- Strictly Sail. By Rod Carr
- This text provides a comprehensive update on radio-controlled (R/C) model yachting projects, focusing primarily on the evolution of Chet Purdy’s design series from the “Sprite” to the “Yankee” 50/800 class vessel. Carr outlines the specific construction dimensions, weight specifications, and component recommendations needed to build a light-air-optimized 13-to-14-pound vessel, while announcing the availability of fiberglass hulls from Leisure Products. Additionally, the text highlights organizational milestones within the community, including the granting of sanctioned club status to the Marblehead and Central Park Model Yacht Clubs, efforts to resurrect the Star 45 Class with a new provisional set of rules, and logistical announcements for upcoming Society of Antique Modelers (SAM) championships.

=——S—_—_— SeeSS SSS 2S Priakort eee ee ee : in} eas ere \ Ue sy oie Tinie Se 6 a eee. uaeDS Me to Regie OO Ge in ‘. er a. ) e ef) & fais Ser Se Ae . ee er _ (s “+ Nv »? This “Sprite” was the second development in the evolution which culminated in the “Yankee.” STRICTIV SAUL By ROD CARR @ With the intervening ride across the gineering Little Hercules winch, and the bumpy North Atlantic | find that | have necessary deck structure, rudder mount and keel mount. | would suggest that slipped behind on the 50/800 YANKEE project. Hulls and keels are now available from Leisure Products, 6920 Braddock Road, Annandale, Virginia 22003. The cost is $50.00. | have the hull/keel combination on my work bench and will have the first chapter ready for you next month. We will be installing Futaba R/C gear {the two channel rig), a Harris En- you start work on the mast and spars you will need. The mast needs to be about 63 inches tall, either the two piece kind for a bolt-rope main luff, or a single piece for jack-line and dress hook attachment. Main boom should be 17 inches, and a jib club of 16 inches is needed. Make the spars as tight as pos- sible, consistent with good strength. Since we are in an off-season period, now would be a good time ot order the sails you will need from your sailmaker. The main has a 58 inch luff and a 16 inch foot. The jib has a 45.25 inch luff, 15.5 inch foot and a 42.5 inch leach. Our aim through the whole YANKEE project is to build a 13-14 pound M-class vessel which will be a light air dream, yethas a hull form which will allow it to take 20 knot gusts without lying down on the job. Having sailed the prototype at the 50/800 ACCR to a tie for 6th place, | can attest to its ability to do both. The fiberglass hull/keel weighs in at about 3 pounds; add 7 pounds of lead ballast and you are left with 34 pounds for deck, sail rig, R/C gear and =a ot i J.G. Products new radial jib fitting. Other items are planned. 32 The “Sprites light weight produced a boat which had unbelievable acceleration. MODEL BUILDER winch plus batteries. It can and will be done; and using unmodified, stock, easily available components, The YANKEE is the third generation of a design series by Chet Purdy of Germantown, Maryland. The second genera- tion SPRITE showed astonishing bursts of speed during the 1973 season. As you can see in the photos, she had a bow of U-shaped sections, much like the BOOMERANG. This bow had a tendency to bury on down wind runs and was modified in the YANKEE to the plumb bowed, flared deckline configuration. The extension of the foot of the bow forward has made the bow quite a benefit when beating to windward while heeled wel! over. It seems to push the boat up to weather and make her pointing ability a joy to behold. Each generation of the YANKEE series has done well. The progenitor sailed in the 1971 Mid-Atlantic Sailing Regatta held in Bristol, Pa. She won the event handily. The SPRITE version won the first 50/800 series our club sponsored in 1973. And as mentioned, the YANKEE did well in the 50/800 ACCR this year, except for the handicap of the skipper who was sailing it, yours truly. With the 1975 50/800 ACCR set for Washington, D.C., in August of that year, | imagine we’ll see plenty of excitement on the pond. I’m happy to report that AMYA has been lucky enough to grant Sanctioned Club Status to the MARBLEHEAD MODEL YACHT CLUB. This club was formed in 1925 and was the club which gave birth to the 50/800, or Marblehead Class, which has become so popular. The club has 1974 National Champion New bow lines were faired into the ‘’Sprite’’s after sections, and the “Yankee” was born! Sprite had a tendency to “stub its toe’’ on downwind runs. clubs are also members of MYRAA, which is the organization which sails boats by vane gear. Apparently AMYA proved its ability in the organization and promotion of R/C sailing to these long established clubs. I’m sure that we will all gain by making the acquaintance of these skippers. A distinct possibility exists of a club forming in the Seattle area. We recently had a visit with Ralph Gibbons of 19849 Marine View Drive, S.W., Seattle, Wa. 98166 who was staying with relatives in our area, He said that a number of AMYA members and other skippers were beginning to assemble. With such sites as Green Lake in that city, it seems natural that miniature sails will soon be seen racing round the buoys. MODEL BUILDER’s intrepid editor has offered to provide a 15 percent disContinued on page 60 Standley Goodwin (designer of the WARRIOR) as head man. He can be reached at 33 Norman Street, Marblehead, Mass. 01945. The club has already scheduled an October 5, 1975 regatta for the Campbell Cup. That is one | don’t intend to miss. Almost simultaneously, sanction was granted to the CENTRAL PARK MODEL YACHT CLUB with Larry Goodrich of 295 Henry Street, Brooklyn, N.Y. 11201, as Commodore. All you An 1/2 or 5/8 ply AFT S.C.U. MOUNT skippers who have been wanting to go to the Big Apple can take your boat along now, and have a little sailing too. Both CENTRAL PARK and MARBLEHEAD 5/8 or 3/4 ply FORWARD S.C.U. MOUNT Thesa patterns go with next month’s article an building the “Yankee, however, there ara so many illustrations with the next article that we are putting these in while we have the space. If you’re gonna build one, you can trace these off, cut out the parts, and be that much ahead| FEBRUARY 1975 33 THE LIBERATORS Ake HERE! ae S aaccoas G0 60G63-° MUSEUM SCALE …WING SPAN S90 INCHES, FOR FOUR .15 TO .25 ENGINES SEND STAMP FOR RETRACTS… FOWLER FLAPS…BOMB BAYS… RETRACTABLE BALL TURRET MOLDED CANOPIES… TURRETS…COWLS… TURBOCHARGERS… MACHINE GUNS DETAILED BROCHURE AND NEW CATALOG. BALSA CONSTRUCTION… FOAM WING … FUSELAGE ASSEMBLY JIG JACK STAFFORD MODELS ® 12111 BEATRICE ST. e CULVER CITY, CA. 90230 in half would have cured this, assured better (and more comfortable) judging, and would still allow equal exposure. We’d strongly recommend this change for next year. One redeeming feature though; when you’re judging some of the world’s best fliers, your interest and concentration overcomes the aches and pains. Away from the flight line, the International Tournament had many other attractions. Entertaining, or being entertained by modelers from other countries is always a heck of an experience. Language barriers create interesting problems that both sides have fun solving. Of course, we of the U.S. have an advantage in that most ‘foreign’ countries teach English in their schools and colleges. …But then it changed…A whole affair, had the least English train- ing, yet made out quite well. On their first day in Las Vegas they were in one of the Circus Circus shops, attempting to make a purchase and having no luck Dave Brown came within 335 points as a result of his outstanding last round Circus Casino, happened into the shop. You guessed it, she was from Sweden, and from that moment on, whenever she wasn’t cruising around the Casino ona trapeze, twenty or thirty feet above the slot machines, or the roulette, crap, and Black Jack tables, Lillemon Moller escorted Benny and friend, as chief interpreter … and eyefull! reputation! cluded astronaut Gordon Cooper and Indianapolis 500 race drive Roger Ward, in addition to the co-sponsors and top officials. Each of the contestants was Sailing……. Continued from page 33 tive plaque. The original plans called for the $1000 highest single score award to be based on qualifying flights. However, as this had been revised, Hanno was awarded the prize on the basis of his excellent first flight score of 10,200. Fortunately for all, no one exceeded this NEW MEMBERSHIP AND RENEWAL FORM Name Please PRINT AMA No. Address State Competition Classification: new L_] AT effort. In concluding his speech at the banquet, co-sponsor Bill Bennett announced that the tremendous success of this first International Tournament assured its continuance on an annual basis, and that commitments had already been made that would up next year’s cash awards to $20,000! Las Vegas is truly living up to its The Saturday night banquet was a tremendous affair. The head table in- NATIONAL SOCIETY OF RADIO CONTROL AEROBATICS City score on the final day of flying, though circus troup that entertains continuously on the mezzanine of the huge Circus called up and presented a commemora- Benny Kjellgren, from Stockholm, Sweden, along with his helper, whose name no one figured out during the B Cc RENewat L_] Zip C/DN CO C/DE C NSRCA No. Ques are $4.00 for one year. Send check or Money Order to: NSRCA, c/o Sally Brown, 8534 Huddleston Drive, Cincinnati, Ohio 45236 60 pretty young gal, one of the aerialists with the e count to AMYA members who provide him with their AMYA number when sending in subscriptions. Now is the time for that two-year subscription which will keep this fine magazine coming to your door. Bill Northrop is the only editor who has supported R/C yachting, and actively solicited the materials necessary to give that part of the modeling hobby its fair exposure. My hat is off to him, and | urge you to support his publication to the fullest extent in recognition of this generous contribution to our welfare. Ps * * | am continually asked where to buy the fittings that are used on the boats. The major source is A.}. Fisher, 1002 Etowah, Royal Oak, Michigan 48067. Write to Bob Irwin and ask for his catalog. A new source | have just learned about, is west coast skipper Jim Gale. Jim has tong been known for his line of speedboat propeltors, but is now adding sailboat fittings to his offering. First out of the chute is his radial jib fitting, which is 2.5 inches long, and offers a 7/8 inch fore and aft adjustment in its mounting channel. it is investment cast of silicone-bronze, brass and aluminum. WHEN CONTACTING ADVERTISERS, TELL ‘EM MODEL BUILDER SENT YOU! MODEL BUILDER 4 | have not actually held one of these little gems, but am hoping to in the near future. Write to Jim at: J.G. Products, 8030 Fordham Road, Los Angeles, Ca. 90045. By the way, the little fitting shown in the photo will go for $6.75 plus $.50 postage. * * * t recently got word on the availability of the “IT’S FUN TO SAIL, BUT IT’S MORE FUN TO WIN” Book. You may obtain acopy for $4.00 from the author, Ray Davidson, 320 Rumsey Road, Toronto M4G 1RS5, Ontario, Canada. This one is worth its weight in gold. Don’t pass it up. * * * Having passed my duties as an AMYA Director on to Buddy Black of Tampa, Florida, | was given the chance to take a poke at a sore spot in organized sailing’s side. This was the STAR 45 Class. The STAR 45 Class has met the minimum 20 boat registration for two years, and polling of the membership had failed to locate a skipper who would serve as class secretary. Since most people join AMYA for racing, it was felt that either the STARS should be goaded into racing, or else AMYA should publish a disclaimer so that skippers would not join thinking they were only a hop-skip-and-a-jump away from a STAR 45 Regatta. MOPe et Ene” ne =—=s- 20 _ EAST ORTEGA ST. SANTA BARBARA, CA 93101 | sent out a form letter to the mem- bers of the class, and to this date have heard from over 25 percent of them. As of this writing, the Savannah MYC has scheduled the EASTERN REGIONAL CHAMPIONSHIP for STAR 45 Class to be held in March 1975. I’m only a couple of boats away from delcaring an ACCR to be held in Washington, D.C., in late August. The class is small, yet more of those boats have crossed hobby shop counters (A Dumas kit, selling for about $70.00. wen) than any other boat out today, unless | miss my guess. This is probably due to a general lack of push from a class secretary, and may be due to people who have sailed the boat against others and found it to be slower. Yet, as a one-design boat, the STAR can be as much fun, when raced against its brothers, as the hottest 50/800. The main problem to organization has been the lack of a set ofclass rules. Since a goodly number of boats have been built using templates, rather than the kits themselves, there is a natural latitude in measurement from one boat to another. After 5 years of competitive sailing, | have the distinct feeling that a quarter of an inch of some hull measurement is not #/100th as important to winning as is good sail trim, or a light hand on the rudder. So my approach to a provisional set of class rules was to keep everything on the big side in order that all boats would fit in. After sailing FEBRUARY 1975 in 1975, the class members can provide input and we’ll fill any loopholes which have been left. Here is the proposal. If you have a STAR 45 gathering dust, take it down. You just might find out your next door neighbor has one too!!! Maximum LOA — 45.50 inches Maximum Beam — 11.5+ 0.5 inches Centerline of deck to Bottom of Keel — 17.25 inches Maximum Jib — (All sail dimensions to be cloth to cloth, with sails attached to spars.) Luff — 41.25 inches, Foot — 14.75 inches, Leech — 36 inches. Foot round — 1 inch max. Leech Roach — 1 inch max. No battens, tablings to be of same material as sail, Main — Luff — 61.75 inches (Incl. headboard). Foot — 24.25 inches, foot round 1 inch max. Leech — 64.50 inches, (Incl. Headboard). Max. roach — 2.5 inches. Main Headboard — Maximum 1 inch fore and aft, Maximum 1.25 inches vertical extent. Main battens — Maximum of 4, maximum length 8.5 inches. What we are really saying is… “If it looks like a Star 45, it probably is a Star 45,” I’m the class secretary, so if you have have one of these, let me know. | can use all the help | can get. The class secretary is supposed to do what the a; >> See your hobly, retailer (> skippers in the class want, so here’s your chance, give me the word. « Plug Sparks … Continued from page 50 has been running second for so long, the C.D. has been marking him that way out of sheer habit. Jim Adams narrowly failed to win. Would have made it three in a row! Marc Tachett put up the most spectacular flight when he took out the radio and flew the model nearly out of sight directly overhead. Biggest fun model of all was Phil McCary’s Piper Cub Cruiser, converted to free flight, that flew well enough to win the O/T Scale event. Looked like the real thing in flight characteristics! Nick Sanford was a close second with his old reliable Modetcraft Corben Ace. BEST NEWS YET!! As previously announced, the dates of the SAM Championships were not yet firm…only tentative. Now hear this!! The dates (by popular demand) of the SAM Championships will be July 29, 30, and 31. If you want to take in the Nationals the following week at Lake Charles, here is your chance. The SAM Champs will be hosted by the Model Museum Club at Denver. Monday, July 28 will feature the bean feed, to be held in conjunction with the MECA Grand National Collectogether. the collectogether will run all day and evening. WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! 61 Oid you know R/C Sailing can be highly competitive,or just R/C events have not been formalized. We’ll carry these in the next issue, if possible. Anyway, the wrap-up is the Didyou know Your present R/C equipment can be used That’ll be fun! plain fun? O/T Awards Banquet, Thursday night. FINAL WORDS: without change? Just had luncheon with Howard Carmen and his delightful wife, on tour from New Jersey. Howard has been responsible for starting a new SAM chapter called SPOTS (The Society for the FOR THE AMYA 50/800 CLASS FOR THE AMYA 36/600 CLASS INTRODUCING ! TAHOE 600 Length (shown) 36/in Beam Length 3s 9 kin Sail area Beam Height 600sq in ® MOLDED PLASTIC CONSTRUCTION Sailarea ® FINISHED NYLON SAILS Displ. = COMPLETE KIT (LESS BALLAST) Preservation of Old Timers). How about . 50 in gin 74 >in 800sq in 14% Ibs (lessR/C) 2 MOLDED PLASTIC CONSTRUCTION $35 ve pa. eFINISHED DACRON SAILS # COMPLETE KIT (LESS BALLAST) £7, VICTOR SAIL SYSTEM a5 that? The newsletter, “Spot Shots,” is a goodie that will go far towards buiiding a solid club. With the gals as the cheering section, this club shows they are no slouches at winning either, taking five trophies out of a possible 12 at the Pittsfield Meet. The SAM Champs at Denver better watch out for these high flying birds! r] FOR MODELS WITH UP TO 00 1q in SAIL AREA = $2.4 95 COLORED NYLON SAIL SETS AND LEAD SHOT BALLAST AVAILABLE VICTOR MK I SAIL SYSTEM FOR VALKYRIE SIZE MODELS Al your dealer or direct ftom: VICTOR MODEL PRODUCTS PEAPOD You’ll pass by the stall the dihedral braces at this time… or parts C. Dealers welcome (AVAILABLE APPROX MAY 15) fleet when your 11715 Adenmoor Ave Colf coudents Downey, Ca. 90242 =~ yd POWER boat Is powered by CARR SAILS. With more competition wins in more A.M.Y,A. classes than any other sailmaker, we know what an important part of success salls are!!!! Act now and this MODEL BUILDER Special will allow you to suit up your PEAPOD for only $20.00, a saving of 1/3 from regular prices. Write for our off-season savings In other classes and for a copy of the 1974 brochure and Price listing!!! Specify color: white, gold, red, dark blue, light blue or green. Spectfy main luff required: bolt-rope, dress hooks, double luff. Give AMYA boat number and choose-numeral color: ARE Make check or money order payable to: Tri-Motor …. Continued from page 35 biack, white, red. CARR SAILS LANDING GEAR All wire parts are bent and assembled over the plan. Where wire parts Nos. 1 and 3 meet, or cross, they should be bound with fine copper wire and lightly soldered. Parts 1 and 3 are now positioned on the front side of the front wing spar and sandwiched in place with the front dihedral brace. Wire parts No. 4 are mounted on the front side of the rear spar in the same manner. It will be necessary to slightly crack the rear brace in order to fit against the spar. These joints should be held in place with clothespins while drying. FUSELAGE Lay out two basic sides as indicated by the shaded outline on the side view. Begin assembly of the sides over the top view by installing Formers 3 and 4B 7607 GRESHAM ST., SPRINGFIELD, VA. 22151 along with cross braces on top. Bring the On Tuesday, flying starts in earnest, and will feature the following events: Class A Pylon, Class C Cabin, Old Time line Rubber and O/T Scale. This will be fol- The final day, Thursday, will be an “easy”’ day, with only three F/F events; Class C Pylon, Class B Cabin and Unlimited Antique. As of this writing the lowed by a tour of Coors Brewing. Burp! Wednesday events will be Class A Cabin, Class B Pylon, 020 Replica, Tow- Glider and 30 sec. Antique. The Annual SAM Business Meeting will be held that evening. 12, joining them with a 1/16 x 1/8 balsa tailpost and diagonal brace inside, Add 1/16 balsa filler under the stab mount, cut with the grain running vertically. The nose is brought together at Former DATE REC’D. SOCIETY OF ANTIQUE MODELERS MEMBERSHIP APPLICATION NO | hereby make application for individual membership in the Society of Antique Modelers. NAME rear sides together at Former 9 and a bottom cross brace. Add parts 11 and ‘DO NOT WRITE IN THIS SPACE YEARS MODELING BIRTH DATE ADDRESS STATE CITY Please check if you belong to any of the following: A. M.A. NO. M.E.C.A, NO. S. A. M. CHAPTER NO. ZIP Note: Membership includes 15% discount on one year MODEL SUILDER Magazine subscription. Give S. A. M. No. when subscribing. Enclose Membership Dues of $3.00 and send to: Society of Antique Modelers 1947 Superior Avenue Whiting, Indiana 46394 In making this application for membership to the Society of Antique Modelers, | agree to abide by the rules set by the Society and realize that the goals of S. A. M. and the Old Timers movement ara to encourage participation above competition and is dedicated to the preservation and reproduction of vintage model aircraft. Signed 62 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! MODEL BUILDER




