TIME WAS WHEN good sport model pattern model synonymous does have go back very far remember Taurus great Sunday flier well last word pattern year year 60-powered aircraft bred highly refined competition machine steady stream refinements making rather specialized expensive casual aerobatics Does acrobatic sport pilot need such ship answer would seem no es pecially since recent increases cost big engines fuel alone have made 19- 40-size airplane attractive Ever since powerful high-revving engines have market need continues racy looking simplified compact air craft manenverabiliy appropriate powerplants Hot Rock meets challenge head Its name incidentally derives gungho World War II fighter pilots flew no tomorrow two original Hot Rocks flown Taipan 21s produced near 40engine performance Others have pow ered K&B 40s well Supertigre 21s K&B 19s later producing adequate power realistic scale-like flying respect design approach first consideration wing airfoil provide full acrobatic capability full symmetrical airfoil chosen Next question wing area produce nice flat glide goal come out wing loading about 16 oz per sq ft 95-in root chord 8-in tip chord span 50 inches area came just 3 sq ft flying weight 52 oz wing loading 17 oz per sq ft just about perfect combination sweeping leading edge rearward tapering aikrons wider tip gives wing sweptback look Since machine designed aerobatics engine thrust line wing stabilizer incidence set zero Although initial design called tricycle landing gear phrase real pilots fly tail-draggers RCMs Dick Kidd influenced change two-wheel gear tail wheel Hot Rock test-flight procedure definitely departure convention per haps first involved simultaneous takeoff two previously unflown identical ships two prototypes identical almost respect including engines ra dios props spinners color trim evident difference ship bore number other number two Brice Roberts piloted number two flew number takeoff roll landing two-ship flight went off hitch characteristics two ships unbelievably identical After takeoff followed left 180 made pre-planned pass over runway As made trim pass Brice said trimmed full-down elevator fly ing holding bit down elevator just made same correction also flying bit down elevator Dur ing refueling next flight noticed carburetor barrel stop screw worked loose fallen out during first flight number two ship minus same screw both failed lock barrel stop screw After correcting elevator trim several ten-minute flights made ships went smoothly through pattern ma neuvers difficulty experienced formation flight ships being identical avoid either pilot flying wrong ship concentrated keeping eyes ship flying takeoff landing few moments some doubts ship responsible may elect build pair Hot Rocks duplicate first flight no doubt will choose build just Construction Assembly model straightfor ward rather bore now glue description have provided strength simplest construction main gear dural screwed mount epoxied wing core dural may replaced using con ventional hardwood gear blocks /s music wire use plywood gear door covers bolt covers music wire tail wheel hardware set up installed fuselage prior attaching stab rudder Required sheet balsa includes 10 1 / 16 X 4 33/16 X 3 13/16 X 4 2 X 4 Foam cores available Soaring Research 19216 Calvert St Reseda CA casual aerobatics lively machine 19s 40s will save bundle both building operating costsBill Asked used two-wheel gear Bill answered read comment RcMs Dick Kidd numbered sequencewhich really real pilots fly tail-draggers ship takes off easily trike needed need standard 36-in long sheet balsa natural fuselage providing good nose tail moments 3/16 sides triangle stock corners results box construction can easily shaped nearly round cross sec tion streamlined fuselage use 3/16 sheet tail surfaces combines 91335 Cost $600 plus $200 postage California residents add 6% CA state tax now sequence.. 1 Read instructions several times tht thoroughly understand 2 Cut four pieces out sheet a 3 Glue pm strips leading trailing edges foam wing panels sure keep foam panels bending warping pinning strips Set assembly aside dry 4 Cut out fuselage parts top doublers sides formers etc 5 Lay fuselage top flat surface pin down 6 Run bead glue top inside edge fuselage sides pin fuselage top 7 Glue pin length ngle along top inside edge fuselage Push pins angle outside fuselage will make easy remove pins later 8 Glue pin two plywood mers firewall 9 Glue pin outside fuselage sides ngle bottom cor ners run between front edge fuselage former #1 former #2 rearward wing trailing edge tail fuselage 10 Glue pin bottom sheeting fuselage sure pins left re maining through fuselage bottom inside removed 11 Glue filler blocks engine compartment shown plans 12 Cut ten sheets 1/16 X 4 sheet length 25 Splice five sheets together using masking tape either Zap white glue Same five sheets allow dry 13 Trim sand leading trailing edges 1/16 sheeting will fit over nicely 14 Splice together 1/16 sheets have two sheets 1/16 X 20 X 25 Cut four pieces wing sheeting diagonal 10 9 15 Bond 1/16 sheeting wing cores contact cement use LightDex No matter what contact cement use test first piece scrap also have used 1/16 plywood skinning re quires no splicing stronger balsa 16 Remove fuselage assembly board 17 Cut out 1/8 spinner ring sand nose fuse square glue spinner ring 18 Trim sand wing panels airfoil shape 19 Cut two pieces t 25 long tapering 1 1 Trim sand pieces shape shown ailerons lightening holes 1 centers optional 20 Join wing panels 5-minute epoxy place k under wing tip dihedral Continued page 98 44 Model Aviation dural gear attaches plywood blocks sheet metal screws whole epoxied wing wire gear may substituted attaching gear inner sides plywood blocks engine fits neatly small compartment does detract streamlined appear ance yet readily accessible 19 produces adequate performance realistic flying open rear end ot tuselage provides stralgnt line pusnroo patn tne elevator norn tne centerline 50-in ship has flying weight 52 01wing loading 17 or/sq ft maling models again circle-towing down wind main pack fifth Bob tangled towlines another glider re-started found own lift again maxed other flier max flights Segle Senior Washing ton Isaacson thinks real comer fly-off Bob launched first circled four five times dropped model off line good lift again maxed Segle apparently didnt see Bob lift launched air less helpful contest over Tuesday noon Bill Vanderbeek put up four max flights Xenakis designed Tadpole mediocre fifth flight would put him first place A-l Towline Glider event lost model Fortunately brought along second model unfortunately never performed espe cially well test flights diverged badly towed going off right flight left next self-ap pointed four-man ad-hoc advisory com mittee agreed towhook should moved forward Y4-inch helped Bills fifth official flight lasted medi ocre 94 seconds just second too medi ocre win over Paul Stober least five Tadpoles flown A- 1 remarkable design has recently published form small three-views highly developed model has outstanding track record N ats/M euser continued page 39 used retrieve model fol lowing day used twice retrieve Pennyplane totally undamaged others used successfully also sur prising such simple effective de vice isnt used often Hot Rock/Evans continued page 44 21 Install strip aileron links ailerons cut out center-section blocks allow free movement links 22 Layout ood landing gear blocks rout out wing 5-minute epoxy gear blocks place 23 Cover wings ailerons 24 Cut out bend dural gear use screws attach gear plywood blocks 25 Install hinges make aileron torque rods fit aileron servo arms 26 Carve sand fuselage shape 27 The tail surfaces cut 3/16 sheet balsa Cut sand shape 28 Apply choice covering original covered red Solarfilm 29 Make radio engine tank instal lation shown plans hope have much satisfaction Hot Rock did prototype FF World Champs/Kaynes continued page 53 paid free-country entry Glider After five hours taken up rest glider fliers sorrow-drowning rubberband brigade everyone back routine going air field commencing flying 350 am time relieved find no rain rather less wind rather dark round 1 started USA drawn launch pole next USSR day giving us close view ap parent masters glider flying However soon after start Jim Walters proceeded give adept display towing moved across wind path circled downwind catapult launch first class air quite adequate 18 seconds short max Likewise both Charlie Markos Bob Sifleet little below magic three minutes total 24 recorded field 82 entries USSR Israel both full team scores what assumed would prove have difficult time day latter team included interest ing model flown Giora Herzberg well designed having slotted tailplane air foil among its features Russians continued manner round 2 Yugoslavs Austrians also treble maxes lat ter team notable having two mem bers equipped circle towing name ly Kraus 1976 European Champion Zach lucky contact gentle lift just before running out upwing tow ing space good tune gliders did go behind ridge causing some flights end line clocked off before landed 98 Model Aviation Designed expressly nel KJU witri plenty room iust about R/C up 4 channel miniature units Maintaining top quality simple construction inverted gull wing Balsa Plywood parts accurately die-cut Hardware Package including R/C Hardware full-size step-by-step Plans flat finish Decal sheet Major Gregory Pappy Boyingtons Lulubelle appeared after Oct 17 1943 raid Kahili Airfield Solomons Recommended engine sizes maximum performance 09 10 Minimal performance achieved stock 049 051 Tee Dee Diesel conversion suggested nrnduct review oroduct review Droduct review Axiflo Ducted Fans Designed expressly sport flier kits feature light-weight molded parts can assembled two evenings Intended use good stock engines fully throttable operate tank pressure Integral tail cone used tank First released 40 class engines followed 049 version injection molded A4D power Midwest Products Co Inc 400 South Indiana St Hobart IN 46342 product review product review product review
Edition: Model Aviation - 1977/11
Page Numbers: 42, 43, 44, 98
Edition: Model Aviation - 1977/11
Page Numbers: 42, 43, 44, 98
TIME WAS WHEN good sport model pattern model synonymous does have go back very far remember Taurus great Sunday flier well last word pattern year year 60-powered aircraft bred highly refined competition machine steady stream refinements making rather specialized expensive casual aerobatics Does acrobatic sport pilot need such ship answer would seem no es pecially since recent increases cost big engines fuel alone have made 19- 40-size airplane attractive Ever since powerful high-revving engines have market need continues racy looking simplified compact air craft manenverabiliy appropriate powerplants Hot Rock meets challenge head Its name incidentally derives gungho World War II fighter pilots flew no tomorrow two original Hot Rocks flown Taipan 21s produced near 40engine performance Others have pow ered K&B 40s well Supertigre 21s K&B 19s later producing adequate power realistic scale-like flying respect design approach first consideration wing airfoil provide full acrobatic capability full symmetrical airfoil chosen Next question wing area produce nice flat glide goal come out wing loading about 16 oz per sq ft 95-in root chord 8-in tip chord span 50 inches area came just 3 sq ft flying weight 52 oz wing loading 17 oz per sq ft just about perfect combination sweeping leading edge rearward tapering aikrons wider tip gives wing sweptback look Since machine designed aerobatics engine thrust line wing stabilizer incidence set zero Although initial design called tricycle landing gear phrase real pilots fly tail-draggers RCMs Dick Kidd influenced change two-wheel gear tail wheel Hot Rock test-flight procedure definitely departure convention per haps first involved simultaneous takeoff two previously unflown identical ships two prototypes identical almost respect including engines ra dios props spinners color trim evident difference ship bore number other number two Brice Roberts piloted number two flew number takeoff roll landing two-ship flight went off hitch characteristics two ships unbelievably identical After takeoff followed left 180 made pre-planned pass over runway As made trim pass Brice said trimmed full-down elevator fly ing holding bit down elevator just made same correction also flying bit down elevator Dur ing refueling next flight noticed carburetor barrel stop screw worked loose fallen out during first flight number two ship minus same screw both failed lock barrel stop screw After correcting elevator trim several ten-minute flights made ships went smoothly through pattern ma neuvers difficulty experienced formation flight ships being identical avoid either pilot flying wrong ship concentrated keeping eyes ship flying takeoff landing few moments some doubts ship responsible may elect build pair Hot Rocks duplicate first flight no doubt will choose build just Construction Assembly model straightfor ward rather bore now glue description have provided strength simplest construction main gear dural screwed mount epoxied wing core dural may replaced using con ventional hardwood gear blocks /s music wire use plywood gear door covers bolt covers music wire tail wheel hardware set up installed fuselage prior attaching stab rudder Required sheet balsa includes 10 1 / 16 X 4 33/16 X 3 13/16 X 4 2 X 4 Foam cores available Soaring Research 19216 Calvert St Reseda CA casual aerobatics lively machine 19s 40s will save bundle both building operating costsBill Asked used two-wheel gear Bill answered read comment RcMs Dick Kidd numbered sequencewhich really real pilots fly tail-draggers ship takes off easily trike needed need standard 36-in long sheet balsa natural fuselage providing good nose tail moments 3/16 sides triangle stock corners results box construction can easily shaped nearly round cross sec tion streamlined fuselage use 3/16 sheet tail surfaces combines 91335 Cost $600 plus $200 postage California residents add 6% CA state tax now sequence.. 1 Read instructions several times tht thoroughly understand 2 Cut four pieces out sheet a 3 Glue pm strips leading trailing edges foam wing panels sure keep foam panels bending warping pinning strips Set assembly aside dry 4 Cut out fuselage parts top doublers sides formers etc 5 Lay fuselage top flat surface pin down 6 Run bead glue top inside edge fuselage sides pin fuselage top 7 Glue pin length ngle along top inside edge fuselage Push pins angle outside fuselage will make easy remove pins later 8 Glue pin two plywood mers firewall 9 Glue pin outside fuselage sides ngle bottom cor ners run between front edge fuselage former #1 former #2 rearward wing trailing edge tail fuselage 10 Glue pin bottom sheeting fuselage sure pins left re maining through fuselage bottom inside removed 11 Glue filler blocks engine compartment shown plans 12 Cut ten sheets 1/16 X 4 sheet length 25 Splice five sheets together using masking tape either Zap white glue Same five sheets allow dry 13 Trim sand leading trailing edges 1/16 sheeting will fit over nicely 14 Splice together 1/16 sheets have two sheets 1/16 X 20 X 25 Cut four pieces wing sheeting diagonal 10 9 15 Bond 1/16 sheeting wing cores contact cement use LightDex No matter what contact cement use test first piece scrap also have used 1/16 plywood skinning re quires no splicing stronger balsa 16 Remove fuselage assembly board 17 Cut out 1/8 spinner ring sand nose fuse square glue spinner ring 18 Trim sand wing panels airfoil shape 19 Cut two pieces t 25 long tapering 1 1 Trim sand pieces shape shown ailerons lightening holes 1 centers optional 20 Join wing panels 5-minute epoxy place k under wing tip dihedral Continued page 98 44 Model Aviation dural gear attaches plywood blocks sheet metal screws whole epoxied wing wire gear may substituted attaching gear inner sides plywood blocks engine fits neatly small compartment does detract streamlined appear ance yet readily accessible 19 produces adequate performance realistic flying open rear end ot tuselage provides stralgnt line pusnroo patn tne elevator norn tne centerline 50-in ship has flying weight 52 01wing loading 17 or/sq ft maling models again circle-towing down wind main pack fifth Bob tangled towlines another glider re-started found own lift again maxed other flier max flights Segle Senior Washing ton Isaacson thinks real comer fly-off Bob launched first circled four five times dropped model off line good lift again maxed Segle apparently didnt see Bob lift launched air less helpful contest over Tuesday noon Bill Vanderbeek put up four max flights Xenakis designed Tadpole mediocre fifth flight would put him first place A-l Towline Glider event lost model Fortunately brought along second model unfortunately never performed espe cially well test flights diverged badly towed going off right flight left next self-ap pointed four-man ad-hoc advisory com mittee agreed towhook should moved forward Y4-inch helped Bills fifth official flight lasted medi ocre 94 seconds just second too medi ocre win over Paul Stober least five Tadpoles flown A- 1 remarkable design has recently published form small three-views highly developed model has outstanding track record N ats/M euser continued page 39 used retrieve model fol lowing day used twice retrieve Pennyplane totally undamaged others used successfully also sur prising such simple effective de vice isnt used often Hot Rock/Evans continued page 44 21 Install strip aileron links ailerons cut out center-section blocks allow free movement links 22 Layout ood landing gear blocks rout out wing 5-minute epoxy gear blocks place 23 Cover wings ailerons 24 Cut out bend dural gear use screws attach gear plywood blocks 25 Install hinges make aileron torque rods fit aileron servo arms 26 Carve sand fuselage shape 27 The tail surfaces cut 3/16 sheet balsa Cut sand shape 28 Apply choice covering original covered red Solarfilm 29 Make radio engine tank instal lation shown plans hope have much satisfaction Hot Rock did prototype FF World Champs/Kaynes continued page 53 paid free-country entry Glider After five hours taken up rest glider fliers sorrow-drowning rubberband brigade everyone back routine going air field commencing flying 350 am time relieved find no rain rather less wind rather dark round 1 started USA drawn launch pole next USSR day giving us close view ap parent masters glider flying However soon after start Jim Walters proceeded give adept display towing moved across wind path circled downwind catapult launch first class air quite adequate 18 seconds short max Likewise both Charlie Markos Bob Sifleet little below magic three minutes total 24 recorded field 82 entries USSR Israel both full team scores what assumed would prove have difficult time day latter team included interest ing model flown Giora Herzberg well designed having slotted tailplane air foil among its features Russians continued manner round 2 Yugoslavs Austrians also treble maxes lat ter team notable having two mem bers equipped circle towing name ly Kraus 1976 European Champion Zach lucky contact gentle lift just before running out upwing tow ing space good tune gliders did go behind ridge causing some flights end line clocked off before landed 98 Model Aviation Designed expressly nel KJU witri plenty room iust about R/C up 4 channel miniature units Maintaining top quality simple construction inverted gull wing Balsa Plywood parts accurately die-cut Hardware Package including R/C Hardware full-size step-by-step Plans flat finish Decal sheet Major Gregory Pappy Boyingtons Lulubelle appeared after Oct 17 1943 raid Kahili Airfield Solomons Recommended engine sizes maximum performance 09 10 Minimal performance achieved stock 049 051 Tee Dee Diesel conversion suggested nrnduct review oroduct review Droduct review Axiflo Ducted Fans Designed expressly sport flier kits feature light-weight molded parts can assembled two evenings Intended use good stock engines fully throttable operate tank pressure Integral tail cone used tank First released 40 class engines followed 049 version injection molded A4D power Midwest Products Co Inc 400 South Indiana St Hobart IN 46342 product review product review product review
Edition: Model Aviation - 1977/11
Page Numbers: 42, 43, 44, 98
TIME WAS WHEN good sport model pattern model synonymous does have go back very far remember Taurus great Sunday flier well last word pattern year year 60-powered aircraft bred highly refined competition machine steady stream refinements making rather specialized expensive casual aerobatics Does acrobatic sport pilot need such ship answer would seem no es pecially since recent increases cost big engines fuel alone have made 19- 40-size airplane attractive Ever since powerful high-revving engines have market need continues racy looking simplified compact air craft manenverabiliy appropriate powerplants Hot Rock meets challenge head Its name incidentally derives gungho World War II fighter pilots flew no tomorrow two original Hot Rocks flown Taipan 21s produced near 40engine performance Others have pow ered K&B 40s well Supertigre 21s K&B 19s later producing adequate power realistic scale-like flying respect design approach first consideration wing airfoil provide full acrobatic capability full symmetrical airfoil chosen Next question wing area produce nice flat glide goal come out wing loading about 16 oz per sq ft 95-in root chord 8-in tip chord span 50 inches area came just 3 sq ft flying weight 52 oz wing loading 17 oz per sq ft just about perfect combination sweeping leading edge rearward tapering aikrons wider tip gives wing sweptback look Since machine designed aerobatics engine thrust line wing stabilizer incidence set zero Although initial design called tricycle landing gear phrase real pilots fly tail-draggers RCMs Dick Kidd influenced change two-wheel gear tail wheel Hot Rock test-flight procedure definitely departure convention per haps first involved simultaneous takeoff two previously unflown identical ships two prototypes identical almost respect including engines ra dios props spinners color trim evident difference ship bore number other number two Brice Roberts piloted number two flew number takeoff roll landing two-ship flight went off hitch characteristics two ships unbelievably identical After takeoff followed left 180 made pre-planned pass over runway As made trim pass Brice said trimmed full-down elevator fly ing holding bit down elevator just made same correction also flying bit down elevator Dur ing refueling next flight noticed carburetor barrel stop screw worked loose fallen out during first flight number two ship minus same screw both failed lock barrel stop screw After correcting elevator trim several ten-minute flights made ships went smoothly through pattern ma neuvers difficulty experienced formation flight ships being identical avoid either pilot flying wrong ship concentrated keeping eyes ship flying takeoff landing few moments some doubts ship responsible may elect build pair Hot Rocks duplicate first flight no doubt will choose build just Construction Assembly model straightfor ward rather bore now glue description have provided strength simplest construction main gear dural screwed mount epoxied wing core dural may replaced using con ventional hardwood gear blocks /s music wire use plywood gear door covers bolt covers music wire tail wheel hardware set up installed fuselage prior attaching stab rudder Required sheet balsa includes 10 1 / 16 X 4 33/16 X 3 13/16 X 4 2 X 4 Foam cores available Soaring Research 19216 Calvert St Reseda CA casual aerobatics lively machine 19s 40s will save bundle both building operating costsBill Asked used two-wheel gear Bill answered read comment RcMs Dick Kidd numbered sequencewhich really real pilots fly tail-draggers ship takes off easily trike needed need standard 36-in long sheet balsa natural fuselage providing good nose tail moments 3/16 sides triangle stock corners results box construction can easily shaped nearly round cross sec tion streamlined fuselage use 3/16 sheet tail surfaces combines 91335 Cost $600 plus $200 postage California residents add 6% CA state tax now sequence.. 1 Read instructions several times tht thoroughly understand 2 Cut four pieces out sheet a 3 Glue pm strips leading trailing edges foam wing panels sure keep foam panels bending warping pinning strips Set assembly aside dry 4 Cut out fuselage parts top doublers sides formers etc 5 Lay fuselage top flat surface pin down 6 Run bead glue top inside edge fuselage sides pin fuselage top 7 Glue pin length ngle along top inside edge fuselage Push pins angle outside fuselage will make easy remove pins later 8 Glue pin two plywood mers firewall 9 Glue pin outside fuselage sides ngle bottom cor ners run between front edge fuselage former #1 former #2 rearward wing trailing edge tail fuselage 10 Glue pin bottom sheeting fuselage sure pins left re maining through fuselage bottom inside removed 11 Glue filler blocks engine compartment shown plans 12 Cut ten sheets 1/16 X 4 sheet length 25 Splice five sheets together using masking tape either Zap white glue Same five sheets allow dry 13 Trim sand leading trailing edges 1/16 sheeting will fit over nicely 14 Splice together 1/16 sheets have two sheets 1/16 X 20 X 25 Cut four pieces wing sheeting diagonal 10 9 15 Bond 1/16 sheeting wing cores contact cement use LightDex No matter what contact cement use test first piece scrap also have used 1/16 plywood skinning re quires no splicing stronger balsa 16 Remove fuselage assembly board 17 Cut out 1/8 spinner ring sand nose fuse square glue spinner ring 18 Trim sand wing panels airfoil shape 19 Cut two pieces t 25 long tapering 1 1 Trim sand pieces shape shown ailerons lightening holes 1 centers optional 20 Join wing panels 5-minute epoxy place k under wing tip dihedral Continued page 98 44 Model Aviation dural gear attaches plywood blocks sheet metal screws whole epoxied wing wire gear may substituted attaching gear inner sides plywood blocks engine fits neatly small compartment does detract streamlined appear ance yet readily accessible 19 produces adequate performance realistic flying open rear end ot tuselage provides stralgnt line pusnroo patn tne elevator norn tne centerline 50-in ship has flying weight 52 01wing loading 17 or/sq ft maling models again circle-towing down wind main pack fifth Bob tangled towlines another glider re-started found own lift again maxed other flier max flights Segle Senior Washing ton Isaacson thinks real comer fly-off Bob launched first circled four five times dropped model off line good lift again maxed Segle apparently didnt see Bob lift launched air less helpful contest over Tuesday noon Bill Vanderbeek put up four max flights Xenakis designed Tadpole mediocre fifth flight would put him first place A-l Towline Glider event lost model Fortunately brought along second model unfortunately never performed espe cially well test flights diverged badly towed going off right flight left next self-ap pointed four-man ad-hoc advisory com mittee agreed towhook should moved forward Y4-inch helped Bills fifth official flight lasted medi ocre 94 seconds just second too medi ocre win over Paul Stober least five Tadpoles flown A- 1 remarkable design has recently published form small three-views highly developed model has outstanding track record N ats/M euser continued page 39 used retrieve model fol lowing day used twice retrieve Pennyplane totally undamaged others used successfully also sur prising such simple effective de vice isnt used often Hot Rock/Evans continued page 44 21 Install strip aileron links ailerons cut out center-section blocks allow free movement links 22 Layout ood landing gear blocks rout out wing 5-minute epoxy gear blocks place 23 Cover wings ailerons 24 Cut out bend dural gear use screws attach gear plywood blocks 25 Install hinges make aileron torque rods fit aileron servo arms 26 Carve sand fuselage shape 27 The tail surfaces cut 3/16 sheet balsa Cut sand shape 28 Apply choice covering original covered red Solarfilm 29 Make radio engine tank instal lation shown plans hope have much satisfaction Hot Rock did prototype FF World Champs/Kaynes continued page 53 paid free-country entry Glider After five hours taken up rest glider fliers sorrow-drowning rubberband brigade everyone back routine going air field commencing flying 350 am time relieved find no rain rather less wind rather dark round 1 started USA drawn launch pole next USSR day giving us close view ap parent masters glider flying However soon after start Jim Walters proceeded give adept display towing moved across wind path circled downwind catapult launch first class air quite adequate 18 seconds short max Likewise both Charlie Markos Bob Sifleet little below magic three minutes total 24 recorded field 82 entries USSR Israel both full team scores what assumed would prove have difficult time day latter team included interest ing model flown Giora Herzberg well designed having slotted tailplane air foil among its features Russians continued manner round 2 Yugoslavs Austrians also treble maxes lat ter team notable having two mem bers equipped circle towing name ly Kraus 1976 European Champion Zach lucky contact gentle lift just before running out upwing tow ing space good tune gliders did go behind ridge causing some flights end line clocked off before landed 98 Model Aviation Designed expressly nel KJU witri plenty room iust about R/C up 4 channel miniature units Maintaining top quality simple construction inverted gull wing Balsa Plywood parts accurately die-cut Hardware Package including R/C Hardware full-size step-by-step Plans flat finish Decal sheet Major Gregory Pappy Boyingtons Lulubelle appeared after Oct 17 1943 raid Kahili Airfield Solomons Recommended engine sizes maximum performance 09 10 Minimal performance achieved stock 049 051 Tee Dee Diesel conversion suggested nrnduct review oroduct review Droduct review Axiflo Ducted Fans Designed expressly sport flier kits feature light-weight molded parts can assembled two evenings Intended use good stock engines fully throttable operate tank pressure Integral tail cone used tank First released 40 class engines followed 049 version injection molded A4D power Midwest Products Co Inc 400 South Indiana St Hobart IN 46342 product review product review product review
Edition: Model Aviation - 1977/11
Page Numbers: 42, 43, 44, 98
TIME WAS WHEN good sport model pattern model synonymous does have go back very far remember Taurus great Sunday flier well last word pattern year year 60-powered aircraft bred highly refined competition machine steady stream refinements making rather specialized expensive casual aerobatics Does acrobatic sport pilot need such ship answer would seem no es pecially since recent increases cost big engines fuel alone have made 19- 40-size airplane attractive Ever since powerful high-revving engines have market need continues racy looking simplified compact air craft manenverabiliy appropriate powerplants Hot Rock meets challenge head Its name incidentally derives gungho World War II fighter pilots flew no tomorrow two original Hot Rocks flown Taipan 21s produced near 40engine performance Others have pow ered K&B 40s well Supertigre 21s K&B 19s later producing adequate power realistic scale-like flying respect design approach first consideration wing airfoil provide full acrobatic capability full symmetrical airfoil chosen Next question wing area produce nice flat glide goal come out wing loading about 16 oz per sq ft 95-in root chord 8-in tip chord span 50 inches area came just 3 sq ft flying weight 52 oz wing loading 17 oz per sq ft just about perfect combination sweeping leading edge rearward tapering aikrons wider tip gives wing sweptback look Since machine designed aerobatics engine thrust line wing stabilizer incidence set zero Although initial design called tricycle landing gear phrase real pilots fly tail-draggers RCMs Dick Kidd influenced change two-wheel gear tail wheel Hot Rock test-flight procedure definitely departure convention per haps first involved simultaneous takeoff two previously unflown identical ships two prototypes identical almost respect including engines ra dios props spinners color trim evident difference ship bore number other number two Brice Roberts piloted number two flew number takeoff roll landing two-ship flight went off hitch characteristics two ships unbelievably identical After takeoff followed left 180 made pre-planned pass over runway As made trim pass Brice said trimmed full-down elevator fly ing holding bit down elevator just made same correction also flying bit down elevator Dur ing refueling next flight noticed carburetor barrel stop screw worked loose fallen out during first flight number two ship minus same screw both failed lock barrel stop screw After correcting elevator trim several ten-minute flights made ships went smoothly through pattern ma neuvers difficulty experienced formation flight ships being identical avoid either pilot flying wrong ship concentrated keeping eyes ship flying takeoff landing few moments some doubts ship responsible may elect build pair Hot Rocks duplicate first flight no doubt will choose build just Construction Assembly model straightfor ward rather bore now glue description have provided strength simplest construction main gear dural screwed mount epoxied wing core dural may replaced using con ventional hardwood gear blocks /s music wire use plywood gear door covers bolt covers music wire tail wheel hardware set up installed fuselage prior attaching stab rudder Required sheet balsa includes 10 1 / 16 X 4 33/16 X 3 13/16 X 4 2 X 4 Foam cores available Soaring Research 19216 Calvert St Reseda CA casual aerobatics lively machine 19s 40s will save bundle both building operating costsBill Asked used two-wheel gear Bill answered read comment RcMs Dick Kidd numbered sequencewhich really real pilots fly tail-draggers ship takes off easily trike needed need standard 36-in long sheet balsa natural fuselage providing good nose tail moments 3/16 sides triangle stock corners results box construction can easily shaped nearly round cross sec tion streamlined fuselage use 3/16 sheet tail surfaces combines 91335 Cost $600 plus $200 postage California residents add 6% CA state tax now sequence.. 1 Read instructions several times tht thoroughly understand 2 Cut four pieces out sheet a 3 Glue pm strips leading trailing edges foam wing panels sure keep foam panels bending warping pinning strips Set assembly aside dry 4 Cut out fuselage parts top doublers sides formers etc 5 Lay fuselage top flat surface pin down 6 Run bead glue top inside edge fuselage sides pin fuselage top 7 Glue pin length ngle along top inside edge fuselage Push pins angle outside fuselage will make easy remove pins later 8 Glue pin two plywood mers firewall 9 Glue pin outside fuselage sides ngle bottom cor ners run between front edge fuselage former #1 former #2 rearward wing trailing edge tail fuselage 10 Glue pin bottom sheeting fuselage sure pins left re maining through fuselage bottom inside removed 11 Glue filler blocks engine compartment shown plans 12 Cut ten sheets 1/16 X 4 sheet length 25 Splice five sheets together using masking tape either Zap white glue Same five sheets allow dry 13 Trim sand leading trailing edges 1/16 sheeting will fit over nicely 14 Splice together 1/16 sheets have two sheets 1/16 X 20 X 25 Cut four pieces wing sheeting diagonal 10 9 15 Bond 1/16 sheeting wing cores contact cement use LightDex No matter what contact cement use test first piece scrap also have used 1/16 plywood skinning re quires no splicing stronger balsa 16 Remove fuselage assembly board 17 Cut out 1/8 spinner ring sand nose fuse square glue spinner ring 18 Trim sand wing panels airfoil shape 19 Cut two pieces t 25 long tapering 1 1 Trim sand pieces shape shown ailerons lightening holes 1 centers optional 20 Join wing panels 5-minute epoxy place k under wing tip dihedral Continued page 98 44 Model Aviation dural gear attaches plywood blocks sheet metal screws whole epoxied wing wire gear may substituted attaching gear inner sides plywood blocks engine fits neatly small compartment does detract streamlined appear ance yet readily accessible 19 produces adequate performance realistic flying open rear end ot tuselage provides stralgnt line pusnroo patn tne elevator norn tne centerline 50-in ship has flying weight 52 01wing loading 17 or/sq ft maling models again circle-towing down wind main pack fifth Bob tangled towlines another glider re-started found own lift again maxed other flier max flights Segle Senior Washing ton Isaacson thinks real comer fly-off Bob launched first circled four five times dropped model off line good lift again maxed Segle apparently didnt see Bob lift launched air less helpful contest over Tuesday noon Bill Vanderbeek put up four max flights Xenakis designed Tadpole mediocre fifth flight would put him first place A-l Towline Glider event lost model Fortunately brought along second model unfortunately never performed espe cially well test flights diverged badly towed going off right flight left next self-ap pointed four-man ad-hoc advisory com mittee agreed towhook should moved forward Y4-inch helped Bills fifth official flight lasted medi ocre 94 seconds just second too medi ocre win over Paul Stober least five Tadpoles flown A- 1 remarkable design has recently published form small three-views highly developed model has outstanding track record N ats/M euser continued page 39 used retrieve model fol lowing day used twice retrieve Pennyplane totally undamaged others used successfully also sur prising such simple effective de vice isnt used often Hot Rock/Evans continued page 44 21 Install strip aileron links ailerons cut out center-section blocks allow free movement links 22 Layout ood landing gear blocks rout out wing 5-minute epoxy gear blocks place 23 Cover wings ailerons 24 Cut out bend dural gear use screws attach gear plywood blocks 25 Install hinges make aileron torque rods fit aileron servo arms 26 Carve sand fuselage shape 27 The tail surfaces cut 3/16 sheet balsa Cut sand shape 28 Apply choice covering original covered red Solarfilm 29 Make radio engine tank instal lation shown plans hope have much satisfaction Hot Rock did prototype FF World Champs/Kaynes continued page 53 paid free-country entry Glider After five hours taken up rest glider fliers sorrow-drowning rubberband brigade everyone back routine going air field commencing flying 350 am time relieved find no rain rather less wind rather dark round 1 started USA drawn launch pole next USSR day giving us close view ap parent masters glider flying However soon after start Jim Walters proceeded give adept display towing moved across wind path circled downwind catapult launch first class air quite adequate 18 seconds short max Likewise both Charlie Markos Bob Sifleet little below magic three minutes total 24 recorded field 82 entries USSR Israel both full team scores what assumed would prove have difficult time day latter team included interest ing model flown Giora Herzberg well designed having slotted tailplane air foil among its features Russians continued manner round 2 Yugoslavs Austrians also treble maxes lat ter team notable having two mem bers equipped circle towing name ly Kraus 1976 European Champion Zach lucky contact gentle lift just before running out upwing tow ing space good tune gliders did go behind ridge causing some flights end line clocked off before landed 98 Model Aviation Designed expressly nel KJU witri plenty room iust about R/C up 4 channel miniature units Maintaining top quality simple construction inverted gull wing Balsa Plywood parts accurately die-cut Hardware Package including R/C Hardware full-size step-by-step Plans flat finish Decal sheet Major Gregory Pappy Boyingtons Lulubelle appeared after Oct 17 1943 raid Kahili Airfield Solomons Recommended engine sizes maximum performance 09 10 Minimal performance achieved stock 049 051 Tee Dee Diesel conversion suggested nrnduct review oroduct review Droduct review Axiflo Ducted Fans Designed expressly sport flier kits feature light-weight molded parts can assembled two evenings Intended use good stock engines fully throttable operate tank pressure Integral tail cone used tank First released 40 class engines followed 049 version injection molded A4D power Midwest Products Co Inc 400 South Indiana St Hobart IN 46342 product review product review product review
