Many years ahead its time 1916 British Bristol Monoplane fighter makes distinctive good-flying project single-channel RC may wish modify controls Cannon RC system IMAGINE FULLY streamlined mono plane fighter maximum speed vicinity 130 mph designed available 1916 being put production some freakish design very practical well-engineered air craft built established manufacturer Exactly Bristol Monoplane didnt see service Western Front still mystery True still some prejudice against monoplanes time period resulting much earlier flying accidents several monoplanes did make combat zone suc cessful Bristol Monoplane however did not. token quantity made shipped Middle East saw some action general no real use made potent Ml excuses producing Bristol landing speed too high small Western Front aero dromes does seem ex cuse serious defect design Whatever real reasons fact remains aircraft did see action serious way remains mysteries Government thinking WW interested greater historical details list ref erences can found end article second Bristol Monoplane Ive built first being free-flight version powered aged diesel about fifty percent bigger model shown turned out excel lent flier also world traveller Con structed California first flown Sepulveda Basin taken Eng land longer trips back flown casually sum mer its flights lets make just flight type flew away dark next heard local Police Station after being picked off some irate citizens roof However thats another model another time lets get back current version Construction Construction can seen quite conventional following notes dis cuss some building details se quences Landing Gear building sequence prefer items made order required completion part isnt interrupted having stop work make another subsection first see what mean Anyhow system leads us start withguess whatthe undercarriage has installed about half way through fuselage construction its good idea get ready now main legs made single piece wire plans show true shape before final bends put Try make basic frame accurately possible after carefully bend down leg equally model will sit correctly its com pleted frame has bent sat isfactorily axle can cut tached lashed V leg fine copper wire soldered place wheels can either attached now after model has finished painted usually latter Left looking servos maybe Amidships double-ended Ace magnetic actuator batteries receiver drop forward compartment Note bearing provided torque rod bulkhead behind actuator Depending experience may wish substitute nylon wing-mount bolts dowels rubberbands Below The fuselage made old fash ioned method laying out both sides together over other After firewall cross piece forward TE place sides draw together stern post Landing gear installed stage photo spray painting tends cover everything everybody completed undercarriage can now put side get next item fuselage Fuselage begins selecting about half dozen good quality lengths /s sq basic fuselage box Now spread plans building board cover fuselage section sheet wax paper Pin down two Is-sq strips upper lower longerons cement /8-sq spacers place frame dry remove board make another exactly same latter fuselage side setting up /8-ply firewall cut out drilled engine mounting bolts both fuselage frames available should sanded very lightly joined gether -sq spacers firewall Putting side moment well prepare under-carriage unit installation Bind using carpei thread two strips /t X / wire smearing ce ment over combination hold U/C unit firmly place stall fuselage shown plan Select good flat sheet 1/16 balsa cut out tailplane fin Sand 42 Model Aviation Bristol Scout J W Headley Right Not bad looking planform ship designed 60 years ago machine gun pilot figure add considerable realism Roundels rudder stripes nostalgic Above What really unusual its day high degree streamlining Although monoplane keep popping up years pilots biplane fixation lasted 30s Open cockpits persisted early airliners Interesting scale up job Left The framework essentially simple un less figure stringers work Center section sheeted first rib sections side fuselage Cowling shaped balsa block short nose moment balance works Out very well March1977 43 Lx WIRE jZrz -I BLOCK BALSA COWL / oprOML\ SI______ PEE WEE 020 BLOCK BALSA 132SHSIDES FROM TO 3 K 2 SH FLOOR ALL BETWEEN I2 I\ 85L i6 SH WING RESTS- TO 4 rz 0 506 _____ 7 3 FRAMES 46SH ACTUATOR MOUNT SEW RUDDER TO FIN ______ FUSELAGE-8 SQ DOUBLER146SH PLAN OF C_________RUDDER WING DOWELS________-PLASTIC TUBE 50STRINGERS1/16 TORQUE WIRE6 SF1 TAILSKID ACTUATOR RECEIVER 14 0/A WHEELS NOIFMOST STRINGERS OMITTED FOR CLARITY N 0 S I-JIG PLY FULL-SIZE PLANS AVAILABLE E PAGE 96 BRISTOL MiB SCOUT DESIGNED AND DRAWN ~24 7w. S F/A BIND u/c TO 8SH CROSS PIECESi MACHINE GUN SCRAP BALSA StLL6L LID1BLJ c / H 0 fl 9 I 9K _H &6& 9 SUOGOIJiOBdS IeJeew UMO jnoA dogeAep o Aiesse -eu eq hIM uBisep SI4 o~j--- A3uej S egei oqM sues -d eip siSse o ueds OUIM \I U- S O PBZIS 5 ugid siia\4 items lightly over gent ly radius edges after can cemented basic fuselage Before glue dries make sure tailplane lined up correctly both top front view also fin mounted right angles tailplane Nows good time start putting some radio gear before fuselage gets too closed An Ace radio used prototype Baby Twin ac tuator now can fitted stage pet mounting schemes unit bolt place shown plans existing bolt holds actuator together replaced about half inch longer actually screws actuator place plane youve never tried sys tem want first thing epoxy U-shaped arms magnet holders together top bottom original center bolt removed whole thing doesnt collapse heap coils magnets actuator mount piece hard 1/s sheet cemented fuselage behind rear U/C crossmember has nut epoxied underneath attachment bolt make cement place now temporarily install actuator Bend up front end rudder torque wire make wire support frame noting has scrap ply attached wire bearing install both items rear end torque wire sup ported scrap plastic tubing epoxied lower longerons piece inner Nyrod good job Dont bend up rear torque wire yet until rudder has attached Cut rudder hard 1/16 sheet sand lightly drill series 1/16-dia holes along front edge corre sponding set along back edge fin Because wood grain direction fin added 1/32 sheet doubler along aft edge prevent sewing thread pulling through wood dont forget piece holes drilled sew rudder fin smear ce ment over thread except center cross over region coat ce ment holds thread place also takes some sloppiness out rud der movement shouldnt prevent rudder swinging freely final bend torque wire now can made also loop wire attaches rudder Take care doing final bending ensure actuator centralized Take actuator out fuselage now will become encrusted balsa dust other gook Lets get back fuselage construc tion Put 1/32 sheeting sides radio compartment 1/16 floor cut out little crescent-shaped frames attach Now 3/32 stringers As can see ce mented top rather being notched frames prefer sys tem couple reasons allows line up stringers better also dont have cut out little squares frames Cement stringers place attach 1/16 sheet wing rests few small items needed carved block balsa first engine cowling finished should look like inverted U next item small fairing block lower fuselage just behind under carriage legs last thing en gine spinner spinner starts making backplate piece 1/16 ply balsa fairing cemented top dont forget carve little tunnel block propeller prototype made spinner blunt end Legg stocking container epoxied ply backplate however balsa version just good Because size cowling its necessary modify engines needle valve slightly can twiddled outside Cut needle valve half just below knurled top solder length brass tubing between small hole has cut back cowl let needle protrude also let fuel tube stick out Thats about fuselage give everything light sanding well get wings plans show two views wing basic structure completely centersection final configura tion first cover basic wing plan wax paper well start Wing wing made piece flat building board cut cen ter rejoined dihedral braces So begin pinning trailing edge continued page 82 46 Model Aviation Right This rear-quarter view flying field suggests scale job model much different typical original design therefore flies just well Rudder hinging just Figure-8 stitch Bristol Scout Below The real ship might have looked like poised sands Middle East stationed cooling arrangement big spinner aircooled engine became new thing about 1940 No mistaking young lady feels about dads Bristol spinner used blunt end Leggs Container epoxied ply disk RC Soaring/Pruss continued page 24 Brochures two dollars Icarus hang glider detailed information can obtained Icarus Aircraft 37 S Euclid SuiteS Pasadena CA 91101 Cross Country Dick Beltz pumped informa tion cause hes modest comes informa tion latest club hold crosscountry race Lancaster PA Area Soaring Society LASS held event Milton Hershey School Hershey PA Sept 25 course nearly eight miles school grounds win ner Dick Beltz own design Pokey time 49 minutes Dick uti lized high-start five launches Other finishers Don Goughnour 1 hr 06 mm 7 launches Bob Curry 1 hr 13 mm 7 launches Jerry Zeigenfuse 2 hr 04 mm 9 launches interesting note Beltzs over pace just behind set Mrlik/ Tiahrt Greater Detroit Soaring Hiking Society last July during Great Bicentennial RC Sailplane Race Yet Beltz averaged little over mile half per launch Detroit team over 35/I distance/launch ratio Since Great Race much arm chair flying has done fliers competed also observed also some just read about should remembered San Fernando Valley Silent Flyers got race business started happened two years ago inauguration Desert Dash unheard goal 20 miles SFVSFs have recent ly run third other two set up run downwind Now planes compete races downwind direction flight necessarily cut out crosscountry flying closed course flown Example super floater has its best glide ratio 101 say 10 mph know arent going cross much country have fly 10 mph headwind ap parent clubs entered Great Race However some points discussed since last summer can passed whatever its worth de partment super floater bird racing consider opposite extreme Nelson KA-6 new scene soaring Nelson KA-6 fibreglass sailplaneall fibreglass wings tail included appeared scene about eight years ago Weight nearly 11 pounds wing loading over 24 ounces per square foot Stall ing speed about 15 mph L/D about 301 about 35 mph Simply put meant mile high KA-6 could fly 30 miles encountering other thermal Now could find thermal did still thermal 30 miles flier should able find another race course likes Great Race could flown approximately hour 30 minutes utilizing launch above figures merely hypothetical However prac ticability such plane such race must questioned First stall speed 15 mph large landing zones have carefully select ed damage incurred plane type repair required usually beyond Hot Stuff/Monokote requirements Launching requires brute strength 12-volt winch ROG Rise Off Ground imperative cross-country courses can pro vide latter requirements Furthermore because such high aspect ratio visibility such plane good other 12-foot sailplanes mile high would impractical altitude reach doesnt mean ther mals couldnt encountered often course flown lower altitudes however possibility frequent landings would also have considered seems racing per formance gap between KA-6 days popular kits crosscountry racing aspect competition Yet gap can closed todays kits designed around precision/duration tasks performance gap reversed con siders KA-6 type precision/duration spot landing Todays designs ballasted should perform very well cross-country work analyzes FAI scores last summer can seen happy compromise can exist between lazy afternoon floater high performing KA-6 type can surmise outcome race between floater fewer launches required ship much higher L/D possibly requiring twice tows say plane higher wing loading possibly higher L/D would need launch often would necessarily get better mileage time went up point consider trade-off anticipated would advantage ship flew faster required launches could get few times less overall time ground flew slower Something else came arm chair analysis team effort must winning What pit crew auto racing ground crew fli ers Whatever method launching crew coordination must perfected brought up point solution seems long overdue point standardize band signals within soaring regards winch operation relocating upwind pul leys extending line length shortening line length etc would valuable especially outside assistance re quired during contests relocating cause wind shifts example seems signals must effi cient crew coordination during crosscountry work So have al ready devised system workswith out use public address system send way perhaps form standardization can take place meantime talk club cross-country flying pass results way Dan Pruss Rt 2 Box 490 Plainfield IL 60544 Bristol Scout/Headley continued page 46 lower /8-sq spars down board cement place 1/32 sheet ribs upper /8-sq spar tricky item next bending /8-sq leading edge Before try ing add piece soak hot water make bending easier As alternate highly curved portion leading edge can cut 1/8 sheet glue dry cut wing center glue back together using dihedral braces Wl scrap sheet used reenforce trailing edge 82 Model Aviation 5% nitro -$650 gallon 10% nitro $725 gallon 15% nitro $800 gallon 54 gallon drum 15% Custom Blended Bill Hager$21954 HARRYS HOBBIESWESHIP FREE WITH 100 GALLON ORDER 5214 N Dixie Drive Dayton Ohio 45414OM Fuel Dayton Nationals CANT GET ANY LIGHTER SMALLER OR SIMPLER THAN pulse commander quality American made rudder-only pulse proportional radio system offers lightest weight smallest size flute pack available Only 21 oz total airborne weight Baby system Rudder-only flying perfect way start RIC also provides relaxing changeof-pace experienced flyer units come completely wired tested guaranteed ni-cd batteries charger furnished flute pack Transmitter battery included Eveready No 276 9V dry battery equivalent required systems $75 complete Available 72080 72160 72240 72320 72400 72960 75640 531 532 533 534 535 MHz Ham license required 53 MHz frequencies BABY 10G75 Airborne weight21 oz 595 g 010 Pee Wee 020 planes up 36 span STANDARD 10G76 Airborne weight31 oz 88 gI Babe Bee slow flying Tee Dee 049 planes up 42 span BABY TWIN 10G75T STOMPER 10G77 Airborne weight23 oz 652 g Airborne weight35 oz 992 g 020 slow flying 049 planes hot 049 slow flying 15 ships up 40 span NOTE 27 MHz systems still available Baby 10G15 $6995 Baby Twin 1OG15T $7295 Standard 10G16 $7195 Stomper lOG 17 $7495 Please sand complete atalog Enclosed Si 00 refunded NAME first order Add SiC lot class mail return add $100 handling other ADDRESS joint Add 1/16 sheet ribs 1/32 sheeting top centersec tion completes basic wing con struction fuselage complete put wing place make fit pieces W2 W3 Finish off wing gluing place 1/32 sheeting over items Covering All open framework cov ered medium-weight tissue given couple coats clear dope tail surfaces covered just given sealing coat clear dope after final light sanding can made complete model sprayed final color coating Additional trim compromise tween scale accuracy flight perform ance Including correct bracing wires etc makes attractive looking model certainly increases drag hence reduces flyability So now time decide much detail put original model included cabane structure bracing wires top wing using black thread other details apart roundels drawn place India ink Color Schemes inclina tions towards flying finish ing perfectly authentic color scheme available real prototypes finished clear dope markings usual roundels black serial number fin A5319 ing typical must admit tempt ed use somehow doesnt seem right have World War aircraft wasnt painted green chose pro duction aircraft finish standard khaki-green black serials fin C4950 typical problem found scheme gave almost perfect camouflage local flying field making model diffi cult spot impossible photograph set photos taken turned out totally useless couldnt tell model stopped grass began Installation Weve already covered stallation actuator torque wire has installed remains put battery receiver fit compartment just ahead actuator small 1/16 sheet frame re quired isolate items actuator radio pieces have installed check torque wire still free oscillate rudder hinges havent frozen up im portant rudder moves correct direction commanded Flying Now interesting bit off flying field attitude toward singlechannel work its actually free fighting running around well its opinion ie model needs trimmed flying its own radio stop flying away So have rudder control pitch stability has built model first thing field varying wing incidence CG location slightly make sure flight path isnt just series stalls usually followed heart rendering sound compacting balsa Once youve got sorted out other adjust ment set rudder throw dont make either too sensitive too insensitive point its up good luck friend always says enjoy References Theres awful lot written about Bristol books used follow British Aeroplanes 1914-1918 J M Bruce Bristol Aircraft Since 1910 C H Barnes Warplanes First World War Fighters Vol 1 J M Bruce youre interested detailed model particular plane good selection photographs can found books show minor variations between types window cut-out etc Color details can found Aircraft Camouflage Markings 1907-1954 Bruce Robertson source used decorating prototype March 1977 83 AU I/ Em]
Edition: Model Aviation - 1977/03
Page Numbers: 42, 43, 44, 45, 46, 82, 83
Many years ahead its time 1916 British Bristol Monoplane fighter makes distinctive good-flying project single-channel RC may wish modify controls Cannon RC system IMAGINE FULLY streamlined mono plane fighter maximum speed vicinity 130 mph designed available 1916 being put production some freakish design very practical well-engineered air craft built established manufacturer Exactly Bristol Monoplane didnt see service Western Front still mystery True still some prejudice against monoplanes time period resulting much earlier flying accidents several monoplanes did make combat zone suc cessful Bristol Monoplane however did not. token quantity made shipped Middle East saw some action general no real use made potent Ml excuses producing Bristol landing speed too high small Western Front aero dromes does seem ex cuse serious defect design Whatever real reasons fact remains aircraft did see action serious way remains mysteries Government thinking WW interested greater historical details list ref erences can found end article second Bristol Monoplane Ive built first being free-flight version powered aged diesel about fifty percent bigger model shown turned out excel lent flier also world traveller Con structed California first flown Sepulveda Basin taken Eng land longer trips back flown casually sum mer its flights lets make just flight type flew away dark next heard local Police Station after being picked off some irate citizens roof However thats another model another time lets get back current version Construction Construction can seen quite conventional following notes dis cuss some building details se quences Landing Gear building sequence prefer items made order required completion part isnt interrupted having stop work make another subsection first see what mean Anyhow system leads us start withguess whatthe undercarriage has installed about half way through fuselage construction its good idea get ready now main legs made single piece wire plans show true shape before final bends put Try make basic frame accurately possible after carefully bend down leg equally model will sit correctly its com pleted frame has bent sat isfactorily axle can cut tached lashed V leg fine copper wire soldered place wheels can either attached now after model has finished painted usually latter Left looking servos maybe Amidships double-ended Ace magnetic actuator batteries receiver drop forward compartment Note bearing provided torque rod bulkhead behind actuator Depending experience may wish substitute nylon wing-mount bolts dowels rubberbands Below The fuselage made old fash ioned method laying out both sides together over other After firewall cross piece forward TE place sides draw together stern post Landing gear installed stage photo spray painting tends cover everything everybody completed undercarriage can now put side get next item fuselage Fuselage begins selecting about half dozen good quality lengths /s sq basic fuselage box Now spread plans building board cover fuselage section sheet wax paper Pin down two Is-sq strips upper lower longerons cement /8-sq spacers place frame dry remove board make another exactly same latter fuselage side setting up /8-ply firewall cut out drilled engine mounting bolts both fuselage frames available should sanded very lightly joined gether -sq spacers firewall Putting side moment well prepare under-carriage unit installation Bind using carpei thread two strips /t X / wire smearing ce ment over combination hold U/C unit firmly place stall fuselage shown plan Select good flat sheet 1/16 balsa cut out tailplane fin Sand 42 Model Aviation Bristol Scout J W Headley Right Not bad looking planform ship designed 60 years ago machine gun pilot figure add considerable realism Roundels rudder stripes nostalgic Above What really unusual its day high degree streamlining Although monoplane keep popping up years pilots biplane fixation lasted 30s Open cockpits persisted early airliners Interesting scale up job Left The framework essentially simple un less figure stringers work Center section sheeted first rib sections side fuselage Cowling shaped balsa block short nose moment balance works Out very well March1977 43 Lx WIRE jZrz -I BLOCK BALSA COWL / oprOML\ SI______ PEE WEE 020 BLOCK BALSA 132SHSIDES FROM TO 3 K 2 SH FLOOR ALL BETWEEN I2 I\ 85L i6 SH WING RESTS- TO 4 rz 0 506 _____ 7 3 FRAMES 46SH ACTUATOR MOUNT SEW RUDDER TO FIN ______ FUSELAGE-8 SQ DOUBLER146SH PLAN OF C_________RUDDER WING DOWELS________-PLASTIC TUBE 50STRINGERS1/16 TORQUE WIRE6 SF1 TAILSKID ACTUATOR RECEIVER 14 0/A WHEELS NOIFMOST STRINGERS OMITTED FOR CLARITY N 0 S I-JIG PLY FULL-SIZE PLANS AVAILABLE E PAGE 96 BRISTOL MiB SCOUT DESIGNED AND DRAWN ~24 7w. S F/A BIND u/c TO 8SH CROSS PIECESi MACHINE GUN SCRAP BALSA StLL6L LID1BLJ c / H 0 fl 9 I 9K _H &6& 9 SUOGOIJiOBdS IeJeew UMO jnoA dogeAep o Aiesse -eu eq hIM uBisep SI4 o~j--- A3uej S egei oqM sues -d eip siSse o ueds OUIM \I U- S O PBZIS 5 ugid siia\4 items lightly over gent ly radius edges after can cemented basic fuselage Before glue dries make sure tailplane lined up correctly both top front view also fin mounted right angles tailplane Nows good time start putting some radio gear before fuselage gets too closed An Ace radio used prototype Baby Twin ac tuator now can fitted stage pet mounting schemes unit bolt place shown plans existing bolt holds actuator together replaced about half inch longer actually screws actuator place plane youve never tried sys tem want first thing epoxy U-shaped arms magnet holders together top bottom original center bolt removed whole thing doesnt collapse heap coils magnets actuator mount piece hard 1/s sheet cemented fuselage behind rear U/C crossmember has nut epoxied underneath attachment bolt make cement place now temporarily install actuator Bend up front end rudder torque wire make wire support frame noting has scrap ply attached wire bearing install both items rear end torque wire sup ported scrap plastic tubing epoxied lower longerons piece inner Nyrod good job Dont bend up rear torque wire yet until rudder has attached Cut rudder hard 1/16 sheet sand lightly drill series 1/16-dia holes along front edge corre sponding set along back edge fin Because wood grain direction fin added 1/32 sheet doubler along aft edge prevent sewing thread pulling through wood dont forget piece holes drilled sew rudder fin smear ce ment over thread except center cross over region coat ce ment holds thread place also takes some sloppiness out rud der movement shouldnt prevent rudder swinging freely final bend torque wire now can made also loop wire attaches rudder Take care doing final bending ensure actuator centralized Take actuator out fuselage now will become encrusted balsa dust other gook Lets get back fuselage construc tion Put 1/32 sheeting sides radio compartment 1/16 floor cut out little crescent-shaped frames attach Now 3/32 stringers As can see ce mented top rather being notched frames prefer sys tem couple reasons allows line up stringers better also dont have cut out little squares frames Cement stringers place attach 1/16 sheet wing rests few small items needed carved block balsa first engine cowling finished should look like inverted U next item small fairing block lower fuselage just behind under carriage legs last thing en gine spinner spinner starts making backplate piece 1/16 ply balsa fairing cemented top dont forget carve little tunnel block propeller prototype made spinner blunt end Legg stocking container epoxied ply backplate however balsa version just good Because size cowling its necessary modify engines needle valve slightly can twiddled outside Cut needle valve half just below knurled top solder length brass tubing between small hole has cut back cowl let needle protrude also let fuel tube stick out Thats about fuselage give everything light sanding well get wings plans show two views wing basic structure completely centersection final configura tion first cover basic wing plan wax paper well start Wing wing made piece flat building board cut cen ter rejoined dihedral braces So begin pinning trailing edge continued page 82 46 Model Aviation Right This rear-quarter view flying field suggests scale job model much different typical original design therefore flies just well Rudder hinging just Figure-8 stitch Bristol Scout Below The real ship might have looked like poised sands Middle East stationed cooling arrangement big spinner aircooled engine became new thing about 1940 No mistaking young lady feels about dads Bristol spinner used blunt end Leggs Container epoxied ply disk RC Soaring/Pruss continued page 24 Brochures two dollars Icarus hang glider detailed information can obtained Icarus Aircraft 37 S Euclid SuiteS Pasadena CA 91101 Cross Country Dick Beltz pumped informa tion cause hes modest comes informa tion latest club hold crosscountry race Lancaster PA Area Soaring Society LASS held event Milton Hershey School Hershey PA Sept 25 course nearly eight miles school grounds win ner Dick Beltz own design Pokey time 49 minutes Dick uti lized high-start five launches Other finishers Don Goughnour 1 hr 06 mm 7 launches Bob Curry 1 hr 13 mm 7 launches Jerry Zeigenfuse 2 hr 04 mm 9 launches interesting note Beltzs over pace just behind set Mrlik/ Tiahrt Greater Detroit Soaring Hiking Society last July during Great Bicentennial RC Sailplane Race Yet Beltz averaged little over mile half per launch Detroit team over 35/I distance/launch ratio Since Great Race much arm chair flying has done fliers competed also observed also some just read about should remembered San Fernando Valley Silent Flyers got race business started happened two years ago inauguration Desert Dash unheard goal 20 miles SFVSFs have recent ly run third other two set up run downwind Now planes compete races downwind direction flight necessarily cut out crosscountry flying closed course flown Example super floater has its best glide ratio 101 say 10 mph know arent going cross much country have fly 10 mph headwind ap parent clubs entered Great Race However some points discussed since last summer can passed whatever its worth de partment super floater bird racing consider opposite extreme Nelson KA-6 new scene soaring Nelson KA-6 fibreglass sailplaneall fibreglass wings tail included appeared scene about eight years ago Weight nearly 11 pounds wing loading over 24 ounces per square foot Stall ing speed about 15 mph L/D about 301 about 35 mph Simply put meant mile high KA-6 could fly 30 miles encountering other thermal Now could find thermal did still thermal 30 miles flier should able find another race course likes Great Race could flown approximately hour 30 minutes utilizing launch above figures merely hypothetical However prac ticability such plane such race must questioned First stall speed 15 mph large landing zones have carefully select ed damage incurred plane type repair required usually beyond Hot Stuff/Monokote requirements Launching requires brute strength 12-volt winch ROG Rise Off Ground imperative cross-country courses can pro vide latter requirements Furthermore because such high aspect ratio visibility such plane good other 12-foot sailplanes mile high would impractical altitude reach doesnt mean ther mals couldnt encountered often course flown lower altitudes however possibility frequent landings would also have considered seems racing per formance gap between KA-6 days popular kits crosscountry racing aspect competition Yet gap can closed todays kits designed around precision/duration tasks performance gap reversed con siders KA-6 type precision/duration spot landing Todays designs ballasted should perform very well cross-country work analyzes FAI scores last summer can seen happy compromise can exist between lazy afternoon floater high performing KA-6 type can surmise outcome race between floater fewer launches required ship much higher L/D possibly requiring twice tows say plane higher wing loading possibly higher L/D would need launch often would necessarily get better mileage time went up point consider trade-off anticipated would advantage ship flew faster required launches could get few times less overall time ground flew slower Something else came arm chair analysis team effort must winning What pit crew auto racing ground crew fli ers Whatever method launching crew coordination must perfected brought up point solution seems long overdue point standardize band signals within soaring regards winch operation relocating upwind pul leys extending line length shortening line length etc would valuable especially outside assistance re quired during contests relocating cause wind shifts example seems signals must effi cient crew coordination during crosscountry work So have al ready devised system workswith out use public address system send way perhaps form standardization can take place meantime talk club cross-country flying pass results way Dan Pruss Rt 2 Box 490 Plainfield IL 60544 Bristol Scout/Headley continued page 46 lower /8-sq spars down board cement place 1/32 sheet ribs upper /8-sq spar tricky item next bending /8-sq leading edge Before try ing add piece soak hot water make bending easier As alternate highly curved portion leading edge can cut 1/8 sheet glue dry cut wing center glue back together using dihedral braces Wl scrap sheet used reenforce trailing edge 82 Model Aviation 5% nitro -$650 gallon 10% nitro $725 gallon 15% nitro $800 gallon 54 gallon drum 15% Custom Blended Bill Hager$21954 HARRYS HOBBIESWESHIP FREE WITH 100 GALLON ORDER 5214 N Dixie Drive Dayton Ohio 45414OM Fuel Dayton Nationals CANT GET ANY LIGHTER SMALLER OR SIMPLER THAN pulse commander quality American made rudder-only pulse proportional radio system offers lightest weight smallest size flute pack available Only 21 oz total airborne weight Baby system Rudder-only flying perfect way start RIC also provides relaxing changeof-pace experienced flyer units come completely wired tested guaranteed ni-cd batteries charger furnished flute pack Transmitter battery included Eveready No 276 9V dry battery equivalent required systems $75 complete Available 72080 72160 72240 72320 72400 72960 75640 531 532 533 534 535 MHz Ham license required 53 MHz frequencies BABY 10G75 Airborne weight21 oz 595 g 010 Pee Wee 020 planes up 36 span STANDARD 10G76 Airborne weight31 oz 88 gI Babe Bee slow flying Tee Dee 049 planes up 42 span BABY TWIN 10G75T STOMPER 10G77 Airborne weight23 oz 652 g Airborne weight35 oz 992 g 020 slow flying 049 planes hot 049 slow flying 15 ships up 40 span NOTE 27 MHz systems still available Baby 10G15 $6995 Baby Twin 1OG15T $7295 Standard 10G16 $7195 Stomper lOG 17 $7495 Please sand complete atalog Enclosed Si 00 refunded NAME first order Add SiC lot class mail return add $100 handling other ADDRESS joint Add 1/16 sheet ribs 1/32 sheeting top centersec tion completes basic wing con struction fuselage complete put wing place make fit pieces W2 W3 Finish off wing gluing place 1/32 sheeting over items Covering All open framework cov ered medium-weight tissue given couple coats clear dope tail surfaces covered just given sealing coat clear dope after final light sanding can made complete model sprayed final color coating Additional trim compromise tween scale accuracy flight perform ance Including correct bracing wires etc makes attractive looking model certainly increases drag hence reduces flyability So now time decide much detail put original model included cabane structure bracing wires top wing using black thread other details apart roundels drawn place India ink Color Schemes inclina tions towards flying finish ing perfectly authentic color scheme available real prototypes finished clear dope markings usual roundels black serial number fin A5319 ing typical must admit tempt ed use somehow doesnt seem right have World War aircraft wasnt painted green chose pro duction aircraft finish standard khaki-green black serials fin C4950 typical problem found scheme gave almost perfect camouflage local flying field making model diffi cult spot impossible photograph set photos taken turned out totally useless couldnt tell model stopped grass began Installation Weve already covered stallation actuator torque wire has installed remains put battery receiver fit compartment just ahead actuator small 1/16 sheet frame re quired isolate items actuator radio pieces have installed check torque wire still free oscillate rudder hinges havent frozen up im portant rudder moves correct direction commanded Flying Now interesting bit off flying field attitude toward singlechannel work its actually free fighting running around well its opinion ie model needs trimmed flying its own radio stop flying away So have rudder control pitch stability has built model first thing field varying wing incidence CG location slightly make sure flight path isnt just series stalls usually followed heart rendering sound compacting balsa Once youve got sorted out other adjust ment set rudder throw dont make either too sensitive too insensitive point its up good luck friend always says enjoy References Theres awful lot written about Bristol books used follow British Aeroplanes 1914-1918 J M Bruce Bristol Aircraft Since 1910 C H Barnes Warplanes First World War Fighters Vol 1 J M Bruce youre interested detailed model particular plane good selection photographs can found books show minor variations between types window cut-out etc Color details can found Aircraft Camouflage Markings 1907-1954 Bruce Robertson source used decorating prototype March 1977 83 AU I/ Em]
Edition: Model Aviation - 1977/03
Page Numbers: 42, 43, 44, 45, 46, 82, 83
Many years ahead its time 1916 British Bristol Monoplane fighter makes distinctive good-flying project single-channel RC may wish modify controls Cannon RC system IMAGINE FULLY streamlined mono plane fighter maximum speed vicinity 130 mph designed available 1916 being put production some freakish design very practical well-engineered air craft built established manufacturer Exactly Bristol Monoplane didnt see service Western Front still mystery True still some prejudice against monoplanes time period resulting much earlier flying accidents several monoplanes did make combat zone suc cessful Bristol Monoplane however did not. token quantity made shipped Middle East saw some action general no real use made potent Ml excuses producing Bristol landing speed too high small Western Front aero dromes does seem ex cuse serious defect design Whatever real reasons fact remains aircraft did see action serious way remains mysteries Government thinking WW interested greater historical details list ref erences can found end article second Bristol Monoplane Ive built first being free-flight version powered aged diesel about fifty percent bigger model shown turned out excel lent flier also world traveller Con structed California first flown Sepulveda Basin taken Eng land longer trips back flown casually sum mer its flights lets make just flight type flew away dark next heard local Police Station after being picked off some irate citizens roof However thats another model another time lets get back current version Construction Construction can seen quite conventional following notes dis cuss some building details se quences Landing Gear building sequence prefer items made order required completion part isnt interrupted having stop work make another subsection first see what mean Anyhow system leads us start withguess whatthe undercarriage has installed about half way through fuselage construction its good idea get ready now main legs made single piece wire plans show true shape before final bends put Try make basic frame accurately possible after carefully bend down leg equally model will sit correctly its com pleted frame has bent sat isfactorily axle can cut tached lashed V leg fine copper wire soldered place wheels can either attached now after model has finished painted usually latter Left looking servos maybe Amidships double-ended Ace magnetic actuator batteries receiver drop forward compartment Note bearing provided torque rod bulkhead behind actuator Depending experience may wish substitute nylon wing-mount bolts dowels rubberbands Below The fuselage made old fash ioned method laying out both sides together over other After firewall cross piece forward TE place sides draw together stern post Landing gear installed stage photo spray painting tends cover everything everybody completed undercarriage can now put side get next item fuselage Fuselage begins selecting about half dozen good quality lengths /s sq basic fuselage box Now spread plans building board cover fuselage section sheet wax paper Pin down two Is-sq strips upper lower longerons cement /8-sq spacers place frame dry remove board make another exactly same latter fuselage side setting up /8-ply firewall cut out drilled engine mounting bolts both fuselage frames available should sanded very lightly joined gether -sq spacers firewall Putting side moment well prepare under-carriage unit installation Bind using carpei thread two strips /t X / wire smearing ce ment over combination hold U/C unit firmly place stall fuselage shown plan Select good flat sheet 1/16 balsa cut out tailplane fin Sand 42 Model Aviation Bristol Scout J W Headley Right Not bad looking planform ship designed 60 years ago machine gun pilot figure add considerable realism Roundels rudder stripes nostalgic Above What really unusual its day high degree streamlining Although monoplane keep popping up years pilots biplane fixation lasted 30s Open cockpits persisted early airliners Interesting scale up job Left The framework essentially simple un less figure stringers work Center section sheeted first rib sections side fuselage Cowling shaped balsa block short nose moment balance works Out very well March1977 43 Lx WIRE jZrz -I BLOCK BALSA COWL / oprOML\ SI______ PEE WEE 020 BLOCK BALSA 132SHSIDES FROM TO 3 K 2 SH FLOOR ALL BETWEEN I2 I\ 85L i6 SH WING RESTS- TO 4 rz 0 506 _____ 7 3 FRAMES 46SH ACTUATOR MOUNT SEW RUDDER TO FIN ______ FUSELAGE-8 SQ DOUBLER146SH PLAN OF C_________RUDDER WING DOWELS________-PLASTIC TUBE 50STRINGERS1/16 TORQUE WIRE6 SF1 TAILSKID ACTUATOR RECEIVER 14 0/A WHEELS NOIFMOST STRINGERS OMITTED FOR CLARITY N 0 S I-JIG PLY FULL-SIZE PLANS AVAILABLE E PAGE 96 BRISTOL MiB SCOUT DESIGNED AND DRAWN ~24 7w. S F/A BIND u/c TO 8SH CROSS PIECESi MACHINE GUN SCRAP BALSA StLL6L LID1BLJ c / H 0 fl 9 I 9K _H &6& 9 SUOGOIJiOBdS IeJeew UMO jnoA dogeAep o Aiesse -eu eq hIM uBisep SI4 o~j--- A3uej S egei oqM sues -d eip siSse o ueds OUIM \I U- S O PBZIS 5 ugid siia\4 items lightly over gent ly radius edges after can cemented basic fuselage Before glue dries make sure tailplane lined up correctly both top front view also fin mounted right angles tailplane Nows good time start putting some radio gear before fuselage gets too closed An Ace radio used prototype Baby Twin ac tuator now can fitted stage pet mounting schemes unit bolt place shown plans existing bolt holds actuator together replaced about half inch longer actually screws actuator place plane youve never tried sys tem want first thing epoxy U-shaped arms magnet holders together top bottom original center bolt removed whole thing doesnt collapse heap coils magnets actuator mount piece hard 1/s sheet cemented fuselage behind rear U/C crossmember has nut epoxied underneath attachment bolt make cement place now temporarily install actuator Bend up front end rudder torque wire make wire support frame noting has scrap ply attached wire bearing install both items rear end torque wire sup ported scrap plastic tubing epoxied lower longerons piece inner Nyrod good job Dont bend up rear torque wire yet until rudder has attached Cut rudder hard 1/16 sheet sand lightly drill series 1/16-dia holes along front edge corre sponding set along back edge fin Because wood grain direction fin added 1/32 sheet doubler along aft edge prevent sewing thread pulling through wood dont forget piece holes drilled sew rudder fin smear ce ment over thread except center cross over region coat ce ment holds thread place also takes some sloppiness out rud der movement shouldnt prevent rudder swinging freely final bend torque wire now can made also loop wire attaches rudder Take care doing final bending ensure actuator centralized Take actuator out fuselage now will become encrusted balsa dust other gook Lets get back fuselage construc tion Put 1/32 sheeting sides radio compartment 1/16 floor cut out little crescent-shaped frames attach Now 3/32 stringers As can see ce mented top rather being notched frames prefer sys tem couple reasons allows line up stringers better also dont have cut out little squares frames Cement stringers place attach 1/16 sheet wing rests few small items needed carved block balsa first engine cowling finished should look like inverted U next item small fairing block lower fuselage just behind under carriage legs last thing en gine spinner spinner starts making backplate piece 1/16 ply balsa fairing cemented top dont forget carve little tunnel block propeller prototype made spinner blunt end Legg stocking container epoxied ply backplate however balsa version just good Because size cowling its necessary modify engines needle valve slightly can twiddled outside Cut needle valve half just below knurled top solder length brass tubing between small hole has cut back cowl let needle protrude also let fuel tube stick out Thats about fuselage give everything light sanding well get wings plans show two views wing basic structure completely centersection final configura tion first cover basic wing plan wax paper well start Wing wing made piece flat building board cut cen ter rejoined dihedral braces So begin pinning trailing edge continued page 82 46 Model Aviation Right This rear-quarter view flying field suggests scale job model much different typical original design therefore flies just well Rudder hinging just Figure-8 stitch Bristol Scout Below The real ship might have looked like poised sands Middle East stationed cooling arrangement big spinner aircooled engine became new thing about 1940 No mistaking young lady feels about dads Bristol spinner used blunt end Leggs Container epoxied ply disk RC Soaring/Pruss continued page 24 Brochures two dollars Icarus hang glider detailed information can obtained Icarus Aircraft 37 S Euclid SuiteS Pasadena CA 91101 Cross Country Dick Beltz pumped informa tion cause hes modest comes informa tion latest club hold crosscountry race Lancaster PA Area Soaring Society LASS held event Milton Hershey School Hershey PA Sept 25 course nearly eight miles school grounds win ner Dick Beltz own design Pokey time 49 minutes Dick uti lized high-start five launches Other finishers Don Goughnour 1 hr 06 mm 7 launches Bob Curry 1 hr 13 mm 7 launches Jerry Zeigenfuse 2 hr 04 mm 9 launches interesting note Beltzs over pace just behind set Mrlik/ Tiahrt Greater Detroit Soaring Hiking Society last July during Great Bicentennial RC Sailplane Race Yet Beltz averaged little over mile half per launch Detroit team over 35/I distance/launch ratio Since Great Race much arm chair flying has done fliers competed also observed also some just read about should remembered San Fernando Valley Silent Flyers got race business started happened two years ago inauguration Desert Dash unheard goal 20 miles SFVSFs have recent ly run third other two set up run downwind Now planes compete races downwind direction flight necessarily cut out crosscountry flying closed course flown Example super floater has its best glide ratio 101 say 10 mph know arent going cross much country have fly 10 mph headwind ap parent clubs entered Great Race However some points discussed since last summer can passed whatever its worth de partment super floater bird racing consider opposite extreme Nelson KA-6 new scene soaring Nelson KA-6 fibreglass sailplaneall fibreglass wings tail included appeared scene about eight years ago Weight nearly 11 pounds wing loading over 24 ounces per square foot Stall ing speed about 15 mph L/D about 301 about 35 mph Simply put meant mile high KA-6 could fly 30 miles encountering other thermal Now could find thermal did still thermal 30 miles flier should able find another race course likes Great Race could flown approximately hour 30 minutes utilizing launch above figures merely hypothetical However prac ticability such plane such race must questioned First stall speed 15 mph large landing zones have carefully select ed damage incurred plane type repair required usually beyond Hot Stuff/Monokote requirements Launching requires brute strength 12-volt winch ROG Rise Off Ground imperative cross-country courses can pro vide latter requirements Furthermore because such high aspect ratio visibility such plane good other 12-foot sailplanes mile high would impractical altitude reach doesnt mean ther mals couldnt encountered often course flown lower altitudes however possibility frequent landings would also have considered seems racing per formance gap between KA-6 days popular kits crosscountry racing aspect competition Yet gap can closed todays kits designed around precision/duration tasks performance gap reversed con siders KA-6 type precision/duration spot landing Todays designs ballasted should perform very well cross-country work analyzes FAI scores last summer can seen happy compromise can exist between lazy afternoon floater high performing KA-6 type can surmise outcome race between floater fewer launches required ship much higher L/D possibly requiring twice tows say plane higher wing loading possibly higher L/D would need launch often would necessarily get better mileage time went up point consider trade-off anticipated would advantage ship flew faster required launches could get few times less overall time ground flew slower Something else came arm chair analysis team effort must winning What pit crew auto racing ground crew fli ers Whatever method launching crew coordination must perfected brought up point solution seems long overdue point standardize band signals within soaring regards winch operation relocating upwind pul leys extending line length shortening line length etc would valuable especially outside assistance re quired during contests relocating cause wind shifts example seems signals must effi cient crew coordination during crosscountry work So have al ready devised system workswith out use public address system send way perhaps form standardization can take place meantime talk club cross-country flying pass results way Dan Pruss Rt 2 Box 490 Plainfield IL 60544 Bristol Scout/Headley continued page 46 lower /8-sq spars down board cement place 1/32 sheet ribs upper /8-sq spar tricky item next bending /8-sq leading edge Before try ing add piece soak hot water make bending easier As alternate highly curved portion leading edge can cut 1/8 sheet glue dry cut wing center glue back together using dihedral braces Wl scrap sheet used reenforce trailing edge 82 Model Aviation 5% nitro -$650 gallon 10% nitro $725 gallon 15% nitro $800 gallon 54 gallon drum 15% Custom Blended Bill Hager$21954 HARRYS HOBBIESWESHIP FREE WITH 100 GALLON ORDER 5214 N Dixie Drive Dayton Ohio 45414OM Fuel Dayton Nationals CANT GET ANY LIGHTER SMALLER OR SIMPLER THAN pulse commander quality American made rudder-only pulse proportional radio system offers lightest weight smallest size flute pack available Only 21 oz total airborne weight Baby system Rudder-only flying perfect way start RIC also provides relaxing changeof-pace experienced flyer units come completely wired tested guaranteed ni-cd batteries charger furnished flute pack Transmitter battery included Eveready No 276 9V dry battery equivalent required systems $75 complete Available 72080 72160 72240 72320 72400 72960 75640 531 532 533 534 535 MHz Ham license required 53 MHz frequencies BABY 10G75 Airborne weight21 oz 595 g 010 Pee Wee 020 planes up 36 span STANDARD 10G76 Airborne weight31 oz 88 gI Babe Bee slow flying Tee Dee 049 planes up 42 span BABY TWIN 10G75T STOMPER 10G77 Airborne weight23 oz 652 g Airborne weight35 oz 992 g 020 slow flying 049 planes hot 049 slow flying 15 ships up 40 span NOTE 27 MHz systems still available Baby 10G15 $6995 Baby Twin 1OG15T $7295 Standard 10G16 $7195 Stomper lOG 17 $7495 Please sand complete atalog Enclosed Si 00 refunded NAME first order Add SiC lot class mail return add $100 handling other ADDRESS joint Add 1/16 sheet ribs 1/32 sheeting top centersec tion completes basic wing con struction fuselage complete put wing place make fit pieces W2 W3 Finish off wing gluing place 1/32 sheeting over items Covering All open framework cov ered medium-weight tissue given couple coats clear dope tail surfaces covered just given sealing coat clear dope after final light sanding can made complete model sprayed final color coating Additional trim compromise tween scale accuracy flight perform ance Including correct bracing wires etc makes attractive looking model certainly increases drag hence reduces flyability So now time decide much detail put original model included cabane structure bracing wires top wing using black thread other details apart roundels drawn place India ink Color Schemes inclina tions towards flying finish ing perfectly authentic color scheme available real prototypes finished clear dope markings usual roundels black serial number fin A5319 ing typical must admit tempt ed use somehow doesnt seem right have World War aircraft wasnt painted green chose pro duction aircraft finish standard khaki-green black serials fin C4950 typical problem found scheme gave almost perfect camouflage local flying field making model diffi cult spot impossible photograph set photos taken turned out totally useless couldnt tell model stopped grass began Installation Weve already covered stallation actuator torque wire has installed remains put battery receiver fit compartment just ahead actuator small 1/16 sheet frame re quired isolate items actuator radio pieces have installed check torque wire still free oscillate rudder hinges havent frozen up im portant rudder moves correct direction commanded Flying Now interesting bit off flying field attitude toward singlechannel work its actually free fighting running around well its opinion ie model needs trimmed flying its own radio stop flying away So have rudder control pitch stability has built model first thing field varying wing incidence CG location slightly make sure flight path isnt just series stalls usually followed heart rendering sound compacting balsa Once youve got sorted out other adjust ment set rudder throw dont make either too sensitive too insensitive point its up good luck friend always says enjoy References Theres awful lot written about Bristol books used follow British Aeroplanes 1914-1918 J M Bruce Bristol Aircraft Since 1910 C H Barnes Warplanes First World War Fighters Vol 1 J M Bruce youre interested detailed model particular plane good selection photographs can found books show minor variations between types window cut-out etc Color details can found Aircraft Camouflage Markings 1907-1954 Bruce Robertson source used decorating prototype March 1977 83 AU I/ Em]
Edition: Model Aviation - 1977/03
Page Numbers: 42, 43, 44, 45, 46, 82, 83
Many years ahead its time 1916 British Bristol Monoplane fighter makes distinctive good-flying project single-channel RC may wish modify controls Cannon RC system IMAGINE FULLY streamlined mono plane fighter maximum speed vicinity 130 mph designed available 1916 being put production some freakish design very practical well-engineered air craft built established manufacturer Exactly Bristol Monoplane didnt see service Western Front still mystery True still some prejudice against monoplanes time period resulting much earlier flying accidents several monoplanes did make combat zone suc cessful Bristol Monoplane however did not. token quantity made shipped Middle East saw some action general no real use made potent Ml excuses producing Bristol landing speed too high small Western Front aero dromes does seem ex cuse serious defect design Whatever real reasons fact remains aircraft did see action serious way remains mysteries Government thinking WW interested greater historical details list ref erences can found end article second Bristol Monoplane Ive built first being free-flight version powered aged diesel about fifty percent bigger model shown turned out excel lent flier also world traveller Con structed California first flown Sepulveda Basin taken Eng land longer trips back flown casually sum mer its flights lets make just flight type flew away dark next heard local Police Station after being picked off some irate citizens roof However thats another model another time lets get back current version Construction Construction can seen quite conventional following notes dis cuss some building details se quences Landing Gear building sequence prefer items made order required completion part isnt interrupted having stop work make another subsection first see what mean Anyhow system leads us start withguess whatthe undercarriage has installed about half way through fuselage construction its good idea get ready now main legs made single piece wire plans show true shape before final bends put Try make basic frame accurately possible after carefully bend down leg equally model will sit correctly its com pleted frame has bent sat isfactorily axle can cut tached lashed V leg fine copper wire soldered place wheels can either attached now after model has finished painted usually latter Left looking servos maybe Amidships double-ended Ace magnetic actuator batteries receiver drop forward compartment Note bearing provided torque rod bulkhead behind actuator Depending experience may wish substitute nylon wing-mount bolts dowels rubberbands Below The fuselage made old fash ioned method laying out both sides together over other After firewall cross piece forward TE place sides draw together stern post Landing gear installed stage photo spray painting tends cover everything everybody completed undercarriage can now put side get next item fuselage Fuselage begins selecting about half dozen good quality lengths /s sq basic fuselage box Now spread plans building board cover fuselage section sheet wax paper Pin down two Is-sq strips upper lower longerons cement /8-sq spacers place frame dry remove board make another exactly same latter fuselage side setting up /8-ply firewall cut out drilled engine mounting bolts both fuselage frames available should sanded very lightly joined gether -sq spacers firewall Putting side moment well prepare under-carriage unit installation Bind using carpei thread two strips /t X / wire smearing ce ment over combination hold U/C unit firmly place stall fuselage shown plan Select good flat sheet 1/16 balsa cut out tailplane fin Sand 42 Model Aviation Bristol Scout J W Headley Right Not bad looking planform ship designed 60 years ago machine gun pilot figure add considerable realism Roundels rudder stripes nostalgic Above What really unusual its day high degree streamlining Although monoplane keep popping up years pilots biplane fixation lasted 30s Open cockpits persisted early airliners Interesting scale up job Left The framework essentially simple un less figure stringers work Center section sheeted first rib sections side fuselage Cowling shaped balsa block short nose moment balance works Out very well March1977 43 Lx WIRE jZrz -I BLOCK BALSA COWL / oprOML\ SI______ PEE WEE 020 BLOCK BALSA 132SHSIDES FROM TO 3 K 2 SH FLOOR ALL BETWEEN I2 I\ 85L i6 SH WING RESTS- TO 4 rz 0 506 _____ 7 3 FRAMES 46SH ACTUATOR MOUNT SEW RUDDER TO FIN ______ FUSELAGE-8 SQ DOUBLER146SH PLAN OF C_________RUDDER WING DOWELS________-PLASTIC TUBE 50STRINGERS1/16 TORQUE WIRE6 SF1 TAILSKID ACTUATOR RECEIVER 14 0/A WHEELS NOIFMOST STRINGERS OMITTED FOR CLARITY N 0 S I-JIG PLY FULL-SIZE PLANS AVAILABLE E PAGE 96 BRISTOL MiB SCOUT DESIGNED AND DRAWN ~24 7w. S F/A BIND u/c TO 8SH CROSS PIECESi MACHINE GUN SCRAP BALSA StLL6L LID1BLJ c / H 0 fl 9 I 9K _H &6& 9 SUOGOIJiOBdS IeJeew UMO jnoA dogeAep o Aiesse -eu eq hIM uBisep SI4 o~j--- A3uej S egei oqM sues -d eip siSse o ueds OUIM \I U- S O PBZIS 5 ugid siia\4 items lightly over gent ly radius edges after can cemented basic fuselage Before glue dries make sure tailplane lined up correctly both top front view also fin mounted right angles tailplane Nows good time start putting some radio gear before fuselage gets too closed An Ace radio used prototype Baby Twin ac tuator now can fitted stage pet mounting schemes unit bolt place shown plans existing bolt holds actuator together replaced about half inch longer actually screws actuator place plane youve never tried sys tem want first thing epoxy U-shaped arms magnet holders together top bottom original center bolt removed whole thing doesnt collapse heap coils magnets actuator mount piece hard 1/s sheet cemented fuselage behind rear U/C crossmember has nut epoxied underneath attachment bolt make cement place now temporarily install actuator Bend up front end rudder torque wire make wire support frame noting has scrap ply attached wire bearing install both items rear end torque wire sup ported scrap plastic tubing epoxied lower longerons piece inner Nyrod good job Dont bend up rear torque wire yet until rudder has attached Cut rudder hard 1/16 sheet sand lightly drill series 1/16-dia holes along front edge corre sponding set along back edge fin Because wood grain direction fin added 1/32 sheet doubler along aft edge prevent sewing thread pulling through wood dont forget piece holes drilled sew rudder fin smear ce ment over thread except center cross over region coat ce ment holds thread place also takes some sloppiness out rud der movement shouldnt prevent rudder swinging freely final bend torque wire now can made also loop wire attaches rudder Take care doing final bending ensure actuator centralized Take actuator out fuselage now will become encrusted balsa dust other gook Lets get back fuselage construc tion Put 1/32 sheeting sides radio compartment 1/16 floor cut out little crescent-shaped frames attach Now 3/32 stringers As can see ce mented top rather being notched frames prefer sys tem couple reasons allows line up stringers better also dont have cut out little squares frames Cement stringers place attach 1/16 sheet wing rests few small items needed carved block balsa first engine cowling finished should look like inverted U next item small fairing block lower fuselage just behind under carriage legs last thing en gine spinner spinner starts making backplate piece 1/16 ply balsa fairing cemented top dont forget carve little tunnel block propeller prototype made spinner blunt end Legg stocking container epoxied ply backplate however balsa version just good Because size cowling its necessary modify engines needle valve slightly can twiddled outside Cut needle valve half just below knurled top solder length brass tubing between small hole has cut back cowl let needle protrude also let fuel tube stick out Thats about fuselage give everything light sanding well get wings plans show two views wing basic structure completely centersection final configura tion first cover basic wing plan wax paper well start Wing wing made piece flat building board cut cen ter rejoined dihedral braces So begin pinning trailing edge continued page 82 46 Model Aviation Right This rear-quarter view flying field suggests scale job model much different typical original design therefore flies just well Rudder hinging just Figure-8 stitch Bristol Scout Below The real ship might have looked like poised sands Middle East stationed cooling arrangement big spinner aircooled engine became new thing about 1940 No mistaking young lady feels about dads Bristol spinner used blunt end Leggs Container epoxied ply disk RC Soaring/Pruss continued page 24 Brochures two dollars Icarus hang glider detailed information can obtained Icarus Aircraft 37 S Euclid SuiteS Pasadena CA 91101 Cross Country Dick Beltz pumped informa tion cause hes modest comes informa tion latest club hold crosscountry race Lancaster PA Area Soaring Society LASS held event Milton Hershey School Hershey PA Sept 25 course nearly eight miles school grounds win ner Dick Beltz own design Pokey time 49 minutes Dick uti lized high-start five launches Other finishers Don Goughnour 1 hr 06 mm 7 launches Bob Curry 1 hr 13 mm 7 launches Jerry Zeigenfuse 2 hr 04 mm 9 launches interesting note Beltzs over pace just behind set Mrlik/ Tiahrt Greater Detroit Soaring Hiking Society last July during Great Bicentennial RC Sailplane Race Yet Beltz averaged little over mile half per launch Detroit team over 35/I distance/launch ratio Since Great Race much arm chair flying has done fliers competed also observed also some just read about should remembered San Fernando Valley Silent Flyers got race business started happened two years ago inauguration Desert Dash unheard goal 20 miles SFVSFs have recent ly run third other two set up run downwind Now planes compete races downwind direction flight necessarily cut out crosscountry flying closed course flown Example super floater has its best glide ratio 101 say 10 mph know arent going cross much country have fly 10 mph headwind ap parent clubs entered Great Race However some points discussed since last summer can passed whatever its worth de partment super floater bird racing consider opposite extreme Nelson KA-6 new scene soaring Nelson KA-6 fibreglass sailplaneall fibreglass wings tail included appeared scene about eight years ago Weight nearly 11 pounds wing loading over 24 ounces per square foot Stall ing speed about 15 mph L/D about 301 about 35 mph Simply put meant mile high KA-6 could fly 30 miles encountering other thermal Now could find thermal did still thermal 30 miles flier should able find another race course likes Great Race could flown approximately hour 30 minutes utilizing launch above figures merely hypothetical However prac ticability such plane such race must questioned First stall speed 15 mph large landing zones have carefully select ed damage incurred plane type repair required usually beyond Hot Stuff/Monokote requirements Launching requires brute strength 12-volt winch ROG Rise Off Ground imperative cross-country courses can pro vide latter requirements Furthermore because such high aspect ratio visibility such plane good other 12-foot sailplanes mile high would impractical altitude reach doesnt mean ther mals couldnt encountered often course flown lower altitudes however possibility frequent landings would also have considered seems racing per formance gap between KA-6 days popular kits crosscountry racing aspect competition Yet gap can closed todays kits designed around precision/duration tasks performance gap reversed con siders KA-6 type precision/duration spot landing Todays designs ballasted should perform very well cross-country work analyzes FAI scores last summer can seen happy compromise can exist between lazy afternoon floater high performing KA-6 type can surmise outcome race between floater fewer launches required ship much higher L/D possibly requiring twice tows say plane higher wing loading possibly higher L/D would need launch often would necessarily get better mileage time went up point consider trade-off anticipated would advantage ship flew faster required launches could get few times less overall time ground flew slower Something else came arm chair analysis team effort must winning What pit crew auto racing ground crew fli ers Whatever method launching crew coordination must perfected brought up point solution seems long overdue point standardize band signals within soaring regards winch operation relocating upwind pul leys extending line length shortening line length etc would valuable especially outside assistance re quired during contests relocating cause wind shifts example seems signals must effi cient crew coordination during crosscountry work So have al ready devised system workswith out use public address system send way perhaps form standardization can take place meantime talk club cross-country flying pass results way Dan Pruss Rt 2 Box 490 Plainfield IL 60544 Bristol Scout/Headley continued page 46 lower /8-sq spars down board cement place 1/32 sheet ribs upper /8-sq spar tricky item next bending /8-sq leading edge Before try ing add piece soak hot water make bending easier As alternate highly curved portion leading edge can cut 1/8 sheet glue dry cut wing center glue back together using dihedral braces Wl scrap sheet used reenforce trailing edge 82 Model Aviation 5% nitro -$650 gallon 10% nitro $725 gallon 15% nitro $800 gallon 54 gallon drum 15% Custom Blended Bill Hager$21954 HARRYS HOBBIESWESHIP FREE WITH 100 GALLON ORDER 5214 N Dixie Drive Dayton Ohio 45414OM Fuel Dayton Nationals CANT GET ANY LIGHTER SMALLER OR SIMPLER THAN pulse commander quality American made rudder-only pulse proportional radio system offers lightest weight smallest size flute pack available Only 21 oz total airborne weight Baby system Rudder-only flying perfect way start RIC also provides relaxing changeof-pace experienced flyer units come completely wired tested guaranteed ni-cd batteries charger furnished flute pack Transmitter battery included Eveready No 276 9V dry battery equivalent required systems $75 complete Available 72080 72160 72240 72320 72400 72960 75640 531 532 533 534 535 MHz Ham license required 53 MHz frequencies BABY 10G75 Airborne weight21 oz 595 g 010 Pee Wee 020 planes up 36 span STANDARD 10G76 Airborne weight31 oz 88 gI Babe Bee slow flying Tee Dee 049 planes up 42 span BABY TWIN 10G75T STOMPER 10G77 Airborne weight23 oz 652 g Airborne weight35 oz 992 g 020 slow flying 049 planes hot 049 slow flying 15 ships up 40 span NOTE 27 MHz systems still available Baby 10G15 $6995 Baby Twin 1OG15T $7295 Standard 10G16 $7195 Stomper lOG 17 $7495 Please sand complete atalog Enclosed Si 00 refunded NAME first order Add SiC lot class mail return add $100 handling other ADDRESS joint Add 1/16 sheet ribs 1/32 sheeting top centersec tion completes basic wing con struction fuselage complete put wing place make fit pieces W2 W3 Finish off wing gluing place 1/32 sheeting over items Covering All open framework cov ered medium-weight tissue given couple coats clear dope tail surfaces covered just given sealing coat clear dope after final light sanding can made complete model sprayed final color coating Additional trim compromise tween scale accuracy flight perform ance Including correct bracing wires etc makes attractive looking model certainly increases drag hence reduces flyability So now time decide much detail put original model included cabane structure bracing wires top wing using black thread other details apart roundels drawn place India ink Color Schemes inclina tions towards flying finish ing perfectly authentic color scheme available real prototypes finished clear dope markings usual roundels black serial number fin A5319 ing typical must admit tempt ed use somehow doesnt seem right have World War aircraft wasnt painted green chose pro duction aircraft finish standard khaki-green black serials fin C4950 typical problem found scheme gave almost perfect camouflage local flying field making model diffi cult spot impossible photograph set photos taken turned out totally useless couldnt tell model stopped grass began Installation Weve already covered stallation actuator torque wire has installed remains put battery receiver fit compartment just ahead actuator small 1/16 sheet frame re quired isolate items actuator radio pieces have installed check torque wire still free oscillate rudder hinges havent frozen up im portant rudder moves correct direction commanded Flying Now interesting bit off flying field attitude toward singlechannel work its actually free fighting running around well its opinion ie model needs trimmed flying its own radio stop flying away So have rudder control pitch stability has built model first thing field varying wing incidence CG location slightly make sure flight path isnt just series stalls usually followed heart rendering sound compacting balsa Once youve got sorted out other adjust ment set rudder throw dont make either too sensitive too insensitive point its up good luck friend always says enjoy References Theres awful lot written about Bristol books used follow British Aeroplanes 1914-1918 J M Bruce Bristol Aircraft Since 1910 C H Barnes Warplanes First World War Fighters Vol 1 J M Bruce youre interested detailed model particular plane good selection photographs can found books show minor variations between types window cut-out etc Color details can found Aircraft Camouflage Markings 1907-1954 Bruce Robertson source used decorating prototype March 1977 83 AU I/ Em]
Edition: Model Aviation - 1977/03
Page Numbers: 42, 43, 44, 45, 46, 82, 83
Many years ahead its time 1916 British Bristol Monoplane fighter makes distinctive good-flying project single-channel RC may wish modify controls Cannon RC system IMAGINE FULLY streamlined mono plane fighter maximum speed vicinity 130 mph designed available 1916 being put production some freakish design very practical well-engineered air craft built established manufacturer Exactly Bristol Monoplane didnt see service Western Front still mystery True still some prejudice against monoplanes time period resulting much earlier flying accidents several monoplanes did make combat zone suc cessful Bristol Monoplane however did not. token quantity made shipped Middle East saw some action general no real use made potent Ml excuses producing Bristol landing speed too high small Western Front aero dromes does seem ex cuse serious defect design Whatever real reasons fact remains aircraft did see action serious way remains mysteries Government thinking WW interested greater historical details list ref erences can found end article second Bristol Monoplane Ive built first being free-flight version powered aged diesel about fifty percent bigger model shown turned out excel lent flier also world traveller Con structed California first flown Sepulveda Basin taken Eng land longer trips back flown casually sum mer its flights lets make just flight type flew away dark next heard local Police Station after being picked off some irate citizens roof However thats another model another time lets get back current version Construction Construction can seen quite conventional following notes dis cuss some building details se quences Landing Gear building sequence prefer items made order required completion part isnt interrupted having stop work make another subsection first see what mean Anyhow system leads us start withguess whatthe undercarriage has installed about half way through fuselage construction its good idea get ready now main legs made single piece wire plans show true shape before final bends put Try make basic frame accurately possible after carefully bend down leg equally model will sit correctly its com pleted frame has bent sat isfactorily axle can cut tached lashed V leg fine copper wire soldered place wheels can either attached now after model has finished painted usually latter Left looking servos maybe Amidships double-ended Ace magnetic actuator batteries receiver drop forward compartment Note bearing provided torque rod bulkhead behind actuator Depending experience may wish substitute nylon wing-mount bolts dowels rubberbands Below The fuselage made old fash ioned method laying out both sides together over other After firewall cross piece forward TE place sides draw together stern post Landing gear installed stage photo spray painting tends cover everything everybody completed undercarriage can now put side get next item fuselage Fuselage begins selecting about half dozen good quality lengths /s sq basic fuselage box Now spread plans building board cover fuselage section sheet wax paper Pin down two Is-sq strips upper lower longerons cement /8-sq spacers place frame dry remove board make another exactly same latter fuselage side setting up /8-ply firewall cut out drilled engine mounting bolts both fuselage frames available should sanded very lightly joined gether -sq spacers firewall Putting side moment well prepare under-carriage unit installation Bind using carpei thread two strips /t X / wire smearing ce ment over combination hold U/C unit firmly place stall fuselage shown plan Select good flat sheet 1/16 balsa cut out tailplane fin Sand 42 Model Aviation Bristol Scout J W Headley Right Not bad looking planform ship designed 60 years ago machine gun pilot figure add considerable realism Roundels rudder stripes nostalgic Above What really unusual its day high degree streamlining Although monoplane keep popping up years pilots biplane fixation lasted 30s Open cockpits persisted early airliners Interesting scale up job Left The framework essentially simple un less figure stringers work Center section sheeted first rib sections side fuselage Cowling shaped balsa block short nose moment balance works Out very well March1977 43 Lx WIRE jZrz -I BLOCK BALSA COWL / oprOML\ SI______ PEE WEE 020 BLOCK BALSA 132SHSIDES FROM TO 3 K 2 SH FLOOR ALL BETWEEN I2 I\ 85L i6 SH WING RESTS- TO 4 rz 0 506 _____ 7 3 FRAMES 46SH ACTUATOR MOUNT SEW RUDDER TO FIN ______ FUSELAGE-8 SQ DOUBLER146SH PLAN OF C_________RUDDER WING DOWELS________-PLASTIC TUBE 50STRINGERS1/16 TORQUE WIRE6 SF1 TAILSKID ACTUATOR RECEIVER 14 0/A WHEELS NOIFMOST STRINGERS OMITTED FOR CLARITY N 0 S I-JIG PLY FULL-SIZE PLANS AVAILABLE E PAGE 96 BRISTOL MiB SCOUT DESIGNED AND DRAWN ~24 7w. S F/A BIND u/c TO 8SH CROSS PIECESi MACHINE GUN SCRAP BALSA StLL6L LID1BLJ c / H 0 fl 9 I 9K _H &6& 9 SUOGOIJiOBdS IeJeew UMO jnoA dogeAep o Aiesse -eu eq hIM uBisep SI4 o~j--- A3uej S egei oqM sues -d eip siSse o ueds OUIM \I U- S O PBZIS 5 ugid siia\4 items lightly over gent ly radius edges after can cemented basic fuselage Before glue dries make sure tailplane lined up correctly both top front view also fin mounted right angles tailplane Nows good time start putting some radio gear before fuselage gets too closed An Ace radio used prototype Baby Twin ac tuator now can fitted stage pet mounting schemes unit bolt place shown plans existing bolt holds actuator together replaced about half inch longer actually screws actuator place plane youve never tried sys tem want first thing epoxy U-shaped arms magnet holders together top bottom original center bolt removed whole thing doesnt collapse heap coils magnets actuator mount piece hard 1/s sheet cemented fuselage behind rear U/C crossmember has nut epoxied underneath attachment bolt make cement place now temporarily install actuator Bend up front end rudder torque wire make wire support frame noting has scrap ply attached wire bearing install both items rear end torque wire sup ported scrap plastic tubing epoxied lower longerons piece inner Nyrod good job Dont bend up rear torque wire yet until rudder has attached Cut rudder hard 1/16 sheet sand lightly drill series 1/16-dia holes along front edge corre sponding set along back edge fin Because wood grain direction fin added 1/32 sheet doubler along aft edge prevent sewing thread pulling through wood dont forget piece holes drilled sew rudder fin smear ce ment over thread except center cross over region coat ce ment holds thread place also takes some sloppiness out rud der movement shouldnt prevent rudder swinging freely final bend torque wire now can made also loop wire attaches rudder Take care doing final bending ensure actuator centralized Take actuator out fuselage now will become encrusted balsa dust other gook Lets get back fuselage construc tion Put 1/32 sheeting sides radio compartment 1/16 floor cut out little crescent-shaped frames attach Now 3/32 stringers As can see ce mented top rather being notched frames prefer sys tem couple reasons allows line up stringers better also dont have cut out little squares frames Cement stringers place attach 1/16 sheet wing rests few small items needed carved block balsa first engine cowling finished should look like inverted U next item small fairing block lower fuselage just behind under carriage legs last thing en gine spinner spinner starts making backplate piece 1/16 ply balsa fairing cemented top dont forget carve little tunnel block propeller prototype made spinner blunt end Legg stocking container epoxied ply backplate however balsa version just good Because size cowling its necessary modify engines needle valve slightly can twiddled outside Cut needle valve half just below knurled top solder length brass tubing between small hole has cut back cowl let needle protrude also let fuel tube stick out Thats about fuselage give everything light sanding well get wings plans show two views wing basic structure completely centersection final configura tion first cover basic wing plan wax paper well start Wing wing made piece flat building board cut cen ter rejoined dihedral braces So begin pinning trailing edge continued page 82 46 Model Aviation Right This rear-quarter view flying field suggests scale job model much different typical original design therefore flies just well Rudder hinging just Figure-8 stitch Bristol Scout Below The real ship might have looked like poised sands Middle East stationed cooling arrangement big spinner aircooled engine became new thing about 1940 No mistaking young lady feels about dads Bristol spinner used blunt end Leggs Container epoxied ply disk RC Soaring/Pruss continued page 24 Brochures two dollars Icarus hang glider detailed information can obtained Icarus Aircraft 37 S Euclid SuiteS Pasadena CA 91101 Cross Country Dick Beltz pumped informa tion cause hes modest comes informa tion latest club hold crosscountry race Lancaster PA Area Soaring Society LASS held event Milton Hershey School Hershey PA Sept 25 course nearly eight miles school grounds win ner Dick Beltz own design Pokey time 49 minutes Dick uti lized high-start five launches Other finishers Don Goughnour 1 hr 06 mm 7 launches Bob Curry 1 hr 13 mm 7 launches Jerry Zeigenfuse 2 hr 04 mm 9 launches interesting note Beltzs over pace just behind set Mrlik/ Tiahrt Greater Detroit Soaring Hiking Society last July during Great Bicentennial RC Sailplane Race Yet Beltz averaged little over mile half per launch Detroit team over 35/I distance/launch ratio Since Great Race much arm chair flying has done fliers competed also observed also some just read about should remembered San Fernando Valley Silent Flyers got race business started happened two years ago inauguration Desert Dash unheard goal 20 miles SFVSFs have recent ly run third other two set up run downwind Now planes compete races downwind direction flight necessarily cut out crosscountry flying closed course flown Example super floater has its best glide ratio 101 say 10 mph know arent going cross much country have fly 10 mph headwind ap parent clubs entered Great Race However some points discussed since last summer can passed whatever its worth de partment super floater bird racing consider opposite extreme Nelson KA-6 new scene soaring Nelson KA-6 fibreglass sailplaneall fibreglass wings tail included appeared scene about eight years ago Weight nearly 11 pounds wing loading over 24 ounces per square foot Stall ing speed about 15 mph L/D about 301 about 35 mph Simply put meant mile high KA-6 could fly 30 miles encountering other thermal Now could find thermal did still thermal 30 miles flier should able find another race course likes Great Race could flown approximately hour 30 minutes utilizing launch above figures merely hypothetical However prac ticability such plane such race must questioned First stall speed 15 mph large landing zones have carefully select ed damage incurred plane type repair required usually beyond Hot Stuff/Monokote requirements Launching requires brute strength 12-volt winch ROG Rise Off Ground imperative cross-country courses can pro vide latter requirements Furthermore because such high aspect ratio visibility such plane good other 12-foot sailplanes mile high would impractical altitude reach doesnt mean ther mals couldnt encountered often course flown lower altitudes however possibility frequent landings would also have considered seems racing per formance gap between KA-6 days popular kits crosscountry racing aspect competition Yet gap can closed todays kits designed around precision/duration tasks performance gap reversed con siders KA-6 type precision/duration spot landing Todays designs ballasted should perform very well cross-country work analyzes FAI scores last summer can seen happy compromise can exist between lazy afternoon floater high performing KA-6 type can surmise outcome race between floater fewer launches required ship much higher L/D possibly requiring twice tows say plane higher wing loading possibly higher L/D would need launch often would necessarily get better mileage time went up point consider trade-off anticipated would advantage ship flew faster required launches could get few times less overall time ground flew slower Something else came arm chair analysis team effort must winning What pit crew auto racing ground crew fli ers Whatever method launching crew coordination must perfected brought up point solution seems long overdue point standardize band signals within soaring regards winch operation relocating upwind pul leys extending line length shortening line length etc would valuable especially outside assistance re quired during contests relocating cause wind shifts example seems signals must effi cient crew coordination during crosscountry work So have al ready devised system workswith out use public address system send way perhaps form standardization can take place meantime talk club cross-country flying pass results way Dan Pruss Rt 2 Box 490 Plainfield IL 60544 Bristol Scout/Headley continued page 46 lower /8-sq spars down board cement place 1/32 sheet ribs upper /8-sq spar tricky item next bending /8-sq leading edge Before try ing add piece soak hot water make bending easier As alternate highly curved portion leading edge can cut 1/8 sheet glue dry cut wing center glue back together using dihedral braces Wl scrap sheet used reenforce trailing edge 82 Model Aviation 5% nitro -$650 gallon 10% nitro $725 gallon 15% nitro $800 gallon 54 gallon drum 15% Custom Blended Bill Hager$21954 HARRYS HOBBIESWESHIP FREE WITH 100 GALLON ORDER 5214 N Dixie Drive Dayton Ohio 45414OM Fuel Dayton Nationals CANT GET ANY LIGHTER SMALLER OR SIMPLER THAN pulse commander quality American made rudder-only pulse proportional radio system offers lightest weight smallest size flute pack available Only 21 oz total airborne weight Baby system Rudder-only flying perfect way start RIC also provides relaxing changeof-pace experienced flyer units come completely wired tested guaranteed ni-cd batteries charger furnished flute pack Transmitter battery included Eveready No 276 9V dry battery equivalent required systems $75 complete Available 72080 72160 72240 72320 72400 72960 75640 531 532 533 534 535 MHz Ham license required 53 MHz frequencies BABY 10G75 Airborne weight21 oz 595 g 010 Pee Wee 020 planes up 36 span STANDARD 10G76 Airborne weight31 oz 88 gI Babe Bee slow flying Tee Dee 049 planes up 42 span BABY TWIN 10G75T STOMPER 10G77 Airborne weight23 oz 652 g Airborne weight35 oz 992 g 020 slow flying 049 planes hot 049 slow flying 15 ships up 40 span NOTE 27 MHz systems still available Baby 10G15 $6995 Baby Twin 1OG15T $7295 Standard 10G16 $7195 Stomper lOG 17 $7495 Please sand complete atalog Enclosed Si 00 refunded NAME first order Add SiC lot class mail return add $100 handling other ADDRESS joint Add 1/16 sheet ribs 1/32 sheeting top centersec tion completes basic wing con struction fuselage complete put wing place make fit pieces W2 W3 Finish off wing gluing place 1/32 sheeting over items Covering All open framework cov ered medium-weight tissue given couple coats clear dope tail surfaces covered just given sealing coat clear dope after final light sanding can made complete model sprayed final color coating Additional trim compromise tween scale accuracy flight perform ance Including correct bracing wires etc makes attractive looking model certainly increases drag hence reduces flyability So now time decide much detail put original model included cabane structure bracing wires top wing using black thread other details apart roundels drawn place India ink Color Schemes inclina tions towards flying finish ing perfectly authentic color scheme available real prototypes finished clear dope markings usual roundels black serial number fin A5319 ing typical must admit tempt ed use somehow doesnt seem right have World War aircraft wasnt painted green chose pro duction aircraft finish standard khaki-green black serials fin C4950 typical problem found scheme gave almost perfect camouflage local flying field making model diffi cult spot impossible photograph set photos taken turned out totally useless couldnt tell model stopped grass began Installation Weve already covered stallation actuator torque wire has installed remains put battery receiver fit compartment just ahead actuator small 1/16 sheet frame re quired isolate items actuator radio pieces have installed check torque wire still free oscillate rudder hinges havent frozen up im portant rudder moves correct direction commanded Flying Now interesting bit off flying field attitude toward singlechannel work its actually free fighting running around well its opinion ie model needs trimmed flying its own radio stop flying away So have rudder control pitch stability has built model first thing field varying wing incidence CG location slightly make sure flight path isnt just series stalls usually followed heart rendering sound compacting balsa Once youve got sorted out other adjust ment set rudder throw dont make either too sensitive too insensitive point its up good luck friend always says enjoy References Theres awful lot written about Bristol books used follow British Aeroplanes 1914-1918 J M Bruce Bristol Aircraft Since 1910 C H Barnes Warplanes First World War Fighters Vol 1 J M Bruce youre interested detailed model particular plane good selection photographs can found books show minor variations between types window cut-out etc Color details can found Aircraft Camouflage Markings 1907-1954 Bruce Robertson source used decorating prototype March 1977 83 AU I/ Em]
Edition: Model Aviation - 1977/03
Page Numbers: 42, 43, 44, 45, 46, 82, 83
Many years ahead its time 1916 British Bristol Monoplane fighter makes distinctive good-flying project single-channel RC may wish modify controls Cannon RC system IMAGINE FULLY streamlined mono plane fighter maximum speed vicinity 130 mph designed available 1916 being put production some freakish design very practical well-engineered air craft built established manufacturer Exactly Bristol Monoplane didnt see service Western Front still mystery True still some prejudice against monoplanes time period resulting much earlier flying accidents several monoplanes did make combat zone suc cessful Bristol Monoplane however did not. token quantity made shipped Middle East saw some action general no real use made potent Ml excuses producing Bristol landing speed too high small Western Front aero dromes does seem ex cuse serious defect design Whatever real reasons fact remains aircraft did see action serious way remains mysteries Government thinking WW interested greater historical details list ref erences can found end article second Bristol Monoplane Ive built first being free-flight version powered aged diesel about fifty percent bigger model shown turned out excel lent flier also world traveller Con structed California first flown Sepulveda Basin taken Eng land longer trips back flown casually sum mer its flights lets make just flight type flew away dark next heard local Police Station after being picked off some irate citizens roof However thats another model another time lets get back current version Construction Construction can seen quite conventional following notes dis cuss some building details se quences Landing Gear building sequence prefer items made order required completion part isnt interrupted having stop work make another subsection first see what mean Anyhow system leads us start withguess whatthe undercarriage has installed about half way through fuselage construction its good idea get ready now main legs made single piece wire plans show true shape before final bends put Try make basic frame accurately possible after carefully bend down leg equally model will sit correctly its com pleted frame has bent sat isfactorily axle can cut tached lashed V leg fine copper wire soldered place wheels can either attached now after model has finished painted usually latter Left looking servos maybe Amidships double-ended Ace magnetic actuator batteries receiver drop forward compartment Note bearing provided torque rod bulkhead behind actuator Depending experience may wish substitute nylon wing-mount bolts dowels rubberbands Below The fuselage made old fash ioned method laying out both sides together over other After firewall cross piece forward TE place sides draw together stern post Landing gear installed stage photo spray painting tends cover everything everybody completed undercarriage can now put side get next item fuselage Fuselage begins selecting about half dozen good quality lengths /s sq basic fuselage box Now spread plans building board cover fuselage section sheet wax paper Pin down two Is-sq strips upper lower longerons cement /8-sq spacers place frame dry remove board make another exactly same latter fuselage side setting up /8-ply firewall cut out drilled engine mounting bolts both fuselage frames available should sanded very lightly joined gether -sq spacers firewall Putting side moment well prepare under-carriage unit installation Bind using carpei thread two strips /t X / wire smearing ce ment over combination hold U/C unit firmly place stall fuselage shown plan Select good flat sheet 1/16 balsa cut out tailplane fin Sand 42 Model Aviation Bristol Scout J W Headley Right Not bad looking planform ship designed 60 years ago machine gun pilot figure add considerable realism Roundels rudder stripes nostalgic Above What really unusual its day high degree streamlining Although monoplane keep popping up years pilots biplane fixation lasted 30s Open cockpits persisted early airliners Interesting scale up job Left The framework essentially simple un less figure stringers work Center section sheeted first rib sections side fuselage Cowling shaped balsa block short nose moment balance works Out very well March1977 43 Lx WIRE jZrz -I BLOCK BALSA COWL / oprOML\ SI______ PEE WEE 020 BLOCK BALSA 132SHSIDES FROM TO 3 K 2 SH FLOOR ALL BETWEEN I2 I\ 85L i6 SH WING RESTS- TO 4 rz 0 506 _____ 7 3 FRAMES 46SH ACTUATOR MOUNT SEW RUDDER TO FIN ______ FUSELAGE-8 SQ DOUBLER146SH PLAN OF C_________RUDDER WING DOWELS________-PLASTIC TUBE 50STRINGERS1/16 TORQUE WIRE6 SF1 TAILSKID ACTUATOR RECEIVER 14 0/A WHEELS NOIFMOST STRINGERS OMITTED FOR CLARITY N 0 S I-JIG PLY FULL-SIZE PLANS AVAILABLE E PAGE 96 BRISTOL MiB SCOUT DESIGNED AND DRAWN ~24 7w. S F/A BIND u/c TO 8SH CROSS PIECESi MACHINE GUN SCRAP BALSA StLL6L LID1BLJ c / H 0 fl 9 I 9K _H &6& 9 SUOGOIJiOBdS IeJeew UMO jnoA dogeAep o Aiesse -eu eq hIM uBisep SI4 o~j--- A3uej S egei oqM sues -d eip siSse o ueds OUIM \I U- S O PBZIS 5 ugid siia\4 items lightly over gent ly radius edges after can cemented basic fuselage Before glue dries make sure tailplane lined up correctly both top front view also fin mounted right angles tailplane Nows good time start putting some radio gear before fuselage gets too closed An Ace radio used prototype Baby Twin ac tuator now can fitted stage pet mounting schemes unit bolt place shown plans existing bolt holds actuator together replaced about half inch longer actually screws actuator place plane youve never tried sys tem want first thing epoxy U-shaped arms magnet holders together top bottom original center bolt removed whole thing doesnt collapse heap coils magnets actuator mount piece hard 1/s sheet cemented fuselage behind rear U/C crossmember has nut epoxied underneath attachment bolt make cement place now temporarily install actuator Bend up front end rudder torque wire make wire support frame noting has scrap ply attached wire bearing install both items rear end torque wire sup ported scrap plastic tubing epoxied lower longerons piece inner Nyrod good job Dont bend up rear torque wire yet until rudder has attached Cut rudder hard 1/16 sheet sand lightly drill series 1/16-dia holes along front edge corre sponding set along back edge fin Because wood grain direction fin added 1/32 sheet doubler along aft edge prevent sewing thread pulling through wood dont forget piece holes drilled sew rudder fin smear ce ment over thread except center cross over region coat ce ment holds thread place also takes some sloppiness out rud der movement shouldnt prevent rudder swinging freely final bend torque wire now can made also loop wire attaches rudder Take care doing final bending ensure actuator centralized Take actuator out fuselage now will become encrusted balsa dust other gook Lets get back fuselage construc tion Put 1/32 sheeting sides radio compartment 1/16 floor cut out little crescent-shaped frames attach Now 3/32 stringers As can see ce mented top rather being notched frames prefer sys tem couple reasons allows line up stringers better also dont have cut out little squares frames Cement stringers place attach 1/16 sheet wing rests few small items needed carved block balsa first engine cowling finished should look like inverted U next item small fairing block lower fuselage just behind under carriage legs last thing en gine spinner spinner starts making backplate piece 1/16 ply balsa fairing cemented top dont forget carve little tunnel block propeller prototype made spinner blunt end Legg stocking container epoxied ply backplate however balsa version just good Because size cowling its necessary modify engines needle valve slightly can twiddled outside Cut needle valve half just below knurled top solder length brass tubing between small hole has cut back cowl let needle protrude also let fuel tube stick out Thats about fuselage give everything light sanding well get wings plans show two views wing basic structure completely centersection final configura tion first cover basic wing plan wax paper well start Wing wing made piece flat building board cut cen ter rejoined dihedral braces So begin pinning trailing edge continued page 82 46 Model Aviation Right This rear-quarter view flying field suggests scale job model much different typical original design therefore flies just well Rudder hinging just Figure-8 stitch Bristol Scout Below The real ship might have looked like poised sands Middle East stationed cooling arrangement big spinner aircooled engine became new thing about 1940 No mistaking young lady feels about dads Bristol spinner used blunt end Leggs Container epoxied ply disk RC Soaring/Pruss continued page 24 Brochures two dollars Icarus hang glider detailed information can obtained Icarus Aircraft 37 S Euclid SuiteS Pasadena CA 91101 Cross Country Dick Beltz pumped informa tion cause hes modest comes informa tion latest club hold crosscountry race Lancaster PA Area Soaring Society LASS held event Milton Hershey School Hershey PA Sept 25 course nearly eight miles school grounds win ner Dick Beltz own design Pokey time 49 minutes Dick uti lized high-start five launches Other finishers Don Goughnour 1 hr 06 mm 7 launches Bob Curry 1 hr 13 mm 7 launches Jerry Zeigenfuse 2 hr 04 mm 9 launches interesting note Beltzs over pace just behind set Mrlik/ Tiahrt Greater Detroit Soaring Hiking Society last July during Great Bicentennial RC Sailplane Race Yet Beltz averaged little over mile half per launch Detroit team over 35/I distance/launch ratio Since Great Race much arm chair flying has done fliers competed also observed also some just read about should remembered San Fernando Valley Silent Flyers got race business started happened two years ago inauguration Desert Dash unheard goal 20 miles SFVSFs have recent ly run third other two set up run downwind Now planes compete races downwind direction flight necessarily cut out crosscountry flying closed course flown Example super floater has its best glide ratio 101 say 10 mph know arent going cross much country have fly 10 mph headwind ap parent clubs entered Great Race However some points discussed since last summer can passed whatever its worth de partment super floater bird racing consider opposite extreme Nelson KA-6 new scene soaring Nelson KA-6 fibreglass sailplaneall fibreglass wings tail included appeared scene about eight years ago Weight nearly 11 pounds wing loading over 24 ounces per square foot Stall ing speed about 15 mph L/D about 301 about 35 mph Simply put meant mile high KA-6 could fly 30 miles encountering other thermal Now could find thermal did still thermal 30 miles flier should able find another race course likes Great Race could flown approximately hour 30 minutes utilizing launch above figures merely hypothetical However prac ticability such plane such race must questioned First stall speed 15 mph large landing zones have carefully select ed damage incurred plane type repair required usually beyond Hot Stuff/Monokote requirements Launching requires brute strength 12-volt winch ROG Rise Off Ground imperative cross-country courses can pro vide latter requirements Furthermore because such high aspect ratio visibility such plane good other 12-foot sailplanes mile high would impractical altitude reach doesnt mean ther mals couldnt encountered often course flown lower altitudes however possibility frequent landings would also have considered seems racing per formance gap between KA-6 days popular kits crosscountry racing aspect competition Yet gap can closed todays kits designed around precision/duration tasks performance gap reversed con siders KA-6 type precision/duration spot landing Todays designs ballasted should perform very well cross-country work analyzes FAI scores last summer can seen happy compromise can exist between lazy afternoon floater high performing KA-6 type can surmise outcome race between floater fewer launches required ship much higher L/D possibly requiring twice tows say plane higher wing loading possibly higher L/D would need launch often would necessarily get better mileage time went up point consider trade-off anticipated would advantage ship flew faster required launches could get few times less overall time ground flew slower Something else came arm chair analysis team effort must winning What pit crew auto racing ground crew fli ers Whatever method launching crew coordination must perfected brought up point solution seems long overdue point standardize band signals within soaring regards winch operation relocating upwind pul leys extending line length shortening line length etc would valuable especially outside assistance re quired during contests relocating cause wind shifts example seems signals must effi cient crew coordination during crosscountry work So have al ready devised system workswith out use public address system send way perhaps form standardization can take place meantime talk club cross-country flying pass results way Dan Pruss Rt 2 Box 490 Plainfield IL 60544 Bristol Scout/Headley continued page 46 lower /8-sq spars down board cement place 1/32 sheet ribs upper /8-sq spar tricky item next bending /8-sq leading edge Before try ing add piece soak hot water make bending easier As alternate highly curved portion leading edge can cut 1/8 sheet glue dry cut wing center glue back together using dihedral braces Wl scrap sheet used reenforce trailing edge 82 Model Aviation 5% nitro -$650 gallon 10% nitro $725 gallon 15% nitro $800 gallon 54 gallon drum 15% Custom Blended Bill Hager$21954 HARRYS HOBBIESWESHIP FREE WITH 100 GALLON ORDER 5214 N Dixie Drive Dayton Ohio 45414OM Fuel Dayton Nationals CANT GET ANY LIGHTER SMALLER OR SIMPLER THAN pulse commander quality American made rudder-only pulse proportional radio system offers lightest weight smallest size flute pack available Only 21 oz total airborne weight Baby system Rudder-only flying perfect way start RIC also provides relaxing changeof-pace experienced flyer units come completely wired tested guaranteed ni-cd batteries charger furnished flute pack Transmitter battery included Eveready No 276 9V dry battery equivalent required systems $75 complete Available 72080 72160 72240 72320 72400 72960 75640 531 532 533 534 535 MHz Ham license required 53 MHz frequencies BABY 10G75 Airborne weight21 oz 595 g 010 Pee Wee 020 planes up 36 span STANDARD 10G76 Airborne weight31 oz 88 gI Babe Bee slow flying Tee Dee 049 planes up 42 span BABY TWIN 10G75T STOMPER 10G77 Airborne weight23 oz 652 g Airborne weight35 oz 992 g 020 slow flying 049 planes hot 049 slow flying 15 ships up 40 span NOTE 27 MHz systems still available Baby 10G15 $6995 Baby Twin 1OG15T $7295 Standard 10G16 $7195 Stomper lOG 17 $7495 Please sand complete atalog Enclosed Si 00 refunded NAME first order Add SiC lot class mail return add $100 handling other ADDRESS joint Add 1/16 sheet ribs 1/32 sheeting top centersec tion completes basic wing con struction fuselage complete put wing place make fit pieces W2 W3 Finish off wing gluing place 1/32 sheeting over items Covering All open framework cov ered medium-weight tissue given couple coats clear dope tail surfaces covered just given sealing coat clear dope after final light sanding can made complete model sprayed final color coating Additional trim compromise tween scale accuracy flight perform ance Including correct bracing wires etc makes attractive looking model certainly increases drag hence reduces flyability So now time decide much detail put original model included cabane structure bracing wires top wing using black thread other details apart roundels drawn place India ink Color Schemes inclina tions towards flying finish ing perfectly authentic color scheme available real prototypes finished clear dope markings usual roundels black serial number fin A5319 ing typical must admit tempt ed use somehow doesnt seem right have World War aircraft wasnt painted green chose pro duction aircraft finish standard khaki-green black serials fin C4950 typical problem found scheme gave almost perfect camouflage local flying field making model diffi cult spot impossible photograph set photos taken turned out totally useless couldnt tell model stopped grass began Installation Weve already covered stallation actuator torque wire has installed remains put battery receiver fit compartment just ahead actuator small 1/16 sheet frame re quired isolate items actuator radio pieces have installed check torque wire still free oscillate rudder hinges havent frozen up im portant rudder moves correct direction commanded Flying Now interesting bit off flying field attitude toward singlechannel work its actually free fighting running around well its opinion ie model needs trimmed flying its own radio stop flying away So have rudder control pitch stability has built model first thing field varying wing incidence CG location slightly make sure flight path isnt just series stalls usually followed heart rendering sound compacting balsa Once youve got sorted out other adjust ment set rudder throw dont make either too sensitive too insensitive point its up good luck friend always says enjoy References Theres awful lot written about Bristol books used follow British Aeroplanes 1914-1918 J M Bruce Bristol Aircraft Since 1910 C H Barnes Warplanes First World War Fighters Vol 1 J M Bruce youre interested detailed model particular plane good selection photographs can found books show minor variations between types window cut-out etc Color details can found Aircraft Camouflage Markings 1907-1954 Bruce Robertson source used decorating prototype March 1977 83 AU I/ Em]
Edition: Model Aviation - 1977/03
Page Numbers: 42, 43, 44, 45, 46, 82, 83
Many years ahead its time 1916 British Bristol Monoplane fighter makes distinctive good-flying project single-channel RC may wish modify controls Cannon RC system IMAGINE FULLY streamlined mono plane fighter maximum speed vicinity 130 mph designed available 1916 being put production some freakish design very practical well-engineered air craft built established manufacturer Exactly Bristol Monoplane didnt see service Western Front still mystery True still some prejudice against monoplanes time period resulting much earlier flying accidents several monoplanes did make combat zone suc cessful Bristol Monoplane however did not. token quantity made shipped Middle East saw some action general no real use made potent Ml excuses producing Bristol landing speed too high small Western Front aero dromes does seem ex cuse serious defect design Whatever real reasons fact remains aircraft did see action serious way remains mysteries Government thinking WW interested greater historical details list ref erences can found end article second Bristol Monoplane Ive built first being free-flight version powered aged diesel about fifty percent bigger model shown turned out excel lent flier also world traveller Con structed California first flown Sepulveda Basin taken Eng land longer trips back flown casually sum mer its flights lets make just flight type flew away dark next heard local Police Station after being picked off some irate citizens roof However thats another model another time lets get back current version Construction Construction can seen quite conventional following notes dis cuss some building details se quences Landing Gear building sequence prefer items made order required completion part isnt interrupted having stop work make another subsection first see what mean Anyhow system leads us start withguess whatthe undercarriage has installed about half way through fuselage construction its good idea get ready now main legs made single piece wire plans show true shape before final bends put Try make basic frame accurately possible after carefully bend down leg equally model will sit correctly its com pleted frame has bent sat isfactorily axle can cut tached lashed V leg fine copper wire soldered place wheels can either attached now after model has finished painted usually latter Left looking servos maybe Amidships double-ended Ace magnetic actuator batteries receiver drop forward compartment Note bearing provided torque rod bulkhead behind actuator Depending experience may wish substitute nylon wing-mount bolts dowels rubberbands Below The fuselage made old fash ioned method laying out both sides together over other After firewall cross piece forward TE place sides draw together stern post Landing gear installed stage photo spray painting tends cover everything everybody completed undercarriage can now put side get next item fuselage Fuselage begins selecting about half dozen good quality lengths /s sq basic fuselage box Now spread plans building board cover fuselage section sheet wax paper Pin down two Is-sq strips upper lower longerons cement /8-sq spacers place frame dry remove board make another exactly same latter fuselage side setting up /8-ply firewall cut out drilled engine mounting bolts both fuselage frames available should sanded very lightly joined gether -sq spacers firewall Putting side moment well prepare under-carriage unit installation Bind using carpei thread two strips /t X / wire smearing ce ment over combination hold U/C unit firmly place stall fuselage shown plan Select good flat sheet 1/16 balsa cut out tailplane fin Sand 42 Model Aviation Bristol Scout J W Headley Right Not bad looking planform ship designed 60 years ago machine gun pilot figure add considerable realism Roundels rudder stripes nostalgic Above What really unusual its day high degree streamlining Although monoplane keep popping up years pilots biplane fixation lasted 30s Open cockpits persisted early airliners Interesting scale up job Left The framework essentially simple un less figure stringers work Center section sheeted first rib sections side fuselage Cowling shaped balsa block short nose moment balance works Out very well March1977 43 Lx WIRE jZrz -I BLOCK BALSA COWL / oprOML\ SI______ PEE WEE 020 BLOCK BALSA 132SHSIDES FROM TO 3 K 2 SH FLOOR ALL BETWEEN I2 I\ 85L i6 SH WING RESTS- TO 4 rz 0 506 _____ 7 3 FRAMES 46SH ACTUATOR MOUNT SEW RUDDER TO FIN ______ FUSELAGE-8 SQ DOUBLER146SH PLAN OF C_________RUDDER WING DOWELS________-PLASTIC TUBE 50STRINGERS1/16 TORQUE WIRE6 SF1 TAILSKID ACTUATOR RECEIVER 14 0/A WHEELS NOIFMOST STRINGERS OMITTED FOR CLARITY N 0 S I-JIG PLY FULL-SIZE PLANS AVAILABLE E PAGE 96 BRISTOL MiB SCOUT DESIGNED AND DRAWN ~24 7w. S F/A BIND u/c TO 8SH CROSS PIECESi MACHINE GUN SCRAP BALSA StLL6L LID1BLJ c / H 0 fl 9 I 9K _H &6& 9 SUOGOIJiOBdS IeJeew UMO jnoA dogeAep o Aiesse -eu eq hIM uBisep SI4 o~j--- A3uej S egei oqM sues -d eip siSse o ueds OUIM \I U- S O PBZIS 5 ugid siia\4 items lightly over gent ly radius edges after can cemented basic fuselage Before glue dries make sure tailplane lined up correctly both top front view also fin mounted right angles tailplane Nows good time start putting some radio gear before fuselage gets too closed An Ace radio used prototype Baby Twin ac tuator now can fitted stage pet mounting schemes unit bolt place shown plans existing bolt holds actuator together replaced about half inch longer actually screws actuator place plane youve never tried sys tem want first thing epoxy U-shaped arms magnet holders together top bottom original center bolt removed whole thing doesnt collapse heap coils magnets actuator mount piece hard 1/s sheet cemented fuselage behind rear U/C crossmember has nut epoxied underneath attachment bolt make cement place now temporarily install actuator Bend up front end rudder torque wire make wire support frame noting has scrap ply attached wire bearing install both items rear end torque wire sup ported scrap plastic tubing epoxied lower longerons piece inner Nyrod good job Dont bend up rear torque wire yet until rudder has attached Cut rudder hard 1/16 sheet sand lightly drill series 1/16-dia holes along front edge corre sponding set along back edge fin Because wood grain direction fin added 1/32 sheet doubler along aft edge prevent sewing thread pulling through wood dont forget piece holes drilled sew rudder fin smear ce ment over thread except center cross over region coat ce ment holds thread place also takes some sloppiness out rud der movement shouldnt prevent rudder swinging freely final bend torque wire now can made also loop wire attaches rudder Take care doing final bending ensure actuator centralized Take actuator out fuselage now will become encrusted balsa dust other gook Lets get back fuselage construc tion Put 1/32 sheeting sides radio compartment 1/16 floor cut out little crescent-shaped frames attach Now 3/32 stringers As can see ce mented top rather being notched frames prefer sys tem couple reasons allows line up stringers better also dont have cut out little squares frames Cement stringers place attach 1/16 sheet wing rests few small items needed carved block balsa first engine cowling finished should look like inverted U next item small fairing block lower fuselage just behind under carriage legs last thing en gine spinner spinner starts making backplate piece 1/16 ply balsa fairing cemented top dont forget carve little tunnel block propeller prototype made spinner blunt end Legg stocking container epoxied ply backplate however balsa version just good Because size cowling its necessary modify engines needle valve slightly can twiddled outside Cut needle valve half just below knurled top solder length brass tubing between small hole has cut back cowl let needle protrude also let fuel tube stick out Thats about fuselage give everything light sanding well get wings plans show two views wing basic structure completely centersection final configura tion first cover basic wing plan wax paper well start Wing wing made piece flat building board cut cen ter rejoined dihedral braces So begin pinning trailing edge continued page 82 46 Model Aviation Right This rear-quarter view flying field suggests scale job model much different typical original design therefore flies just well Rudder hinging just Figure-8 stitch Bristol Scout Below The real ship might have looked like poised sands Middle East stationed cooling arrangement big spinner aircooled engine became new thing about 1940 No mistaking young lady feels about dads Bristol spinner used blunt end Leggs Container epoxied ply disk RC Soaring/Pruss continued page 24 Brochures two dollars Icarus hang glider detailed information can obtained Icarus Aircraft 37 S Euclid SuiteS Pasadena CA 91101 Cross Country Dick Beltz pumped informa tion cause hes modest comes informa tion latest club hold crosscountry race Lancaster PA Area Soaring Society LASS held event Milton Hershey School Hershey PA Sept 25 course nearly eight miles school grounds win ner Dick Beltz own design Pokey time 49 minutes Dick uti lized high-start five launches Other finishers Don Goughnour 1 hr 06 mm 7 launches Bob Curry 1 hr 13 mm 7 launches Jerry Zeigenfuse 2 hr 04 mm 9 launches interesting note Beltzs over pace just behind set Mrlik/ Tiahrt Greater Detroit Soaring Hiking Society last July during Great Bicentennial RC Sailplane Race Yet Beltz averaged little over mile half per launch Detroit team over 35/I distance/launch ratio Since Great Race much arm chair flying has done fliers competed also observed also some just read about should remembered San Fernando Valley Silent Flyers got race business started happened two years ago inauguration Desert Dash unheard goal 20 miles SFVSFs have recent ly run third other two set up run downwind Now planes compete races downwind direction flight necessarily cut out crosscountry flying closed course flown Example super floater has its best glide ratio 101 say 10 mph know arent going cross much country have fly 10 mph headwind ap parent clubs entered Great Race However some points discussed since last summer can passed whatever its worth de partment super floater bird racing consider opposite extreme Nelson KA-6 new scene soaring Nelson KA-6 fibreglass sailplaneall fibreglass wings tail included appeared scene about eight years ago Weight nearly 11 pounds wing loading over 24 ounces per square foot Stall ing speed about 15 mph L/D about 301 about 35 mph Simply put meant mile high KA-6 could fly 30 miles encountering other thermal Now could find thermal did still thermal 30 miles flier should able find another race course likes Great Race could flown approximately hour 30 minutes utilizing launch above figures merely hypothetical However prac ticability such plane such race must questioned First stall speed 15 mph large landing zones have carefully select ed damage incurred plane type repair required usually beyond Hot Stuff/Monokote requirements Launching requires brute strength 12-volt winch ROG Rise Off Ground imperative cross-country courses can pro vide latter requirements Furthermore because such high aspect ratio visibility such plane good other 12-foot sailplanes mile high would impractical altitude reach doesnt mean ther mals couldnt encountered often course flown lower altitudes however possibility frequent landings would also have considered seems racing per formance gap between KA-6 days popular kits crosscountry racing aspect competition Yet gap can closed todays kits designed around precision/duration tasks performance gap reversed con siders KA-6 type precision/duration spot landing Todays designs ballasted should perform very well cross-country work analyzes FAI scores last summer can seen happy compromise can exist between lazy afternoon floater high performing KA-6 type can surmise outcome race between floater fewer launches required ship much higher L/D possibly requiring twice tows say plane higher wing loading possibly higher L/D would need launch often would necessarily get better mileage time went up point consider trade-off anticipated would advantage ship flew faster required launches could get few times less overall time ground flew slower Something else came arm chair analysis team effort must winning What pit crew auto racing ground crew fli ers Whatever method launching crew coordination must perfected brought up point solution seems long overdue point standardize band signals within soaring regards winch operation relocating upwind pul leys extending line length shortening line length etc would valuable especially outside assistance re quired during contests relocating cause wind shifts example seems signals must effi cient crew coordination during crosscountry work So have al ready devised system workswith out use public address system send way perhaps form standardization can take place meantime talk club cross-country flying pass results way Dan Pruss Rt 2 Box 490 Plainfield IL 60544 Bristol Scout/Headley continued page 46 lower /8-sq spars down board cement place 1/32 sheet ribs upper /8-sq spar tricky item next bending /8-sq leading edge Before try ing add piece soak hot water make bending easier As alternate highly curved portion leading edge can cut 1/8 sheet glue dry cut wing center glue back together using dihedral braces Wl scrap sheet used reenforce trailing edge 82 Model Aviation 5% nitro -$650 gallon 10% nitro $725 gallon 15% nitro $800 gallon 54 gallon drum 15% Custom Blended Bill Hager$21954 HARRYS HOBBIESWESHIP FREE WITH 100 GALLON ORDER 5214 N Dixie Drive Dayton Ohio 45414OM Fuel Dayton Nationals CANT GET ANY LIGHTER SMALLER OR SIMPLER THAN pulse commander quality American made rudder-only pulse proportional radio system offers lightest weight smallest size flute pack available Only 21 oz total airborne weight Baby system Rudder-only flying perfect way start RIC also provides relaxing changeof-pace experienced flyer units come completely wired tested guaranteed ni-cd batteries charger furnished flute pack Transmitter battery included Eveready No 276 9V dry battery equivalent required systems $75 complete Available 72080 72160 72240 72320 72400 72960 75640 531 532 533 534 535 MHz Ham license required 53 MHz frequencies BABY 10G75 Airborne weight21 oz 595 g 010 Pee Wee 020 planes up 36 span STANDARD 10G76 Airborne weight31 oz 88 gI Babe Bee slow flying Tee Dee 049 planes up 42 span BABY TWIN 10G75T STOMPER 10G77 Airborne weight23 oz 652 g Airborne weight35 oz 992 g 020 slow flying 049 planes hot 049 slow flying 15 ships up 40 span NOTE 27 MHz systems still available Baby 10G15 $6995 Baby Twin 1OG15T $7295 Standard 10G16 $7195 Stomper lOG 17 $7495 Please sand complete atalog Enclosed Si 00 refunded NAME first order Add SiC lot class mail return add $100 handling other ADDRESS joint Add 1/16 sheet ribs 1/32 sheeting top centersec tion completes basic wing con struction fuselage complete put wing place make fit pieces W2 W3 Finish off wing gluing place 1/32 sheeting over items Covering All open framework cov ered medium-weight tissue given couple coats clear dope tail surfaces covered just given sealing coat clear dope after final light sanding can made complete model sprayed final color coating Additional trim compromise tween scale accuracy flight perform ance Including correct bracing wires etc makes attractive looking model certainly increases drag hence reduces flyability So now time decide much detail put original model included cabane structure bracing wires top wing using black thread other details apart roundels drawn place India ink Color Schemes inclina tions towards flying finish ing perfectly authentic color scheme available real prototypes finished clear dope markings usual roundels black serial number fin A5319 ing typical must admit tempt ed use somehow doesnt seem right have World War aircraft wasnt painted green chose pro duction aircraft finish standard khaki-green black serials fin C4950 typical problem found scheme gave almost perfect camouflage local flying field making model diffi cult spot impossible photograph set photos taken turned out totally useless couldnt tell model stopped grass began Installation Weve already covered stallation actuator torque wire has installed remains put battery receiver fit compartment just ahead actuator small 1/16 sheet frame re quired isolate items actuator radio pieces have installed check torque wire still free oscillate rudder hinges havent frozen up im portant rudder moves correct direction commanded Flying Now interesting bit off flying field attitude toward singlechannel work its actually free fighting running around well its opinion ie model needs trimmed flying its own radio stop flying away So have rudder control pitch stability has built model first thing field varying wing incidence CG location slightly make sure flight path isnt just series stalls usually followed heart rendering sound compacting balsa Once youve got sorted out other adjust ment set rudder throw dont make either too sensitive too insensitive point its up good luck friend always says enjoy References Theres awful lot written about Bristol books used follow British Aeroplanes 1914-1918 J M Bruce Bristol Aircraft Since 1910 C H Barnes Warplanes First World War Fighters Vol 1 J M Bruce youre interested detailed model particular plane good selection photographs can found books show minor variations between types window cut-out etc Color details can found Aircraft Camouflage Markings 1907-1954 Bruce Robertson source used decorating prototype March 1977 83 AU I/ Em]