| Show Model Plane FlYing E Exhibit hibit Planned o Glass Class ill in Making Grafts Crafts to Be G Medals Offered Contest Winners Winners' Joy Ushio 14 who attends the Pioneer park playground was the Salt Lake boy to enter his namo Mamo Ill Jil Tho Tele Telegram ram airplane contest b 1 He Is going to mako a a. motor plane Joy has hag been eagerly waiting over ever since last years year's contest to ent enter l' l land and even saved an entry blank h red appeared In The Telegram In 1927 Hundreds of other boys bors and girls will soon be busy mal making planes so send In your name and joIn in the tho fun In addition to the beautiful beau beau- tituS cup to bo be awarded the winning win win- ning pla playground ground and the medals to tobe tobe be awarded the four foul winners there will Ill be other Individual prizes Read The Telegram every day for new announcements The The Telegram TeleS would like lIko to see seemore snore more motor footer planes entered In the tho contest Their construction Is easy Lessons on tIlls this subject vIli appear on another page of this paper every day There will be a class of In- In at one of the tho s cnn can In Ill addition It Is planned to put on a exhibition soon just to show how far and high a model plane can fly and how ho hoto to operate them One of the winners of last ast years year's contest Is now at an east eastern rn avla- avla Lion school studyIng how to make malte real planes Another Is employed at at the municipal airport and is also a wing walker and airplane stunt man Every boy who entered the c cOntest last alt year real Is the envy of his fellows who did not enter He knows about airplane ne cOnstruction noW and calls all the different parts by their right names For an any Information you oU desire on the contest c call U Airplane Airplane- Contest Con Cori test Editor Wasatch or Miss Charlotte Ste Stewart Wasatch sateh HOW TO MAKE AIRPLANE MODEL FITTINGS By Paul Edward Garber Model aIrcraft c cOnsultant Playground Play Play- ground and Association tion ot of An and author ot of BuildIng and Flying Model Iodel Air Air- era craft ft Balsa Is the lightest u wood known fl Is lighter cork corle and about half as strong as spruce It t Is Ideal for or model aircraft and andall all all' modern records In this dUe to Its use It is used by manu as containers for shIpping ble goods such as r al and It may be procured from handlers of this product The term balsa Is Is' the tho Central AmerIcan n name me for rafts made from this wood Model makers can an set get balsa from large lumber yards ards from tho importers of foreIgn woods from aircraft factories factories fac- fac tories or from flom An aIrport It should be sawed to size and planed to a finIsh using a very sharp plane worked at an angle SImilarly when a penknife Is used on balsa the blOde should be handled with witha a slicIng stroke rather than wIth a direct forward cut MUSIC WIRE USED Metal is used for of the model aircraft fittings Small headless brads are used for propeller pro pro- peller bearings r fIttings are arc made from wire h may be obtained from hairpins paper clips clo spokes etc but preferably In rollS rOilS of music ire procurable frOm hardware and music stores Size 30 10 and 1 are most used Piano wire is sold In quarter one and one half coils costing at present 50 cents for forthe forthe the smaller coil coli which will do fo for hundreds ot of fittings Small washers are used to reduce friction In the hearings bearings they can be bought at hardware stores by specifying size 35 15 Dress f spangles sold b by notion or trimming stores also make good washers Some model makers produce prou pro pro- duce u e their o washers by taking an anice ice Jee and punching small holes holes- lii in a sheet of thIn metal then punchIng out the metal around the center holes with a ticket punch Other parts such as metal tubing etc may lay be purchased from hardware stores or 01 obtained fOr the asking from the junk boxes ot of garages ot 01 shops Small steel wire No 3 will be useful for fOI bindIng binding bind bind- ing wood and fIttings It Itis is 13 sold In spools at hardware and ten cent stores The use of fabric occurs mostly in the tho coverIng of wings For permanence China sille is preferable a It is lIght strong shOng and she sive Practically all notion stores carry this and it retails at about onO one dollar a yard and may be 00 obtained In all colors For the very light scientific models tissue paper Is used This may be the kind sold in cent 10 stores or if Ie a tougher product prod prod- tiet is desired use rIce paper sold by draftsman's supply houses or Japanese tissue paper sold by Oriental novelty and art stores Another fabric employed for cover cover- in wings s is goldbeaters rs r's skin which Is a. a very lightweight animal membrane mem- mem b brane ane being the lining of part of oe a. a cows cow's tract It can be purchased lb in sheets from model I houses but Is comparatively expensive Unc Under er the subject of fabric we wc will ill consider rubberS rubber WhIch Is used almost univerSally ally for the power powel In model aircraft The Tho best form Is 15 the rubber thread pro proCurable direct from prominent rubber manufacturers costing about one cent a Toot foot Rubber thread i is used in golf golfI I balls and it may be obtained by takIng one apart carefully Tile The thock absorber cord used on man man- carrying t is made up of lengths of oe rubber thread ad Rubber bands may be chained together tu to make up tile the desired length for a model An old automobile Inner tube may be cut up Into loops 01 strips RObber can best ho bo cu cuE when hen It and the knife are wet therefore to cut an inner tube moisten the tube and the water ater cutting along a edge maIling ing thin uniform strips Rubber bands about 3 inches in length are areus us used d to bold the wings onto some models Smaller bands known as election bands are usefUl for fOl holdIng hold hold- Ing the rubber hanks banks onto the motor fittings Stationers carry these For protecting tile the rubber hanks banks from being cut oot wh when n under undal tension by the tho metal fittings small tubber fubber tubes are used These may be procured procured pro pro- cured from opticians in the flue form of spectacle tubIng or a substitute may be found by insulation Uon tion from telephone or electric wire and using the rubber tube therein Silk thread is used for lashing parts together size A Is best One liquid used in model makIng is adhesive For this purpose ordinary glue Is sometImes used but a a. cellulose product known know as Au is much superior as it Is waterproof more more tenacious and dries dries- It may be procured a I L jl from sporting goods dealers and hardware stores Another liquid used on models is known familiarly as dope It H. is a. a preparation applied to the tho wing covering to tomake make It tight air proof and strong Various lorms of dope are used but the common among model makers is banana oil procurable front from paint and drug dlug stores Often it Is thickened with celluloid which may be in iii the form fonn of sheet or a remnant ot of some some celluloid product such a as t comb toothbrush handle etc dissolved In the banana oil A solution of oC acetone another drug drugstore drugstore store and celluloid may maybe be used Stand rd aIrplane dope Is from any flying field and may be used as It conies comes Or 01 diluted with acetone Dope is also used as ag an adhesive for fastenIng fastening fasten fasten- Ing tho fabric to the wings Col- Col also a a. drug store product can bo be used as a whIg coatIng solution An All of oC these are highly volatile and should not be used In poorly ventilated places as their fumes are stifling Light machine oil iS is ot of course useful liquid for fOl lubricating the tho model bearings Glycerin obtainable from drug stores Is used by some model makers olt their rubbers to lubricate the strands thus enabling Inore turns stored in them When giving the source for various ma materials in this article mention has liaa been made ot of general local agencies but tile the reader should know that there thele exIsts excellent fIrms who specialize in supplies for model aircraft makers Their names may be found by consulting any good boys boy's magazine or aeronautical aeronautical aero aero- nautical publication in their catalogs catalogs cat cat- will vili be found special articles for models an and 1 all the material referred to In this chapter Watch for the next article which will discuss how t to make I |
