Rebuilding can quicker cheaper making new hull KNOW youre saying yourself heck repairing itbuild new stop Think about Its always lot lot cheaper rebuild its much quicker way get back air building new hate rebuilding would rather build three new aircraft ma jor surgery rebuilding two rea sons stated above ones keep throwing remains circular file starting anew particular patient Sailaire fuse lage section resultant damage oc curred practicing new landing tech niquethat dead receiver battery 150-ft altitude lucky Ive seen other unfortunates similar circum stances strain woodwork through top tree before mangling glass fuse ground Sailaire hit left side nose left wing tip Impact great actually fold right side fuselage under leading edge root section entire area outlined photo #1 soft cotton rag resin knocked out glass cloth remained some epoxy paint outside Photos #2-4 depict damage sustained other areas fuselage like myself after surveying damage ready order another fuselage Unfortunately nobody gives fi berglass fuselages away green stamps Thinking cash outlay least $30 new hull enough dampen spirits resurrecting patient Oh wait again Theres half quart resin piece glass cloth Ray Teliczan RepairThat 54 Model Aviation damage suffered sailplane repair described article Top Right side damagenote crack leading edge root resin 1/4 thickl Middle R Bottom seam split open towhook forward Above Both corners split open canopy opening Al open seam top Right Outlined area top fuselage loaded hairline cracks shelf besides can hardly make worse FAI says 11 pounds maximum leaves some 5-5 pounds play So what hey Lets try put some bandaids old bird get thermal bound again foregoing repair sequence might gospel some has worked worked very well indeed basic procedure also applicable power aircraft repairs although extra special tention must paid oil removal before resin laid Fold align broken sections original positions Tack 5-min ute epoxy necessary maintain align ment Sand damaged areas coarse sandpaper 80-100 grit inside out give new resin rough sur face stick Dont worry about out side Its going completely refinished anyhow Now take clean rag wipe down repair areas lacquer thinner acetone remove remain ing oil grease mold release agent Place masking tape over areas re paired outside prevent resin leaking out cracks tape eas ier peel off resin sand Use heavy glass cloth repair patches Twelve ounces per yard about right use DURO glass cloth DURO #FC-2 readily available auto parts stores chain discount stores Cut patches large enough overlap damaged area inch around Mix resin DURO #FR-3 cat alyst according manufacturers structions Apply coat resin side fuselage lay patch Make sure cloth laying flat against fuselage patch area compound curves cut cloth ra zor blade until does lay flat patch Continued page 101 August1978 55 Top Masking tape appiiea ouisiue repair areas prevent resin leaking Out Middle Fuselage repaired microballooned primed ready paintprime shows very white areas Above bad rebuild Only 35 oz added Pin wing root aligns trailing edge NB ENGINES Bavarian Precision Products Co Dept MA formerly Helmut Bernhardt Precision Movements Co PO Box 6 New Canaan Ct 06840203 966-8781 HB Engines have now well accepted modeling public availab ot n 1n creasing number too may now enjuy ng power boatiny dnd car racing HB Engines pre cision made power nirfnrmance re Foiery inn irIo5 ,odels Perry uireciiurial Porting in~rAaed power nri 1500 RPMs Sizes 12 15 20 25 40 50 61 displace HB precision maneuverability speed Baron complete catalog se ocal dealer write us directly parts available stock pt service assured Dealership inquiries invited elevators stabilizer Install wing tail surfaces fuselage install 1/32 balsa wing struts Adjusting fer Flight Use 6-in Peck Poly mers plastic prop Scrape blades re duce weight much possible balance make up prop /t dowel hub 1/32 balsa 1/64 plywood blades Soak form over 3-in can offset 150 left Bake oven 2000 30 minutes Slot hub /2 450 prop shaft end glue blades Install propeller 12-in loop 3/32 rubber Balance model level CG shown plans Add weight nose tail modeling clay until bal ances correctly Mine balanced additional weight Hand-wind about 200 turns hand launch check trim indoor flying modelers prefer right-hand circle power runs out circle will become smaller less likely hit walls indoor areas Out doors however prefer left-hand turn torque keeps nose up model much easier fly way gusty con ditions After have model trimmed wind winder sure use wind ing tube rubber breaks will tear up fuselage Always lube rubber motor find good idea make up couple motors wind broken until breaks install other airplane wind model about 100 less turns broken model proved good flier no trimming problems lot weight can saved eliminating half ribs using very lightweight indoor wood will increase flight performance because dont like ghost product review product review product review A4LJ-I KynawK injection moiuea foam kit intended Midwest RK-049 Axiflo ducted fan Cox Tee Dee gives 16 oz thrust 25% nitro fuel 20000 rpm Picture clearly shows complex ducting plane kit achieve thin wall section tail separate lightweight exhaust pipe locates ribs molded rear fuselage square hole two servos Midwest Pro ducts Co400 S Indiana StHobartIN 46342 product review product review product review planes like scale models look like real thing just skeleton shape sort resembles real plane Repair Fuselage/Teliczan continued page 55 allowed raise up fuselage strength repair will just fraction what would glass properly installed Now brush enough resin completely saturate cloth point finger can used assist flattening cloth After resin has cured closely inspect fuselage hairline cracks other weak soft areas easiest inspection method gently squeeze fuselage over repaired areas pops creaks chances im properly bonded area Over such area repeat cloth resin treatment Also over areas arent rigid sturdy original surface lay second layer cloth Dont forget resand gas-off areas resin cures wax-like coating top fresh resin wont bond After have satisfied yourself fuselage strong new fill ex ternal cracks chips other divots pasty mixture resin micro-balloons separations between layers glass cloth discovered work resin mix ture crevices trowel fash ioned popsicle stick August 1978 101 th Baron N Let micro-balloons cure sand down high spots 80 grit paper Resand 150 grit Make loose balloon mix ture work remaining cracks scratches Once cured sand first 150 grit 220 grit Norton Industries manufactures grade sandpaper superior wet dry types dry sanding Its called No-Fil Adalox Paper commonly referred white faced paper dry sanding best accomplished No-Fil type paper After sanding fuselage 220 grit go over 360 grit wet course fuselage contains wood would susceptible warping sanding dry Now prime can applied Sail aire finished K&B epoxy sys tem used four coats prime sanding 220 grit between coats whole aircraft wet sanded 400 grit Two light coats K&B epoxy red sprayed wasnt bad it did take lot less time money building new instance didnt add much weight eitherabout 35 ounces So what waiting Get out resin glass cloth get work FF Duration/Mouser continued page 41 plunk out fifty bucks simple considerably split-seconds variety useful timing both engine runs total flight times Cheapies half price arent worth half what cost went through three years ago would hang up just wrong time Some modern cheapies Ive seen great sec onds fifth-seconds little ambiguous about minutes Fifteen years ago asked house watchmaker what should buy showed guts half dozen dif ferent brands recommended Minerva showed Rugged After 15 years abuse including frequent drop ping concrete Minerva still ac curate better 1/5 sec hour has never serviced goes once around minute cant make half-minute mistake easily can trip 30 sec impossible inadvertently hit wrong button has digital stopwatches now second third generation cost about same conventional mechanical stopwatches bulkier having features dont need bit complicated operate ac curacy precision far exceed guy punching buttons have yet see has definitive click chanical watch virtually impossible misread display can read Mostall fact have seenemploy light-emitting diode LED display easy see dark impossible read broad daylight So-called chronographs combine reg ular wrist watch stopwatch Highquality mechanical ones likely extremely expensive inasmuch de mand low Mechanical electronic pushbuttons extremely small easily bumbled disadvantage weighed against convenience having stopwatch always few digital chron ographs market Most have LED displays have push button read time day having con tinuous liquid crystal display LCD harder find display con tinuously works reflected light consumes almost no electrical energy dim light auxiliary button lights up display Tritium LCD displays work product review product review product review RMs New Competition Free Flights Y3A Mav erick 260 sq wing area designed Tom Hutchinson winner US FF Champs features select balsa machine-cut parts de tailed plans complete building flying structions Price $1550 Zingoalsoa Hutchin son design simple FAI Power model also can flown AMA Classes B built full FAI-required weight Partial kit does include strip wood fuselage sides Does include machine-cut curved parts balsa ply Plans available Car stens Publications PO Box 700 Newton NJ 07860CF-271 $200 Price $1500 plans RM Enterprises 3255 NW Crocker Lane Albany OR 97321 product review product review product review well dark broad daylight far available chron ographs Some have seen give time nearest second useless competition Most digital chronographs have seen have both time out mode lap mode operation latter like split-seconds hand infinite number splits However saw possible display running time after first split works running would display time until punched button opted Armitron available Consumers Distributing CD around $50 isnt CD area dont complain friend got $41 jewelry store special have seen some obviously use same chip around $100 case better the Armitron might well worth extra money conventional mode displays time day sec onds day month day week has smart calendar knows whether 30 31 days month dont think has learned cope leap year Setting minor hassle sort fun once get hang has LCD display night light five know went sick after four months cured jig gling battery stopwatch mode operation reasonably idiot-proof de gree plain one-button mechanical stopwatch has both time-out lap functions latter mode running-time can displayed soon through reading first split during timing wish know time day day week day month can switch con ventional mode back stopwatch mode interrupting stopwatch function Useless sort cute Now Armitron has become part hard see could survive However Minerva sale Stoys Toy Re-Re-Visited Awhile back mentioned Stan Stoy would side lined competition year attending college after setting new Cat egory Indoor Hand-Launch Glider rec ord lied EditorDrawings Stoy Coot appeared April issue During lull college activities April Stan drove some 27 hours attend meet what must best Category site country high school gym Glastonbury Conn ceiling just 35 ft maximum allowed Cat flat beams lights duct work hanging down about 2 ft still leaves usable height 33 ft highest Stan has access Stan put up nine-flight series during mid-morning best two flights being 400 402 new record hitting ceiling lightened 102 Model Aviation OVEN 2801878 CATALOGS SCALE ORAS sloG MORR SON I 48500 M KENZ E HWYVIDA OR 97488
Edition: Model Aviation - 1978/08
Page Numbers: 54, 55, 101, 102
Rebuilding can quicker cheaper making new hull KNOW youre saying yourself heck repairing itbuild new stop Think about Its always lot lot cheaper rebuild its much quicker way get back air building new hate rebuilding would rather build three new aircraft ma jor surgery rebuilding two rea sons stated above ones keep throwing remains circular file starting anew particular patient Sailaire fuse lage section resultant damage oc curred practicing new landing tech niquethat dead receiver battery 150-ft altitude lucky Ive seen other unfortunates similar circum stances strain woodwork through top tree before mangling glass fuse ground Sailaire hit left side nose left wing tip Impact great actually fold right side fuselage under leading edge root section entire area outlined photo #1 soft cotton rag resin knocked out glass cloth remained some epoxy paint outside Photos #2-4 depict damage sustained other areas fuselage like myself after surveying damage ready order another fuselage Unfortunately nobody gives fi berglass fuselages away green stamps Thinking cash outlay least $30 new hull enough dampen spirits resurrecting patient Oh wait again Theres half quart resin piece glass cloth Ray Teliczan RepairThat 54 Model Aviation damage suffered sailplane repair described article Top Right side damagenote crack leading edge root resin 1/4 thickl Middle R Bottom seam split open towhook forward Above Both corners split open canopy opening Al open seam top Right Outlined area top fuselage loaded hairline cracks shelf besides can hardly make worse FAI says 11 pounds maximum leaves some 5-5 pounds play So what hey Lets try put some bandaids old bird get thermal bound again foregoing repair sequence might gospel some has worked worked very well indeed basic procedure also applicable power aircraft repairs although extra special tention must paid oil removal before resin laid Fold align broken sections original positions Tack 5-min ute epoxy necessary maintain align ment Sand damaged areas coarse sandpaper 80-100 grit inside out give new resin rough sur face stick Dont worry about out side Its going completely refinished anyhow Now take clean rag wipe down repair areas lacquer thinner acetone remove remain ing oil grease mold release agent Place masking tape over areas re paired outside prevent resin leaking out cracks tape eas ier peel off resin sand Use heavy glass cloth repair patches Twelve ounces per yard about right use DURO glass cloth DURO #FC-2 readily available auto parts stores chain discount stores Cut patches large enough overlap damaged area inch around Mix resin DURO #FR-3 cat alyst according manufacturers structions Apply coat resin side fuselage lay patch Make sure cloth laying flat against fuselage patch area compound curves cut cloth ra zor blade until does lay flat patch Continued page 101 August1978 55 Top Masking tape appiiea ouisiue repair areas prevent resin leaking Out Middle Fuselage repaired microballooned primed ready paintprime shows very white areas Above bad rebuild Only 35 oz added Pin wing root aligns trailing edge NB ENGINES Bavarian Precision Products Co Dept MA formerly Helmut Bernhardt Precision Movements Co PO Box 6 New Canaan Ct 06840203 966-8781 HB Engines have now well accepted modeling public availab ot n 1n creasing number too may now enjuy ng power boatiny dnd car racing HB Engines pre cision made power nirfnrmance re Foiery inn irIo5 ,odels Perry uireciiurial Porting in~rAaed power nri 1500 RPMs Sizes 12 15 20 25 40 50 61 displace HB precision maneuverability speed Baron complete catalog se ocal dealer write us directly parts available stock pt service assured Dealership inquiries invited elevators stabilizer Install wing tail surfaces fuselage install 1/32 balsa wing struts Adjusting fer Flight Use 6-in Peck Poly mers plastic prop Scrape blades re duce weight much possible balance make up prop /t dowel hub 1/32 balsa 1/64 plywood blades Soak form over 3-in can offset 150 left Bake oven 2000 30 minutes Slot hub /2 450 prop shaft end glue blades Install propeller 12-in loop 3/32 rubber Balance model level CG shown plans Add weight nose tail modeling clay until bal ances correctly Mine balanced additional weight Hand-wind about 200 turns hand launch check trim indoor flying modelers prefer right-hand circle power runs out circle will become smaller less likely hit walls indoor areas Out doors however prefer left-hand turn torque keeps nose up model much easier fly way gusty con ditions After have model trimmed wind winder sure use wind ing tube rubber breaks will tear up fuselage Always lube rubber motor find good idea make up couple motors wind broken until breaks install other airplane wind model about 100 less turns broken model proved good flier no trimming problems lot weight can saved eliminating half ribs using very lightweight indoor wood will increase flight performance because dont like ghost product review product review product review A4LJ-I KynawK injection moiuea foam kit intended Midwest RK-049 Axiflo ducted fan Cox Tee Dee gives 16 oz thrust 25% nitro fuel 20000 rpm Picture clearly shows complex ducting plane kit achieve thin wall section tail separate lightweight exhaust pipe locates ribs molded rear fuselage square hole two servos Midwest Pro ducts Co400 S Indiana StHobartIN 46342 product review product review product review planes like scale models look like real thing just skeleton shape sort resembles real plane Repair Fuselage/Teliczan continued page 55 allowed raise up fuselage strength repair will just fraction what would glass properly installed Now brush enough resin completely saturate cloth point finger can used assist flattening cloth After resin has cured closely inspect fuselage hairline cracks other weak soft areas easiest inspection method gently squeeze fuselage over repaired areas pops creaks chances im properly bonded area Over such area repeat cloth resin treatment Also over areas arent rigid sturdy original surface lay second layer cloth Dont forget resand gas-off areas resin cures wax-like coating top fresh resin wont bond After have satisfied yourself fuselage strong new fill ex ternal cracks chips other divots pasty mixture resin micro-balloons separations between layers glass cloth discovered work resin mix ture crevices trowel fash ioned popsicle stick August 1978 101 th Baron N Let micro-balloons cure sand down high spots 80 grit paper Resand 150 grit Make loose balloon mix ture work remaining cracks scratches Once cured sand first 150 grit 220 grit Norton Industries manufactures grade sandpaper superior wet dry types dry sanding Its called No-Fil Adalox Paper commonly referred white faced paper dry sanding best accomplished No-Fil type paper After sanding fuselage 220 grit go over 360 grit wet course fuselage contains wood would susceptible warping sanding dry Now prime can applied Sail aire finished K&B epoxy sys tem used four coats prime sanding 220 grit between coats whole aircraft wet sanded 400 grit Two light coats K&B epoxy red sprayed wasnt bad it did take lot less time money building new instance didnt add much weight eitherabout 35 ounces So what waiting Get out resin glass cloth get work FF Duration/Mouser continued page 41 plunk out fifty bucks simple considerably split-seconds variety useful timing both engine runs total flight times Cheapies half price arent worth half what cost went through three years ago would hang up just wrong time Some modern cheapies Ive seen great sec onds fifth-seconds little ambiguous about minutes Fifteen years ago asked house watchmaker what should buy showed guts half dozen dif ferent brands recommended Minerva showed Rugged After 15 years abuse including frequent drop ping concrete Minerva still ac curate better 1/5 sec hour has never serviced goes once around minute cant make half-minute mistake easily can trip 30 sec impossible inadvertently hit wrong button has digital stopwatches now second third generation cost about same conventional mechanical stopwatches bulkier having features dont need bit complicated operate ac curacy precision far exceed guy punching buttons have yet see has definitive click chanical watch virtually impossible misread display can read Mostall fact have seenemploy light-emitting diode LED display easy see dark impossible read broad daylight So-called chronographs combine reg ular wrist watch stopwatch Highquality mechanical ones likely extremely expensive inasmuch de mand low Mechanical electronic pushbuttons extremely small easily bumbled disadvantage weighed against convenience having stopwatch always few digital chron ographs market Most have LED displays have push button read time day having con tinuous liquid crystal display LCD harder find display con tinuously works reflected light consumes almost no electrical energy dim light auxiliary button lights up display Tritium LCD displays work product review product review product review RMs New Competition Free Flights Y3A Mav erick 260 sq wing area designed Tom Hutchinson winner US FF Champs features select balsa machine-cut parts de tailed plans complete building flying structions Price $1550 Zingoalsoa Hutchin son design simple FAI Power model also can flown AMA Classes B built full FAI-required weight Partial kit does include strip wood fuselage sides Does include machine-cut curved parts balsa ply Plans available Car stens Publications PO Box 700 Newton NJ 07860CF-271 $200 Price $1500 plans RM Enterprises 3255 NW Crocker Lane Albany OR 97321 product review product review product review well dark broad daylight far available chron ographs Some have seen give time nearest second useless competition Most digital chronographs have seen have both time out mode lap mode operation latter like split-seconds hand infinite number splits However saw possible display running time after first split works running would display time until punched button opted Armitron available Consumers Distributing CD around $50 isnt CD area dont complain friend got $41 jewelry store special have seen some obviously use same chip around $100 case better the Armitron might well worth extra money conventional mode displays time day sec onds day month day week has smart calendar knows whether 30 31 days month dont think has learned cope leap year Setting minor hassle sort fun once get hang has LCD display night light five know went sick after four months cured jig gling battery stopwatch mode operation reasonably idiot-proof de gree plain one-button mechanical stopwatch has both time-out lap functions latter mode running-time can displayed soon through reading first split during timing wish know time day day week day month can switch con ventional mode back stopwatch mode interrupting stopwatch function Useless sort cute Now Armitron has become part hard see could survive However Minerva sale Stoys Toy Re-Re-Visited Awhile back mentioned Stan Stoy would side lined competition year attending college after setting new Cat egory Indoor Hand-Launch Glider rec ord lied EditorDrawings Stoy Coot appeared April issue During lull college activities April Stan drove some 27 hours attend meet what must best Category site country high school gym Glastonbury Conn ceiling just 35 ft maximum allowed Cat flat beams lights duct work hanging down about 2 ft still leaves usable height 33 ft highest Stan has access Stan put up nine-flight series during mid-morning best two flights being 400 402 new record hitting ceiling lightened 102 Model Aviation OVEN 2801878 CATALOGS SCALE ORAS sloG MORR SON I 48500 M KENZ E HWYVIDA OR 97488
Edition: Model Aviation - 1978/08
Page Numbers: 54, 55, 101, 102
Rebuilding can quicker cheaper making new hull KNOW youre saying yourself heck repairing itbuild new stop Think about Its always lot lot cheaper rebuild its much quicker way get back air building new hate rebuilding would rather build three new aircraft ma jor surgery rebuilding two rea sons stated above ones keep throwing remains circular file starting anew particular patient Sailaire fuse lage section resultant damage oc curred practicing new landing tech niquethat dead receiver battery 150-ft altitude lucky Ive seen other unfortunates similar circum stances strain woodwork through top tree before mangling glass fuse ground Sailaire hit left side nose left wing tip Impact great actually fold right side fuselage under leading edge root section entire area outlined photo #1 soft cotton rag resin knocked out glass cloth remained some epoxy paint outside Photos #2-4 depict damage sustained other areas fuselage like myself after surveying damage ready order another fuselage Unfortunately nobody gives fi berglass fuselages away green stamps Thinking cash outlay least $30 new hull enough dampen spirits resurrecting patient Oh wait again Theres half quart resin piece glass cloth Ray Teliczan RepairThat 54 Model Aviation damage suffered sailplane repair described article Top Right side damagenote crack leading edge root resin 1/4 thickl Middle R Bottom seam split open towhook forward Above Both corners split open canopy opening Al open seam top Right Outlined area top fuselage loaded hairline cracks shelf besides can hardly make worse FAI says 11 pounds maximum leaves some 5-5 pounds play So what hey Lets try put some bandaids old bird get thermal bound again foregoing repair sequence might gospel some has worked worked very well indeed basic procedure also applicable power aircraft repairs although extra special tention must paid oil removal before resin laid Fold align broken sections original positions Tack 5-min ute epoxy necessary maintain align ment Sand damaged areas coarse sandpaper 80-100 grit inside out give new resin rough sur face stick Dont worry about out side Its going completely refinished anyhow Now take clean rag wipe down repair areas lacquer thinner acetone remove remain ing oil grease mold release agent Place masking tape over areas re paired outside prevent resin leaking out cracks tape eas ier peel off resin sand Use heavy glass cloth repair patches Twelve ounces per yard about right use DURO glass cloth DURO #FC-2 readily available auto parts stores chain discount stores Cut patches large enough overlap damaged area inch around Mix resin DURO #FR-3 cat alyst according manufacturers structions Apply coat resin side fuselage lay patch Make sure cloth laying flat against fuselage patch area compound curves cut cloth ra zor blade until does lay flat patch Continued page 101 August1978 55 Top Masking tape appiiea ouisiue repair areas prevent resin leaking Out Middle Fuselage repaired microballooned primed ready paintprime shows very white areas Above bad rebuild Only 35 oz added Pin wing root aligns trailing edge NB ENGINES Bavarian Precision Products Co Dept MA formerly Helmut Bernhardt Precision Movements Co PO Box 6 New Canaan Ct 06840203 966-8781 HB Engines have now well accepted modeling public availab ot n 1n creasing number too may now enjuy ng power boatiny dnd car racing HB Engines pre cision made power nirfnrmance re Foiery inn irIo5 ,odels Perry uireciiurial Porting in~rAaed power nri 1500 RPMs Sizes 12 15 20 25 40 50 61 displace HB precision maneuverability speed Baron complete catalog se ocal dealer write us directly parts available stock pt service assured Dealership inquiries invited elevators stabilizer Install wing tail surfaces fuselage install 1/32 balsa wing struts Adjusting fer Flight Use 6-in Peck Poly mers plastic prop Scrape blades re duce weight much possible balance make up prop /t dowel hub 1/32 balsa 1/64 plywood blades Soak form over 3-in can offset 150 left Bake oven 2000 30 minutes Slot hub /2 450 prop shaft end glue blades Install propeller 12-in loop 3/32 rubber Balance model level CG shown plans Add weight nose tail modeling clay until bal ances correctly Mine balanced additional weight Hand-wind about 200 turns hand launch check trim indoor flying modelers prefer right-hand circle power runs out circle will become smaller less likely hit walls indoor areas Out doors however prefer left-hand turn torque keeps nose up model much easier fly way gusty con ditions After have model trimmed wind winder sure use wind ing tube rubber breaks will tear up fuselage Always lube rubber motor find good idea make up couple motors wind broken until breaks install other airplane wind model about 100 less turns broken model proved good flier no trimming problems lot weight can saved eliminating half ribs using very lightweight indoor wood will increase flight performance because dont like ghost product review product review product review A4LJ-I KynawK injection moiuea foam kit intended Midwest RK-049 Axiflo ducted fan Cox Tee Dee gives 16 oz thrust 25% nitro fuel 20000 rpm Picture clearly shows complex ducting plane kit achieve thin wall section tail separate lightweight exhaust pipe locates ribs molded rear fuselage square hole two servos Midwest Pro ducts Co400 S Indiana StHobartIN 46342 product review product review product review planes like scale models look like real thing just skeleton shape sort resembles real plane Repair Fuselage/Teliczan continued page 55 allowed raise up fuselage strength repair will just fraction what would glass properly installed Now brush enough resin completely saturate cloth point finger can used assist flattening cloth After resin has cured closely inspect fuselage hairline cracks other weak soft areas easiest inspection method gently squeeze fuselage over repaired areas pops creaks chances im properly bonded area Over such area repeat cloth resin treatment Also over areas arent rigid sturdy original surface lay second layer cloth Dont forget resand gas-off areas resin cures wax-like coating top fresh resin wont bond After have satisfied yourself fuselage strong new fill ex ternal cracks chips other divots pasty mixture resin micro-balloons separations between layers glass cloth discovered work resin mix ture crevices trowel fash ioned popsicle stick August 1978 101 th Baron N Let micro-balloons cure sand down high spots 80 grit paper Resand 150 grit Make loose balloon mix ture work remaining cracks scratches Once cured sand first 150 grit 220 grit Norton Industries manufactures grade sandpaper superior wet dry types dry sanding Its called No-Fil Adalox Paper commonly referred white faced paper dry sanding best accomplished No-Fil type paper After sanding fuselage 220 grit go over 360 grit wet course fuselage contains wood would susceptible warping sanding dry Now prime can applied Sail aire finished K&B epoxy sys tem used four coats prime sanding 220 grit between coats whole aircraft wet sanded 400 grit Two light coats K&B epoxy red sprayed wasnt bad it did take lot less time money building new instance didnt add much weight eitherabout 35 ounces So what waiting Get out resin glass cloth get work FF Duration/Mouser continued page 41 plunk out fifty bucks simple considerably split-seconds variety useful timing both engine runs total flight times Cheapies half price arent worth half what cost went through three years ago would hang up just wrong time Some modern cheapies Ive seen great sec onds fifth-seconds little ambiguous about minutes Fifteen years ago asked house watchmaker what should buy showed guts half dozen dif ferent brands recommended Minerva showed Rugged After 15 years abuse including frequent drop ping concrete Minerva still ac curate better 1/5 sec hour has never serviced goes once around minute cant make half-minute mistake easily can trip 30 sec impossible inadvertently hit wrong button has digital stopwatches now second third generation cost about same conventional mechanical stopwatches bulkier having features dont need bit complicated operate ac curacy precision far exceed guy punching buttons have yet see has definitive click chanical watch virtually impossible misread display can read Mostall fact have seenemploy light-emitting diode LED display easy see dark impossible read broad daylight So-called chronographs combine reg ular wrist watch stopwatch Highquality mechanical ones likely extremely expensive inasmuch de mand low Mechanical electronic pushbuttons extremely small easily bumbled disadvantage weighed against convenience having stopwatch always few digital chron ographs market Most have LED displays have push button read time day having con tinuous liquid crystal display LCD harder find display con tinuously works reflected light consumes almost no electrical energy dim light auxiliary button lights up display Tritium LCD displays work product review product review product review RMs New Competition Free Flights Y3A Mav erick 260 sq wing area designed Tom Hutchinson winner US FF Champs features select balsa machine-cut parts de tailed plans complete building flying structions Price $1550 Zingoalsoa Hutchin son design simple FAI Power model also can flown AMA Classes B built full FAI-required weight Partial kit does include strip wood fuselage sides Does include machine-cut curved parts balsa ply Plans available Car stens Publications PO Box 700 Newton NJ 07860CF-271 $200 Price $1500 plans RM Enterprises 3255 NW Crocker Lane Albany OR 97321 product review product review product review well dark broad daylight far available chron ographs Some have seen give time nearest second useless competition Most digital chronographs have seen have both time out mode lap mode operation latter like split-seconds hand infinite number splits However saw possible display running time after first split works running would display time until punched button opted Armitron available Consumers Distributing CD around $50 isnt CD area dont complain friend got $41 jewelry store special have seen some obviously use same chip around $100 case better the Armitron might well worth extra money conventional mode displays time day sec onds day month day week has smart calendar knows whether 30 31 days month dont think has learned cope leap year Setting minor hassle sort fun once get hang has LCD display night light five know went sick after four months cured jig gling battery stopwatch mode operation reasonably idiot-proof de gree plain one-button mechanical stopwatch has both time-out lap functions latter mode running-time can displayed soon through reading first split during timing wish know time day day week day month can switch con ventional mode back stopwatch mode interrupting stopwatch function Useless sort cute Now Armitron has become part hard see could survive However Minerva sale Stoys Toy Re-Re-Visited Awhile back mentioned Stan Stoy would side lined competition year attending college after setting new Cat egory Indoor Hand-Launch Glider rec ord lied EditorDrawings Stoy Coot appeared April issue During lull college activities April Stan drove some 27 hours attend meet what must best Category site country high school gym Glastonbury Conn ceiling just 35 ft maximum allowed Cat flat beams lights duct work hanging down about 2 ft still leaves usable height 33 ft highest Stan has access Stan put up nine-flight series during mid-morning best two flights being 400 402 new record hitting ceiling lightened 102 Model Aviation OVEN 2801878 CATALOGS SCALE ORAS sloG MORR SON I 48500 M KENZ E HWYVIDA OR 97488
Edition: Model Aviation - 1978/08
Page Numbers: 54, 55, 101, 102
Rebuilding can quicker cheaper making new hull KNOW youre saying yourself heck repairing itbuild new stop Think about Its always lot lot cheaper rebuild its much quicker way get back air building new hate rebuilding would rather build three new aircraft ma jor surgery rebuilding two rea sons stated above ones keep throwing remains circular file starting anew particular patient Sailaire fuse lage section resultant damage oc curred practicing new landing tech niquethat dead receiver battery 150-ft altitude lucky Ive seen other unfortunates similar circum stances strain woodwork through top tree before mangling glass fuse ground Sailaire hit left side nose left wing tip Impact great actually fold right side fuselage under leading edge root section entire area outlined photo #1 soft cotton rag resin knocked out glass cloth remained some epoxy paint outside Photos #2-4 depict damage sustained other areas fuselage like myself after surveying damage ready order another fuselage Unfortunately nobody gives fi berglass fuselages away green stamps Thinking cash outlay least $30 new hull enough dampen spirits resurrecting patient Oh wait again Theres half quart resin piece glass cloth Ray Teliczan RepairThat 54 Model Aviation damage suffered sailplane repair described article Top Right side damagenote crack leading edge root resin 1/4 thickl Middle R Bottom seam split open towhook forward Above Both corners split open canopy opening Al open seam top Right Outlined area top fuselage loaded hairline cracks shelf besides can hardly make worse FAI says 11 pounds maximum leaves some 5-5 pounds play So what hey Lets try put some bandaids old bird get thermal bound again foregoing repair sequence might gospel some has worked worked very well indeed basic procedure also applicable power aircraft repairs although extra special tention must paid oil removal before resin laid Fold align broken sections original positions Tack 5-min ute epoxy necessary maintain align ment Sand damaged areas coarse sandpaper 80-100 grit inside out give new resin rough sur face stick Dont worry about out side Its going completely refinished anyhow Now take clean rag wipe down repair areas lacquer thinner acetone remove remain ing oil grease mold release agent Place masking tape over areas re paired outside prevent resin leaking out cracks tape eas ier peel off resin sand Use heavy glass cloth repair patches Twelve ounces per yard about right use DURO glass cloth DURO #FC-2 readily available auto parts stores chain discount stores Cut patches large enough overlap damaged area inch around Mix resin DURO #FR-3 cat alyst according manufacturers structions Apply coat resin side fuselage lay patch Make sure cloth laying flat against fuselage patch area compound curves cut cloth ra zor blade until does lay flat patch Continued page 101 August1978 55 Top Masking tape appiiea ouisiue repair areas prevent resin leaking Out Middle Fuselage repaired microballooned primed ready paintprime shows very white areas Above bad rebuild Only 35 oz added Pin wing root aligns trailing edge NB ENGINES Bavarian Precision Products Co Dept MA formerly Helmut Bernhardt Precision Movements Co PO Box 6 New Canaan Ct 06840203 966-8781 HB Engines have now well accepted modeling public availab ot n 1n creasing number too may now enjuy ng power boatiny dnd car racing HB Engines pre cision made power nirfnrmance re Foiery inn irIo5 ,odels Perry uireciiurial Porting in~rAaed power nri 1500 RPMs Sizes 12 15 20 25 40 50 61 displace HB precision maneuverability speed Baron complete catalog se ocal dealer write us directly parts available stock pt service assured Dealership inquiries invited elevators stabilizer Install wing tail surfaces fuselage install 1/32 balsa wing struts Adjusting fer Flight Use 6-in Peck Poly mers plastic prop Scrape blades re duce weight much possible balance make up prop /t dowel hub 1/32 balsa 1/64 plywood blades Soak form over 3-in can offset 150 left Bake oven 2000 30 minutes Slot hub /2 450 prop shaft end glue blades Install propeller 12-in loop 3/32 rubber Balance model level CG shown plans Add weight nose tail modeling clay until bal ances correctly Mine balanced additional weight Hand-wind about 200 turns hand launch check trim indoor flying modelers prefer right-hand circle power runs out circle will become smaller less likely hit walls indoor areas Out doors however prefer left-hand turn torque keeps nose up model much easier fly way gusty con ditions After have model trimmed wind winder sure use wind ing tube rubber breaks will tear up fuselage Always lube rubber motor find good idea make up couple motors wind broken until breaks install other airplane wind model about 100 less turns broken model proved good flier no trimming problems lot weight can saved eliminating half ribs using very lightweight indoor wood will increase flight performance because dont like ghost product review product review product review A4LJ-I KynawK injection moiuea foam kit intended Midwest RK-049 Axiflo ducted fan Cox Tee Dee gives 16 oz thrust 25% nitro fuel 20000 rpm Picture clearly shows complex ducting plane kit achieve thin wall section tail separate lightweight exhaust pipe locates ribs molded rear fuselage square hole two servos Midwest Pro ducts Co400 S Indiana StHobartIN 46342 product review product review product review planes like scale models look like real thing just skeleton shape sort resembles real plane Repair Fuselage/Teliczan continued page 55 allowed raise up fuselage strength repair will just fraction what would glass properly installed Now brush enough resin completely saturate cloth point finger can used assist flattening cloth After resin has cured closely inspect fuselage hairline cracks other weak soft areas easiest inspection method gently squeeze fuselage over repaired areas pops creaks chances im properly bonded area Over such area repeat cloth resin treatment Also over areas arent rigid sturdy original surface lay second layer cloth Dont forget resand gas-off areas resin cures wax-like coating top fresh resin wont bond After have satisfied yourself fuselage strong new fill ex ternal cracks chips other divots pasty mixture resin micro-balloons separations between layers glass cloth discovered work resin mix ture crevices trowel fash ioned popsicle stick August 1978 101 th Baron N Let micro-balloons cure sand down high spots 80 grit paper Resand 150 grit Make loose balloon mix ture work remaining cracks scratches Once cured sand first 150 grit 220 grit Norton Industries manufactures grade sandpaper superior wet dry types dry sanding Its called No-Fil Adalox Paper commonly referred white faced paper dry sanding best accomplished No-Fil type paper After sanding fuselage 220 grit go over 360 grit wet course fuselage contains wood would susceptible warping sanding dry Now prime can applied Sail aire finished K&B epoxy sys tem used four coats prime sanding 220 grit between coats whole aircraft wet sanded 400 grit Two light coats K&B epoxy red sprayed wasnt bad it did take lot less time money building new instance didnt add much weight eitherabout 35 ounces So what waiting Get out resin glass cloth get work FF Duration/Mouser continued page 41 plunk out fifty bucks simple considerably split-seconds variety useful timing both engine runs total flight times Cheapies half price arent worth half what cost went through three years ago would hang up just wrong time Some modern cheapies Ive seen great sec onds fifth-seconds little ambiguous about minutes Fifteen years ago asked house watchmaker what should buy showed guts half dozen dif ferent brands recommended Minerva showed Rugged After 15 years abuse including frequent drop ping concrete Minerva still ac curate better 1/5 sec hour has never serviced goes once around minute cant make half-minute mistake easily can trip 30 sec impossible inadvertently hit wrong button has digital stopwatches now second third generation cost about same conventional mechanical stopwatches bulkier having features dont need bit complicated operate ac curacy precision far exceed guy punching buttons have yet see has definitive click chanical watch virtually impossible misread display can read Mostall fact have seenemploy light-emitting diode LED display easy see dark impossible read broad daylight So-called chronographs combine reg ular wrist watch stopwatch Highquality mechanical ones likely extremely expensive inasmuch de mand low Mechanical electronic pushbuttons extremely small easily bumbled disadvantage weighed against convenience having stopwatch always few digital chron ographs market Most have LED displays have push button read time day having con tinuous liquid crystal display LCD harder find display con tinuously works reflected light consumes almost no electrical energy dim light auxiliary button lights up display Tritium LCD displays work product review product review product review RMs New Competition Free Flights Y3A Mav erick 260 sq wing area designed Tom Hutchinson winner US FF Champs features select balsa machine-cut parts de tailed plans complete building flying structions Price $1550 Zingoalsoa Hutchin son design simple FAI Power model also can flown AMA Classes B built full FAI-required weight Partial kit does include strip wood fuselage sides Does include machine-cut curved parts balsa ply Plans available Car stens Publications PO Box 700 Newton NJ 07860CF-271 $200 Price $1500 plans RM Enterprises 3255 NW Crocker Lane Albany OR 97321 product review product review product review well dark broad daylight far available chron ographs Some have seen give time nearest second useless competition Most digital chronographs have seen have both time out mode lap mode operation latter like split-seconds hand infinite number splits However saw possible display running time after first split works running would display time until punched button opted Armitron available Consumers Distributing CD around $50 isnt CD area dont complain friend got $41 jewelry store special have seen some obviously use same chip around $100 case better the Armitron might well worth extra money conventional mode displays time day sec onds day month day week has smart calendar knows whether 30 31 days month dont think has learned cope leap year Setting minor hassle sort fun once get hang has LCD display night light five know went sick after four months cured jig gling battery stopwatch mode operation reasonably idiot-proof de gree plain one-button mechanical stopwatch has both time-out lap functions latter mode running-time can displayed soon through reading first split during timing wish know time day day week day month can switch con ventional mode back stopwatch mode interrupting stopwatch function Useless sort cute Now Armitron has become part hard see could survive However Minerva sale Stoys Toy Re-Re-Visited Awhile back mentioned Stan Stoy would side lined competition year attending college after setting new Cat egory Indoor Hand-Launch Glider rec ord lied EditorDrawings Stoy Coot appeared April issue During lull college activities April Stan drove some 27 hours attend meet what must best Category site country high school gym Glastonbury Conn ceiling just 35 ft maximum allowed Cat flat beams lights duct work hanging down about 2 ft still leaves usable height 33 ft highest Stan has access Stan put up nine-flight series during mid-morning best two flights being 400 402 new record hitting ceiling lightened 102 Model Aviation OVEN 2801878 CATALOGS SCALE ORAS sloG MORR SON I 48500 M KENZ E HWYVIDA OR 97488