NO OCR TEXT looking glider low aspect ratio wings proceeded top nearby hill watched utter amazement Greg put sloper through its paces last could enjoy hobby windy days Slope soaring requires wind also re quires hillside facing prevailing wind Surface winds follow contour terrain thus provide upwards flow ing air mass capable supporting model really constantly descending rising air mass problem will getting model down rather keeping up available site has plateau top can fly edge out over slope simply walk back onto plateau area land out area rising air however site terminates ridge will very turbulent area ridge should fly point down slope away turbulence requires hillside landing begins separate relatively delicate thermal soarers rugged slope design flying site ridge category tore up lot gliders learning land among rocks dirt mounds hillside Mountaineer third series gliders designed specifically intermediate flier operating less favorable conditions An enjoyable feature slope soaring close proximity model flier Most flight will relatively wind model orientation easy maintain Slope soaring acrobatics very compatible can get real workout slope compared gentle art thermal soaring Mountaineers wing loading 14 oz/sq ft well suited wind velocities over 8 mph flat-bottom airfoil responsive yet docile favor foam paper wing construction because can build new wing quickly repair ing wing damaged bad hillside landing all-flying stabilator provides smooth control response well goo shock absorbing qualities har landings Rudder area has progressively creased provide good low-speed cc trol particularly during landing proach Mountaineers prede sors well example phoi graphs have utilized Y8 plywood fuse lage sides bottom measure conJune 1977 33 slope soarer highly speciaiizea macnine Mountaineer s wing ioaaing Ot 14 ozIsq tt wail suiteo wino veiocixies Ot man e mpn uinor prefers foam-and-paper panels because finds quicker make new wing repair old Beginning another challenging flight slight ballooning tendency due rising airrequiring slight down avoid stall launching hand must quickly diverted transmitter Below Low pass front flier Turns should away hill until basic soar ing techniques mastered Long gradual slopes like provide smoothest air tributes considerable strength utilized 1/8 mahogany door skins obtainable local lumber yard source ply wood material works easily fairly light cheaper balsa construc tion Construction Begin construction cutting rudder stabilators medium t balsa Sand shape imbed 3/32 ID brass tubing using control horn 3/32 wire joiners installed aid ob taining proper spacing alignment Use epoxy glue balsa filler pieces secure tubes Install Kleet aileron bearings hinges rudder using 3/32 wire pin fin side hinges spacing alignment Cover completed control surfaces lightweight Silkspan Cut out fuselage sides hard t balsa aforementioned ply wood Note fuselage outline between wing mount canopy areas Glue alsa longerons 3/32 X ce canopy rails place sure make right left side drying fabricate ply wood fin assembly necessary adjust hole slot spacing fit control horn have available plywood formers F-I F-2 can made up drilled control rod passage nose block soft pine can laminated common lumber stock Prior joining fuselage sides trim long erons triangle section point indicated aft Join fuselage sides F-i F-2 being sure maintain accurate align ments dry add nose block plywood fin assembly control horn held place short length 3/32 ID brass tubing through front pivot secured washer soldered side Note bearing desirable required omitted secure con trol horn temporarily cotter pin Add top sheeting dorsal fin balsa block between wing canopy Sand ex cess balsa away Glue servo mounts complete ballast box Install radio gear temporarily Mount rudder hinges fin install rudder horn Connect con trols Nyrod favorite equiva lent Use fixed connection stabila tor horn prevent unwanted adjustments Use adjustable clevis servo end Adjust control travel 1 direc tion rudder down stabilators measured leading edge surfaces Anchor Nyrod housings well Remove radio gear install bottom sheeting tail skid Drill holes wing retaining dowels install dowels until sanding filling complete Build canopy frame place insure proper fit Begin protecting fuselage Saran Wrap equivalent prefer full length stiffeners beneath canopy floor automatically provide alignment may wish omit ard use small locating keys instead plastic canopy itself provides adequate rigidity Fabricate canopy floor /8 balsa crossgrain add front rear formers Allow 1/32 canopy thick ness edges Cut down Sig 15-in canopy fit suggest reversing canopy better fit rear stock can opy faces forward glider Prior glu ing canopy floor install desired de tail and/or finish cover contact paperContinued page 97 34 Model Aviation ruu, iur uw vurnuL w pruven accommodation early Heathkit system Canopy retained rubberbanas neturn address carry-over years free flight rudder linkage adjustment brought about cold wind effects nyrod pushrod guide transported site nice warm car reveals simple functional systemessentially Ilfin houses control horn 1 DIHEDRAL DETAIL IB SCALESEOTIORS N FUERGLA5E TAPEL4X 1/4 SPARIIBUILT UP TIP SECTION 10 POINT CSIRONECOAT OVER FOAM CORE10 POINT CIWONSCOAT PAPER IVIA BALSA OVER FOAM COREFOAM WINO TIP SECTION BUILT UP WITH CAP STRIPS BUILT UP SIIEETES WITH 1/W BALSA OMIYSPAR S TE IF SNEETEO I/IS BALSA 0 Il [v32][b-1-10-1-10]] V4S3/4TRAILINGEFOAM WUNG ROOT SECTION EDGE 1/Nil S/A BES w____________________________________________________ FIN DETAIL I____________ IVIS PLYIllS MEDIUM SMEE SANO TO ARIPOB IItit m IItttIIIIIII TUPlMO I/4I1 SIN TRALSig EDGE NUSUCA OWn co NOIBSURE DORSAL0 Pid OIAMIED FOR OLMITY SERVOS EE 851011 ISWNNYIDOO OR EGIAII RUOER CONTROL SEE SloE ELEVATOR FINE ROSE -OCII CONTROL Ti RIIDOER STAt VA F-IPSSMEASURES PINE SERVO551MG AREA MOUNT'I rH B SEE L CD CD 1 -1 FRONTREAR CANOPY bLEHEASS IS SHEET IASE 15 ALUM SNIB11W MWIC SIRE NOTE ALA MATERIAL BALSA IAILESS SPEOFIED [OR THE NEW GOLDEN AGE SPORTSMAN PILOT popular demand new 2% foot scale pilot larger models May easily painted suit particular requirements Other styles sizes including 1 2 le also available GOLDEN AGE WHEELS NEW 1920s 1930s air craft models Featured flexible semi-pneumatic tires paintable wheels Ten sizes ugh 5 diameter Vintage smooth contour styles also available WLLA SEND 50 FOR COMPLETE CATALOG DEPT MA PAWNEE ST SAN MARCOS CA 9 England Glen Alison writes building new stunter foam wing Goldberg retracts states using clockwork timer two microswitches batteries servo going used wing-tip weight enough increase performance merit extra weight mechanical problems Good question Price Adami sin Davis former national cali ber fliers Davis still flying obviously looking something add performance Certainly hope judges will im pressed retracts enough gain some extra points maybe few ex tra impression points will spell difference between mediocre top con tender No doubt cleaner airframe will cut through air lessened drag feel certain amount drag actually helps stunt plane Anyway probably wont see re tracts stunter Gieseke Werwage Jim Lynch Bob Hunt working some retracts Genesis dropped idea favor practice 76 Nats Judging results might have better choice Profile Tanks Charles Hubble wrote Baltimire MD offer some hints profile tank mounting First warns make certain pickup tubing exact center tank V-shape section Solder using solid solder flux Make certain overflow tube extends top tank always cut tube 45-degree angle solder topWP recom mends soldering piece tubing bent 90-degree angle over top vent catch ram air Charles stresses installa tion tank through cutout fuselage pickup tube direct alignment spray bar viewed top As has practice years tank pickup tube should also line up center venturi viewed side However Slow Combat boys have very successful using tanks pickup coming out bottom tank miss cylinder head Either way side view center tank should line up venturi above make certain tank clean clean clean inside before firing up action Gieseke Nobler Plans Tom Dixon nounces plans Gieseke ver sion Nobler outlined De cember 1976 January 1977 issues Model Aviation now available $500 Proceeds plans will go towards sponsoring annual PAMPA stunt contests Atlanta Order Tom 9025 Hurst Court Jonesboro GA 30236 Tel 404-471-3271 Write information PAMPA comments stunt Wynn Paul 1640 May wick Drive Lex KY 40504 Mountaineer/Haught continued page 34 Final sand fuselage fair fin fuselage microballons 5-minute epoxy Shape fillets finger dipped dope thinner before set up Cover fuselage least rear wing dowel pref erably completely tail post 1 -oz fiberglass cloth adhered Hobby Poxy Formula II epoxy glue thinned 100% methanol dry sand smooth fit up aluminum landing skid towhook desired high-start winch launch ing want towhook may substitute 1/8 X ce landing skid Apply filler coat thinned Hobby Poxy Stuff Sand well plans indicate four optional wings Mountaineer foam core 10point chromecoat paper foam core balsa built-up capstrips built up sheet heartily recommend foam co-rewith chromecoat wing strong far cheapest 10-point chromecoat obtained local printshop around 35 cents 20 30 sheet fairly stiff has very slick high gloss finish side takes paint well Foam insulation sheets 1 X 24 X 96 available lumber yards make good inexpensive wing cores 2-in thick ness also available white popcorn foam lightest being about 1 lb/ cu ft blue variety little heavier about 2 lbs/cu ft sands easier stronger normally use white pop corn variety never have cut foam cores its worth give try have articles describing technique cutter may very simple bow strung nichrome wire pinch 008 stranded control-line wire Power can anything variac automobile battery cut cores glue balsa parts white glue evening next evening sand balsa shape leading edge touch up cores Continued page 98 ATTENTION ALL AMA CLUBS Need Working Capital Earn $2000 0 next contest EASY WAY complete docket send $995 pIus 50 cents postage Godfrey & Son Inc 254 Washington St Binghamton NY 13901 June1977 97 SUPER LOW COST way buy sell advertise thru Z R/C TRADERYM ox 833 East Lansing Michigan 48823 * As low 1080 per word * Write Details WINGS EE1iF0XBAT& MORRISON 1977 cATALOG 25$ EPLA-TEcN48500 MC KENZIE HWY IflftFrOtIOflOI VIDA ON 97488 see local hobby dealer o Stahl designa lkJ~ olmast 40 yeors ago 5__ ____________ OGA * los Earl StuNs famous RUBBER & CO2 WINNER AT THE 50th NATS Rondo Spds 58 WINGSPAN Send free brochure 4 FLYLINE MODELS 22 1/2 WINGSPAN 10643 ASHBY PL FAIRFAX VA 22030 RUBBER POWERED FLYING MODELS NEW Kits 28 IN SPAN \PORT$~ORTs475 uis ViN*Off Rite U 13 IN SPAN P-NUT KIT S349~ O ae*Wte~ 13 IN SPAN P-NUTKIT $34916 IN SPAN SPORT $349 Peck-Pefymers PO BOX 2498-AMA Continued page 97 light sanding cover chromecoat Using rubber cement adhesive coat both paper wing core being sure its dry before proceeding covering Lay bottom wing surface chromecoat sup ported flat surface roll wing around leading edge back across top wing surface Take care twist warps wing wing panels now ready joining Sand bevel butts attain required 4 dihedral under tip Join 5-minute epoxy cover joint 4-in wide fiberglass cloth ad hered thinned epoxy Epoxy tip blocks place Sand fill wing ready finish wish use foam core covered balsa may omit spar trailing edge desire built-up wing cut ribs shape stacking seventeen 3/32 balsa rib blanks between root- tip-rib tem plates carve sand shape Lay down leading trailing edges plan add bottom leading edge sheet fit bot tom cap strips Glue bottom spar sheet ing add ribs dry add top spar remove plan Build remaining wing stage join proper di hedral Reinforce spar joints 3/32in dihedral brace cut fit behind spars Fit top leading edge sheeting cap strips sheet center section Glue wing tip blocks place sand completed wing PEANUT SCALE KITS PIETENPOL$329 MILES$329 TURBULENT$329 PIPER J3 CUB$329 ANDREASON$349 COUGAR $349 MUSTANG$349 ZERO-$349 SPORT MODEL KITS STRINGLESS WONDER$249 PECK ROG .$139 KITS 0 PLANS 0 ACCESSORIES CO-2 ENGINES SNARK & BROWN REAL JAPANESE TISSUE-PROPS COMPLETE CATALOG 5O MANY NARD TO FIND ITEMS LA MESA CALIF 92041 PNONE 714 469-8675 714 442-4636 final shape Built-up wings cap strips satis factory flying site free weeds other sharp objects rugged wing fully sheeted variety con struction procedure basically same except cap strips replaced sheet balsa Make up wing skins ad vance construction Sheet balsa straight enough join edge edge out first trimming trim overlap edges joined straightedge down center overlap run along straightedge sharp knife razor blade thus trimming both edges once Any irregularities trimming will correspond sheet matched resulting custom fit Lay down piece Saran Wrap fit edges sheet together holding securely join Zap equivalent An alternate method gluing join sheets masking tape flat Pick up taped sheets fold open joint apply balsa cement Lay sheets back bench tape side down secure until dry Re move tape sand outside surface absolute ultimate strength cover sheeted wing -oz fiberglass cloth adhered Hobby Poxy Formula II thinned 100% methanol brushed through cloth Finish Mountaineer favorite materials As late have using thinned out Hobby Poxy Stuff filling grain dis count-store spray-can enamel color paints dry quickly look great besides costing very little After finishing components reinstall radio hook up controls check trav el check assembled model proper balance noted plans Ballast neces sary little nose heavy OK tail heavy model disastrous Flying Prior launching slope test glide model over level ground deter neutral control settings satis factory model should glide straight no stall diving tendencies Adjust pushrods accordingly have flown hill fore would offer basic comments Launch directly wind angle slope prepared apply slight down elevator avoid stall slopers tend ballon launch get familiar flight characteristics Mountaineer fly figure-eight pattern 100-feet out making turns away hill Let model drift toward slope crosses front prior turning wind next leg flying back toward down wind keep mind ground speed will sum normal flying speed plus wind normal tendency slow model apparent speed going wind normal speed less wind speed can produce unexpected stall hillside landings choice suggest landing low cross-slope pass nose model quartered wind feeding down eleva tor Dont forget hot coffee gets chilly out hill FF Indoor/Tenny continued page 38 actly correct Stand back visually spect wing alignment glue wing posts cabane Fig 8 shows wing should appear note stands just outside dihedral joints primary bracing wires can attached before moving anything Finally Fig 9 Fig 9 shows stands supporting tips dihedral joints glued dotted lines show secondary bracing used Have Stands Will Travel now apparent flat surface con98 Model Aviation 24 lIZ WINGSPAN 5 10% FOR PACKING AND POSTAGE VA RESIDENTS ADD 4% TAX
Edition: Model Aviation - 1977/06
Page Numbers: 32, 33, 34, 35, 97, 98
NO OCR TEXT looking glider low aspect ratio wings proceeded top nearby hill watched utter amazement Greg put sloper through its paces last could enjoy hobby windy days Slope soaring requires wind also re quires hillside facing prevailing wind Surface winds follow contour terrain thus provide upwards flow ing air mass capable supporting model really constantly descending rising air mass problem will getting model down rather keeping up available site has plateau top can fly edge out over slope simply walk back onto plateau area land out area rising air however site terminates ridge will very turbulent area ridge should fly point down slope away turbulence requires hillside landing begins separate relatively delicate thermal soarers rugged slope design flying site ridge category tore up lot gliders learning land among rocks dirt mounds hillside Mountaineer third series gliders designed specifically intermediate flier operating less favorable conditions An enjoyable feature slope soaring close proximity model flier Most flight will relatively wind model orientation easy maintain Slope soaring acrobatics very compatible can get real workout slope compared gentle art thermal soaring Mountaineers wing loading 14 oz/sq ft well suited wind velocities over 8 mph flat-bottom airfoil responsive yet docile favor foam paper wing construction because can build new wing quickly repair ing wing damaged bad hillside landing all-flying stabilator provides smooth control response well goo shock absorbing qualities har landings Rudder area has progressively creased provide good low-speed cc trol particularly during landing proach Mountaineers prede sors well example phoi graphs have utilized Y8 plywood fuse lage sides bottom measure conJune 1977 33 slope soarer highly speciaiizea macnine Mountaineer s wing ioaaing Ot 14 ozIsq tt wail suiteo wino veiocixies Ot man e mpn uinor prefers foam-and-paper panels because finds quicker make new wing repair old Beginning another challenging flight slight ballooning tendency due rising airrequiring slight down avoid stall launching hand must quickly diverted transmitter Below Low pass front flier Turns should away hill until basic soar ing techniques mastered Long gradual slopes like provide smoothest air tributes considerable strength utilized 1/8 mahogany door skins obtainable local lumber yard source ply wood material works easily fairly light cheaper balsa construc tion Construction Begin construction cutting rudder stabilators medium t balsa Sand shape imbed 3/32 ID brass tubing using control horn 3/32 wire joiners installed aid ob taining proper spacing alignment Use epoxy glue balsa filler pieces secure tubes Install Kleet aileron bearings hinges rudder using 3/32 wire pin fin side hinges spacing alignment Cover completed control surfaces lightweight Silkspan Cut out fuselage sides hard t balsa aforementioned ply wood Note fuselage outline between wing mount canopy areas Glue alsa longerons 3/32 X ce canopy rails place sure make right left side drying fabricate ply wood fin assembly necessary adjust hole slot spacing fit control horn have available plywood formers F-I F-2 can made up drilled control rod passage nose block soft pine can laminated common lumber stock Prior joining fuselage sides trim long erons triangle section point indicated aft Join fuselage sides F-i F-2 being sure maintain accurate align ments dry add nose block plywood fin assembly control horn held place short length 3/32 ID brass tubing through front pivot secured washer soldered side Note bearing desirable required omitted secure con trol horn temporarily cotter pin Add top sheeting dorsal fin balsa block between wing canopy Sand ex cess balsa away Glue servo mounts complete ballast box Install radio gear temporarily Mount rudder hinges fin install rudder horn Connect con trols Nyrod favorite equiva lent Use fixed connection stabila tor horn prevent unwanted adjustments Use adjustable clevis servo end Adjust control travel 1 direc tion rudder down stabilators measured leading edge surfaces Anchor Nyrod housings well Remove radio gear install bottom sheeting tail skid Drill holes wing retaining dowels install dowels until sanding filling complete Build canopy frame place insure proper fit Begin protecting fuselage Saran Wrap equivalent prefer full length stiffeners beneath canopy floor automatically provide alignment may wish omit ard use small locating keys instead plastic canopy itself provides adequate rigidity Fabricate canopy floor /8 balsa crossgrain add front rear formers Allow 1/32 canopy thick ness edges Cut down Sig 15-in canopy fit suggest reversing canopy better fit rear stock can opy faces forward glider Prior glu ing canopy floor install desired de tail and/or finish cover contact paperContinued page 97 34 Model Aviation ruu, iur uw vurnuL w pruven accommodation early Heathkit system Canopy retained rubberbanas neturn address carry-over years free flight rudder linkage adjustment brought about cold wind effects nyrod pushrod guide transported site nice warm car reveals simple functional systemessentially Ilfin houses control horn 1 DIHEDRAL DETAIL IB SCALESEOTIORS N FUERGLA5E TAPEL4X 1/4 SPARIIBUILT UP TIP SECTION 10 POINT CSIRONECOAT OVER FOAM CORE10 POINT CIWONSCOAT PAPER IVIA BALSA OVER FOAM COREFOAM WINO TIP SECTION BUILT UP WITH CAP STRIPS BUILT UP SIIEETES WITH 1/W BALSA OMIYSPAR S TE IF SNEETEO I/IS BALSA 0 Il [v32][b-1-10-1-10]] V4S3/4TRAILINGEFOAM WUNG ROOT SECTION EDGE 1/Nil S/A BES w____________________________________________________ FIN DETAIL I____________ IVIS PLYIllS MEDIUM SMEE SANO TO ARIPOB IItit m IItttIIIIIII TUPlMO I/4I1 SIN TRALSig EDGE NUSUCA OWn co NOIBSURE DORSAL0 Pid OIAMIED FOR OLMITY SERVOS EE 851011 ISWNNYIDOO OR EGIAII RUOER CONTROL SEE SloE ELEVATOR FINE ROSE -OCII CONTROL Ti RIIDOER STAt VA F-IPSSMEASURES PINE SERVO551MG AREA MOUNT'I rH B SEE L CD CD 1 -1 FRONTREAR CANOPY bLEHEASS IS SHEET IASE 15 ALUM SNIB11W MWIC SIRE NOTE ALA MATERIAL BALSA IAILESS SPEOFIED [OR THE NEW GOLDEN AGE SPORTSMAN PILOT popular demand new 2% foot scale pilot larger models May easily painted suit particular requirements Other styles sizes including 1 2 le also available GOLDEN AGE WHEELS NEW 1920s 1930s air craft models Featured flexible semi-pneumatic tires paintable wheels Ten sizes ugh 5 diameter Vintage smooth contour styles also available WLLA SEND 50 FOR COMPLETE CATALOG DEPT MA PAWNEE ST SAN MARCOS CA 9 England Glen Alison writes building new stunter foam wing Goldberg retracts states using clockwork timer two microswitches batteries servo going used wing-tip weight enough increase performance merit extra weight mechanical problems Good question Price Adami sin Davis former national cali ber fliers Davis still flying obviously looking something add performance Certainly hope judges will im pressed retracts enough gain some extra points maybe few ex tra impression points will spell difference between mediocre top con tender No doubt cleaner airframe will cut through air lessened drag feel certain amount drag actually helps stunt plane Anyway probably wont see re tracts stunter Gieseke Werwage Jim Lynch Bob Hunt working some retracts Genesis dropped idea favor practice 76 Nats Judging results might have better choice Profile Tanks Charles Hubble wrote Baltimire MD offer some hints profile tank mounting First warns make certain pickup tubing exact center tank V-shape section Solder using solid solder flux Make certain overflow tube extends top tank always cut tube 45-degree angle solder topWP recom mends soldering piece tubing bent 90-degree angle over top vent catch ram air Charles stresses installa tion tank through cutout fuselage pickup tube direct alignment spray bar viewed top As has practice years tank pickup tube should also line up center venturi viewed side However Slow Combat boys have very successful using tanks pickup coming out bottom tank miss cylinder head Either way side view center tank should line up venturi above make certain tank clean clean clean inside before firing up action Gieseke Nobler Plans Tom Dixon nounces plans Gieseke ver sion Nobler outlined De cember 1976 January 1977 issues Model Aviation now available $500 Proceeds plans will go towards sponsoring annual PAMPA stunt contests Atlanta Order Tom 9025 Hurst Court Jonesboro GA 30236 Tel 404-471-3271 Write information PAMPA comments stunt Wynn Paul 1640 May wick Drive Lex KY 40504 Mountaineer/Haught continued page 34 Final sand fuselage fair fin fuselage microballons 5-minute epoxy Shape fillets finger dipped dope thinner before set up Cover fuselage least rear wing dowel pref erably completely tail post 1 -oz fiberglass cloth adhered Hobby Poxy Formula II epoxy glue thinned 100% methanol dry sand smooth fit up aluminum landing skid towhook desired high-start winch launch ing want towhook may substitute 1/8 X ce landing skid Apply filler coat thinned Hobby Poxy Stuff Sand well plans indicate four optional wings Mountaineer foam core 10point chromecoat paper foam core balsa built-up capstrips built up sheet heartily recommend foam co-rewith chromecoat wing strong far cheapest 10-point chromecoat obtained local printshop around 35 cents 20 30 sheet fairly stiff has very slick high gloss finish side takes paint well Foam insulation sheets 1 X 24 X 96 available lumber yards make good inexpensive wing cores 2-in thick ness also available white popcorn foam lightest being about 1 lb/ cu ft blue variety little heavier about 2 lbs/cu ft sands easier stronger normally use white pop corn variety never have cut foam cores its worth give try have articles describing technique cutter may very simple bow strung nichrome wire pinch 008 stranded control-line wire Power can anything variac automobile battery cut cores glue balsa parts white glue evening next evening sand balsa shape leading edge touch up cores Continued page 98 ATTENTION ALL AMA CLUBS Need Working Capital Earn $2000 0 next contest EASY WAY complete docket send $995 pIus 50 cents postage Godfrey & Son Inc 254 Washington St Binghamton NY 13901 June1977 97 SUPER LOW COST way buy sell advertise thru Z R/C TRADERYM ox 833 East Lansing Michigan 48823 * As low 1080 per word * Write Details WINGS EE1iF0XBAT& MORRISON 1977 cATALOG 25$ EPLA-TEcN48500 MC KENZIE HWY IflftFrOtIOflOI VIDA ON 97488 see local hobby dealer o Stahl designa lkJ~ olmast 40 yeors ago 5__ ____________ OGA * los Earl StuNs famous RUBBER & CO2 WINNER AT THE 50th NATS Rondo Spds 58 WINGSPAN Send free brochure 4 FLYLINE MODELS 22 1/2 WINGSPAN 10643 ASHBY PL FAIRFAX VA 22030 RUBBER POWERED FLYING MODELS NEW Kits 28 IN SPAN \PORT$~ORTs475 uis ViN*Off Rite U 13 IN SPAN P-NUT KIT S349~ O ae*Wte~ 13 IN SPAN P-NUTKIT $34916 IN SPAN SPORT $349 Peck-Pefymers PO BOX 2498-AMA Continued page 97 light sanding cover chromecoat Using rubber cement adhesive coat both paper wing core being sure its dry before proceeding covering Lay bottom wing surface chromecoat sup ported flat surface roll wing around leading edge back across top wing surface Take care twist warps wing wing panels now ready joining Sand bevel butts attain required 4 dihedral under tip Join 5-minute epoxy cover joint 4-in wide fiberglass cloth ad hered thinned epoxy Epoxy tip blocks place Sand fill wing ready finish wish use foam core covered balsa may omit spar trailing edge desire built-up wing cut ribs shape stacking seventeen 3/32 balsa rib blanks between root- tip-rib tem plates carve sand shape Lay down leading trailing edges plan add bottom leading edge sheet fit bot tom cap strips Glue bottom spar sheet ing add ribs dry add top spar remove plan Build remaining wing stage join proper di hedral Reinforce spar joints 3/32in dihedral brace cut fit behind spars Fit top leading edge sheeting cap strips sheet center section Glue wing tip blocks place sand completed wing PEANUT SCALE KITS PIETENPOL$329 MILES$329 TURBULENT$329 PIPER J3 CUB$329 ANDREASON$349 COUGAR $349 MUSTANG$349 ZERO-$349 SPORT MODEL KITS STRINGLESS WONDER$249 PECK ROG .$139 KITS 0 PLANS 0 ACCESSORIES CO-2 ENGINES SNARK & BROWN REAL JAPANESE TISSUE-PROPS COMPLETE CATALOG 5O MANY NARD TO FIND ITEMS LA MESA CALIF 92041 PNONE 714 469-8675 714 442-4636 final shape Built-up wings cap strips satis factory flying site free weeds other sharp objects rugged wing fully sheeted variety con struction procedure basically same except cap strips replaced sheet balsa Make up wing skins ad vance construction Sheet balsa straight enough join edge edge out first trimming trim overlap edges joined straightedge down center overlap run along straightedge sharp knife razor blade thus trimming both edges once Any irregularities trimming will correspond sheet matched resulting custom fit Lay down piece Saran Wrap fit edges sheet together holding securely join Zap equivalent An alternate method gluing join sheets masking tape flat Pick up taped sheets fold open joint apply balsa cement Lay sheets back bench tape side down secure until dry Re move tape sand outside surface absolute ultimate strength cover sheeted wing -oz fiberglass cloth adhered Hobby Poxy Formula II thinned 100% methanol brushed through cloth Finish Mountaineer favorite materials As late have using thinned out Hobby Poxy Stuff filling grain dis count-store spray-can enamel color paints dry quickly look great besides costing very little After finishing components reinstall radio hook up controls check trav el check assembled model proper balance noted plans Ballast neces sary little nose heavy OK tail heavy model disastrous Flying Prior launching slope test glide model over level ground deter neutral control settings satis factory model should glide straight no stall diving tendencies Adjust pushrods accordingly have flown hill fore would offer basic comments Launch directly wind angle slope prepared apply slight down elevator avoid stall slopers tend ballon launch get familiar flight characteristics Mountaineer fly figure-eight pattern 100-feet out making turns away hill Let model drift toward slope crosses front prior turning wind next leg flying back toward down wind keep mind ground speed will sum normal flying speed plus wind normal tendency slow model apparent speed going wind normal speed less wind speed can produce unexpected stall hillside landings choice suggest landing low cross-slope pass nose model quartered wind feeding down eleva tor Dont forget hot coffee gets chilly out hill FF Indoor/Tenny continued page 38 actly correct Stand back visually spect wing alignment glue wing posts cabane Fig 8 shows wing should appear note stands just outside dihedral joints primary bracing wires can attached before moving anything Finally Fig 9 Fig 9 shows stands supporting tips dihedral joints glued dotted lines show secondary bracing used Have Stands Will Travel now apparent flat surface con98 Model Aviation 24 lIZ WINGSPAN 5 10% FOR PACKING AND POSTAGE VA RESIDENTS ADD 4% TAX
Edition: Model Aviation - 1977/06
Page Numbers: 32, 33, 34, 35, 97, 98
NO OCR TEXT looking glider low aspect ratio wings proceeded top nearby hill watched utter amazement Greg put sloper through its paces last could enjoy hobby windy days Slope soaring requires wind also re quires hillside facing prevailing wind Surface winds follow contour terrain thus provide upwards flow ing air mass capable supporting model really constantly descending rising air mass problem will getting model down rather keeping up available site has plateau top can fly edge out over slope simply walk back onto plateau area land out area rising air however site terminates ridge will very turbulent area ridge should fly point down slope away turbulence requires hillside landing begins separate relatively delicate thermal soarers rugged slope design flying site ridge category tore up lot gliders learning land among rocks dirt mounds hillside Mountaineer third series gliders designed specifically intermediate flier operating less favorable conditions An enjoyable feature slope soaring close proximity model flier Most flight will relatively wind model orientation easy maintain Slope soaring acrobatics very compatible can get real workout slope compared gentle art thermal soaring Mountaineers wing loading 14 oz/sq ft well suited wind velocities over 8 mph flat-bottom airfoil responsive yet docile favor foam paper wing construction because can build new wing quickly repair ing wing damaged bad hillside landing all-flying stabilator provides smooth control response well goo shock absorbing qualities har landings Rudder area has progressively creased provide good low-speed cc trol particularly during landing proach Mountaineers prede sors well example phoi graphs have utilized Y8 plywood fuse lage sides bottom measure conJune 1977 33 slope soarer highly speciaiizea macnine Mountaineer s wing ioaaing Ot 14 ozIsq tt wail suiteo wino veiocixies Ot man e mpn uinor prefers foam-and-paper panels because finds quicker make new wing repair old Beginning another challenging flight slight ballooning tendency due rising airrequiring slight down avoid stall launching hand must quickly diverted transmitter Below Low pass front flier Turns should away hill until basic soar ing techniques mastered Long gradual slopes like provide smoothest air tributes considerable strength utilized 1/8 mahogany door skins obtainable local lumber yard source ply wood material works easily fairly light cheaper balsa construc tion Construction Begin construction cutting rudder stabilators medium t balsa Sand shape imbed 3/32 ID brass tubing using control horn 3/32 wire joiners installed aid ob taining proper spacing alignment Use epoxy glue balsa filler pieces secure tubes Install Kleet aileron bearings hinges rudder using 3/32 wire pin fin side hinges spacing alignment Cover completed control surfaces lightweight Silkspan Cut out fuselage sides hard t balsa aforementioned ply wood Note fuselage outline between wing mount canopy areas Glue alsa longerons 3/32 X ce canopy rails place sure make right left side drying fabricate ply wood fin assembly necessary adjust hole slot spacing fit control horn have available plywood formers F-I F-2 can made up drilled control rod passage nose block soft pine can laminated common lumber stock Prior joining fuselage sides trim long erons triangle section point indicated aft Join fuselage sides F-i F-2 being sure maintain accurate align ments dry add nose block plywood fin assembly control horn held place short length 3/32 ID brass tubing through front pivot secured washer soldered side Note bearing desirable required omitted secure con trol horn temporarily cotter pin Add top sheeting dorsal fin balsa block between wing canopy Sand ex cess balsa away Glue servo mounts complete ballast box Install radio gear temporarily Mount rudder hinges fin install rudder horn Connect con trols Nyrod favorite equiva lent Use fixed connection stabila tor horn prevent unwanted adjustments Use adjustable clevis servo end Adjust control travel 1 direc tion rudder down stabilators measured leading edge surfaces Anchor Nyrod housings well Remove radio gear install bottom sheeting tail skid Drill holes wing retaining dowels install dowels until sanding filling complete Build canopy frame place insure proper fit Begin protecting fuselage Saran Wrap equivalent prefer full length stiffeners beneath canopy floor automatically provide alignment may wish omit ard use small locating keys instead plastic canopy itself provides adequate rigidity Fabricate canopy floor /8 balsa crossgrain add front rear formers Allow 1/32 canopy thick ness edges Cut down Sig 15-in canopy fit suggest reversing canopy better fit rear stock can opy faces forward glider Prior glu ing canopy floor install desired de tail and/or finish cover contact paperContinued page 97 34 Model Aviation ruu, iur uw vurnuL w pruven accommodation early Heathkit system Canopy retained rubberbanas neturn address carry-over years free flight rudder linkage adjustment brought about cold wind effects nyrod pushrod guide transported site nice warm car reveals simple functional systemessentially Ilfin houses control horn 1 DIHEDRAL DETAIL IB SCALESEOTIORS N FUERGLA5E TAPEL4X 1/4 SPARIIBUILT UP TIP SECTION 10 POINT CSIRONECOAT OVER FOAM CORE10 POINT CIWONSCOAT PAPER IVIA BALSA OVER FOAM COREFOAM WINO TIP SECTION BUILT UP WITH CAP STRIPS BUILT UP SIIEETES WITH 1/W BALSA OMIYSPAR S TE IF SNEETEO I/IS BALSA 0 Il [v32][b-1-10-1-10]] V4S3/4TRAILINGEFOAM WUNG ROOT SECTION EDGE 1/Nil S/A BES w____________________________________________________ FIN DETAIL I____________ IVIS PLYIllS MEDIUM SMEE SANO TO ARIPOB IItit m IItttIIIIIII TUPlMO I/4I1 SIN TRALSig EDGE NUSUCA OWn co NOIBSURE DORSAL0 Pid OIAMIED FOR OLMITY SERVOS EE 851011 ISWNNYIDOO OR EGIAII RUOER CONTROL SEE SloE ELEVATOR FINE ROSE -OCII CONTROL Ti RIIDOER STAt VA F-IPSSMEASURES PINE SERVO551MG AREA MOUNT'I rH B SEE L CD CD 1 -1 FRONTREAR CANOPY bLEHEASS IS SHEET IASE 15 ALUM SNIB11W MWIC SIRE NOTE ALA MATERIAL BALSA IAILESS SPEOFIED [OR THE NEW GOLDEN AGE SPORTSMAN PILOT popular demand new 2% foot scale pilot larger models May easily painted suit particular requirements Other styles sizes including 1 2 le also available GOLDEN AGE WHEELS NEW 1920s 1930s air craft models Featured flexible semi-pneumatic tires paintable wheels Ten sizes ugh 5 diameter Vintage smooth contour styles also available WLLA SEND 50 FOR COMPLETE CATALOG DEPT MA PAWNEE ST SAN MARCOS CA 9 England Glen Alison writes building new stunter foam wing Goldberg retracts states using clockwork timer two microswitches batteries servo going used wing-tip weight enough increase performance merit extra weight mechanical problems Good question Price Adami sin Davis former national cali ber fliers Davis still flying obviously looking something add performance Certainly hope judges will im pressed retracts enough gain some extra points maybe few ex tra impression points will spell difference between mediocre top con tender No doubt cleaner airframe will cut through air lessened drag feel certain amount drag actually helps stunt plane Anyway probably wont see re tracts stunter Gieseke Werwage Jim Lynch Bob Hunt working some retracts Genesis dropped idea favor practice 76 Nats Judging results might have better choice Profile Tanks Charles Hubble wrote Baltimire MD offer some hints profile tank mounting First warns make certain pickup tubing exact center tank V-shape section Solder using solid solder flux Make certain overflow tube extends top tank always cut tube 45-degree angle solder topWP recom mends soldering piece tubing bent 90-degree angle over top vent catch ram air Charles stresses installa tion tank through cutout fuselage pickup tube direct alignment spray bar viewed top As has practice years tank pickup tube should also line up center venturi viewed side However Slow Combat boys have very successful using tanks pickup coming out bottom tank miss cylinder head Either way side view center tank should line up venturi above make certain tank clean clean clean inside before firing up action Gieseke Nobler Plans Tom Dixon nounces plans Gieseke ver sion Nobler outlined De cember 1976 January 1977 issues Model Aviation now available $500 Proceeds plans will go towards sponsoring annual PAMPA stunt contests Atlanta Order Tom 9025 Hurst Court Jonesboro GA 30236 Tel 404-471-3271 Write information PAMPA comments stunt Wynn Paul 1640 May wick Drive Lex KY 40504 Mountaineer/Haught continued page 34 Final sand fuselage fair fin fuselage microballons 5-minute epoxy Shape fillets finger dipped dope thinner before set up Cover fuselage least rear wing dowel pref erably completely tail post 1 -oz fiberglass cloth adhered Hobby Poxy Formula II epoxy glue thinned 100% methanol dry sand smooth fit up aluminum landing skid towhook desired high-start winch launch ing want towhook may substitute 1/8 X ce landing skid Apply filler coat thinned Hobby Poxy Stuff Sand well plans indicate four optional wings Mountaineer foam core 10point chromecoat paper foam core balsa built-up capstrips built up sheet heartily recommend foam co-rewith chromecoat wing strong far cheapest 10-point chromecoat obtained local printshop around 35 cents 20 30 sheet fairly stiff has very slick high gloss finish side takes paint well Foam insulation sheets 1 X 24 X 96 available lumber yards make good inexpensive wing cores 2-in thick ness also available white popcorn foam lightest being about 1 lb/ cu ft blue variety little heavier about 2 lbs/cu ft sands easier stronger normally use white pop corn variety never have cut foam cores its worth give try have articles describing technique cutter may very simple bow strung nichrome wire pinch 008 stranded control-line wire Power can anything variac automobile battery cut cores glue balsa parts white glue evening next evening sand balsa shape leading edge touch up cores Continued page 98 ATTENTION ALL AMA CLUBS Need Working Capital Earn $2000 0 next contest EASY WAY complete docket send $995 pIus 50 cents postage Godfrey & Son Inc 254 Washington St Binghamton NY 13901 June1977 97 SUPER LOW COST way buy sell advertise thru Z R/C TRADERYM ox 833 East Lansing Michigan 48823 * As low 1080 per word * Write Details WINGS EE1iF0XBAT& MORRISON 1977 cATALOG 25$ EPLA-TEcN48500 MC KENZIE HWY IflftFrOtIOflOI VIDA ON 97488 see local hobby dealer o Stahl designa lkJ~ olmast 40 yeors ago 5__ ____________ OGA * los Earl StuNs famous RUBBER & CO2 WINNER AT THE 50th NATS Rondo Spds 58 WINGSPAN Send free brochure 4 FLYLINE MODELS 22 1/2 WINGSPAN 10643 ASHBY PL FAIRFAX VA 22030 RUBBER POWERED FLYING MODELS NEW Kits 28 IN SPAN \PORT$~ORTs475 uis ViN*Off Rite U 13 IN SPAN P-NUT KIT S349~ O ae*Wte~ 13 IN SPAN P-NUTKIT $34916 IN SPAN SPORT $349 Peck-Pefymers PO BOX 2498-AMA Continued page 97 light sanding cover chromecoat Using rubber cement adhesive coat both paper wing core being sure its dry before proceeding covering Lay bottom wing surface chromecoat sup ported flat surface roll wing around leading edge back across top wing surface Take care twist warps wing wing panels now ready joining Sand bevel butts attain required 4 dihedral under tip Join 5-minute epoxy cover joint 4-in wide fiberglass cloth ad hered thinned epoxy Epoxy tip blocks place Sand fill wing ready finish wish use foam core covered balsa may omit spar trailing edge desire built-up wing cut ribs shape stacking seventeen 3/32 balsa rib blanks between root- tip-rib tem plates carve sand shape Lay down leading trailing edges plan add bottom leading edge sheet fit bot tom cap strips Glue bottom spar sheet ing add ribs dry add top spar remove plan Build remaining wing stage join proper di hedral Reinforce spar joints 3/32in dihedral brace cut fit behind spars Fit top leading edge sheeting cap strips sheet center section Glue wing tip blocks place sand completed wing PEANUT SCALE KITS PIETENPOL$329 MILES$329 TURBULENT$329 PIPER J3 CUB$329 ANDREASON$349 COUGAR $349 MUSTANG$349 ZERO-$349 SPORT MODEL KITS STRINGLESS WONDER$249 PECK ROG .$139 KITS 0 PLANS 0 ACCESSORIES CO-2 ENGINES SNARK & BROWN REAL JAPANESE TISSUE-PROPS COMPLETE CATALOG 5O MANY NARD TO FIND ITEMS LA MESA CALIF 92041 PNONE 714 469-8675 714 442-4636 final shape Built-up wings cap strips satis factory flying site free weeds other sharp objects rugged wing fully sheeted variety con struction procedure basically same except cap strips replaced sheet balsa Make up wing skins ad vance construction Sheet balsa straight enough join edge edge out first trimming trim overlap edges joined straightedge down center overlap run along straightedge sharp knife razor blade thus trimming both edges once Any irregularities trimming will correspond sheet matched resulting custom fit Lay down piece Saran Wrap fit edges sheet together holding securely join Zap equivalent An alternate method gluing join sheets masking tape flat Pick up taped sheets fold open joint apply balsa cement Lay sheets back bench tape side down secure until dry Re move tape sand outside surface absolute ultimate strength cover sheeted wing -oz fiberglass cloth adhered Hobby Poxy Formula II thinned 100% methanol brushed through cloth Finish Mountaineer favorite materials As late have using thinned out Hobby Poxy Stuff filling grain dis count-store spray-can enamel color paints dry quickly look great besides costing very little After finishing components reinstall radio hook up controls check trav el check assembled model proper balance noted plans Ballast neces sary little nose heavy OK tail heavy model disastrous Flying Prior launching slope test glide model over level ground deter neutral control settings satis factory model should glide straight no stall diving tendencies Adjust pushrods accordingly have flown hill fore would offer basic comments Launch directly wind angle slope prepared apply slight down elevator avoid stall slopers tend ballon launch get familiar flight characteristics Mountaineer fly figure-eight pattern 100-feet out making turns away hill Let model drift toward slope crosses front prior turning wind next leg flying back toward down wind keep mind ground speed will sum normal flying speed plus wind normal tendency slow model apparent speed going wind normal speed less wind speed can produce unexpected stall hillside landings choice suggest landing low cross-slope pass nose model quartered wind feeding down eleva tor Dont forget hot coffee gets chilly out hill FF Indoor/Tenny continued page 38 actly correct Stand back visually spect wing alignment glue wing posts cabane Fig 8 shows wing should appear note stands just outside dihedral joints primary bracing wires can attached before moving anything Finally Fig 9 Fig 9 shows stands supporting tips dihedral joints glued dotted lines show secondary bracing used Have Stands Will Travel now apparent flat surface con98 Model Aviation 24 lIZ WINGSPAN 5 10% FOR PACKING AND POSTAGE VA RESIDENTS ADD 4% TAX
Edition: Model Aviation - 1977/06
Page Numbers: 32, 33, 34, 35, 97, 98
NO OCR TEXT looking glider low aspect ratio wings proceeded top nearby hill watched utter amazement Greg put sloper through its paces last could enjoy hobby windy days Slope soaring requires wind also re quires hillside facing prevailing wind Surface winds follow contour terrain thus provide upwards flow ing air mass capable supporting model really constantly descending rising air mass problem will getting model down rather keeping up available site has plateau top can fly edge out over slope simply walk back onto plateau area land out area rising air however site terminates ridge will very turbulent area ridge should fly point down slope away turbulence requires hillside landing begins separate relatively delicate thermal soarers rugged slope design flying site ridge category tore up lot gliders learning land among rocks dirt mounds hillside Mountaineer third series gliders designed specifically intermediate flier operating less favorable conditions An enjoyable feature slope soaring close proximity model flier Most flight will relatively wind model orientation easy maintain Slope soaring acrobatics very compatible can get real workout slope compared gentle art thermal soaring Mountaineers wing loading 14 oz/sq ft well suited wind velocities over 8 mph flat-bottom airfoil responsive yet docile favor foam paper wing construction because can build new wing quickly repair ing wing damaged bad hillside landing all-flying stabilator provides smooth control response well goo shock absorbing qualities har landings Rudder area has progressively creased provide good low-speed cc trol particularly during landing proach Mountaineers prede sors well example phoi graphs have utilized Y8 plywood fuse lage sides bottom measure conJune 1977 33 slope soarer highly speciaiizea macnine Mountaineer s wing ioaaing Ot 14 ozIsq tt wail suiteo wino veiocixies Ot man e mpn uinor prefers foam-and-paper panels because finds quicker make new wing repair old Beginning another challenging flight slight ballooning tendency due rising airrequiring slight down avoid stall launching hand must quickly diverted transmitter Below Low pass front flier Turns should away hill until basic soar ing techniques mastered Long gradual slopes like provide smoothest air tributes considerable strength utilized 1/8 mahogany door skins obtainable local lumber yard source ply wood material works easily fairly light cheaper balsa construc tion Construction Begin construction cutting rudder stabilators medium t balsa Sand shape imbed 3/32 ID brass tubing using control horn 3/32 wire joiners installed aid ob taining proper spacing alignment Use epoxy glue balsa filler pieces secure tubes Install Kleet aileron bearings hinges rudder using 3/32 wire pin fin side hinges spacing alignment Cover completed control surfaces lightweight Silkspan Cut out fuselage sides hard t balsa aforementioned ply wood Note fuselage outline between wing mount canopy areas Glue alsa longerons 3/32 X ce canopy rails place sure make right left side drying fabricate ply wood fin assembly necessary adjust hole slot spacing fit control horn have available plywood formers F-I F-2 can made up drilled control rod passage nose block soft pine can laminated common lumber stock Prior joining fuselage sides trim long erons triangle section point indicated aft Join fuselage sides F-i F-2 being sure maintain accurate align ments dry add nose block plywood fin assembly control horn held place short length 3/32 ID brass tubing through front pivot secured washer soldered side Note bearing desirable required omitted secure con trol horn temporarily cotter pin Add top sheeting dorsal fin balsa block between wing canopy Sand ex cess balsa away Glue servo mounts complete ballast box Install radio gear temporarily Mount rudder hinges fin install rudder horn Connect con trols Nyrod favorite equiva lent Use fixed connection stabila tor horn prevent unwanted adjustments Use adjustable clevis servo end Adjust control travel 1 direc tion rudder down stabilators measured leading edge surfaces Anchor Nyrod housings well Remove radio gear install bottom sheeting tail skid Drill holes wing retaining dowels install dowels until sanding filling complete Build canopy frame place insure proper fit Begin protecting fuselage Saran Wrap equivalent prefer full length stiffeners beneath canopy floor automatically provide alignment may wish omit ard use small locating keys instead plastic canopy itself provides adequate rigidity Fabricate canopy floor /8 balsa crossgrain add front rear formers Allow 1/32 canopy thick ness edges Cut down Sig 15-in canopy fit suggest reversing canopy better fit rear stock can opy faces forward glider Prior glu ing canopy floor install desired de tail and/or finish cover contact paperContinued page 97 34 Model Aviation ruu, iur uw vurnuL w pruven accommodation early Heathkit system Canopy retained rubberbanas neturn address carry-over years free flight rudder linkage adjustment brought about cold wind effects nyrod pushrod guide transported site nice warm car reveals simple functional systemessentially Ilfin houses control horn 1 DIHEDRAL DETAIL IB SCALESEOTIORS N FUERGLA5E TAPEL4X 1/4 SPARIIBUILT UP TIP SECTION 10 POINT CSIRONECOAT OVER FOAM CORE10 POINT CIWONSCOAT PAPER IVIA BALSA OVER FOAM COREFOAM WINO TIP SECTION BUILT UP WITH CAP STRIPS BUILT UP SIIEETES WITH 1/W BALSA OMIYSPAR S TE IF SNEETEO I/IS BALSA 0 Il [v32][b-1-10-1-10]] V4S3/4TRAILINGEFOAM WUNG ROOT SECTION EDGE 1/Nil S/A BES w____________________________________________________ FIN DETAIL I____________ IVIS PLYIllS MEDIUM SMEE SANO TO ARIPOB IItit m IItttIIIIIII TUPlMO I/4I1 SIN TRALSig EDGE NUSUCA OWn co NOIBSURE DORSAL0 Pid OIAMIED FOR OLMITY SERVOS EE 851011 ISWNNYIDOO OR EGIAII RUOER CONTROL SEE SloE ELEVATOR FINE ROSE -OCII CONTROL Ti RIIDOER STAt VA F-IPSSMEASURES PINE SERVO551MG AREA MOUNT'I rH B SEE L CD CD 1 -1 FRONTREAR CANOPY bLEHEASS IS SHEET IASE 15 ALUM SNIB11W MWIC SIRE NOTE ALA MATERIAL BALSA IAILESS SPEOFIED [OR THE NEW GOLDEN AGE SPORTSMAN PILOT popular demand new 2% foot scale pilot larger models May easily painted suit particular requirements Other styles sizes including 1 2 le also available GOLDEN AGE WHEELS NEW 1920s 1930s air craft models Featured flexible semi-pneumatic tires paintable wheels Ten sizes ugh 5 diameter Vintage smooth contour styles also available WLLA SEND 50 FOR COMPLETE CATALOG DEPT MA PAWNEE ST SAN MARCOS CA 9 England Glen Alison writes building new stunter foam wing Goldberg retracts states using clockwork timer two microswitches batteries servo going used wing-tip weight enough increase performance merit extra weight mechanical problems Good question Price Adami sin Davis former national cali ber fliers Davis still flying obviously looking something add performance Certainly hope judges will im pressed retracts enough gain some extra points maybe few ex tra impression points will spell difference between mediocre top con tender No doubt cleaner airframe will cut through air lessened drag feel certain amount drag actually helps stunt plane Anyway probably wont see re tracts stunter Gieseke Werwage Jim Lynch Bob Hunt working some retracts Genesis dropped idea favor practice 76 Nats Judging results might have better choice Profile Tanks Charles Hubble wrote Baltimire MD offer some hints profile tank mounting First warns make certain pickup tubing exact center tank V-shape section Solder using solid solder flux Make certain overflow tube extends top tank always cut tube 45-degree angle solder topWP recom mends soldering piece tubing bent 90-degree angle over top vent catch ram air Charles stresses installa tion tank through cutout fuselage pickup tube direct alignment spray bar viewed top As has practice years tank pickup tube should also line up center venturi viewed side However Slow Combat boys have very successful using tanks pickup coming out bottom tank miss cylinder head Either way side view center tank should line up venturi above make certain tank clean clean clean inside before firing up action Gieseke Nobler Plans Tom Dixon nounces plans Gieseke ver sion Nobler outlined De cember 1976 January 1977 issues Model Aviation now available $500 Proceeds plans will go towards sponsoring annual PAMPA stunt contests Atlanta Order Tom 9025 Hurst Court Jonesboro GA 30236 Tel 404-471-3271 Write information PAMPA comments stunt Wynn Paul 1640 May wick Drive Lex KY 40504 Mountaineer/Haught continued page 34 Final sand fuselage fair fin fuselage microballons 5-minute epoxy Shape fillets finger dipped dope thinner before set up Cover fuselage least rear wing dowel pref erably completely tail post 1 -oz fiberglass cloth adhered Hobby Poxy Formula II epoxy glue thinned 100% methanol dry sand smooth fit up aluminum landing skid towhook desired high-start winch launch ing want towhook may substitute 1/8 X ce landing skid Apply filler coat thinned Hobby Poxy Stuff Sand well plans indicate four optional wings Mountaineer foam core 10point chromecoat paper foam core balsa built-up capstrips built up sheet heartily recommend foam co-rewith chromecoat wing strong far cheapest 10-point chromecoat obtained local printshop around 35 cents 20 30 sheet fairly stiff has very slick high gloss finish side takes paint well Foam insulation sheets 1 X 24 X 96 available lumber yards make good inexpensive wing cores 2-in thick ness also available white popcorn foam lightest being about 1 lb/ cu ft blue variety little heavier about 2 lbs/cu ft sands easier stronger normally use white pop corn variety never have cut foam cores its worth give try have articles describing technique cutter may very simple bow strung nichrome wire pinch 008 stranded control-line wire Power can anything variac automobile battery cut cores glue balsa parts white glue evening next evening sand balsa shape leading edge touch up cores Continued page 98 ATTENTION ALL AMA CLUBS Need Working Capital Earn $2000 0 next contest EASY WAY complete docket send $995 pIus 50 cents postage Godfrey & Son Inc 254 Washington St Binghamton NY 13901 June1977 97 SUPER LOW COST way buy sell advertise thru Z R/C TRADERYM ox 833 East Lansing Michigan 48823 * As low 1080 per word * Write Details WINGS EE1iF0XBAT& MORRISON 1977 cATALOG 25$ EPLA-TEcN48500 MC KENZIE HWY IflftFrOtIOflOI VIDA ON 97488 see local hobby dealer o Stahl designa lkJ~ olmast 40 yeors ago 5__ ____________ OGA * los Earl StuNs famous RUBBER & CO2 WINNER AT THE 50th NATS Rondo Spds 58 WINGSPAN Send free brochure 4 FLYLINE MODELS 22 1/2 WINGSPAN 10643 ASHBY PL FAIRFAX VA 22030 RUBBER POWERED FLYING MODELS NEW Kits 28 IN SPAN \PORT$~ORTs475 uis ViN*Off Rite U 13 IN SPAN P-NUT KIT S349~ O ae*Wte~ 13 IN SPAN P-NUTKIT $34916 IN SPAN SPORT $349 Peck-Pefymers PO BOX 2498-AMA Continued page 97 light sanding cover chromecoat Using rubber cement adhesive coat both paper wing core being sure its dry before proceeding covering Lay bottom wing surface chromecoat sup ported flat surface roll wing around leading edge back across top wing surface Take care twist warps wing wing panels now ready joining Sand bevel butts attain required 4 dihedral under tip Join 5-minute epoxy cover joint 4-in wide fiberglass cloth ad hered thinned epoxy Epoxy tip blocks place Sand fill wing ready finish wish use foam core covered balsa may omit spar trailing edge desire built-up wing cut ribs shape stacking seventeen 3/32 balsa rib blanks between root- tip-rib tem plates carve sand shape Lay down leading trailing edges plan add bottom leading edge sheet fit bot tom cap strips Glue bottom spar sheet ing add ribs dry add top spar remove plan Build remaining wing stage join proper di hedral Reinforce spar joints 3/32in dihedral brace cut fit behind spars Fit top leading edge sheeting cap strips sheet center section Glue wing tip blocks place sand completed wing PEANUT SCALE KITS PIETENPOL$329 MILES$329 TURBULENT$329 PIPER J3 CUB$329 ANDREASON$349 COUGAR $349 MUSTANG$349 ZERO-$349 SPORT MODEL KITS STRINGLESS WONDER$249 PECK ROG .$139 KITS 0 PLANS 0 ACCESSORIES CO-2 ENGINES SNARK & BROWN REAL JAPANESE TISSUE-PROPS COMPLETE CATALOG 5O MANY NARD TO FIND ITEMS LA MESA CALIF 92041 PNONE 714 469-8675 714 442-4636 final shape Built-up wings cap strips satis factory flying site free weeds other sharp objects rugged wing fully sheeted variety con struction procedure basically same except cap strips replaced sheet balsa Make up wing skins ad vance construction Sheet balsa straight enough join edge edge out first trimming trim overlap edges joined straightedge down center overlap run along straightedge sharp knife razor blade thus trimming both edges once Any irregularities trimming will correspond sheet matched resulting custom fit Lay down piece Saran Wrap fit edges sheet together holding securely join Zap equivalent An alternate method gluing join sheets masking tape flat Pick up taped sheets fold open joint apply balsa cement Lay sheets back bench tape side down secure until dry Re move tape sand outside surface absolute ultimate strength cover sheeted wing -oz fiberglass cloth adhered Hobby Poxy Formula II thinned 100% methanol brushed through cloth Finish Mountaineer favorite materials As late have using thinned out Hobby Poxy Stuff filling grain dis count-store spray-can enamel color paints dry quickly look great besides costing very little After finishing components reinstall radio hook up controls check trav el check assembled model proper balance noted plans Ballast neces sary little nose heavy OK tail heavy model disastrous Flying Prior launching slope test glide model over level ground deter neutral control settings satis factory model should glide straight no stall diving tendencies Adjust pushrods accordingly have flown hill fore would offer basic comments Launch directly wind angle slope prepared apply slight down elevator avoid stall slopers tend ballon launch get familiar flight characteristics Mountaineer fly figure-eight pattern 100-feet out making turns away hill Let model drift toward slope crosses front prior turning wind next leg flying back toward down wind keep mind ground speed will sum normal flying speed plus wind normal tendency slow model apparent speed going wind normal speed less wind speed can produce unexpected stall hillside landings choice suggest landing low cross-slope pass nose model quartered wind feeding down eleva tor Dont forget hot coffee gets chilly out hill FF Indoor/Tenny continued page 38 actly correct Stand back visually spect wing alignment glue wing posts cabane Fig 8 shows wing should appear note stands just outside dihedral joints primary bracing wires can attached before moving anything Finally Fig 9 Fig 9 shows stands supporting tips dihedral joints glued dotted lines show secondary bracing used Have Stands Will Travel now apparent flat surface con98 Model Aviation 24 lIZ WINGSPAN 5 10% FOR PACKING AND POSTAGE VA RESIDENTS ADD 4% TAX
Edition: Model Aviation - 1977/06
Page Numbers: 32, 33, 34, 35, 97, 98
NO OCR TEXT looking glider low aspect ratio wings proceeded top nearby hill watched utter amazement Greg put sloper through its paces last could enjoy hobby windy days Slope soaring requires wind also re quires hillside facing prevailing wind Surface winds follow contour terrain thus provide upwards flow ing air mass capable supporting model really constantly descending rising air mass problem will getting model down rather keeping up available site has plateau top can fly edge out over slope simply walk back onto plateau area land out area rising air however site terminates ridge will very turbulent area ridge should fly point down slope away turbulence requires hillside landing begins separate relatively delicate thermal soarers rugged slope design flying site ridge category tore up lot gliders learning land among rocks dirt mounds hillside Mountaineer third series gliders designed specifically intermediate flier operating less favorable conditions An enjoyable feature slope soaring close proximity model flier Most flight will relatively wind model orientation easy maintain Slope soaring acrobatics very compatible can get real workout slope compared gentle art thermal soaring Mountaineers wing loading 14 oz/sq ft well suited wind velocities over 8 mph flat-bottom airfoil responsive yet docile favor foam paper wing construction because can build new wing quickly repair ing wing damaged bad hillside landing all-flying stabilator provides smooth control response well goo shock absorbing qualities har landings Rudder area has progressively creased provide good low-speed cc trol particularly during landing proach Mountaineers prede sors well example phoi graphs have utilized Y8 plywood fuse lage sides bottom measure conJune 1977 33 slope soarer highly speciaiizea macnine Mountaineer s wing ioaaing Ot 14 ozIsq tt wail suiteo wino veiocixies Ot man e mpn uinor prefers foam-and-paper panels because finds quicker make new wing repair old Beginning another challenging flight slight ballooning tendency due rising airrequiring slight down avoid stall launching hand must quickly diverted transmitter Below Low pass front flier Turns should away hill until basic soar ing techniques mastered Long gradual slopes like provide smoothest air tributes considerable strength utilized 1/8 mahogany door skins obtainable local lumber yard source ply wood material works easily fairly light cheaper balsa construc tion Construction Begin construction cutting rudder stabilators medium t balsa Sand shape imbed 3/32 ID brass tubing using control horn 3/32 wire joiners installed aid ob taining proper spacing alignment Use epoxy glue balsa filler pieces secure tubes Install Kleet aileron bearings hinges rudder using 3/32 wire pin fin side hinges spacing alignment Cover completed control surfaces lightweight Silkspan Cut out fuselage sides hard t balsa aforementioned ply wood Note fuselage outline between wing mount canopy areas Glue alsa longerons 3/32 X ce canopy rails place sure make right left side drying fabricate ply wood fin assembly necessary adjust hole slot spacing fit control horn have available plywood formers F-I F-2 can made up drilled control rod passage nose block soft pine can laminated common lumber stock Prior joining fuselage sides trim long erons triangle section point indicated aft Join fuselage sides F-i F-2 being sure maintain accurate align ments dry add nose block plywood fin assembly control horn held place short length 3/32 ID brass tubing through front pivot secured washer soldered side Note bearing desirable required omitted secure con trol horn temporarily cotter pin Add top sheeting dorsal fin balsa block between wing canopy Sand ex cess balsa away Glue servo mounts complete ballast box Install radio gear temporarily Mount rudder hinges fin install rudder horn Connect con trols Nyrod favorite equiva lent Use fixed connection stabila tor horn prevent unwanted adjustments Use adjustable clevis servo end Adjust control travel 1 direc tion rudder down stabilators measured leading edge surfaces Anchor Nyrod housings well Remove radio gear install bottom sheeting tail skid Drill holes wing retaining dowels install dowels until sanding filling complete Build canopy frame place insure proper fit Begin protecting fuselage Saran Wrap equivalent prefer full length stiffeners beneath canopy floor automatically provide alignment may wish omit ard use small locating keys instead plastic canopy itself provides adequate rigidity Fabricate canopy floor /8 balsa crossgrain add front rear formers Allow 1/32 canopy thick ness edges Cut down Sig 15-in canopy fit suggest reversing canopy better fit rear stock can opy faces forward glider Prior glu ing canopy floor install desired de tail and/or finish cover contact paperContinued page 97 34 Model Aviation ruu, iur uw vurnuL w pruven accommodation early Heathkit system Canopy retained rubberbanas neturn address carry-over years free flight rudder linkage adjustment brought about cold wind effects nyrod pushrod guide transported site nice warm car reveals simple functional systemessentially Ilfin houses control horn 1 DIHEDRAL DETAIL IB SCALESEOTIORS N FUERGLA5E TAPEL4X 1/4 SPARIIBUILT UP TIP SECTION 10 POINT CSIRONECOAT OVER FOAM CORE10 POINT CIWONSCOAT PAPER IVIA BALSA OVER FOAM COREFOAM WINO TIP SECTION BUILT UP WITH CAP STRIPS BUILT UP SIIEETES WITH 1/W BALSA OMIYSPAR S TE IF SNEETEO I/IS BALSA 0 Il [v32][b-1-10-1-10]] V4S3/4TRAILINGEFOAM WUNG ROOT SECTION EDGE 1/Nil S/A BES w____________________________________________________ FIN DETAIL I____________ IVIS PLYIllS MEDIUM SMEE SANO TO ARIPOB IItit m IItttIIIIIII TUPlMO I/4I1 SIN TRALSig EDGE NUSUCA OWn co NOIBSURE DORSAL0 Pid OIAMIED FOR OLMITY SERVOS EE 851011 ISWNNYIDOO OR EGIAII RUOER CONTROL SEE SloE ELEVATOR FINE ROSE -OCII CONTROL Ti RIIDOER STAt VA F-IPSSMEASURES PINE SERVO551MG AREA MOUNT'I rH B SEE L CD CD 1 -1 FRONTREAR CANOPY bLEHEASS IS SHEET IASE 15 ALUM SNIB11W MWIC SIRE NOTE ALA MATERIAL BALSA IAILESS SPEOFIED [OR THE NEW GOLDEN AGE SPORTSMAN PILOT popular demand new 2% foot scale pilot larger models May easily painted suit particular requirements Other styles sizes including 1 2 le also available GOLDEN AGE WHEELS NEW 1920s 1930s air craft models Featured flexible semi-pneumatic tires paintable wheels Ten sizes ugh 5 diameter Vintage smooth contour styles also available WLLA SEND 50 FOR COMPLETE CATALOG DEPT MA PAWNEE ST SAN MARCOS CA 9 England Glen Alison writes building new stunter foam wing Goldberg retracts states using clockwork timer two microswitches batteries servo going used wing-tip weight enough increase performance merit extra weight mechanical problems Good question Price Adami sin Davis former national cali ber fliers Davis still flying obviously looking something add performance Certainly hope judges will im pressed retracts enough gain some extra points maybe few ex tra impression points will spell difference between mediocre top con tender No doubt cleaner airframe will cut through air lessened drag feel certain amount drag actually helps stunt plane Anyway probably wont see re tracts stunter Gieseke Werwage Jim Lynch Bob Hunt working some retracts Genesis dropped idea favor practice 76 Nats Judging results might have better choice Profile Tanks Charles Hubble wrote Baltimire MD offer some hints profile tank mounting First warns make certain pickup tubing exact center tank V-shape section Solder using solid solder flux Make certain overflow tube extends top tank always cut tube 45-degree angle solder topWP recom mends soldering piece tubing bent 90-degree angle over top vent catch ram air Charles stresses installa tion tank through cutout fuselage pickup tube direct alignment spray bar viewed top As has practice years tank pickup tube should also line up center venturi viewed side However Slow Combat boys have very successful using tanks pickup coming out bottom tank miss cylinder head Either way side view center tank should line up venturi above make certain tank clean clean clean inside before firing up action Gieseke Nobler Plans Tom Dixon nounces plans Gieseke ver sion Nobler outlined De cember 1976 January 1977 issues Model Aviation now available $500 Proceeds plans will go towards sponsoring annual PAMPA stunt contests Atlanta Order Tom 9025 Hurst Court Jonesboro GA 30236 Tel 404-471-3271 Write information PAMPA comments stunt Wynn Paul 1640 May wick Drive Lex KY 40504 Mountaineer/Haught continued page 34 Final sand fuselage fair fin fuselage microballons 5-minute epoxy Shape fillets finger dipped dope thinner before set up Cover fuselage least rear wing dowel pref erably completely tail post 1 -oz fiberglass cloth adhered Hobby Poxy Formula II epoxy glue thinned 100% methanol dry sand smooth fit up aluminum landing skid towhook desired high-start winch launch ing want towhook may substitute 1/8 X ce landing skid Apply filler coat thinned Hobby Poxy Stuff Sand well plans indicate four optional wings Mountaineer foam core 10point chromecoat paper foam core balsa built-up capstrips built up sheet heartily recommend foam co-rewith chromecoat wing strong far cheapest 10-point chromecoat obtained local printshop around 35 cents 20 30 sheet fairly stiff has very slick high gloss finish side takes paint well Foam insulation sheets 1 X 24 X 96 available lumber yards make good inexpensive wing cores 2-in thick ness also available white popcorn foam lightest being about 1 lb/ cu ft blue variety little heavier about 2 lbs/cu ft sands easier stronger normally use white pop corn variety never have cut foam cores its worth give try have articles describing technique cutter may very simple bow strung nichrome wire pinch 008 stranded control-line wire Power can anything variac automobile battery cut cores glue balsa parts white glue evening next evening sand balsa shape leading edge touch up cores Continued page 98 ATTENTION ALL AMA CLUBS Need Working Capital Earn $2000 0 next contest EASY WAY complete docket send $995 pIus 50 cents postage Godfrey & Son Inc 254 Washington St Binghamton NY 13901 June1977 97 SUPER LOW COST way buy sell advertise thru Z R/C TRADERYM ox 833 East Lansing Michigan 48823 * As low 1080 per word * Write Details WINGS EE1iF0XBAT& MORRISON 1977 cATALOG 25$ EPLA-TEcN48500 MC KENZIE HWY IflftFrOtIOflOI VIDA ON 97488 see local hobby dealer o Stahl designa lkJ~ olmast 40 yeors ago 5__ ____________ OGA * los Earl StuNs famous RUBBER & CO2 WINNER AT THE 50th NATS Rondo Spds 58 WINGSPAN Send free brochure 4 FLYLINE MODELS 22 1/2 WINGSPAN 10643 ASHBY PL FAIRFAX VA 22030 RUBBER POWERED FLYING MODELS NEW Kits 28 IN SPAN \PORT$~ORTs475 uis ViN*Off Rite U 13 IN SPAN P-NUT KIT S349~ O ae*Wte~ 13 IN SPAN P-NUTKIT $34916 IN SPAN SPORT $349 Peck-Pefymers PO BOX 2498-AMA Continued page 97 light sanding cover chromecoat Using rubber cement adhesive coat both paper wing core being sure its dry before proceeding covering Lay bottom wing surface chromecoat sup ported flat surface roll wing around leading edge back across top wing surface Take care twist warps wing wing panels now ready joining Sand bevel butts attain required 4 dihedral under tip Join 5-minute epoxy cover joint 4-in wide fiberglass cloth ad hered thinned epoxy Epoxy tip blocks place Sand fill wing ready finish wish use foam core covered balsa may omit spar trailing edge desire built-up wing cut ribs shape stacking seventeen 3/32 balsa rib blanks between root- tip-rib tem plates carve sand shape Lay down leading trailing edges plan add bottom leading edge sheet fit bot tom cap strips Glue bottom spar sheet ing add ribs dry add top spar remove plan Build remaining wing stage join proper di hedral Reinforce spar joints 3/32in dihedral brace cut fit behind spars Fit top leading edge sheeting cap strips sheet center section Glue wing tip blocks place sand completed wing PEANUT SCALE KITS PIETENPOL$329 MILES$329 TURBULENT$329 PIPER J3 CUB$329 ANDREASON$349 COUGAR $349 MUSTANG$349 ZERO-$349 SPORT MODEL KITS STRINGLESS WONDER$249 PECK ROG .$139 KITS 0 PLANS 0 ACCESSORIES CO-2 ENGINES SNARK & BROWN REAL JAPANESE TISSUE-PROPS COMPLETE CATALOG 5O MANY NARD TO FIND ITEMS LA MESA CALIF 92041 PNONE 714 469-8675 714 442-4636 final shape Built-up wings cap strips satis factory flying site free weeds other sharp objects rugged wing fully sheeted variety con struction procedure basically same except cap strips replaced sheet balsa Make up wing skins ad vance construction Sheet balsa straight enough join edge edge out first trimming trim overlap edges joined straightedge down center overlap run along straightedge sharp knife razor blade thus trimming both edges once Any irregularities trimming will correspond sheet matched resulting custom fit Lay down piece Saran Wrap fit edges sheet together holding securely join Zap equivalent An alternate method gluing join sheets masking tape flat Pick up taped sheets fold open joint apply balsa cement Lay sheets back bench tape side down secure until dry Re move tape sand outside surface absolute ultimate strength cover sheeted wing -oz fiberglass cloth adhered Hobby Poxy Formula II thinned 100% methanol brushed through cloth Finish Mountaineer favorite materials As late have using thinned out Hobby Poxy Stuff filling grain dis count-store spray-can enamel color paints dry quickly look great besides costing very little After finishing components reinstall radio hook up controls check trav el check assembled model proper balance noted plans Ballast neces sary little nose heavy OK tail heavy model disastrous Flying Prior launching slope test glide model over level ground deter neutral control settings satis factory model should glide straight no stall diving tendencies Adjust pushrods accordingly have flown hill fore would offer basic comments Launch directly wind angle slope prepared apply slight down elevator avoid stall slopers tend ballon launch get familiar flight characteristics Mountaineer fly figure-eight pattern 100-feet out making turns away hill Let model drift toward slope crosses front prior turning wind next leg flying back toward down wind keep mind ground speed will sum normal flying speed plus wind normal tendency slow model apparent speed going wind normal speed less wind speed can produce unexpected stall hillside landings choice suggest landing low cross-slope pass nose model quartered wind feeding down eleva tor Dont forget hot coffee gets chilly out hill FF Indoor/Tenny continued page 38 actly correct Stand back visually spect wing alignment glue wing posts cabane Fig 8 shows wing should appear note stands just outside dihedral joints primary bracing wires can attached before moving anything Finally Fig 9 Fig 9 shows stands supporting tips dihedral joints glued dotted lines show secondary bracing used Have Stands Will Travel now apparent flat surface con98 Model Aviation 24 lIZ WINGSPAN 5 10% FOR PACKING AND POSTAGE VA RESIDENTS ADD 4% TAX
Edition: Model Aviation - 1977/06
Page Numbers: 32, 33, 34, 35, 97, 98
NO OCR TEXT looking glider low aspect ratio wings proceeded top nearby hill watched utter amazement Greg put sloper through its paces last could enjoy hobby windy days Slope soaring requires wind also re quires hillside facing prevailing wind Surface winds follow contour terrain thus provide upwards flow ing air mass capable supporting model really constantly descending rising air mass problem will getting model down rather keeping up available site has plateau top can fly edge out over slope simply walk back onto plateau area land out area rising air however site terminates ridge will very turbulent area ridge should fly point down slope away turbulence requires hillside landing begins separate relatively delicate thermal soarers rugged slope design flying site ridge category tore up lot gliders learning land among rocks dirt mounds hillside Mountaineer third series gliders designed specifically intermediate flier operating less favorable conditions An enjoyable feature slope soaring close proximity model flier Most flight will relatively wind model orientation easy maintain Slope soaring acrobatics very compatible can get real workout slope compared gentle art thermal soaring Mountaineers wing loading 14 oz/sq ft well suited wind velocities over 8 mph flat-bottom airfoil responsive yet docile favor foam paper wing construction because can build new wing quickly repair ing wing damaged bad hillside landing all-flying stabilator provides smooth control response well goo shock absorbing qualities har landings Rudder area has progressively creased provide good low-speed cc trol particularly during landing proach Mountaineers prede sors well example phoi graphs have utilized Y8 plywood fuse lage sides bottom measure conJune 1977 33 slope soarer highly speciaiizea macnine Mountaineer s wing ioaaing Ot 14 ozIsq tt wail suiteo wino veiocixies Ot man e mpn uinor prefers foam-and-paper panels because finds quicker make new wing repair old Beginning another challenging flight slight ballooning tendency due rising airrequiring slight down avoid stall launching hand must quickly diverted transmitter Below Low pass front flier Turns should away hill until basic soar ing techniques mastered Long gradual slopes like provide smoothest air tributes considerable strength utilized 1/8 mahogany door skins obtainable local lumber yard source ply wood material works easily fairly light cheaper balsa construc tion Construction Begin construction cutting rudder stabilators medium t balsa Sand shape imbed 3/32 ID brass tubing using control horn 3/32 wire joiners installed aid ob taining proper spacing alignment Use epoxy glue balsa filler pieces secure tubes Install Kleet aileron bearings hinges rudder using 3/32 wire pin fin side hinges spacing alignment Cover completed control surfaces lightweight Silkspan Cut out fuselage sides hard t balsa aforementioned ply wood Note fuselage outline between wing mount canopy areas Glue alsa longerons 3/32 X ce canopy rails place sure make right left side drying fabricate ply wood fin assembly necessary adjust hole slot spacing fit control horn have available plywood formers F-I F-2 can made up drilled control rod passage nose block soft pine can laminated common lumber stock Prior joining fuselage sides trim long erons triangle section point indicated aft Join fuselage sides F-i F-2 being sure maintain accurate align ments dry add nose block plywood fin assembly control horn held place short length 3/32 ID brass tubing through front pivot secured washer soldered side Note bearing desirable required omitted secure con trol horn temporarily cotter pin Add top sheeting dorsal fin balsa block between wing canopy Sand ex cess balsa away Glue servo mounts complete ballast box Install radio gear temporarily Mount rudder hinges fin install rudder horn Connect con trols Nyrod favorite equiva lent Use fixed connection stabila tor horn prevent unwanted adjustments Use adjustable clevis servo end Adjust control travel 1 direc tion rudder down stabilators measured leading edge surfaces Anchor Nyrod housings well Remove radio gear install bottom sheeting tail skid Drill holes wing retaining dowels install dowels until sanding filling complete Build canopy frame place insure proper fit Begin protecting fuselage Saran Wrap equivalent prefer full length stiffeners beneath canopy floor automatically provide alignment may wish omit ard use small locating keys instead plastic canopy itself provides adequate rigidity Fabricate canopy floor /8 balsa crossgrain add front rear formers Allow 1/32 canopy thick ness edges Cut down Sig 15-in canopy fit suggest reversing canopy better fit rear stock can opy faces forward glider Prior glu ing canopy floor install desired de tail and/or finish cover contact paperContinued page 97 34 Model Aviation ruu, iur uw vurnuL w pruven accommodation early Heathkit system Canopy retained rubberbanas neturn address carry-over years free flight rudder linkage adjustment brought about cold wind effects nyrod pushrod guide transported site nice warm car reveals simple functional systemessentially Ilfin houses control horn 1 DIHEDRAL DETAIL IB SCALESEOTIORS N FUERGLA5E TAPEL4X 1/4 SPARIIBUILT UP TIP SECTION 10 POINT CSIRONECOAT OVER FOAM CORE10 POINT CIWONSCOAT PAPER IVIA BALSA OVER FOAM COREFOAM WINO TIP SECTION BUILT UP WITH CAP STRIPS BUILT UP SIIEETES WITH 1/W BALSA OMIYSPAR S TE IF SNEETEO I/IS BALSA 0 Il [v32][b-1-10-1-10]] V4S3/4TRAILINGEFOAM WUNG ROOT SECTION EDGE 1/Nil S/A BES w____________________________________________________ FIN DETAIL I____________ IVIS PLYIllS MEDIUM SMEE SANO TO ARIPOB IItit m IItttIIIIIII TUPlMO I/4I1 SIN TRALSig EDGE NUSUCA OWn co NOIBSURE DORSAL0 Pid OIAMIED FOR OLMITY SERVOS EE 851011 ISWNNYIDOO OR EGIAII RUOER CONTROL SEE SloE ELEVATOR FINE ROSE -OCII CONTROL Ti RIIDOER STAt VA F-IPSSMEASURES PINE SERVO551MG AREA MOUNT'I rH B SEE L CD CD 1 -1 FRONTREAR CANOPY bLEHEASS IS SHEET IASE 15 ALUM SNIB11W MWIC SIRE NOTE ALA MATERIAL BALSA IAILESS SPEOFIED [OR THE NEW GOLDEN AGE SPORTSMAN PILOT popular demand new 2% foot scale pilot larger models May easily painted suit particular requirements Other styles sizes including 1 2 le also available GOLDEN AGE WHEELS NEW 1920s 1930s air craft models Featured flexible semi-pneumatic tires paintable wheels Ten sizes ugh 5 diameter Vintage smooth contour styles also available WLLA SEND 50 FOR COMPLETE CATALOG DEPT MA PAWNEE ST SAN MARCOS CA 9 England Glen Alison writes building new stunter foam wing Goldberg retracts states using clockwork timer two microswitches batteries servo going used wing-tip weight enough increase performance merit extra weight mechanical problems Good question Price Adami sin Davis former national cali ber fliers Davis still flying obviously looking something add performance Certainly hope judges will im pressed retracts enough gain some extra points maybe few ex tra impression points will spell difference between mediocre top con tender No doubt cleaner airframe will cut through air lessened drag feel certain amount drag actually helps stunt plane Anyway probably wont see re tracts stunter Gieseke Werwage Jim Lynch Bob Hunt working some retracts Genesis dropped idea favor practice 76 Nats Judging results might have better choice Profile Tanks Charles Hubble wrote Baltimire MD offer some hints profile tank mounting First warns make certain pickup tubing exact center tank V-shape section Solder using solid solder flux Make certain overflow tube extends top tank always cut tube 45-degree angle solder topWP recom mends soldering piece tubing bent 90-degree angle over top vent catch ram air Charles stresses installa tion tank through cutout fuselage pickup tube direct alignment spray bar viewed top As has practice years tank pickup tube should also line up center venturi viewed side However Slow Combat boys have very successful using tanks pickup coming out bottom tank miss cylinder head Either way side view center tank should line up venturi above make certain tank clean clean clean inside before firing up action Gieseke Nobler Plans Tom Dixon nounces plans Gieseke ver sion Nobler outlined De cember 1976 January 1977 issues Model Aviation now available $500 Proceeds plans will go towards sponsoring annual PAMPA stunt contests Atlanta Order Tom 9025 Hurst Court Jonesboro GA 30236 Tel 404-471-3271 Write information PAMPA comments stunt Wynn Paul 1640 May wick Drive Lex KY 40504 Mountaineer/Haught continued page 34 Final sand fuselage fair fin fuselage microballons 5-minute epoxy Shape fillets finger dipped dope thinner before set up Cover fuselage least rear wing dowel pref erably completely tail post 1 -oz fiberglass cloth adhered Hobby Poxy Formula II epoxy glue thinned 100% methanol dry sand smooth fit up aluminum landing skid towhook desired high-start winch launch ing want towhook may substitute 1/8 X ce landing skid Apply filler coat thinned Hobby Poxy Stuff Sand well plans indicate four optional wings Mountaineer foam core 10point chromecoat paper foam core balsa built-up capstrips built up sheet heartily recommend foam co-rewith chromecoat wing strong far cheapest 10-point chromecoat obtained local printshop around 35 cents 20 30 sheet fairly stiff has very slick high gloss finish side takes paint well Foam insulation sheets 1 X 24 X 96 available lumber yards make good inexpensive wing cores 2-in thick ness also available white popcorn foam lightest being about 1 lb/ cu ft blue variety little heavier about 2 lbs/cu ft sands easier stronger normally use white pop corn variety never have cut foam cores its worth give try have articles describing technique cutter may very simple bow strung nichrome wire pinch 008 stranded control-line wire Power can anything variac automobile battery cut cores glue balsa parts white glue evening next evening sand balsa shape leading edge touch up cores Continued page 98 ATTENTION ALL AMA CLUBS Need Working Capital Earn $2000 0 next contest EASY WAY complete docket send $995 pIus 50 cents postage Godfrey & Son Inc 254 Washington St Binghamton NY 13901 June1977 97 SUPER LOW COST way buy sell advertise thru Z R/C TRADERYM ox 833 East Lansing Michigan 48823 * As low 1080 per word * Write Details WINGS EE1iF0XBAT& MORRISON 1977 cATALOG 25$ EPLA-TEcN48500 MC KENZIE HWY IflftFrOtIOflOI VIDA ON 97488 see local hobby dealer o Stahl designa lkJ~ olmast 40 yeors ago 5__ ____________ OGA * los Earl StuNs famous RUBBER & CO2 WINNER AT THE 50th NATS Rondo Spds 58 WINGSPAN Send free brochure 4 FLYLINE MODELS 22 1/2 WINGSPAN 10643 ASHBY PL FAIRFAX VA 22030 RUBBER POWERED FLYING MODELS NEW Kits 28 IN SPAN \PORT$~ORTs475 uis ViN*Off Rite U 13 IN SPAN P-NUT KIT S349~ O ae*Wte~ 13 IN SPAN P-NUTKIT $34916 IN SPAN SPORT $349 Peck-Pefymers PO BOX 2498-AMA Continued page 97 light sanding cover chromecoat Using rubber cement adhesive coat both paper wing core being sure its dry before proceeding covering Lay bottom wing surface chromecoat sup ported flat surface roll wing around leading edge back across top wing surface Take care twist warps wing wing panels now ready joining Sand bevel butts attain required 4 dihedral under tip Join 5-minute epoxy cover joint 4-in wide fiberglass cloth ad hered thinned epoxy Epoxy tip blocks place Sand fill wing ready finish wish use foam core covered balsa may omit spar trailing edge desire built-up wing cut ribs shape stacking seventeen 3/32 balsa rib blanks between root- tip-rib tem plates carve sand shape Lay down leading trailing edges plan add bottom leading edge sheet fit bot tom cap strips Glue bottom spar sheet ing add ribs dry add top spar remove plan Build remaining wing stage join proper di hedral Reinforce spar joints 3/32in dihedral brace cut fit behind spars Fit top leading edge sheeting cap strips sheet center section Glue wing tip blocks place sand completed wing PEANUT SCALE KITS PIETENPOL$329 MILES$329 TURBULENT$329 PIPER J3 CUB$329 ANDREASON$349 COUGAR $349 MUSTANG$349 ZERO-$349 SPORT MODEL KITS STRINGLESS WONDER$249 PECK ROG .$139 KITS 0 PLANS 0 ACCESSORIES CO-2 ENGINES SNARK & BROWN REAL JAPANESE TISSUE-PROPS COMPLETE CATALOG 5O MANY NARD TO FIND ITEMS LA MESA CALIF 92041 PNONE 714 469-8675 714 442-4636 final shape Built-up wings cap strips satis factory flying site free weeds other sharp objects rugged wing fully sheeted variety con struction procedure basically same except cap strips replaced sheet balsa Make up wing skins ad vance construction Sheet balsa straight enough join edge edge out first trimming trim overlap edges joined straightedge down center overlap run along straightedge sharp knife razor blade thus trimming both edges once Any irregularities trimming will correspond sheet matched resulting custom fit Lay down piece Saran Wrap fit edges sheet together holding securely join Zap equivalent An alternate method gluing join sheets masking tape flat Pick up taped sheets fold open joint apply balsa cement Lay sheets back bench tape side down secure until dry Re move tape sand outside surface absolute ultimate strength cover sheeted wing -oz fiberglass cloth adhered Hobby Poxy Formula II thinned 100% methanol brushed through cloth Finish Mountaineer favorite materials As late have using thinned out Hobby Poxy Stuff filling grain dis count-store spray-can enamel color paints dry quickly look great besides costing very little After finishing components reinstall radio hook up controls check trav el check assembled model proper balance noted plans Ballast neces sary little nose heavy OK tail heavy model disastrous Flying Prior launching slope test glide model over level ground deter neutral control settings satis factory model should glide straight no stall diving tendencies Adjust pushrods accordingly have flown hill fore would offer basic comments Launch directly wind angle slope prepared apply slight down elevator avoid stall slopers tend ballon launch get familiar flight characteristics Mountaineer fly figure-eight pattern 100-feet out making turns away hill Let model drift toward slope crosses front prior turning wind next leg flying back toward down wind keep mind ground speed will sum normal flying speed plus wind normal tendency slow model apparent speed going wind normal speed less wind speed can produce unexpected stall hillside landings choice suggest landing low cross-slope pass nose model quartered wind feeding down eleva tor Dont forget hot coffee gets chilly out hill FF Indoor/Tenny continued page 38 actly correct Stand back visually spect wing alignment glue wing posts cabane Fig 8 shows wing should appear note stands just outside dihedral joints primary bracing wires can attached before moving anything Finally Fig 9 Fig 9 shows stands supporting tips dihedral joints glued dotted lines show secondary bracing used Have Stands Will Travel now apparent flat surface con98 Model Aviation 24 lIZ WINGSPAN 5 10% FOR PACKING AND POSTAGE VA RESIDENTS ADD 4% TAX