CL Racing 0 Phil Shew GOODYEAR Qualifying times ranged low 247 Harris Family Team 2599 cut-off time Thats much better experts predicting represents close 15-second im provement over last year Banning mega phones 1978 did nothing slow things down Speeds bit good last year noticeable difference dramatic improvement reliability John Ballard won best finals Ive ever seen heat matched eventual first second place teams Gary Fentress pitted Ballard Bud pitted Doug flew Harris family final analysis heads-up piloting won out over flat-out speed Harris slightly better top end speed able pass once during tank Ballard used superior acceleration halflap kill gain ground start pit end less full lap ahead Ballard flying Rossi-powered Lil Quickie swinging Shadow Products 66 X 55 prop using 3 oz Dons rat tank claims larger tank has less variation fuel head between pits also gives 80-lap range leaves room quick pit correct bad setting So what does take competitive Goodyear hot runners turning 15s hitting 11-12 second pit stops translates darn good team work Equipment-wise its Rossis Glow Bee plugs either Kelley Willough Shadow Ballard prop trend seems toward internally connected lines cleaner planes design flying year Lil Quickie popu larized Stewart Willoughby design took 1st 5th used five out top 10 Plans available $200 copy Stewart G Willoughby 607 W Green St Bensenville IL 60106 anatomy winning flight Go 8 laps 175 seconds average air speed 154-155 seconds 8 laps pit 265/278/275 seconds race time 5459 Senior Goodyear Doug Harris com pletely out-muscled Bill Hughes went turn best Goodyear time Nats used Rossi-powered Buster set up internally connected lines Kelley Willoughby prop Glow Bee plug Dons 2-oz rat tank Tom Fluker took Junior third time virtually identical set up FAI Team Race US team England World Championships supposed off year Team Race As turned out seven teams actually flew participation low level competition excellent Willoughby/Oge team turned 359 fastest heat time ever recorded US Nats flying beautiful 437-gram Nelsonpowered all-balsa model turning high 17s Bob Oge handled pit work did outstanding job consider ing second day pitting diesel Gary Milo Wallace close behind flying Nelson-powered Magnum design team used one-way radio enabled pilot Gary give instruc tions pit man Milo tore up #1 plane second heat never did get back-up going finals Mogi/ 42 Model Aviation Steve Rece left John Wolfe turned Open time win Senior Rat Plane Swamp Rat using K&B 65 engine power Marshall Busby pull-tests Slow Rat entry son Chris looks Plane cele brated Nashville designs seemingly standard MA columnist Bill Lee right presents tirst place plaque Class II Mouse Lee Pardue Mouse II sponsored Greater Houston CL Modelers Assn unoffical event Tom Fluker won Junior Goodyear third time flew Wittman Buster internally connected lines Tom very active flier Ron Esman took fourth Open Slow Rat HP 36-powered original uses inboard tank fast fill automatic primer Jolly qualified third brand new Rossi powered original 100-lap heats used 116 venturi gave 37-lap range two-pit race 200-lap final switched 116 venturi four-stop race Willoughby/Oge sticking 33-34 lap set-up final shaped up battle speed vs pits Unfortunately Willoughby ran 164 laps leaving Mogi/Jolly finish alone Son racing team realized dream come true took first second Open Rat have qualified first second past two years couldnt get together finals last year 1978 another storytwo letter-perfect heats followed two perfect finals Dick few rat pilots country capable handling 150-mph rat Harold handles pitting al though appears very deliberate overall pit times equal better anyone field Lam berts flying own design called Continued page 100 November1978 43 Inside plane turned world class heat time interior view hI Quickie mast popular design Goodyear John Bal shows details Stewart Willoughbys immaculate all-balsa TR lards winning plane showing typical engine tank shut-off setup Measuring displacement John Ballards win ning Goodyear racer engine Vic Garner engine Rossi steel liner Walt Perkins warms up Nelson-powered Sha dow team racer very clean design aug mented centrifugally operated retract gear Nashville Rats used identical planes en gines tank setups take first second third Open Slow Rat Very consistent Ken Mogi left Jim Jolly father US team member Larry Jolly won FAI Team Race Ship features Vee-tail differential elevators shown strikingly photograph upen Hat winners L H Harold Lambert 1 Dick Lambert 12 Les Pardue 3 Lamberts Rat Harold Dick Lambert Father planethe Snakewas featured theJune 1977 issue ModelAviation GIANT T7 Scale VINTAGE WHEELS PILOTGOLDEN AGE WHEELS Typical wheels usedEnhance realism ofDisc-type wheels during World War andyour giant model thiswere used extensively through mid 1 930seasy-to-paint pilot moldedthe late 1 920s through Semi-pneumatic tires andfrom high-impact styrenethe 1930s Semi-pneumat brass-bushed wheels 6%Separate goggles in-ic tires brass-bushed diameter $1795 prcluded 4 tall $295wheels 6 diameter $1795 pr OTHER SIZES GNOME ENGINE CYLINDERS Gnome ratory engine among WHEELS AND PILOTS famous powerplants World War era Now ALSO AVAILABLE can make 1/4 size reproductions easily 181 PAWNEE STREET SAN MARCOS CALIPORNIA detailed high-impact styrene cylinders Approximately 3 tall$195 veer deoler wont supply orde direct adding 15% postage nod handling AIJ'wJSend 5O illestroted catalogDEPT MA 92069 semi-scale plane Stan Powell pre sented Roger Barrett Highest Placing Rookie Award finished tie eighth place first Nats Al though actual Walker trophy case time lost transit Dallas conclusion banquet came Smilin Bob Whitely presented first place Open trophy keys trophy case containing Walker Trophy Nats/Shew continued page 43 Snake using HP4ORRs power Editor Article plan Snake appeared June 1977 issue use 5-oz tank swing Bartels prop humidity Lake Charles didnt bother bitIts just like home Equipment-wise looks like several engines capable being competitive right hands Out top five first second HP4ORRs third K&B405 fourth went K&B65 Max 405R finished fifth have poten tial trick extract enough power go fast slipping self destruct mode anatomy winning flight Proto 185 seconds airspeed 122-124 seconds pit times 250/252/255 seconds race time 451 Senior Rat John Wolf Chris Busby terrific finalboth turned Open class times John teamed up Steve Rece won K&B65powered Swamp Rat Theyve flying together about three years dis played some smoothst team work attheNats juniors flying profile rats much surprise least contestant showed up processing pan rat race time converted profile just wasnt enough time get sorted out Tom Fluker won ST G21-40-powered Quickie Rat Toby Busby took time out skateboarding give Tom run money flying Max 405R-powered pro file patterned after Nashville fast rat Slow Rat Senior Slow Rat run off day before Open promised pre view better things come Nash ville Rats have completely dominated event past three years body country out beat potential challengers year Miller/Hoffman team Larry Hoffman senior put super race record what looked unbeatable time 5432 sat back see what Chris Busby could Chris broke prop first pit withdrew later flew traffic another competitor showed Texas boys still fly Slow Rat Nashville Needless say turn events precipitated flurry activity practice circles evening Junior Slow Rat Bob Tony Smedly won Tune/Hill OS Max Bob Cat design using Glass werks 8X7 rat prop burning 10% nitro fuel OS behaved perfectly giving four-flip race last minute effort extract available rpm took its toll number Open class teams including Miller/Hoff man blew connecting rod best K&B58 Harris family developed swelled piston Max Several others just couldnt get equip ment perform time Open quali fying got underway field reduced 18 Paul Tune Larry Hill Marshall Busby better known Nashville Rats wasted no time establishing superi ority qualified 1 2 3 six virtu ally identical 70-lap heats 240s finals same storyconsistent 10-second pit stops 120 mph air speed slowest heat sub 540 claim capable getting 520s flying foam wing ver sion Nashville Rat design powered Tune/Hill OS Max engines swing ing Glasswerks 9X7 Slow Rat props prop worked up give 18500-19000 rpm ground used chickenhopper tank set-up mechanical fast fill valve main tank streamlined faired leading edge inboard wing chicken hopper small rectangular tank located directly behind venturi Flexible fuel line connects main tank chicken-hopper houses uniflow vent fuel pickup line Plans Nashville Rat engines spare parts available Tune/ Hill Racing Engines Box 706 Franklin TN 37064 anatomy winning flight Proto 210 seconds lap times 148/150/ 150 seconds pit times 247/247/243 seconds race time 53375 Class II Mouse Greater Houston Control Line Modelers Association spon sored Class II Mouse informal event Lake Charles Bill Lee organized officiated event little help other Houston area modelers Turn-out little disappointing did enter good time fact Mouse Racing seems offer maximum enjoyment racing dollar favorite pit man Les Pardue won Kustom Kraftmanship left-hand TD 049 Lil Tiger used own graphite-fiber prop Glow Bee sport plug 50% nitro fuel simple uniflow tank set-up scale racer used two-wheel gear quite bit larger planes designed rules Obviously serious disadvantage Joe Klauss Mr l/2A current chairman racing advisory committee second nicely finished rat-style racer 100 ModelAviation BY POPULAR DEMAND winning Rat setup An HP engine Bee plug Bartels prop dry vent fuel tank Weve Got Lot SHOUT ABOUT elliptical surfaces also used left-hand TD 049 ran pressure conclusion think owe Linda Wheeler Vic Garner round ap plause job well done personal thanks Linda Vic running racing events lap counters timers helping make happen N ats/G retz continued page 45 Zlin 526 Akrobat Akrobat posted its third NATS win four years com bination highest static 405 flight 218 scores field equipped Webra 61 operating flaps retractable landing gear engine cut off operated electronically through standard two control lines second place Ken Longs Japanese Betty G4M2 bomber probably popular flight performer twinengined Betty launched belly-mounted Kamikaze dive bomber released three paratroopers left realistic smoke trail flight did smooth touch-and-go taxi maneuvers Ken says five differ ent kinds droppable stores can re leased bomb bay Betty full-size ship model 3/4 ale 63 span Enya 19s power weighs 5 pounds Don Hollfelders outstanding OS 25powered 40 span Great Lakes 2T-lA-2 SUPERSTAR OF STARTERS Sales zooming past 100000 starter thats turned whole world Has higher torque & RPMs heavy duty long life motor instant-on strip switch safety hand guard 2-year guarantee bested Jeff Perezs green white Piper Twin Commanche third point final round flying Also en tered Precision Scale Bob Balduss huge 60-powered Spirit St Louis model inspiring watch fly especially Bob piloting handles very realistically thing missing Lindys face leaning out window Spirit cruised around circle Open Sport Scale produced some very tight competition first three places static scores within five points other Jeff Perez Dave Falkenhagen Mike Gretz took battle flight line Last years NATS Sport Scale Champion Jeffrey Perez held high static score 93 super-looking Piper Twin Commanche Lest seem confusing Jeff actually two Twin Commanches painted identically Sport Scale Precision Close behind Falkenhagens Clipped Wing Cub Gretzs Fairchild PT-19 tied 88 static points PT-19 went up first posted 93 flight score re mained highest day set solidly top After two smooth flights Clipped Wing Cub appeared have second place clinched Perez having trouble getting complete flight ever last attempt last flight day Jeff Commanche put together slip second place move Cub third Mark Bauers gor geous red white Pitts Special Ed Pitmans realistic Stinson Reliant rounded out top five places Open Sport Scale still appears Precision Scale larger mechanical option equipped retracts flaps bombs etc models posting best flight scores Simple subject models cant fill out complete flight plan seem have herent disadvantage under current Pre cision Scale rules Perhaps need come up flight options listed rule book within capabil ities scale subjects already case AMA CL Sport Scale FAT Scale compared Dayton Chicago Oshkosh NATS number controlline scale contestants Lake Charles NATS typically low Maybe something idea colder winters make scale models Notable absence Lake Charles year three current members FAT CL Scale Team England same time NATS past standouts like Ernie Violett Bill Harney Ralph Cathy Burnstine Mike Stott Plan now attend next year wherever NATS held wont regret Its unbelievably enjoyable entertaining experiencewin lose Good people make good times scale people among best writing advertisers mention read about MA November 1978 101 1111 P R 0 D U CT S N C SVILLE ROAD OW GROVE PA 19090 659-3900 SMOQOTH LANDINGS SINGLE GEAR FITS NOSE OR MAIN GEAR $350 $400 SET OF 3 FOR NOSE AND WINGS $995 $1095 Strong lightweight REALISTIC landing gears eliminate erratic vibration fea ture short fulcrum ground hugging ability Caster action Adjustable pres sure Easy customize Sizes fit wheels trom 1 3/4 3 I
Edition: Model Aviation - 1978/11
Page Numbers: 42, 43, 100, 101
CL Racing 0 Phil Shew GOODYEAR Qualifying times ranged low 247 Harris Family Team 2599 cut-off time Thats much better experts predicting represents close 15-second im provement over last year Banning mega phones 1978 did nothing slow things down Speeds bit good last year noticeable difference dramatic improvement reliability John Ballard won best finals Ive ever seen heat matched eventual first second place teams Gary Fentress pitted Ballard Bud pitted Doug flew Harris family final analysis heads-up piloting won out over flat-out speed Harris slightly better top end speed able pass once during tank Ballard used superior acceleration halflap kill gain ground start pit end less full lap ahead Ballard flying Rossi-powered Lil Quickie swinging Shadow Products 66 X 55 prop using 3 oz Dons rat tank claims larger tank has less variation fuel head between pits also gives 80-lap range leaves room quick pit correct bad setting So what does take competitive Goodyear hot runners turning 15s hitting 11-12 second pit stops translates darn good team work Equipment-wise its Rossis Glow Bee plugs either Kelley Willough Shadow Ballard prop trend seems toward internally connected lines cleaner planes design flying year Lil Quickie popu larized Stewart Willoughby design took 1st 5th used five out top 10 Plans available $200 copy Stewart G Willoughby 607 W Green St Bensenville IL 60106 anatomy winning flight Go 8 laps 175 seconds average air speed 154-155 seconds 8 laps pit 265/278/275 seconds race time 5459 Senior Goodyear Doug Harris com pletely out-muscled Bill Hughes went turn best Goodyear time Nats used Rossi-powered Buster set up internally connected lines Kelley Willoughby prop Glow Bee plug Dons 2-oz rat tank Tom Fluker took Junior third time virtually identical set up FAI Team Race US team England World Championships supposed off year Team Race As turned out seven teams actually flew participation low level competition excellent Willoughby/Oge team turned 359 fastest heat time ever recorded US Nats flying beautiful 437-gram Nelsonpowered all-balsa model turning high 17s Bob Oge handled pit work did outstanding job consider ing second day pitting diesel Gary Milo Wallace close behind flying Nelson-powered Magnum design team used one-way radio enabled pilot Gary give instruc tions pit man Milo tore up #1 plane second heat never did get back-up going finals Mogi/ 42 Model Aviation Steve Rece left John Wolfe turned Open time win Senior Rat Plane Swamp Rat using K&B 65 engine power Marshall Busby pull-tests Slow Rat entry son Chris looks Plane cele brated Nashville designs seemingly standard MA columnist Bill Lee right presents tirst place plaque Class II Mouse Lee Pardue Mouse II sponsored Greater Houston CL Modelers Assn unoffical event Tom Fluker won Junior Goodyear third time flew Wittman Buster internally connected lines Tom very active flier Ron Esman took fourth Open Slow Rat HP 36-powered original uses inboard tank fast fill automatic primer Jolly qualified third brand new Rossi powered original 100-lap heats used 116 venturi gave 37-lap range two-pit race 200-lap final switched 116 venturi four-stop race Willoughby/Oge sticking 33-34 lap set-up final shaped up battle speed vs pits Unfortunately Willoughby ran 164 laps leaving Mogi/Jolly finish alone Son racing team realized dream come true took first second Open Rat have qualified first second past two years couldnt get together finals last year 1978 another storytwo letter-perfect heats followed two perfect finals Dick few rat pilots country capable handling 150-mph rat Harold handles pitting al though appears very deliberate overall pit times equal better anyone field Lam berts flying own design called Continued page 100 November1978 43 Inside plane turned world class heat time interior view hI Quickie mast popular design Goodyear John Bal shows details Stewart Willoughbys immaculate all-balsa TR lards winning plane showing typical engine tank shut-off setup Measuring displacement John Ballards win ning Goodyear racer engine Vic Garner engine Rossi steel liner Walt Perkins warms up Nelson-powered Sha dow team racer very clean design aug mented centrifugally operated retract gear Nashville Rats used identical planes en gines tank setups take first second third Open Slow Rat Very consistent Ken Mogi left Jim Jolly father US team member Larry Jolly won FAI Team Race Ship features Vee-tail differential elevators shown strikingly photograph upen Hat winners L H Harold Lambert 1 Dick Lambert 12 Les Pardue 3 Lamberts Rat Harold Dick Lambert Father planethe Snakewas featured theJune 1977 issue ModelAviation GIANT T7 Scale VINTAGE WHEELS PILOTGOLDEN AGE WHEELS Typical wheels usedEnhance realism ofDisc-type wheels during World War andyour giant model thiswere used extensively through mid 1 930seasy-to-paint pilot moldedthe late 1 920s through Semi-pneumatic tires andfrom high-impact styrenethe 1930s Semi-pneumat brass-bushed wheels 6%Separate goggles in-ic tires brass-bushed diameter $1795 prcluded 4 tall $295wheels 6 diameter $1795 pr OTHER SIZES GNOME ENGINE CYLINDERS Gnome ratory engine among WHEELS AND PILOTS famous powerplants World War era Now ALSO AVAILABLE can make 1/4 size reproductions easily 181 PAWNEE STREET SAN MARCOS CALIPORNIA detailed high-impact styrene cylinders Approximately 3 tall$195 veer deoler wont supply orde direct adding 15% postage nod handling AIJ'wJSend 5O illestroted catalogDEPT MA 92069 semi-scale plane Stan Powell pre sented Roger Barrett Highest Placing Rookie Award finished tie eighth place first Nats Al though actual Walker trophy case time lost transit Dallas conclusion banquet came Smilin Bob Whitely presented first place Open trophy keys trophy case containing Walker Trophy Nats/Shew continued page 43 Snake using HP4ORRs power Editor Article plan Snake appeared June 1977 issue use 5-oz tank swing Bartels prop humidity Lake Charles didnt bother bitIts just like home Equipment-wise looks like several engines capable being competitive right hands Out top five first second HP4ORRs third K&B405 fourth went K&B65 Max 405R finished fifth have poten tial trick extract enough power go fast slipping self destruct mode anatomy winning flight Proto 185 seconds airspeed 122-124 seconds pit times 250/252/255 seconds race time 451 Senior Rat John Wolf Chris Busby terrific finalboth turned Open class times John teamed up Steve Rece won K&B65powered Swamp Rat Theyve flying together about three years dis played some smoothst team work attheNats juniors flying profile rats much surprise least contestant showed up processing pan rat race time converted profile just wasnt enough time get sorted out Tom Fluker won ST G21-40-powered Quickie Rat Toby Busby took time out skateboarding give Tom run money flying Max 405R-powered pro file patterned after Nashville fast rat Slow Rat Senior Slow Rat run off day before Open promised pre view better things come Nash ville Rats have completely dominated event past three years body country out beat potential challengers year Miller/Hoffman team Larry Hoffman senior put super race record what looked unbeatable time 5432 sat back see what Chris Busby could Chris broke prop first pit withdrew later flew traffic another competitor showed Texas boys still fly Slow Rat Nashville Needless say turn events precipitated flurry activity practice circles evening Junior Slow Rat Bob Tony Smedly won Tune/Hill OS Max Bob Cat design using Glass werks 8X7 rat prop burning 10% nitro fuel OS behaved perfectly giving four-flip race last minute effort extract available rpm took its toll number Open class teams including Miller/Hoff man blew connecting rod best K&B58 Harris family developed swelled piston Max Several others just couldnt get equip ment perform time Open quali fying got underway field reduced 18 Paul Tune Larry Hill Marshall Busby better known Nashville Rats wasted no time establishing superi ority qualified 1 2 3 six virtu ally identical 70-lap heats 240s finals same storyconsistent 10-second pit stops 120 mph air speed slowest heat sub 540 claim capable getting 520s flying foam wing ver sion Nashville Rat design powered Tune/Hill OS Max engines swing ing Glasswerks 9X7 Slow Rat props prop worked up give 18500-19000 rpm ground used chickenhopper tank set-up mechanical fast fill valve main tank streamlined faired leading edge inboard wing chicken hopper small rectangular tank located directly behind venturi Flexible fuel line connects main tank chicken-hopper houses uniflow vent fuel pickup line Plans Nashville Rat engines spare parts available Tune/ Hill Racing Engines Box 706 Franklin TN 37064 anatomy winning flight Proto 210 seconds lap times 148/150/ 150 seconds pit times 247/247/243 seconds race time 53375 Class II Mouse Greater Houston Control Line Modelers Association spon sored Class II Mouse informal event Lake Charles Bill Lee organized officiated event little help other Houston area modelers Turn-out little disappointing did enter good time fact Mouse Racing seems offer maximum enjoyment racing dollar favorite pit man Les Pardue won Kustom Kraftmanship left-hand TD 049 Lil Tiger used own graphite-fiber prop Glow Bee sport plug 50% nitro fuel simple uniflow tank set-up scale racer used two-wheel gear quite bit larger planes designed rules Obviously serious disadvantage Joe Klauss Mr l/2A current chairman racing advisory committee second nicely finished rat-style racer 100 ModelAviation BY POPULAR DEMAND winning Rat setup An HP engine Bee plug Bartels prop dry vent fuel tank Weve Got Lot SHOUT ABOUT elliptical surfaces also used left-hand TD 049 ran pressure conclusion think owe Linda Wheeler Vic Garner round ap plause job well done personal thanks Linda Vic running racing events lap counters timers helping make happen N ats/G retz continued page 45 Zlin 526 Akrobat Akrobat posted its third NATS win four years com bination highest static 405 flight 218 scores field equipped Webra 61 operating flaps retractable landing gear engine cut off operated electronically through standard two control lines second place Ken Longs Japanese Betty G4M2 bomber probably popular flight performer twinengined Betty launched belly-mounted Kamikaze dive bomber released three paratroopers left realistic smoke trail flight did smooth touch-and-go taxi maneuvers Ken says five differ ent kinds droppable stores can re leased bomb bay Betty full-size ship model 3/4 ale 63 span Enya 19s power weighs 5 pounds Don Hollfelders outstanding OS 25powered 40 span Great Lakes 2T-lA-2 SUPERSTAR OF STARTERS Sales zooming past 100000 starter thats turned whole world Has higher torque & RPMs heavy duty long life motor instant-on strip switch safety hand guard 2-year guarantee bested Jeff Perezs green white Piper Twin Commanche third point final round flying Also en tered Precision Scale Bob Balduss huge 60-powered Spirit St Louis model inspiring watch fly especially Bob piloting handles very realistically thing missing Lindys face leaning out window Spirit cruised around circle Open Sport Scale produced some very tight competition first three places static scores within five points other Jeff Perez Dave Falkenhagen Mike Gretz took battle flight line Last years NATS Sport Scale Champion Jeffrey Perez held high static score 93 super-looking Piper Twin Commanche Lest seem confusing Jeff actually two Twin Commanches painted identically Sport Scale Precision Close behind Falkenhagens Clipped Wing Cub Gretzs Fairchild PT-19 tied 88 static points PT-19 went up first posted 93 flight score re mained highest day set solidly top After two smooth flights Clipped Wing Cub appeared have second place clinched Perez having trouble getting complete flight ever last attempt last flight day Jeff Commanche put together slip second place move Cub third Mark Bauers gor geous red white Pitts Special Ed Pitmans realistic Stinson Reliant rounded out top five places Open Sport Scale still appears Precision Scale larger mechanical option equipped retracts flaps bombs etc models posting best flight scores Simple subject models cant fill out complete flight plan seem have herent disadvantage under current Pre cision Scale rules Perhaps need come up flight options listed rule book within capabil ities scale subjects already case AMA CL Sport Scale FAT Scale compared Dayton Chicago Oshkosh NATS number controlline scale contestants Lake Charles NATS typically low Maybe something idea colder winters make scale models Notable absence Lake Charles year three current members FAT CL Scale Team England same time NATS past standouts like Ernie Violett Bill Harney Ralph Cathy Burnstine Mike Stott Plan now attend next year wherever NATS held wont regret Its unbelievably enjoyable entertaining experiencewin lose Good people make good times scale people among best writing advertisers mention read about MA November 1978 101 1111 P R 0 D U CT S N C SVILLE ROAD OW GROVE PA 19090 659-3900 SMOQOTH LANDINGS SINGLE GEAR FITS NOSE OR MAIN GEAR $350 $400 SET OF 3 FOR NOSE AND WINGS $995 $1095 Strong lightweight REALISTIC landing gears eliminate erratic vibration fea ture short fulcrum ground hugging ability Caster action Adjustable pres sure Easy customize Sizes fit wheels trom 1 3/4 3 I
Edition: Model Aviation - 1978/11
Page Numbers: 42, 43, 100, 101
CL Racing 0 Phil Shew GOODYEAR Qualifying times ranged low 247 Harris Family Team 2599 cut-off time Thats much better experts predicting represents close 15-second im provement over last year Banning mega phones 1978 did nothing slow things down Speeds bit good last year noticeable difference dramatic improvement reliability John Ballard won best finals Ive ever seen heat matched eventual first second place teams Gary Fentress pitted Ballard Bud pitted Doug flew Harris family final analysis heads-up piloting won out over flat-out speed Harris slightly better top end speed able pass once during tank Ballard used superior acceleration halflap kill gain ground start pit end less full lap ahead Ballard flying Rossi-powered Lil Quickie swinging Shadow Products 66 X 55 prop using 3 oz Dons rat tank claims larger tank has less variation fuel head between pits also gives 80-lap range leaves room quick pit correct bad setting So what does take competitive Goodyear hot runners turning 15s hitting 11-12 second pit stops translates darn good team work Equipment-wise its Rossis Glow Bee plugs either Kelley Willough Shadow Ballard prop trend seems toward internally connected lines cleaner planes design flying year Lil Quickie popu larized Stewart Willoughby design took 1st 5th used five out top 10 Plans available $200 copy Stewart G Willoughby 607 W Green St Bensenville IL 60106 anatomy winning flight Go 8 laps 175 seconds average air speed 154-155 seconds 8 laps pit 265/278/275 seconds race time 5459 Senior Goodyear Doug Harris com pletely out-muscled Bill Hughes went turn best Goodyear time Nats used Rossi-powered Buster set up internally connected lines Kelley Willoughby prop Glow Bee plug Dons 2-oz rat tank Tom Fluker took Junior third time virtually identical set up FAI Team Race US team England World Championships supposed off year Team Race As turned out seven teams actually flew participation low level competition excellent Willoughby/Oge team turned 359 fastest heat time ever recorded US Nats flying beautiful 437-gram Nelsonpowered all-balsa model turning high 17s Bob Oge handled pit work did outstanding job consider ing second day pitting diesel Gary Milo Wallace close behind flying Nelson-powered Magnum design team used one-way radio enabled pilot Gary give instruc tions pit man Milo tore up #1 plane second heat never did get back-up going finals Mogi/ 42 Model Aviation Steve Rece left John Wolfe turned Open time win Senior Rat Plane Swamp Rat using K&B 65 engine power Marshall Busby pull-tests Slow Rat entry son Chris looks Plane cele brated Nashville designs seemingly standard MA columnist Bill Lee right presents tirst place plaque Class II Mouse Lee Pardue Mouse II sponsored Greater Houston CL Modelers Assn unoffical event Tom Fluker won Junior Goodyear third time flew Wittman Buster internally connected lines Tom very active flier Ron Esman took fourth Open Slow Rat HP 36-powered original uses inboard tank fast fill automatic primer Jolly qualified third brand new Rossi powered original 100-lap heats used 116 venturi gave 37-lap range two-pit race 200-lap final switched 116 venturi four-stop race Willoughby/Oge sticking 33-34 lap set-up final shaped up battle speed vs pits Unfortunately Willoughby ran 164 laps leaving Mogi/Jolly finish alone Son racing team realized dream come true took first second Open Rat have qualified first second past two years couldnt get together finals last year 1978 another storytwo letter-perfect heats followed two perfect finals Dick few rat pilots country capable handling 150-mph rat Harold handles pitting al though appears very deliberate overall pit times equal better anyone field Lam berts flying own design called Continued page 100 November1978 43 Inside plane turned world class heat time interior view hI Quickie mast popular design Goodyear John Bal shows details Stewart Willoughbys immaculate all-balsa TR lards winning plane showing typical engine tank shut-off setup Measuring displacement John Ballards win ning Goodyear racer engine Vic Garner engine Rossi steel liner Walt Perkins warms up Nelson-powered Sha dow team racer very clean design aug mented centrifugally operated retract gear Nashville Rats used identical planes en gines tank setups take first second third Open Slow Rat Very consistent Ken Mogi left Jim Jolly father US team member Larry Jolly won FAI Team Race Ship features Vee-tail differential elevators shown strikingly photograph upen Hat winners L H Harold Lambert 1 Dick Lambert 12 Les Pardue 3 Lamberts Rat Harold Dick Lambert Father planethe Snakewas featured theJune 1977 issue ModelAviation GIANT T7 Scale VINTAGE WHEELS PILOTGOLDEN AGE WHEELS Typical wheels usedEnhance realism ofDisc-type wheels during World War andyour giant model thiswere used extensively through mid 1 930seasy-to-paint pilot moldedthe late 1 920s through Semi-pneumatic tires andfrom high-impact styrenethe 1930s Semi-pneumat brass-bushed wheels 6%Separate goggles in-ic tires brass-bushed diameter $1795 prcluded 4 tall $295wheels 6 diameter $1795 pr OTHER SIZES GNOME ENGINE CYLINDERS Gnome ratory engine among WHEELS AND PILOTS famous powerplants World War era Now ALSO AVAILABLE can make 1/4 size reproductions easily 181 PAWNEE STREET SAN MARCOS CALIPORNIA detailed high-impact styrene cylinders Approximately 3 tall$195 veer deoler wont supply orde direct adding 15% postage nod handling AIJ'wJSend 5O illestroted catalogDEPT MA 92069 semi-scale plane Stan Powell pre sented Roger Barrett Highest Placing Rookie Award finished tie eighth place first Nats Al though actual Walker trophy case time lost transit Dallas conclusion banquet came Smilin Bob Whitely presented first place Open trophy keys trophy case containing Walker Trophy Nats/Shew continued page 43 Snake using HP4ORRs power Editor Article plan Snake appeared June 1977 issue use 5-oz tank swing Bartels prop humidity Lake Charles didnt bother bitIts just like home Equipment-wise looks like several engines capable being competitive right hands Out top five first second HP4ORRs third K&B405 fourth went K&B65 Max 405R finished fifth have poten tial trick extract enough power go fast slipping self destruct mode anatomy winning flight Proto 185 seconds airspeed 122-124 seconds pit times 250/252/255 seconds race time 451 Senior Rat John Wolf Chris Busby terrific finalboth turned Open class times John teamed up Steve Rece won K&B65powered Swamp Rat Theyve flying together about three years dis played some smoothst team work attheNats juniors flying profile rats much surprise least contestant showed up processing pan rat race time converted profile just wasnt enough time get sorted out Tom Fluker won ST G21-40-powered Quickie Rat Toby Busby took time out skateboarding give Tom run money flying Max 405R-powered pro file patterned after Nashville fast rat Slow Rat Senior Slow Rat run off day before Open promised pre view better things come Nash ville Rats have completely dominated event past three years body country out beat potential challengers year Miller/Hoffman team Larry Hoffman senior put super race record what looked unbeatable time 5432 sat back see what Chris Busby could Chris broke prop first pit withdrew later flew traffic another competitor showed Texas boys still fly Slow Rat Nashville Needless say turn events precipitated flurry activity practice circles evening Junior Slow Rat Bob Tony Smedly won Tune/Hill OS Max Bob Cat design using Glass werks 8X7 rat prop burning 10% nitro fuel OS behaved perfectly giving four-flip race last minute effort extract available rpm took its toll number Open class teams including Miller/Hoff man blew connecting rod best K&B58 Harris family developed swelled piston Max Several others just couldnt get equip ment perform time Open quali fying got underway field reduced 18 Paul Tune Larry Hill Marshall Busby better known Nashville Rats wasted no time establishing superi ority qualified 1 2 3 six virtu ally identical 70-lap heats 240s finals same storyconsistent 10-second pit stops 120 mph air speed slowest heat sub 540 claim capable getting 520s flying foam wing ver sion Nashville Rat design powered Tune/Hill OS Max engines swing ing Glasswerks 9X7 Slow Rat props prop worked up give 18500-19000 rpm ground used chickenhopper tank set-up mechanical fast fill valve main tank streamlined faired leading edge inboard wing chicken hopper small rectangular tank located directly behind venturi Flexible fuel line connects main tank chicken-hopper houses uniflow vent fuel pickup line Plans Nashville Rat engines spare parts available Tune/ Hill Racing Engines Box 706 Franklin TN 37064 anatomy winning flight Proto 210 seconds lap times 148/150/ 150 seconds pit times 247/247/243 seconds race time 53375 Class II Mouse Greater Houston Control Line Modelers Association spon sored Class II Mouse informal event Lake Charles Bill Lee organized officiated event little help other Houston area modelers Turn-out little disappointing did enter good time fact Mouse Racing seems offer maximum enjoyment racing dollar favorite pit man Les Pardue won Kustom Kraftmanship left-hand TD 049 Lil Tiger used own graphite-fiber prop Glow Bee sport plug 50% nitro fuel simple uniflow tank set-up scale racer used two-wheel gear quite bit larger planes designed rules Obviously serious disadvantage Joe Klauss Mr l/2A current chairman racing advisory committee second nicely finished rat-style racer 100 ModelAviation BY POPULAR DEMAND winning Rat setup An HP engine Bee plug Bartels prop dry vent fuel tank Weve Got Lot SHOUT ABOUT elliptical surfaces also used left-hand TD 049 ran pressure conclusion think owe Linda Wheeler Vic Garner round ap plause job well done personal thanks Linda Vic running racing events lap counters timers helping make happen N ats/G retz continued page 45 Zlin 526 Akrobat Akrobat posted its third NATS win four years com bination highest static 405 flight 218 scores field equipped Webra 61 operating flaps retractable landing gear engine cut off operated electronically through standard two control lines second place Ken Longs Japanese Betty G4M2 bomber probably popular flight performer twinengined Betty launched belly-mounted Kamikaze dive bomber released three paratroopers left realistic smoke trail flight did smooth touch-and-go taxi maneuvers Ken says five differ ent kinds droppable stores can re leased bomb bay Betty full-size ship model 3/4 ale 63 span Enya 19s power weighs 5 pounds Don Hollfelders outstanding OS 25powered 40 span Great Lakes 2T-lA-2 SUPERSTAR OF STARTERS Sales zooming past 100000 starter thats turned whole world Has higher torque & RPMs heavy duty long life motor instant-on strip switch safety hand guard 2-year guarantee bested Jeff Perezs green white Piper Twin Commanche third point final round flying Also en tered Precision Scale Bob Balduss huge 60-powered Spirit St Louis model inspiring watch fly especially Bob piloting handles very realistically thing missing Lindys face leaning out window Spirit cruised around circle Open Sport Scale produced some very tight competition first three places static scores within five points other Jeff Perez Dave Falkenhagen Mike Gretz took battle flight line Last years NATS Sport Scale Champion Jeffrey Perez held high static score 93 super-looking Piper Twin Commanche Lest seem confusing Jeff actually two Twin Commanches painted identically Sport Scale Precision Close behind Falkenhagens Clipped Wing Cub Gretzs Fairchild PT-19 tied 88 static points PT-19 went up first posted 93 flight score re mained highest day set solidly top After two smooth flights Clipped Wing Cub appeared have second place clinched Perez having trouble getting complete flight ever last attempt last flight day Jeff Commanche put together slip second place move Cub third Mark Bauers gor geous red white Pitts Special Ed Pitmans realistic Stinson Reliant rounded out top five places Open Sport Scale still appears Precision Scale larger mechanical option equipped retracts flaps bombs etc models posting best flight scores Simple subject models cant fill out complete flight plan seem have herent disadvantage under current Pre cision Scale rules Perhaps need come up flight options listed rule book within capabil ities scale subjects already case AMA CL Sport Scale FAT Scale compared Dayton Chicago Oshkosh NATS number controlline scale contestants Lake Charles NATS typically low Maybe something idea colder winters make scale models Notable absence Lake Charles year three current members FAT CL Scale Team England same time NATS past standouts like Ernie Violett Bill Harney Ralph Cathy Burnstine Mike Stott Plan now attend next year wherever NATS held wont regret Its unbelievably enjoyable entertaining experiencewin lose Good people make good times scale people among best writing advertisers mention read about MA November 1978 101 1111 P R 0 D U CT S N C SVILLE ROAD OW GROVE PA 19090 659-3900 SMOQOTH LANDINGS SINGLE GEAR FITS NOSE OR MAIN GEAR $350 $400 SET OF 3 FOR NOSE AND WINGS $995 $1095 Strong lightweight REALISTIC landing gears eliminate erratic vibration fea ture short fulcrum ground hugging ability Caster action Adjustable pres sure Easy customize Sizes fit wheels trom 1 3/4 3 I
Edition: Model Aviation - 1978/11
Page Numbers: 42, 43, 100, 101
CL Racing 0 Phil Shew GOODYEAR Qualifying times ranged low 247 Harris Family Team 2599 cut-off time Thats much better experts predicting represents close 15-second im provement over last year Banning mega phones 1978 did nothing slow things down Speeds bit good last year noticeable difference dramatic improvement reliability John Ballard won best finals Ive ever seen heat matched eventual first second place teams Gary Fentress pitted Ballard Bud pitted Doug flew Harris family final analysis heads-up piloting won out over flat-out speed Harris slightly better top end speed able pass once during tank Ballard used superior acceleration halflap kill gain ground start pit end less full lap ahead Ballard flying Rossi-powered Lil Quickie swinging Shadow Products 66 X 55 prop using 3 oz Dons rat tank claims larger tank has less variation fuel head between pits also gives 80-lap range leaves room quick pit correct bad setting So what does take competitive Goodyear hot runners turning 15s hitting 11-12 second pit stops translates darn good team work Equipment-wise its Rossis Glow Bee plugs either Kelley Willough Shadow Ballard prop trend seems toward internally connected lines cleaner planes design flying year Lil Quickie popu larized Stewart Willoughby design took 1st 5th used five out top 10 Plans available $200 copy Stewart G Willoughby 607 W Green St Bensenville IL 60106 anatomy winning flight Go 8 laps 175 seconds average air speed 154-155 seconds 8 laps pit 265/278/275 seconds race time 5459 Senior Goodyear Doug Harris com pletely out-muscled Bill Hughes went turn best Goodyear time Nats used Rossi-powered Buster set up internally connected lines Kelley Willoughby prop Glow Bee plug Dons 2-oz rat tank Tom Fluker took Junior third time virtually identical set up FAI Team Race US team England World Championships supposed off year Team Race As turned out seven teams actually flew participation low level competition excellent Willoughby/Oge team turned 359 fastest heat time ever recorded US Nats flying beautiful 437-gram Nelsonpowered all-balsa model turning high 17s Bob Oge handled pit work did outstanding job consider ing second day pitting diesel Gary Milo Wallace close behind flying Nelson-powered Magnum design team used one-way radio enabled pilot Gary give instruc tions pit man Milo tore up #1 plane second heat never did get back-up going finals Mogi/ 42 Model Aviation Steve Rece left John Wolfe turned Open time win Senior Rat Plane Swamp Rat using K&B 65 engine power Marshall Busby pull-tests Slow Rat entry son Chris looks Plane cele brated Nashville designs seemingly standard MA columnist Bill Lee right presents tirst place plaque Class II Mouse Lee Pardue Mouse II sponsored Greater Houston CL Modelers Assn unoffical event Tom Fluker won Junior Goodyear third time flew Wittman Buster internally connected lines Tom very active flier Ron Esman took fourth Open Slow Rat HP 36-powered original uses inboard tank fast fill automatic primer Jolly qualified third brand new Rossi powered original 100-lap heats used 116 venturi gave 37-lap range two-pit race 200-lap final switched 116 venturi four-stop race Willoughby/Oge sticking 33-34 lap set-up final shaped up battle speed vs pits Unfortunately Willoughby ran 164 laps leaving Mogi/Jolly finish alone Son racing team realized dream come true took first second Open Rat have qualified first second past two years couldnt get together finals last year 1978 another storytwo letter-perfect heats followed two perfect finals Dick few rat pilots country capable handling 150-mph rat Harold handles pitting al though appears very deliberate overall pit times equal better anyone field Lam berts flying own design called Continued page 100 November1978 43 Inside plane turned world class heat time interior view hI Quickie mast popular design Goodyear John Bal shows details Stewart Willoughbys immaculate all-balsa TR lards winning plane showing typical engine tank shut-off setup Measuring displacement John Ballards win ning Goodyear racer engine Vic Garner engine Rossi steel liner Walt Perkins warms up Nelson-powered Sha dow team racer very clean design aug mented centrifugally operated retract gear Nashville Rats used identical planes en gines tank setups take first second third Open Slow Rat Very consistent Ken Mogi left Jim Jolly father US team member Larry Jolly won FAI Team Race Ship features Vee-tail differential elevators shown strikingly photograph upen Hat winners L H Harold Lambert 1 Dick Lambert 12 Les Pardue 3 Lamberts Rat Harold Dick Lambert Father planethe Snakewas featured theJune 1977 issue ModelAviation GIANT T7 Scale VINTAGE WHEELS PILOTGOLDEN AGE WHEELS Typical wheels usedEnhance realism ofDisc-type wheels during World War andyour giant model thiswere used extensively through mid 1 930seasy-to-paint pilot moldedthe late 1 920s through Semi-pneumatic tires andfrom high-impact styrenethe 1930s Semi-pneumat brass-bushed wheels 6%Separate goggles in-ic tires brass-bushed diameter $1795 prcluded 4 tall $295wheels 6 diameter $1795 pr OTHER SIZES GNOME ENGINE CYLINDERS Gnome ratory engine among WHEELS AND PILOTS famous powerplants World War era Now ALSO AVAILABLE can make 1/4 size reproductions easily 181 PAWNEE STREET SAN MARCOS CALIPORNIA detailed high-impact styrene cylinders Approximately 3 tall$195 veer deoler wont supply orde direct adding 15% postage nod handling AIJ'wJSend 5O illestroted catalogDEPT MA 92069 semi-scale plane Stan Powell pre sented Roger Barrett Highest Placing Rookie Award finished tie eighth place first Nats Al though actual Walker trophy case time lost transit Dallas conclusion banquet came Smilin Bob Whitely presented first place Open trophy keys trophy case containing Walker Trophy Nats/Shew continued page 43 Snake using HP4ORRs power Editor Article plan Snake appeared June 1977 issue use 5-oz tank swing Bartels prop humidity Lake Charles didnt bother bitIts just like home Equipment-wise looks like several engines capable being competitive right hands Out top five first second HP4ORRs third K&B405 fourth went K&B65 Max 405R finished fifth have poten tial trick extract enough power go fast slipping self destruct mode anatomy winning flight Proto 185 seconds airspeed 122-124 seconds pit times 250/252/255 seconds race time 451 Senior Rat John Wolf Chris Busby terrific finalboth turned Open class times John teamed up Steve Rece won K&B65powered Swamp Rat Theyve flying together about three years dis played some smoothst team work attheNats juniors flying profile rats much surprise least contestant showed up processing pan rat race time converted profile just wasnt enough time get sorted out Tom Fluker won ST G21-40-powered Quickie Rat Toby Busby took time out skateboarding give Tom run money flying Max 405R-powered pro file patterned after Nashville fast rat Slow Rat Senior Slow Rat run off day before Open promised pre view better things come Nash ville Rats have completely dominated event past three years body country out beat potential challengers year Miller/Hoffman team Larry Hoffman senior put super race record what looked unbeatable time 5432 sat back see what Chris Busby could Chris broke prop first pit withdrew later flew traffic another competitor showed Texas boys still fly Slow Rat Nashville Needless say turn events precipitated flurry activity practice circles evening Junior Slow Rat Bob Tony Smedly won Tune/Hill OS Max Bob Cat design using Glass werks 8X7 rat prop burning 10% nitro fuel OS behaved perfectly giving four-flip race last minute effort extract available rpm took its toll number Open class teams including Miller/Hoff man blew connecting rod best K&B58 Harris family developed swelled piston Max Several others just couldnt get equip ment perform time Open quali fying got underway field reduced 18 Paul Tune Larry Hill Marshall Busby better known Nashville Rats wasted no time establishing superi ority qualified 1 2 3 six virtu ally identical 70-lap heats 240s finals same storyconsistent 10-second pit stops 120 mph air speed slowest heat sub 540 claim capable getting 520s flying foam wing ver sion Nashville Rat design powered Tune/Hill OS Max engines swing ing Glasswerks 9X7 Slow Rat props prop worked up give 18500-19000 rpm ground used chickenhopper tank set-up mechanical fast fill valve main tank streamlined faired leading edge inboard wing chicken hopper small rectangular tank located directly behind venturi Flexible fuel line connects main tank chicken-hopper houses uniflow vent fuel pickup line Plans Nashville Rat engines spare parts available Tune/ Hill Racing Engines Box 706 Franklin TN 37064 anatomy winning flight Proto 210 seconds lap times 148/150/ 150 seconds pit times 247/247/243 seconds race time 53375 Class II Mouse Greater Houston Control Line Modelers Association spon sored Class II Mouse informal event Lake Charles Bill Lee organized officiated event little help other Houston area modelers Turn-out little disappointing did enter good time fact Mouse Racing seems offer maximum enjoyment racing dollar favorite pit man Les Pardue won Kustom Kraftmanship left-hand TD 049 Lil Tiger used own graphite-fiber prop Glow Bee sport plug 50% nitro fuel simple uniflow tank set-up scale racer used two-wheel gear quite bit larger planes designed rules Obviously serious disadvantage Joe Klauss Mr l/2A current chairman racing advisory committee second nicely finished rat-style racer 100 ModelAviation BY POPULAR DEMAND winning Rat setup An HP engine Bee plug Bartels prop dry vent fuel tank Weve Got Lot SHOUT ABOUT elliptical surfaces also used left-hand TD 049 ran pressure conclusion think owe Linda Wheeler Vic Garner round ap plause job well done personal thanks Linda Vic running racing events lap counters timers helping make happen N ats/G retz continued page 45 Zlin 526 Akrobat Akrobat posted its third NATS win four years com bination highest static 405 flight 218 scores field equipped Webra 61 operating flaps retractable landing gear engine cut off operated electronically through standard two control lines second place Ken Longs Japanese Betty G4M2 bomber probably popular flight performer twinengined Betty launched belly-mounted Kamikaze dive bomber released three paratroopers left realistic smoke trail flight did smooth touch-and-go taxi maneuvers Ken says five differ ent kinds droppable stores can re leased bomb bay Betty full-size ship model 3/4 ale 63 span Enya 19s power weighs 5 pounds Don Hollfelders outstanding OS 25powered 40 span Great Lakes 2T-lA-2 SUPERSTAR OF STARTERS Sales zooming past 100000 starter thats turned whole world Has higher torque & RPMs heavy duty long life motor instant-on strip switch safety hand guard 2-year guarantee bested Jeff Perezs green white Piper Twin Commanche third point final round flying Also en tered Precision Scale Bob Balduss huge 60-powered Spirit St Louis model inspiring watch fly especially Bob piloting handles very realistically thing missing Lindys face leaning out window Spirit cruised around circle Open Sport Scale produced some very tight competition first three places static scores within five points other Jeff Perez Dave Falkenhagen Mike Gretz took battle flight line Last years NATS Sport Scale Champion Jeffrey Perez held high static score 93 super-looking Piper Twin Commanche Lest seem confusing Jeff actually two Twin Commanches painted identically Sport Scale Precision Close behind Falkenhagens Clipped Wing Cub Gretzs Fairchild PT-19 tied 88 static points PT-19 went up first posted 93 flight score re mained highest day set solidly top After two smooth flights Clipped Wing Cub appeared have second place clinched Perez having trouble getting complete flight ever last attempt last flight day Jeff Commanche put together slip second place move Cub third Mark Bauers gor geous red white Pitts Special Ed Pitmans realistic Stinson Reliant rounded out top five places Open Sport Scale still appears Precision Scale larger mechanical option equipped retracts flaps bombs etc models posting best flight scores Simple subject models cant fill out complete flight plan seem have herent disadvantage under current Pre cision Scale rules Perhaps need come up flight options listed rule book within capabil ities scale subjects already case AMA CL Sport Scale FAT Scale compared Dayton Chicago Oshkosh NATS number controlline scale contestants Lake Charles NATS typically low Maybe something idea colder winters make scale models Notable absence Lake Charles year three current members FAT CL Scale Team England same time NATS past standouts like Ernie Violett Bill Harney Ralph Cathy Burnstine Mike Stott Plan now attend next year wherever NATS held wont regret Its unbelievably enjoyable entertaining experiencewin lose Good people make good times scale people among best writing advertisers mention read about MA November 1978 101 1111 P R 0 D U CT S N C SVILLE ROAD OW GROVE PA 19090 659-3900 SMOQOTH LANDINGS SINGLE GEAR FITS NOSE OR MAIN GEAR $350 $400 SET OF 3 FOR NOSE AND WINGS $995 $1095 Strong lightweight REALISTIC landing gears eliminate erratic vibration fea ture short fulcrum ground hugging ability Caster action Adjustable pres sure Easy customize Sizes fit wheels trom 1 3/4 3 I