Model Yachting Monthly: Volume 1, Issue 7 – September 1945

MODEL YACHT RACING ASSOCIAHON 1921 . ‘OFAMERICA – 1945 #o8fs:;§r::*?:!o°:f::i;:::ls:s:i;L:8:pL=;:%.i:ht£,e=:u::8:st=bdiighr°:°]:eortEe£::i#indg.reb#!:: ics”Mh°£°’tfa#:u#8S£:etehEgrbFe]t::rsi%ti8be°r:hpjp;a::S%£h°ensM?a¥8.aA:°¥:rofnot g|;foicn:t:!i::;n#::E,::aai:!i:dr:.I::a:I:;;.!,aA!i:,E:Efl;EOEnfso;:u:eeTFe:k?i#i:oal¥hi;a;o=;n:t::;a:i:::::: rotuTned if the a,ppli`.ation iB rejected. A niodel }.acht cotrtpcting in ally National Divigion&l or Invitation Regatta musL bo registered in the M. Y. R. A. A. ff|8resg¥!b:i;e:!&::ii:i:i:;ohj::=:i:s¥:hu:c;i::ix::dsh’:Eii:;I:ii:;1;:iiial¥i:a:c¥:?::Fir:hiisin:afi:#oi YOU SHOULD JOIN THE M. Y. R. A. A. BECAUSE YOU OBTAIN Protection of its Constitution, Reg`ilatiolLs, S_ailing and Batting BuleB. Prestige for your hobby.. club and country. Opportunrty to share the destiny of your chosen spol.t, mtiona,lly, a]Ld politically. locally, nationauy, inter- InductalLce into the finest comradeship of any Sport. A wider social radius of I riends and hindred spirits. Participation in Divisioml, National and Internatonal reoreative competition. A greater B&ti8£action fronL the time and 8ub8tance expended a,nd the expeL`ience gdred. YOU SHOULD SUBSCRIBE TO MODEL YACHTING MONTHLY BECAUSE YOU OBTAIN Oficial reports of w.]rat is going on. I.&test National and Ltical news. Instructive a,nd ir±ormative articles. A liberal education in all aspects of Modern nfodel Yachting. Up-to-drte plans of succossf ul }.achtg of all classes. A broad exchange of aesthetic, sc,ieutific and praoticol ideas and information. Photo reproductions of yachts in &l’tion and their skippers and their haunts. OolumnB devoted to general discussion, now ideas, suggestions and comments. SUBSCBIPTION, ONE YEAR, $1.50 MODEL YACHTING MONTHLY VOL. I SEPTEMBER,1945 NO. 7 NOTES ON THE SLIDING RIG A3¥:E¥ed°€o :X:ntfio£¥b#:£L°8¥ the Eilidlng-rig 1s timely. tion on and the celving 911dlng on t,he x-ola9s (#) So 15 also a EIpeoula~ the function of this device, benefits derived. A,t the I.eend of the oritioi8m the rig 1-a linked up with the E::: ::e:::¥ige%:6 ba::8::,h:: #:Z :B:pL:°Li=°¥±hngre±:8:::::;a:Ft:±=:: P®rB like nyself who do not approve of the appearance of a. vane stuck on the Stern of a yacht. Also~we feel that ya.ohts should not be Bo poorly deBlgned. that lt 18 necessar.y to move the mast Eiix or Seven inoheg to make them sail properly” .` In or`der to aoqualnt the reader of the habittrde of the opposition to those gears that are now Supplanting :::i::i:e:e::::::t8Lip’:#::e:hgu£= class was f irst lntroduoed, we wer.e told tha.t here wa.a a. class of yaLohtg that would have to be designed oof- ::&#yb:nfi::w8::8£±:oB¥£ihta:h:::I: %::8o;L§k¥;;::sbfag::::£L£:dbu±Lgu;: because of thlB. Eividently a, few skipper.s foulrd t,heir X-boats wer.e not so hot, unless a vane wag uged to Steer. them,and Bo vanes were then a.llowed” . And, referring to a irmlter on the subject of dynamic balance, the spokesman oontinueB~ “He wr’1teEi at real length on “dyriamio I)alanoe” a.g if tha.t would bo the objeotlve of au yacht design,and tha,t appearance a,nd simllal.ity to a large yacht Eihould £: ::C:¥r::yditfg %igat±£:o::e:a°to= what he oall8 “dynamic balance”, and I i,hink his ue)e of the the_term is not entirely oor.root. I proper to just call it Wbalanoen and think that a gr`eat many factor.a enter into designing a, y8oht other than moving the under-water appendage aft” . wei3e::r=i£::a:£t:±%6ht::|kg±8::li%; of the Braine gear and even label it “gadget” in a derogatory gense. One man wrote that from the windows of his residence he would look (i:.)ED.NOTE: .The Eilidlng rig is now permitted on the X-olags. over the ®By A.R.LAssEL zfe ya.ohtg es moor.ed ln the har- bor., and look aB he may he never Saw one with a, vane Steering gear. Slnoe he wa,a defending the approprlatenesB of the Br.alne gear., the infer.enoe is that he could Eiee a.11 klndB of boa,tEl equipped with the Braine geal`. AB to quality of veriBlmilltude ::yt:: B:# :£atheth:Lf8i:gr:±£6tr:: olasges,of which the X ig an eotype, have a cloE}e approximation of this device below deck. If we look beyond the lmpl.9Bsious of the uhinitla,ted, wo find tha,t i::nBSL:E±:8hi:€!ng£:he J:::e :¥:h:: the two Center.boards on the ffhinter_ prise” offioiany and the nRa,nger”, :=E:±::giS: :%8:h:::eB:i:I::i;t::: of the la,teral I)lame to the effort. Thel.efor.e, one may deduce that it iB yaohty to do that, but our’ rules do not oountenanoe t,he oenterboards, E}o the alt,ernatlve iB to move the mast. The prospectus heralding the a,dvent of the X-olasB did not Bpeoify yachty a,ppearance. This item, gener- ally, attaches ltBelf to the rules afterwa,rd; 1t is never defined, thus leaving a, wide field for the legal talent of the pond to pr`actioe on. EfgB:fan:#e§5;:::i:i;b§§::::::£g:i:; 1s the unoonditiorral aim. This specified balance elhould have been qualified by the adver.b “metaoentrioally”, for. this thus expl.eased aim was that orthe dark ages following Admiral Turner.a analysis of cur.ve of ar.eaB of a hull upr.ight and heeled. He had only Shown how static balance could be achieved. g:o::::a::3:i:e:ng|Sg¥mise:5::::::3 a mlsohief , for. a,fterward we find a lusty Crew, hoa.ded by a now defuont model yachting magazine, ramming the noE!trum down the throats of model yaohtE)men. In order to evaluate the statement quoted earlier, it may be said that few oontemporar.y deglgner.a dare not to oonf’orlm to the precepts of metacentrio ba,lance. I’thy the mod- ::g:::::i:::;::::e!::::::::!gi¥lo:i:E oal proof based on emotional r’e actions Solely, is an indictment. NOT ES O N THE In or.der to olarlfy the prlnolpal fa,otor ln the search for balance, that balance which nakoB the boat go whore you want lt to go, the follow lng Bpeoulation iB made. S LIZ) I NG R I a position, or where the movement of a ¥#u:: o3°g£:r%:;:fak:¥ E;u:e:.ra:E: oenfroE3:r:;:ge8e3farog:Ly±Sb:]gg:a ff:::::;::::v:n:a::E!¥a#:i:’::::: tlon for the defect, while the vane fore. ±£ef¥B€±2:±¥hoa93:B€ab:gil:£5yp::!¥ than anything labelled porfeot be- The ln-wedges oheok with the :#;W:g8:3h?haw¥¥:€o±h:h86:±±£Big:# She be brlrmod 1®vol foie\and aft, the center of the laterail plane 1g on the Bane line on the profile aB that of the buoyancy and gravity. If we, after aaolalmlng the perfection of the doBign, .try to tow the barge from the Conventional bridle w® find Should the bapg6 be trlrnmed by the lg:?,;3!eti:keEa?¥:ge Stag:e £:2:: been moved forward i8 1n an unstable £:££E±::a i:t::::? L°ns£: i:eB::£§i:u: position of stablllty, and not find- ::!si:i::::::h::m!g::;::b::v::Tt:: Bteorlng qualltle8 are improved, yet 3::tg:£!p3::ugg ::I 1:t:1:33:Egg. tow But, Should She be trlrmed by the stern, with the la.teral plane moved. aft, She becomes &s tractable a,a Mary’s ovlne Companion, and glveg the :€±gE:I o33rf±€3g:e A:n abu:£±Bgtha€ gteerB well saills well, go a, barge that steers well tows eoonomloally and safely. In all these sltuation8 She was equally ”hot” as portain9 to meta,oem tl.ic Bpeculatlon, yet that faot gave no asgiiranc® whatBoevel. how would bo the Steering, but when the la,toral plane had moved aft, She beoane dynanically balanced to a modera.te degree. Had the Bides of the ve88el been ourvilinear instead of straight the experlenoe would have been duplioated. Although model y&oht de- :ign3;=!:g fi:::: b;od::igLdi313£g lead bulb efficiency ag as a, compromise between agent for Stability and the need of a reoe891ve leading edge as a factor. in dynamic balance, :E:¥r 8:mp::±i s%g?Ly3aey°5uB:V=:¥L:: the custom and often denounce nonconformity. They are happy with ,the :=:i £%:3r I::::;Ve8obulitg:ys:£eb=:; they will be a8klng for more. There a,I.e two wnyB of Sailing a model oloBe to the wind. One method rna,y tobethe Called the “toy boat method”, -due identica.i handioapB Con- fronti]ng the Skipper of a toy boat and that of a model with fixed mast tlon”. Due to these defloiencles the only reoourge ls to Compromise the oorroot trim of the sailB ln order to Change the Center of effort. The result 18. that we of ten Bee a yacht Choked to death ag it wet.e, by the !|bf££:£#thng#:ek±:g:#h:I:+O?t±±: a,8peot 18 not very lmpr`eEislve, for guoh trim 18 a sur’® way to oon\rert pr°!E:a:¥£ef°::€h:3,±gg¥#td#%§iding :£8 S#::€8:a::::8n53:!tE::ff fag± t#et mast OIIANGES the wind. In with the strength other of words, that no :¥€ :£:ngt::mp::f:i: :i::g:eo:=1:::J be oompromi8ed for the Bake of tip- ping the Center of eff opt one way or another, and that the Center of ef-` f orb must be moved to 8ult the reactions on the hull and thtlg oompl©ment the steering device. The oo-ordirlatlon of the human mind and the hand is super.ion to any ::ii::::k:gi:5t:!::t::¥:£::;6::::;: fort fulfils a,11 requlrement8 of an ::±2¥:::6rs:±#n:h:s±::pr:FE;kgE:g its attention diverted. A Skipper of a y&oht E]o equipped does not fear to :::a:nae::3:r:gea :iE::g:ugo¥.g:::: £:: L3ge3fo%i::0:f±: :::g8:L#oih::i a split Beoond to oorreot ib. The Skippers that are a.ooustomed to use the gliding rig resent the imposition the,t foroe9 them to muddle up the trlzn of the gailB for the Sake of Bteerlng;no Eiuch fruBtratlon 18 pregent in the prototype, so why 8houl| the model suffer? For Bone of ::it?°yL€°::eBB:::i:8e:a:::Lo=n:1::; intellectual satisfaction. If Bone of uB oonBider, fac\tually :¥t£:a::::i:%:Ly6fth:hha3axsL=:eL%% 5E: g:!g:Ego:I:: th:epr:%Iiptio:eo:. wldor cleavage of attltudeB, and lf i::::, :: g;i:,1:g :: :o:::g#: oonoluBion8. that end. ThlB a,rtiole ig for EE.-.- Model Yachting Montnly VOL. I SEPTEMBER, 1945 Pwhl,bshed, Monthly by THE MODEL YACHT RACING ASSOCIATION 0F AMERICA C}. H. PARLEY, Edi,tor 87 Qu4ncy St., Medford,Mass. Subscription, $ 1.50 a7oar All rights res.erved. Nothiag that appoa.rs la this magazlno may bo reproduced, either wbolly or in I)art, without 8po6ial permissioa of the Editor acting for the MYRAA or from a contributor who r.esorves his rights` Eastern/Division P7roto by X. BauiiigttrteN A.R. I,assel IIarry E. Richal.dsoa Boston M`.Y.C. ££.hi:S=ko::a::::g:£¥;u¥:;:; Phoenix Sport Club lac. Thomas Allori Thoma.6 Al|el`, ]r. Loag Island M.Y.C. I)eeper Hudson M.Y.C. Geo. E. Steinbrecher Mill Pond M.Y.C. San Fran®isoo ELYC. (Sail) Taznes Mc Kinney A.11. Link Sad Francis¢o MYC. Cower) Paul Collet Forest Hill M.Y. C. Lt. Comm. Ronald Hoore CLUBS SUBSCRIBING 1ooCZ> Cleveland M. Y. C. Forest IIill M.Y. C. Lynn in.Y.C. Redbank M. Y. C. Chicngo fi,-Y. c. mARBLEHEAD CUP RACE (14th Yeal`) theE¥8=gt#:rngbi:E%:difedR*:P:€eso# Washington, July 15th. Wind at E]tar.t wa,a 25 miles, white squall with tor.- rential rain in the 2d hea,t. Ourry’s new Jib blew out and the malnsall then fell apart. A Bail was borrowed and bent and lasted for one houl` and then Split, go bent a Storm guit, to =::±S:c:::to;°¥;oi:¥s:y#£r:a:::I J`.Fulton, L.I.Mro scored 6 points ; gsELGg:gr’:a:S¥::€£i:E”6y¥.#i2iB:;I and is built over a form in two la,yel.8 of planking, has sliding r’1g and PRESIDENT HOUK announces that he ls definitely NOT ln the rurmlng f or re-election, ag his time will be all taken up on a new humanitarian and profeBslonal ventur.a. I a,in But.e best of luck we and full all wlBh Ted Buooesg. the We Bynohl.onous sheets, also La,ssel vane with olino-gye. The other boats were not pr.epared for the heavy wind, Z5 :S::tthawti]E±sst8;e:±tin£:::a:n±nt£# g:r:gnmi53:iy :::: E::drmB::ig: g::I; :::::Jim::rL:::e!::::::::ermw:r:Imams:e he will bo a.ble to indulge from time tr.ophy for the 5rd time. Ho ima,a home on fur.lough and got a gr.eat kick out ::I:::yp3;O];[r=ta¥±]n#s:h:;Z:g3tf8¥±: the ladies put on a sur`prlcie lunch, 1n honor of `the event, but instead of ha.ving it on the green lt had to be Crowded. into the club house. The plang of “SunklsB” or.iginal of “Sun- PAOIFIO DlvlsloN RACING sOHEDul.E M-CIASS at Berkeley, July 4. 6-M CLASS at Wilmlngton, Aug. 5 X-CLASS at Sa.n Franoisoo,Sop. 2 A-CIASS at Sea.ttle,I Oct. 7. apee” appear in thlg issue. iiiimi±+_L\.. ,I + .,,,, __ ,,.,. L]. LT-i_`.E± —– ijEi . __s-,. HANDLING MODELS PART I H Aml,ING + FROM SKIFFS * Batyndc.TF.wF.AEBEu± + All Rights Reserved hodel8 from skiff a re- quires differ.ent gear and racing ta,otios tha,n pond Ba,iling, where yaohtB are handled from the shore. A peotangular course is Sometimes uE!ed, and nay be formed of floatEI connected by ropes. In this oaBe the Bkiffa must` Stay outside t,he ropes and ha,ndle the models ONLY when they Come to the similated `ghore. In this method gpinna.kers and golf-tacking vanes maLy be uE]ed to advanta.ge. A trla,ngular Course, however., 1s t,he classic method for. open water’ sa.iling. Here the ohoioe of the I.ow boat or Skiff and the phyBiq.ue Qf the yaohtBman succe8g. are definite faotorB for A light, well-built skiff handled by a,n experienced oarsman,. can keep up with the model under most oonditions. In Strong winds it i8 a,dviBible to keep well ahead of The salllng r`ule8 used are about the sa,me as for. aotunl pond galling, and the gki|)pop must rely on Someone terms ln lieu of port and starboard. ori the ”far shore” to ta,ck his boa,t. Another. method is to Bail to windward a,nd retur.n, which gives a. beat :#.:Big, ::.tB:gI:£:ig :Pi:ig#5.* ::i:m§::::fa:::¥::#t::i:§:i:E:r¥fl The relative positions the lee oar Should just miss hitting the yacht’S counter at each stroke. The 8ane pQBltlon Should be used on a beat, beoauBo it leaves open water. for the put-about or tack. !i!ii::i:Ei:!i:;:i:End:iT:if:;ig:¥ii ing occasionally-in a skiff-race ar.e often oonfuBed by the nultipliolt,y of buoys and a, dlffel.ent starting lino and finish line. The home team, :¥±::a fkg±3i±:=: :::i::Waf8: gi:±= guests, and then wonder why the lab– ter do not repeat their visit. When the windward and return method i8 used, it Should be understood by all oontestantg that the mark be rounded to E}tarboard or pol.t, to avoid foul- :;go:Ttga3:::o:#n:flf3:o::#:?g :: oouriter-olookwlBe are understandable of skiff and model are important. bn a reach the Skiff should be to leewa,rd:, and On a run lt iB well to keep a.bea,d of the mod- :£i±€i::r3¥fag:ndsj and beside it in – Skiffs should oa,Pry a large rae- 1ng number on ea,oh side nea,I. the bow for ldentifica,tlon. When sailing a tr.ia,ngular oourBe Some gkipperg Carry a gpinna.Her that 1g stoppered\to the. rna,Bt; a string 18 pulled and the spinnaker is down, ready for use. ::a:;B:::B:i:5g:::¥a:n:i:#ieiig:: :i.the]:£i;:nv=;8±£3sW£¥u::d]::W::: vantage. Sometimes a yacht 1g back- ±iE#L= – i HA N D L I N a Mio D EI. S ¥±g:€ndw:knz£#h::i::at?°tT£:t#::£ :;pr::i:£!;e:io::g,t::a:::ga:£ey:£h± deflected from ‘ your sa,ilo strikes #:f:=::: ::g:ge&n±e:hT:rgax%8€tp%±n% sO high. IIAYING OUT A TRIANGUIAR COURSE eisA±:h:¥m:tL:::f:a::::±*8p8:thwmam::= sailing”, Bone Clubs sa,il on landlocked waters, small in size, while other Clubs use bays a,nd inlets adjacent to t`he ocean.Racing rules ar.e the sa,me in any Case, but the laying out of a course dope.nds on the Bpaoe availa,ble. If possible the coul.Eie is laid-out to avoid shoals, I.oaks and obstructions to the wind. The length of each leg depends on oirourngtanceg E:tv:::t!::gs:is3=:e i:tve::e:i::ng row-boat. I-6 to 14 Hence a of a mile oour.se of from to a leg will t)e f’ound Batlsfaot,or.y. The more toatB ent,ered ln a race, the shorter the rug°r¥EaArg::a: alto;:o£::t6naw€:&€ ward Bta,I.t between Marks 1 and 5 are at an equal distance from Mark 2.The Starting line is angled 12 degroe8. equ::8:nf::n::;? :::chru: :7% o:,e:r±¥. F ft o M S K I F F S course Should be, 1n order to _.Save time and give evel.yone a, ohanoe to :::°iunM::i [%Pe;a#:e:I 8:i::;8, +:: ::afi!g::I:¥a:S:::!i::::;:i:;;;:;; and seldom a I.un. There ls a reaE}on for this, because most yachts al.e equally Speedy on a run, provided they all get the same wind, and they are apt to bunch up at the f irst mark and get’ tangled up; further the ::g:t::go3#::e:to:Ee :E::t: wind- The Bta.rting line for a reach or a ran should be la.id out at right angles to the first leg of a oourE)e. For a wiridwal.a start, the Starting line should be laid out at a.n angle of 12 degr.eeB to the lst leg of the course, which gives a fairer start, as when several yachts Bta,rt, on the sta,rboard\taok the leeward yachts a,re AHEAD of the windward yachts. See Diagr.ams A and 8, this page. runc 8ES: :e8:X,e:i%dd:%:a::at±%w%€:: , yachts to leeward are progressively nearer I,lark 2 than the windward boat. :!a::i::::;i:sn::ean8L::n.„ ::e8r#/? _ ,- pE=E IiNTmNATz`ONAL A-OIAss MODEL „RAIAI)„ The `°Nalad” whose lines are crown in lrmd Supplement for thlB month, 1s the isolated skeg,from two to two design. 3aE¥ga:Eel:fudL:n:°=heeagBrw:±%d:e.af:PrLa&€°h±:no8::t:h;e f eathor to work in and also tends to a remarkably graceful and suooegsful Mr.James A.Potter hag draRTi g:#d:::u:n:V::¥±E:¥t#:L#::Bt:h::: selves, has added backbone outline, ra,bbet and bearding liries, Beotions of backbone and sections of the I.e- Bhor.ten up the tation centers & diBtanoo between ro- of. the vane-Bplndle and I.udder head, which ls oonBidered deBlz.able by many 8kippez.a. mova,ble keel. The Shape of the back- bone in plan view is also given. The It would be well to avoid having sail plan 18 shown on another page any pa,rt of a skeg on an A-olasB moof this i8Bue, a,nd is very detailed, del project above inter beyond the Showing I.igglng and f ittings in the ::::: E¥t|:g:1ggio :: =:gunm:::u:v?I: proper places. If the rudder pro|eots beyond the measured twEL length UNDER \IATER, g:3::I::h:::gu::;5:#:±h§!:!E:n¥fe8; a.nd an iBola,ted skeg placed at about :£::±°:L¥±£6h::Cfnad:::£.ah;H:drudb: den, of cour`se, would be as deep a8 it 1.a likely that this would bo legal-however, a ruling on this would be ::iigBt:£g8iuo::i.gay fgigg:PSpE:; ga.f e and keep the rudder well the Burfaoe of the water. under. i_i _Ti_i _*t;rfejH _r2rmriifeLflAB_ IiFH_ _S±idtlili_ AR.I_^SSEL = inL.tdc LfybLbg`LnaEn±±i_ J|dmlL=±mk._ bTtB\ or h++ frRlferf,ill_ _\iai!sjieLS_`inEitois_ut£KIEanii ABi`iro.Lgfi q=cLeLrna_vJ2g__noLai:iis±tL±±±±±±ot_ne_rmo_¢eL±± Lai^|EFuiLs`zt. + fckpLJQ&sj= THE “SUN-KISS” M-CLASS DESIGN rm[T83p;!=;#±8S:te::a:g:mffBFha°iTifu±i# £angi:#g±L£:g:;s:h8haL£3zO::?:hri£:2:: “Roschana” , rurmer-up in 1957. Ted Thol.son re-drew the lines of these yachts to oonfor’m to those of war- :E:P:on:%:::8i a±:P:£: ::%:d:I::uie:£ for.mula. Hence, an }1-Ola88 yacht Should rna,ke 2.04 naut.miles per hour when a, 500′ warBhlp makes 22.5. She is not giving away any poten- tialities due to water-line length, has powerful sections and I lat ohine line. Her lat®rial plane 19 more thain adequa,te, so that, 1f wetted surface be considered nor.e important than dynamic balance, the width of the skeg may bo reduced. On the ”Sunma,id” the last, year.’s Na.tional Champion, the c]keg 18 a mere Strut. The keels of Paul Collet’s ”Sunmaid” and How’d Curry’8 “Sunapee” weigli 15 lbs., :£`iE!i::i::l!8?::¥£;e!g:gE:i:: suit of an observed phenomenon towing 50-inch models of cliff keel deEilgng at about twice the rna,I speed. \then the junction a keel with the hull was I.ather t and the yacht towed with a de heel. the roBista,nco as oomp #I€fi.th£.t`voi’€i;v-i;i;L8ri€ Shot up eight-fold. The only v dlff er®nco was a Short but Secondary keel. The wave in the way o obligation, then b the ®1imlnation of. this seco wave; the Seal-flipper keel on “Sunkiss” representg an effort ;:i::aiso::;::::i3rf:::31:i°£g:t3£n –A.R.LASSEL L¥ + # = Rf`TE L(4-q.84+)+V3TA(42.4-2) 13.066 4 L 49.644x tr5A (4.242) i2.rj>ti299i2) I b . 21 5 3 9.3+’ RmE- LW.L 49.500 a- a Penalty . 688 .344 T4TFTtr=.L’ /.nx.RA.ciRs;i rioDfi – „A/A a – a,3,C„ „, SC SA’ L` PlhN t4`t±-V,-, vyzs:, *.or-,,o „,s, –c ,e`a.` / »-“”}`- ..’ / Sail-pla,n of “NAIAD” . 1/4 Size blueprint available from a.H.Farley, 87 Quinoy St.,Medford, MagE]. © 75¢ 10 Re’pr{uted f r;in ffddckmaker Magaz;ine,April -May ,1940 Now combined witlb MODEL CRAFTSMAN lower portion. This moderate S curve is now the mainsail luff line, and, because it will be / bound with tape, the cut, when it is made, should be y8″ outside the luff. A secondary line at this distance would be helpful in cutting, but may not be necessary. The roach along the leach curves outward from the straight line a maximum of r;ot more than 2″ about midway between the head and the clew. A fair curve should be scribed here. BY WAI.TER K. MOSS. [Editor’s Note: The first part of this article appeared in the last issue. This concluding installment tells how to finish up the suit of sails.] , Because this edge is hemmed, the cut, when it is made, should be 1/4″ outside this line. The roach on the foot is parabolic in character with a maximum of y4″ one-third of the distance back from the tack and decreasing as it nears the clew. The cut, when it is made, should be 1/8″ outside the scribed line, as the foot will be bound with tape. The mainsail cutting lines are now complete. LAYING out the the sails is the and first step, so about 3″ from selvedge, parallel to it, mark a fine, straight pencil line the length of your leach measurement-the mainsail on the left hand side and the jib on the right. With the straight edge in place, divide these lengths into four or five equal sections (depending on whether three of four battens are to be used) and draw a fine line at right angles to the straight edge at the division points. This determines the position and angle of the batten pockets. With a divider, or two rulers, project the spot at which the tack eyelet will be placed. This will be accomplished by extending the measurements of the foot and luff from the ends of the leach line until the lengths intersect. This is the point at which the tack eyelet will be placed later. The operation is the same for both the jib and mainsail. Having transferred your measurements to the material and drawn a fine. light line between the three points located for BATTENS each sail, it is time to consider the flow, or flatness, of your sails. In the measurements given i.n the .illustrations the aim has been at a happy PROPEf? LAYOUT .OF medium, and even slight alterations may put SA}LS ON MATEF?lAL WITH EDGES a CORNERS your product in the “extreme” class. LABELED. DOTTED LINES At two points along the luff , the dividing BETWEEN CORNERS TO BE MEASuf?ED ACCORDING points between three equal sections, mark a TIO YC)UR YAC.tlT`S pencil spot y8″ 6″stde the straight line at the R I G a ‘ N C, . Cur EXACTL.Y 0N LINE ALONG point nearest the head and another spot 1/8″ Tst:SOL,a:G;:EtE3’LFE’M°MUETmo”tstde the straight line at the point nearest the clew. These two spots and the tack and head eyelet locations give you four points through The jib is a somewhat flatter sail generally which a concave-convex curve should be scribed and consequently a concave curve should be cut with a flexible spline and thus provide for a flat into the luff. Mark a spot I/8″ €7tside the straight upper sail surface and a modest flow in the line midway between the head and the tack and 11 IIi scribe a fair curve between the points. As this edge will be taped, the cut, when it is made, should be I/8″ outside the scribed line. Parabolic curves are proper for the roaches in the leach and foot with the maximums about one-third the distances from the clew. A 1″ roach in the leach and 3/4″ roach in the foot will be about right. As the leach and foot are hemmed, the cuts should be made y4″ outside the scribed lines to provide for the folds. TllE. LEADING EDGE OF TL`E SA`L `S THE Luff. ON THE MAIN- i:jL¥ff\8sfi§i?§’ix:TEr uPP!f? f`OQTION. 6/ FIO\^/ AT THE BOTTOM. THE yAf2lATION BEING yd E*TREME FROM A STPAIGHT LUFF c”u;%Ft£;ETrfaFFJ#s^ STBAIGHT LINE TO ASsuflE FIJTNESS. STOPM SAILS Af!E CUT SOMEWHAT #A£E:Qo(NC?ti::¥ BEING INCQEA5ED %s#Tr.)t0%ussA” The batten pockets consist of sections of flat linen tape ]fa” wide, with one end folded back under itself for a distance Of . 7±” and then cut 4%” long for the mainsail and 2y4″ long for the jib. These should now be basted`and machine stitched in place along the inscribed lines on the leaches, the after ends being cut off so that they will fall under the leach hems, but not so as to cause a lump because Of excess material being folded in. An opening should be left in the upper after end Of the pocket through which the celluloid batten can be inserted. This is done by starting the stitching about the middle of the pocket and working toward the leach, but not reaching it, and then looping back and on around the edge as illustrated. The openings can be closed with hand stitches if desired. See D. The reinforcing units should likewise be basted and stitched into place at this time so that the luff, foot and leach edges will be bound under the hem or tape. See C, F and G. The leach and foot of the jib and the leach of the mainsail should now be hemmed. If your sewing ma~chine has a narrow hemmer attachment, you’11 find it most convenient; otherwise fold the edge in on itself twice over and baste and stitch. If inexperienced in this operation a little practice on a piece of scrap material may be advisable, as an equal tension must be main- g._osulT-2o%i[s§rm f!lvET ‘/16. METAL EyELET6 INTO ALL SAl| COINERS AVERAGE CON\BINATloN 0F SAIL MEASuPEMENTS HOW 10 I)ETEtzMINE SAIL APEAS MAINSAIL l9.5X60 a jie> io.25×39.6= i-a – 1170.0 4ck+,9_ ‘574.9 787.58 All edges must be cut carefully and smootHy to eliminate irregularities in the finished sails. This can best be done with a razor blade while the material is tacked down, or with well sharpened scissors. The whter has found it better to remove most of the tacks and use shears as one does not inadverently gather up the material under the knife, thus causing a jagged edge. From the scrap material now on hand, shape the reinforcing units which are to be apphied in the tack and clew corners Of the sails. The curved, or irmer, edges should be hemmed under to prevent raveling. All hemming, reinforcements and batten pockets should be applied to the same side of both sails for the sake Of appearance. 12 -I.i basting needle, while the left hand feeds the sail material into the tape crease without stretching, will make the basting quite easy. If you permit the material to creep up from the extreme depth Of the crease your sail edges will be irregular and unexpected pockets will appear in the sail surfaces, and if you stretch the sail material while basting it will be puckered when machine stitched. The tape chguld be cut off flush with the luff edge of the material, 8, and not folded under at this point, as the luff binding covers the rough end. Repeat the binding operation along the luff, but fold the tape under itself where it reaches the peak as in A. On the jib, only the tape binding on the luff must be apph,ed, as the reinforcing tape was put on before hemming. However, the luff binding on the jib extends beyond the peak, or meeting point with the hemmed leach to provide .space for the head eyelet. See E. Lay a cord, t-o be used as a forestay, inside the creased tape with the ends extending well beyond the luff ends; this will be attached to the jib club and througb a bowser to the mast cleat. Reeving the forestay through the bound edge` after sewing will be found most difficult. The head board (A) should now be crosstained around the curves to avoid pulling them stitched to the peck of the mainsail, and the into unsightly shapes. Fold under the peak of the metal eyelets riveted into the comets of the mainsail until the edge measures 3/4″ and will sails, being careful not to tear the material. this join with the head board, cutting away surplus can be accomplished by pressing it aside with an material to eliminate bunching. See A. ice pick or other sharp pointed instrument a bit The next step is to baste and stitch the y2″ larger than the rivet itself . flat linen tape reinforcing on a straight line beSet your sewing in.achine at No. 5 and fix the tween the tack and clew Of the jib-the clew tension so that it will not “pull,” and stitch along end being folded back and under itself about 3/4″ the outer edge of the tapes first, following up to avoid raveling, the tack end being cut off with the inner edge to smooth out the surfaces. flush with the luff, as it will be bound under the Because silk thread will unknot itself when flaptape. Refer to G. ping in the wind, it is wise to I;ut a drop Of Binding on the tape is quite simple if it is first conodiofi on the thread ends before trimming moistened, creased exactly down the center and them off. ironed in this shape, being careful not to scorch The dress hooks should now be sewed to the it. The extra cautious Sometimes boil the tape in mainsail luff at 6″ intervals so that they come water for 5 minutes to induce ‘complete shrink- midway between the screw eyes supporting the age a_nd thus avoid any danger Of later pucker- jack line on the mast. These hoo`ks should ing. alternately loop over the sail edge, first from one If the method explained here is closely fol- side and then the other, as illustrated in H. ‘ A one-piece spinnaker may be cut and sewed lowed there should be little difficulty in doing a workmanlike job of the binding. Fold back, and in the same manner as outlined above, the edge under itself, about %” of the tape and baste it to between the peak and the cle.w being along the the clew corner along the foot of the mainsail, selvedge and bound with tape, and the other being sure the sail material lies into the full edges hemmed. Reinforcing material should be depth Of the creased tape. Take this end in your sewed at the tack corner and the tape should right hand and thumbtack the other end of the extend above the peak to provide space for the creased tape to the edge of your bench top, head eyelet. somewhat beyond the tack Of the sail, and Storm sails, which are often important adtoward your left hand. A slight pull on the juncts, are smaller reproductions of the first suit, tape with your. right hand, which also holds the the second suit being 10 per cent less in area than 13 mom center of effort will lay ahead and lower than the c.e. of the larger suit to avoid readjustments of the balance when sail changes are made. Good sails must be given proper carendon’t “break them in” in heavy winds; give them a chance to fit themselves gradually to your riggins.. Loosen the tension at all cleating points when the boat is not in use or if the material becomes wet. Don’t expect sails to reach their maximum efficiency until they have had their third outing. Don’t wash or iron them because they have become soiled; if water stained they should be dipped entirely in water and allowed to dry without wringing. As soon as possible after use they should be hung up to dry and then rolled from the foot along the leach and wrapped in paper for storage or, better still, left hanging. the first, and the third 20 per cent less than the first. They should be so designed that theirYcom- These suggestions, if followed, will pay worthwhile dividends. The right material, accurate cutting, good sewing and proper handling mean satisfaction in the long run. As the only means of yacht propulsion, your sails are important to your pleasure. Treat them accordingly! 4ft. – •Lfi st:3:?:ryigH:o3gErobLHEdE3g :F!#!.iEg6n:g: i a:gsE!a: ;pf=:# 1EEx i o£:5:rif t£; ;g:#±3:[£{±£gt:gp€£:±±p:a::I::%[33:€Ld::a£:£gyTa:ev::g:a:BW±:L:g:p:I::g:: for lnteredted patients aB part of the thrill to watch your. little Bhlp win a ::::¥|::o:::iaFe:?ram;I,:|t:i::#: ;£:::g¥;i:g;:I:ff;;::i:£§d¥5!:£3:iea¥:##!#:rfg3i5E:#;rF::t£5::1:9:5:7 deEilgn. PatientB have built to the 56″ and M ClaE}8oB also. Model Yachting Monthly Newsletter b® k4:gka¥LPEe£: #v:t::¥eso:ETn: a¥BhE:o3¥:d:f g::##nB:o`¥# w:I:6 8ome camera work as a Bide line. of na3or yachts, Arthur` hag a largo library of 8xl0 I::1:: Plo,tea and o®rtalnly does a fine Job art every detail of boa.t and :PeLE#S a:€ e::: 3::g ;::t:¥:£ ::ge£::arin±3:t:=w:¥Ln::e°¥::mt:1::et:d#£:. :£rg:ua:a:e:::a:ea::u:EL::ms:I:g:::?:¥. Y:??Tt¥: 88£;: :y :¥e€h:fE:3::e°fM!8: ::: ¥::£: a:P33#d:? :gt:: ±£: ::=±°:6n¥: ;:¥BA:::::::e:o¥i¥ ;gh€¥n:a?hug: ;iA;i:i;i:;i;;rg?;!o:}ii:;eiii;ii:*:;;k¥L:i;gff;is!;::iim£:!!;ill:!iii:ai; tut.e into a business of his owri again the,nk him for the rna,ny prin¥: :¥he£:::::in:h%: LLfet= sb::k::dL¥::®a* Av., -‘ew ttoohel #.4,aE:wLRndo:X:#eL:ri.rii;.i;g:H::T£::£L:gGiLg.%iiL9::=:;:dnefE::w4:hva%u==n new addfeBB 18? JOHN PFTTERSON, Sam Franoisoo I,FTC has gubBcl.1bed to lffYM but we have boon unable to agcer.tain hlE] add.re8s …….. MISS AlhIA EAUM- GARTEN, Blgter of the fanouB K.Baumgart©n reoeiveB our thanks for the use of §£! i£ :§!§ :i£# ::; ::? ;: :I::£::=3±:g§¥:i: :i: :::,I:1: iE#:::i::;::o # : oE: 15. Mid,-West Doings + + ” By RUTH LENNIE The INTER-CITY ]`Iiller Trophy race was held at Cleveland, 0 July.I,1945. Wind wag light ,and fluky. The O.D.waia Acthur Newbaoher. A full round was sailed, Ronald Meil deo.Stelnbreoher Bill post Ralph Ma,lek Elmer Mueller. Ruth Lenn±e FH 51 DM 29 the scores being: Einer Neuf er Tom Rolf e FH 29 John Tronjo FH 28 FH 26 Ruth rv6uter Jim IJermie -DW 25 Cleveland M¥O tteing the wirmer, and Ronnie Meil being high man`on the Cleveland team took the cup home. Ther’e were 4 entries from Detroit,so Cleveland matched up with a team of four.. The other entries sailled along with the rest but only the soot.es of th.oae on the teams were counted towards winning the tl.ophy. The winning city has its name inBoribed on the Cup, and the highe`gt goor’er of the wirming team has custody of it until the following year. Other. prizes were handsome aluminum trays given by the FH I,fro, one for the top rna,n 8€e±E3rg:hag:n8a!::mfhaa€dm:£: t:ntBsi::°3: =:er:: :%fa±3::=g ±£%m:og:893:g: 3::S:3nsh::e:X:n:a=SG:::g€e±=b:::a:I?:y±88tt3e:I:e3±:i:rh:¥aadA:a:igg::; Just dropped her lea,d keel and laid down. Yea,h, you read it right— aha did drop her keel, and without help from rocks. George was much embarassed and 8aid he would probably never live lt down, ag he 18 a-oaDeful builder, but th08:o:3:ng:n::rh%£::ntor::w:go¥r¥pfie:3::£:i.:1;a:Etfo:#v:£n:¥h®£O€8:tt::6e and fr.om the wa.y he piled up points from then on, we would gay. that the keel ::3u:gmgaf:ng;o3!::Bofi g£:n;Iky’#:|g?in 3£:r3:;swi::mo#e?:::nge:I:h 5::I:g E::=o:a ±i%:e::I:i:¥r°£;ar€¥°:nF: :::X:dg:5dt:hgfn:t s#: , b¥o:Fe a:e:::;#t the Cleveland folks went meatlesg-and butterleBg the rest of` the month after pooling all their red points to feed us. Once again let me say there’s no !E3edl!£9tc5::e:g*e :::t E::P!t3:::yw::tt;:uhi!:::i.ordep’ and youse The guys SHUTE TROPHY, A Class, open event, brought a str.ong wind E!teady from ±±: ]gr;? #. po:g:g ; °3::gw¥:I:in::°6og::£:?e8hs:in€:?t::i:EVE:al:r8:a€¥kg : 8 points. For share, for shame: Only thr’ee entr.ies for this beautiful tr’o- Ehndy-;inw¥:%::k::::?ST£::Ln#st:iefi§::a3i::yh:::::±5:?§o±:a;e”=::e::e:a:. BOBtonla, which Hal;ry Miller bought from John Black and ln that wind theregt of us might Just aB well have left our. yacht,a on the bank, beoaus© the way the big BOBtonia was going tha,t da,y the other two yachts wer.e Just a Pair of a,leo-rang. Bostonia. weighs 58 pounds and took those waves like a ba,ttleshl|), while Jim Lemio’B 46 pound 0-at-ka with Bt,or.in sa,ilo bobbed like a cork. In the last bea,t Bostonia, running with splrmaker., snapped a st-eel rna,Bt aboint a ±°%ga:=±dis°: Lo:3BiB: :few;::h: t:a::P±°£;a£Ee3#;tw: #ou:hg±n:a:h:tp!:¥: i :E°tL:¥t 1:f:=e e€%m:::ngh:yfa®:€ %:Sp::¥ ±8fe]hag:8: ‘ :ego:::i:X :3#£gw?°°:# ±S :a:i;tL!°L8°n%:#;.±Eo3#nn:::er:::.6_Metros wag Called off on account of I.aln and vel.y Cold weather.. The A-OI-ASS CITY OIIAIi,fi?IONSZIIP was held July 22 in a light,va.riable wind. •1me liennle, O-at-ka, 16 polntg; Oeo. Btelnbreohel., BOBtonla, 7 points. Mr. a. Soha,itber.ger, I,/Iarvey, 5 points. Wind and weather Conditions were decided- :Xr:1:ft%n§i;±¥:::o::?r::;v:£:LtE:a±g::yf£:83::±=kaweSh::h±km:#tBB:e:a¥: show every dog hag his day. #:::;i:::I:4§::m£;R¥::::::I::ri::i:§o;:o:::E8;:g;;i:n:::-i:,:I:;¥;;?:;:;ni8,i:i i_-.i iiE .WANTED ! PHOTOS of interest to Model Yachtsmen Send me your negatives of models in action, club-hou8e8, views of ponds, skippers. gadgets. ctc. I will return them with an 8110 ENLARGEMENT, GRATIS Photos to bc used for Model Yacht Publicity purposes CHARLES HEISLER 38 Willett St.. Albany 6. N. .Y. BDATINE HELPS iN BOOK FORM The experience of experts can be ‘va]uable to new sailors and old-liners alike. All books on ‘boating `are available from YACLITING.a Book Department. May we suggest: Elements of Yacht Design, by Norman L. Skene. Yacht Designing and planning, by H. I. Chapelle. Amerit:an ship Models, by v. R. Grimwood. $4.00 $4.75 $6.00 YACHTING PUBLISHING CORPORATION 205 East 42d Street New York 17. N. Y. JAMES BLISS &co.’Inc. 220 State street Boston, Mass. Tcl.Laf.414l – SUPPLIES FOR THE THE OLD FAITHFUL TO MODEL YACHTSMEN MODEL YACHTSMAN MODEL CRAFTSMAN FITT’]NGS PAINT PLANS Has promoted interest in model yachting since 1933 The FINEST MODEL YACHT SAILS, FI-TTINGS, SPARS, – ACCESSORIES AND M.d. to Ord.I Designs by H. E. Richardson, including “Yankee 11”, “Blue Chip” and “Redskin” W. a. BITHELL 159 Falcon St., E. Boston, Mass. only iungaein& lo give uou Oomplebe oo.)eroge of news and The beat in Conatowctton] Ari€oles News-Btand 25c. SubBoription.2.50 Wrote I or hick o| Full Size Plan. MODEL CRAFTSMAN Ramsey. N. J. 1.-‘““““-_ _-“-•\ —- iiiE – -i- i –_ \ \. \ _s_-`_ I !1 I: iiRE/ `—-` i ‘1i -_i ++ -“` –=` `- II i I +` /T IIIIIIIIIIm / / Z/ +++ / t`{`*, `+t<-^` 1 p +i;.--:1::=.i::--:i- : 1 ¥ ,ap =¥,-,--T:-s:-:-.,-,r. i `\ I? ` 3F--i€-`cr -`.=`-`rJ-` - _ _ ``p - f i - I: ::JiE--=-:-5: `\ 3f:::-.::`::,'=r:--1: +`t. -r- I;-;;;i±:f~i-i:a?=:==-1:-`-;:`vi`,:,i-+ '` Bi= \`::--,-- -{'+-.I.J5-:---:--, •* L€i. #=g:¥ffi+``£anf¥;¥;I;::,:Lfa§±r=¥is~±`€iiTr:givfe¥:f_:€-I-:``.'-:+-`-i+'`r= •,. =_,.-\~- `\ -+-\ ) 1 -: ~`---=` --¢ *c.+...:-i--:-,.i -I--::---::j`:::.-+:-i: \ + -_J