Free Flight TA-DAHHH Ordinarily am given bragging reason seldom have anything brag about now shiny new AMA National Record certificate adorns workshop wall first time eight years Last weekend set new record 13 mm 562 sec Category Ill Pennyplane doesnt quite have stature C-Gas record FAI Indoor record will starters anyhow wasnt fluke worked up grad ually getting increasingly better matches between motor prop starting off 10-mm first flight Duration isnt too bad itself model clearly superior previous also has 6-in chord model using same prop same rubber record model struggle get 8 mm No Non-Cents seems pretty good model wish knew guess have sort motherly feeling about Pennyplane pro posal make official AMA event accepted Free Flight Con test Board AMA real credit should go Fry Rodemsky invented event Dave Linstrum promoted VTO column Model Airplane Bob Meuser News several articles Chi cago Aeronuts sponsored several Nats guys like Dennis Jaecks Clarence Mather Charlie Sotich Larry Cailliau others pointed way toward better performance record flight will stand up good company quite best has ever done Pennyplane John Kukon experienced Indoor flier has done over 16 mm rather sophis ticated biplane Im sure record proves anything does Left No Non-Cents drawing belowl Pennyplane Bob Meuser four min utes better previous job used same prop rubberand chord Right Jim Lewis takes time out smile winding Mulvihill-winning Unlimited rubber model Martin Richardson chors Photo Jim Scarborough r PENNYPLANE3 NO NON-CENTS CATEGORY Ill OPEN RECOD 13m562s JAN 7 BOB ME&JSC 7 3 lB 9 K xx [5 /8 WEAL Jim Zewiss 7irts-wjnni9 rubber-power nicer 3 2 7% londeroPiS thr&rjrcPt2sSgmif 6 &zysun 8 serapid edtv SAR*e ifkr a~emb4 40 Model Aviation PROP I6jD FORMEDON iT R BLOCI BLADES ROTATED TO 32 P h Any bumble-thumbed outdoor-style free fighter can achieve modicum success have whale lot fun boot Indoor modeling via Pennyplane route having go ultra-light micro film models giant leap encore think might try FAI stuff Tremble fear Jim Richmond Jim Lewis Story So Jim Lewis ask Until recently might have legitimate question Jim has out modeling decade recently made comeback what comeback First place two top rubber-power events 1974 Nats Unlimited Rubber Coupe dHiver first places Hand-Launch Glider Rubber-Power Speed Rub ber Power Helicopter third A/2 Towline glider chaser Jim priv ileged own Mulvihill Dick Black Memorial Trophies year addition new Donald Lockwood Trophy Rubber Speed Jim got lot help George Perryman has within spittin distance N4ulvihill Trophy times anyone else would care count Mike Bailey another Georges proteges won Mulvihill 1969 Willow Grove Nats run-down some Jims hardware Unlimited Rubber George Perrymans Little Daddy de sign Sixteen strands Pirelli OldTimer Models Jims model won four contests entered up 1975 Nats Coupe dHiver Frank Per kins Checkmate design minor modifications wing pylon An alumi num motor tube rolled sheet-balsa boom used Hand-Launch Glider Mathis Flash M P kit now manufactured American Balsa Corp tips installed backwards give sweepback Rubber-Power Heli copter Essentially over-grown Jim Walker Ceiling Walker 30-in motor tube pair 18-inch counterrotating props end Power four strands 1/8 Pirelli A/2 Towline Glider Don Chanceys Poacher de sign same Don used earn spot US Nordic team Circle tow used Rubber Power Speed Jim put gether information published about models entered 1973 Nats mixed well distilled 18-in model using 5 Kaysun plastic prop Jims speed standing start over 200-ft course shade over 50 mph bit tissue rubber balsa thats moving. Hank Coles Prop Stop invention folding prop rubber-powered models thirties required device stop prop certain position motor wound down decades simple tensioner device uni versal solution As tension motor decreased spring pushed prop shaft forward until projection prop shaft engaged peg protruding 2ow torque Acok enbayeS catch c/ears 74bhtorue 93 Bob Whites version Hank Coles prop-stop per Rubber motor torsion forces hooked arm outward torsion relaxes spring forces hooked arm inward engage wire loop block Meuser pic 2 1 1 ______ 25 1 14 back nose block came Montreal stop torque motor holds pin prop hub retracted position until torque decreases point spring pops pin hole front nose block satisfactory solution didnt satisfy Hank Cole thing Montreal stop doesnt fit Hanks style Hank likes make things music wire So developed alternative Bob White saw Coles design recognized solution problem Bob tried Montreal stop abandoned favor old-fashioned tensioner Montreal stop failed function after Bobs Wakefield stuck its nose sand grain two got becontinued page 99 Vae Parsons caraput {idr autcfstaA ~~1 8 5ee te%t addriona1Jtaits May1976 41 Dave Parsons M onokote-covered catapult glid er features Tatone timer operated auto-stab chase away zoomies K1126515 --2 4 FF Duration/MeuserPaint Mixer Mixing heavily pigcontinued page 41mented paints tiny bottles use ful scale modeling lot easier let machine job make mixer has shaking action just like big ones paint stores tween some closely fitting sliding parts clearances can generous Hanks design parts rotate rather slide jamming unlikely photos show works Note torsion spring tending draw stop arm inward torque spring must adjusted arm re leased rubber motor has ex pended its energy has gone completely slack Catapult Capers Dave Parsons Kinesis isnt sort catapult glider would build goal maximize win po tential minimizing expenditure effort about complex cata pult glider can Its noteworthy feature timer-operated autostab string tied Daves wrist pulls pin starts timer glider released During climb phase flight trailing edge stabilizer held down model goes up rails showing no tendency zoom loop Just launching energy dissipated timer actuates autostab mechanism permitting trailing edge stab pop up about 1/16 its glide position mechanism identical Dave has used FAI Power models See Daves Cathexis featured No vember issue Wing ribs rudder fuselage sides 1/16 sheet balsa Stabilizer carved 3/16 sheet front part wing made 3/8 sheet tapered provide constant 6%-thick section Lead ing edge reinforced spruce Top bottom fuselage hard 1/8 X 3/8 inch strips Additional spruce strips used reinforce nose section provide anchor launching hook Wing covered Monokote CG 65% root chord back lead ing edge total weight including Tatone /2A timer 3 oz about one-third weight its some what larger precursor Cut piece sheet metalany metal will do--roughly 030 X x 8 Obtain small DC electric motor power sourcebatteries HO train trans former Secure eccentric weight motor shaft pressing soldering cementing epoxy Tape motor onto end metal strip Secure paint bottle opposite side metal strip using tape rubber bands Clamp opposite end metal strip vise Turn juice behold wonders nature device can tuned maximum shake varying length sheet metal extends beyond vise good source small electric motors Edmond Scientific Co Barrington NJ 08007 Theyll delighted send catalog try hobby shop Professor Perrymans Big Bird George Perryman has won Old-Timer Rubber event King Orange Internats seven times row Nats five years straight Latest stable cludes Jabberwock Korda Detherma lizer California Champ Lanzo 1940 Stick model Plans availMay1976 99 Mousers Magic Mixer can mix paint faster can shake stick Great tiny bottles Uses small DC motor eccentric weight taped end metal strip held vise Two George Perrymans pride joys granddaughter Stephanie 40 Lanzo Stick 6 Stephanie Nats winner Rozelle pic Scearman C 3 B2Z2 GENERALThE 1929 Aristocrat FOR-11Ez2"9191]FOR RAAIO CONTROL AR FREE FLIGHTsRIpENraIflWINGSPAN FOR RUBBER COO SIRREANT FOR SC WINGSPAN 000 POWER9WGEAIATE SARA CONTROL UP 00 TOREE ORANNELSONE OF TOE GOLOEN EROS GREATEST AIRCRAFTAGASOELISOTTO SUILA ARISTORT UAEER BEFORE WARTN________S 1290SOAR AMERICAN BELLANCA S Lpockpt P/PER Cl/S SPAN OAR POWER FOR O5NR N CONTROL UP TO TORtESC WINGSPAN 020 POWER FOR FREE ..A SNELS TRUE CLANSIC AIR FROG ORE SOLOEN ERGFLIGhT OR RASIA CONTROL PL001OWIL SC WINGSPANAW 5200 FALSE ANN SaGR CANTROL UNITS CAR BE PLOWS FREE FLIGRT ON POWER OR ROBBERTTfN ON AIRECT OROESS ADO lOT FOR PACEINS ASS BESS ASE CA REOIOESTS ADO AT TAXFiN t.iY1tiJEL YOUR LOCAL HOBBY DEALER 10643ASHBY FLFAIRFAX VA22030 DONT POWER CYTM THE ORIGINAL IN PLANE BATTERY MONITOR Now fly confidence glance POWER-CyT instantly know charge condition battery pack Three times brighter other POWER-CyT__________________________________ goes off batteries 10 20 minute safety margin Detects bad cells Easy installation Weighs Va oz Guaranteed 1 year____________________ CYI4 INDUSTRIES 611 S East Ave. Oak Park II 60304 312 848-8555 Dealer Distributor inquiries invited FF Duration continued able Model Builder magazine plan no 1174OT $350 Stick Em patterns cost additional $195 Address Box 4336 Santa Ana Ca 92702 hunch might story hind big Lanzo machine asked George about wasnt wrong Old-Timer Rubber models have built Lanzo competi tive over 3 sq ft wing stab area weight 7 oz flies al well modern birds first met Chet Lanzo 1941 Nats Chicago 21-year-old Chet boyhood idol model ings all-time greats Chet took interest showed adjusted model asked about chased model him test flights great enthusi asm can remember wonder long motor runs fondly remember Chet Lanzo fine gentleman helped little country boy Georgia learn some fine points modeling Wilders Winder advice experts occasional opportunity borrow good winder made clear smooth-running winder great help putting maximum turns rubber motor breaking propensity los ing track number turns made clear next winder must have built-in turns counter After pondering problem designing building own specifications great relief discover could such winder paltry $2450 plus $100 postage handling charge Bob Wilder 2010 Boston Irving TX 75061 Bobs winder has 20-to-i ratio little higher normal door microfilm model type winder very high some other uses intended itindoor scale example winder having mini mum friction high ratio ad vantage gives stronger feel motor torque Wilder winder sports double reduction wide-face Nylon gears precision ball bearing output shaft ensure smooth run_PATENT PE ning under load winders seem smooth operated load nearly jam under tension fully wound motor counter simple dial-and-pointer affair reading 500 turns revolution pointer increments S turns going put say 1650 turns motor will have pay little atten tion avoid putting 1150 2150 stead counter re-set simply push ing pointer back zero position CL Speed/Bussell continued page 30 Close will find line drawing showing typical wing planform lifting section ing root symmetrical tips same wing planform symmetrical section sym metrical both root tip sec tion drawings airfoils drawn oversize show properly designed airfoil high point 33% back leading edge both airfoils Indoor microfilm type winder Bob Wilder see textl smooth running includes turn counter 20-to1 ratio sells $2450 unit intended serviced owner disassembly attempted gears shafts spacers washers tend fly over workshop Reassembly trial-and-error method enough make strong man cry servicing ever necessary highly unlikely sug gest send winder back Bob Wilder address 4200 Gregory St Oak land Calif 94619 Wing Stab Control Surfaces As Formula 40 Speed need least 90 sq in wing want come off ground hurry can use much 125 sq Stab area should no less 35% wing area no 50% same use same size elevator Class B B Proto Formula 40 Ships 3 long will give plenty control movement Speed flying BA--1TYPICAL WING PLANFORM e B LIFTING ROOT SECTION A-A TIP SECTION B-B 100 Model Aviation rSTANDARD. 1195 4BV DELUXE 95 win pigsi SYMMETRICAL
Edition: Model Aviation - 1976/05
Page Numbers: 40, 41, 99, 100
Edition: Model Aviation - 1976/05
Page Numbers: 40, 41, 99, 100
Free Flight TA-DAHHH Ordinarily am given bragging reason seldom have anything brag about now shiny new AMA National Record certificate adorns workshop wall first time eight years Last weekend set new record 13 mm 562 sec Category Ill Pennyplane doesnt quite have stature C-Gas record FAI Indoor record will starters anyhow wasnt fluke worked up grad ually getting increasingly better matches between motor prop starting off 10-mm first flight Duration isnt too bad itself model clearly superior previous also has 6-in chord model using same prop same rubber record model struggle get 8 mm No Non-Cents seems pretty good model wish knew guess have sort motherly feeling about Pennyplane pro posal make official AMA event accepted Free Flight Con test Board AMA real credit should go Fry Rodemsky invented event Dave Linstrum promoted VTO column Model Airplane Bob Meuser News several articles Chi cago Aeronuts sponsored several Nats guys like Dennis Jaecks Clarence Mather Charlie Sotich Larry Cailliau others pointed way toward better performance record flight will stand up good company quite best has ever done Pennyplane John Kukon experienced Indoor flier has done over 16 mm rather sophis ticated biplane Im sure record proves anything does Left No Non-Cents drawing belowl Pennyplane Bob Meuser four min utes better previous job used same prop rubberand chord Right Jim Lewis takes time out smile winding Mulvihill-winning Unlimited rubber model Martin Richardson chors Photo Jim Scarborough r PENNYPLANE3 NO NON-CENTS CATEGORY Ill OPEN RECOD 13m562s JAN 7 BOB ME&JSC 7 3 lB 9 K xx [5 /8 WEAL Jim Zewiss 7irts-wjnni9 rubber-power nicer 3 2 7% londeroPiS thr&rjrcPt2sSgmif 6 &zysun 8 serapid edtv SAR*e ifkr a~emb4 40 Model Aviation PROP I6jD FORMEDON iT R BLOCI BLADES ROTATED TO 32 P h Any bumble-thumbed outdoor-style free fighter can achieve modicum success have whale lot fun boot Indoor modeling via Pennyplane route having go ultra-light micro film models giant leap encore think might try FAI stuff Tremble fear Jim Richmond Jim Lewis Story So Jim Lewis ask Until recently might have legitimate question Jim has out modeling decade recently made comeback what comeback First place two top rubber-power events 1974 Nats Unlimited Rubber Coupe dHiver first places Hand-Launch Glider Rubber-Power Speed Rub ber Power Helicopter third A/2 Towline glider chaser Jim priv ileged own Mulvihill Dick Black Memorial Trophies year addition new Donald Lockwood Trophy Rubber Speed Jim got lot help George Perryman has within spittin distance N4ulvihill Trophy times anyone else would care count Mike Bailey another Georges proteges won Mulvihill 1969 Willow Grove Nats run-down some Jims hardware Unlimited Rubber George Perrymans Little Daddy de sign Sixteen strands Pirelli OldTimer Models Jims model won four contests entered up 1975 Nats Coupe dHiver Frank Per kins Checkmate design minor modifications wing pylon An alumi num motor tube rolled sheet-balsa boom used Hand-Launch Glider Mathis Flash M P kit now manufactured American Balsa Corp tips installed backwards give sweepback Rubber-Power Heli copter Essentially over-grown Jim Walker Ceiling Walker 30-in motor tube pair 18-inch counterrotating props end Power four strands 1/8 Pirelli A/2 Towline Glider Don Chanceys Poacher de sign same Don used earn spot US Nordic team Circle tow used Rubber Power Speed Jim put gether information published about models entered 1973 Nats mixed well distilled 18-in model using 5 Kaysun plastic prop Jims speed standing start over 200-ft course shade over 50 mph bit tissue rubber balsa thats moving. Hank Coles Prop Stop invention folding prop rubber-powered models thirties required device stop prop certain position motor wound down decades simple tensioner device uni versal solution As tension motor decreased spring pushed prop shaft forward until projection prop shaft engaged peg protruding 2ow torque Acok enbayeS catch c/ears 74bhtorue 93 Bob Whites version Hank Coles prop-stop per Rubber motor torsion forces hooked arm outward torsion relaxes spring forces hooked arm inward engage wire loop block Meuser pic 2 1 1 ______ 25 1 14 back nose block came Montreal stop torque motor holds pin prop hub retracted position until torque decreases point spring pops pin hole front nose block satisfactory solution didnt satisfy Hank Cole thing Montreal stop doesnt fit Hanks style Hank likes make things music wire So developed alternative Bob White saw Coles design recognized solution problem Bob tried Montreal stop abandoned favor old-fashioned tensioner Montreal stop failed function after Bobs Wakefield stuck its nose sand grain two got becontinued page 99 Vae Parsons caraput {idr autcfstaA ~~1 8 5ee te%t addriona1Jtaits May1976 41 Dave Parsons M onokote-covered catapult glid er features Tatone timer operated auto-stab chase away zoomies K1126515 --2 4 FF Duration/MeuserPaint Mixer Mixing heavily pigcontinued page 41mented paints tiny bottles use ful scale modeling lot easier let machine job make mixer has shaking action just like big ones paint stores tween some closely fitting sliding parts clearances can generous Hanks design parts rotate rather slide jamming unlikely photos show works Note torsion spring tending draw stop arm inward torque spring must adjusted arm re leased rubber motor has ex pended its energy has gone completely slack Catapult Capers Dave Parsons Kinesis isnt sort catapult glider would build goal maximize win po tential minimizing expenditure effort about complex cata pult glider can Its noteworthy feature timer-operated autostab string tied Daves wrist pulls pin starts timer glider released During climb phase flight trailing edge stabilizer held down model goes up rails showing no tendency zoom loop Just launching energy dissipated timer actuates autostab mechanism permitting trailing edge stab pop up about 1/16 its glide position mechanism identical Dave has used FAI Power models See Daves Cathexis featured No vember issue Wing ribs rudder fuselage sides 1/16 sheet balsa Stabilizer carved 3/16 sheet front part wing made 3/8 sheet tapered provide constant 6%-thick section Lead ing edge reinforced spruce Top bottom fuselage hard 1/8 X 3/8 inch strips Additional spruce strips used reinforce nose section provide anchor launching hook Wing covered Monokote CG 65% root chord back lead ing edge total weight including Tatone /2A timer 3 oz about one-third weight its some what larger precursor Cut piece sheet metalany metal will do--roughly 030 X x 8 Obtain small DC electric motor power sourcebatteries HO train trans former Secure eccentric weight motor shaft pressing soldering cementing epoxy Tape motor onto end metal strip Secure paint bottle opposite side metal strip using tape rubber bands Clamp opposite end metal strip vise Turn juice behold wonders nature device can tuned maximum shake varying length sheet metal extends beyond vise good source small electric motors Edmond Scientific Co Barrington NJ 08007 Theyll delighted send catalog try hobby shop Professor Perrymans Big Bird George Perryman has won Old-Timer Rubber event King Orange Internats seven times row Nats five years straight Latest stable cludes Jabberwock Korda Detherma lizer California Champ Lanzo 1940 Stick model Plans availMay1976 99 Mousers Magic Mixer can mix paint faster can shake stick Great tiny bottles Uses small DC motor eccentric weight taped end metal strip held vise Two George Perrymans pride joys granddaughter Stephanie 40 Lanzo Stick 6 Stephanie Nats winner Rozelle pic Scearman C 3 B2Z2 GENERALThE 1929 Aristocrat FOR-11Ez2"9191]FOR RAAIO CONTROL AR FREE FLIGHTsRIpENraIflWINGSPAN FOR RUBBER COO SIRREANT FOR SC WINGSPAN 000 POWER9WGEAIATE SARA CONTROL UP 00 TOREE ORANNELSONE OF TOE GOLOEN EROS GREATEST AIRCRAFTAGASOELISOTTO SUILA ARISTORT UAEER BEFORE WARTN________S 1290SOAR AMERICAN BELLANCA S Lpockpt P/PER Cl/S SPAN OAR POWER FOR O5NR N CONTROL UP TO TORtESC WINGSPAN 020 POWER FOR FREE ..A SNELS TRUE CLANSIC AIR FROG ORE SOLOEN ERGFLIGhT OR RASIA CONTROL PL001OWIL SC WINGSPANAW 5200 FALSE ANN SaGR CANTROL UNITS CAR BE PLOWS FREE FLIGRT ON POWER OR ROBBERTTfN ON AIRECT OROESS ADO lOT FOR PACEINS ASS BESS ASE CA REOIOESTS ADO AT TAXFiN t.iY1tiJEL YOUR LOCAL HOBBY DEALER 10643ASHBY FLFAIRFAX VA22030 DONT POWER CYTM THE ORIGINAL IN PLANE BATTERY MONITOR Now fly confidence glance POWER-CyT instantly know charge condition battery pack Three times brighter other POWER-CyT__________________________________ goes off batteries 10 20 minute safety margin Detects bad cells Easy installation Weighs Va oz Guaranteed 1 year____________________ CYI4 INDUSTRIES 611 S East Ave. Oak Park II 60304 312 848-8555 Dealer Distributor inquiries invited FF Duration continued able Model Builder magazine plan no 1174OT $350 Stick Em patterns cost additional $195 Address Box 4336 Santa Ana Ca 92702 hunch might story hind big Lanzo machine asked George about wasnt wrong Old-Timer Rubber models have built Lanzo competi tive over 3 sq ft wing stab area weight 7 oz flies al well modern birds first met Chet Lanzo 1941 Nats Chicago 21-year-old Chet boyhood idol model ings all-time greats Chet took interest showed adjusted model asked about chased model him test flights great enthusi asm can remember wonder long motor runs fondly remember Chet Lanzo fine gentleman helped little country boy Georgia learn some fine points modeling Wilders Winder advice experts occasional opportunity borrow good winder made clear smooth-running winder great help putting maximum turns rubber motor breaking propensity los ing track number turns made clear next winder must have built-in turns counter After pondering problem designing building own specifications great relief discover could such winder paltry $2450 plus $100 postage handling charge Bob Wilder 2010 Boston Irving TX 75061 Bobs winder has 20-to-i ratio little higher normal door microfilm model type winder very high some other uses intended itindoor scale example winder having mini mum friction high ratio ad vantage gives stronger feel motor torque Wilder winder sports double reduction wide-face Nylon gears precision ball bearing output shaft ensure smooth run_PATENT PE ning under load winders seem smooth operated load nearly jam under tension fully wound motor counter simple dial-and-pointer affair reading 500 turns revolution pointer increments S turns going put say 1650 turns motor will have pay little atten tion avoid putting 1150 2150 stead counter re-set simply push ing pointer back zero position CL Speed/Bussell continued page 30 Close will find line drawing showing typical wing planform lifting section ing root symmetrical tips same wing planform symmetrical section sym metrical both root tip sec tion drawings airfoils drawn oversize show properly designed airfoil high point 33% back leading edge both airfoils Indoor microfilm type winder Bob Wilder see textl smooth running includes turn counter 20-to1 ratio sells $2450 unit intended serviced owner disassembly attempted gears shafts spacers washers tend fly over workshop Reassembly trial-and-error method enough make strong man cry servicing ever necessary highly unlikely sug gest send winder back Bob Wilder address 4200 Gregory St Oak land Calif 94619 Wing Stab Control Surfaces As Formula 40 Speed need least 90 sq in wing want come off ground hurry can use much 125 sq Stab area should no less 35% wing area no 50% same use same size elevator Class B B Proto Formula 40 Ships 3 long will give plenty control movement Speed flying BA--1TYPICAL WING PLANFORM e B LIFTING ROOT SECTION A-A TIP SECTION B-B 100 Model Aviation rSTANDARD. 1195 4BV DELUXE 95 win pigsi SYMMETRICAL
Edition: Model Aviation - 1976/05
Page Numbers: 40, 41, 99, 100
Free Flight TA-DAHHH Ordinarily am given bragging reason seldom have anything brag about now shiny new AMA National Record certificate adorns workshop wall first time eight years Last weekend set new record 13 mm 562 sec Category Ill Pennyplane doesnt quite have stature C-Gas record FAI Indoor record will starters anyhow wasnt fluke worked up grad ually getting increasingly better matches between motor prop starting off 10-mm first flight Duration isnt too bad itself model clearly superior previous also has 6-in chord model using same prop same rubber record model struggle get 8 mm No Non-Cents seems pretty good model wish knew guess have sort motherly feeling about Pennyplane pro posal make official AMA event accepted Free Flight Con test Board AMA real credit should go Fry Rodemsky invented event Dave Linstrum promoted VTO column Model Airplane Bob Meuser News several articles Chi cago Aeronuts sponsored several Nats guys like Dennis Jaecks Clarence Mather Charlie Sotich Larry Cailliau others pointed way toward better performance record flight will stand up good company quite best has ever done Pennyplane John Kukon experienced Indoor flier has done over 16 mm rather sophis ticated biplane Im sure record proves anything does Left No Non-Cents drawing belowl Pennyplane Bob Meuser four min utes better previous job used same prop rubberand chord Right Jim Lewis takes time out smile winding Mulvihill-winning Unlimited rubber model Martin Richardson chors Photo Jim Scarborough r PENNYPLANE3 NO NON-CENTS CATEGORY Ill OPEN RECOD 13m562s JAN 7 BOB ME&JSC 7 3 lB 9 K xx [5 /8 WEAL Jim Zewiss 7irts-wjnni9 rubber-power nicer 3 2 7% londeroPiS thr&rjrcPt2sSgmif 6 &zysun 8 serapid edtv SAR*e ifkr a~emb4 40 Model Aviation PROP I6jD FORMEDON iT R BLOCI BLADES ROTATED TO 32 P h Any bumble-thumbed outdoor-style free fighter can achieve modicum success have whale lot fun boot Indoor modeling via Pennyplane route having go ultra-light micro film models giant leap encore think might try FAI stuff Tremble fear Jim Richmond Jim Lewis Story So Jim Lewis ask Until recently might have legitimate question Jim has out modeling decade recently made comeback what comeback First place two top rubber-power events 1974 Nats Unlimited Rubber Coupe dHiver first places Hand-Launch Glider Rubber-Power Speed Rub ber Power Helicopter third A/2 Towline glider chaser Jim priv ileged own Mulvihill Dick Black Memorial Trophies year addition new Donald Lockwood Trophy Rubber Speed Jim got lot help George Perryman has within spittin distance N4ulvihill Trophy times anyone else would care count Mike Bailey another Georges proteges won Mulvihill 1969 Willow Grove Nats run-down some Jims hardware Unlimited Rubber George Perrymans Little Daddy de sign Sixteen strands Pirelli OldTimer Models Jims model won four contests entered up 1975 Nats Coupe dHiver Frank Per kins Checkmate design minor modifications wing pylon An alumi num motor tube rolled sheet-balsa boom used Hand-Launch Glider Mathis Flash M P kit now manufactured American Balsa Corp tips installed backwards give sweepback Rubber-Power Heli copter Essentially over-grown Jim Walker Ceiling Walker 30-in motor tube pair 18-inch counterrotating props end Power four strands 1/8 Pirelli A/2 Towline Glider Don Chanceys Poacher de sign same Don used earn spot US Nordic team Circle tow used Rubber Power Speed Jim put gether information published about models entered 1973 Nats mixed well distilled 18-in model using 5 Kaysun plastic prop Jims speed standing start over 200-ft course shade over 50 mph bit tissue rubber balsa thats moving. Hank Coles Prop Stop invention folding prop rubber-powered models thirties required device stop prop certain position motor wound down decades simple tensioner device uni versal solution As tension motor decreased spring pushed prop shaft forward until projection prop shaft engaged peg protruding 2ow torque Acok enbayeS catch c/ears 74bhtorue 93 Bob Whites version Hank Coles prop-stop per Rubber motor torsion forces hooked arm outward torsion relaxes spring forces hooked arm inward engage wire loop block Meuser pic 2 1 1 ______ 25 1 14 back nose block came Montreal stop torque motor holds pin prop hub retracted position until torque decreases point spring pops pin hole front nose block satisfactory solution didnt satisfy Hank Cole thing Montreal stop doesnt fit Hanks style Hank likes make things music wire So developed alternative Bob White saw Coles design recognized solution problem Bob tried Montreal stop abandoned favor old-fashioned tensioner Montreal stop failed function after Bobs Wakefield stuck its nose sand grain two got becontinued page 99 Vae Parsons caraput {idr autcfstaA ~~1 8 5ee te%t addriona1Jtaits May1976 41 Dave Parsons M onokote-covered catapult glid er features Tatone timer operated auto-stab chase away zoomies K1126515 --2 4 FF Duration/MeuserPaint Mixer Mixing heavily pigcontinued page 41mented paints tiny bottles use ful scale modeling lot easier let machine job make mixer has shaking action just like big ones paint stores tween some closely fitting sliding parts clearances can generous Hanks design parts rotate rather slide jamming unlikely photos show works Note torsion spring tending draw stop arm inward torque spring must adjusted arm re leased rubber motor has ex pended its energy has gone completely slack Catapult Capers Dave Parsons Kinesis isnt sort catapult glider would build goal maximize win po tential minimizing expenditure effort about complex cata pult glider can Its noteworthy feature timer-operated autostab string tied Daves wrist pulls pin starts timer glider released During climb phase flight trailing edge stabilizer held down model goes up rails showing no tendency zoom loop Just launching energy dissipated timer actuates autostab mechanism permitting trailing edge stab pop up about 1/16 its glide position mechanism identical Dave has used FAI Power models See Daves Cathexis featured No vember issue Wing ribs rudder fuselage sides 1/16 sheet balsa Stabilizer carved 3/16 sheet front part wing made 3/8 sheet tapered provide constant 6%-thick section Lead ing edge reinforced spruce Top bottom fuselage hard 1/8 X 3/8 inch strips Additional spruce strips used reinforce nose section provide anchor launching hook Wing covered Monokote CG 65% root chord back lead ing edge total weight including Tatone /2A timer 3 oz about one-third weight its some what larger precursor Cut piece sheet metalany metal will do--roughly 030 X x 8 Obtain small DC electric motor power sourcebatteries HO train trans former Secure eccentric weight motor shaft pressing soldering cementing epoxy Tape motor onto end metal strip Secure paint bottle opposite side metal strip using tape rubber bands Clamp opposite end metal strip vise Turn juice behold wonders nature device can tuned maximum shake varying length sheet metal extends beyond vise good source small electric motors Edmond Scientific Co Barrington NJ 08007 Theyll delighted send catalog try hobby shop Professor Perrymans Big Bird George Perryman has won Old-Timer Rubber event King Orange Internats seven times row Nats five years straight Latest stable cludes Jabberwock Korda Detherma lizer California Champ Lanzo 1940 Stick model Plans availMay1976 99 Mousers Magic Mixer can mix paint faster can shake stick Great tiny bottles Uses small DC motor eccentric weight taped end metal strip held vise Two George Perrymans pride joys granddaughter Stephanie 40 Lanzo Stick 6 Stephanie Nats winner Rozelle pic Scearman C 3 B2Z2 GENERALThE 1929 Aristocrat FOR-11Ez2"9191]FOR RAAIO CONTROL AR FREE FLIGHTsRIpENraIflWINGSPAN FOR RUBBER COO SIRREANT FOR SC WINGSPAN 000 POWER9WGEAIATE SARA CONTROL UP 00 TOREE ORANNELSONE OF TOE GOLOEN EROS GREATEST AIRCRAFTAGASOELISOTTO SUILA ARISTORT UAEER BEFORE WARTN________S 1290SOAR AMERICAN BELLANCA S Lpockpt P/PER Cl/S SPAN OAR POWER FOR O5NR N CONTROL UP TO TORtESC WINGSPAN 020 POWER FOR FREE ..A SNELS TRUE CLANSIC AIR FROG ORE SOLOEN ERGFLIGhT OR RASIA CONTROL PL001OWIL SC WINGSPANAW 5200 FALSE ANN SaGR CANTROL UNITS CAR BE PLOWS FREE FLIGRT ON POWER OR ROBBERTTfN ON AIRECT OROESS ADO lOT FOR PACEINS ASS BESS ASE CA REOIOESTS ADO AT TAXFiN t.iY1tiJEL YOUR LOCAL HOBBY DEALER 10643ASHBY FLFAIRFAX VA22030 DONT POWER CYTM THE ORIGINAL IN PLANE BATTERY MONITOR Now fly confidence glance POWER-CyT instantly know charge condition battery pack Three times brighter other POWER-CyT__________________________________ goes off batteries 10 20 minute safety margin Detects bad cells Easy installation Weighs Va oz Guaranteed 1 year____________________ CYI4 INDUSTRIES 611 S East Ave. Oak Park II 60304 312 848-8555 Dealer Distributor inquiries invited FF Duration continued able Model Builder magazine plan no 1174OT $350 Stick Em patterns cost additional $195 Address Box 4336 Santa Ana Ca 92702 hunch might story hind big Lanzo machine asked George about wasnt wrong Old-Timer Rubber models have built Lanzo competi tive over 3 sq ft wing stab area weight 7 oz flies al well modern birds first met Chet Lanzo 1941 Nats Chicago 21-year-old Chet boyhood idol model ings all-time greats Chet took interest showed adjusted model asked about chased model him test flights great enthusi asm can remember wonder long motor runs fondly remember Chet Lanzo fine gentleman helped little country boy Georgia learn some fine points modeling Wilders Winder advice experts occasional opportunity borrow good winder made clear smooth-running winder great help putting maximum turns rubber motor breaking propensity los ing track number turns made clear next winder must have built-in turns counter After pondering problem designing building own specifications great relief discover could such winder paltry $2450 plus $100 postage handling charge Bob Wilder 2010 Boston Irving TX 75061 Bobs winder has 20-to-i ratio little higher normal door microfilm model type winder very high some other uses intended itindoor scale example winder having mini mum friction high ratio ad vantage gives stronger feel motor torque Wilder winder sports double reduction wide-face Nylon gears precision ball bearing output shaft ensure smooth run_PATENT PE ning under load winders seem smooth operated load nearly jam under tension fully wound motor counter simple dial-and-pointer affair reading 500 turns revolution pointer increments S turns going put say 1650 turns motor will have pay little atten tion avoid putting 1150 2150 stead counter re-set simply push ing pointer back zero position CL Speed/Bussell continued page 30 Close will find line drawing showing typical wing planform lifting section ing root symmetrical tips same wing planform symmetrical section sym metrical both root tip sec tion drawings airfoils drawn oversize show properly designed airfoil high point 33% back leading edge both airfoils Indoor microfilm type winder Bob Wilder see textl smooth running includes turn counter 20-to1 ratio sells $2450 unit intended serviced owner disassembly attempted gears shafts spacers washers tend fly over workshop Reassembly trial-and-error method enough make strong man cry servicing ever necessary highly unlikely sug gest send winder back Bob Wilder address 4200 Gregory St Oak land Calif 94619 Wing Stab Control Surfaces As Formula 40 Speed need least 90 sq in wing want come off ground hurry can use much 125 sq Stab area should no less 35% wing area no 50% same use same size elevator Class B B Proto Formula 40 Ships 3 long will give plenty control movement Speed flying BA--1TYPICAL WING PLANFORM e B LIFTING ROOT SECTION A-A TIP SECTION B-B 100 Model Aviation rSTANDARD. 1195 4BV DELUXE 95 win pigsi SYMMETRICAL
Edition: Model Aviation - 1976/05
Page Numbers: 40, 41, 99, 100
Free Flight TA-DAHHH Ordinarily am given bragging reason seldom have anything brag about now shiny new AMA National Record certificate adorns workshop wall first time eight years Last weekend set new record 13 mm 562 sec Category Ill Pennyplane doesnt quite have stature C-Gas record FAI Indoor record will starters anyhow wasnt fluke worked up grad ually getting increasingly better matches between motor prop starting off 10-mm first flight Duration isnt too bad itself model clearly superior previous also has 6-in chord model using same prop same rubber record model struggle get 8 mm No Non-Cents seems pretty good model wish knew guess have sort motherly feeling about Pennyplane pro posal make official AMA event accepted Free Flight Con test Board AMA real credit should go Fry Rodemsky invented event Dave Linstrum promoted VTO column Model Airplane Bob Meuser News several articles Chi cago Aeronuts sponsored several Nats guys like Dennis Jaecks Clarence Mather Charlie Sotich Larry Cailliau others pointed way toward better performance record flight will stand up good company quite best has ever done Pennyplane John Kukon experienced Indoor flier has done over 16 mm rather sophis ticated biplane Im sure record proves anything does Left No Non-Cents drawing belowl Pennyplane Bob Meuser four min utes better previous job used same prop rubberand chord Right Jim Lewis takes time out smile winding Mulvihill-winning Unlimited rubber model Martin Richardson chors Photo Jim Scarborough r PENNYPLANE3 NO NON-CENTS CATEGORY Ill OPEN RECOD 13m562s JAN 7 BOB ME&JSC 7 3 lB 9 K xx [5 /8 WEAL Jim Zewiss 7irts-wjnni9 rubber-power nicer 3 2 7% londeroPiS thr&rjrcPt2sSgmif 6 &zysun 8 serapid edtv SAR*e ifkr a~emb4 40 Model Aviation PROP I6jD FORMEDON iT R BLOCI BLADES ROTATED TO 32 P h Any bumble-thumbed outdoor-style free fighter can achieve modicum success have whale lot fun boot Indoor modeling via Pennyplane route having go ultra-light micro film models giant leap encore think might try FAI stuff Tremble fear Jim Richmond Jim Lewis Story So Jim Lewis ask Until recently might have legitimate question Jim has out modeling decade recently made comeback what comeback First place two top rubber-power events 1974 Nats Unlimited Rubber Coupe dHiver first places Hand-Launch Glider Rubber-Power Speed Rub ber Power Helicopter third A/2 Towline glider chaser Jim priv ileged own Mulvihill Dick Black Memorial Trophies year addition new Donald Lockwood Trophy Rubber Speed Jim got lot help George Perryman has within spittin distance N4ulvihill Trophy times anyone else would care count Mike Bailey another Georges proteges won Mulvihill 1969 Willow Grove Nats run-down some Jims hardware Unlimited Rubber George Perrymans Little Daddy de sign Sixteen strands Pirelli OldTimer Models Jims model won four contests entered up 1975 Nats Coupe dHiver Frank Per kins Checkmate design minor modifications wing pylon An alumi num motor tube rolled sheet-balsa boom used Hand-Launch Glider Mathis Flash M P kit now manufactured American Balsa Corp tips installed backwards give sweepback Rubber-Power Heli copter Essentially over-grown Jim Walker Ceiling Walker 30-in motor tube pair 18-inch counterrotating props end Power four strands 1/8 Pirelli A/2 Towline Glider Don Chanceys Poacher de sign same Don used earn spot US Nordic team Circle tow used Rubber Power Speed Jim put gether information published about models entered 1973 Nats mixed well distilled 18-in model using 5 Kaysun plastic prop Jims speed standing start over 200-ft course shade over 50 mph bit tissue rubber balsa thats moving. Hank Coles Prop Stop invention folding prop rubber-powered models thirties required device stop prop certain position motor wound down decades simple tensioner device uni versal solution As tension motor decreased spring pushed prop shaft forward until projection prop shaft engaged peg protruding 2ow torque Acok enbayeS catch c/ears 74bhtorue 93 Bob Whites version Hank Coles prop-stop per Rubber motor torsion forces hooked arm outward torsion relaxes spring forces hooked arm inward engage wire loop block Meuser pic 2 1 1 ______ 25 1 14 back nose block came Montreal stop torque motor holds pin prop hub retracted position until torque decreases point spring pops pin hole front nose block satisfactory solution didnt satisfy Hank Cole thing Montreal stop doesnt fit Hanks style Hank likes make things music wire So developed alternative Bob White saw Coles design recognized solution problem Bob tried Montreal stop abandoned favor old-fashioned tensioner Montreal stop failed function after Bobs Wakefield stuck its nose sand grain two got becontinued page 99 Vae Parsons caraput {idr autcfstaA ~~1 8 5ee te%t addriona1Jtaits May1976 41 Dave Parsons M onokote-covered catapult glid er features Tatone timer operated auto-stab chase away zoomies K1126515 --2 4 FF Duration/MeuserPaint Mixer Mixing heavily pigcontinued page 41mented paints tiny bottles use ful scale modeling lot easier let machine job make mixer has shaking action just like big ones paint stores tween some closely fitting sliding parts clearances can generous Hanks design parts rotate rather slide jamming unlikely photos show works Note torsion spring tending draw stop arm inward torque spring must adjusted arm re leased rubber motor has ex pended its energy has gone completely slack Catapult Capers Dave Parsons Kinesis isnt sort catapult glider would build goal maximize win po tential minimizing expenditure effort about complex cata pult glider can Its noteworthy feature timer-operated autostab string tied Daves wrist pulls pin starts timer glider released During climb phase flight trailing edge stabilizer held down model goes up rails showing no tendency zoom loop Just launching energy dissipated timer actuates autostab mechanism permitting trailing edge stab pop up about 1/16 its glide position mechanism identical Dave has used FAI Power models See Daves Cathexis featured No vember issue Wing ribs rudder fuselage sides 1/16 sheet balsa Stabilizer carved 3/16 sheet front part wing made 3/8 sheet tapered provide constant 6%-thick section Lead ing edge reinforced spruce Top bottom fuselage hard 1/8 X 3/8 inch strips Additional spruce strips used reinforce nose section provide anchor launching hook Wing covered Monokote CG 65% root chord back lead ing edge total weight including Tatone /2A timer 3 oz about one-third weight its some what larger precursor Cut piece sheet metalany metal will do--roughly 030 X x 8 Obtain small DC electric motor power sourcebatteries HO train trans former Secure eccentric weight motor shaft pressing soldering cementing epoxy Tape motor onto end metal strip Secure paint bottle opposite side metal strip using tape rubber bands Clamp opposite end metal strip vise Turn juice behold wonders nature device can tuned maximum shake varying length sheet metal extends beyond vise good source small electric motors Edmond Scientific Co Barrington NJ 08007 Theyll delighted send catalog try hobby shop Professor Perrymans Big Bird George Perryman has won Old-Timer Rubber event King Orange Internats seven times row Nats five years straight Latest stable cludes Jabberwock Korda Detherma lizer California Champ Lanzo 1940 Stick model Plans availMay1976 99 Mousers Magic Mixer can mix paint faster can shake stick Great tiny bottles Uses small DC motor eccentric weight taped end metal strip held vise Two George Perrymans pride joys granddaughter Stephanie 40 Lanzo Stick 6 Stephanie Nats winner Rozelle pic Scearman C 3 B2Z2 GENERALThE 1929 Aristocrat FOR-11Ez2"9191]FOR RAAIO CONTROL AR FREE FLIGHTsRIpENraIflWINGSPAN FOR RUBBER COO SIRREANT FOR SC WINGSPAN 000 POWER9WGEAIATE SARA CONTROL UP 00 TOREE ORANNELSONE OF TOE GOLOEN EROS GREATEST AIRCRAFTAGASOELISOTTO SUILA ARISTORT UAEER BEFORE WARTN________S 1290SOAR AMERICAN BELLANCA S Lpockpt P/PER Cl/S SPAN OAR POWER FOR O5NR N CONTROL UP TO TORtESC WINGSPAN 020 POWER FOR FREE ..A SNELS TRUE CLANSIC AIR FROG ORE SOLOEN ERGFLIGhT OR RASIA CONTROL PL001OWIL SC WINGSPANAW 5200 FALSE ANN SaGR CANTROL UNITS CAR BE PLOWS FREE FLIGRT ON POWER OR ROBBERTTfN ON AIRECT OROESS ADO lOT FOR PACEINS ASS BESS ASE CA REOIOESTS ADO AT TAXFiN t.iY1tiJEL YOUR LOCAL HOBBY DEALER 10643ASHBY FLFAIRFAX VA22030 DONT POWER CYTM THE ORIGINAL IN PLANE BATTERY MONITOR Now fly confidence glance POWER-CyT instantly know charge condition battery pack Three times brighter other POWER-CyT__________________________________ goes off batteries 10 20 minute safety margin Detects bad cells Easy installation Weighs Va oz Guaranteed 1 year____________________ CYI4 INDUSTRIES 611 S East Ave. Oak Park II 60304 312 848-8555 Dealer Distributor inquiries invited FF Duration continued able Model Builder magazine plan no 1174OT $350 Stick Em patterns cost additional $195 Address Box 4336 Santa Ana Ca 92702 hunch might story hind big Lanzo machine asked George about wasnt wrong Old-Timer Rubber models have built Lanzo competi tive over 3 sq ft wing stab area weight 7 oz flies al well modern birds first met Chet Lanzo 1941 Nats Chicago 21-year-old Chet boyhood idol model ings all-time greats Chet took interest showed adjusted model asked about chased model him test flights great enthusi asm can remember wonder long motor runs fondly remember Chet Lanzo fine gentleman helped little country boy Georgia learn some fine points modeling Wilders Winder advice experts occasional opportunity borrow good winder made clear smooth-running winder great help putting maximum turns rubber motor breaking propensity los ing track number turns made clear next winder must have built-in turns counter After pondering problem designing building own specifications great relief discover could such winder paltry $2450 plus $100 postage handling charge Bob Wilder 2010 Boston Irving TX 75061 Bobs winder has 20-to-i ratio little higher normal door microfilm model type winder very high some other uses intended itindoor scale example winder having mini mum friction high ratio ad vantage gives stronger feel motor torque Wilder winder sports double reduction wide-face Nylon gears precision ball bearing output shaft ensure smooth run_PATENT PE ning under load winders seem smooth operated load nearly jam under tension fully wound motor counter simple dial-and-pointer affair reading 500 turns revolution pointer increments S turns going put say 1650 turns motor will have pay little atten tion avoid putting 1150 2150 stead counter re-set simply push ing pointer back zero position CL Speed/Bussell continued page 30 Close will find line drawing showing typical wing planform lifting section ing root symmetrical tips same wing planform symmetrical section sym metrical both root tip sec tion drawings airfoils drawn oversize show properly designed airfoil high point 33% back leading edge both airfoils Indoor microfilm type winder Bob Wilder see textl smooth running includes turn counter 20-to1 ratio sells $2450 unit intended serviced owner disassembly attempted gears shafts spacers washers tend fly over workshop Reassembly trial-and-error method enough make strong man cry servicing ever necessary highly unlikely sug gest send winder back Bob Wilder address 4200 Gregory St Oak land Calif 94619 Wing Stab Control Surfaces As Formula 40 Speed need least 90 sq in wing want come off ground hurry can use much 125 sq Stab area should no less 35% wing area no 50% same use same size elevator Class B B Proto Formula 40 Ships 3 long will give plenty control movement Speed flying BA--1TYPICAL WING PLANFORM e B LIFTING ROOT SECTION A-A TIP SECTION B-B 100 Model Aviation rSTANDARD. 1195 4BV DELUXE 95 win pigsi SYMMETRICAL
