Model Builder: August 1974

feather asa tres Sa Wargame © In the development clases in AYA. ere has bean t tend to smaller malnSais over the lst few yeas. Asa rest, henwy emphasis has been plated on ate and feeding of ibs s evidenced bythe two carer puts ofthis column (MODEL BUILDER May 1974, june 1978). Nevertheless, we o sl cary aaa a sess” dance aft of vertical that the top is raked, Adjustment to rake ae made by Sacking off o tightering the backsty itsay combination The nomenclature forthe mans shown in Figure 1. Lear it for have no, patience with skippers who think fe “ete” to refer to port and starboard mains) and’ especially in the one. “Tet” and “right on the alter point Gesign cles, they ‘can make up 1 ofall at anything ober tan the lew Imajr pecentae oF the tora sil tea, You make: communication diffest i Kea result, te proper handing of main. you dow” tke a few mites to lean Sara can makelarge contributions to prope nautical terminolony boat performance. Trrany dacusion of maine we should realy suet withthe configration of the mast upon which ‘is sal is sup- ’As shown inthe prenous atls, mains can be cut in much the sameway a ibs: om 4 simple the way to “single paral al “multipaneled”. Out ex Dorted However for purposes of getting perience has (ed us to generally ose fmmesiate improvement in your boat mains of standard or Tampa cut, in ‘eed, let uscontve to say themasso order that we have a. somewhat flat that fis absolutely sight Wr needs section in conunetion with 2 Taller ib to” be suaght, in the fore and. aft_ ofthe Tampa cut or Calfornaeut. An ‘Srection, and aso side fo side (thwart-extteme amount of weather elm can ships). An easy way to check on this result Teoma maisal with flow but To ‘mount a mivor on atte block of Into it by broudsezming, and te con Wood and place (ton the deck at the sequent forward movement of the ig foot of the mast. You can then siht up can sometimes reach 9 nches to co the mast while making adjstmens 0 pensate Yor such weather helm, (Note the tunbuclles and obterve the changes Weater elm is shat amount of rudder you make to mast shape Most model which you have to carey to prevent the Yacht carry “to 2 inches of aft mast boat, when closehauied frm carrying Take, and you can check this by sing herslf up into the wind by the natural Plumb bob hung from the backside of action af the sal.) On het ‘the bob comes‘on the deck, ithe cranked in by the mast « The distance aft of the mast 2 propety balanced bout, 3 to 3 degres of rudder the tim lever on the Gls of wm Dermal aa MODEL BUILDER transmitter ought to suffice. The desire to nave the boat sic sSght tendeny to pull hewsi to weather, ‘more in the gusts and les inthe lll Tube Boat shows too vlent tendency te head up, simpy move the ene tl fig forward Ifyou mae Ito ar, you ‘wit then notice thatthe Boat wl urn {hay from he wind, when beating, 03 fist, and is sad to be exhiblng Fain RULE OF THUMB NO, 1 Wren sailing closehauled, he bottom Of the maisll should be paral, ‘enterine of the boat. This willow ‘he ar that i exhausting fom the main leach to extparalel othe boat’s center. Tine Gee Fig. 1). If the sal te over ‘eimmed, the exhaust wil beat an sng weaer snd produce the storementioned fim, swells exibiung a severly reduced dive rm themain Remember, ach ite section of sal producer 3 force, perpendicular 10″ the sal. Al thes ii fores can be added up to be ‘epresented by one big Tove: Ths force ERS” de tan we oak {then be’ esohed into two. com ponents ive and heel We want to maximize the former nd minimise the [ater The seteh shows te statement in graphic form, and compares» pood ‘man with one that is over tnmed of aaherng to Rule No, nother Benefit ‘Vis that by using te centetne sheet ing ystem common on our boats (wei overtrarees Tate) 10. position the Bottom batten propery, you wil have This wl Sacked. the sheet sliphly. Blow 3 smo amount of tw to develop in the sa recog te leech and keeping hard ft Tesch from seveloping. The FIg.2 august 1974 Pot ‘mei sal should have» fir continuous curve fom fore toraft without any “hard ‘pots cropping up”in the area of the teen, “To experiment, place your boat on Iu ide, allowing the mist 0 end Up 5 realy horeontl 4s i feasonabe. The is wl be pulled into shape by praiey much the same ay Hf they were fll of Continued on poge 65 Fig. «0 ies] R ie ‘CUSTOM AC CAR COMPONENTS Inc. HRE cuassis kit… $134.95 The Hallam Racing Enierriss chess iit how availble and Includes Chas plate engine mount ont ond assay, ear blocks and bearings itn for bumper ado mounts bar ‘ater ae recover hangers, tering override, trot over ‘te tata ae ch sy (1 enh ea oon rake (36 teeth, bate bond and liners, rt and rear wheels Sd tires, 14 inch deta rear axle body moun’ wing tubes ‘ind mounts and ereamic wing sembly. Al related har tre fareratt quay) included. Promt and ear ends tl ad ustable Alpers aalabeseparataly BODY NOTINCLUDED. Engine mount avaiable spartely (59.98). RE st Tais engines HRE 43ieurtorparse concent HIRE Inc., P.0. Box 4658, owl and crew seal, plus diecut and Printed bass and plywood, Hardware Includes combined enpne/now. mounting hardware, wees, ete. ke The INpans re nok included, but are ble aan aeceory Ki “The Maxi is 2 MBN wing, cabin type einer: model for the advanced Besiner who is eady to Gekle avons, ‘hough ie ys quite well without aeron conta. Desined for 40 engines, the Max has 2 63 Inch, wing san, 6 48-172 1/4 to 53/4 Inches long and weighs Like the pounds reidy for take. a prest deal of Fonaum, the ki features Prefabreation, with balsa punked oar ore ing, laminated fal length fae Sides Hardware an accessories are 380 Similar to te Monon, ’R‘uniue feature of the Maxi isthe Jong (standard or short semiaymmetal tectioned wing Plan show how to make this simple modification ‘which ges hotter performance and sbviouly eaves the tramporation problem, ‘Graupner is ako. offeting a com version it fr its Bell 212 Tin Jet Helicopter. The sev inches all ems required io move the ‘otor_ head sembly upward approximately 13/16 inches hus improving clearance forthe fotor blades. The company is aso ma Keting 3 set of inatabie oats forthe Bal’er other choppers. These ae Tor water of land operation, and ae great Telning gear for new helicopter plot. “The “Bugle 31.231-718 inch Long RIC tugboat produced by. Graupne. Moided plastic parts inclode the hull, bulwark, funnel ie-bost, and rudder Shells. There many ther molded plastic Ferns which asst in making # realistic rose!” of this powerful German 1g ut of Hamar Price onthe sbove Graupner models were not known at thi time, Check Sith your dre or write to Gravpner’s b Fits Veo, MeCoy, nen wit be sen a the Irvine, California 92664 Importer, Frepeh Motor Company, Ine, ent overseas. Some were asaned to he SBerry St San Francico, Calf 94103, Sth Observation and. Atack Squadron f© least one wound up in he 170) Pursuit for information onthe nearest source of those kt ofthe Philppine Army Ar Corps and pelea vey anton oN ts ICAut.. Contnve rom paar d 49 sateloans we sna Biter Hiei me tea mayen ewan nown i te pooon Scent poten Now avay dat plac rltbar on nebo {Elden the wets off ihe cod of auaesaae saenaneas zt te weds oflhe ex of top of that and replace twits treat one, This can be made fom 1 piece of Va ch da se sraced at Toa HE Ange Allene Ase fonthaled N’t’Ouerat own bt Hohe ta Ques, leva, ba You” cn bend a dnc vlan fom! Redue Uniy took one kof Both ends so at iccan be mad tone Seay with nts you wantamplciy, eho “coathange wend Wee He teaeh au Hook Pea tht we TK Of thuldlegI wa oo Ua ysuanSt ttt RStorng he OCA and separ HOE fe ABA, ad ata ecan be eed emily by holing on Tu, Sntde fodto on Slay ‘Siehanacar Fa Sh G—Samae rat Ca opr at hg ere sore ‘Seliog ==. Contnaad from page #5 ‘wind. Hook the sheets to the booms nd’notiee he distance that you peed {o alow she main boom to be off te So there you a…A few simple iodifiations that ein’ help you get more fun out of yor Jeabee cr. You Ean go a sopisticated as you Tike 25 feng’ complenty does no becomes burden rather tan al {© ‘086A… Continued from page 19 at 3 fortunate time. In WW Il the air Was won by rad engined, met meno- raft at a few places onthe sal Tt should be about 45-50 percent af of to about 10 pe the mast, and amount cent of the chord, To mow the daft forward, tighten the mana fl For baltope mains, tit means that the Si mnt move Sly in the sot forte ‘whole length. Don’t be satisfied with ‘al which gts pinched in te lt, ake it out and use some folded over ‘ang paper {0 clear the slot for free mow: Coque structure arpanes tht did the bulk‘of taining, transporting, bombing ment. To allow the draft to move at, sick the iu, We find it convenient 16 nd fighting. I warplanes lie the ‘O6ALand the O47A that showed the mount a cleat‘on the mast somewbst below the main hex, and run a Malyard way, ist 046A’s went to National Guard squsdron, though atleast eleven were from the head grommet, upto the mast top and back tothe lest. Tis seems to Work better and having downhaal for ‘Moet BUILOER luff tension ajustment, maybe because {you are more prone to fiddle with same Thing I you can reach while standing, tile he boat sl nthe wate, “Theres continual iterpay between theaeagjuntments mage tothe man Sait you adjust one you Nave made Changes tothe others simply because all three are mage to the ame chunk of Dicron, These ajusoment ae be highly competitiveor just Did youknow We Sailing can i Did you know Your present 8/¢ equipment can be used without change ? FOR THE AMYA 38800 CLASS. TP Lut tension Bis contol postion of maximum dat location. 2) Foot terion «this controls amount of draft in the lower 2rde of FORTHE AMYA 80/000 CLASS. VALKYRIE TAHOE 600 360 Leth Beam 9 in Saifmas 600.0 teal 53) Sheet tension… thi conto the amount 9f twit the ape ofthe eee, id the dvecton ofthe serve” vector for the mans “ut your boat its side again, and watch the shape of the sal change 35 You tigen the lt. What happens 10 $35 sae, VICTOR SAILsYSTEM, Ue leech? What happens at te foot? Now tighten the foot cuthal. What effec dows this have on dat location? What docs it do tothe leech? Foal, experiment wid Sheet tesion, Vout hotce the twist come out of the slat {he tension crease: You’s see the town of a “hard leech” when you Pull too hard. Tink by now yout free that levi the boat standing up on its erate inverts position, and {eying to aust the Sls doomed to fae Let erie down and you’t Team ‘what youve doing An Dour Week spent in such exploration wil Surly pay off m iden. ‘R good tek to help you with evelgping. an eve for the “Shape of speed” Ista take photos of your boat {Underway fom al angles Try especialy to take shot irom aft of the beam, Wich wl sow the leche. Also ty 0 {et some shots which show the shadow East bythe mast onto te Sally Os Wl give you a key to sal shape too. | he TH fi, and develop 1 in 133 Miredol per Kodak’ instractons, Mtr fixing and rinsing, we snip. the ry ‘exis up and. put ther i 3Soum Sige mounts for projection with Drojector aside When used. in conjunction Sith a tog book that you ae aeady Keeping (you ar, aren you?) with wind Conditions and how you et up the boat, negative tes cin be extemely ‘alusble: You cant imagine what inte. {sting thing you can ses when you have Stopped the action and an look at your boat Tor 10 minates, We routinely shoot {wo 36 exposure rolls on > day of {uneups and process them for Viewing ‘hat evening, while’ the day Is sit ‘res in our mings. “Te accompanying photographs were chosen to give you some examples of lech shapes and what yu can earn Pease forward your questions to me care of MODEL BUILDER, or direct {Red Carr, 1607 Gresham St, Spring, Va’ 2181. AUGUST 1974 Next ments we MODEL PRODUCTS BOL2orCiMsdtas Sera” wil continue our dicusion of main {ils Snd ook atthe traveler apd boom {ang is tommalnsal shape. FIR cs. [cLOUDBUSTER RACE WINGS: Conti trom pape 29 to all cements, including epoxy. ‘So completely transparent and fatter. Also try using the backing Monacote of” Solari, Use it Iti lye fom over plans ot as 2 surface’on which to mix Epoxy. It can be used over and oer kin by pecing off the big pieces, ‘recycle, another “in” thing to do. 3. Pin Magnet. Guy 2 large magnet and ‘end. the hunting and piling of ‘hye pins. Simple ad effective. 3: Neoprene nozses Het piece of fuel ‘ne over 2 fame and seth it sal ities at the center. Holl ool and cut at he thinnest par, Makes food mores for fuel fle and Bt tubes; gets a small squit of fel Into that-0 por 20 ton. “There you have it. Nine net ideas to try. Direct from the pages of “The Bat Sheet”, “The Boeing Hawks Newsletter”, and “FightplagsTM Thana, elas PRESSURE FUEL SYSTEMS. ‘Pressurized ful systems ae the way to 40 In many event. Inthe FAL Power event, there is no serious om: petit who doesnt ue 3 power system, Reany contestants aso find them dest len AMA evens, Although they ate ‘widely used, a dscussion of their sal $ion an anetoning has nat appeared in the model press for a number of Pressure systems fll into two cate sores” One is the extemal pressure System whereby the fuels forced to the engine by a distended pacifier or pen Bladder. In the other system, pressure is tuppied from the crankease of the engine to 2 metal tank, which in tum forces the fel to the vent (Of the two, the pair system i the casiest to instll andthe most dificult fo operate | wil discuss this system fist “A tank can be purchased already made up (fom Anderson Products {rom George Batman) or home-built {ram a Binky baby pacifier, Heres how Sheak into the buby supply section of Your local drug store and pick up 2 Binky brand pacifier (it would be beuer Ifyou bought actualy), Take home 2nd Temove the plas handle. Sip a Short engin (about I inch wil do) of 1/8 inch O.D. bras wing half way into the open end: of the pacer, Te the pacifier firmly onto the tubing with ‘monoflament fishing. line of heaty head. wrapping it around several times. Atach fel tubing to the other nd. of the brate tubing and run the fuel bing through your pinch-off timer (ee phot) to your engine. Tf you want to use this kind of system wits food off sie timer, you o ii See your hebly retailer YOU DON’T HAVE TO BE AN EXPERT TO HAVE FUN WITH A DUMAS KIT. Inthe air… adumas planes ‘Dumas Products, ne. 780 SouthPark Avenue Tucson Arizona 85719