emi hand-launched glider features reliable launch pattern good transition more-than-acceptable glide ONCE HAND-LAUNCH glider en thusiast gets hang Larry Conover would say flang chunking pieces balsa spruce air seeing stay longer two onehalf seconds maybe circle once twice before whumping ground isnt too long iii wants samefor longer period time Semi-Pro designed just such individual perhaps cut eye teeth basic HLG design now wants better bird good contest capa bilities revision original Pro glider featured 1959-61 Zaic Year book Semi-Pro has refined offer reliable launch pattern good tran sition more-than-acceptable glide Since glider flights basically twopart going up coming downthe Semi-Pro designed both well features cleaned-up nose area thin airfoil launch penetration going up pop-up tail D-T dethermalizer mode make sure can escape thermals appropriate time get back down Construction Semi-Pros fuselage straight-grained 1/8 spruce Cut out slightly over-size allow stressrelief tail-boom area sand down final shape sure align wing stabilizer platforms per plan order get proper angle good roll-out top launch slots nose weight snuffer tube can cut Moto-tool using razor saw Work carefully split wood area nose HLG takes beating thing else necessary preserve whatever original strength Epoxy fair lead nose-weight snuffer tube using Hobby Poxy 2 fiveminute epoxy Formula 4 can turn glassy age heat numerous fuses too subject shattering used around nose area Streamline fuse lage shape leaving wing platform flat sanding slight angle stab mount provide stabilizer tilt needed glide turn left See plan front view Shape wing blank carefully good 3/16 quarter-grain speckled ap pearance balsa glue basswood leading edge using Ambroid since sands better Titebond After leading edge dry carefully mark wing highpoint dihedral joints plane away excess wood high-point leading edge Now using successively finer grades sandpaper very little pressure give wing its final shape Pay particular attention wing tip areas make certain thin indicated plan help center wing mass over fuselage Tail surfaces cut balsa sizes called plan Cut oversize sand airfoil sand final shape avoid warps induced ex cessive pressure during sanding process stabilizer should doped five six coats Sig Lite Coat thinned least 50% preparation silk hinge need ed pop-up tail Allow coat dope dry thoroughly sand lightly before applying another coat very care ful during process avoid inducing warps Once final coat dope dry separate stab hinge-line butt two pieces back together Now lay silk hinge over break using thinner brush lightly saturate silk dope underneath softens sticks hinge brush Once hinge dry give stab coat very thin dope seal thing down finish rest ship up little need type finish builds up weight wing can given two three coats thinned sand ing sealer sanded between coats note dihedral breaks have yet cut three four coats thinned clear dope give glossy sheen want colored dope fuselage wing apply spar ingly enough enhance visibility Beautiful heavy HLGs rarely fly well Likewise rudder sub fin require 22 Model Aviation 7Z15E INSERT 015 WIRE SPRING ~ S71ICI IN FUSE D/T FUSE OErAIL SLOWS BU8W#IG 70 APFAOX E* -3 Alit PER IN No SCALE BASS OR SPRUCE S E 1/14 8-it LB BALSA 3/16 SHEET GTR GB / PRINTE*QS LEADi/G rncrAooxy IN $SOTIN FUSE NOTE DUiU i/OS ES AS ShO WA 70 SECIhE CLAY R QNE ADJUsrAvENrS 42 WiN6 9 WO WA FLAT NO DIHEDRAL ir BOTH TAOS TIP WASHOUT 21 OP-i/P SPPING 0i5OiANO WiRE ONE QEGO o seAeg 1/2 54AV 70 *V 4-65* BALSA QTR GB iii SILK HINGE TOP SURFACE OF STAB III i/Id Si/BET SAND S-It L& BALSA em 012 3456 InchesI ~fI J DWSIGNO l STAN CHILTON ___ LB dLSA t/i SHEET QTQ GR 1/8 SHEET DaUBS ER- B-It B BALSA GAAIN RE J AFT STAB TILT PARELLEL 70 WING FOR GLIDE TURN L 0 C 0 Ca SHEET SPRUCE , 1/16 SHEET SAND Wi/toDRAFTING MYLAR7 4706 LB5455Am ER31/60/A DISC GUIE7V GIJSSE7SEPOXIEDSTAB NYLON OR~IBEL5 2 SNdIF$ER flIBE 1/4 dD ALUM AL LIAl TUBE-EPOXY Yb FUS RELEASE ARM PivoT B RELEASE ARId -I/St PIANO WIREFL YiN WEIHr 80 7 / OZWIG/I PEFOMA NC A/AND LAUNCh GLIDER RUBBER BAND CtWAFT LOC OETRVIAES D/ YVAI/NG DIT rusE se DETAIL D*AWN ar JIM AAfIS two coats thinned Lite Coat Final assembly centers around wing D-T rigging Cut wing polyhedral joints carefully using razor saw sand wing tips center panel correct angles before epoxying thing back together epoxy cures cut center dihedral joint shape both resultant panels correct dihedral joint angles prior epoxying Mount wing fuselage epoxy notch out area finger rest too should attached epoxy since will bear brunt whatever force arm can muster wing/fuselage assembly dry pre-glue glue front stabi lizer its platform angle indicated proper glide turn high side stab inside glide circle rudder added next finally sub-fin elements glider alignment dry rig pop-up D-T indicated spring wire under ele vator must have enough angle pop stab tip about 450 cannot have much elevator cannot pulled flat against fuselage rubber band tension also release arm front fuselage must move freely its bear ing tube Take special care see epoxy kept out tube wire flops back forth freely its under tension Since youve put much time ef fort Semi-Pro get point yourself favor promise never fly thing lighting D-T fuse first good gliders flown both good bad flyers have long gone spurred aloft thoughts ink about Ever wonder planes have left fly doggy ones Flying Semi-Pro delight Wheth er arm weak strong ship rolls out nicely due relatively short tail moment generous dihedral Set CG about 50% launch plane about 600 vertical approximately 300 bank right should climb out top nose wind nicely need little left rudder get its glide path use sparingly bit time Over-ajustment can cause over-reactions part both flier plane Semi-Pro neat little easy-to-fly ship should provide easy transition basic glider types true contest potential Built well trim med carefully will pose true contest threat hands serious com petitor 24 Model Aviation comparing two pictures action dethermalizer mecha- through rubber string tail pulls pivoting wire below pop-up nism evident fuse fits nose openingwhen rubber band burns tail position good HL glider hooks thermals too Semi Pro Heres flipper up dethermalizer actuated position wire coil spring shows clearly does cord through hole body finger grip consists laminated piece glued wing fuselage Note again cross-section fuselage wsy nose
Edition: Model Aviation - 1976/01
Page Numbers: 22, 23, 24
emi hand-launched glider features reliable launch pattern good transition more-than-acceptable glide ONCE HAND-LAUNCH glider en thusiast gets hang Larry Conover would say flang chunking pieces balsa spruce air seeing stay longer two onehalf seconds maybe circle once twice before whumping ground isnt too long iii wants samefor longer period time Semi-Pro designed just such individual perhaps cut eye teeth basic HLG design now wants better bird good contest capa bilities revision original Pro glider featured 1959-61 Zaic Year book Semi-Pro has refined offer reliable launch pattern good tran sition more-than-acceptable glide Since glider flights basically twopart going up coming downthe Semi-Pro designed both well features cleaned-up nose area thin airfoil launch penetration going up pop-up tail D-T dethermalizer mode make sure can escape thermals appropriate time get back down Construction Semi-Pros fuselage straight-grained 1/8 spruce Cut out slightly over-size allow stressrelief tail-boom area sand down final shape sure align wing stabilizer platforms per plan order get proper angle good roll-out top launch slots nose weight snuffer tube can cut Moto-tool using razor saw Work carefully split wood area nose HLG takes beating thing else necessary preserve whatever original strength Epoxy fair lead nose-weight snuffer tube using Hobby Poxy 2 fiveminute epoxy Formula 4 can turn glassy age heat numerous fuses too subject shattering used around nose area Streamline fuse lage shape leaving wing platform flat sanding slight angle stab mount provide stabilizer tilt needed glide turn left See plan front view Shape wing blank carefully good 3/16 quarter-grain speckled ap pearance balsa glue basswood leading edge using Ambroid since sands better Titebond After leading edge dry carefully mark wing highpoint dihedral joints plane away excess wood high-point leading edge Now using successively finer grades sandpaper very little pressure give wing its final shape Pay particular attention wing tip areas make certain thin indicated plan help center wing mass over fuselage Tail surfaces cut balsa sizes called plan Cut oversize sand airfoil sand final shape avoid warps induced ex cessive pressure during sanding process stabilizer should doped five six coats Sig Lite Coat thinned least 50% preparation silk hinge need ed pop-up tail Allow coat dope dry thoroughly sand lightly before applying another coat very care ful during process avoid inducing warps Once final coat dope dry separate stab hinge-line butt two pieces back together Now lay silk hinge over break using thinner brush lightly saturate silk dope underneath softens sticks hinge brush Once hinge dry give stab coat very thin dope seal thing down finish rest ship up little need type finish builds up weight wing can given two three coats thinned sand ing sealer sanded between coats note dihedral breaks have yet cut three four coats thinned clear dope give glossy sheen want colored dope fuselage wing apply spar ingly enough enhance visibility Beautiful heavy HLGs rarely fly well Likewise rudder sub fin require 22 Model Aviation 7Z15E INSERT 015 WIRE SPRING ~ S71ICI IN FUSE D/T FUSE OErAIL SLOWS BU8W#IG 70 APFAOX E* -3 Alit PER IN No SCALE BASS OR SPRUCE S E 1/14 8-it LB BALSA 3/16 SHEET GTR GB / PRINTE*QS LEADi/G rncrAooxy IN $SOTIN FUSE NOTE DUiU i/OS ES AS ShO WA 70 SECIhE CLAY R QNE ADJUsrAvENrS 42 WiN6 9 WO WA FLAT NO DIHEDRAL ir BOTH TAOS TIP WASHOUT 21 OP-i/P SPPING 0i5OiANO WiRE ONE QEGO o seAeg 1/2 54AV 70 *V 4-65* BALSA QTR GB iii SILK HINGE TOP SURFACE OF STAB III i/Id Si/BET SAND S-It L& BALSA em 012 3456 InchesI ~fI J DWSIGNO l STAN CHILTON ___ LB dLSA t/i SHEET QTQ GR 1/8 SHEET DaUBS ER- B-It B BALSA GAAIN RE J AFT STAB TILT PARELLEL 70 WING FOR GLIDE TURN L 0 C 0 Ca SHEET SPRUCE , 1/16 SHEET SAND Wi/toDRAFTING MYLAR7 4706 LB5455Am ER31/60/A DISC GUIE7V GIJSSE7SEPOXIEDSTAB NYLON OR~IBEL5 2 SNdIF$ER flIBE 1/4 dD ALUM AL LIAl TUBE-EPOXY Yb FUS RELEASE ARM PivoT B RELEASE ARId -I/St PIANO WIREFL YiN WEIHr 80 7 / OZWIG/I PEFOMA NC A/AND LAUNCh GLIDER RUBBER BAND CtWAFT LOC OETRVIAES D/ YVAI/NG DIT rusE se DETAIL D*AWN ar JIM AAfIS two coats thinned Lite Coat Final assembly centers around wing D-T rigging Cut wing polyhedral joints carefully using razor saw sand wing tips center panel correct angles before epoxying thing back together epoxy cures cut center dihedral joint shape both resultant panels correct dihedral joint angles prior epoxying Mount wing fuselage epoxy notch out area finger rest too should attached epoxy since will bear brunt whatever force arm can muster wing/fuselage assembly dry pre-glue glue front stabi lizer its platform angle indicated proper glide turn high side stab inside glide circle rudder added next finally sub-fin elements glider alignment dry rig pop-up D-T indicated spring wire under ele vator must have enough angle pop stab tip about 450 cannot have much elevator cannot pulled flat against fuselage rubber band tension also release arm front fuselage must move freely its bear ing tube Take special care see epoxy kept out tube wire flops back forth freely its under tension Since youve put much time ef fort Semi-Pro get point yourself favor promise never fly thing lighting D-T fuse first good gliders flown both good bad flyers have long gone spurred aloft thoughts ink about Ever wonder planes have left fly doggy ones Flying Semi-Pro delight Wheth er arm weak strong ship rolls out nicely due relatively short tail moment generous dihedral Set CG about 50% launch plane about 600 vertical approximately 300 bank right should climb out top nose wind nicely need little left rudder get its glide path use sparingly bit time Over-ajustment can cause over-reactions part both flier plane Semi-Pro neat little easy-to-fly ship should provide easy transition basic glider types true contest potential Built well trim med carefully will pose true contest threat hands serious com petitor 24 Model Aviation comparing two pictures action dethermalizer mecha- through rubber string tail pulls pivoting wire below pop-up nism evident fuse fits nose openingwhen rubber band burns tail position good HL glider hooks thermals too Semi Pro Heres flipper up dethermalizer actuated position wire coil spring shows clearly does cord through hole body finger grip consists laminated piece glued wing fuselage Note again cross-section fuselage wsy nose
Edition: Model Aviation - 1976/01
Page Numbers: 22, 23, 24
emi hand-launched glider features reliable launch pattern good transition more-than-acceptable glide ONCE HAND-LAUNCH glider en thusiast gets hang Larry Conover would say flang chunking pieces balsa spruce air seeing stay longer two onehalf seconds maybe circle once twice before whumping ground isnt too long iii wants samefor longer period time Semi-Pro designed just such individual perhaps cut eye teeth basic HLG design now wants better bird good contest capa bilities revision original Pro glider featured 1959-61 Zaic Year book Semi-Pro has refined offer reliable launch pattern good tran sition more-than-acceptable glide Since glider flights basically twopart going up coming downthe Semi-Pro designed both well features cleaned-up nose area thin airfoil launch penetration going up pop-up tail D-T dethermalizer mode make sure can escape thermals appropriate time get back down Construction Semi-Pros fuselage straight-grained 1/8 spruce Cut out slightly over-size allow stressrelief tail-boom area sand down final shape sure align wing stabilizer platforms per plan order get proper angle good roll-out top launch slots nose weight snuffer tube can cut Moto-tool using razor saw Work carefully split wood area nose HLG takes beating thing else necessary preserve whatever original strength Epoxy fair lead nose-weight snuffer tube using Hobby Poxy 2 fiveminute epoxy Formula 4 can turn glassy age heat numerous fuses too subject shattering used around nose area Streamline fuse lage shape leaving wing platform flat sanding slight angle stab mount provide stabilizer tilt needed glide turn left See plan front view Shape wing blank carefully good 3/16 quarter-grain speckled ap pearance balsa glue basswood leading edge using Ambroid since sands better Titebond After leading edge dry carefully mark wing highpoint dihedral joints plane away excess wood high-point leading edge Now using successively finer grades sandpaper very little pressure give wing its final shape Pay particular attention wing tip areas make certain thin indicated plan help center wing mass over fuselage Tail surfaces cut balsa sizes called plan Cut oversize sand airfoil sand final shape avoid warps induced ex cessive pressure during sanding process stabilizer should doped five six coats Sig Lite Coat thinned least 50% preparation silk hinge need ed pop-up tail Allow coat dope dry thoroughly sand lightly before applying another coat very care ful during process avoid inducing warps Once final coat dope dry separate stab hinge-line butt two pieces back together Now lay silk hinge over break using thinner brush lightly saturate silk dope underneath softens sticks hinge brush Once hinge dry give stab coat very thin dope seal thing down finish rest ship up little need type finish builds up weight wing can given two three coats thinned sand ing sealer sanded between coats note dihedral breaks have yet cut three four coats thinned clear dope give glossy sheen want colored dope fuselage wing apply spar ingly enough enhance visibility Beautiful heavy HLGs rarely fly well Likewise rudder sub fin require 22 Model Aviation 7Z15E INSERT 015 WIRE SPRING ~ S71ICI IN FUSE D/T FUSE OErAIL SLOWS BU8W#IG 70 APFAOX E* -3 Alit PER IN No SCALE BASS OR SPRUCE S E 1/14 8-it LB BALSA 3/16 SHEET GTR GB / PRINTE*QS LEADi/G rncrAooxy IN $SOTIN FUSE NOTE DUiU i/OS ES AS ShO WA 70 SECIhE CLAY R QNE ADJUsrAvENrS 42 WiN6 9 WO WA FLAT NO DIHEDRAL ir BOTH TAOS TIP WASHOUT 21 OP-i/P SPPING 0i5OiANO WiRE ONE QEGO o seAeg 1/2 54AV 70 *V 4-65* BALSA QTR GB iii SILK HINGE TOP SURFACE OF STAB III i/Id Si/BET SAND S-It L& BALSA em 012 3456 InchesI ~fI J DWSIGNO l STAN CHILTON ___ LB dLSA t/i SHEET QTQ GR 1/8 SHEET DaUBS ER- B-It B BALSA GAAIN RE J AFT STAB TILT PARELLEL 70 WING FOR GLIDE TURN L 0 C 0 Ca SHEET SPRUCE , 1/16 SHEET SAND Wi/toDRAFTING MYLAR7 4706 LB5455Am ER31/60/A DISC GUIE7V GIJSSE7SEPOXIEDSTAB NYLON OR~IBEL5 2 SNdIF$ER flIBE 1/4 dD ALUM AL LIAl TUBE-EPOXY Yb FUS RELEASE ARM PivoT B RELEASE ARId -I/St PIANO WIREFL YiN WEIHr 80 7 / OZWIG/I PEFOMA NC A/AND LAUNCh GLIDER RUBBER BAND CtWAFT LOC OETRVIAES D/ YVAI/NG DIT rusE se DETAIL D*AWN ar JIM AAfIS two coats thinned Lite Coat Final assembly centers around wing D-T rigging Cut wing polyhedral joints carefully using razor saw sand wing tips center panel correct angles before epoxying thing back together epoxy cures cut center dihedral joint shape both resultant panels correct dihedral joint angles prior epoxying Mount wing fuselage epoxy notch out area finger rest too should attached epoxy since will bear brunt whatever force arm can muster wing/fuselage assembly dry pre-glue glue front stabi lizer its platform angle indicated proper glide turn high side stab inside glide circle rudder added next finally sub-fin elements glider alignment dry rig pop-up D-T indicated spring wire under ele vator must have enough angle pop stab tip about 450 cannot have much elevator cannot pulled flat against fuselage rubber band tension also release arm front fuselage must move freely its bear ing tube Take special care see epoxy kept out tube wire flops back forth freely its under tension Since youve put much time ef fort Semi-Pro get point yourself favor promise never fly thing lighting D-T fuse first good gliders flown both good bad flyers have long gone spurred aloft thoughts ink about Ever wonder planes have left fly doggy ones Flying Semi-Pro delight Wheth er arm weak strong ship rolls out nicely due relatively short tail moment generous dihedral Set CG about 50% launch plane about 600 vertical approximately 300 bank right should climb out top nose wind nicely need little left rudder get its glide path use sparingly bit time Over-ajustment can cause over-reactions part both flier plane Semi-Pro neat little easy-to-fly ship should provide easy transition basic glider types true contest potential Built well trim med carefully will pose true contest threat hands serious com petitor 24 Model Aviation comparing two pictures action dethermalizer mecha- through rubber string tail pulls pivoting wire below pop-up nism evident fuse fits nose openingwhen rubber band burns tail position good HL glider hooks thermals too Semi Pro Heres flipper up dethermalizer actuated position wire coil spring shows clearly does cord through hole body finger grip consists laminated piece glued wing fuselage Note again cross-section fuselage wsy nose