sanded fit point eyeballed vertical size rib met TE sanded adjustments inner wing panel IWP tapers slightly narrows about half inch makes length airfoil rib little smaller going center section rib 9 airfoil difference about width pencil line rib pattern plan illustrates mind used following procedure cut size ribs 1 Cut out notch ribs 1 thru 8 using IWP rib 0 pattern same size center section ribs Ink centerline rib 2 Trim rib length number 3 Make rib 9 plan pattern ink centerline Engine size type ASP 61 Number RC channels Three Expected flying weight Nine pounds Type construction Built-up Covering/finish Fiberlike iron-on Super Poxy 22 Model Aviation RC Sport Wingspan 96 inches Waiting its turn Texas flight line Author Murray feels t interesting rewarding projects
Edition: Model Aviation - 1993/11
Page Numbers: 16, 17, 18, 19, 20, 21, 22
NO OCR TEXT saga Kansas City Clipper began early days modeling us Kansas City area successfully designing flying rubber-powered models late 1 920s early 1 930s very difficult afford new gas model engines Depression years managed get first Ohlssons designed built first gas model 1936 eightfoot wingspan powered new Ohlsson 60 some good flights first design disaster struck windy day Old Richards Field just outside Kansas CityOthers patiently stayed grounded flew headed straight wind lifted like express elevator about 150 feet suddenly nosed over came roaring straight down plowed total loss crankshaft new Ohlsson 60 bent wished waited better wind conditions others perhaps adjusted trim bit Too lateit gone Like mythical Phoenix Kansas City Clipper concept emerged shattered remains first gas-powered model Shortly after fatal crash design conceived made final drawings early 1937 three-views really looked goodit wasnt boxy like early designs planked oval-cross-section fuselage elliptical outer wing panels made some fairly difficult construction spite finished Kansas City Clipper 1937 covered silk clear doped black trim finished two coats Packard car cream lacquer model weighed just under six pounds repaired Ohlsson 60 provided sufficient power gentle climbs Stability excellent flights concluded good flat glide slope built wing three sections landing gear plugged made convenient packing shipping folks shipped model Burbank California gone 1938 complete aeronautical engineering studies Clippers last flight 1939 eyedropper gas should have used climbed its usual gentle angle headed southeast knew right away chase necessary buddy cranked up old Model followed best could lost sight continued general flight direction spotted crowd Sure enough Clipperit glided side garage no damage anything anyone except engine firewall bulkhead pushed back fuselage too bad things considered Kansas City Clipper later disassembled boxed shipped back folks attic Kansas City later went attic Falls Church Virginia restored 1988 offered AMA Museum now resides its original splendor Bill Murray Temple Texas will continue saga Kansas City Clipper tell rediscovered late 1989 became acquainted Keith late 1989 continued acquaintance letter phone exchanged photos models built Kansas City Clipperit struck fancy wanted very badly eye-catcher ahead its time didnt know time about start interesting rewarding projects have ever undertaken After seeing picture Kansas City Clipper phoned Keith told him just build leaning toward radio-controlled version told quarter-scale three-view drawing elated needed get started start did decided original lines remain essentially unchanged some construction changes would requiredmost notably movable control surfaces Another obvious requirement would access install service radio gear well fuel tank also wanted beef up fuselage withstand occasional bumpy landings None contemplated modifications would change models appearance airworthiness got started detailed full-size plans last ready get jewel underway beginners project Ill wager modelers can get Kansas City air will welcome change pace challenge doing something different GENERAL CONSTRUCTION NOTES used tracing paper copy parts plans attached tracings wood 3M spray adhesive paper peels off after cutting time parts should numbered otherwise identified could kit entire model before construction begins Adhesives used cyanocrylates CyA epoxies six- 45minute working times sandable aliphatic-resin glue Sig-Ment model airplane cement usual assortment tools employed Some favorites Zona saw has detachable 4/2-inch blade stiffener across top can ripsaw it just thing saw access hatch fuselage Straight pins sizes got yard-goods store little fine ones thin sharp rarely split small pieces balsa Rocket City Pin Clamps came handy too good stock single-edge razor blades #11 X-Acto blades always use sharp blade Strips laminating soaked ammonia water used aliphatic-resin glue bent strips around outline pins previously placed over plans strips pinned place allowed dry Leading edge curves sanded rough shape prior assembly Fuselage Jig Make jig blocks 2 x 4 scraps Cut six pieces six inches long ends must square will set end block up fuselage times during construction Since 2 x 4 actually measures 11/2 x 3/2 two fuselage jig blocks can double dihedral supports Cut 1/2 x la/s slot middle two blocks cement x balsa strip raise height 1 5A inchesjust right block inside wing panel up proper dihedral Cut five pieces 1 x 6 scrap 3/ plywood building aids used conjunction jig blocks prop up fuselage Photos show arrangement fuselage must blocked up crutch times during construction dry-fit various components top crutch side longerons thrust line should level check wing stabilizer incidence achieve put two 1 x 6 building aid sticks top crutch between bulkheads projected beyond fuselage enough put nine-inch carpenters level After leveling crutch checked incidence Robart meter FUSELAGE CONSTRUCTIONPRELIMINARY Bulkhead notches need sized accurately longerons should fit snugly facilitate fuselage assembly meet requirement made several notch sanders re hard balsa November1993 17 Completed model yet flown time photo Iron-on fiberlike covering used simulate silk covering original model K&B Super Poxy trim 2 hard balsa scraps about four five inches long Sand down bit compensate sandpaper thickness glue sandpaper three sides great job bulkheads nbs desired snug fits rewarding bulkheads sub-fin rib doublers cut Lite Ply Birch plywood used firewall pylon other plywood parts also used A2 /&4 plywood some places fuselage top bottom longerons cut shape balsa sheet continuous length both /2-inch deep fit bulkhead notches Control Linkages used Gold-N-Rods blue sheaths rudder elevator cable tubing throttle Before laminating firewall cut slot landing gear LG platform /8-inch plywood epoxy cures drill install blind nuts motor mount drill holes fuel lines throttle tubing Shim motor mount about two degrees right down thrust Finish LG supports including brass tubing Epoxy rear support trianglestock bracing BH 3 Epoxy front support LG platform Epoxy balsa stiffeners top BHs 34 5 Using BH pattern outline reinforcement area ood Cut epoxy doublers both sides BHs 4 5 Using BHs 3 6 patterns outline hatch formers 3A 6A /s Lite Ply cut sand exact match lay aside Pin top bottom longerons over plan mark number BH location sides tops Remove Make fuselage crutch side longerons temporary crosspieces pinning re hard balsa strips over top view fuselage Make vertical razor saw cuts longerons bend inward BH 8 weaken bit will bend easier bulge beyond point Force epoxy cut restrengthen Fit longerons rear CyA Cement re balsa crosspieces just behind firewall BH 4 front BH 8 Remove after fuselage built Mark number BH location side top both longerons Removeit should hold its shape FUSELAGE ASSEMBLY Begin hand-holding tee crutch dry-fitting BHs 2 through 1 3A firewall added later crutch longerons parallel firewall BH 8 Beyond BH 8 longerons taper easier slip BHs through crutch engage notches longerons slide back marked positions half-BHs beyond BH 1 3A added later Trial-fit top longeron mporary longeron required maintain BH alignment top front firewall through BH5 pylon eventually goes now have top longeron firewall BH 13A Place assembly top-side-down over plans Put 2 x 4 jig fuselage top view just behind firewall slot straddling fuselage centerline Put other jig between BHs 7 8 positioning same way Remove top longerons lay crutch jigs top next plans replace top longerons jig slots straddling sure BHs marked positions permanent top longeron Anchor jigs align crutch top view fuselage pin jigs Put 2 x 4 blocks side crutch between BHs 12 13 push until top longeron sandwiched Check fuselage alignment plans anchor blocks crutch fuselage now should firmly place bottom-side up worst over Align BHs perpendicular crutch Put half-BHs 14 through 16 place dry-fit bottom longeron everything place its time CyA 18 Model Aviation nnage wing center section have oeen ary-TIT ai mis point Note use jigs support align fuselage Empennage components saddle pieces fuselage stabl elevator platform Hatch formers rails background Positioners support front wing rod tubing can seen view inner wing panels Backs side longerons have received 1/4-inch-square balsa between bulkheads part fuselage beef-up process KC Clipper N // N N BALSA GUSSETS - LSRSTRIBS SA SPARS 61 SIZE ENGINE LAMIISJRTIQNS O 1 BALSA SIft / ARE YOU SURE THIS STAt Wy BET WINTER GOT STAITED UNCLE 5INER FA*$ &15T FEW. lINUrF~ z-zz-z 5 STRIPS A SRS BALSA ~BALSA3 7 3A2 BALSA RIB5 6 BALSA SIlTA/I 4 A4 PRUCE SLSA SMT ERLSA PLANKING BALSA RIBS xX SPRUCE- SPAR IAMW - PD RIB LAMINATED XZDIA MW4 DIR PNEUMATIC LSA Si-IT 32 BALSA SAT Full Size Plans Available-See Page 160 joints except temporary top longeron Keep fuselage anchored place As position firewall slip LG platform slots back firewall BH 2 used 45-minute epoxy gave enough time accurately align firewall no offset epoxy has cured add triangular bracing gussets firewall BH 2 Servo rails can added time Remove fuselage admire Planking Here fun begins Use 1/8 x a strips Start strip over longeron alternate two strips either side side longerons After five six strips side add about same number top bottom balanced approach will prevent fuselage being pulled out shape used Sig-Ment between strips CyA attach strips bulkheads fairly large sanding block needed achieve smooth finish fill low spots Model Magic Omit planking strip side pylon slot Fill after WCS/pylon assembly epoxied fuselage Access Hatch Install cement end formers 3A 6A shim 1A2 balsa scraps simplify removal later same applies hatch top rails fuselage planking finished sanded saw hatch fuselage Begin sawing vertical gap between BHs hatch formers after two three planking strips place cement set keeps sawing gap accessible keeps becoming clogged cement saw topmost planking strips time help hold hatch firmly place until completely separated fuselage Keep horizontal gap between hatch fuselage accessible sawing hatch finally separated fuselage piece planking missing area either fuselage and/or hatch Remove hatch after fuselage planked sanded shape Add A2 balsa sheet ends hatch formers top rails compensate 1/32 gap built sawing Sand snug fit Cowl construction details 1 finished walls should least -inch thick 2 Cut some wood out middle balsa ovals before epoxying together Cement F oval cowl after finished 20 Model Aviation NTOP VIEW /S/N\ _ \FUSELAGE / TON-V __ 7 ILARDING GEAR PATTERNSPIN BLOCK PATTERNS J~NSSY~N5NN55Y5 NON NNNNNNN MODEL AVIATION K C CLIPPER ____________FUSELAGE SIDE VIEW AOIROIJLNIVOVASON BOVAWO BY BILL MURRAY Outer wing panels after final sanding Aluminum tee-bar sanders used achieve consistent taper Wing center sectionlpylon has installed streamlining pieces have added Model Magic fills gaps WING PLAN CENTER SECTION / INNER INS PL iLjitN ____________________________________________________________[v32][b1179648143300]]__ t ___ GHT WING PANEL___ IWN - SN ______________ NINS~ AZ LEFTNO 3 When cowl has sanded shape faired fuselage cut half thrustline found easier finish sanding inside after cut 4 Check fit engine mounted make sure throttle arm can move full-range fit satisfactory keep bottom place cut fit F oval epoxy pin place cured sand shape 5 Inlay 1/16 plywood wood screws used hold cowling place 6 Brush several coats thinned epoxy inside EMPENNAGE CONSTRUCTION Cement tip pieces leading trailing edges flat building board shim up cement tip pieces spars Cement fairing pieces TE fuselage after empennage permanently installed Tack spars together light spots aliphatic-resin glue Put removable sheet balsa scraps center slot stabilizer size fin/rudder keel sure center ribs perpendicular building board Pop spars apart after sanding saw rear spar elevators install elevator horn epoxy center section stabilizer Carve fit fuselage tail section block drill hole rudder linkage Remember make block oversize joins BH 13A Dry-fit stabilizer gold rod attached elevator horn Check incidence adjust saddle necessary Dry-fit remaining components pin place Connect gold rod rudder horn Check smooth movement elevator rudder hand-operating gold rods servo area used 45-minute epoxy install empennage First attach z-bend elevator horn gold rod its blue sheath move stab/elevator toward its saddle onto put carved tail section place Slip fin/rudder keel through slot until firmly position Recheck fit empennage components pin place let cure overnight Sub-Fin Carbon Fibers Epoxy sub-fin place carbon-fiber tape hand thought little high-tech stuff might helpful put tape longerons added strength believe optional because planked fuselage exceptionally strong PYLON/WING CENTER SECTION CONSTRUCTION Ink locations pylon rib outline its lateral center line line representing top top longeron November 1993 21 RIR ANE L IK C CLIPPER INNER WINO PANEL DETAIL Skeleton view after planking has begun Balanced application fuselage shell has planked cowl shaping has planking strips helps fuselage retain correct shape begun Additional planking added after pylon mounted Full Size Available-See Pagel6O s-I3-2 --_ AK Kg3A OWE S-43 0 SIDE FRONT VIEW ii --1-- 4 aF- II- TOP VIEW OR K C CLIPPER CrAILCCCOCWC BC BILL COJARAC 00*0106 BC ACE ODARBOC BC 1 STAWI IZER vertical lines representing extended notches BHs 3 4 5 marks convenient checking built-in wing incidence fit pylon streamlining pieces must slotted fit over extended notches BHs dry-fitting pylon fuselage make certain fits snugly BH notches cuts rests top longeron Also see perpendicular crutch bottom parallel crutch Wing Center Section WCS ribs adjoining ribs inner panels same size Stack sand align size notches drill rod dowel holes etc Use t balsa removable scraps size pylon slot keep center ribs perpendicular building board No built-in tilts please WCS bottom spars end pylon slot pylon should project above rib line can slightly below used K&S wing rod package3/s rod /2 tube 12 inches long cut tube half segment inner wing panel Music wire brass tubing used back WING PANEL CONSTRUCTION Evenly tapered wing ribs require persistent sanding remove high areas scraps balsa will fill low spots used 32-inch aluminum sander similar tee bar attained excellent taper lines applies fuselage bulkheads well wanted easy way establish consistent depth trailing edges rib capstripping /32 capstrips wing ribs CyAed 3/32-square balsa strip bottom TE serve jig rib placement Use /16-square balsa strips /6 capstrips specified did remove jig strips Because ribs different lengths inaccuracies could creep therefore cut ribs slightly long back sanded fit point eyeballed vertical size rib met TE sanded adjustments inner wing panel IWP tapers slightly narrows about half inch makes length airfoil rib little smaller going center section rib 9 airfoil difference about width pencil line rib pattern plan illustrates mind used following procedure cut size ribs 1 Cut out notch ribs 1 thru 8 using IWP rib 0 pattern same size center section ribs Ink centerline rib 2 Trim rib length number 3 Make rib 9 plan pattern ink centerline Engine size type ASP 61 Number RC channels Three Expected flying weight Nine pounds Type construction Built-up Covering/finish Fiberlike iron-on Super Poxy 22 Model Aviation RC Sport Wingspan 96 inches Waiting its turn Texas flight line Author Murray feels t interesting rewarding projects
Edition: Model Aviation - 1993/11
Page Numbers: 16, 17, 18, 19, 20, 21, 22
NO OCR TEXT saga Kansas City Clipper began early days modeling us Kansas City area successfully designing flying rubber-powered models late 1 920s early 1 930s very difficult afford new gas model engines Depression years managed get first Ohlssons designed built first gas model 1936 eightfoot wingspan powered new Ohlsson 60 some good flights first design disaster struck windy day Old Richards Field just outside Kansas CityOthers patiently stayed grounded flew headed straight wind lifted like express elevator about 150 feet suddenly nosed over came roaring straight down plowed total loss crankshaft new Ohlsson 60 bent wished waited better wind conditions others perhaps adjusted trim bit Too lateit gone Like mythical Phoenix Kansas City Clipper concept emerged shattered remains first gas-powered model Shortly after fatal crash design conceived made final drawings early 1937 three-views really looked goodit wasnt boxy like early designs planked oval-cross-section fuselage elliptical outer wing panels made some fairly difficult construction spite finished Kansas City Clipper 1937 covered silk clear doped black trim finished two coats Packard car cream lacquer model weighed just under six pounds repaired Ohlsson 60 provided sufficient power gentle climbs Stability excellent flights concluded good flat glide slope built wing three sections landing gear plugged made convenient packing shipping folks shipped model Burbank California gone 1938 complete aeronautical engineering studies Clippers last flight 1939 eyedropper gas should have used climbed its usual gentle angle headed southeast knew right away chase necessary buddy cranked up old Model followed best could lost sight continued general flight direction spotted crowd Sure enough Clipperit glided side garage no damage anything anyone except engine firewall bulkhead pushed back fuselage too bad things considered Kansas City Clipper later disassembled boxed shipped back folks attic Kansas City later went attic Falls Church Virginia restored 1988 offered AMA Museum now resides its original splendor Bill Murray Temple Texas will continue saga Kansas City Clipper tell rediscovered late 1989 became acquainted Keith late 1989 continued acquaintance letter phone exchanged photos models built Kansas City Clipperit struck fancy wanted very badly eye-catcher ahead its time didnt know time about start interesting rewarding projects have ever undertaken After seeing picture Kansas City Clipper phoned Keith told him just build leaning toward radio-controlled version told quarter-scale three-view drawing elated needed get started start did decided original lines remain essentially unchanged some construction changes would requiredmost notably movable control surfaces Another obvious requirement would access install service radio gear well fuel tank also wanted beef up fuselage withstand occasional bumpy landings None contemplated modifications would change models appearance airworthiness got started detailed full-size plans last ready get jewel underway beginners project Ill wager modelers can get Kansas City air will welcome change pace challenge doing something different GENERAL CONSTRUCTION NOTES used tracing paper copy parts plans attached tracings wood 3M spray adhesive paper peels off after cutting time parts should numbered otherwise identified could kit entire model before construction begins Adhesives used cyanocrylates CyA epoxies six- 45minute working times sandable aliphatic-resin glue Sig-Ment model airplane cement usual assortment tools employed Some favorites Zona saw has detachable 4/2-inch blade stiffener across top can ripsaw it just thing saw access hatch fuselage Straight pins sizes got yard-goods store little fine ones thin sharp rarely split small pieces balsa Rocket City Pin Clamps came handy too good stock single-edge razor blades #11 X-Acto blades always use sharp blade Strips laminating soaked ammonia water used aliphatic-resin glue bent strips around outline pins previously placed over plans strips pinned place allowed dry Leading edge curves sanded rough shape prior assembly Fuselage Jig Make jig blocks 2 x 4 scraps Cut six pieces six inches long ends must square will set end block up fuselage times during construction Since 2 x 4 actually measures 11/2 x 3/2 two fuselage jig blocks can double dihedral supports Cut 1/2 x la/s slot middle two blocks cement x balsa strip raise height 1 5A inchesjust right block inside wing panel up proper dihedral Cut five pieces 1 x 6 scrap 3/ plywood building aids used conjunction jig blocks prop up fuselage Photos show arrangement fuselage must blocked up crutch times during construction dry-fit various components top crutch side longerons thrust line should level check wing stabilizer incidence achieve put two 1 x 6 building aid sticks top crutch between bulkheads projected beyond fuselage enough put nine-inch carpenters level After leveling crutch checked incidence Robart meter FUSELAGE CONSTRUCTIONPRELIMINARY Bulkhead notches need sized accurately longerons should fit snugly facilitate fuselage assembly meet requirement made several notch sanders re hard balsa November1993 17 Completed model yet flown time photo Iron-on fiberlike covering used simulate silk covering original model K&B Super Poxy trim 2 hard balsa scraps about four five inches long Sand down bit compensate sandpaper thickness glue sandpaper three sides great job bulkheads nbs desired snug fits rewarding bulkheads sub-fin rib doublers cut Lite Ply Birch plywood used firewall pylon other plywood parts also used A2 /&4 plywood some places fuselage top bottom longerons cut shape balsa sheet continuous length both /2-inch deep fit bulkhead notches Control Linkages used Gold-N-Rods blue sheaths rudder elevator cable tubing throttle Before laminating firewall cut slot landing gear LG platform /8-inch plywood epoxy cures drill install blind nuts motor mount drill holes fuel lines throttle tubing Shim motor mount about two degrees right down thrust Finish LG supports including brass tubing Epoxy rear support trianglestock bracing BH 3 Epoxy front support LG platform Epoxy balsa stiffeners top BHs 34 5 Using BH pattern outline reinforcement area ood Cut epoxy doublers both sides BHs 4 5 Using BHs 3 6 patterns outline hatch formers 3A 6A /s Lite Ply cut sand exact match lay aside Pin top bottom longerons over plan mark number BH location sides tops Remove Make fuselage crutch side longerons temporary crosspieces pinning re hard balsa strips over top view fuselage Make vertical razor saw cuts longerons bend inward BH 8 weaken bit will bend easier bulge beyond point Force epoxy cut restrengthen Fit longerons rear CyA Cement re balsa crosspieces just behind firewall BH 4 front BH 8 Remove after fuselage built Mark number BH location side top both longerons Removeit should hold its shape FUSELAGE ASSEMBLY Begin hand-holding tee crutch dry-fitting BHs 2 through 1 3A firewall added later crutch longerons parallel firewall BH 8 Beyond BH 8 longerons taper easier slip BHs through crutch engage notches longerons slide back marked positions half-BHs beyond BH 1 3A added later Trial-fit top longeron mporary longeron required maintain BH alignment top front firewall through BH5 pylon eventually goes now have top longeron firewall BH 13A Place assembly top-side-down over plans Put 2 x 4 jig fuselage top view just behind firewall slot straddling fuselage centerline Put other jig between BHs 7 8 positioning same way Remove top longerons lay crutch jigs top next plans replace top longerons jig slots straddling sure BHs marked positions permanent top longeron Anchor jigs align crutch top view fuselage pin jigs Put 2 x 4 blocks side crutch between BHs 12 13 push until top longeron sandwiched Check fuselage alignment plans anchor blocks crutch fuselage now should firmly place bottom-side up worst over Align BHs perpendicular crutch Put half-BHs 14 through 16 place dry-fit bottom longeron everything place its time CyA 18 Model Aviation nnage wing center section have oeen ary-TIT ai mis point Note use jigs support align fuselage Empennage components saddle pieces fuselage stabl elevator platform Hatch formers rails background Positioners support front wing rod tubing can seen view inner wing panels Backs side longerons have received 1/4-inch-square balsa between bulkheads part fuselage beef-up process KC Clipper N // N N BALSA GUSSETS - LSRSTRIBS SA SPARS 61 SIZE ENGINE LAMIISJRTIQNS O 1 BALSA SIft / ARE YOU SURE THIS STAt Wy BET WINTER GOT STAITED UNCLE 5INER FA*$ &15T FEW. lINUrF~ z-zz-z 5 STRIPS A SRS BALSA ~BALSA3 7 3A2 BALSA RIB5 6 BALSA SIlTA/I 4 A4 PRUCE SLSA SMT ERLSA PLANKING BALSA RIBS xX SPRUCE- SPAR IAMW - PD RIB LAMINATED XZDIA MW4 DIR PNEUMATIC LSA Si-IT 32 BALSA SAT Full Size Plans Available-See Page 160 joints except temporary top longeron Keep fuselage anchored place As position firewall slip LG platform slots back firewall BH 2 used 45-minute epoxy gave enough time accurately align firewall no offset epoxy has cured add triangular bracing gussets firewall BH 2 Servo rails can added time Remove fuselage admire Planking Here fun begins Use 1/8 x a strips Start strip over longeron alternate two strips either side side longerons After five six strips side add about same number top bottom balanced approach will prevent fuselage being pulled out shape used Sig-Ment between strips CyA attach strips bulkheads fairly large sanding block needed achieve smooth finish fill low spots Model Magic Omit planking strip side pylon slot Fill after WCS/pylon assembly epoxied fuselage Access Hatch Install cement end formers 3A 6A shim 1A2 balsa scraps simplify removal later same applies hatch top rails fuselage planking finished sanded saw hatch fuselage Begin sawing vertical gap between BHs hatch formers after two three planking strips place cement set keeps sawing gap accessible keeps becoming clogged cement saw topmost planking strips time help hold hatch firmly place until completely separated fuselage Keep horizontal gap between hatch fuselage accessible sawing hatch finally separated fuselage piece planking missing area either fuselage and/or hatch Remove hatch after fuselage planked sanded shape Add A2 balsa sheet ends hatch formers top rails compensate 1/32 gap built sawing Sand snug fit Cowl construction details 1 finished walls should least -inch thick 2 Cut some wood out middle balsa ovals before epoxying together Cement F oval cowl after finished 20 Model Aviation NTOP VIEW /S/N\ _ \FUSELAGE / TON-V __ 7 ILARDING GEAR PATTERNSPIN BLOCK PATTERNS J~NSSY~N5NN55Y5 NON NNNNNNN MODEL AVIATION K C CLIPPER ____________FUSELAGE SIDE VIEW AOIROIJLNIVOVASON BOVAWO BY BILL MURRAY Outer wing panels after final sanding Aluminum tee-bar sanders used achieve consistent taper Wing center sectionlpylon has installed streamlining pieces have added Model Magic fills gaps WING PLAN CENTER SECTION / INNER INS PL iLjitN ____________________________________________________________[v32][b1179648143300]]__ t ___ GHT WING PANEL___ IWN - SN ______________ NINS~ AZ LEFTNO 3 When cowl has sanded shape faired fuselage cut half thrustline found easier finish sanding inside after cut 4 Check fit engine mounted make sure throttle arm can move full-range fit satisfactory keep bottom place cut fit F oval epoxy pin place cured sand shape 5 Inlay 1/16 plywood wood screws used hold cowling place 6 Brush several coats thinned epoxy inside EMPENNAGE CONSTRUCTION Cement tip pieces leading trailing edges flat building board shim up cement tip pieces spars Cement fairing pieces TE fuselage after empennage permanently installed Tack spars together light spots aliphatic-resin glue Put removable sheet balsa scraps center slot stabilizer size fin/rudder keel sure center ribs perpendicular building board Pop spars apart after sanding saw rear spar elevators install elevator horn epoxy center section stabilizer Carve fit fuselage tail section block drill hole rudder linkage Remember make block oversize joins BH 13A Dry-fit stabilizer gold rod attached elevator horn Check incidence adjust saddle necessary Dry-fit remaining components pin place Connect gold rod rudder horn Check smooth movement elevator rudder hand-operating gold rods servo area used 45-minute epoxy install empennage First attach z-bend elevator horn gold rod its blue sheath move stab/elevator toward its saddle onto put carved tail section place Slip fin/rudder keel through slot until firmly position Recheck fit empennage components pin place let cure overnight Sub-Fin Carbon Fibers Epoxy sub-fin place carbon-fiber tape hand thought little high-tech stuff might helpful put tape longerons added strength believe optional because planked fuselage exceptionally strong PYLON/WING CENTER SECTION CONSTRUCTION Ink locations pylon rib outline its lateral center line line representing top top longeron November 1993 21 RIR ANE L IK C CLIPPER INNER WINO PANEL DETAIL Skeleton view after planking has begun Balanced application fuselage shell has planked cowl shaping has planking strips helps fuselage retain correct shape begun Additional planking added after pylon mounted Full Size Available-See Pagel6O s-I3-2 --_ AK Kg3A OWE S-43 0 SIDE FRONT VIEW ii --1-- 4 aF- II- TOP VIEW OR K C CLIPPER CrAILCCCOCWC BC BILL COJARAC 00*0106 BC ACE ODARBOC BC 1 STAWI IZER vertical lines representing extended notches BHs 3 4 5 marks convenient checking built-in wing incidence fit pylon streamlining pieces must slotted fit over extended notches BHs dry-fitting pylon fuselage make certain fits snugly BH notches cuts rests top longeron Also see perpendicular crutch bottom parallel crutch Wing Center Section WCS ribs adjoining ribs inner panels same size Stack sand align size notches drill rod dowel holes etc Use t balsa removable scraps size pylon slot keep center ribs perpendicular building board No built-in tilts please WCS bottom spars end pylon slot pylon should project above rib line can slightly below used K&S wing rod package3/s rod /2 tube 12 inches long cut tube half segment inner wing panel Music wire brass tubing used back WING PANEL CONSTRUCTION Evenly tapered wing ribs require persistent sanding remove high areas scraps balsa will fill low spots used 32-inch aluminum sander similar tee bar attained excellent taper lines applies fuselage bulkheads well wanted easy way establish consistent depth trailing edges rib capstripping /32 capstrips wing ribs CyAed 3/32-square balsa strip bottom TE serve jig rib placement Use /16-square balsa strips /6 capstrips specified did remove jig strips Because ribs different lengths inaccuracies could creep therefore cut ribs slightly long back sanded fit point eyeballed vertical size rib met TE sanded adjustments inner wing panel IWP tapers slightly narrows about half inch makes length airfoil rib little smaller going center section rib 9 airfoil difference about width pencil line rib pattern plan illustrates mind used following procedure cut size ribs 1 Cut out notch ribs 1 thru 8 using IWP rib 0 pattern same size center section ribs Ink centerline rib 2 Trim rib length number 3 Make rib 9 plan pattern ink centerline Engine size type ASP 61 Number RC channels Three Expected flying weight Nine pounds Type construction Built-up Covering/finish Fiberlike iron-on Super Poxy 22 Model Aviation RC Sport Wingspan 96 inches Waiting its turn Texas flight line Author Murray feels t interesting rewarding projects
Edition: Model Aviation - 1993/11
Page Numbers: 16, 17, 18, 19, 20, 21, 22
NO OCR TEXT saga Kansas City Clipper began early days modeling us Kansas City area successfully designing flying rubber-powered models late 1 920s early 1 930s very difficult afford new gas model engines Depression years managed get first Ohlssons designed built first gas model 1936 eightfoot wingspan powered new Ohlsson 60 some good flights first design disaster struck windy day Old Richards Field just outside Kansas CityOthers patiently stayed grounded flew headed straight wind lifted like express elevator about 150 feet suddenly nosed over came roaring straight down plowed total loss crankshaft new Ohlsson 60 bent wished waited better wind conditions others perhaps adjusted trim bit Too lateit gone Like mythical Phoenix Kansas City Clipper concept emerged shattered remains first gas-powered model Shortly after fatal crash design conceived made final drawings early 1937 three-views really looked goodit wasnt boxy like early designs planked oval-cross-section fuselage elliptical outer wing panels made some fairly difficult construction spite finished Kansas City Clipper 1937 covered silk clear doped black trim finished two coats Packard car cream lacquer model weighed just under six pounds repaired Ohlsson 60 provided sufficient power gentle climbs Stability excellent flights concluded good flat glide slope built wing three sections landing gear plugged made convenient packing shipping folks shipped model Burbank California gone 1938 complete aeronautical engineering studies Clippers last flight 1939 eyedropper gas should have used climbed its usual gentle angle headed southeast knew right away chase necessary buddy cranked up old Model followed best could lost sight continued general flight direction spotted crowd Sure enough Clipperit glided side garage no damage anything anyone except engine firewall bulkhead pushed back fuselage too bad things considered Kansas City Clipper later disassembled boxed shipped back folks attic Kansas City later went attic Falls Church Virginia restored 1988 offered AMA Museum now resides its original splendor Bill Murray Temple Texas will continue saga Kansas City Clipper tell rediscovered late 1989 became acquainted Keith late 1989 continued acquaintance letter phone exchanged photos models built Kansas City Clipperit struck fancy wanted very badly eye-catcher ahead its time didnt know time about start interesting rewarding projects have ever undertaken After seeing picture Kansas City Clipper phoned Keith told him just build leaning toward radio-controlled version told quarter-scale three-view drawing elated needed get started start did decided original lines remain essentially unchanged some construction changes would requiredmost notably movable control surfaces Another obvious requirement would access install service radio gear well fuel tank also wanted beef up fuselage withstand occasional bumpy landings None contemplated modifications would change models appearance airworthiness got started detailed full-size plans last ready get jewel underway beginners project Ill wager modelers can get Kansas City air will welcome change pace challenge doing something different GENERAL CONSTRUCTION NOTES used tracing paper copy parts plans attached tracings wood 3M spray adhesive paper peels off after cutting time parts should numbered otherwise identified could kit entire model before construction begins Adhesives used cyanocrylates CyA epoxies six- 45minute working times sandable aliphatic-resin glue Sig-Ment model airplane cement usual assortment tools employed Some favorites Zona saw has detachable 4/2-inch blade stiffener across top can ripsaw it just thing saw access hatch fuselage Straight pins sizes got yard-goods store little fine ones thin sharp rarely split small pieces balsa Rocket City Pin Clamps came handy too good stock single-edge razor blades #11 X-Acto blades always use sharp blade Strips laminating soaked ammonia water used aliphatic-resin glue bent strips around outline pins previously placed over plans strips pinned place allowed dry Leading edge curves sanded rough shape prior assembly Fuselage Jig Make jig blocks 2 x 4 scraps Cut six pieces six inches long ends must square will set end block up fuselage times during construction Since 2 x 4 actually measures 11/2 x 3/2 two fuselage jig blocks can double dihedral supports Cut 1/2 x la/s slot middle two blocks cement x balsa strip raise height 1 5A inchesjust right block inside wing panel up proper dihedral Cut five pieces 1 x 6 scrap 3/ plywood building aids used conjunction jig blocks prop up fuselage Photos show arrangement fuselage must blocked up crutch times during construction dry-fit various components top crutch side longerons thrust line should level check wing stabilizer incidence achieve put two 1 x 6 building aid sticks top crutch between bulkheads projected beyond fuselage enough put nine-inch carpenters level After leveling crutch checked incidence Robart meter FUSELAGE CONSTRUCTIONPRELIMINARY Bulkhead notches need sized accurately longerons should fit snugly facilitate fuselage assembly meet requirement made several notch sanders re hard balsa November1993 17 Completed model yet flown time photo Iron-on fiberlike covering used simulate silk covering original model K&B Super Poxy trim 2 hard balsa scraps about four five inches long Sand down bit compensate sandpaper thickness glue sandpaper three sides great job bulkheads nbs desired snug fits rewarding bulkheads sub-fin rib doublers cut Lite Ply Birch plywood used firewall pylon other plywood parts also used A2 /&4 plywood some places fuselage top bottom longerons cut shape balsa sheet continuous length both /2-inch deep fit bulkhead notches Control Linkages used Gold-N-Rods blue sheaths rudder elevator cable tubing throttle Before laminating firewall cut slot landing gear LG platform /8-inch plywood epoxy cures drill install blind nuts motor mount drill holes fuel lines throttle tubing Shim motor mount about two degrees right down thrust Finish LG supports including brass tubing Epoxy rear support trianglestock bracing BH 3 Epoxy front support LG platform Epoxy balsa stiffeners top BHs 34 5 Using BH pattern outline reinforcement area ood Cut epoxy doublers both sides BHs 4 5 Using BHs 3 6 patterns outline hatch formers 3A 6A /s Lite Ply cut sand exact match lay aside Pin top bottom longerons over plan mark number BH location sides tops Remove Make fuselage crutch side longerons temporary crosspieces pinning re hard balsa strips over top view fuselage Make vertical razor saw cuts longerons bend inward BH 8 weaken bit will bend easier bulge beyond point Force epoxy cut restrengthen Fit longerons rear CyA Cement re balsa crosspieces just behind firewall BH 4 front BH 8 Remove after fuselage built Mark number BH location side top both longerons Removeit should hold its shape FUSELAGE ASSEMBLY Begin hand-holding tee crutch dry-fitting BHs 2 through 1 3A firewall added later crutch longerons parallel firewall BH 8 Beyond BH 8 longerons taper easier slip BHs through crutch engage notches longerons slide back marked positions half-BHs beyond BH 1 3A added later Trial-fit top longeron mporary longeron required maintain BH alignment top front firewall through BH5 pylon eventually goes now have top longeron firewall BH 13A Place assembly top-side-down over plans Put 2 x 4 jig fuselage top view just behind firewall slot straddling fuselage centerline Put other jig between BHs 7 8 positioning same way Remove top longerons lay crutch jigs top next plans replace top longerons jig slots straddling sure BHs marked positions permanent top longeron Anchor jigs align crutch top view fuselage pin jigs Put 2 x 4 blocks side crutch between BHs 12 13 push until top longeron sandwiched Check fuselage alignment plans anchor blocks crutch fuselage now should firmly place bottom-side up worst over Align BHs perpendicular crutch Put half-BHs 14 through 16 place dry-fit bottom longeron everything place its time CyA 18 Model Aviation nnage wing center section have oeen ary-TIT ai mis point Note use jigs support align fuselage Empennage components saddle pieces fuselage stabl elevator platform Hatch formers rails background Positioners support front wing rod tubing can seen view inner wing panels Backs side longerons have received 1/4-inch-square balsa between bulkheads part fuselage beef-up process KC Clipper N // N N BALSA GUSSETS - LSRSTRIBS SA SPARS 61 SIZE ENGINE LAMIISJRTIQNS O 1 BALSA SIft / ARE YOU SURE THIS STAt Wy BET WINTER GOT STAITED UNCLE 5INER FA*$ &15T FEW. lINUrF~ z-zz-z 5 STRIPS A SRS BALSA ~BALSA3 7 3A2 BALSA RIB5 6 BALSA SIlTA/I 4 A4 PRUCE SLSA SMT ERLSA PLANKING BALSA RIBS xX SPRUCE- SPAR IAMW - PD RIB LAMINATED XZDIA MW4 DIR PNEUMATIC LSA Si-IT 32 BALSA SAT Full Size Plans Available-See Page 160 joints except temporary top longeron Keep fuselage anchored place As position firewall slip LG platform slots back firewall BH 2 used 45-minute epoxy gave enough time accurately align firewall no offset epoxy has cured add triangular bracing gussets firewall BH 2 Servo rails can added time Remove fuselage admire Planking Here fun begins Use 1/8 x a strips Start strip over longeron alternate two strips either side side longerons After five six strips side add about same number top bottom balanced approach will prevent fuselage being pulled out shape used Sig-Ment between strips CyA attach strips bulkheads fairly large sanding block needed achieve smooth finish fill low spots Model Magic Omit planking strip side pylon slot Fill after WCS/pylon assembly epoxied fuselage Access Hatch Install cement end formers 3A 6A shim 1A2 balsa scraps simplify removal later same applies hatch top rails fuselage planking finished sanded saw hatch fuselage Begin sawing vertical gap between BHs hatch formers after two three planking strips place cement set keeps sawing gap accessible keeps becoming clogged cement saw topmost planking strips time help hold hatch firmly place until completely separated fuselage Keep horizontal gap between hatch fuselage accessible sawing hatch finally separated fuselage piece planking missing area either fuselage and/or hatch Remove hatch after fuselage planked sanded shape Add A2 balsa sheet ends hatch formers top rails compensate 1/32 gap built sawing Sand snug fit Cowl construction details 1 finished walls should least -inch thick 2 Cut some wood out middle balsa ovals before epoxying together Cement F oval cowl after finished 20 Model Aviation NTOP VIEW /S/N\ _ \FUSELAGE / TON-V __ 7 ILARDING GEAR PATTERNSPIN BLOCK PATTERNS J~NSSY~N5NN55Y5 NON NNNNNNN MODEL AVIATION K C CLIPPER ____________FUSELAGE SIDE VIEW AOIROIJLNIVOVASON BOVAWO BY BILL MURRAY Outer wing panels after final sanding Aluminum tee-bar sanders used achieve consistent taper Wing center sectionlpylon has installed streamlining pieces have added Model Magic fills gaps WING PLAN CENTER SECTION / INNER INS PL iLjitN ____________________________________________________________[v32][b1179648143300]]__ t ___ GHT WING PANEL___ IWN - SN ______________ NINS~ AZ LEFTNO 3 When cowl has sanded shape faired fuselage cut half thrustline found easier finish sanding inside after cut 4 Check fit engine mounted make sure throttle arm can move full-range fit satisfactory keep bottom place cut fit F oval epoxy pin place cured sand shape 5 Inlay 1/16 plywood wood screws used hold cowling place 6 Brush several coats thinned epoxy inside EMPENNAGE CONSTRUCTION Cement tip pieces leading trailing edges flat building board shim up cement tip pieces spars Cement fairing pieces TE fuselage after empennage permanently installed Tack spars together light spots aliphatic-resin glue Put removable sheet balsa scraps center slot stabilizer size fin/rudder keel sure center ribs perpendicular building board Pop spars apart after sanding saw rear spar elevators install elevator horn epoxy center section stabilizer Carve fit fuselage tail section block drill hole rudder linkage Remember make block oversize joins BH 13A Dry-fit stabilizer gold rod attached elevator horn Check incidence adjust saddle necessary Dry-fit remaining components pin place Connect gold rod rudder horn Check smooth movement elevator rudder hand-operating gold rods servo area used 45-minute epoxy install empennage First attach z-bend elevator horn gold rod its blue sheath move stab/elevator toward its saddle onto put carved tail section place Slip fin/rudder keel through slot until firmly position Recheck fit empennage components pin place let cure overnight Sub-Fin Carbon Fibers Epoxy sub-fin place carbon-fiber tape hand thought little high-tech stuff might helpful put tape longerons added strength believe optional because planked fuselage exceptionally strong PYLON/WING CENTER SECTION CONSTRUCTION Ink locations pylon rib outline its lateral center line line representing top top longeron November 1993 21 RIR ANE L IK C CLIPPER INNER WINO PANEL DETAIL Skeleton view after planking has begun Balanced application fuselage shell has planked cowl shaping has planking strips helps fuselage retain correct shape begun Additional planking added after pylon mounted Full Size Available-See Pagel6O s-I3-2 --_ AK Kg3A OWE S-43 0 SIDE FRONT VIEW ii --1-- 4 aF- II- TOP VIEW OR K C CLIPPER CrAILCCCOCWC BC BILL COJARAC 00*0106 BC ACE ODARBOC BC 1 STAWI IZER vertical lines representing extended notches BHs 3 4 5 marks convenient checking built-in wing incidence fit pylon streamlining pieces must slotted fit over extended notches BHs dry-fitting pylon fuselage make certain fits snugly BH notches cuts rests top longeron Also see perpendicular crutch bottom parallel crutch Wing Center Section WCS ribs adjoining ribs inner panels same size Stack sand align size notches drill rod dowel holes etc Use t balsa removable scraps size pylon slot keep center ribs perpendicular building board No built-in tilts please WCS bottom spars end pylon slot pylon should project above rib line can slightly below used K&S wing rod package3/s rod /2 tube 12 inches long cut tube half segment inner wing panel Music wire brass tubing used back WING PANEL CONSTRUCTION Evenly tapered wing ribs require persistent sanding remove high areas scraps balsa will fill low spots used 32-inch aluminum sander similar tee bar attained excellent taper lines applies fuselage bulkheads well wanted easy way establish consistent depth trailing edges rib capstripping /32 capstrips wing ribs CyAed 3/32-square balsa strip bottom TE serve jig rib placement Use /16-square balsa strips /6 capstrips specified did remove jig strips Because ribs different lengths inaccuracies could creep therefore cut ribs slightly long back sanded fit point eyeballed vertical size rib met TE sanded adjustments inner wing panel IWP tapers slightly narrows about half inch makes length airfoil rib little smaller going center section rib 9 airfoil difference about width pencil line rib pattern plan illustrates mind used following procedure cut size ribs 1 Cut out notch ribs 1 thru 8 using IWP rib 0 pattern same size center section ribs Ink centerline rib 2 Trim rib length number 3 Make rib 9 plan pattern ink centerline Engine size type ASP 61 Number RC channels Three Expected flying weight Nine pounds Type construction Built-up Covering/finish Fiberlike iron-on Super Poxy 22 Model Aviation RC Sport Wingspan 96 inches Waiting its turn Texas flight line Author Murray feels t interesting rewarding projects
Edition: Model Aviation - 1993/11
Page Numbers: 16, 17, 18, 19, 20, 21, 22
NO OCR TEXT saga Kansas City Clipper began early days modeling us Kansas City area successfully designing flying rubber-powered models late 1 920s early 1 930s very difficult afford new gas model engines Depression years managed get first Ohlssons designed built first gas model 1936 eightfoot wingspan powered new Ohlsson 60 some good flights first design disaster struck windy day Old Richards Field just outside Kansas CityOthers patiently stayed grounded flew headed straight wind lifted like express elevator about 150 feet suddenly nosed over came roaring straight down plowed total loss crankshaft new Ohlsson 60 bent wished waited better wind conditions others perhaps adjusted trim bit Too lateit gone Like mythical Phoenix Kansas City Clipper concept emerged shattered remains first gas-powered model Shortly after fatal crash design conceived made final drawings early 1937 three-views really looked goodit wasnt boxy like early designs planked oval-cross-section fuselage elliptical outer wing panels made some fairly difficult construction spite finished Kansas City Clipper 1937 covered silk clear doped black trim finished two coats Packard car cream lacquer model weighed just under six pounds repaired Ohlsson 60 provided sufficient power gentle climbs Stability excellent flights concluded good flat glide slope built wing three sections landing gear plugged made convenient packing shipping folks shipped model Burbank California gone 1938 complete aeronautical engineering studies Clippers last flight 1939 eyedropper gas should have used climbed its usual gentle angle headed southeast knew right away chase necessary buddy cranked up old Model followed best could lost sight continued general flight direction spotted crowd Sure enough Clipperit glided side garage no damage anything anyone except engine firewall bulkhead pushed back fuselage too bad things considered Kansas City Clipper later disassembled boxed shipped back folks attic Kansas City later went attic Falls Church Virginia restored 1988 offered AMA Museum now resides its original splendor Bill Murray Temple Texas will continue saga Kansas City Clipper tell rediscovered late 1989 became acquainted Keith late 1989 continued acquaintance letter phone exchanged photos models built Kansas City Clipperit struck fancy wanted very badly eye-catcher ahead its time didnt know time about start interesting rewarding projects have ever undertaken After seeing picture Kansas City Clipper phoned Keith told him just build leaning toward radio-controlled version told quarter-scale three-view drawing elated needed get started start did decided original lines remain essentially unchanged some construction changes would requiredmost notably movable control surfaces Another obvious requirement would access install service radio gear well fuel tank also wanted beef up fuselage withstand occasional bumpy landings None contemplated modifications would change models appearance airworthiness got started detailed full-size plans last ready get jewel underway beginners project Ill wager modelers can get Kansas City air will welcome change pace challenge doing something different GENERAL CONSTRUCTION NOTES used tracing paper copy parts plans attached tracings wood 3M spray adhesive paper peels off after cutting time parts should numbered otherwise identified could kit entire model before construction begins Adhesives used cyanocrylates CyA epoxies six- 45minute working times sandable aliphatic-resin glue Sig-Ment model airplane cement usual assortment tools employed Some favorites Zona saw has detachable 4/2-inch blade stiffener across top can ripsaw it just thing saw access hatch fuselage Straight pins sizes got yard-goods store little fine ones thin sharp rarely split small pieces balsa Rocket City Pin Clamps came handy too good stock single-edge razor blades #11 X-Acto blades always use sharp blade Strips laminating soaked ammonia water used aliphatic-resin glue bent strips around outline pins previously placed over plans strips pinned place allowed dry Leading edge curves sanded rough shape prior assembly Fuselage Jig Make jig blocks 2 x 4 scraps Cut six pieces six inches long ends must square will set end block up fuselage times during construction Since 2 x 4 actually measures 11/2 x 3/2 two fuselage jig blocks can double dihedral supports Cut 1/2 x la/s slot middle two blocks cement x balsa strip raise height 1 5A inchesjust right block inside wing panel up proper dihedral Cut five pieces 1 x 6 scrap 3/ plywood building aids used conjunction jig blocks prop up fuselage Photos show arrangement fuselage must blocked up crutch times during construction dry-fit various components top crutch side longerons thrust line should level check wing stabilizer incidence achieve put two 1 x 6 building aid sticks top crutch between bulkheads projected beyond fuselage enough put nine-inch carpenters level After leveling crutch checked incidence Robart meter FUSELAGE CONSTRUCTIONPRELIMINARY Bulkhead notches need sized accurately longerons should fit snugly facilitate fuselage assembly meet requirement made several notch sanders re hard balsa November1993 17 Completed model yet flown time photo Iron-on fiberlike covering used simulate silk covering original model K&B Super Poxy trim 2 hard balsa scraps about four five inches long Sand down bit compensate sandpaper thickness glue sandpaper three sides great job bulkheads nbs desired snug fits rewarding bulkheads sub-fin rib doublers cut Lite Ply Birch plywood used firewall pylon other plywood parts also used A2 /&4 plywood some places fuselage top bottom longerons cut shape balsa sheet continuous length both /2-inch deep fit bulkhead notches Control Linkages used Gold-N-Rods blue sheaths rudder elevator cable tubing throttle Before laminating firewall cut slot landing gear LG platform /8-inch plywood epoxy cures drill install blind nuts motor mount drill holes fuel lines throttle tubing Shim motor mount about two degrees right down thrust Finish LG supports including brass tubing Epoxy rear support trianglestock bracing BH 3 Epoxy front support LG platform Epoxy balsa stiffeners top BHs 34 5 Using BH pattern outline reinforcement area ood Cut epoxy doublers both sides BHs 4 5 Using BHs 3 6 patterns outline hatch formers 3A 6A /s Lite Ply cut sand exact match lay aside Pin top bottom longerons over plan mark number BH location sides tops Remove Make fuselage crutch side longerons temporary crosspieces pinning re hard balsa strips over top view fuselage Make vertical razor saw cuts longerons bend inward BH 8 weaken bit will bend easier bulge beyond point Force epoxy cut restrengthen Fit longerons rear CyA Cement re balsa crosspieces just behind firewall BH 4 front BH 8 Remove after fuselage built Mark number BH location side top both longerons Removeit should hold its shape FUSELAGE ASSEMBLY Begin hand-holding tee crutch dry-fitting BHs 2 through 1 3A firewall added later crutch longerons parallel firewall BH 8 Beyond BH 8 longerons taper easier slip BHs through crutch engage notches longerons slide back marked positions half-BHs beyond BH 1 3A added later Trial-fit top longeron mporary longeron required maintain BH alignment top front firewall through BH5 pylon eventually goes now have top longeron firewall BH 13A Place assembly top-side-down over plans Put 2 x 4 jig fuselage top view just behind firewall slot straddling fuselage centerline Put other jig between BHs 7 8 positioning same way Remove top longerons lay crutch jigs top next plans replace top longerons jig slots straddling sure BHs marked positions permanent top longeron Anchor jigs align crutch top view fuselage pin jigs Put 2 x 4 blocks side crutch between BHs 12 13 push until top longeron sandwiched Check fuselage alignment plans anchor blocks crutch fuselage now should firmly place bottom-side up worst over Align BHs perpendicular crutch Put half-BHs 14 through 16 place dry-fit bottom longeron everything place its time CyA 18 Model Aviation nnage wing center section have oeen ary-TIT ai mis point Note use jigs support align fuselage Empennage components saddle pieces fuselage stabl elevator platform Hatch formers rails background Positioners support front wing rod tubing can seen view inner wing panels Backs side longerons have received 1/4-inch-square balsa between bulkheads part fuselage beef-up process KC Clipper N // N N BALSA GUSSETS - LSRSTRIBS SA SPARS 61 SIZE ENGINE LAMIISJRTIQNS O 1 BALSA SIft / ARE YOU SURE THIS STAt Wy BET WINTER GOT STAITED UNCLE 5INER FA*$ &15T FEW. lINUrF~ z-zz-z 5 STRIPS A SRS BALSA ~BALSA3 7 3A2 BALSA RIB5 6 BALSA SIlTA/I 4 A4 PRUCE SLSA SMT ERLSA PLANKING BALSA RIBS xX SPRUCE- SPAR IAMW - PD RIB LAMINATED XZDIA MW4 DIR PNEUMATIC LSA Si-IT 32 BALSA SAT Full Size Plans Available-See Page 160 joints except temporary top longeron Keep fuselage anchored place As position firewall slip LG platform slots back firewall BH 2 used 45-minute epoxy gave enough time accurately align firewall no offset epoxy has cured add triangular bracing gussets firewall BH 2 Servo rails can added time Remove fuselage admire Planking Here fun begins Use 1/8 x a strips Start strip over longeron alternate two strips either side side longerons After five six strips side add about same number top bottom balanced approach will prevent fuselage being pulled out shape used Sig-Ment between strips CyA attach strips bulkheads fairly large sanding block needed achieve smooth finish fill low spots Model Magic Omit planking strip side pylon slot Fill after WCS/pylon assembly epoxied fuselage Access Hatch Install cement end formers 3A 6A shim 1A2 balsa scraps simplify removal later same applies hatch top rails fuselage planking finished sanded saw hatch fuselage Begin sawing vertical gap between BHs hatch formers after two three planking strips place cement set keeps sawing gap accessible keeps becoming clogged cement saw topmost planking strips time help hold hatch firmly place until completely separated fuselage Keep horizontal gap between hatch fuselage accessible sawing hatch finally separated fuselage piece planking missing area either fuselage and/or hatch Remove hatch after fuselage planked sanded shape Add A2 balsa sheet ends hatch formers top rails compensate 1/32 gap built sawing Sand snug fit Cowl construction details 1 finished walls should least -inch thick 2 Cut some wood out middle balsa ovals before epoxying together Cement F oval cowl after finished 20 Model Aviation NTOP VIEW /S/N\ _ \FUSELAGE / TON-V __ 7 ILARDING GEAR PATTERNSPIN BLOCK PATTERNS J~NSSY~N5NN55Y5 NON NNNNNNN MODEL AVIATION K C CLIPPER ____________FUSELAGE SIDE VIEW AOIROIJLNIVOVASON BOVAWO BY BILL MURRAY Outer wing panels after final sanding Aluminum tee-bar sanders used achieve consistent taper Wing center sectionlpylon has installed streamlining pieces have added Model Magic fills gaps WING PLAN CENTER SECTION / INNER INS PL iLjitN ____________________________________________________________[v32][b1179648143300]]__ t ___ GHT WING PANEL___ IWN - SN ______________ NINS~ AZ LEFTNO 3 When cowl has sanded shape faired fuselage cut half thrustline found easier finish sanding inside after cut 4 Check fit engine mounted make sure throttle arm can move full-range fit satisfactory keep bottom place cut fit F oval epoxy pin place cured sand shape 5 Inlay 1/16 plywood wood screws used hold cowling place 6 Brush several coats thinned epoxy inside EMPENNAGE CONSTRUCTION Cement tip pieces leading trailing edges flat building board shim up cement tip pieces spars Cement fairing pieces TE fuselage after empennage permanently installed Tack spars together light spots aliphatic-resin glue Put removable sheet balsa scraps center slot stabilizer size fin/rudder keel sure center ribs perpendicular building board Pop spars apart after sanding saw rear spar elevators install elevator horn epoxy center section stabilizer Carve fit fuselage tail section block drill hole rudder linkage Remember make block oversize joins BH 13A Dry-fit stabilizer gold rod attached elevator horn Check incidence adjust saddle necessary Dry-fit remaining components pin place Connect gold rod rudder horn Check smooth movement elevator rudder hand-operating gold rods servo area used 45-minute epoxy install empennage First attach z-bend elevator horn gold rod its blue sheath move stab/elevator toward its saddle onto put carved tail section place Slip fin/rudder keel through slot until firmly position Recheck fit empennage components pin place let cure overnight Sub-Fin Carbon Fibers Epoxy sub-fin place carbon-fiber tape hand thought little high-tech stuff might helpful put tape longerons added strength believe optional because planked fuselage exceptionally strong PYLON/WING CENTER SECTION CONSTRUCTION Ink locations pylon rib outline its lateral center line line representing top top longeron November 1993 21 RIR ANE L IK C CLIPPER INNER WINO PANEL DETAIL Skeleton view after planking has begun Balanced application fuselage shell has planked cowl shaping has planking strips helps fuselage retain correct shape begun Additional planking added after pylon mounted Full Size Available-See Pagel6O s-I3-2 --_ AK Kg3A OWE S-43 0 SIDE FRONT VIEW ii --1-- 4 aF- II- TOP VIEW OR K C CLIPPER CrAILCCCOCWC BC BILL COJARAC 00*0106 BC ACE ODARBOC BC 1 STAWI IZER vertical lines representing extended notches BHs 3 4 5 marks convenient checking built-in wing incidence fit pylon streamlining pieces must slotted fit over extended notches BHs dry-fitting pylon fuselage make certain fits snugly BH notches cuts rests top longeron Also see perpendicular crutch bottom parallel crutch Wing Center Section WCS ribs adjoining ribs inner panels same size Stack sand align size notches drill rod dowel holes etc Use t balsa removable scraps size pylon slot keep center ribs perpendicular building board No built-in tilts please WCS bottom spars end pylon slot pylon should project above rib line can slightly below used K&S wing rod package3/s rod /2 tube 12 inches long cut tube half segment inner wing panel Music wire brass tubing used back WING PANEL CONSTRUCTION Evenly tapered wing ribs require persistent sanding remove high areas scraps balsa will fill low spots used 32-inch aluminum sander similar tee bar attained excellent taper lines applies fuselage bulkheads well wanted easy way establish consistent depth trailing edges rib capstripping /32 capstrips wing ribs CyAed 3/32-square balsa strip bottom TE serve jig rib placement Use /16-square balsa strips /6 capstrips specified did remove jig strips Because ribs different lengths inaccuracies could creep therefore cut ribs slightly long back sanded fit point eyeballed vertical size rib met TE sanded adjustments inner wing panel IWP tapers slightly narrows about half inch makes length airfoil rib little smaller going center section rib 9 airfoil difference about width pencil line rib pattern plan illustrates mind used following procedure cut size ribs 1 Cut out notch ribs 1 thru 8 using IWP rib 0 pattern same size center section ribs Ink centerline rib 2 Trim rib length number 3 Make rib 9 plan pattern ink centerline Engine size type ASP 61 Number RC channels Three Expected flying weight Nine pounds Type construction Built-up Covering/finish Fiberlike iron-on Super Poxy 22 Model Aviation RC Sport Wingspan 96 inches Waiting its turn Texas flight line Author Murray feels t interesting rewarding projects