Control Line COMBAT Charlie Johnson USUALLY last thing said Combat construction articles install fuel system test fly model Enough people have trouble get ting simple suction tanks work much less pressure tank bladder/pacifier system Paci fiers have around long time maybe 25 years lot people give Riley Wooten credit development work least popularizing Pen bladders can included same group have lost popularity because theyve become scarce ones still available have deteriorated Actually pacifiers getting hard findat least form usuable Combat filled jellies moulded around plastic ring Ive heard people buying substitutes scientific stores theyre used another application Sur gical tubing has pretty much taken over once pen bladder ruled Its cheaper lasts longer available sizes term bladder nowadays taken include surgical-tubing tanks have choice fuel systems should quickly eliminate metal tanks because weigh never really work well bladder/pacifier system choice between bladder pacifier sometimes dictated design model pacifier needs large roundish compartment requires bulge airframe bladder rides inside tube some sort can hidden within wing entirely pacifier concentrates weight fuel closer center model whereas bladder tube generally runs outboard eives effect outboard weiahr type compartment considered design model shouldnt much difference handling caused bladder drag caused bulge pacifier compartment used common practice put paci fier compartment highest point wing order minimize bulge looked better too weakened leading edge sheeting also put mass fuel ahead center gravity Most flyers using arrangement have now re-thought idea have put compartment behind high point spar line would seem beginning flight full tank fuel would either make model slightly tail-heavy balance just right full power streamer stabilize model thered no problem After fuel burned off model gliding would little noseheavy know nose-heavy planes easier land although exciting actual makeup bladder pacifier sys tem pretty straightforward Use piece /s brass copper tubing length fuel tubing pushed over inserted bladder pacifier sealed binding light copper wire string small rubber bands what-have-you Test seal inflating air open end bladder can tied knot can make up some neat plugs bind same way tie bladder will come out little longer plugged its lot easier youre careful about filtering fuel can probably get away using filter picture remote needle assembly shows pacifier connecting directly needle assem bly tou run filter sure put between pacifier needle asseinblr line going venturi well-known racing flier spotted Nationals filter line between jet needle valve Ive found adding filter line seems stabilize setting somewhat can see same picture almost anything can used pacifier compartment Beer cans snack pacs molded plastic wooden compartments same cannot said bladders Some worst agony experienced years ago used some toilet paper tubes house surgical tubing bladders inside diameter just too big let tubing flop around inside supporting engine would have set super-rich ground would still go over-lean air almost impossible figure out setting weight filled bladder also crimneri tine i exited wi~a would moments fuel would cut off entirely saved few cents buying rocket tubes created half-dozen lemons instead problem partially solved using very large diameter surgical tubing lesson learned hard way Ive found rocket tubing about cheapest Continued page 156 February 1983 69 basic bladder/pacifier-tank setup Remote needle valve well out harms way needle itself OS bracket venturi jet both Virginia Craftsman Note fuel pinchoff metal pacifier compartment dowels secure engine mounts wing structure Photo Dick Tyndali Aimee Olson Fargo ND wIth well-worn Combat model writing left wing says Anything boys can girls can BETTER flew Jr Combat 82 Nats Bruce Guertin Westland Ml 1/2A Combat model designed Pete Athans little help Rich Lopez couple nifty FAI Combat props acquired World Championships Top Bottom hand-carved Chinese paddle Russian toothpick real shame use such goodies Combat years WRAM Show going largest yet Well over 150 manutactarers asd other ex hibitors have already signed up brirrg everything thats sew hobby --- kits esgines radios accessories eoerythisg between famous Swap Shop will tall operotios thousands items including huittup planes almost sew radios engines vs some thing lost about everyone ADVANCED TICKET SALES Sane time d long ticket inns act Ed Alexis 1557 Central Park Ave Yonkers NY 15715 514-3375632 STATIC COMPETITION Make sure latest creation finished up potished youll have chance take home dozens 01 trvphies offered events rtvn xw i Moor tv exAm wIn 000 000w 50 50 tuaft un nIMernRn urns 010 ie Jogging takes plaon Sunday atm noun Oetrienaoonptxd until ft Ssxn Suvdan Sprolat admission area will prx video xv both days storm display uxvtestants built-up models GREAT RACE cont kept covering ground conservative pace Others chose ride out boomer streak course fast post speed limits would allow some follow ing above plans Dineen lived up Cis name cruised course seldom cir cling lift still taking advantage noon balloon sped along passing other teams way Because race against clock starting times begin flier starts course flier has little knowl edge performance compares others leapfrogging around coursewhich has 1490-degree directional changesone can easily lose track went last afternoon also talked about chase vehicles best No winners Seems though team has its own favorite mode transport team planes comfort old sixpassenger convertible tough beat can still find pick-up truck pop ular back end can accommodate fliers team support personnel planes van sunroof two carries planes people support equipment inside consideration planning pur poses taking account what might eegosfratixn yr mxdels will starr e atm nash morning SWAP SHOP WRAMs Swan shop van vome xxv moivr nIna attrau riven tlvusands individual ireew changing haydn nob eliminate rrgistratixn cross Inn Swap Shnp will Ornulon rxr preregis rration rorms recoivo rInse forms sand selravuresseu stamped envelvon John Ishisrer 4 prune Sni Lorolmnnf NY 15030 SPECIAL NOTE year will nxrrstriutons number vt bohr-up moons registrant may place iv tvn swap Ohvp Fx farmer vfxrmxtiuv nfl, tm OarS nielven no cveveova xv anito POiOv 5 V torva tsr lOtSOOO wssncesvmsr Santo aERxMxttnLErs met February 26/21 10 AM toO P M happen friendly cumulus types over develop standard sedan sunroof works well too have small crew quick-to-knock-down Sailplane Still others have used Jeeps other fourwheel type open-top vehicles pinch some have removed hatch hatch-back sedan Sailplanes Thats another reason event great Everybody has favorite best table lists entries chose Rememberr other contests 80% flier 20% Sailplane num bers probably spread further-apart cross country events cheering favorite team onward finish line last June 12 would have lot yell about box seats available wouldnt have empty 149 pm excited FAST Team first-ever cross finish line single launch did two hours 48 minutes SOAR minute behind landing II min utes behind elapsed time 210 came Jim Bohmer Ohio team Mary Knott Warren Plohr Jack Parry Don Harris winning time two hours 32 minutes Eleven minutes later Ken Bates MRCS crew also crossed line thinking first Ill leave imagination work expressions changed congratulated also told merely fourth place fora moment can dwell felt after first successful Sailplane flight felt caught first thermal broke three-minute barrier felt after fifth landing qualify Level [SF program might have experienced fraction what four teams felt conquered Soarings greatest challenge flight line Miller Hiner went back course same afternoon hour apartand covered another 23 miles before time ran out hopes bettering second third places Dineen setting record pace bird went 41-mile mark Porter missed turn towards end course landed 39-mile mark came back Sunday flew 449 miles Sunday Pat Flinns airborne pack gave out landed 75 km mark 06 mile finish line Watson SAC Stoll Switzerland flew regular F3B models Heitheckers flying wing destroyed practice after some impressive flights elevon flutter did went fly Scale ship meet Astir WIK Nine teams beat old mark set 1980 Great Race VII souvenir program includes photos names three-views complete list model details send $200 SOAR 23546 West Fern Plainfield IL 60544 information entry blanks Great Race VIII send SASE Dan Pruss 131 F Pennington Lane Plainfield IL 60544 Good trekking CL Combat/Johnson Continued page 69 readily-available material use -in inside diameter has matched particu lar size surgical tubing using techniques both systems similar Youll able fill pacifier ordinary fuel bulb surgical tubing will require syringe some sort no electrical fuel pumps allowed Cheap plastic syringes veterinar ians supply store will work well expensive metal ones wont hurt pocket book much lost broken rubber plungers deteriorate sure replace syringe notice black flakes rubber leaves dark mark wall syringe suppose could also lend competition surgical tubing develops lot pres sure pacifier needle settings become little critical havent run engine high-pressure system best way get setting halfway close follows I Close needle way 2 Fill bladder pacifier connect needle assembly 3 Point venturi down slowly open needle until avery light stream fuel comes out 4 Pinch off tubing using either fingers hemostat some other trick device youve 156 Model Aviation WRAM SHOW 83 Dont miss greatest Radio Control Show East Westchester County Center White Plains NY Its 15th annual show its sure biggest best ever 0000000 i;~ ff0000fffOOO0fS 000 N S a3 ENDURANCE RUBBER MODELS THE EASY BTHE TIME MACHINE PENNY 18 Spa 1/8 OZ E ,. $495 3 PARLOR PLANES 10 Span soBs FLAPPING FLYER 24 Span I/S OZ 2PARLORTHE SLOWPOKE Span IS cOPTERS 12 Soan 5495 95i2P2flflYg5 PIaSIC Pop ** STARSHIP 2 Yard Birds 12a Full Size Plans Full Size Prop Jig pl5tc ure Illustrated Ultra Light Balsa IlA1 i Bearing Micro Wa5hS *a Pirelli Rubber W 1120 oz L-135 * *** S105 STARSHIP 8100 Williams Book $20 Order INDOOR MODEL AIRPLANES Ron WIllIams 264 pgp Over 200 IIIustraIlOflP plus 2 FREE Full SIze Plan Sheen IMS Easy B 51295 INDOOR MODEL AIRPLANES Lew GItlow 46 Pga & Over 100 IlusIratlorIs reprInt .. $395 PEA N UT POWER Hannan 80 INDOOR BALSA $695 PHUT BALSA PACK $695 JAPANESE TISSUE 6 Colors 12 Pack $350Roll ol 10 large $595 ROLL OF MICROLITE COVERING $325 CONDENSER PAPER $250WASHERS $150 RUBBER LUBE $150CEMENT $150 THRUST BEARING New TIny 50 New Dual 100 NEW MARK 1 WINDERS16l $1195 NEW SMOOTHIE WINDERS61_______$395 61 WInder $195 wlIh $25 Order ALL ORDERS & KITS ADD 10% POSTAGE Minimum postage $150 16 PG CATALOG $100 DOX Ca OARBERVILLE CA 95440 assumes engine well broken new engine will complicate fuel system problems reason Id suggest use bladder breaking engines least until youve mastered use Char/it hhoson 37/6 Ingrahani St. San go CA 92119 FF Duration/Meuser Continued page 59 models weigh few tens grams have hundred square inches wing area give take factor five ten either way So suggest appropriate unit expressing covering weights grams per 100 square inches despite mixed English metric units big purity metric system am tell can buy pres sure gauge reads pascals explain metric countries express force grams rather newtons would accordance international standards laid tripin slightly less caustic form Mike Mulligan headperson down Oldsimer Models sort agreedbut well have wait about year until makes up new catalog printing costs know So itll take awhile get ball rolling think ball needs rolling Tom Hutchinson Memorial Trophy Youve prob ably already heard Tom died wrote obituary another publication time wasnt up writing second column Immediately upon Toms death talk newsletters about perpetual trophy name brought mind images some garish oversize affair plastic angels over possibly some home-brew concoc tion designed insurance salesman mechanical engineer dust has settled well will trophy will designed built professional Tom competed events favorite Nordic A/2 Towline Glider fitting trophy will awarded top 2 score US FF Championships year Donations toward purchase trophy should sent Steve Geraghty 194 Vista Del Monte Los Gatos CA 95030 Book reviews have couple month BCs Model Airplane Building Megows catalog 1940 Darned Good Airfoils Model Builder magazine January 1974 through September l982 have couple book presielrs too airfoils book compiled Bob Stalick includes drawings coordinates all-impor tant nose radii known 45 airfoils pub lished column earlier written Bob subsequently late Tom Hutchinson cluded both table contents alpha numeric index term alphanumeric index always puzzles cant imagine being other kind index Also included re prints Eppler Effect Tom Hutchinson Read Darned-Good-Airfoil Charts Host Became Instant Airfoil Expert Painless Lesson would have nice have comments about airfoils published along would have doubled sizeand costof book least price $2 plus $50 postage handling its biggest boggin town Order Stalick 5066 NW Picadilly Circle Albany OR 97321 20-page Megow reprint enlarged some what easier reading chock full construc tion how-to-do-its including such things make wire bender balsa stripper plans simple HL Glider baby ROG stick model IS-in span fuselage model finally rubber-power Monocoupe plus lots goodies about bending bamboo balsa about making propshafts S-hooks shockabsorbing landing gears Theres section solid display models finally glossary model aviation terms sells $395 available John J Frost P0 Box 317 Covington LA 70434 remains good guide beginner Frost now pushing sixty has aviation since childhood flying TBFs anti-submarine servtce later flying everything DC-3s jets commercial passenger service has sev eral reprints works including Boys Model Airplane Book 1911 com plete Megow catalog Model Aeroplanes Engines 1917 Aircraft Armament 1917 plus lots tech manuals such early aircraft engines plus complete set origi nal factory drawings Curtiss JN4-D Jenny An ambitious project Digital dethermalizer timer item singlefunction timer Towline Gliders rubberpower models Thomas Koster Denmark man ufactures sells unit based much expensive complex FAI Power model timer mentioned column last month still fairly expensive $55 using saves just flyaway short-DT per haps well worth price Accuracy claimed better / 100 sec Time can set 6sec 9 mm 54sec steps 6 sec Setting accomplished turn ing two rotary switches minutes other seconds DT release familiar 158 Model Aviation • ENUUfl MODELI1rrhY.E GET ORGANIZED s set 4 Sturdy lies thai holdS over 4 years 01 lavorrie e zines 4 MAG FILES $495 Send $495 pies 51 00 lo postage handlatg 0GM INOUSTUES P0 BOX 388-K DOVER NH 03820
Edition: Model Aviation - 1983/02
Page Numbers: 69, 156, 158
Control Line COMBAT Charlie Johnson USUALLY last thing said Combat construction articles install fuel system test fly model Enough people have trouble get ting simple suction tanks work much less pressure tank bladder/pacifier system Paci fiers have around long time maybe 25 years lot people give Riley Wooten credit development work least popularizing Pen bladders can included same group have lost popularity because theyve become scarce ones still available have deteriorated Actually pacifiers getting hard findat least form usuable Combat filled jellies moulded around plastic ring Ive heard people buying substitutes scientific stores theyre used another application Sur gical tubing has pretty much taken over once pen bladder ruled Its cheaper lasts longer available sizes term bladder nowadays taken include surgical-tubing tanks have choice fuel systems should quickly eliminate metal tanks because weigh never really work well bladder/pacifier system choice between bladder pacifier sometimes dictated design model pacifier needs large roundish compartment requires bulge airframe bladder rides inside tube some sort can hidden within wing entirely pacifier concentrates weight fuel closer center model whereas bladder tube generally runs outboard eives effect outboard weiahr type compartment considered design model shouldnt much difference handling caused bladder drag caused bulge pacifier compartment used common practice put paci fier compartment highest point wing order minimize bulge looked better too weakened leading edge sheeting also put mass fuel ahead center gravity Most flyers using arrangement have now re-thought idea have put compartment behind high point spar line would seem beginning flight full tank fuel would either make model slightly tail-heavy balance just right full power streamer stabilize model thered no problem After fuel burned off model gliding would little noseheavy know nose-heavy planes easier land although exciting actual makeup bladder pacifier sys tem pretty straightforward Use piece /s brass copper tubing length fuel tubing pushed over inserted bladder pacifier sealed binding light copper wire string small rubber bands what-have-you Test seal inflating air open end bladder can tied knot can make up some neat plugs bind same way tie bladder will come out little longer plugged its lot easier youre careful about filtering fuel can probably get away using filter picture remote needle assembly shows pacifier connecting directly needle assem bly tou run filter sure put between pacifier needle asseinblr line going venturi well-known racing flier spotted Nationals filter line between jet needle valve Ive found adding filter line seems stabilize setting somewhat can see same picture almost anything can used pacifier compartment Beer cans snack pacs molded plastic wooden compartments same cannot said bladders Some worst agony experienced years ago used some toilet paper tubes house surgical tubing bladders inside diameter just too big let tubing flop around inside supporting engine would have set super-rich ground would still go over-lean air almost impossible figure out setting weight filled bladder also crimneri tine i exited wi~a would moments fuel would cut off entirely saved few cents buying rocket tubes created half-dozen lemons instead problem partially solved using very large diameter surgical tubing lesson learned hard way Ive found rocket tubing about cheapest Continued page 156 February 1983 69 basic bladder/pacifier-tank setup Remote needle valve well out harms way needle itself OS bracket venturi jet both Virginia Craftsman Note fuel pinchoff metal pacifier compartment dowels secure engine mounts wing structure Photo Dick Tyndali Aimee Olson Fargo ND wIth well-worn Combat model writing left wing says Anything boys can girls can BETTER flew Jr Combat 82 Nats Bruce Guertin Westland Ml 1/2A Combat model designed Pete Athans little help Rich Lopez couple nifty FAI Combat props acquired World Championships Top Bottom hand-carved Chinese paddle Russian toothpick real shame use such goodies Combat years WRAM Show going largest yet Well over 150 manutactarers asd other ex hibitors have already signed up brirrg everything thats sew hobby --- kits esgines radios accessories eoerythisg between famous Swap Shop will tall operotios thousands items including huittup planes almost sew radios engines vs some thing lost about everyone ADVANCED TICKET SALES Sane time d long ticket inns act Ed Alexis 1557 Central Park Ave Yonkers NY 15715 514-3375632 STATIC COMPETITION Make sure latest creation finished up potished youll have chance take home dozens 01 trvphies offered events rtvn xw i Moor tv exAm wIn 000 000w 50 50 tuaft un nIMernRn urns 010 ie Jogging takes plaon Sunday atm noun Oetrienaoonptxd until ft Ssxn Suvdan Sprolat admission area will prx video xv both days storm display uxvtestants built-up models GREAT RACE cont kept covering ground conservative pace Others chose ride out boomer streak course fast post speed limits would allow some follow ing above plans Dineen lived up Cis name cruised course seldom cir cling lift still taking advantage noon balloon sped along passing other teams way Because race against clock starting times begin flier starts course flier has little knowl edge performance compares others leapfrogging around coursewhich has 1490-degree directional changesone can easily lose track went last afternoon also talked about chase vehicles best No winners Seems though team has its own favorite mode transport team planes comfort old sixpassenger convertible tough beat can still find pick-up truck pop ular back end can accommodate fliers team support personnel planes van sunroof two carries planes people support equipment inside consideration planning pur poses taking account what might eegosfratixn yr mxdels will starr e atm nash morning SWAP SHOP WRAMs Swan shop van vome xxv moivr nIna attrau riven tlvusands individual ireew changing haydn nob eliminate rrgistratixn cross Inn Swap Shnp will Ornulon rxr preregis rration rorms recoivo rInse forms sand selravuresseu stamped envelvon John Ishisrer 4 prune Sni Lorolmnnf NY 15030 SPECIAL NOTE year will nxrrstriutons number vt bohr-up moons registrant may place iv tvn swap Ohvp Fx farmer vfxrmxtiuv nfl, tm OarS nielven no cveveova xv anito POiOv 5 V torva tsr lOtSOOO wssncesvmsr Santo aERxMxttnLErs met February 26/21 10 AM toO P M happen friendly cumulus types over develop standard sedan sunroof works well too have small crew quick-to-knock-down Sailplane Still others have used Jeeps other fourwheel type open-top vehicles pinch some have removed hatch hatch-back sedan Sailplanes Thats another reason event great Everybody has favorite best table lists entries chose Rememberr other contests 80% flier 20% Sailplane num bers probably spread further-apart cross country events cheering favorite team onward finish line last June 12 would have lot yell about box seats available wouldnt have empty 149 pm excited FAST Team first-ever cross finish line single launch did two hours 48 minutes SOAR minute behind landing II min utes behind elapsed time 210 came Jim Bohmer Ohio team Mary Knott Warren Plohr Jack Parry Don Harris winning time two hours 32 minutes Eleven minutes later Ken Bates MRCS crew also crossed line thinking first Ill leave imagination work expressions changed congratulated also told merely fourth place fora moment can dwell felt after first successful Sailplane flight felt caught first thermal broke three-minute barrier felt after fifth landing qualify Level [SF program might have experienced fraction what four teams felt conquered Soarings greatest challenge flight line Miller Hiner went back course same afternoon hour apartand covered another 23 miles before time ran out hopes bettering second third places Dineen setting record pace bird went 41-mile mark Porter missed turn towards end course landed 39-mile mark came back Sunday flew 449 miles Sunday Pat Flinns airborne pack gave out landed 75 km mark 06 mile finish line Watson SAC Stoll Switzerland flew regular F3B models Heitheckers flying wing destroyed practice after some impressive flights elevon flutter did went fly Scale ship meet Astir WIK Nine teams beat old mark set 1980 Great Race VII souvenir program includes photos names three-views complete list model details send $200 SOAR 23546 West Fern Plainfield IL 60544 information entry blanks Great Race VIII send SASE Dan Pruss 131 F Pennington Lane Plainfield IL 60544 Good trekking CL Combat/Johnson Continued page 69 readily-available material use -in inside diameter has matched particu lar size surgical tubing using techniques both systems similar Youll able fill pacifier ordinary fuel bulb surgical tubing will require syringe some sort no electrical fuel pumps allowed Cheap plastic syringes veterinar ians supply store will work well expensive metal ones wont hurt pocket book much lost broken rubber plungers deteriorate sure replace syringe notice black flakes rubber leaves dark mark wall syringe suppose could also lend competition surgical tubing develops lot pres sure pacifier needle settings become little critical havent run engine high-pressure system best way get setting halfway close follows I Close needle way 2 Fill bladder pacifier connect needle assembly 3 Point venturi down slowly open needle until avery light stream fuel comes out 4 Pinch off tubing using either fingers hemostat some other trick device youve 156 Model Aviation WRAM SHOW 83 Dont miss greatest Radio Control Show East Westchester County Center White Plains NY Its 15th annual show its sure biggest best ever 0000000 i;~ ff0000fffOOO0fS 000 N S a3 ENDURANCE RUBBER MODELS THE EASY BTHE TIME MACHINE PENNY 18 Spa 1/8 OZ E ,. $495 3 PARLOR PLANES 10 Span soBs FLAPPING FLYER 24 Span I/S OZ 2PARLORTHE SLOWPOKE Span IS cOPTERS 12 Soan 5495 95i2P2flflYg5 PIaSIC Pop ** STARSHIP 2 Yard Birds 12a Full Size Plans Full Size Prop Jig pl5tc ure Illustrated Ultra Light Balsa IlA1 i Bearing Micro Wa5hS *a Pirelli Rubber W 1120 oz L-135 * *** S105 STARSHIP 8100 Williams Book $20 Order INDOOR MODEL AIRPLANES Ron WIllIams 264 pgp Over 200 IIIustraIlOflP plus 2 FREE Full SIze Plan Sheen IMS Easy B 51295 INDOOR MODEL AIRPLANES Lew GItlow 46 Pga & Over 100 IlusIratlorIs reprInt .. $395 PEA N UT POWER Hannan 80 INDOOR BALSA $695 PHUT BALSA PACK $695 JAPANESE TISSUE 6 Colors 12 Pack $350Roll ol 10 large $595 ROLL OF MICROLITE COVERING $325 CONDENSER PAPER $250WASHERS $150 RUBBER LUBE $150CEMENT $150 THRUST BEARING New TIny 50 New Dual 100 NEW MARK 1 WINDERS16l $1195 NEW SMOOTHIE WINDERS61_______$395 61 WInder $195 wlIh $25 Order ALL ORDERS & KITS ADD 10% POSTAGE Minimum postage $150 16 PG CATALOG $100 DOX Ca OARBERVILLE CA 95440 assumes engine well broken new engine will complicate fuel system problems reason Id suggest use bladder breaking engines least until youve mastered use Char/it hhoson 37/6 Ingrahani St. San go CA 92119 FF Duration/Meuser Continued page 59 models weigh few tens grams have hundred square inches wing area give take factor five ten either way So suggest appropriate unit expressing covering weights grams per 100 square inches despite mixed English metric units big purity metric system am tell can buy pres sure gauge reads pascals explain metric countries express force grams rather newtons would accordance international standards laid tripin slightly less caustic form Mike Mulligan headperson down Oldsimer Models sort agreedbut well have wait about year until makes up new catalog printing costs know So itll take awhile get ball rolling think ball needs rolling Tom Hutchinson Memorial Trophy Youve prob ably already heard Tom died wrote obituary another publication time wasnt up writing second column Immediately upon Toms death talk newsletters about perpetual trophy name brought mind images some garish oversize affair plastic angels over possibly some home-brew concoc tion designed insurance salesman mechanical engineer dust has settled well will trophy will designed built professional Tom competed events favorite Nordic A/2 Towline Glider fitting trophy will awarded top 2 score US FF Championships year Donations toward purchase trophy should sent Steve Geraghty 194 Vista Del Monte Los Gatos CA 95030 Book reviews have couple month BCs Model Airplane Building Megows catalog 1940 Darned Good Airfoils Model Builder magazine January 1974 through September l982 have couple book presielrs too airfoils book compiled Bob Stalick includes drawings coordinates all-impor tant nose radii known 45 airfoils pub lished column earlier written Bob subsequently late Tom Hutchinson cluded both table contents alpha numeric index term alphanumeric index always puzzles cant imagine being other kind index Also included re prints Eppler Effect Tom Hutchinson Read Darned-Good-Airfoil Charts Host Became Instant Airfoil Expert Painless Lesson would have nice have comments about airfoils published along would have doubled sizeand costof book least price $2 plus $50 postage handling its biggest boggin town Order Stalick 5066 NW Picadilly Circle Albany OR 97321 20-page Megow reprint enlarged some what easier reading chock full construc tion how-to-do-its including such things make wire bender balsa stripper plans simple HL Glider baby ROG stick model IS-in span fuselage model finally rubber-power Monocoupe plus lots goodies about bending bamboo balsa about making propshafts S-hooks shockabsorbing landing gears Theres section solid display models finally glossary model aviation terms sells $395 available John J Frost P0 Box 317 Covington LA 70434 remains good guide beginner Frost now pushing sixty has aviation since childhood flying TBFs anti-submarine servtce later flying everything DC-3s jets commercial passenger service has sev eral reprints works including Boys Model Airplane Book 1911 com plete Megow catalog Model Aeroplanes Engines 1917 Aircraft Armament 1917 plus lots tech manuals such early aircraft engines plus complete set origi nal factory drawings Curtiss JN4-D Jenny An ambitious project Digital dethermalizer timer item singlefunction timer Towline Gliders rubberpower models Thomas Koster Denmark man ufactures sells unit based much expensive complex FAI Power model timer mentioned column last month still fairly expensive $55 using saves just flyaway short-DT per haps well worth price Accuracy claimed better / 100 sec Time can set 6sec 9 mm 54sec steps 6 sec Setting accomplished turn ing two rotary switches minutes other seconds DT release familiar 158 Model Aviation • ENUUfl MODELI1rrhY.E GET ORGANIZED s set 4 Sturdy lies thai holdS over 4 years 01 lavorrie e zines 4 MAG FILES $495 Send $495 pies 51 00 lo postage handlatg 0GM INOUSTUES P0 BOX 388-K DOVER NH 03820
Edition: Model Aviation - 1983/02
Page Numbers: 69, 156, 158
Control Line COMBAT Charlie Johnson USUALLY last thing said Combat construction articles install fuel system test fly model Enough people have trouble get ting simple suction tanks work much less pressure tank bladder/pacifier system Paci fiers have around long time maybe 25 years lot people give Riley Wooten credit development work least popularizing Pen bladders can included same group have lost popularity because theyve become scarce ones still available have deteriorated Actually pacifiers getting hard findat least form usuable Combat filled jellies moulded around plastic ring Ive heard people buying substitutes scientific stores theyre used another application Sur gical tubing has pretty much taken over once pen bladder ruled Its cheaper lasts longer available sizes term bladder nowadays taken include surgical-tubing tanks have choice fuel systems should quickly eliminate metal tanks because weigh never really work well bladder/pacifier system choice between bladder pacifier sometimes dictated design model pacifier needs large roundish compartment requires bulge airframe bladder rides inside tube some sort can hidden within wing entirely pacifier concentrates weight fuel closer center model whereas bladder tube generally runs outboard eives effect outboard weiahr type compartment considered design model shouldnt much difference handling caused bladder drag caused bulge pacifier compartment used common practice put paci fier compartment highest point wing order minimize bulge looked better too weakened leading edge sheeting also put mass fuel ahead center gravity Most flyers using arrangement have now re-thought idea have put compartment behind high point spar line would seem beginning flight full tank fuel would either make model slightly tail-heavy balance just right full power streamer stabilize model thered no problem After fuel burned off model gliding would little noseheavy know nose-heavy planes easier land although exciting actual makeup bladder pacifier sys tem pretty straightforward Use piece /s brass copper tubing length fuel tubing pushed over inserted bladder pacifier sealed binding light copper wire string small rubber bands what-have-you Test seal inflating air open end bladder can tied knot can make up some neat plugs bind same way tie bladder will come out little longer plugged its lot easier youre careful about filtering fuel can probably get away using filter picture remote needle assembly shows pacifier connecting directly needle assem bly tou run filter sure put between pacifier needle asseinblr line going venturi well-known racing flier spotted Nationals filter line between jet needle valve Ive found adding filter line seems stabilize setting somewhat can see same picture almost anything can used pacifier compartment Beer cans snack pacs molded plastic wooden compartments same cannot said bladders Some worst agony experienced years ago used some toilet paper tubes house surgical tubing bladders inside diameter just too big let tubing flop around inside supporting engine would have set super-rich ground would still go over-lean air almost impossible figure out setting weight filled bladder also crimneri tine i exited wi~a would moments fuel would cut off entirely saved few cents buying rocket tubes created half-dozen lemons instead problem partially solved using very large diameter surgical tubing lesson learned hard way Ive found rocket tubing about cheapest Continued page 156 February 1983 69 basic bladder/pacifier-tank setup Remote needle valve well out harms way needle itself OS bracket venturi jet both Virginia Craftsman Note fuel pinchoff metal pacifier compartment dowels secure engine mounts wing structure Photo Dick Tyndali Aimee Olson Fargo ND wIth well-worn Combat model writing left wing says Anything boys can girls can BETTER flew Jr Combat 82 Nats Bruce Guertin Westland Ml 1/2A Combat model designed Pete Athans little help Rich Lopez couple nifty FAI Combat props acquired World Championships Top Bottom hand-carved Chinese paddle Russian toothpick real shame use such goodies Combat years WRAM Show going largest yet Well over 150 manutactarers asd other ex hibitors have already signed up brirrg everything thats sew hobby --- kits esgines radios accessories eoerythisg between famous Swap Shop will tall operotios thousands items including huittup planes almost sew radios engines vs some thing lost about everyone ADVANCED TICKET SALES Sane time d long ticket inns act Ed Alexis 1557 Central Park Ave Yonkers NY 15715 514-3375632 STATIC COMPETITION Make sure latest creation finished up potished youll have chance take home dozens 01 trvphies offered events rtvn xw i Moor tv exAm wIn 000 000w 50 50 tuaft un nIMernRn urns 010 ie Jogging takes plaon Sunday atm noun Oetrienaoonptxd until ft Ssxn Suvdan Sprolat admission area will prx video xv both days storm display uxvtestants built-up models GREAT RACE cont kept covering ground conservative pace Others chose ride out boomer streak course fast post speed limits would allow some follow ing above plans Dineen lived up Cis name cruised course seldom cir cling lift still taking advantage noon balloon sped along passing other teams way Because race against clock starting times begin flier starts course flier has little knowl edge performance compares others leapfrogging around coursewhich has 1490-degree directional changesone can easily lose track went last afternoon also talked about chase vehicles best No winners Seems though team has its own favorite mode transport team planes comfort old sixpassenger convertible tough beat can still find pick-up truck pop ular back end can accommodate fliers team support personnel planes van sunroof two carries planes people support equipment inside consideration planning pur poses taking account what might eegosfratixn yr mxdels will starr e atm nash morning SWAP SHOP WRAMs Swan shop van vome xxv moivr nIna attrau riven tlvusands individual ireew changing haydn nob eliminate rrgistratixn cross Inn Swap Shnp will Ornulon rxr preregis rration rorms recoivo rInse forms sand selravuresseu stamped envelvon John Ishisrer 4 prune Sni Lorolmnnf NY 15030 SPECIAL NOTE year will nxrrstriutons number vt bohr-up moons registrant may place iv tvn swap Ohvp Fx farmer vfxrmxtiuv nfl, tm OarS nielven no cveveova xv anito POiOv 5 V torva tsr lOtSOOO wssncesvmsr Santo aERxMxttnLErs met February 26/21 10 AM toO P M happen friendly cumulus types over develop standard sedan sunroof works well too have small crew quick-to-knock-down Sailplane Still others have used Jeeps other fourwheel type open-top vehicles pinch some have removed hatch hatch-back sedan Sailplanes Thats another reason event great Everybody has favorite best table lists entries chose Rememberr other contests 80% flier 20% Sailplane num bers probably spread further-apart cross country events cheering favorite team onward finish line last June 12 would have lot yell about box seats available wouldnt have empty 149 pm excited FAST Team first-ever cross finish line single launch did two hours 48 minutes SOAR minute behind landing II min utes behind elapsed time 210 came Jim Bohmer Ohio team Mary Knott Warren Plohr Jack Parry Don Harris winning time two hours 32 minutes Eleven minutes later Ken Bates MRCS crew also crossed line thinking first Ill leave imagination work expressions changed congratulated also told merely fourth place fora moment can dwell felt after first successful Sailplane flight felt caught first thermal broke three-minute barrier felt after fifth landing qualify Level [SF program might have experienced fraction what four teams felt conquered Soarings greatest challenge flight line Miller Hiner went back course same afternoon hour apartand covered another 23 miles before time ran out hopes bettering second third places Dineen setting record pace bird went 41-mile mark Porter missed turn towards end course landed 39-mile mark came back Sunday flew 449 miles Sunday Pat Flinns airborne pack gave out landed 75 km mark 06 mile finish line Watson SAC Stoll Switzerland flew regular F3B models Heitheckers flying wing destroyed practice after some impressive flights elevon flutter did went fly Scale ship meet Astir WIK Nine teams beat old mark set 1980 Great Race VII souvenir program includes photos names three-views complete list model details send $200 SOAR 23546 West Fern Plainfield IL 60544 information entry blanks Great Race VIII send SASE Dan Pruss 131 F Pennington Lane Plainfield IL 60544 Good trekking CL Combat/Johnson Continued page 69 readily-available material use -in inside diameter has matched particu lar size surgical tubing using techniques both systems similar Youll able fill pacifier ordinary fuel bulb surgical tubing will require syringe some sort no electrical fuel pumps allowed Cheap plastic syringes veterinar ians supply store will work well expensive metal ones wont hurt pocket book much lost broken rubber plungers deteriorate sure replace syringe notice black flakes rubber leaves dark mark wall syringe suppose could also lend competition surgical tubing develops lot pres sure pacifier needle settings become little critical havent run engine high-pressure system best way get setting halfway close follows I Close needle way 2 Fill bladder pacifier connect needle assembly 3 Point venturi down slowly open needle until avery light stream fuel comes out 4 Pinch off tubing using either fingers hemostat some other trick device youve 156 Model Aviation WRAM SHOW 83 Dont miss greatest Radio Control Show East Westchester County Center White Plains NY Its 15th annual show its sure biggest best ever 0000000 i;~ ff0000fffOOO0fS 000 N S a3 ENDURANCE RUBBER MODELS THE EASY BTHE TIME MACHINE PENNY 18 Spa 1/8 OZ E ,. $495 3 PARLOR PLANES 10 Span soBs FLAPPING FLYER 24 Span I/S OZ 2PARLORTHE SLOWPOKE Span IS cOPTERS 12 Soan 5495 95i2P2flflYg5 PIaSIC Pop ** STARSHIP 2 Yard Birds 12a Full Size Plans Full Size Prop Jig pl5tc ure Illustrated Ultra Light Balsa IlA1 i Bearing Micro Wa5hS *a Pirelli Rubber W 1120 oz L-135 * *** S105 STARSHIP 8100 Williams Book $20 Order INDOOR MODEL AIRPLANES Ron WIllIams 264 pgp Over 200 IIIustraIlOflP plus 2 FREE Full SIze Plan Sheen IMS Easy B 51295 INDOOR MODEL AIRPLANES Lew GItlow 46 Pga & Over 100 IlusIratlorIs reprInt .. $395 PEA N UT POWER Hannan 80 INDOOR BALSA $695 PHUT BALSA PACK $695 JAPANESE TISSUE 6 Colors 12 Pack $350Roll ol 10 large $595 ROLL OF MICROLITE COVERING $325 CONDENSER PAPER $250WASHERS $150 RUBBER LUBE $150CEMENT $150 THRUST BEARING New TIny 50 New Dual 100 NEW MARK 1 WINDERS16l $1195 NEW SMOOTHIE WINDERS61_______$395 61 WInder $195 wlIh $25 Order ALL ORDERS & KITS ADD 10% POSTAGE Minimum postage $150 16 PG CATALOG $100 DOX Ca OARBERVILLE CA 95440 assumes engine well broken new engine will complicate fuel system problems reason Id suggest use bladder breaking engines least until youve mastered use Char/it hhoson 37/6 Ingrahani St. San go CA 92119 FF Duration/Meuser Continued page 59 models weigh few tens grams have hundred square inches wing area give take factor five ten either way So suggest appropriate unit expressing covering weights grams per 100 square inches despite mixed English metric units big purity metric system am tell can buy pres sure gauge reads pascals explain metric countries express force grams rather newtons would accordance international standards laid tripin slightly less caustic form Mike Mulligan headperson down Oldsimer Models sort agreedbut well have wait about year until makes up new catalog printing costs know So itll take awhile get ball rolling think ball needs rolling Tom Hutchinson Memorial Trophy Youve prob ably already heard Tom died wrote obituary another publication time wasnt up writing second column Immediately upon Toms death talk newsletters about perpetual trophy name brought mind images some garish oversize affair plastic angels over possibly some home-brew concoc tion designed insurance salesman mechanical engineer dust has settled well will trophy will designed built professional Tom competed events favorite Nordic A/2 Towline Glider fitting trophy will awarded top 2 score US FF Championships year Donations toward purchase trophy should sent Steve Geraghty 194 Vista Del Monte Los Gatos CA 95030 Book reviews have couple month BCs Model Airplane Building Megows catalog 1940 Darned Good Airfoils Model Builder magazine January 1974 through September l982 have couple book presielrs too airfoils book compiled Bob Stalick includes drawings coordinates all-impor tant nose radii known 45 airfoils pub lished column earlier written Bob subsequently late Tom Hutchinson cluded both table contents alpha numeric index term alphanumeric index always puzzles cant imagine being other kind index Also included re prints Eppler Effect Tom Hutchinson Read Darned-Good-Airfoil Charts Host Became Instant Airfoil Expert Painless Lesson would have nice have comments about airfoils published along would have doubled sizeand costof book least price $2 plus $50 postage handling its biggest boggin town Order Stalick 5066 NW Picadilly Circle Albany OR 97321 20-page Megow reprint enlarged some what easier reading chock full construc tion how-to-do-its including such things make wire bender balsa stripper plans simple HL Glider baby ROG stick model IS-in span fuselage model finally rubber-power Monocoupe plus lots goodies about bending bamboo balsa about making propshafts S-hooks shockabsorbing landing gears Theres section solid display models finally glossary model aviation terms sells $395 available John J Frost P0 Box 317 Covington LA 70434 remains good guide beginner Frost now pushing sixty has aviation since childhood flying TBFs anti-submarine servtce later flying everything DC-3s jets commercial passenger service has sev eral reprints works including Boys Model Airplane Book 1911 com plete Megow catalog Model Aeroplanes Engines 1917 Aircraft Armament 1917 plus lots tech manuals such early aircraft engines plus complete set origi nal factory drawings Curtiss JN4-D Jenny An ambitious project Digital dethermalizer timer item singlefunction timer Towline Gliders rubberpower models Thomas Koster Denmark man ufactures sells unit based much expensive complex FAI Power model timer mentioned column last month still fairly expensive $55 using saves just flyaway short-DT per haps well worth price Accuracy claimed better / 100 sec Time can set 6sec 9 mm 54sec steps 6 sec Setting accomplished turn ing two rotary switches minutes other seconds DT release familiar 158 Model Aviation • ENUUfl MODELI1rrhY.E GET ORGANIZED s set 4 Sturdy lies thai holdS over 4 years 01 lavorrie e zines 4 MAG FILES $495 Send $495 pies 51 00 lo postage handlatg 0GM INOUSTUES P0 BOX 388-K DOVER NH 03820