AVANZ NEWSnewsarchives.yolasite.com/resources/AVANZ/2016/AVANZ News...AVANZ NEWS July / August 2016 Issue 150 Page 6 FUTURE EVENTS RC Vintage Contest and Rally Schedule 2016/2017 September

AVANZ NEWS

Newsletter of the Vintage Special Interest Group of Model Flying New Zealand Issue 150 July / August 2016

AVANZ NEWS July / August 2016 Issue 150 Page 2

SIG SECRETARY / CHAIRMAN: Wayne Cartwright [email protected]: Gary Burrows, Graham Main, Allan Knox, Don Mossop, David Crook TREASURER: Rex Bain [email protected]: Bernard Scott [email protected] 7 Camberley Way Hamilton (07) 853.8847 PLANS: Mark Venter [email protected]

On the Cover Mass launch of A-frame models. (See pg 7 for an up-coming mass launch event)

In this Issue

From the EditorCommittee NotesIncomingFuture EventsJumpin' BeanWaikato Nos ChampsModernaire 57Vintage Scale TexacoCurtis RobinBuilding a 1/2A EngineWork in ProgressCover StoriesRed RacerLeader BoardsReal VintageMiscellaneousFree Flight Notices

From the Editor

Last issue had a much appreciated report onAustralian SAM activities; this issue welcomes JohnAndrews from the UK and Editor of SAM 1066's NewClarion; sections of AVANZ News have appeared inseveral overseasVintagenewsletters, and it hasbeenadded to the newsletter page onSAMUSA'sweb site.All thesearepositive steps in sharing informationwith,and receiving it back from, the Vintage community.

One of the notions we seem to have picked up fromoverseas is that an aeromodelling year is divided intoa flying season in the warmer months and a buildingseason in the cooler months. Looking back to the1970's, I do not recall there being such a split in theyear's activities - flying and building went on all yearround. Certainly, winter flying sessions were shorter,a little less frequent, and an extra woolly jumper wascalled for, but there was never a period when flyingwas ruled out simply because it wasn't "the season".

Whether we blame winter model flying inactivity onadvancing years, climate change, or any other handyscapegoat, opting out of putting on that extra woollyjumper carries the onus of actually doing the otherthing - building. It's easy to go overboard with this andstart several projects rather thanconcentratingononeat a time. The result can be a lack of progress on allfronts and a frustration that, while trying to make thebest use of it, time is in fact wasted.

Guidance is to be found in Vintage wisdom - in thiscase quoted in an engaging little book by ElisabethBailey called "The Sound of a Wild Snail Eating"Think not of the amount to be accomplished andthe difficulties to be overcome, or the end to beattained, but set earnestly at the little task atyour elbow, letting that be sufficient for theday. Sir William Osler (1849-1919)Oriental advice from Kobayashi Issa, 1763-1828, istypically succinct and existential

Climb Mount FujiO snail .... but slowly, slowly.

I may just have space and time enough to engrave thesecond quote onto my Stanley knife before I checkwhat's at my elbow and return to the slow climb .... or,maybe, even put on that extra woolly jumper.

Bernard Scott

Contributors to this issue

John Andrews Neville Mines Allan KnoxChris Murphy Wayne CartwrightJohn Butcher


COMMITTEE NOTICES

FREE FLIGHT NOSTALGIA AND CLASSIC GLIDER AT THE NATIONALS

There has been little support for the FF SIG's Classic A/2 Glider at recentNationals. The FF SIG has suggested combining the event with the VintageSIG's Nostalgia Glider Duration and Classic Glider Duration events, whichwould thenbe flownasasingle combinedevent called FreeFlightNostalgiaandClassic Glider Combined.

The time span of Classic A/2 already qualifies such gliders to fly in existingVintage events as either aNostagiaGlider or aClassicGlider, but by combiningthe two events, all Classic A/2s will be able to fly in the same event.

The Vintage Committee has agreed to trial this at the next Nationals, as it willextend theopportunity for free flighters to flyClassicA/2models in a singleevent

and hopefully boost entries over those previously obtained in the separately runNostalgia Glider Duration event and in the Classic Glider Duration componentof the Classic Combined event. FF Vintage Glider will continue as a separateevent.

In the interest of clarity, at the next Nationals the existing Classic Combinedevent will be renamed Free Flight Classic Power and Rubber Combined. Forentry and competition points purposes, the Free Flight Nostalgia and ClassicGlider Combined event will be under the auspices of the Vintage SIG.

These trial alterations apply only to the upcoming Nationals and do not changein any way existing competition or NDC arrangements.

VINTAGE FLYING RULES Completion of Re-formatting Project

The Vintage SIG Committee has completed a project that has re-formattedand edited the Vintage Flying Rules, incorporating a revised Code ofPractice. Bernard Scott managed this process and edited the document,Wayne Cartwright assisted him, and the Committee reviewed the draft.

The project aimed to improve layout and readability without changing themeaning of the rules. Three rules actually did require relatively minorchanges, and these were recently approved by email vote. The Rules canbe downloaded from the Vintage Page and Competition Rules Page of theMFNZ website.

TWO BELATED AWARDSThe Committee is pleased to recognise Rex Anderson as the winner ofthe 2015 IC Tomboy Contest. Rex's score of 1432 was made using aDoonside Mills. The winning score of 1782 in the 2015 Electric TomboyContest was also recorded by Rex Anderson.The winning scores, along with the second highest scores in bothcontests, were all made at the NI Vintage Championships.Congratulations to Rex who has been presented with the two $50 prizesfor the events.

NORTHERN NORTH ISLAND RC VINTAGE CONTEST COMMITTEEThis Committee, comprising Dave Crook and Tony Gribble, is noworganising and running RC Vintage contest / rally flying in the NNI. If youhave enquiries or suggestions, contact Dave at [email protected].


INCOMING 1 John Andrews, Editor of SAM 1066's New Clarion

Hi Bernard,Pleased to hear theNewClarionhasa following, itmakesthe effort worthwhile.Thanks for copy of AVANZ News, a really good effort, Iwish I could get the same picture definition with the NewClarion and still keep a reasonable file size. The conceptof publishing in Landscape is excellent, it makes a wholepage readable. Iwould like todo thesamewithourNCbutI know many people print it out to book form for fellowmodellers. At one time if I published an issue with morethan 50 pages one modeller, who used to print out 6copies for friends, said he had to iron the pages to keepwithin postal charge limits. Things have changed sincethen.I've alwaysmaintained that contestants want to see a fulllist of results, the also rans like to know where theyfinished. I do not like reports that only list winners.I may pinch some of your content sometime if I may?Please feel free to purloin some of mine if anything takesyour fancy. Please keep me up to date with AVANZ.I will try to put a picture package together for you from ourNationals at the end of this month. Please feel free toremind me if nothing turns up.Attached a few pics from Sunday's BMFA 4th area compat North Luffenham. Pic ID's I think they are obvious.- Flight line, same number of cars this side of runway.-Yours trulyassemblingPinochio forMini-vintage, lost formost of day after monster themal on second flight, 6+minutes, DTd OK but would not come down.- Ivan Taylor, scale man with rubber powered Mosquito.-Yours trulyagain,withbetterhalf, havingmade flights forSAM2001 International Tomboy eventRegards,John A.


INCOMING 2 Neville Mines

Whilst searching around the web for Ray Malmstrom's designs I came across the July / August AVANZ newsletter with the Push Up planin it. I recall buying the Model Aircraft magazine in which that was published, and in the write-up with it Ray stated that you could write tohim for a copy of the drawings of the "crew". So, with the enthusiasm of a 13 year old I did just that. Attached are the drawings he sentme and the letter that accompanied them. I thought you may find them of interest. Regards, Neville Mines.


FUTURE EVENTS

RC Vintage Contest and Rally Schedule 2016/2017

September 10, 11 NNI Contest and Rally JR Airsail

October 22, 23 NNI Contest and Rally Blackfeet

November 19, 20 NNI Contest and Rally Tuakau (TBC)

January 3 F 7 National Championships Waharoa

February 18, 19 NNI Contest and Rally JR Airsail

March 18 F 20 NI Championships Levin

and Gareth Newton Memorial

April 22, 23 NNI Contest and Rally Tuakau (TBC)

May 7 (TBC) Bob Burling Memorial Levin

May 20, 21 NNI Contest and Rally Blackfeet

Event Schedule for 2017 North Island RC Vintage Championships at Levin

Saturday 18 March Sunday 19 March Monday 20 MarchVintage Precision Vintage E Duration Vintage Open TexacoClassical Precision Vintage 1/2A Texaco Vintage E TexacoVintage IC Duration Vintage 1/2E Texaco Vintage A TexacoClassical IC Duration V and Cl Scale Texaco** Classical Electric DurationClassical 1/2E Texaco* Vintage E Rubber Texaco Tomboy ETomboy IC

*New event : Classical 1/2E Texaco will be introduced through a One Design event using theJumpin’Bean design – see announcement Page 8

**New event : See announcement Page 8

RC Vintage Event Schedule for 2017 National Championships Location: Waharoa Domain

Day 1 Day 2 Day 3 Day 4Vintage Precision Vintage E Duration Vintage A Texaco Vintage Open TexacoVintage IC Duration Vintage 1/2A Texaco Vintage E Texaco Vintage E Rubber TexacoClassical Precision Vintage 1/2E Texaco Classical E DurationClassical IC Duration

FF Vintage Event Schedule for 2017 National Championships Location: Proctor Road

Day 1 Day 2 Day 3 Day 4 Day 5Vintage CAT Glider Vintage Rubber Vintage Glider Nos Rubber PrecisionVintage Power Nostalgia Power Small Nos/Vintage Power Nos / Classic Glider Classic Power /

(Combined) Rubber (Combined)


FUTURE EVENT 2016 MIMLOCT Saturday August 6th at 4.00am

Caroline AmbroseMartin AmbroseSam Burke CANAl Yuhasz USABrian Ross USAJim Norfolk CANGary Hinze USAJim Bair USADottie Bair USATom Ersted USAStu Cummins USAGary Hunter CANLes Sayer CANJean Sayer CANJanet Moseley CANJim Moseley CANJean Andrews USADick Strang USABob Morris USAJim Polles USA

Carol Dennis USANeil Dennis USASue BatkinBarbara JonesJohn JonesRon MarkingColin McKenzieTia Osborne (aged 8)Dave PowisJohn RalphDave ScholefieldPeter Brecker GERBobby Mathison USAJimmy Welch USAJudy Welsh USAMarjorie Mathison USAJohn Tate USAFran Hurd USASteve Kolet USAMike Ose USA

Dianne Tate USADean Giaceopassi USAGarrett Sisk USAJanelle Sisk USAPeyton Sisk USATravis Sisk USADick Roddy USAReese Otts USARon Boots USAMike Myers USAGary Acord USALuke Napier USAJim Lueken USADave Gee USARicky Bould NZPaul Evans NZMartin Evans NZHildur Lundhaug NOROle Torgersen NORPaul Burdett

Keith MacDonald CANJim CowleRobin WillesMargaret WillesAlex CameronPete CameronTom ThompsonIan LisseterMartin StonelakeKen TaylorBob TaylorHoward FurnessMalcolm JaggerDavid LambertCedric dela NougeredeMary dela NougeredeRod GreenMike BransonRoger MarplesMike Eyre

Samuel MattheyJack DarbyTony TomlinJohn PrivettTim MountainPeter MichelJamie LambertFrank ThurlowDerry EggsJohn JonesMike ParkerYvette WilkinsonPaulo Rossi ITALYRoberto Viti ITCarlo Casale ITGiuseppe Moschini ITSimone Ghilardi ITPaulo Riboli ITLory Riboli ITGianMario Cella IT

Fabio Suardi ITMauro Cella ITMarco&Laura Pagani ITDon Ratzlaff USAJon McVey USAPaul McIlrath USARick Knight USAAllen Shields USABernard Scott NZSu Scott NZBarry Woodbridge USAJoe Rosenthal USATerry Herrera USABert Halter USAEd Baxter USAEric Grigg CANKevin Grigg CANHeather Grigg CANPeter&Val DicksonMilan Jezik SVK

Bohus Jezik SVKMarek Mach SVKAlena Rabekova SVKPavel Rabek SVKAdam Jakes CZLubos Koutny CZJulius Kakos SVKKarel Osmera CZAndrej Janovec SVKViliam Valent SVKLudovit Pec SVKMiroslav Dvoracek CZRay MillardWendy MillardPat Jupiter USALee DucklingFred SmithAlby HunterJohn ClintonCould B You

CLOUD TRAMP MIMLOCTThis year's Memorial InternationalMass LaunchOfCloud Trampswillbe, for NZ fliers, on the morning of Saturday 6th August at 4:00 AM.Asingle flight isall that isneeded, so it's possible toslipdown to the localpark just before the synchronised hour, make your flight and be backin bed before you are missed. Sure, out there it will be dark, cold, andprobably wet, but what's that compared with sharing a simultaneousmodelling moment with like-minded modellers around the world?Interested in becoming certified for the growing list of participants?Check for details, plan and helpful hints in AVANZ News 143 or athttp://www.mikedparker.karoo.net


INTRODUCTORY EVENTS at the 2017 VINTAGE CHAMPIONSHIPS

Vintage and Classical Texaco Scale andClassical 1/2E Texaco classeswill be flown for the first time at the NI RC Vintage Championships next March.They will also be included in the April and May NNI events that follow and, givensufficient interest, at the 2018 Nationals.

Scale Texaco already has three starters, and it is hoped that many more fliers will beencouraged to participate in this event. Allan Knox‘s article on the class starts on page 11and suitable subjects will be presented over the next few issues. There is no shortage ofgood-flying, easy-building subjects, as Allan points out. Remember that Scale Texacodoes not demand scale accuracy because we build according to the plans of the Vintageand Classical periods when many subjects were drawn up for flying characteristics ratherthan exactness. It is the Texaco element that is the main emphasis, and because of theway our rules have been worded, this can be approached using any one of three poweroptions.

Your entry could be powered by a Cox .049 - in effect a 1/2A Texaco model from a scaleplan. Alternatively, it could use the option taken from Open Texaco where fuel is allottedaccording to wing area. For those who don‘t want to be bothered by fuel residue, it couldtakeanE-Texacoapproachusing thebatteryallowanceof this class.So, thereare options,even before getting to the choice of subject. There is no scale judging in this event, butat the 2017 Champs a special Concours d‘Elegance award will be made on the basis ofoverall appearance, this being decided by the votes of all fliers at the Championships.

Classical1/2ETexacohas rulessimilar toVintage1/2Ebut theeligibledesignsare from1951-75 and there is no age bonus and no landing bonus. To theCommittee's knowledge,no-one has yet built for this class, so this makes it a suitable candidate for making the firstofficial event a One-Design Contest. This should give Classical 1/2E a good kick-start atthe 2017Champsandat the timeofwriting, there are five starters for the event.The chosendesign has to be economical, quick and easy to build, and have the potential to remaincompetitive when other designs appear at later events. The design considered to bestmeet requirements is Jumpin' Bean from the Aeromodeller of January 1955. Built to 42"wingspan, the wing area is 223 square inches, right on what has been found to be a sweetspot for Vintage 1/2E Texaco. As a bonus, a second use for Jumpin' Bean would be inClassical Precision in which Graham Main's 2015 Nationals win with a Gigi showed thatsmaller models can be competitive.

Gwyn Avenell of Avetec can supply laser-cut Jumpin' Bean kits for $64.40 plus postage.These are very complete (see contents at right) and using one will greatly speedconstruction. Orders may be placed directly with Gwyn at [email protected] pdf of the plan is available if you wish to print your own, or full size plans will be availableat cost - both from the editor.

As a further incentive to build for theOne-DesignEvent, therewill be a drawat theChampsto select one Jumpin' Bean flier who will have the cost of his kit refunded.


JUMPIN' BEAN Peter Wyatt Aeromodeller Jan 1955


Waikato Nostalgia Champs 8th May 2016 CD Bernard Scott

PRECISIONStan Somerfield 218Bryan Leeves 176John Dowling 151John Butcher 127Kyla Fisher 113

GLIDERRex Anderson 256Kyla Fisher 93

POWERRex Bain 360Bernard Scott 337

HLG / CATJohn Butcher 226Kyla Fisher 224Jan Butcher 173Terry Tank 152Bryan Leeves 88Eric Hulley 81

RUBBERBill McGarvey 240Rex Bain 240Bernard Scott 222

TOP LEFT: Box of HLG and CAT models for Eric, ourbudding junior. Keep them coming !TOP RIGHT: Contra-rotating auto-gyro had even thebuilder wondering. Terry did get it up and away forsome entertaining flights.LEFT: Editor's tree-loving Shadow did it again. This isthe model that lived in an Otago tree for a couple ofweeks after the Balclutha Nationals. Farm managerJohn brought up a tractor with an elevating scoop inwhich he lifted his son Eric high enough to dislodge themodel.RIGHT: Bryan's Modelair Kea never fails to please.Flew well and looks great in the air.


MODERNAIRE 57 The design on the new AVANZ logo Bill Moffet


MODERNAIRE 57 The design on the new AVANZ logo Bill Moffet


We now have new rules for Scale Texaco thanks to the remitthat was passed at the Nationals. I’m hoping it will bepopular. I certainly enjoy my little 1/2A Chiltern DW1 whichwas built for the 1/2A Texaco class.

Imagine, a good looking scale model that you can proudlytake down to the strip on Sundays to fly with all those clubmates flying around with their scale foamies, and you alsohave a great looking competition model for vintage days.Who knows, do a good enough job and you could even fly itin scale contests ...….

The new rules allow a huge range of potential models. Anyplan, R/C or FF scale, published before 1976 is fair game andyou can even convert a rubber scale plan thus opening up allthose light scale designs that were so prolific in the vintageera. Also, what about those great little scale models fromthe 50s designed for small English Diesels? They may nothave flown too well as free flighters but with the addition ofmodern lightweight radio they would be ideal. Remembertoo, you are not confined to just rudder and elevator, inScale Texaco you can make these models full house usingsome of the cheap as chips servos from the likes of HobbyKing.

There are two options for IC power plants, the ubiquitousCox Babe Bee, or anything else. Fuel economy is essentialfor Texaco events so I recommend a 4 stroke glow or qualitydiesel like a PAW F in other words, motors that work for AFTexaco and Open Texaco. If you are adventurous, you mighteven try spark conversion of a 4 stoke and move to petrol

which has the potential to double run times.

Models with powerplants other than the Babe Bee have a540 second target flight time with their tanks set up as inOpen Texaco, that is, 1cc for every 50 sq inches of wingarea (rounded down to the last full 50 sq in) as measured byNZ rules. In Open Texaco we fly a 15 minute maximum,always a hard ask, but for Scale we have a easier target thatis achievable with the right model and engine setFup.

What would be the right size model for nonFBabe Beemodels? I think something around 60 inches, built down to8 oz sq foot would be good. Anything bigger is likely to beabove minimum loading due to the cube rule (*). So let’ssay 60 inch, 500 sq inches of wing at 8 oz per sq foot thatgives a weight of 28 oz. This would be great for a 2.5cc PAWBB RC. Or even an OS20 4 stroke if you build light enough,though the 4 stroke is likely to weigh twice as much as thediesel.

Babe Bee powered models get a 120 sec bonus on eachflight so their maximum is 420, a minute less than in 1/2ATexaco. This should be achievable despite the drag of scaledetails if you build to around 300 sq inches at 16 F 17 ozs.Set the Cox up with a big prop such as a 9x4.7 Slow Fly andwith a run of over 5 minutes, Bob’s your Uncle. (Bernardpublished information on this set up in AVANZ News 147)

All models can also score 20 points for each spot landing.

As for a models, there are thousands of designs out there,but monoplanes with reasonably high aspect ratios and bigwings would be best. Think motor glider and you get theidea. The little light sport aviation aircraft of the 30s and 40sare also good as they had to make do with very low powerengines so had to be lightly loaded and efficient. Someexamples: Dart Kitten, Klemm, DH Moth Minor, BA Swallow(my favourite) and there are many more. I like theSchweizer SG 30 glider tug with its long high aspect ratiowing.

If you want a more universal contest model then that ispossible too. Choose a scale IC power free flight model

design that is Vintage and qualifies for normal Texacoevents. Provided you use only rudder and elevator flightcontrols you could fly Vintage Precision and Vintage ICTexaco events with your scale model.

I need a new 1/2A Texaco model because the Chilton is a bitbig and heavy so I’m going to build a Piper Cub from a 1940Megow plan that will do for both Scale and ½ A Texaco. Ithas extra dihedral on the plan and will be lovely on rudderelevator at about 45 inch span and 16F17 ozs.

Where do you go for plans? Old Aeromodellers for thoselittle diesel scale models or, if you are like me, then straightinto OuterZone on the Net. If you can’t find somethingamongst the thousands of free plans then you are hard toplease! Remember that you can scale up and down to suitand amend structure within the rules. I always recommendbeefing up undercarriage wire sizes and tie the gear intosubstantial structure to survive those spot landings.

That’s it then. Have a go, there is something very specialabout building a scale model and now you can get to enjoy itin the Vintage competition scene too.

Remember there are at least two opportunities to fly TexacoScale in the NDC calendar and in time, if we support theclass, then it will be flown at regular contest weekends.Perhaps best of all, you will get to share some sport flyingtime down at the club strip and have a chance to introduceclub mates to a class of Vintage flying they can relate to.

Allan Knox

VINTAGE SCALE TEXACO Allan Knox

(*) Cube rule. The way I think about this is F if I scale up amodel to twice the wing span it will have 4 times the surfacearea (2 squared) and 8 times the volume (2 Cubed). Nowassuming the same materials (same density) then weight isproportional to volume so the model is 8 times as heavy!Now wing loading weight / wing area. Let’s say our modelwas 8 oz/ sq foot before scaling up F when doubling thespan, its loading goes up 8/4 x 8 = 16 ozs/ sq foot. Darn!


CURTIS ROBIN Suitable for Scale Texaco MAN September 1961


Step OneWhen you purchase the 049 engine it is best notto try to run the engine. Start by disassemblingthe engine. This is a simple five minute job. Pulloff the plastic pick up tube. It is usually hard.Throw the tube away. Assumingweare using anold Babe Bee, pull out the retainer clip andremove the reed, usually a copper one.

Step TwoPut all the parts in some type of cleaner. I usecarburetor cleaner with a dip basket. Let it soakfor one to two hours. Don’t leave it overnight orforget and leave it for a long period of time or theparts may become tarnished.Step ThreeWhenparts are ready to comeout, put on rubbergloves as the carburetor cleaner is toxic.

Find a cup or a can and fill it one half full withdenatured alcohol. This is less toxic thanmethanol alcohol. Methanol can be absorbedthru the skin and cause health problems. Atoothbrush and Q-tips are good tools to cleanparts. Clean parts, then pick out the venturigasket and head gasket carefully. The headgasket can be reused. Give special attention tothe back plate. If you have compressed air, blowout the venture passage and fill tube.Step FourThe goal in putting this engine back together isto make sure it doesn’t leak fuel or air and has apick up tube that completely empties the tank.The pick up tube requires a drill press and alength of aluminum 1/16 outside diameter tube.Step FiveTake the back plate and put it on the drill presstable.Chuck upa1/16drill bit and set the stop onthe drill press so the bit can’t go any deeper thanthe casting. The nipple is protruding fiom thecasting 5/32 of an inch. You are going to drillinside this nipple 5/32 deep. Go slow and becareful or your drill bit can come out the side.Don’t drill too deep or youwill get into the needlevalve housing and Venturi. Bend a l/16 diametertube to clear the tank intake tube and cut thelength so that it is right on the bottom of the backplate on the tank line. Rolling the tube with arazorbladeorexactoknifemakes thecutting thiseasy. Sand with fine paper and make sure thereis no foreign matter in the tube.

Step SixGluing the tube in the nipple is one thing I havenot perfected.Most adhesives including JBweldwill not hold up toalcohol andnitromethane.Thebest I have come up with is to carefully glue thetube in with JB weld. Be careful to put a smallamount on tube only. Sanding the tube helpsadhesion. Let cure overnight.

BUILDING A 1/2A TEXACO ENGINE 1 from SAM Speaks, April 2016


Step SevenNext put a small amount of silicone around thenipple. While it is still wet slide a 1/4 inch heatshrink tube over the silicone and shrink this toprotect the JB Weld. Even if the J B weld fails,the tube will still work pretty well.Step EightThe tank is next. The back plate and tank almostalways leak.Oneway to solve this is to clean thetankgroove.Fill thegroove1/3 to1/2half filllwithgasket silicone.Work around with a Qtip and letcure overnight.Step NineNext install the reed in the tank. Thebest reed touse is a stainless steel reed. The old copperreeds work pretty well. Do not use Teflon reeds.They work poorly at lower rpms.Step TenBack plate screws are always a problem withthreadsholdingall kindsof foreignmatter.Anicetouch is to chuck them up in a drill press or latheand file off the sharp part of the threads leavingthe last 1/8 inch in full thread where it goes intothe crank case.Step ElevenNeedle Valves all seem to work equally well.The important thing to do with a needle valve isto cut or paint an indicator line so you can seethis when you tune the engine.

Step TwelveNext is the Venturi Gasket. Make sure thegasket is new. Either buy one at the Cox Supplyor you can make your own with black fuel tubeslid inside of a brass tube. Using a razor blade,cut thin gaskets off of the fuel tube using thebrass tube as a guide. It may take making morethan one to get a good one. I find it easier to waxthe razor blade. It cutswith less drag andmakesa truer cut.

Step ThirteenReassemble the engine with a new crank caseto tank gasket. Oil the piston and crank. Installcylinder and piston in the crankcase andassemble tank with the back plate. That shouldcomplete the assembly.Last but not least—Fill the tank with fuel andcheck for leaks. One spot to watch is the backplate screws. If one is leaking, remove it and puta small amount of silicone on it. The engine isnow ready to run.

Editor: Thanks to JohnButcher for sending thisarticle. There was as much again before whatappears here, dealing with the best motors toselect parts from, but as these motors areunlikely to be available here, this section wasomitted.Should anyonebe interested in readingit, I can email a copy on request.Comments:Step 6. Using JBweld or any other adhesive forthe 1/16 tube is unnecessary for plasticbackplates as the tube can be a force fit in thehole if this is drilled carefully.Step 9. Teflon andmylar reeds have been foundto work very well at low rpm (below 5000 rpm)in all the motors I have tuned.Step 10. Altering the backplate screws is amodification that is outside NZ rules.

1/2A Texaco ...

BUILDING A 1/2A TEXACO ENGINE 2 from SAM Speaks, April 2016


WORK IN PROGRESSWhen it's not parked up a tree, the old Shadow does ok atVintage FF Precision, but recovering won't cure its fuelsoaked wood or its general tattiness. Having spent manyhours over the past ten years coming to accept its peculiarflight patterns, it seemed right to build another one - exactlythe same, but different. No more fuel saturation, the newone would be electric.

Possible pitfalls were considered, and a list of desirablefeatures was drawn up1. Adjustable motor run duration2. Motor speed control3. Dethermaliser4. Power cut-out on landing5. Fused power supply6. Battery accessible and of a common size.

1 - 3 couldhavebeensimply handledbyacommercial timerfor electric models, but I wanted to meet theserequirements, and the other three, with traditional,mechanicalmeans. The result is a rather heavy and clunkyset-up (think Arkwright's shop till rather than a moderncheck-out counter) but it works.

A trip-wire, arrowed at right, contacts the ground before thewheels, swings back and cuts current through the frontmicroswitch. The rear microswitch is held on by the pinkdisc which swings out, timed by the KSB,to cut motorpower. DT is activated in the usual way by the KSB timer.

The Voltaic Shadow is now ready for trmming.

B.Scott

Micro-switches closed Micro-switches open


COVER STORIES


BRITISH, JAPANESE and CONTINENTAL .049 ENGINES Pt.1 Chris MurphyIn the last column we looked at the heydayof 1/2A engines in the USA, a periodspanning roughly 15 years or so fromca1950 until the mid-1960s when themarket had been saturated and went intoslow decline. This decline spanned some30 years through into the late 90s and onlythe arrival of small electrics in the lastdecade really finished it off. By the mid1960s the US 1/2A market was firmly in thehands of Cox for both engines and RTFmodels, and Testors McCoy for RTFmodels.

Herkimer OK engines was still in business,but was largely an unseen player. Cox wasgarnering the competition glory whileTestors collected the accolades for RTFinnovation and development.That a huge market existed for small cheapentry level glow engines did not gounnoticed in other parts of the world, notleast because in the post WW2 era largenumbers of US military personnel werestationed in the UK, Germany and Japan.As a result, modelers and manufacturerswere exposed toUSmodelling trends eitherthough servicemen modelers, or through

US magazines such as ‘Model AirplaneNews’, ‘Flying Models’ and ‘Flying Aces’.

The financial aftermath of WW2, withsevere limitations on currency exchangeand tight restrictions on imports, coupledwith strong protection of localmanufacturers, meant local manufacturersin the UK, Europe and Japan sawopportunities in what was a new andgrowing market.

The 1950s was a time of great publicinterest in aviation, and aeromodelling wasa recognised aspect of this interest.InGermany and Japan both large and smallmanufacturers ventured into the 1/2Aarena. In Japan thewell established brandsofFuji andEnyaproducedboth049and061sizes, Fuji being content to follow the well-established style of early 1950s US 1/2Adesigns and Enya initially opting for reedvalves.

Fuji also saw the merit of producing smalloutboards, following Atwood and Allyn inthe US, producing 049 and 061 outboardsbased on their aero engine-and continuing

in later years with larger .15 and 19 sizes.Smaller firms such as KO, which hadlargely copied OK and Ohlsson & Ricedesigns for its larger.19 and .29 engines,produced a range of diesels in .049, .09and .15 sizes-of which the .049 owedmuch in style and design to the radialmount McCoy .049 ‘Duroglow’ diesel of1953.Interestingly, OS, as with Fox in the US,stood aloof from this new market, and didnot get involved until around 1961, whenthey produced the exquisite OS Max 6, aminiaturized OS Max in every respect butit was a case of too little, too late…..andmost importantly, too expensive! TheMax 6, just like the Fox 049 FAI onlysurvived a couple of years in the market.

Meanwhile, Fuji moved on to morecompetitive areas such as generalpurpose R/C and C/L motors, focusing onthe economy end of the market andproducing a range of enginesin .099, .11, .15, .19, .21, .25, .29, .35and .40 sizes. This was no doubt both asa consequence of better exportpossibilities in the US and UK and also asa result of competition from Cox in theJapanese home market.

An early sand cast beammount Fuji 049 from the1950s. Later models hada combined beamFradialmount, and the lastmodels had a radial tankmount.

Mid 1950s diecast caseFuji 061 with beam andradial mounts

First model Enya049Freed valve,‘square’ case

First model Enya 061Freed valve ‘round’ case(cf the ‘square case’ 049 model)

Enya 06FII frontinduction (thesame c/case alsoserves for an .08and .10 model)

The 1cc OSMaxF6 firstappeared in1961 but failedto make muchheadway in theUS marketF


BRITISH, JAPANESE and CONTINENTAL .049 ENGINES Chris MurphyEnya continued with 1/2A engines right upinto the 1970s, the rear reed valve modelshaving been replaced by front inductionmodels in both standard and integral R/Ccarb variants. The .06 model also beingavailable as a .08 and a .10, which makeslittle production sense in terms of theexisting long established and wellperforming Enya 09 engine. There is abelief that these ‘odd’ sizes were onlymadefor the domestic market, and neverexported. Both the early reed valve andlater front induction .06 engines were alsoproduced as diesels, but apparently thiswas never applied to the .049 models.There was interest and a range ofmanufacturers large and small in bothGermanys, although those in EastGermany were constrained as to what andhow much they could manufacture. In thewest, Webra was the largest manufacturerand from 1954 produced the .048 Piccolodiesel, a compact little unit that owed a lot tothe 1953 McCoy Duroglo.

Later this engine evolved into a beammount red head version and finally in themid-60s into a plain head version equippedwith a spring starter that was still available

into the early 1970s.

ThePiccolo glowwas introduced in 1956, inresponse to a request from Schucho-Hegifor a suitable power plant for their ARTFC/L trainers. The Piccolo glow representeda new design, while showing Atwoodinfluence, and delivering a similarperformance, peaking at an unusually high(for the time) 18,000rpm. The Piccolo glowdesign formed the basis for the last modelPiccolo diesel, suggesting that it wasinherently a much better design than theoriginal Piccolo….!

Jaguar diesels were produced in smallnumbers in 0.5cc, 0.8cc and 2.5cc sizes, allto a common design, with black heads andspinners, and with the almost standardGerman layout of both beam and radialmounting lugs on the crankcase (also usedby OK and Wenmac in the US).

The other big manufacturer was HansHornlein, producing a range of diesels forthe big Graupner company from ca 1951onwards. His ‘Taifun’ brand engine rangewas well marketed in NZ where by somequirk of distribution it was still possible to

find examples of the 1cc Hobby diesel onshop shelves right into the 1980s. But, hisinnovative and distinctive Foxie 0.44ccglow of 1960 never made it into productionas Graupner had acquired the Europeandistribution rights for Cox and did not wantone of their own products competingdirectly with the Pee Wee.

So, this distinctive little engine with reardisc, not reed valve, never made it to theshops. Many years later, Ronald Valentineproduced a number of versions using a mixof the original and his own produced parts.It is believed that parts for 200 Foxies weremanufactured, making it a rare beast. TheValentineunits came ina rangeof colours inboth diesel and glow versions. So, theGerman contribution to 1/2A was relativelysmall, with only Webra getting an .049 onthe market in numbers.

The first modelWebra .8cc Piccoloappeared in 1954,shows McCoy 049Dinfluence

The second model Piccolo went to beam mountsbut retained the red squat head shape

The final modelPiccolo acquireda spring starterand was stillavailable intothe early 1970s.

The Piccolo glow wasdeveloped by Webraca. 1957 for SchucoFHegi RTF C/L modelsFthe crankcase alsoserved for the final1960s model Mk3Piccolo diesel.

The German Jaguar0.8cc followed the samelayout as the larger2.5cc and smaller 0.5ccmodels; manufacturedby Josef Schmidt inMunich.

0.44cc Taifun Foxie

Chris's descriptions of thesebeautiful little engines willcontinue in the next issue


RED RACER 1932

RC version of the Red Racer (above), found at:http://pulling-gz.blogspot.co.nz/2012/08/rc-modeller-plan-and-article-series_5246.html


RC LEADER BOARD To 1st July 2016

Vintage Precision B.Harris, G.Meads, P.Hall, A.Knox 8001= Brian Harris Bomber Tuakau 600 + 2001= Allan Knox Lancer NDC 104 600 + 2003 Don Mossop Bomber Nationals 600 + 1994= John Butcher Miss Fortune X Tuakau 600 + 1974= Stewart Cox Playboy NDC 104 600 + 1976 David Crook Playboy Nationals 600 + 1937 David Gush Miss Fortune X NDC 104 600 + 1918 Stewart Cox Playboy 8 May 600 + 1899 Graham Main Miss Trenton III Nationals 600 + 17110 Stuart Lightfoot New Ruler Champs 600

Vintage IC Duration 2014 R.Anderson 13081 Bernard Scott Playboy Cabin Nationals 780 + 4472 Allan Knox Cumulus Nationals 780 + 3333 John Butcher Miss Fortune X NDC March 780 + 3114 David Thornley Bomber Nationals 7805 Rex Anderson Playboy Nationals 7216 Gordon Meads Playboy Senior Tuakau 6957 David Gush Miss Fortune X Tuakau 6638 Stewart Cox Playboy Nationals 6369 Allan Baker Zipper Nationals 45010 John Selby Playboy Nationals 391

Vintage E Duration 2014 B.Harris 15121 Don Mossop Playboy Nationals 9242 Bernard Scott RC-1 Nationals 9153 John Butcher Miss Fortune X Nationals 9024 Keith Trillo Stardust Special Champs 9015 Allan Knox Scram Nationals 8936 John Warner Playboy Nationals 8707 Rex Anderson Anderson Pylon Nationals 8338 Stuart Lightfoot New Ruler Nationals 8139 Davis Crook Bomber Nationals 80510 Brian Harris Bomber Tuakau 800

Vintage 1/2A Texaco 2016 J.Butcher 22901 John Butcher Miss Fortune X Nationals 1500 + 7902 Bernard Scott Stardust Special Nationals 1500 + 7773 Allan Baker Slicker Nationals 14944 Rex Anderson Playboy Nationals 13785 Keith Trillo Skipper Nationals 13776 John Selby Playboy Nationals 12617 Allan Knox Skipper Nationals 3928 Martin Evans Miss Philadelphia IV Champs 2399 John Ryan ? NDC 83 210

Vintage 1/2E Texaco 2016 K.Trillo 31881 Keith Trillo Stardust Special Nationals 1480 + 17082 Bernard Scott Bombshell Nationals 1480 + 13253 Rex Anderson Tomboy Nationals 1480 + 12354 Wayne Cartwright Arrow Nut Champs 1480 + 11635 John Butcher Miss Fortune X NDC April 1480 + 9956 Dave Crook Playboy Nationals 1480 + 9337 Martin Evans Brigadier Champs 13248 Tony Gribble Stardust Special Tuakau 13019 Mike Rice Tomboy Nationals 118210 John Selby Playboy Nationals 614

Vintage A Texaco 2016 A.Knox 31691 Allan Knox Lancer Nationals 1860 + 13092 John Butcher RC-1 Nationals 1860 + 123 Charles Warren So Long Nationals 1860 + 7554 Allan Baker Scorpion Nationals 18525 Ian Munroe Simplex Nationals 18496 Bryan Treloar Airborne Nationals 18407 Rex Anderson Cloud Snooper Nationals 16988 Bernard Scott Simplex Nationals 15929 Graham Main Simplex Nationals 152110 John Selby Turner Special Nationals 836

Vintage E Texaco 2012 W.Cartwright 33251 Keith Trillo Stardust Special Champs 1860 + 6942 Wayne Cartwright Cruiser Champs 1860 + 5733 Rex Anderson Kerswap Champs 1860 + 3694 David Crook Bomber Nationals 18605 John Butcher Miss Fortune X Champs 18556 Allan Knox Scram Nationals 18327 Doug Baunton PB-2 Champs 16988 Rex Anderson Kerswap Nationals 16519 Bernard Scott Bombshell Champs 1616

Vintage E Rubber Texaco 2016 J.Butcher 31171 John Butcher Golliwock Tuakau 1860 + 12572 Keith Trillo Yonder Tuakau 1860 + 9423 Wayne Cartwright Lanzo D Champs 1860 + 7414 Doug Baunton JA Skokie Champs 1600

Vintage 1/2A Scale Texaco 2016 A.Knox 7971 Allan Knox Chilton DW1 NDC 91 797

Vintage Open Texaco 2014 J.Butcher 33201 John Butcher Lanzo RC-1 Champs 18362 Bernard Scott Playboy Cabin Nationals 17603 Allan Knox Lancer 45 Nationals 9234 Ian Munroe TD-Coupe Nationals 6015 John Selby Turner Special Nationals 575

Classical Precision 2016 B.Harris 5981 Brian Harris Humbug Champs 5982 Graham Main Gigi Tuakau 5813 David Gush Tyro Tuakau 5784 Don Mossop Madcap Nationals 5635 Bernard Scott Frisco Kid Champs 5506 David Thornley Satellite 1000 Champs 3517 John Warner Spook Nationals 343

Classical IC Duration 2014 D.Thornley 11031 Bernard Scott Raider Champs 797

Classical E Duration 2014 B.Harris 12171 Bernard Scott Frisco Kid Champs 9002 Brian Harris Humbug Tuakau 8443 John Warner Texan Nationals 7294 Graham Main Gigi Champs 6215 Don Mossop Texan Nationals 6006 Wayne Cartwright Nig Nog Champs 242

Tomboy IC 2015 R.Anderson 14321 Graham Main Mills .75 Champs 6512 Keith Trillo Mills .75 Tuakau 4763 Charles Warren Mills .75 Tuakau 1944 Rex Bain Mills .75 Tuakau 82

Tomboy E 2014 S.Grant 19351 Keith Trillo 180.2S Champs 16092 Dave Crook 180.2S Champs 10693 Graham Main 180.2S Champs 9424 Bernard Scott 180.2S WFFC 845

Leader Board highest ever scores are shown at top right of events results


FF LEADER BOARD To 1st July 2016

Vintage Power R.Bain, B.Scott 5401 Lynn Rodway Playboy Junior NDC #97 309

Vintage Rubber W.McGarvey, A.Koerbin 5401 Bill McGarvey ? NDC 78 180

Vintage Glider 2013 R.Anderson 4271 Rex Anderson Oderman Nationals 3312 Stephen Wade Lulu Nationals 1953 Stewart Cox Lulu Nationals 1864 John Butcher Sky Roamer Nationals 97

Vintage / Nostalgia Small Power 2016 B.Scott 3531 Bernard Scott Dixielander Nationals 3532 Rex Bain Shaboom Nationals 3343 John Butcher Kerswap Nationals 164

Vintage Precision 2014 G.Burrows 4111= Dave Jackson Kerswap NDC 96 2701= Bernard Scott Shadow Nationals 2703 Charles Warren Tomboy Nationals 2464 Bruce Weatherall Request NDC 96 2145 Stewart Morse Tomboy NDC 96 1996 Lynn Rodway KK Bandit NDC 96 1777 John Selby Simplex Nationals 1768 John Butcher Sky Roamer Nationals 1559 Roy Gunner President NDC 96 9310 Alwyn Graves Clini Nationals 18

Vintage Catapult Glider 2012 J.Butcher 3391 Des Richards Hervat Nationals 2882 John Butcher Mayne NDC 101 2613 Ron Magill ? NDC 101 2534 David Gush ? NDC 101 2325 John Selby Hervat Nationals 2076 Daniel Warner Mite Nationals 1847 Charles Warren Hervat Nationals 1808 Ray Cordell ? NDC 101 1759 Peter Wilson Whirly Nationals 17410 Josh Warner Mite Nationals 170

Nostalgia Power R.Bain, B.Scott 5401 Rex Bain Jaysbird Nationals 5402 Bernard Scott Dixielander Nationals 4693 Stewart Morse Stomper NDC 98 2564 Lynn Rodway Stomper NDC 98 1954 Rex Anderson Ramrod Nationals 139

Nostalgia Rubber W.McGarvey, B.Scott 5401 William McGarvey Hipperson Nationals 5402= Paul Squires Max Maker Nationals 5252= Bernard Scott Flip Flop Nationals 5254 Chris Murphy ? NDC 81 3435 Alwyn Graves Clini Nationals 17

Nostalgia Glider 2015 M.Evans 4701 Stewart Cox Mad's Dream Nationals 3982 Bernard Scott Aiglet Nationals 3223 Rex Anderson Sans Egal Nationals 2954 Bruce Bonner Inchworm NDC 100 256

Classic Rubber 2015 L.Vincent 4851 Paul Squires ? NDC 82 4082 Chris Murphy ? NDC 82 100

Classic Power 2015 R.Bain 540

Classic Glider 2015 R.Anderson 540

Leader Board highest ever scores are shown at top right of events results


CLASSIC or CLASSICAL ?When referring to NZ contest events, thewords "Classical" and "Classic" are non-interchangeable: radio control events areClassical while free flight events are Classic.

BETTAIR CATALOGUE

sought by Chris [email protected]

AIR TRAILS PLANSI have purchased a full digital set of AirTrails magazines. This US magazinewas not imported in the quantities thatUK publications were, so copies rarelyturn up today. This is unfortunate, asmany excellent Vintage era plansappeared only in Air Trails.Permissionhasbeenobtained from thecopyright holder to share printedcopiesofATplans,with theproviso thatonly the cost of printing and postage ischarged.For anA4copyof aplan, senda self-addressed envelop plus one"Kiwi stamp"per plan to theeditor at theaddress on the cover. Add a couple ofextra stamps if you want the fullconstruction article.An index of AT plans is on the net -search for "Air Trails Index". Editor

I have just come into possession of anETA .29 which is offered for sale. Themotor's development can be found athttp:/www.modelenginenews.org/cardfile/eta29.html I wouldidentify this motor asa Mk III by the serialnumber, except theplug is canted whichis only supposed toapply to the originalMk I. Either way, itwould be a niceaddition to acollection. Downsidesare a missing spraybar/needle assy anda chipped exhaustport. Otherwise, it isin fairly good shapeconsidering it wasprobably made in theearly 50s and hasbeen raced. Themotor came with anold Class B teamracer which can gowith the motor ifanyone is prepared togo the extra postage.

Dave [email protected]


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AVANZ NEWSnewsarchives.yolasite.com/resources/AVANZ/2016/AVANZ News...AVANZ NEWS July / August 2016 Issue 150 Page 6 FUTURE EVENTS RC Vintage Contest and Rally Schedule 2016/2017 September