MODEL AERONAUTICS have under gone significant evolutionary changes through years Having reliable equipment new materials im proved construction techniques lot guts part some individuals depart convention negative atti tudes changes have produced easy build excellent performing model air craft eye appeal Seville new departure con vention proves contrary atti tudes low-wing rudder-and-elevator sailplane practical Seville practical highly stable has good lines full-size aircraft Its eye appeal dramatic making fly well landing approach touching down single wheel roll rest tail high So setting aside convention traditional attitudes mental strug gle began design low-wing hookhappy winch wanton-thermal ship wing airfoil configuration span area materials first consider ation moderately thin flat-bottom air foil chosen give good penetration fairly fast movement air over wing swept-back leading edge pro vides bit needed dihedral basically ten degrees sweepback gives 6 Model Aviation Proving low-wing rudder-and-elevator RC glider practical four ships have turned numerous soaring flights hour/Bill Evans U About catch Seville after soaring flight Bill Evans ship practical simple enjoyably stable wing foam cored ply balsa skin effect degree dihedral effect wing loading near 8 oz per sq ft root chord 9 tip chord 6 yielded 80-in span fully sheeted foam wing easy build gives needed strength winch launches can sheeted ply balsathe former requires no spar Though Seville thermal ship respect test flight couldnt quite bring myself high-start new lowwing rudder-and-elevator design So chose gentle slope located Simi Valley Seville pushed off four-knot wind flight performance remarkable did Seville maintain altitude managed beautiful climb 1200 feet plus turns piece cake requiring minimum down-elevator coming out turn Boyd Krueger shared watching Sevilles first flight expressed disappoint ment flew contrary belief low-wing rudder-and-elevator-only ships dont fly Boyd decided compare Sevilles performance against known model off air went Hobie surprise Seville kept pace Hobie Hobie maxed out about 1500 feet Seville didnt get quite high just 1200 feet After 20-minute slope test flight stretched out highstart flat field Seville tracked straight up high-start launch re sulted seven-minute flight cool 5 pm air time four Sevilles built have turned one-hour thermal flights Several under construction has built using 049 mounted nose power assist appearance standpoint modelers have seen view Seville something between Schweizer 232 U-2 although no specific aircraft mind designed considered fuselage avoid splicing materials sacrifice stability good combination nose tail moments worked out permit using 36-in stock fuse sides fairly large fuselage frontal area makes greater ease tracking through turns single wheel incorporated save wear tear fuselage place wheel behind CG way wheel position creates abso lutely no difficulty tow-line release tail surface sizes make possible cut necessary parts two pieces 3/16 X 4 X 36 also provides satisfactory area ratio tail surfaces wing about 25% convenience foam wing cores cut Seville available Bill Evans 19216 Calvert St Reseda CA 91335 Price $1000 includes ship ping CA residents add 6% tax Construction following instructions sequenced minimize building time Read over before building completely understand First should decide 1/16 balsa 1/64 plywood wing sheeting 1/16 balsa sheeting used /s X /2 spruce May1977 7 canopy installed Zap Zap filler nifty trim lines Exiting open fuselage end pushrod/horn attachment easily achieved using DJ Multi-stripeand look sharp obviously easy tinker Stab area about 26% wings Radio compartment provides snug adequate fit batteries View beneath showing mono-wheel gear tow hook access brick-type radio Strap-on wing quite satisfactory hatch wheel does interfere tow-line release wing spar shown pians must employed may cut spar groove foam cores using table saw saw blade raised e table top may use soldering gun properly bent wire tip depth gauge balsa strips guides Cement pin balsa strip leading edge wing panel making sure leading edge kept straight Cut fuselage sides top bottom formers stock Pin fuselage top flat surface Glue pin left fuselage side against fuselage top Glue pin /8 triangle stock against left fuselage side fuselage top repeat right side Glue pin fuse lage formers place Glue pin triangles bottom inside edges fuselage front rear Glue pin fuselage bottom /8 sheet front 3/16 rear Rough cut nose block pin glue fuselage Butt join splice 1/16 balsa sheet make four pieces 40 long taper 10 end 7 other 1/64 plywood may used wing sheeting mentioned Ap ply contact cement wing cores wing sheeting suggest using good water-base contact cement such Light-Dex Let cement dry per manufacturers instruc tions Bond sheeting wing cores sure use foam wing cradles base flat surface hold out panel As may know washout accom plished raising wing trailing edge wing tip case e normal position washout purpose washout prevent excessive tip stall falling off wing Washout works like aircraft makes turn lets say left turn right wing moves faster left wing faster moving right wing creates lift raises right wing above height left wing causing stall usually results ship falling off left washing out both wing tips up aileron effect produced works against increased lift results much smooth flat turn Trim sand wing panels add tip plates Join wing panels using 5-mm epoxy set dihedral blocking tip up45/s Cut out tail surfaces 3/16 sheet sand shape cut lightening holes can save wood buttgluing piece 3/16 4 X 3/16 sheet cut stab elevator piece Carve sand fuselage shape cut bottom hatch radio compart ment hatch made first making front rear cross-gain cuts Using razor saw make length cuts right angle through ngle Xacto knife ruler stright edge Cover components assemble Gray white Monokote DJs MultiStripe used original Epoxy tow hook wing shown plans Bend trim wheel strut shape screw epoxy strut wing install wheel Notice radio installed upside down make sure rudder elevator control movements cor rect Rudder throw should 1 in both directions /s up down eleva tor canopy permanently installed using Zap Zap filler trim black DJs Multi-Stripe Hying Fly Seville would thermal sailplane Ive found best launch method hold Seville hand wrapped around underneath sides fuselage forward wing Let launch line run forward hook between fuselage bottom hand Good lift 8 Model Aviation Rudder pushrod rudder horn detail Tail surfaces cut sheet balsa Authors model covered gray white Monokote rest distinctive tail-up attitude two Sevilles wait turn fly forward canopy position has found ease turns First test flight lasted 20 minutes Designer ready launch Seville Foam cores available Wing may skinned either balsa plywood according directions balsa used spar becomes necessary LEADING EDGE I/4I/2 PAl A. aOF Q000c~0oo 000 #OOOOOOoooooo -_______ cTh 000 11I/lB SHEET BALSA WING SKINS OVER FOAM CDREOPTION 1/640 0 0 0 0 0 0 0 0000 0 0 OMAKELIGHTENING 0 0 0 PLYCOVERPRODUCESA STRONGER0 0 ~2g TAIL 0 0 0 00 0 0 0 0 0 0 0 0 0 0 LOCATED HEREIF USING 36 INCH WOOD I/BI/2 SPRUCE SPAR NOT REQUIRED WHEN WING IS COVERED WITH PLYWOOD _______________________________ LEADING EDGEI/4d2 BALS~ BALSA NOSE BLOCK 7LANDING GEAR FLAT PATTERNMAKE ALUMINUM FFN O JI/B PLYWOOD 3/lB BALSA FIN ARUDDER 1- q0Q0 Lrt~-Em--_________ __________ I__________ __________________ ________10 0 _ IIIVINDICATES0 lh___ EDGEOF BALSA00oQo SIDES TOP & BOTTOMSIDES AND TOP. 000U 3/lB BALSAj000 0 INCH TRIANGLE STOCK0 0o0 OW THE NOSE BLOCK AS NEEDED TO ACCOMO DATE TO MAKE HATCH FIRST CONTOUR FUSELAGETHEN ZONA SAW SLOTS ACROSS FRONT AND REAR OF HATCH AS SHOWNCUT SIDESTOWHOOKBEND-UP3/IBI4BALSASCALE..WING AREA 620 SO IN -WING SPAN 800 INCHES FROMOGROD LIMBEDI INCH WHEELMAKE FROM SCRAPLENGTH 410 INCHES INTO FDOY CAVITY 1/4 DOWEL K WING ATTACHMENT Ivtw N~~A/cZI/B PLYWOOD FULL-SIZE PLANS AVAILABLESEE PAGE 104
Edition: Model Aviation - 1977/05
Page Numbers: 6, 7, 8, 9
Edition: Model Aviation - 1977/05
Page Numbers: 6, 7, 8, 9
MODEL AERONAUTICS have under gone significant evolutionary changes through years Having reliable equipment new materials im proved construction techniques lot guts part some individuals depart convention negative atti tudes changes have produced easy build excellent performing model air craft eye appeal Seville new departure con vention proves contrary atti tudes low-wing rudder-and-elevator sailplane practical Seville practical highly stable has good lines full-size aircraft Its eye appeal dramatic making fly well landing approach touching down single wheel roll rest tail high So setting aside convention traditional attitudes mental strug gle began design low-wing hookhappy winch wanton-thermal ship wing airfoil configuration span area materials first consider ation moderately thin flat-bottom air foil chosen give good penetration fairly fast movement air over wing swept-back leading edge pro vides bit needed dihedral basically ten degrees sweepback gives 6 Model Aviation Proving low-wing rudder-and-elevator RC glider practical four ships have turned numerous soaring flights hour/Bill Evans U About catch Seville after soaring flight Bill Evans ship practical simple enjoyably stable wing foam cored ply balsa skin effect degree dihedral effect wing loading near 8 oz per sq ft root chord 9 tip chord 6 yielded 80-in span fully sheeted foam wing easy build gives needed strength winch launches can sheeted ply balsathe former requires no spar Though Seville thermal ship respect test flight couldnt quite bring myself high-start new lowwing rudder-and-elevator design So chose gentle slope located Simi Valley Seville pushed off four-knot wind flight performance remarkable did Seville maintain altitude managed beautiful climb 1200 feet plus turns piece cake requiring minimum down-elevator coming out turn Boyd Krueger shared watching Sevilles first flight expressed disappoint ment flew contrary belief low-wing rudder-and-elevator-only ships dont fly Boyd decided compare Sevilles performance against known model off air went Hobie surprise Seville kept pace Hobie Hobie maxed out about 1500 feet Seville didnt get quite high just 1200 feet After 20-minute slope test flight stretched out highstart flat field Seville tracked straight up high-start launch re sulted seven-minute flight cool 5 pm air time four Sevilles built have turned one-hour thermal flights Several under construction has built using 049 mounted nose power assist appearance standpoint modelers have seen view Seville something between Schweizer 232 U-2 although no specific aircraft mind designed considered fuselage avoid splicing materials sacrifice stability good combination nose tail moments worked out permit using 36-in stock fuse sides fairly large fuselage frontal area makes greater ease tracking through turns single wheel incorporated save wear tear fuselage place wheel behind CG way wheel position creates abso lutely no difficulty tow-line release tail surface sizes make possible cut necessary parts two pieces 3/16 X 4 X 36 also provides satisfactory area ratio tail surfaces wing about 25% convenience foam wing cores cut Seville available Bill Evans 19216 Calvert St Reseda CA 91335 Price $1000 includes ship ping CA residents add 6% tax Construction following instructions sequenced minimize building time Read over before building completely understand First should decide 1/16 balsa 1/64 plywood wing sheeting 1/16 balsa sheeting used /s X /2 spruce May1977 7 canopy installed Zap Zap filler nifty trim lines Exiting open fuselage end pushrod/horn attachment easily achieved using DJ Multi-stripeand look sharp obviously easy tinker Stab area about 26% wings Radio compartment provides snug adequate fit batteries View beneath showing mono-wheel gear tow hook access brick-type radio Strap-on wing quite satisfactory hatch wheel does interfere tow-line release wing spar shown pians must employed may cut spar groove foam cores using table saw saw blade raised e table top may use soldering gun properly bent wire tip depth gauge balsa strips guides Cement pin balsa strip leading edge wing panel making sure leading edge kept straight Cut fuselage sides top bottom formers stock Pin fuselage top flat surface Glue pin left fuselage side against fuselage top Glue pin /8 triangle stock against left fuselage side fuselage top repeat right side Glue pin fuse lage formers place Glue pin triangles bottom inside edges fuselage front rear Glue pin fuselage bottom /8 sheet front 3/16 rear Rough cut nose block pin glue fuselage Butt join splice 1/16 balsa sheet make four pieces 40 long taper 10 end 7 other 1/64 plywood may used wing sheeting mentioned Ap ply contact cement wing cores wing sheeting suggest using good water-base contact cement such Light-Dex Let cement dry per manufacturers instruc tions Bond sheeting wing cores sure use foam wing cradles base flat surface hold out panel As may know washout accom plished raising wing trailing edge wing tip case e normal position washout purpose washout prevent excessive tip stall falling off wing Washout works like aircraft makes turn lets say left turn right wing moves faster left wing faster moving right wing creates lift raises right wing above height left wing causing stall usually results ship falling off left washing out both wing tips up aileron effect produced works against increased lift results much smooth flat turn Trim sand wing panels add tip plates Join wing panels using 5-mm epoxy set dihedral blocking tip up45/s Cut out tail surfaces 3/16 sheet sand shape cut lightening holes can save wood buttgluing piece 3/16 4 X 3/16 sheet cut stab elevator piece Carve sand fuselage shape cut bottom hatch radio compart ment hatch made first making front rear cross-gain cuts Using razor saw make length cuts right angle through ngle Xacto knife ruler stright edge Cover components assemble Gray white Monokote DJs MultiStripe used original Epoxy tow hook wing shown plans Bend trim wheel strut shape screw epoxy strut wing install wheel Notice radio installed upside down make sure rudder elevator control movements cor rect Rudder throw should 1 in both directions /s up down eleva tor canopy permanently installed using Zap Zap filler trim black DJs Multi-Stripe Hying Fly Seville would thermal sailplane Ive found best launch method hold Seville hand wrapped around underneath sides fuselage forward wing Let launch line run forward hook between fuselage bottom hand Good lift 8 Model Aviation Rudder pushrod rudder horn detail Tail surfaces cut sheet balsa Authors model covered gray white Monokote rest distinctive tail-up attitude two Sevilles wait turn fly forward canopy position has found ease turns First test flight lasted 20 minutes Designer ready launch Seville Foam cores available Wing may skinned either balsa plywood according directions balsa used spar becomes necessary LEADING EDGE I/4I/2 PAl A. aOF Q000c~0oo 000 #OOOOOOoooooo -_______ cTh 000 11I/lB SHEET BALSA WING SKINS OVER FOAM CDREOPTION 1/640 0 0 0 0 0 0 0 0000 0 0 OMAKELIGHTENING 0 0 0 PLYCOVERPRODUCESA STRONGER0 0 ~2g TAIL 0 0 0 00 0 0 0 0 0 0 0 0 0 0 LOCATED HEREIF USING 36 INCH WOOD I/BI/2 SPRUCE SPAR NOT REQUIRED WHEN WING IS COVERED WITH PLYWOOD _______________________________ LEADING EDGEI/4d2 BALS~ BALSA NOSE BLOCK 7LANDING GEAR FLAT PATTERNMAKE ALUMINUM FFN O JI/B PLYWOOD 3/lB BALSA FIN ARUDDER 1- q0Q0 Lrt~-Em--_________ __________ I__________ __________________ ________10 0 _ IIIVINDICATES0 lh___ EDGEOF BALSA00oQo SIDES TOP & BOTTOMSIDES AND TOP. 000U 3/lB BALSAj000 0 INCH TRIANGLE STOCK0 0o0 OW THE NOSE BLOCK AS NEEDED TO ACCOMO DATE TO MAKE HATCH FIRST CONTOUR FUSELAGETHEN ZONA SAW SLOTS ACROSS FRONT AND REAR OF HATCH AS SHOWNCUT SIDESTOWHOOKBEND-UP3/IBI4BALSASCALE..WING AREA 620 SO IN -WING SPAN 800 INCHES FROMOGROD LIMBEDI INCH WHEELMAKE FROM SCRAPLENGTH 410 INCHES INTO FDOY CAVITY 1/4 DOWEL K WING ATTACHMENT Ivtw N~~A/cZI/B PLYWOOD FULL-SIZE PLANS AVAILABLESEE PAGE 104
Edition: Model Aviation - 1977/05
Page Numbers: 6, 7, 8, 9
MODEL AERONAUTICS have under gone significant evolutionary changes through years Having reliable equipment new materials im proved construction techniques lot guts part some individuals depart convention negative atti tudes changes have produced easy build excellent performing model air craft eye appeal Seville new departure con vention proves contrary atti tudes low-wing rudder-and-elevator sailplane practical Seville practical highly stable has good lines full-size aircraft Its eye appeal dramatic making fly well landing approach touching down single wheel roll rest tail high So setting aside convention traditional attitudes mental strug gle began design low-wing hookhappy winch wanton-thermal ship wing airfoil configuration span area materials first consider ation moderately thin flat-bottom air foil chosen give good penetration fairly fast movement air over wing swept-back leading edge pro vides bit needed dihedral basically ten degrees sweepback gives 6 Model Aviation Proving low-wing rudder-and-elevator RC glider practical four ships have turned numerous soaring flights hour/Bill Evans U About catch Seville after soaring flight Bill Evans ship practical simple enjoyably stable wing foam cored ply balsa skin effect degree dihedral effect wing loading near 8 oz per sq ft root chord 9 tip chord 6 yielded 80-in span fully sheeted foam wing easy build gives needed strength winch launches can sheeted ply balsathe former requires no spar Though Seville thermal ship respect test flight couldnt quite bring myself high-start new lowwing rudder-and-elevator design So chose gentle slope located Simi Valley Seville pushed off four-knot wind flight performance remarkable did Seville maintain altitude managed beautiful climb 1200 feet plus turns piece cake requiring minimum down-elevator coming out turn Boyd Krueger shared watching Sevilles first flight expressed disappoint ment flew contrary belief low-wing rudder-and-elevator-only ships dont fly Boyd decided compare Sevilles performance against known model off air went Hobie surprise Seville kept pace Hobie Hobie maxed out about 1500 feet Seville didnt get quite high just 1200 feet After 20-minute slope test flight stretched out highstart flat field Seville tracked straight up high-start launch re sulted seven-minute flight cool 5 pm air time four Sevilles built have turned one-hour thermal flights Several under construction has built using 049 mounted nose power assist appearance standpoint modelers have seen view Seville something between Schweizer 232 U-2 although no specific aircraft mind designed considered fuselage avoid splicing materials sacrifice stability good combination nose tail moments worked out permit using 36-in stock fuse sides fairly large fuselage frontal area makes greater ease tracking through turns single wheel incorporated save wear tear fuselage place wheel behind CG way wheel position creates abso lutely no difficulty tow-line release tail surface sizes make possible cut necessary parts two pieces 3/16 X 4 X 36 also provides satisfactory area ratio tail surfaces wing about 25% convenience foam wing cores cut Seville available Bill Evans 19216 Calvert St Reseda CA 91335 Price $1000 includes ship ping CA residents add 6% tax Construction following instructions sequenced minimize building time Read over before building completely understand First should decide 1/16 balsa 1/64 plywood wing sheeting 1/16 balsa sheeting used /s X /2 spruce May1977 7 canopy installed Zap Zap filler nifty trim lines Exiting open fuselage end pushrod/horn attachment easily achieved using DJ Multi-stripeand look sharp obviously easy tinker Stab area about 26% wings Radio compartment provides snug adequate fit batteries View beneath showing mono-wheel gear tow hook access brick-type radio Strap-on wing quite satisfactory hatch wheel does interfere tow-line release wing spar shown pians must employed may cut spar groove foam cores using table saw saw blade raised e table top may use soldering gun properly bent wire tip depth gauge balsa strips guides Cement pin balsa strip leading edge wing panel making sure leading edge kept straight Cut fuselage sides top bottom formers stock Pin fuselage top flat surface Glue pin left fuselage side against fuselage top Glue pin /8 triangle stock against left fuselage side fuselage top repeat right side Glue pin fuse lage formers place Glue pin triangles bottom inside edges fuselage front rear Glue pin fuselage bottom /8 sheet front 3/16 rear Rough cut nose block pin glue fuselage Butt join splice 1/16 balsa sheet make four pieces 40 long taper 10 end 7 other 1/64 plywood may used wing sheeting mentioned Ap ply contact cement wing cores wing sheeting suggest using good water-base contact cement such Light-Dex Let cement dry per manufacturers instruc tions Bond sheeting wing cores sure use foam wing cradles base flat surface hold out panel As may know washout accom plished raising wing trailing edge wing tip case e normal position washout purpose washout prevent excessive tip stall falling off wing Washout works like aircraft makes turn lets say left turn right wing moves faster left wing faster moving right wing creates lift raises right wing above height left wing causing stall usually results ship falling off left washing out both wing tips up aileron effect produced works against increased lift results much smooth flat turn Trim sand wing panels add tip plates Join wing panels using 5-mm epoxy set dihedral blocking tip up45/s Cut out tail surfaces 3/16 sheet sand shape cut lightening holes can save wood buttgluing piece 3/16 4 X 3/16 sheet cut stab elevator piece Carve sand fuselage shape cut bottom hatch radio compart ment hatch made first making front rear cross-gain cuts Using razor saw make length cuts right angle through ngle Xacto knife ruler stright edge Cover components assemble Gray white Monokote DJs MultiStripe used original Epoxy tow hook wing shown plans Bend trim wheel strut shape screw epoxy strut wing install wheel Notice radio installed upside down make sure rudder elevator control movements cor rect Rudder throw should 1 in both directions /s up down eleva tor canopy permanently installed using Zap Zap filler trim black DJs Multi-Stripe Hying Fly Seville would thermal sailplane Ive found best launch method hold Seville hand wrapped around underneath sides fuselage forward wing Let launch line run forward hook between fuselage bottom hand Good lift 8 Model Aviation Rudder pushrod rudder horn detail Tail surfaces cut sheet balsa Authors model covered gray white Monokote rest distinctive tail-up attitude two Sevilles wait turn fly forward canopy position has found ease turns First test flight lasted 20 minutes Designer ready launch Seville Foam cores available Wing may skinned either balsa plywood according directions balsa used spar becomes necessary LEADING EDGE I/4I/2 PAl A. aOF Q000c~0oo 000 #OOOOOOoooooo -_______ cTh 000 11I/lB SHEET BALSA WING SKINS OVER FOAM CDREOPTION 1/640 0 0 0 0 0 0 0 0000 0 0 OMAKELIGHTENING 0 0 0 PLYCOVERPRODUCESA STRONGER0 0 ~2g TAIL 0 0 0 00 0 0 0 0 0 0 0 0 0 0 LOCATED HEREIF USING 36 INCH WOOD I/BI/2 SPRUCE SPAR NOT REQUIRED WHEN WING IS COVERED WITH PLYWOOD _______________________________ LEADING EDGEI/4d2 BALS~ BALSA NOSE BLOCK 7LANDING GEAR FLAT PATTERNMAKE ALUMINUM FFN O JI/B PLYWOOD 3/lB BALSA FIN ARUDDER 1- q0Q0 Lrt~-Em--_________ __________ I__________ __________________ ________10 0 _ IIIVINDICATES0 lh___ EDGEOF BALSA00oQo SIDES TOP & BOTTOMSIDES AND TOP. 000U 3/lB BALSAj000 0 INCH TRIANGLE STOCK0 0o0 OW THE NOSE BLOCK AS NEEDED TO ACCOMO DATE TO MAKE HATCH FIRST CONTOUR FUSELAGETHEN ZONA SAW SLOTS ACROSS FRONT AND REAR OF HATCH AS SHOWNCUT SIDESTOWHOOKBEND-UP3/IBI4BALSASCALE..WING AREA 620 SO IN -WING SPAN 800 INCHES FROMOGROD LIMBEDI INCH WHEELMAKE FROM SCRAPLENGTH 410 INCHES INTO FDOY CAVITY 1/4 DOWEL K WING ATTACHMENT Ivtw N~~A/cZI/B PLYWOOD FULL-SIZE PLANS AVAILABLESEE PAGE 104
Edition: Model Aviation - 1977/05
Page Numbers: 6, 7, 8, 9
MODEL AERONAUTICS have under gone significant evolutionary changes through years Having reliable equipment new materials im proved construction techniques lot guts part some individuals depart convention negative atti tudes changes have produced easy build excellent performing model air craft eye appeal Seville new departure con vention proves contrary atti tudes low-wing rudder-and-elevator sailplane practical Seville practical highly stable has good lines full-size aircraft Its eye appeal dramatic making fly well landing approach touching down single wheel roll rest tail high So setting aside convention traditional attitudes mental strug gle began design low-wing hookhappy winch wanton-thermal ship wing airfoil configuration span area materials first consider ation moderately thin flat-bottom air foil chosen give good penetration fairly fast movement air over wing swept-back leading edge pro vides bit needed dihedral basically ten degrees sweepback gives 6 Model Aviation Proving low-wing rudder-and-elevator RC glider practical four ships have turned numerous soaring flights hour/Bill Evans U About catch Seville after soaring flight Bill Evans ship practical simple enjoyably stable wing foam cored ply balsa skin effect degree dihedral effect wing loading near 8 oz per sq ft root chord 9 tip chord 6 yielded 80-in span fully sheeted foam wing easy build gives needed strength winch launches can sheeted ply balsathe former requires no spar Though Seville thermal ship respect test flight couldnt quite bring myself high-start new lowwing rudder-and-elevator design So chose gentle slope located Simi Valley Seville pushed off four-knot wind flight performance remarkable did Seville maintain altitude managed beautiful climb 1200 feet plus turns piece cake requiring minimum down-elevator coming out turn Boyd Krueger shared watching Sevilles first flight expressed disappoint ment flew contrary belief low-wing rudder-and-elevator-only ships dont fly Boyd decided compare Sevilles performance against known model off air went Hobie surprise Seville kept pace Hobie Hobie maxed out about 1500 feet Seville didnt get quite high just 1200 feet After 20-minute slope test flight stretched out highstart flat field Seville tracked straight up high-start launch re sulted seven-minute flight cool 5 pm air time four Sevilles built have turned one-hour thermal flights Several under construction has built using 049 mounted nose power assist appearance standpoint modelers have seen view Seville something between Schweizer 232 U-2 although no specific aircraft mind designed considered fuselage avoid splicing materials sacrifice stability good combination nose tail moments worked out permit using 36-in stock fuse sides fairly large fuselage frontal area makes greater ease tracking through turns single wheel incorporated save wear tear fuselage place wheel behind CG way wheel position creates abso lutely no difficulty tow-line release tail surface sizes make possible cut necessary parts two pieces 3/16 X 4 X 36 also provides satisfactory area ratio tail surfaces wing about 25% convenience foam wing cores cut Seville available Bill Evans 19216 Calvert St Reseda CA 91335 Price $1000 includes ship ping CA residents add 6% tax Construction following instructions sequenced minimize building time Read over before building completely understand First should decide 1/16 balsa 1/64 plywood wing sheeting 1/16 balsa sheeting used /s X /2 spruce May1977 7 canopy installed Zap Zap filler nifty trim lines Exiting open fuselage end pushrod/horn attachment easily achieved using DJ Multi-stripeand look sharp obviously easy tinker Stab area about 26% wings Radio compartment provides snug adequate fit batteries View beneath showing mono-wheel gear tow hook access brick-type radio Strap-on wing quite satisfactory hatch wheel does interfere tow-line release wing spar shown pians must employed may cut spar groove foam cores using table saw saw blade raised e table top may use soldering gun properly bent wire tip depth gauge balsa strips guides Cement pin balsa strip leading edge wing panel making sure leading edge kept straight Cut fuselage sides top bottom formers stock Pin fuselage top flat surface Glue pin left fuselage side against fuselage top Glue pin /8 triangle stock against left fuselage side fuselage top repeat right side Glue pin fuse lage formers place Glue pin triangles bottom inside edges fuselage front rear Glue pin fuselage bottom /8 sheet front 3/16 rear Rough cut nose block pin glue fuselage Butt join splice 1/16 balsa sheet make four pieces 40 long taper 10 end 7 other 1/64 plywood may used wing sheeting mentioned Ap ply contact cement wing cores wing sheeting suggest using good water-base contact cement such Light-Dex Let cement dry per manufacturers instruc tions Bond sheeting wing cores sure use foam wing cradles base flat surface hold out panel As may know washout accom plished raising wing trailing edge wing tip case e normal position washout purpose washout prevent excessive tip stall falling off wing Washout works like aircraft makes turn lets say left turn right wing moves faster left wing faster moving right wing creates lift raises right wing above height left wing causing stall usually results ship falling off left washing out both wing tips up aileron effect produced works against increased lift results much smooth flat turn Trim sand wing panels add tip plates Join wing panels using 5-mm epoxy set dihedral blocking tip up45/s Cut out tail surfaces 3/16 sheet sand shape cut lightening holes can save wood buttgluing piece 3/16 4 X 3/16 sheet cut stab elevator piece Carve sand fuselage shape cut bottom hatch radio compart ment hatch made first making front rear cross-gain cuts Using razor saw make length cuts right angle through ngle Xacto knife ruler stright edge Cover components assemble Gray white Monokote DJs MultiStripe used original Epoxy tow hook wing shown plans Bend trim wheel strut shape screw epoxy strut wing install wheel Notice radio installed upside down make sure rudder elevator control movements cor rect Rudder throw should 1 in both directions /s up down eleva tor canopy permanently installed using Zap Zap filler trim black DJs Multi-Stripe Hying Fly Seville would thermal sailplane Ive found best launch method hold Seville hand wrapped around underneath sides fuselage forward wing Let launch line run forward hook between fuselage bottom hand Good lift 8 Model Aviation Rudder pushrod rudder horn detail Tail surfaces cut sheet balsa Authors model covered gray white Monokote rest distinctive tail-up attitude two Sevilles wait turn fly forward canopy position has found ease turns First test flight lasted 20 minutes Designer ready launch Seville Foam cores available Wing may skinned either balsa plywood according directions balsa used spar becomes necessary LEADING EDGE I/4I/2 PAl A. aOF Q000c~0oo 000 #OOOOOOoooooo -_______ cTh 000 11I/lB SHEET BALSA WING SKINS OVER FOAM CDREOPTION 1/640 0 0 0 0 0 0 0 0000 0 0 OMAKELIGHTENING 0 0 0 PLYCOVERPRODUCESA STRONGER0 0 ~2g TAIL 0 0 0 00 0 0 0 0 0 0 0 0 0 0 LOCATED HEREIF USING 36 INCH WOOD I/BI/2 SPRUCE SPAR NOT REQUIRED WHEN WING IS COVERED WITH PLYWOOD _______________________________ LEADING EDGEI/4d2 BALS~ BALSA NOSE BLOCK 7LANDING GEAR FLAT PATTERNMAKE ALUMINUM FFN O JI/B PLYWOOD 3/lB BALSA FIN ARUDDER 1- q0Q0 Lrt~-Em--_________ __________ I__________ __________________ ________10 0 _ IIIVINDICATES0 lh___ EDGEOF BALSA00oQo SIDES TOP & BOTTOMSIDES AND TOP. 000U 3/lB BALSAj000 0 INCH TRIANGLE STOCK0 0o0 OW THE NOSE BLOCK AS NEEDED TO ACCOMO DATE TO MAKE HATCH FIRST CONTOUR FUSELAGETHEN ZONA SAW SLOTS ACROSS FRONT AND REAR OF HATCH AS SHOWNCUT SIDESTOWHOOKBEND-UP3/IBI4BALSASCALE..WING AREA 620 SO IN -WING SPAN 800 INCHES FROMOGROD LIMBEDI INCH WHEELMAKE FROM SCRAPLENGTH 410 INCHES INTO FDOY CAVITY 1/4 DOWEL K WING ATTACHMENT Ivtw N~~A/cZI/B PLYWOOD FULL-SIZE PLANS AVAILABLESEE PAGE 104
