Scale AT THIS YEARS Nationals flew un der some new rules intended give contestant points flying por tion event static points stayed same designed bring AMA rules closer FAL rul ings As may know FAI amount available points static judg ing equal number available flying Like last year already some new rule proposals being petitioned im prove upon what have now Listed below new rule proposals brought forward Mike Gretz Montezuma Iowa 1976 National Champion CL Scale feel Mike has come up some pretty good ideas would like take opportunity give proposals endorsement support think ideas will help clarify some longstanding mis interpretations will try close existing loop-holes So read rule proposals over let Contest Board representatives know about feelings I Add section 482 CL Scale builder flyer CL scale model shall same person shall no team entries intended avoid possible misunderstanding applicability regulations flying CL Scale would clearly state builder flier model must same person no proxy flying team entries allowed 2 Add section 488 Other flight functions listed points should typical aircraft modeled contestant may asked supply evidence function performed subject Points unlisted functions will based relative skill ingenuity effect compared listed items proposal would allow contestant demonstrate flight function typical aircraft though option isnt mechanical nature would give simpler airplanes models high wings light planes biplanes home-builts etc Mike Stoft better chance compete fully chanical-optioned airplanes such fight ers bombers transports AMA CL Sport Scale FAI Scale allow nonmechanical flight options rules present time 3 Delete section 4811 rewrite sec tion 486 follows 486 Contest Sched ule . ested scale judging take place before official flights possible desirable Contest Di rector may hold part official flying before scale judging Any damage caused model flying before scale judging will disregarded count ed against contestant b Contestants shall permitted three attempts make two official flights Any flight has progressed beyond takeoff level flight will called attempt ifight will become official has progressed beyond 5 laps continuously air borne least engine running c After contestant has notified flight area available shall given three minutes get model airborne Time starts con testant begins cranking engine case multi-engine models two minutes additional engine shall given get model airborne An tempt will charged contestant fails get model airborne within time limit purpose pro posal clarify some misunderstandings areas Contest Director may reverse usual order static judging first flying competition feels desirable regard qualification flights Mike feels rules somewhat heavy-handed section 4811 states qualification flight can CDs direction consist little 5 level laps section 486 states will become official flights scoTing purposes Since two official flights allowed CL Scale two rules could jake away half competi tors opportunity obtain representa tive flight score 4 Delete present rule 4810 adopt its place following two sections 4810 Flight Scoring com mended panel two three judges used score flight competition flight score will determined add ing Flight Points section 487 Scale Operation Points section 488 Bonus Points section 489 flight score judge will aver aged flight scores other judge judges Flight Score 4811 Official Score.. official Score will determined adding best single Right Score 235 max possible points Scale Judging Score 450 max possible points maximum pos sible Official Score 685 points Scale judging shall done according pro visions Unified Scale Judging Regu lations Itemized point scores will post ed otherwise made available soon possible after flight proposal clarifies existing rules scoring outlines commonly used unwrit ten procedures scoring does advocate methods already being used accepted being correct 5 Add section 483 engine continued page 84 26 Model Aviation neat P-47D Mark Bauers winning Nats entry Senior Sport Scale Power Supertigre 60 Model built Top Flite kit Five Bauer family six entries Winner Open Sport Scale Nationals Ryan PT-22 trainer Most ships event larger 35s 60s However Claude Short designed around OS 25 CL Scale/Stott continued page 26 must equipped muffler silencer limit noise output Ducted fan installa tions electric motors exempted muffler silencer requirement proposal concerning use muffler silencer very controversial should noted though silencer may detract slightly appearance certain scale mod els hobby constant jeopardy some parts country because noise problems cases handled properly silencer can effectively used route exhaust out engine com partment scale-like manner FAI scale rules give special ingenuity points effective handling muffler stallation popularity Sport Scale has brought about several adaptable mani fold mufflers recent years require ment use mufflers CL RC Sport Scale has obviously decreased participation events Mike F Stott 118 E Wheeler St North Mankato Minn 56001 CL Rules Proposals continued page 77 CL-78-74Stunt Multi-Engines Al Rabe Irving TX proposes allow multi-engine models up 72 Cu line specifi cations pull test same presently re quired 4601-6500 cu jet favors increase multi-engine dis placement limit due lack suitable Stunt engines 30 Cu size whereas suitable 35s CL-78-75Stunt Multi-Engines Proposal Al Rabe similar CL-78-74 except allow ing multi-engines up 82 Cu total dis placement order include 40s CL-78-76Speed AA Profile Proto Jim Clem Dallas TX proposes allow Pro file Proto competition Senior Open age fliersin addition Juniors stating needs inexpensive simple Speed class both beginner expert would relatively same competitive level Specifications presently written would applytwo-line control systems no exhaust extensions4 CL-78-77Speed Builder-of-Model Jim Clem states BOM rule has ig nored years since en forced proposes eliminated CL Speed CL-78-78Speed Class AIFAI Jim Clem proposes Class Speed eliminated FAI Speed substituted its place view too classes CL Speed having two classes ef forts would concentrated FAI would have benefit strengthening US team selection program CL-78-79--Speed Reduction Classes Jim Clem proposes reduce present number Speed classes following 1 Profile Proto open age classes two lines no exhaust extensions 2 Speed same present 3 B Speed same present except increase line length 70 feet 4 FAI Speed same present 5 Formula 40 Speed same present 6 Jet Speed same present proposal would eliminate Speed C Speed D Speed Proto B Proto Reasoning provid ed Clem have too Speed slasses need repetitious number prove can go round round fast large number classes makes too hard get sponsors too hard get adequate number contestants event Actually six classes too manythree four would better proposed six classes does give little something everyone CL-78-8OCombat New ISA Event submitting proposed new Combat provi sional rules Ben Sasnett Escondido CA says Combat popular forms CL flying areas coun try frequently attracting entrants other recognized events Due need nationwide standardization proposes following rules have successfully tested Southern California competition over year CL 1AA COMBAT Provisional I Applicability pertinent AMA regu lations see sections titled Sanctioned Compe tition General General Control Line Rules CL Combat Rules shall ap plicable except specified below 2 Engines Engines shall recip rocating internal combustion type limited maximum piston displacement 051 cu Sixty percent actual piston displace ment four stroke cycle engines shall used computing displacement Use mechanical electric starters prohibited 3 Streamers Streamers shall same CL Combat except shall 1/2 wide 31 Contestant shall securely attach string leader model within three inches centerline model less 48 inches string extending beyond rearward point model indi cated ink string 4 Procedures Contestant matching judg ing scoring other contest procedures shall same CL Combat except flying circle shall laid out 5ft radius center pilots circle 40-ft 50-ft radius landing takeoff zone Chart Specifications 346-356 required line length two 008 multi-strand lines re quired 5 pounds pull test CL-78-81 SACISpeed Reduction Clas ses submitting proposal behalf Speed Advisory Committee AMA CL Contest Board SAC Chairman Bill Pardue says SAC majority clearly favors dropping some Speed events majority agreement has reached par ticular events drop proposal thus consider individual basis elimination following events %A Speed B 84 Model Aviation CURTISS C-46 NEW IN 1/72 SCALE 4iLL/Ns AT YOUR DEALER OR ORDER DIRECT ADDING 15% POSTAGE AND HANOL SEND 25 FOR COMPLETE CATALOG DEPT MA 181 PAWNEE ST SAN MARCOS CA 92G COMMANDO GIANT 18 SPAN PLASTIC MODEL KIT FEATURES 3 AND 4-BLADE PROPELLERS HARD OR FLEXIBLE TIRES SELECTION OF DECAL MARKINGS LANDING GEAR MAY BE INSTALLED EXTENDED OR RETRACTED $795 ATTENTION Would like have photo new model published Model Aviation magazine column writers very much interested hearing receive both pictures useful comments cover aspect modeling Indoor RC Pattern Pictures used columns paid rate $5 magazine appears Black white pictures much preferred color prints sure accompany pictures adequate information engine size area weight back ground special features finish materials Speed C B Proto Speed D Jr/Sr 40 C Speed idea behind reduction concentrate competition remaining fewer eventsit being said very few fly nine different classes presently avail able resulting some classes having very low number entries CL-78-82SACSpeed Tuned Pipe Ban Speed Advisory Committee proposes individual consideration per event given prohibiting tuned exhaust pipes fol lowing classes A Proto Speed B 1AA Speed C B Proto Speed D 40 C Speed E 65 D Speed whichever classes ban apply following wording pro posed following listed events tuned exhaust pipes expansion chambers mega phones shall allowed Constant diame ter type exhaust extensions allowed overall length measured centerline cylinder along cen terline exhaust system does exceed 5 inches Among reasons given proposed ban tuned pipes Proto models can look like full-size airplanes original intent interest may re kindled tuned pipes expensive operate especially 0 Speedwhere norm engine per flight event overall use minipipes will allow equipment last longer also will some amount speed reduction CL-78-83SACSpeed Exhaust Exten sions Seniors Speed Advisory Com mittee proposes limit Senior age fliers constant diameter type exhaust systems same manner presently applicable Junior age fliers 22521 committee says restriction Juniors has worthwhile looks similar benefits Senior age class competition Having re striction applicable both Juniors Se niors will benefit contests com bine age classifications CL-7B-84SACSpeed Proto Formu Ia 40 Minimum Weight Models events include acceleration factor benefit light weightwhich also provides temptation sacrifice strength weight Speed Advisory Committee proposes therefore establish minimum weights fuel follows application voted separately A Proto 6 ozs B B Proto 28 ozs C Formuta 40 Speed 28 ozs committee also notes minimum Formula 40 weight should improve competitiveness Rat Racers CL-78-B5SACISpeed AA Profile Proto Age Expansion Speed Advisory Commit tee proposes revise rules allow Se nior and/or Open fliers enter Profile Protos hA Proto events separate consider ation proposed whether should applicable Seniors both Seniors Opens committee notes especially desirable Seniors able use hA Profile Protos flew Ju niors expanded also include Opens would allow simple beginner-type model entered Speed event CL-78-86SACSpeed AA Profile Proto Specs Sr/Open CL-78-85SAC ac cepted Speed Advisory Committee pro poses exempt Senior Senior Open Fliers model specifications 2218 3h & i requiring two lines exposed controls side-mounted engine exposed tank committees view restrictions PAINT & CATALYST easiest apply durable EPOXY PAINT AVAILABLE Ultimate Finish development space age Super Poxy Paint formulated exclusively models - mix use NO WAITING TIME AND RUBBING Fast curing Quick drying Sets up rapidly Minimum dust adherence Stays glossy longer Least affected ultra-violet sun rays manufactured fuels 11 BASIC COLORS SPRAY OR BRUSH Red ow ge White k inum llic Green llic Blue llic Red own K & B Purple e packed /2 Pt cans plus 22 ADDITIONAL COLORS SPRAY available mixing CATALYSTS SPRAYING HINGtos CLEAR ER PRIMER CATALYST Pt K & B FIBERGLAS covering highest quality toughest weave fiberglass available use poly ester eposy resin Excellent contourjug qualities make easy apply compound curves Available 3 weights 38 wide LIGHT LOTH wood air planescover 100% MEDIUM 2 OZ CLOTH increasing structural strength around fillets nose interior plane HEAVY B OZ CLOTH joining wings moldin own parts R MinraiRallnnne Fill FR. should applied models flown against fully cowled entries CL-78-8736A Mouse/Scale Racing Line Diameters Bill Pardue Greensboro NC pro poses minimum diameter singlestrand lines reduced 010 008 012 010 multi-strand Such reduction needed says due previous lengthening lines 35 feet 42 feet Further 008 lines also could used Jr hA Profile Proto reduce amount equipment required flier CL-78-88SIow Rat Racing Cheek Cowls Stating original intention maximum cheek cowl thickness Slow Rat Racing same Slow Com bat Bill Pardue proposes chart 2110 modified show 3/4 inch instead THINNER use K & B 5UPER roxy Pints Quarts _____ K& B SUPER POXY RESINfor sealing applying glass cloth created include characteristics desirable resin its applicatron It--i Easily werkabla Requires minimum ing Little clogging sand paper Curing time adjustable amount catalyst Durable Does become brittle 1 OT CAN including catalyst /2 inch maximum cheek cowl width Slow Rat Racing CL-7B-89General 4A Line Specifica tions Bill Pardue proposes 2154 per taining hA model line specifications other Speed eliminated due specifications being listed other rule book sections hA engines may used Fur ther says 012 multi-strand re quirement 2154 unreasonable CL-78-90Speed 4A Profile Proto Fuse lage Width Bill Pardue proposes max imum fuselage width including plywood doublers increased 3/8 /2 hA Profile Proto chart under 2110 change models complied un der previous rules will still qualify under cur rent rules December 1976 85
Edition: Model Aviation - 1976/12
Page Numbers: 26, 84, 85
Scale AT THIS YEARS Nationals flew un der some new rules intended give contestant points flying por tion event static points stayed same designed bring AMA rules closer FAL rul ings As may know FAI amount available points static judg ing equal number available flying Like last year already some new rule proposals being petitioned im prove upon what have now Listed below new rule proposals brought forward Mike Gretz Montezuma Iowa 1976 National Champion CL Scale feel Mike has come up some pretty good ideas would like take opportunity give proposals endorsement support think ideas will help clarify some longstanding mis interpretations will try close existing loop-holes So read rule proposals over let Contest Board representatives know about feelings I Add section 482 CL Scale builder flyer CL scale model shall same person shall no team entries intended avoid possible misunderstanding applicability regulations flying CL Scale would clearly state builder flier model must same person no proxy flying team entries allowed 2 Add section 488 Other flight functions listed points should typical aircraft modeled contestant may asked supply evidence function performed subject Points unlisted functions will based relative skill ingenuity effect compared listed items proposal would allow contestant demonstrate flight function typical aircraft though option isnt mechanical nature would give simpler airplanes models high wings light planes biplanes home-builts etc Mike Stoft better chance compete fully chanical-optioned airplanes such fight ers bombers transports AMA CL Sport Scale FAI Scale allow nonmechanical flight options rules present time 3 Delete section 4811 rewrite sec tion 486 follows 486 Contest Sched ule . ested scale judging take place before official flights possible desirable Contest Di rector may hold part official flying before scale judging Any damage caused model flying before scale judging will disregarded count ed against contestant b Contestants shall permitted three attempts make two official flights Any flight has progressed beyond takeoff level flight will called attempt ifight will become official has progressed beyond 5 laps continuously air borne least engine running c After contestant has notified flight area available shall given three minutes get model airborne Time starts con testant begins cranking engine case multi-engine models two minutes additional engine shall given get model airborne An tempt will charged contestant fails get model airborne within time limit purpose pro posal clarify some misunderstandings areas Contest Director may reverse usual order static judging first flying competition feels desirable regard qualification flights Mike feels rules somewhat heavy-handed section 4811 states qualification flight can CDs direction consist little 5 level laps section 486 states will become official flights scoTing purposes Since two official flights allowed CL Scale two rules could jake away half competi tors opportunity obtain representa tive flight score 4 Delete present rule 4810 adopt its place following two sections 4810 Flight Scoring com mended panel two three judges used score flight competition flight score will determined add ing Flight Points section 487 Scale Operation Points section 488 Bonus Points section 489 flight score judge will aver aged flight scores other judge judges Flight Score 4811 Official Score.. official Score will determined adding best single Right Score 235 max possible points Scale Judging Score 450 max possible points maximum pos sible Official Score 685 points Scale judging shall done according pro visions Unified Scale Judging Regu lations Itemized point scores will post ed otherwise made available soon possible after flight proposal clarifies existing rules scoring outlines commonly used unwrit ten procedures scoring does advocate methods already being used accepted being correct 5 Add section 483 engine continued page 84 26 Model Aviation neat P-47D Mark Bauers winning Nats entry Senior Sport Scale Power Supertigre 60 Model built Top Flite kit Five Bauer family six entries Winner Open Sport Scale Nationals Ryan PT-22 trainer Most ships event larger 35s 60s However Claude Short designed around OS 25 CL Scale/Stott continued page 26 must equipped muffler silencer limit noise output Ducted fan installa tions electric motors exempted muffler silencer requirement proposal concerning use muffler silencer very controversial should noted though silencer may detract slightly appearance certain scale mod els hobby constant jeopardy some parts country because noise problems cases handled properly silencer can effectively used route exhaust out engine com partment scale-like manner FAI scale rules give special ingenuity points effective handling muffler stallation popularity Sport Scale has brought about several adaptable mani fold mufflers recent years require ment use mufflers CL RC Sport Scale has obviously decreased participation events Mike F Stott 118 E Wheeler St North Mankato Minn 56001 CL Rules Proposals continued page 77 CL-78-74Stunt Multi-Engines Al Rabe Irving TX proposes allow multi-engine models up 72 Cu line specifi cations pull test same presently re quired 4601-6500 cu jet favors increase multi-engine dis placement limit due lack suitable Stunt engines 30 Cu size whereas suitable 35s CL-78-75Stunt Multi-Engines Proposal Al Rabe similar CL-78-74 except allow ing multi-engines up 82 Cu total dis placement order include 40s CL-78-76Speed AA Profile Proto Jim Clem Dallas TX proposes allow Pro file Proto competition Senior Open age fliersin addition Juniors stating needs inexpensive simple Speed class both beginner expert would relatively same competitive level Specifications presently written would applytwo-line control systems no exhaust extensions4 CL-78-77Speed Builder-of-Model Jim Clem states BOM rule has ig nored years since en forced proposes eliminated CL Speed CL-78-78Speed Class AIFAI Jim Clem proposes Class Speed eliminated FAI Speed substituted its place view too classes CL Speed having two classes ef forts would concentrated FAI would have benefit strengthening US team selection program CL-78-79--Speed Reduction Classes Jim Clem proposes reduce present number Speed classes following 1 Profile Proto open age classes two lines no exhaust extensions 2 Speed same present 3 B Speed same present except increase line length 70 feet 4 FAI Speed same present 5 Formula 40 Speed same present 6 Jet Speed same present proposal would eliminate Speed C Speed D Speed Proto B Proto Reasoning provid ed Clem have too Speed slasses need repetitious number prove can go round round fast large number classes makes too hard get sponsors too hard get adequate number contestants event Actually six classes too manythree four would better proposed six classes does give little something everyone CL-78-8OCombat New ISA Event submitting proposed new Combat provi sional rules Ben Sasnett Escondido CA says Combat popular forms CL flying areas coun try frequently attracting entrants other recognized events Due need nationwide standardization proposes following rules have successfully tested Southern California competition over year CL 1AA COMBAT Provisional I Applicability pertinent AMA regu lations see sections titled Sanctioned Compe tition General General Control Line Rules CL Combat Rules shall ap plicable except specified below 2 Engines Engines shall recip rocating internal combustion type limited maximum piston displacement 051 cu Sixty percent actual piston displace ment four stroke cycle engines shall used computing displacement Use mechanical electric starters prohibited 3 Streamers Streamers shall same CL Combat except shall 1/2 wide 31 Contestant shall securely attach string leader model within three inches centerline model less 48 inches string extending beyond rearward point model indi cated ink string 4 Procedures Contestant matching judg ing scoring other contest procedures shall same CL Combat except flying circle shall laid out 5ft radius center pilots circle 40-ft 50-ft radius landing takeoff zone Chart Specifications 346-356 required line length two 008 multi-strand lines re quired 5 pounds pull test CL-78-81 SACISpeed Reduction Clas ses submitting proposal behalf Speed Advisory Committee AMA CL Contest Board SAC Chairman Bill Pardue says SAC majority clearly favors dropping some Speed events majority agreement has reached par ticular events drop proposal thus consider individual basis elimination following events %A Speed B 84 Model Aviation CURTISS C-46 NEW IN 1/72 SCALE 4iLL/Ns AT YOUR DEALER OR ORDER DIRECT ADDING 15% POSTAGE AND HANOL SEND 25 FOR COMPLETE CATALOG DEPT MA 181 PAWNEE ST SAN MARCOS CA 92G COMMANDO GIANT 18 SPAN PLASTIC MODEL KIT FEATURES 3 AND 4-BLADE PROPELLERS HARD OR FLEXIBLE TIRES SELECTION OF DECAL MARKINGS LANDING GEAR MAY BE INSTALLED EXTENDED OR RETRACTED $795 ATTENTION Would like have photo new model published Model Aviation magazine column writers very much interested hearing receive both pictures useful comments cover aspect modeling Indoor RC Pattern Pictures used columns paid rate $5 magazine appears Black white pictures much preferred color prints sure accompany pictures adequate information engine size area weight back ground special features finish materials Speed C B Proto Speed D Jr/Sr 40 C Speed idea behind reduction concentrate competition remaining fewer eventsit being said very few fly nine different classes presently avail able resulting some classes having very low number entries CL-78-82SACSpeed Tuned Pipe Ban Speed Advisory Committee proposes individual consideration per event given prohibiting tuned exhaust pipes fol lowing classes A Proto Speed B 1AA Speed C B Proto Speed D 40 C Speed E 65 D Speed whichever classes ban apply following wording pro posed following listed events tuned exhaust pipes expansion chambers mega phones shall allowed Constant diame ter type exhaust extensions allowed overall length measured centerline cylinder along cen terline exhaust system does exceed 5 inches Among reasons given proposed ban tuned pipes Proto models can look like full-size airplanes original intent interest may re kindled tuned pipes expensive operate especially 0 Speedwhere norm engine per flight event overall use minipipes will allow equipment last longer also will some amount speed reduction CL-78-83SACSpeed Exhaust Exten sions Seniors Speed Advisory Com mittee proposes limit Senior age fliers constant diameter type exhaust systems same manner presently applicable Junior age fliers 22521 committee says restriction Juniors has worthwhile looks similar benefits Senior age class competition Having re striction applicable both Juniors Se niors will benefit contests com bine age classifications CL-7B-84SACSpeed Proto Formu Ia 40 Minimum Weight Models events include acceleration factor benefit light weightwhich also provides temptation sacrifice strength weight Speed Advisory Committee proposes therefore establish minimum weights fuel follows application voted separately A Proto 6 ozs B B Proto 28 ozs C Formuta 40 Speed 28 ozs committee also notes minimum Formula 40 weight should improve competitiveness Rat Racers CL-78-B5SACISpeed AA Profile Proto Age Expansion Speed Advisory Commit tee proposes revise rules allow Se nior and/or Open fliers enter Profile Protos hA Proto events separate consider ation proposed whether should applicable Seniors both Seniors Opens committee notes especially desirable Seniors able use hA Profile Protos flew Ju niors expanded also include Opens would allow simple beginner-type model entered Speed event CL-78-86SACSpeed AA Profile Proto Specs Sr/Open CL-78-85SAC ac cepted Speed Advisory Committee pro poses exempt Senior Senior Open Fliers model specifications 2218 3h & i requiring two lines exposed controls side-mounted engine exposed tank committees view restrictions PAINT & CATALYST easiest apply durable EPOXY PAINT AVAILABLE Ultimate Finish development space age Super Poxy Paint formulated exclusively models - mix use NO WAITING TIME AND RUBBING Fast curing Quick drying Sets up rapidly Minimum dust adherence Stays glossy longer Least affected ultra-violet sun rays manufactured fuels 11 BASIC COLORS SPRAY OR BRUSH Red ow ge White k inum llic Green llic Blue llic Red own K & B Purple e packed /2 Pt cans plus 22 ADDITIONAL COLORS SPRAY available mixing CATALYSTS SPRAYING HINGtos CLEAR ER PRIMER CATALYST Pt K & B FIBERGLAS covering highest quality toughest weave fiberglass available use poly ester eposy resin Excellent contourjug qualities make easy apply compound curves Available 3 weights 38 wide LIGHT LOTH wood air planescover 100% MEDIUM 2 OZ CLOTH increasing structural strength around fillets nose interior plane HEAVY B OZ CLOTH joining wings moldin own parts R MinraiRallnnne Fill FR. should applied models flown against fully cowled entries CL-78-8736A Mouse/Scale Racing Line Diameters Bill Pardue Greensboro NC pro poses minimum diameter singlestrand lines reduced 010 008 012 010 multi-strand Such reduction needed says due previous lengthening lines 35 feet 42 feet Further 008 lines also could used Jr hA Profile Proto reduce amount equipment required flier CL-78-88SIow Rat Racing Cheek Cowls Stating original intention maximum cheek cowl thickness Slow Rat Racing same Slow Com bat Bill Pardue proposes chart 2110 modified show 3/4 inch instead THINNER use K & B 5UPER roxy Pints Quarts _____ K& B SUPER POXY RESINfor sealing applying glass cloth created include characteristics desirable resin its applicatron It--i Easily werkabla Requires minimum ing Little clogging sand paper Curing time adjustable amount catalyst Durable Does become brittle 1 OT CAN including catalyst /2 inch maximum cheek cowl width Slow Rat Racing CL-7B-89General 4A Line Specifica tions Bill Pardue proposes 2154 per taining hA model line specifications other Speed eliminated due specifications being listed other rule book sections hA engines may used Fur ther says 012 multi-strand re quirement 2154 unreasonable CL-78-90Speed 4A Profile Proto Fuse lage Width Bill Pardue proposes max imum fuselage width including plywood doublers increased 3/8 /2 hA Profile Proto chart under 2110 change models complied un der previous rules will still qualify under cur rent rules December 1976 85
Edition: Model Aviation - 1976/12
Page Numbers: 26, 84, 85
Scale AT THIS YEARS Nationals flew un der some new rules intended give contestant points flying por tion event static points stayed same designed bring AMA rules closer FAL rul ings As may know FAI amount available points static judg ing equal number available flying Like last year already some new rule proposals being petitioned im prove upon what have now Listed below new rule proposals brought forward Mike Gretz Montezuma Iowa 1976 National Champion CL Scale feel Mike has come up some pretty good ideas would like take opportunity give proposals endorsement support think ideas will help clarify some longstanding mis interpretations will try close existing loop-holes So read rule proposals over let Contest Board representatives know about feelings I Add section 482 CL Scale builder flyer CL scale model shall same person shall no team entries intended avoid possible misunderstanding applicability regulations flying CL Scale would clearly state builder flier model must same person no proxy flying team entries allowed 2 Add section 488 Other flight functions listed points should typical aircraft modeled contestant may asked supply evidence function performed subject Points unlisted functions will based relative skill ingenuity effect compared listed items proposal would allow contestant demonstrate flight function typical aircraft though option isnt mechanical nature would give simpler airplanes models high wings light planes biplanes home-builts etc Mike Stoft better chance compete fully chanical-optioned airplanes such fight ers bombers transports AMA CL Sport Scale FAI Scale allow nonmechanical flight options rules present time 3 Delete section 4811 rewrite sec tion 486 follows 486 Contest Sched ule . ested scale judging take place before official flights possible desirable Contest Di rector may hold part official flying before scale judging Any damage caused model flying before scale judging will disregarded count ed against contestant b Contestants shall permitted three attempts make two official flights Any flight has progressed beyond takeoff level flight will called attempt ifight will become official has progressed beyond 5 laps continuously air borne least engine running c After contestant has notified flight area available shall given three minutes get model airborne Time starts con testant begins cranking engine case multi-engine models two minutes additional engine shall given get model airborne An tempt will charged contestant fails get model airborne within time limit purpose pro posal clarify some misunderstandings areas Contest Director may reverse usual order static judging first flying competition feels desirable regard qualification flights Mike feels rules somewhat heavy-handed section 4811 states qualification flight can CDs direction consist little 5 level laps section 486 states will become official flights scoTing purposes Since two official flights allowed CL Scale two rules could jake away half competi tors opportunity obtain representa tive flight score 4 Delete present rule 4810 adopt its place following two sections 4810 Flight Scoring com mended panel two three judges used score flight competition flight score will determined add ing Flight Points section 487 Scale Operation Points section 488 Bonus Points section 489 flight score judge will aver aged flight scores other judge judges Flight Score 4811 Official Score.. official Score will determined adding best single Right Score 235 max possible points Scale Judging Score 450 max possible points maximum pos sible Official Score 685 points Scale judging shall done according pro visions Unified Scale Judging Regu lations Itemized point scores will post ed otherwise made available soon possible after flight proposal clarifies existing rules scoring outlines commonly used unwrit ten procedures scoring does advocate methods already being used accepted being correct 5 Add section 483 engine continued page 84 26 Model Aviation neat P-47D Mark Bauers winning Nats entry Senior Sport Scale Power Supertigre 60 Model built Top Flite kit Five Bauer family six entries Winner Open Sport Scale Nationals Ryan PT-22 trainer Most ships event larger 35s 60s However Claude Short designed around OS 25 CL Scale/Stott continued page 26 must equipped muffler silencer limit noise output Ducted fan installa tions electric motors exempted muffler silencer requirement proposal concerning use muffler silencer very controversial should noted though silencer may detract slightly appearance certain scale mod els hobby constant jeopardy some parts country because noise problems cases handled properly silencer can effectively used route exhaust out engine com partment scale-like manner FAI scale rules give special ingenuity points effective handling muffler stallation popularity Sport Scale has brought about several adaptable mani fold mufflers recent years require ment use mufflers CL RC Sport Scale has obviously decreased participation events Mike F Stott 118 E Wheeler St North Mankato Minn 56001 CL Rules Proposals continued page 77 CL-78-74Stunt Multi-Engines Al Rabe Irving TX proposes allow multi-engine models up 72 Cu line specifi cations pull test same presently re quired 4601-6500 cu jet favors increase multi-engine dis placement limit due lack suitable Stunt engines 30 Cu size whereas suitable 35s CL-78-75Stunt Multi-Engines Proposal Al Rabe similar CL-78-74 except allow ing multi-engines up 82 Cu total dis placement order include 40s CL-78-76Speed AA Profile Proto Jim Clem Dallas TX proposes allow Pro file Proto competition Senior Open age fliersin addition Juniors stating needs inexpensive simple Speed class both beginner expert would relatively same competitive level Specifications presently written would applytwo-line control systems no exhaust extensions4 CL-78-77Speed Builder-of-Model Jim Clem states BOM rule has ig nored years since en forced proposes eliminated CL Speed CL-78-78Speed Class AIFAI Jim Clem proposes Class Speed eliminated FAI Speed substituted its place view too classes CL Speed having two classes ef forts would concentrated FAI would have benefit strengthening US team selection program CL-78-79--Speed Reduction Classes Jim Clem proposes reduce present number Speed classes following 1 Profile Proto open age classes two lines no exhaust extensions 2 Speed same present 3 B Speed same present except increase line length 70 feet 4 FAI Speed same present 5 Formula 40 Speed same present 6 Jet Speed same present proposal would eliminate Speed C Speed D Speed Proto B Proto Reasoning provid ed Clem have too Speed slasses need repetitious number prove can go round round fast large number classes makes too hard get sponsors too hard get adequate number contestants event Actually six classes too manythree four would better proposed six classes does give little something everyone CL-78-8OCombat New ISA Event submitting proposed new Combat provi sional rules Ben Sasnett Escondido CA says Combat popular forms CL flying areas coun try frequently attracting entrants other recognized events Due need nationwide standardization proposes following rules have successfully tested Southern California competition over year CL 1AA COMBAT Provisional I Applicability pertinent AMA regu lations see sections titled Sanctioned Compe tition General General Control Line Rules CL Combat Rules shall ap plicable except specified below 2 Engines Engines shall recip rocating internal combustion type limited maximum piston displacement 051 cu Sixty percent actual piston displace ment four stroke cycle engines shall used computing displacement Use mechanical electric starters prohibited 3 Streamers Streamers shall same CL Combat except shall 1/2 wide 31 Contestant shall securely attach string leader model within three inches centerline model less 48 inches string extending beyond rearward point model indi cated ink string 4 Procedures Contestant matching judg ing scoring other contest procedures shall same CL Combat except flying circle shall laid out 5ft radius center pilots circle 40-ft 50-ft radius landing takeoff zone Chart Specifications 346-356 required line length two 008 multi-strand lines re quired 5 pounds pull test CL-78-81 SACISpeed Reduction Clas ses submitting proposal behalf Speed Advisory Committee AMA CL Contest Board SAC Chairman Bill Pardue says SAC majority clearly favors dropping some Speed events majority agreement has reached par ticular events drop proposal thus consider individual basis elimination following events %A Speed B 84 Model Aviation CURTISS C-46 NEW IN 1/72 SCALE 4iLL/Ns AT YOUR DEALER OR ORDER DIRECT ADDING 15% POSTAGE AND HANOL SEND 25 FOR COMPLETE CATALOG DEPT MA 181 PAWNEE ST SAN MARCOS CA 92G COMMANDO GIANT 18 SPAN PLASTIC MODEL KIT FEATURES 3 AND 4-BLADE PROPELLERS HARD OR FLEXIBLE TIRES SELECTION OF DECAL MARKINGS LANDING GEAR MAY BE INSTALLED EXTENDED OR RETRACTED $795 ATTENTION Would like have photo new model published Model Aviation magazine column writers very much interested hearing receive both pictures useful comments cover aspect modeling Indoor RC Pattern Pictures used columns paid rate $5 magazine appears Black white pictures much preferred color prints sure accompany pictures adequate information engine size area weight back ground special features finish materials Speed C B Proto Speed D Jr/Sr 40 C Speed idea behind reduction concentrate competition remaining fewer eventsit being said very few fly nine different classes presently avail able resulting some classes having very low number entries CL-78-82SACSpeed Tuned Pipe Ban Speed Advisory Committee proposes individual consideration per event given prohibiting tuned exhaust pipes fol lowing classes A Proto Speed B 1AA Speed C B Proto Speed D 40 C Speed E 65 D Speed whichever classes ban apply following wording pro posed following listed events tuned exhaust pipes expansion chambers mega phones shall allowed Constant diame ter type exhaust extensions allowed overall length measured centerline cylinder along cen terline exhaust system does exceed 5 inches Among reasons given proposed ban tuned pipes Proto models can look like full-size airplanes original intent interest may re kindled tuned pipes expensive operate especially 0 Speedwhere norm engine per flight event overall use minipipes will allow equipment last longer also will some amount speed reduction CL-78-83SACSpeed Exhaust Exten sions Seniors Speed Advisory Com mittee proposes limit Senior age fliers constant diameter type exhaust systems same manner presently applicable Junior age fliers 22521 committee says restriction Juniors has worthwhile looks similar benefits Senior age class competition Having re striction applicable both Juniors Se niors will benefit contests com bine age classifications CL-7B-84SACSpeed Proto Formu Ia 40 Minimum Weight Models events include acceleration factor benefit light weightwhich also provides temptation sacrifice strength weight Speed Advisory Committee proposes therefore establish minimum weights fuel follows application voted separately A Proto 6 ozs B B Proto 28 ozs C Formuta 40 Speed 28 ozs committee also notes minimum Formula 40 weight should improve competitiveness Rat Racers CL-78-B5SACISpeed AA Profile Proto Age Expansion Speed Advisory Commit tee proposes revise rules allow Se nior and/or Open fliers enter Profile Protos hA Proto events separate consider ation proposed whether should applicable Seniors both Seniors Opens committee notes especially desirable Seniors able use hA Profile Protos flew Ju niors expanded also include Opens would allow simple beginner-type model entered Speed event CL-78-86SACSpeed AA Profile Proto Specs Sr/Open CL-78-85SAC ac cepted Speed Advisory Committee pro poses exempt Senior Senior Open Fliers model specifications 2218 3h & i requiring two lines exposed controls side-mounted engine exposed tank committees view restrictions PAINT & CATALYST easiest apply durable EPOXY PAINT AVAILABLE Ultimate Finish development space age Super Poxy Paint formulated exclusively models - mix use NO WAITING TIME AND RUBBING Fast curing Quick drying Sets up rapidly Minimum dust adherence Stays glossy longer Least affected ultra-violet sun rays manufactured fuels 11 BASIC COLORS SPRAY OR BRUSH Red ow ge White k inum llic Green llic Blue llic Red own K & B Purple e packed /2 Pt cans plus 22 ADDITIONAL COLORS SPRAY available mixing CATALYSTS SPRAYING HINGtos CLEAR ER PRIMER CATALYST Pt K & B FIBERGLAS covering highest quality toughest weave fiberglass available use poly ester eposy resin Excellent contourjug qualities make easy apply compound curves Available 3 weights 38 wide LIGHT LOTH wood air planescover 100% MEDIUM 2 OZ CLOTH increasing structural strength around fillets nose interior plane HEAVY B OZ CLOTH joining wings moldin own parts R MinraiRallnnne Fill FR. should applied models flown against fully cowled entries CL-78-8736A Mouse/Scale Racing Line Diameters Bill Pardue Greensboro NC pro poses minimum diameter singlestrand lines reduced 010 008 012 010 multi-strand Such reduction needed says due previous lengthening lines 35 feet 42 feet Further 008 lines also could used Jr hA Profile Proto reduce amount equipment required flier CL-78-88SIow Rat Racing Cheek Cowls Stating original intention maximum cheek cowl thickness Slow Rat Racing same Slow Com bat Bill Pardue proposes chart 2110 modified show 3/4 inch instead THINNER use K & B 5UPER roxy Pints Quarts _____ K& B SUPER POXY RESINfor sealing applying glass cloth created include characteristics desirable resin its applicatron It--i Easily werkabla Requires minimum ing Little clogging sand paper Curing time adjustable amount catalyst Durable Does become brittle 1 OT CAN including catalyst /2 inch maximum cheek cowl width Slow Rat Racing CL-7B-89General 4A Line Specifica tions Bill Pardue proposes 2154 per taining hA model line specifications other Speed eliminated due specifications being listed other rule book sections hA engines may used Fur ther says 012 multi-strand re quirement 2154 unreasonable CL-78-90Speed 4A Profile Proto Fuse lage Width Bill Pardue proposes max imum fuselage width including plywood doublers increased 3/8 /2 hA Profile Proto chart under 2110 change models complied un der previous rules will still qualify under cur rent rules December 1976 85