I Helicopters 0 Wall Schoonard JET RANGER External-Needle Valve Kavan Jet Ranger plans show external needle valve builders include Because en gine must shut down make ad justments can very trying experi ence very impractical hardest part properly locate hole fuselage side transmission box can worked out simple means measuring cross points Lay transmission work bench needle valve facing towards Using set dividers rule meas ure distance left end transmission base plate center needle valve Write measurement down Now using small square locate vertical centerline needle valve mark transmission base plate mark measure down needle-valve center mark measure ment down Now mount transmission helicopter secure tightly place Use small straightedge trans fer base plate measurement points out side fuselage points transfer measurements single crosspoint fuselage side mark Drill hole through fuselage trans mission box using V8 drill Make sure drill kept horizontal verti cally square Some needle valves have spring exten sion will have removed expose needle-valve wire Others will have outer portion needle valve bent 90 degrees should cut oflat bend Slide piece V8 brass tubing through fuselage transmission box over exposed needle valve determine far want extend outside cut tubing suit Place 1/s DuBro wheel collar outer end Replace set screw Allen cape screw make turn ing easier use reference point Solder collar place inner end should filed half two 3/16 inch another Ath wheel collar slipped over filed portion part slipped over needle valve tightened Any misalignment drilling will now apparent can corrected small file Once properly aligned remove exten sion enlarge hole fuselage accept large servo grommet will prevent extension vibrating remove engine transmission need loosen collar needle valve slide away needle think will very pleased arrangement Glowplug Connectors friction wire kit provides lighting glow plug poor arrangement say least does make poor con nection removal replacement glow plug can distort head threads really spoil day better method remove wire completely drill top heat-sink tap 4X40 Screw bright 4X40 screw heatsink leaving head screw about inch above heat-sink Make sure screw tightened pack nut starting jack use clear multistrand lamp cord remaining end solder small alligator clamps Attach glow plug heatsink ground remove glow plug simply remove clamp nothing way remove transmission remove both clamps will find will July1977 25 Left One Skyranger mods discussed month bolting lending gear tuselage Night Adding considerably pleasure operating aircraft auxiliary fuel tankseen through windowand external needle valve outlet seen below Seen Toledo LeftImpressive Cobra Gunship handiwork Walter Farrell RightPert Hughes UU dlsplayeO uavid wanger Upholstered seats eye-catcher Beautiful trophies awarded Weak Signals club event winners Toledo pix Condon [Au I/C IrnI BOX 511E HIGGINSVILLE MISSOURI 64037 fixed neutralthe tab becomes af fect another elevator hope makes sense wish much success have anyone decides build Chip munk Whether go AMA Scale Stand-Off youll pleased its flying characteristics can en joy relaxed pace slower flyingscale machine RC Scale/Atkinson continued page 24 time greats 30s 40s An easy new construction method used build ing new kits Stinson SR-6 Reliant straight-wing also works subject old-timers 30s 40s Im sure have seen ads radial cowling available World Engines received Its fine piece work rocker arm covers excellently done Diameter 5 inches works well 40-size scale model cowl intended Worlds Mr Mul ligan scale kit may used radial-engine classic scale birds Also biplanes such Jungmeister publications concerning all-time great aircraft heard published Arco Publishing Co 219 Park Ave South New York NY 10003 specialize WW-II aircraft deHavilland Mosquito written Mr Hardy England great interest complete history Mossie versatile aircraft WW-II con structed entirely wood unusual WW-II since service aircraft constructed metal Mosquito also used 8th Air Force England listing some coming con tests Kansas City Radio Control Assn Scale Pattern will held June 11-12 have excellent 600-ft runway Scale Sigs contest although strictly Scale will held June 18-19 case dont belong Biplane Assn biplanes necessarily have Stand-Off Scale points awarded bi plane resembles full-size ship Also new event has added Biplane Assn meet monoplanes will compete strictly against other monoplanes must copied full-size acrobatic aircraft such Chipmunk Zlin World War II fighter planes such P-SI Me-109 Zero actually acrobatic aircraft scale contest notice Bob Strobel 12000 Tecumseh Redford MI 48239 phone 313-937-8678 Date June 26 Three events will held WW-I WW-II non-military Sponsored Mid west R/CSocietyThats off Toledo Bud Atkinson 734 North 6th Street Terrace Blue Springs MO 64015 R C Helicopters/Schoonard continued page 25 come off flight will make better starting because better connections Fuel Tank Auxiliary Feed Jet Ranger plans show fuel tank crosswise fuselage fine except tight left-hand turns fuel can run away pickup suddenly engine goes dead disastrous results flying buddy Norm Holland worked out very good auxiliary tank arrangement uses regular 16- 18-ounce tank standard location 2-ounce slant py lon tank silicone glued transmission box left side Note picture plumbing sounds complicated isnt follow directions tank needs pickup tube overflow tube Run line muffler-pressure tap overflow tube large tank large tank-pickup tube should con nected overflow tube small tank Make sure overflow tube small tank bent will go up upper corner tank will fill completely pickup tube small tank should go filter engine fill line engine should broken before filter small tank fills first over flow fills large tank vents muffler can fill breaking line run through Robart Fueler highly recom mend Robart Fueler prevents engine flooding fueling also permits turning engine over no fuel going just turning switch auxiliary fuel tank virtu ally impossible get helicopter position will starve fuel plus added safety 2 ounces fuel capacity sure safety secure plumbing connections sliding /8 sleeve fuel tubing over plumbing tubing joint Landing Gear Attachment Probably unsightly impractical thing Jet Ranger landing-gear shocks impractical fact hard landing unbelievable pressure exerted joint attach fuselage cross struts have seen shocks driven right through bottom fuselage plus breaking landing struts just hard landing better way attach landing gear bolt directly fuselage way least 5 inches landing strut contact fuselage looks far better too Fuselage Cabin Top last months col umn left out important parts attaching #9 servo tray What left out center mounting o tray mounted front rear lift pressure point exerted just front aluminum-bearing box use 6 X e /8 plywood goes under #9 extends under #9A side secured side #9 4X40 screw goes through #9 blind nut cross support servo tray needs removed support can slid out through rear windows product review product review product review Tail Rotor Delta Hinge rigid hub 88 Model Aviation SERVING THE R/Cer SINCE 1953 Since weve business 24 years can sure stay offer service customers years come youre interested what have offer send $1 complete catalog Add $50 1st Class mail return oroduct review product review product review Ducted Fan Designed ob Kress ot Grumman Aerospace unit light strong efficient qualities allow used good stock engines Racing engines essential tailcone fuel tank Pressure required Engine can throt tled Unit comes four sizes 049 20 40 60 Midwest Products Co 400 S Indi ana St Hobart IN 46342 holds tail-rotor blades lack individual adjustments tail-rotor blades makes almost impossible per fectly track tail-rotor blades causes vibration Also rigidity tail-rotor disc causes tail bounce around gusty winds have spent great deal time studying Delta Hinge Proto-type Jet Ranger have felt long time could adapted models Several hubs worked up hand tried models Sever al things immediately became apparent Perfect blade tracking instantly auto matic Vibration tracking dis appeared yawing action gusty wind greatly reduced What ac tually takes place instead wind gust moving tail moved tail-rotor disc automatically added pitch opposite blade instantly brought disc back normal 90 de grees tail-rotor shaft Because precision hub must hinged practically impos sible average modeler build hub has made available Miniature Aircraft Supply 2563 Diversi fied Way Orlando FL 32807 Next months column will cover rigid mounting swashplate smoother cyclic control head modifications super smooth flying can get permis sion developer Dont get Helicopter Nationals June 10 11 12 South Bend Indiana youre flying youre trying hard enough Walt Schoonard 2080 Sharon Rd Winter Park FL 32789 CL Navy Carrier/Perry continued page 34 bellcrank close balance point necessary friction lock can made bending aft part track slide will bind track aft part its travel Engines K&B some good news some bad news First bad news looking plain-bearing version new K&B 58cc 35 Schnuerle ABC will have wait K&B produced plain-bearing 35 Series 75 engine based Series 71 ball bearing 40 still have 4000 stock after Slow Combat rules allowed use ball-bearing engines Rather get stuck again going wait before considering plain-bearing engine again Next year possible will no eventsincluding Profile Carrierwhich require plain bearing engines case plain bearing 58cc engine unlikely Now good news some time now have no good engines use twin-engine Carrier ship 15s little small Class 19s werent really competitive 29s too few too expensive Class II Check out new K&B ads will see quite variety ABC Schnuerle engines 325cc 19 would make good pair Class 35cc 21 could substituted make Class II twin Two 49cc 29 engines should make highly competitive Class II Dont forget five bonus points additional engine Carrier Newsletter Ted Kraver has written about starting Carrier newsletter Quite few people have brought up subject Ted first actually willing something has putting together sample plans send Carrier fliers interested such publication Plans eight pages printed monthly Annual subscription rate would $500 100 people subscribe less people subscribe some advertising interest shown Ted paying first printing interested receiving copy participating project helping expenses contributing contact Ted 1212 E Manhatton Dr Tempe AZ 85282 call him 602 838-1717 Top 15 Ive trying past year analyze Navy Carrier competition determine interest performance dif ferent areas country has formidable task because faulty reporting CDs Almost third contest reports omissions scores number age category contes tants because reproduction methods form layout impossible identify specific contest al though names usually allowed get some idea area thing able set up list top 15 scores 1976 season realize may two omissions because Job Opportunities Wind Tunnel model Demignerm und model mukerm Immediate openings growing company Designers Engineers Engr Aides Draftpersons N/C Programmers Model Makers Wind Tunnel Personnel offer pleasant working conditions excellent fringe benefits have unique opportunities experienced personnel wind tunnel model backgrounds get ground floor company move Grow us grow family Uve work play Virginias inviting areas close great beaches good schools churches Send resume confidence 11844 Jefferson Avenue Newport News VA 23606 call President Thomas H Strom collect 804 874-33 DYNAMIC ENGINEERING INCORPORATED An equal opportunity employer M/F July1977 89 product review product review product review SCALE DRAWINGS/I * --OxBAT 31 MORRISONIS? CATALOG 25$ EPLA-TECH 48500 MC KENZIE HWY InteaaPIoiiaI VIDA OREGON 97488 Webra 15 18 Engines Lovers really big RC models will delighted avail ability new big Webra An impression its size given photo brute posed also-new Webra 15 Both imported MRC 2500 Woodbridge Ave Edison NJ 08817 product review product review product review IIPEANUT SCALE II PLANS ACCESSORIES complete catalog SOt 0 BOX 2498-AM MESA CAUF 92041
Edition: Model Aviation - 1977/07
Page Numbers: 25, 88, 89
I Helicopters 0 Wall Schoonard JET RANGER External-Needle Valve Kavan Jet Ranger plans show external needle valve builders include Because en gine must shut down make ad justments can very trying experi ence very impractical hardest part properly locate hole fuselage side transmission box can worked out simple means measuring cross points Lay transmission work bench needle valve facing towards Using set dividers rule meas ure distance left end transmission base plate center needle valve Write measurement down Now using small square locate vertical centerline needle valve mark transmission base plate mark measure down needle-valve center mark measure ment down Now mount transmission helicopter secure tightly place Use small straightedge trans fer base plate measurement points out side fuselage points transfer measurements single crosspoint fuselage side mark Drill hole through fuselage trans mission box using V8 drill Make sure drill kept horizontal verti cally square Some needle valves have spring exten sion will have removed expose needle-valve wire Others will have outer portion needle valve bent 90 degrees should cut oflat bend Slide piece V8 brass tubing through fuselage transmission box over exposed needle valve determine far want extend outside cut tubing suit Place 1/s DuBro wheel collar outer end Replace set screw Allen cape screw make turn ing easier use reference point Solder collar place inner end should filed half two 3/16 inch another Ath wheel collar slipped over filed portion part slipped over needle valve tightened Any misalignment drilling will now apparent can corrected small file Once properly aligned remove exten sion enlarge hole fuselage accept large servo grommet will prevent extension vibrating remove engine transmission need loosen collar needle valve slide away needle think will very pleased arrangement Glowplug Connectors friction wire kit provides lighting glow plug poor arrangement say least does make poor con nection removal replacement glow plug can distort head threads really spoil day better method remove wire completely drill top heat-sink tap 4X40 Screw bright 4X40 screw heatsink leaving head screw about inch above heat-sink Make sure screw tightened pack nut starting jack use clear multistrand lamp cord remaining end solder small alligator clamps Attach glow plug heatsink ground remove glow plug simply remove clamp nothing way remove transmission remove both clamps will find will July1977 25 Left One Skyranger mods discussed month bolting lending gear tuselage Night Adding considerably pleasure operating aircraft auxiliary fuel tankseen through windowand external needle valve outlet seen below Seen Toledo LeftImpressive Cobra Gunship handiwork Walter Farrell RightPert Hughes UU dlsplayeO uavid wanger Upholstered seats eye-catcher Beautiful trophies awarded Weak Signals club event winners Toledo pix Condon [Au I/C IrnI BOX 511E HIGGINSVILLE MISSOURI 64037 fixed neutralthe tab becomes af fect another elevator hope makes sense wish much success have anyone decides build Chip munk Whether go AMA Scale Stand-Off youll pleased its flying characteristics can en joy relaxed pace slower flyingscale machine RC Scale/Atkinson continued page 24 time greats 30s 40s An easy new construction method used build ing new kits Stinson SR-6 Reliant straight-wing also works subject old-timers 30s 40s Im sure have seen ads radial cowling available World Engines received Its fine piece work rocker arm covers excellently done Diameter 5 inches works well 40-size scale model cowl intended Worlds Mr Mul ligan scale kit may used radial-engine classic scale birds Also biplanes such Jungmeister publications concerning all-time great aircraft heard published Arco Publishing Co 219 Park Ave South New York NY 10003 specialize WW-II aircraft deHavilland Mosquito written Mr Hardy England great interest complete history Mossie versatile aircraft WW-II con structed entirely wood unusual WW-II since service aircraft constructed metal Mosquito also used 8th Air Force England listing some coming con tests Kansas City Radio Control Assn Scale Pattern will held June 11-12 have excellent 600-ft runway Scale Sigs contest although strictly Scale will held June 18-19 case dont belong Biplane Assn biplanes necessarily have Stand-Off Scale points awarded bi plane resembles full-size ship Also new event has added Biplane Assn meet monoplanes will compete strictly against other monoplanes must copied full-size acrobatic aircraft such Chipmunk Zlin World War II fighter planes such P-SI Me-109 Zero actually acrobatic aircraft scale contest notice Bob Strobel 12000 Tecumseh Redford MI 48239 phone 313-937-8678 Date June 26 Three events will held WW-I WW-II non-military Sponsored Mid west R/CSocietyThats off Toledo Bud Atkinson 734 North 6th Street Terrace Blue Springs MO 64015 R C Helicopters/Schoonard continued page 25 come off flight will make better starting because better connections Fuel Tank Auxiliary Feed Jet Ranger plans show fuel tank crosswise fuselage fine except tight left-hand turns fuel can run away pickup suddenly engine goes dead disastrous results flying buddy Norm Holland worked out very good auxiliary tank arrangement uses regular 16- 18-ounce tank standard location 2-ounce slant py lon tank silicone glued transmission box left side Note picture plumbing sounds complicated isnt follow directions tank needs pickup tube overflow tube Run line muffler-pressure tap overflow tube large tank large tank-pickup tube should con nected overflow tube small tank Make sure overflow tube small tank bent will go up upper corner tank will fill completely pickup tube small tank should go filter engine fill line engine should broken before filter small tank fills first over flow fills large tank vents muffler can fill breaking line run through Robart Fueler highly recom mend Robart Fueler prevents engine flooding fueling also permits turning engine over no fuel going just turning switch auxiliary fuel tank virtu ally impossible get helicopter position will starve fuel plus added safety 2 ounces fuel capacity sure safety secure plumbing connections sliding /8 sleeve fuel tubing over plumbing tubing joint Landing Gear Attachment Probably unsightly impractical thing Jet Ranger landing-gear shocks impractical fact hard landing unbelievable pressure exerted joint attach fuselage cross struts have seen shocks driven right through bottom fuselage plus breaking landing struts just hard landing better way attach landing gear bolt directly fuselage way least 5 inches landing strut contact fuselage looks far better too Fuselage Cabin Top last months col umn left out important parts attaching #9 servo tray What left out center mounting o tray mounted front rear lift pressure point exerted just front aluminum-bearing box use 6 X e /8 plywood goes under #9 extends under #9A side secured side #9 4X40 screw goes through #9 blind nut cross support servo tray needs removed support can slid out through rear windows product review product review product review Tail Rotor Delta Hinge rigid hub 88 Model Aviation SERVING THE R/Cer SINCE 1953 Since weve business 24 years can sure stay offer service customers years come youre interested what have offer send $1 complete catalog Add $50 1st Class mail return oroduct review product review product review Ducted Fan Designed ob Kress ot Grumman Aerospace unit light strong efficient qualities allow used good stock engines Racing engines essential tailcone fuel tank Pressure required Engine can throt tled Unit comes four sizes 049 20 40 60 Midwest Products Co 400 S Indi ana St Hobart IN 46342 holds tail-rotor blades lack individual adjustments tail-rotor blades makes almost impossible per fectly track tail-rotor blades causes vibration Also rigidity tail-rotor disc causes tail bounce around gusty winds have spent great deal time studying Delta Hinge Proto-type Jet Ranger have felt long time could adapted models Several hubs worked up hand tried models Sever al things immediately became apparent Perfect blade tracking instantly auto matic Vibration tracking dis appeared yawing action gusty wind greatly reduced What ac tually takes place instead wind gust moving tail moved tail-rotor disc automatically added pitch opposite blade instantly brought disc back normal 90 de grees tail-rotor shaft Because precision hub must hinged practically impos sible average modeler build hub has made available Miniature Aircraft Supply 2563 Diversi fied Way Orlando FL 32807 Next months column will cover rigid mounting swashplate smoother cyclic control head modifications super smooth flying can get permis sion developer Dont get Helicopter Nationals June 10 11 12 South Bend Indiana youre flying youre trying hard enough Walt Schoonard 2080 Sharon Rd Winter Park FL 32789 CL Navy Carrier/Perry continued page 34 bellcrank close balance point necessary friction lock can made bending aft part track slide will bind track aft part its travel Engines K&B some good news some bad news First bad news looking plain-bearing version new K&B 58cc 35 Schnuerle ABC will have wait K&B produced plain-bearing 35 Series 75 engine based Series 71 ball bearing 40 still have 4000 stock after Slow Combat rules allowed use ball-bearing engines Rather get stuck again going wait before considering plain-bearing engine again Next year possible will no eventsincluding Profile Carrierwhich require plain bearing engines case plain bearing 58cc engine unlikely Now good news some time now have no good engines use twin-engine Carrier ship 15s little small Class 19s werent really competitive 29s too few too expensive Class II Check out new K&B ads will see quite variety ABC Schnuerle engines 325cc 19 would make good pair Class 35cc 21 could substituted make Class II twin Two 49cc 29 engines should make highly competitive Class II Dont forget five bonus points additional engine Carrier Newsletter Ted Kraver has written about starting Carrier newsletter Quite few people have brought up subject Ted first actually willing something has putting together sample plans send Carrier fliers interested such publication Plans eight pages printed monthly Annual subscription rate would $500 100 people subscribe less people subscribe some advertising interest shown Ted paying first printing interested receiving copy participating project helping expenses contributing contact Ted 1212 E Manhatton Dr Tempe AZ 85282 call him 602 838-1717 Top 15 Ive trying past year analyze Navy Carrier competition determine interest performance dif ferent areas country has formidable task because faulty reporting CDs Almost third contest reports omissions scores number age category contes tants because reproduction methods form layout impossible identify specific contest al though names usually allowed get some idea area thing able set up list top 15 scores 1976 season realize may two omissions because Job Opportunities Wind Tunnel model Demignerm und model mukerm Immediate openings growing company Designers Engineers Engr Aides Draftpersons N/C Programmers Model Makers Wind Tunnel Personnel offer pleasant working conditions excellent fringe benefits have unique opportunities experienced personnel wind tunnel model backgrounds get ground floor company move Grow us grow family Uve work play Virginias inviting areas close great beaches good schools churches Send resume confidence 11844 Jefferson Avenue Newport News VA 23606 call President Thomas H Strom collect 804 874-33 DYNAMIC ENGINEERING INCORPORATED An equal opportunity employer M/F July1977 89 product review product review product review SCALE DRAWINGS/I * --OxBAT 31 MORRISONIS? CATALOG 25$ EPLA-TECH 48500 MC KENZIE HWY InteaaPIoiiaI VIDA OREGON 97488 Webra 15 18 Engines Lovers really big RC models will delighted avail ability new big Webra An impression its size given photo brute posed also-new Webra 15 Both imported MRC 2500 Woodbridge Ave Edison NJ 08817 product review product review product review IIPEANUT SCALE II PLANS ACCESSORIES complete catalog SOt 0 BOX 2498-AM MESA CAUF 92041
Edition: Model Aviation - 1977/07
Page Numbers: 25, 88, 89
I Helicopters 0 Wall Schoonard JET RANGER External-Needle Valve Kavan Jet Ranger plans show external needle valve builders include Because en gine must shut down make ad justments can very trying experi ence very impractical hardest part properly locate hole fuselage side transmission box can worked out simple means measuring cross points Lay transmission work bench needle valve facing towards Using set dividers rule meas ure distance left end transmission base plate center needle valve Write measurement down Now using small square locate vertical centerline needle valve mark transmission base plate mark measure down needle-valve center mark measure ment down Now mount transmission helicopter secure tightly place Use small straightedge trans fer base plate measurement points out side fuselage points transfer measurements single crosspoint fuselage side mark Drill hole through fuselage trans mission box using V8 drill Make sure drill kept horizontal verti cally square Some needle valves have spring exten sion will have removed expose needle-valve wire Others will have outer portion needle valve bent 90 degrees should cut oflat bend Slide piece V8 brass tubing through fuselage transmission box over exposed needle valve determine far want extend outside cut tubing suit Place 1/s DuBro wheel collar outer end Replace set screw Allen cape screw make turn ing easier use reference point Solder collar place inner end should filed half two 3/16 inch another Ath wheel collar slipped over filed portion part slipped over needle valve tightened Any misalignment drilling will now apparent can corrected small file Once properly aligned remove exten sion enlarge hole fuselage accept large servo grommet will prevent extension vibrating remove engine transmission need loosen collar needle valve slide away needle think will very pleased arrangement Glowplug Connectors friction wire kit provides lighting glow plug poor arrangement say least does make poor con nection removal replacement glow plug can distort head threads really spoil day better method remove wire completely drill top heat-sink tap 4X40 Screw bright 4X40 screw heatsink leaving head screw about inch above heat-sink Make sure screw tightened pack nut starting jack use clear multistrand lamp cord remaining end solder small alligator clamps Attach glow plug heatsink ground remove glow plug simply remove clamp nothing way remove transmission remove both clamps will find will July1977 25 Left One Skyranger mods discussed month bolting lending gear tuselage Night Adding considerably pleasure operating aircraft auxiliary fuel tankseen through windowand external needle valve outlet seen below Seen Toledo LeftImpressive Cobra Gunship handiwork Walter Farrell RightPert Hughes UU dlsplayeO uavid wanger Upholstered seats eye-catcher Beautiful trophies awarded Weak Signals club event winners Toledo pix Condon [Au I/C IrnI BOX 511E HIGGINSVILLE MISSOURI 64037 fixed neutralthe tab becomes af fect another elevator hope makes sense wish much success have anyone decides build Chip munk Whether go AMA Scale Stand-Off youll pleased its flying characteristics can en joy relaxed pace slower flyingscale machine RC Scale/Atkinson continued page 24 time greats 30s 40s An easy new construction method used build ing new kits Stinson SR-6 Reliant straight-wing also works subject old-timers 30s 40s Im sure have seen ads radial cowling available World Engines received Its fine piece work rocker arm covers excellently done Diameter 5 inches works well 40-size scale model cowl intended Worlds Mr Mul ligan scale kit may used radial-engine classic scale birds Also biplanes such Jungmeister publications concerning all-time great aircraft heard published Arco Publishing Co 219 Park Ave South New York NY 10003 specialize WW-II aircraft deHavilland Mosquito written Mr Hardy England great interest complete history Mossie versatile aircraft WW-II con structed entirely wood unusual WW-II since service aircraft constructed metal Mosquito also used 8th Air Force England listing some coming con tests Kansas City Radio Control Assn Scale Pattern will held June 11-12 have excellent 600-ft runway Scale Sigs contest although strictly Scale will held June 18-19 case dont belong Biplane Assn biplanes necessarily have Stand-Off Scale points awarded bi plane resembles full-size ship Also new event has added Biplane Assn meet monoplanes will compete strictly against other monoplanes must copied full-size acrobatic aircraft such Chipmunk Zlin World War II fighter planes such P-SI Me-109 Zero actually acrobatic aircraft scale contest notice Bob Strobel 12000 Tecumseh Redford MI 48239 phone 313-937-8678 Date June 26 Three events will held WW-I WW-II non-military Sponsored Mid west R/CSocietyThats off Toledo Bud Atkinson 734 North 6th Street Terrace Blue Springs MO 64015 R C Helicopters/Schoonard continued page 25 come off flight will make better starting because better connections Fuel Tank Auxiliary Feed Jet Ranger plans show fuel tank crosswise fuselage fine except tight left-hand turns fuel can run away pickup suddenly engine goes dead disastrous results flying buddy Norm Holland worked out very good auxiliary tank arrangement uses regular 16- 18-ounce tank standard location 2-ounce slant py lon tank silicone glued transmission box left side Note picture plumbing sounds complicated isnt follow directions tank needs pickup tube overflow tube Run line muffler-pressure tap overflow tube large tank large tank-pickup tube should con nected overflow tube small tank Make sure overflow tube small tank bent will go up upper corner tank will fill completely pickup tube small tank should go filter engine fill line engine should broken before filter small tank fills first over flow fills large tank vents muffler can fill breaking line run through Robart Fueler highly recom mend Robart Fueler prevents engine flooding fueling also permits turning engine over no fuel going just turning switch auxiliary fuel tank virtu ally impossible get helicopter position will starve fuel plus added safety 2 ounces fuel capacity sure safety secure plumbing connections sliding /8 sleeve fuel tubing over plumbing tubing joint Landing Gear Attachment Probably unsightly impractical thing Jet Ranger landing-gear shocks impractical fact hard landing unbelievable pressure exerted joint attach fuselage cross struts have seen shocks driven right through bottom fuselage plus breaking landing struts just hard landing better way attach landing gear bolt directly fuselage way least 5 inches landing strut contact fuselage looks far better too Fuselage Cabin Top last months col umn left out important parts attaching #9 servo tray What left out center mounting o tray mounted front rear lift pressure point exerted just front aluminum-bearing box use 6 X e /8 plywood goes under #9 extends under #9A side secured side #9 4X40 screw goes through #9 blind nut cross support servo tray needs removed support can slid out through rear windows product review product review product review Tail Rotor Delta Hinge rigid hub 88 Model Aviation SERVING THE R/Cer SINCE 1953 Since weve business 24 years can sure stay offer service customers years come youre interested what have offer send $1 complete catalog Add $50 1st Class mail return oroduct review product review product review Ducted Fan Designed ob Kress ot Grumman Aerospace unit light strong efficient qualities allow used good stock engines Racing engines essential tailcone fuel tank Pressure required Engine can throt tled Unit comes four sizes 049 20 40 60 Midwest Products Co 400 S Indi ana St Hobart IN 46342 holds tail-rotor blades lack individual adjustments tail-rotor blades makes almost impossible per fectly track tail-rotor blades causes vibration Also rigidity tail-rotor disc causes tail bounce around gusty winds have spent great deal time studying Delta Hinge Proto-type Jet Ranger have felt long time could adapted models Several hubs worked up hand tried models Sever al things immediately became apparent Perfect blade tracking instantly auto matic Vibration tracking dis appeared yawing action gusty wind greatly reduced What ac tually takes place instead wind gust moving tail moved tail-rotor disc automatically added pitch opposite blade instantly brought disc back normal 90 de grees tail-rotor shaft Because precision hub must hinged practically impos sible average modeler build hub has made available Miniature Aircraft Supply 2563 Diversi fied Way Orlando FL 32807 Next months column will cover rigid mounting swashplate smoother cyclic control head modifications super smooth flying can get permis sion developer Dont get Helicopter Nationals June 10 11 12 South Bend Indiana youre flying youre trying hard enough Walt Schoonard 2080 Sharon Rd Winter Park FL 32789 CL Navy Carrier/Perry continued page 34 bellcrank close balance point necessary friction lock can made bending aft part track slide will bind track aft part its travel Engines K&B some good news some bad news First bad news looking plain-bearing version new K&B 58cc 35 Schnuerle ABC will have wait K&B produced plain-bearing 35 Series 75 engine based Series 71 ball bearing 40 still have 4000 stock after Slow Combat rules allowed use ball-bearing engines Rather get stuck again going wait before considering plain-bearing engine again Next year possible will no eventsincluding Profile Carrierwhich require plain bearing engines case plain bearing 58cc engine unlikely Now good news some time now have no good engines use twin-engine Carrier ship 15s little small Class 19s werent really competitive 29s too few too expensive Class II Check out new K&B ads will see quite variety ABC Schnuerle engines 325cc 19 would make good pair Class 35cc 21 could substituted make Class II twin Two 49cc 29 engines should make highly competitive Class II Dont forget five bonus points additional engine Carrier Newsletter Ted Kraver has written about starting Carrier newsletter Quite few people have brought up subject Ted first actually willing something has putting together sample plans send Carrier fliers interested such publication Plans eight pages printed monthly Annual subscription rate would $500 100 people subscribe less people subscribe some advertising interest shown Ted paying first printing interested receiving copy participating project helping expenses contributing contact Ted 1212 E Manhatton Dr Tempe AZ 85282 call him 602 838-1717 Top 15 Ive trying past year analyze Navy Carrier competition determine interest performance dif ferent areas country has formidable task because faulty reporting CDs Almost third contest reports omissions scores number age category contes tants because reproduction methods form layout impossible identify specific contest al though names usually allowed get some idea area thing able set up list top 15 scores 1976 season realize may two omissions because Job Opportunities Wind Tunnel model Demignerm und model mukerm Immediate openings growing company Designers Engineers Engr Aides Draftpersons N/C Programmers Model Makers Wind Tunnel Personnel offer pleasant working conditions excellent fringe benefits have unique opportunities experienced personnel wind tunnel model backgrounds get ground floor company move Grow us grow family Uve work play Virginias inviting areas close great beaches good schools churches Send resume confidence 11844 Jefferson Avenue Newport News VA 23606 call President Thomas H Strom collect 804 874-33 DYNAMIC ENGINEERING INCORPORATED An equal opportunity employer M/F July1977 89 product review product review product review SCALE DRAWINGS/I * --OxBAT 31 MORRISONIS? CATALOG 25$ EPLA-TECH 48500 MC KENZIE HWY InteaaPIoiiaI VIDA OREGON 97488 Webra 15 18 Engines Lovers really big RC models will delighted avail ability new big Webra An impression its size given photo brute posed also-new Webra 15 Both imported MRC 2500 Woodbridge Ave Edison NJ 08817 product review product review product review IIPEANUT SCALE II PLANS ACCESSORIES complete catalog SOt 0 BOX 2498-AM MESA CAUF 92041