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mooeN HW. B. Tucker on Bri Championship was open to foreign competitors, and both “Vivianne” (France) and. ‘‘Revanche” (Denmark) proved dangerous competitors to their British rivals. It was decided that in order to give competitors aS easy a time as possible, the first heats of the match should be sailed in divisions. The fleet was accordingly divided into two divisions, “A” and “B,” with 14 boats in each. The divisional sailing took three days, and after that the boats of “A” division sailed boats of “B” division, thus making a complete one-round tournament. 9.30 a.m. There was a very light, fluky wind from Monday, August 6.—His Worship, the Mayor of Gosport, started the first pair in “A” division at the North which taxed skippers’ skill to the utmost. Our old friend H. Boussy with his Vivianne, who surely deserved better fortune this year, in a board with second boat Serenade, one of the many Priest designs that did so well. Mark Fairbrother in background gets ready his whistle BRITISH A-CLASS OPEN CHAMPIONSHIP It was planned for the Gosport Regatta, 1956, to start on Sunday, August 5, but the number of entries fell to twenty-eight as against forty at Fleetwood in 1955, so the start was postponed until The lesser number of entries Monday, August 6. can be ascribed to the Southern venue, which made the journey too long for many of the Northern and Scottish entrants. In spite of the reduced number of entries, the general standard of both boats and sailing was higher than ever before, “rabbit” in the whole fleet. and there was not a As usual, the British Unfortunately, F. Helmsley, skipper of “Calliope,” had left his vane gear in the train, so this boat was treated as a bye for the time being, while her owner dashed back to Redhill for a spare. During the morning, the wind varied from N.E. to S.E. and sailing conditions were very poor. As a result. it was only possible to complete three heats with “A” division in the morning and five with “B” In “A” division, “Jill” during the afternoon. and “Calypso” scored 13 points each and “Marion” In “B” division, “Vivianne” and “Serenade” 12. both sailed extremely well and gained 21 points. Tuesday, August 7.—The wind was still very light and variable, veering from N.E. to S.E. “B” division had the forenoon session, and four heats were completed. A fifth heat was started but had to be abandoned after the run as a flat calm descended on the lake. It was nevertheless a very interesting morning’s sailing as it produced a keen duel between “Vivianne” (38 points) and “Serenade” (39), during which the French boat made some lovely courses. When “A” division was called to the line after Junch, there was more wind, though this was still variable, veering from S.W. to N.W. Under the prevailing difficult divisions, two local boats, “Moonraker II” and “Calypso,” pulled up fast. Wednesday, August 8.—‘‘A” division were favoured with a smart westerly breeze dead down the lake in the morning. It was a lovely day with brilliant sunshine. “Calypso” continued to forge ahead and finished the morning with 49 points, closely followed by “Moonraker” (46) and “Revanche” (41). During the afternoon, conditions were not quite so good for southward, “Serenade” score to 50. “B” division as the wind backed to the conditions. reaching giving almost continued to do well and raised her ‘“‘Vivianne” also sailed very well, though she was not favoured by luck and lost points thereby. Thursday, August 9.—At the close of Wednesday’s racing, it was possible to assess the position of the leading boats. There were: “Serenade” 50, “Calypso” 49, “Moonraker” 46, while ‘“Vivianne.” “Red Sabre,” “Juanita,” and “Serica” all had 42, and “Revanche” 41. In the forenoon there was a moderate E.S.E. Kai Ipsen of Denmark with his famous Revanche, which came fifth, ready for the signal in a duel with third boat Moonraker II sailed by Peter West, winning skipper last year 498 ish Open A-Class at Gosport breeze giving a beat and run. A very exciting board was sailed down wind between “Commando” and “Serenade” which ended in a dead heat. By lunch three heats had been sailed, and three local boats, “Calypso,” ‘Serenade’ and “Moonraker” occupied the first three positions, with ‘Vivianne” lying a good fourth. The wind hardened during the early part of the afternoon, and a spanking whole-sail breeze gave the best sailing conditions experienced during the Championship. The stronger breeze suited the rather under-canvassed “Serica,” which rapidly improved her position. During the afternoon, Amlot, tripped on the heavy fall, tearing off bruising his right side him taking any further mate carried on sailing our old friend, Mr. H. staging, and had a very a thumbnail and badly and leg. This prevented part in the race, but his “Betty XII.” A terrific battle developed during the afternoon between the leading boats, but “Calypso” maintained her lead. “Moonraker” wrested second place from “Serenade,” which dropped back level with ‘Serica” in third place. Towards the end of the afternoon, the wind lightened a little, and “Serica” dropped back to fifth place, a point behind ‘“Revanche.” At the close of the day’s racing, six heats were left to be decided next day. At this point scores Winner A. Jurd with Calypso, designed by Priest, which though entered by Poole, made it virtually a 1-2-3 occasion for host club Gosport! Behind, Marille from Ryde, which finished somewhat down the list at 24th. one heat had been completed there was a heavy downpour which killed the wind, and the O.O.D. adjourned the remaining heats until the afternoon. Four heats from the end, the wind changed suddenly from East to West in the middle of a board. When the penultimate heat started, it was again almost a flat calm with occasional light northerly airs. The positions then were: “Calypso,” and “Serenade” equal 91 (each with Resail), “Serica” 90, “Moonraker” 87, “Commando” 79, “Revanche” were: “Calypso” 81, “Monraker” 77, “Serenade” 75, “Revanche” 73, “Serica” 72, “Red Sabre” 68. Friday, August 10.—It was a thundery, oppressive morning with fickle light airs coming from all was intended to sail two of the remaining six heats during the forenoon, but when directions. It ENTRIES AND SCORE FOR BRITISH OPEN A-CLASS CHAMPIONSHIP | | Regd. Postn. No. Yacht Owner | 748 Calypso 722 Serenade … T46 Moonraker I! 750 | Serica 2 D22 | Revanche … .. . .. Me 6 704 .. | 7 7 8 712 9 664 726 720 F27 692 747 621 12 13 14 15 16 17 Red Sabre Commando | Jullanar Marion Tango Juanita | Vivianne … Coronation | Arabesque II Orchid Il 716 =| «Jill re 649 Scheherazade 263 | Calliope 715 | Trixie Il 707 | Roberta 19 20 | ; Club Designer Mon. | Tues. | Wed. | I 2 35 4 |. 5 21 SHEET 623 698 728 24 25 601 731 26 27 28 625 738 729 | Grenadier Black Tarquin, Tosca Pe Marille Aramis Evros | Raven mt Betty XII ste eye; Se – | A.Jurd… | R. Gardner | P. West … | N. D. Hatfield Kai Ipsen – H. Andrews | F. Shackleton | L. Corrooin J. Meir H. Boussy… W. Hugman J. Anderton Y. Crean … A. Levison W. Baker … F. Hemsley D. Pinsent A. Davis | D. Armitage | R. Bradley E. Dawson Priest Priest : After Turner Daniels Ipsen Newcastle | B. Priest | Ses Davisn::. Poole Gosport Gosport … Y.M.6-m.0.A. | Denmark … Andrews … Birkenhead . | Paignton | Norwich | Bolton : . Priest … Daniels | Turner Birkenhead | Nash F.. Ford .-.. J. Parkinson H. Amlot Portsmouth Fleetwood Birkenhead 499 Daniels Priest 10 eee Ale 4 42 | 29 39 | 18 } 20 | 7 a0 | b 102] ea 3 Lies — — Parkinson Priest 27 38 21 23 8 | 13 | 22 Ferab eins 2 oe as | 12 | 18 Mal caus ae2 — Norsworthy Alexander ee . | Priest gel 49 50 46 42 4l 33 12 | 28 y ies 7 J Daniels Boussy Alexander Littlejohn Turner Y.M.6-m.O.A. Portsmouth … Hove & Brighton Paignton … Bourneville Ryde Doncaster en Corby Tucker | Birmingham | France Fleetwood Y.M.6-m.0.A. Poole : W. Poole J. Lofthouse Asa] Civil … Bolton Bolton 13 33 21 39 | — | 20 inlet: Sey Balehf 6 25 es jae sete : | – | 5 Atle 1Or eel a 81 75 77 72 73 68 63 60 Fri. 101 96 94 92 86 83 8 80 38 36 60 47 77 77 42 «442. 30 25 28 58 él 51 49 37 77 74 66 63 él 30 19 25 32 33 47 38 42 47 40 60 59 59 56 55 21 44 54 Fa28 26 34 23 19 39 38 53 45 16 ope 8 22 25 13 29 38 33 43 42 4l 7 re he) y Brae wert ea | eB] 5 | | Thurs. | 4l 38 54 54 MODEL MAKER Her displacement is above the in use for 3/D maximum Rating formula, and would be sufficient for an L.W.L. of 54.65in., but spacing the sections out to this L.W.L. would in turn put the displacement up to 54.377lb., which would warrant a further increase of L.W.L. In fact, one could envisage spacing out the sections of the original “Moonraker I” to about 55.0in. L.W.L. with only a small loss of S.A. Now, Admiral Turner always contended (and in my opinion rightly contended) that the only alteration that can be made in a design, without sacrificing its essential characteristics, is ap alteration in the spacing of the On left: Last boat Betty XIJ makes a pretty picture with spinnaker well filled; only skipper Amlot’s injury prevented a better placing. Above: N. Hatfield’s always dangerous Serica (4th) matched against Tosca from Bolton 78. During the heat, positions changed somewhat, and before the last heat scores were: “Calypso” 94 (R), “Moonraker” 92, “Serenade” 91 (R), “Serica” 90 (R). For the last heat, a light northerly wind was blowing, giving a free and a close reach. By the luck of the draw (or was it skilful seeding?), the four leading boats met in this heat—Calypso” v. “Serica,” and “Serenade” v. “Moonraker”. This promised a most exciting finish, and spectators were all keyed up when the boats were started on their run down-wind. In this “Calypso” took two points from ‘Serica,’ and “Moonraker” two from “Serenade.” Thus at the start of the last weather boara the scores stood: “Calypso” 96 (R), “Moonrake” 94, “Serenade” 91 (R), “Serica” 90 (R). On the beat “Calypso” and “Serenade” secured the points, leaving the scores: “Calypso” 99 (R), “Serenade” 94 (R), “Serica” 90 (R). Thus first and fourth positions were determined, but second position was left in doubt until “Serenade” had taken her re-sail. Final scores were: Ist “Calypso”, 101; 2nd “Serenade.” 96; 3rd “Moonraker IIT,” 94; 4th “Serica,” 92. Full list of entries and Score Sheet is appended. * * od The 1956 Gosport Regatta must be regarded as a triumph for Mr. B. Priest. Six boats of his design were sailing: three from his “Commando” design and three from his “Roberta,” including both the “Calypso” original “Commando” and “Roberta.” is a new boat to ‘Commando’” lines, while “Serenade” is a new yacht to his previous design “Roberta.” The other two “Commandos” were Mr. Priest’s own boat, which finished 7th, and “Betty XII,” which finished last! The other two “Robertas” were “Roberta” herself, which finished 20th, and *“Commando’s” “Aramis,” which finished 25th. dimensions are: L.W.L. 54.0in., L.W.L. beam 14.lin., displacement 54.0lb., S.A. 1550; she just takes no Q.B.P. “Roberta” is: L.W.L. 54.0in., Q.B.P. 0.5in., L.W.L. beam 13.6in., displacement 51.0lb., S A. 1500. I always regarded “Moonraker I” as Admiral A. Turner’s masterpiece and the best heavyweight A-Class extant. Her dimensions are: L.W.L. 53.5in., max. beam 15.6in., displacement 62.6lb., S.A. 1638. sections. Hence, when I heard that Mr. P. West contemplated building a bigger edition of “Moonraker I”, I rather expected he had in mind alterations of the nature outlined above. I was, therefore, surprised to hear that the dimen- sions of the new “Moonraker II” are: LW L. 54.2in., displacement 63.51b., S.A. 1638, and further that the beam has been decreased by 0.25in. Further, the greatest beam point seems so much farther aft that it would almost appear that the whole increase in lengh is in the forward part of the boat. “Moon- raker II” is reputed to be decidedly faster than her predecessor, and sailed very well during the regatta. Nevertheiess, one is left wondering whether the new boat is as good as she would have been had the increased size been obtained by more orthodox methods. Another interesting new boat was Mr. N. Hatfield’s “Serica”, built from designs by Mr. J. W. Daniels. Her dimensions are: L.W.L. 55.8in., Q.B.P. 0.15in., L.W.L. beam 15.07in., displacement 55.8lb., S.A. 1472. She was designed to have over 1600 S.A. on an L.W.L. of 55.0in., but found to be considerably over rating, and in order to get her into rating the displacement had to be lightened and_ S.A. reduced. She is a very pretty boat, reminiscent of Mr. Gosnell’s old “Janet” and a larger edition Her of Mr. D. Pingent’s delightful “Trixie II.” section, coupled with her rather large wetted surface area and small S.A., militate against her in light weather. She is decidedly better in salt water than she is in fresh water as this makes her float higher. In heavy winds she is a boat to be reckoned with, but in anything less than a moderately strong wind she seems under-canvassed. I have never seen Mr. Hatfield sail a boat better than he did at Gosport this year, and he is to be congratulated on attaining fourth place in such hot competition. * * * The Mayor’s Dinner was held on Wednesday, August 8, and was presided over by the Mayor of Gosport, Alderman H. T. Roberts, O.B.E., J.P. This function took place at the Tower, Lee-onSolent. and was notable for two outstand’ng features. The first was the extremely witty and amusing speech in which Mr. B. Priest gave the toast of the Mayor and Corporation of Gosport, and the 500 OCTOBER, second to was the presentation of a silver but they had a re-sail down wind. loving-cup our friend, Mons. H. Boussey, of France. This presentation was made on behalf of the Model Yachting Association by the chairman, Mr. eighth an Steinberger, in an admirable address, part in English first competed in races for the “Yachting Monthly” for Handicapred by lack of good sailing waters testing and entered tuning our races. improved, and his up, Year skill he has _ nevertheless and by year, his yachts have as a skipper increased, failing this, present it gave him and regard. In his reply us with to Mr. all this the greatest token of Steinberger, pleasure our esteem M. Boussy, yacht of his work racing. in furthering year—‘Vivianne” (H. up one terrific run which was the and sufficed to Scores for the 24, “Vivianne” down the lake in straightened * tiller, into trouble into with ‘““Vivianne” proceeded in But M. Boussy once x his already onerous duties. : By way of tailpiece, may I thank the good ladies of the Gosport M.Y.C. who worked so hard and cheerfully in the canteen to cater for the needs of hordes of hungry model yachtsmen and their friends? Salute the Ladies! 1.52min., L. fastest run ever made on this lake, win her the “Wing and Wing” Cup. day were: “Calypso” 31, “Revanche” 5, Corrooin was assisted by his daughter as and Sunday, August 12,—The wind was still S.W.. but had moderated somewhat from the gale of the previous day. During the fifth round M. Boussy discovered that his tiller was slipping on the rudderhead. He tightened this up, but failed to cure his trouble, and the boat continued to perform erratically. Evidently the tiller had got strained during the previous day’s gale. Only one round was sailed during the morning, and by the time sailing started again after lunch, the wind had again hardened. run During the buckled As usual, arrangements for the Regatta were admirably made by the Gosport M.Y.C. Especial thanks are due to Mr. W. G. Baker, for not only did he act as the Secretary-Treasurer of the Regatta Committee, but when Mr. A. J. Bell, who had been appointed Officer of the Day, fell ill, Mr. Baker stepped into the breech, and added this task to Boussy, France), “Revanche” (Kai Ipsen, Denmark), and “Calypso ” (A. Jurd, Gt. Britain). It was arranged to sail five rounds on_ Saturday, August 11, and five rounds on Sunday, August 12. Sunday, August 11.—When racing started, it was blowing a full gale from the S.W. Right from the start, the French boat seemed to be in trouble with her steering gear, and utterly failed to maintain the excellent form she had shown during the British Championship. She was also dogged by bad luck. Time and again she gained a lead, particularly down-wind, only to broach off or run off the course in the last quarter of the lake, while to windward she seemed to be sailing unevenly on the two tacks. Meantime, of course, the British and Danish boats were piling up points. Only one round was sailed before lunch, and three rounds during the afternoon. Hard as the wind had been blowing during the morning, it increased in strength during the early afternoon, and all three competitors carried their smallest canvas. During the afternoon, “Calypso” put tiller again, by his good sportsmanship and courage under adverse circumstances showed us those qualities which had been commemorated in the presentation made to him by British Model Yachtsmen, There were only three entries for the Y.M. Cup this a proved a doughty opponent. international THE INTERNATIONAL RACE Race also his boat put her out of the running, as on her showing during the British race, she should have M.Y.R.U., with a handsome bronze medal in com- memoration had “Revanche” (Denmark) 54, “Vivianne” 114. It was a great vity that M. Boussy’s trouble with on behalf of French model yachtsmen, present ed Mr. Chas_ Seabrooke, secretary of the International model “Vivianne’s” the ninth round to show something of her true quality against “Revanche.” A terrific ding-dong battle down wind resulted in a dead heat, and to windward she handsomely beat the Dane, taking four of the five points out of her. But, alas,. this effort came too late, for “Calypso” won her re-sail against the Dane down wind and also beat her to windward, thus puiting herself in an unassailable position, and bringing the race to a conclusion in the ninth round, Final scores were: “Calypso” (Britain) 694, but always the coveted trophy has evaded him. Yet he has always shown great good sportsmanship, and amply proved that it is a greater thing to be a good loser than to be a winner. Nothing would give British model yachtsmen more pleasure than to see M. Boussy annex the Y.M. Cup, and, to She her jibs. While her mainsails were made of Terylene, M. Boussy had not been able to obtain sufficient for his jibs, which were made of a plastic material developed for dinghy spinnakers, and in the heavy winds this stretched all shapes. During the 7th round he was lent a Terylene jib, and with this O. and part in French. Now, it is some twenty years since Mons. Boussy Cup. round, S-shape. 1956 “man mate, enjoyed size” co-operation from his fair helper instance — as this carrying shot! The S.W. wind gave a good beat and run, and in these conditions the British boat more than maintained her lead. At the end of the eighth round the British yacht had 61 points to the Dane’s 52, 501 PYLON WITH TO FEED RUBBER SEAL MAIN—-SAIL SHEET INTO HULL IS ESSENTIAL F RUBBER SEAL \ K Berek tA \ / H M / SERVO MOTOR hes HAS. WORM / REDUCTION GEAR PULLEY ARRANGEMENT A WINCH HAS STEPPED DIAM. DRUMS CUT-AWAY DRAWING TO WIND ‘BOTH SAIL SHEETS SHOWING ARRANGEMENT EQUAL AT SPEEDS OF COMPONENTS OF RADIO CONTROL GEAR Radio Controlled Yacht HE model described here was built to the “Spiel und Arbeit” (“Play and Handicraft’), “Seeadler” (“Sea-Eagle”) plan. The hull length of this model is 1.60 m.—63 inches. Modification necessary was very little, except that the fin keel had to be hollowed to a large extent (see sectional view). This is done to accommodate the largest possible number of batteries which are required to feed the servo motors and selector switch (escapement). It is necessary to watch the C.G. location both vertically and horizontally while deciding on battery location inside the keel and, of course, one has to deduct as much weight from the lead ballast as power supply batteries and R/C gear take up, all told. A vital requirement is a big hatchway or removable deck section, so that all the control mechanism can be readily serviced and supervised. Watertight sealing here is vital. We managed to get all we wanted through featuring a rather large central cabin, which was made removable, including cockpit section. By Toni Happach Translated by Hans Pfeil AN INTERESTING LAYOUT FROM OUR GERMAN CONTEMPORARY ““MECHANIKUS” The Control Gear The radio-control equipment used is single channel. We strongly recommend using a commercial type of receiver, all ready and wired. Things are tricky enough without building this item oneself. By using a telephone type selector switch (dialling switch), our single channel transmitter can be made to send as many impulse signals as “numbers” are dialled. The receiver in the boat will receive and feed to the relay a corresponding number of impulses. The receiver is wired to a telephone type pre- selector switch. Such a selector switch will tick over as many contact points as the dialled signals indicate, till it comes to rest at the appropriate contact pair as soon as the impulses stop. The circuits closed switch on two small, powerful, low voltage electric motors (eg., Distlers) to run either clockwise or anticlockwise. Up to and including the receiver relay, everything is straightforward and normal. The 518 ———ZT NOTE a i} | VSPA AY hi Sy. / OCTOBER, re-wind line does not really matter as long as one knows which is what. To illustrate what goes on as soon as a “command” comes in, let’s describe what happens on position No. 3= 3 impulses. This is according to the wiring diagram legend, paying out line for both jib and mainsail. Let’s first list the five working positions and their dialling numbers :— No. 3: Pay-out line for both jib and mainsail. No. 6: Wind-in line for both jib and mainsail. No. 8: Left rudder. No. 11: Right rudder. No. 12: “Zero” position (neutral), for all four above. When dialling No. 3, the transmitter radiates economise on the contact springs, not to forget those “loading” the selector. This is quite a current saver, so one should study the selector switch layout carefully and decide what parts to retain, and which to drop out and discard. Furthermore, we found it most useful to rewind the selector switch (relay) coil to suit 4 volts only. Telephones, at least in Germany, operate at quite a higher voltage (24 v.). If the relay coil is re-wound for 4 volts, small accumulators in lieu of batteries may be used, which is most useful and money-saving. Naturally, any other pre-selector switch and dial combination may be used. However, the switch and dial should have four working positions plus one neutral. Two positions are used for each motor, to give clock and anticlock rotation, the motors being connected by worm mechanisms to the controls. One motor is a straightforward rudder drive, giving full left or right rudder. The second servo motor has about the same basic worm drive gear assembly. This one operates a small winch with stepped dia. drums, under the cockpit. The winch controls the sheets of both main and jib booms. Which direction of running is used to pay out or to HEADING CUTAWAY CODE LETTERING three impulses (signals). These three are picked up by the receiver inside the boat, passed on to the receiver relay and the three impulses transmitted to the pre-selector switch cause rotation to position 3. This brings into operation the winch servo motor. Both lines, operating jib and mainsail, are being paid out from the winch drums. As soon as we think we have a sufficient quantity of line paid out, the number “9” is dialled, which augments (3 +9= 12) the previously dialled number to “zero” position. Thus the transmission of a “command” is completed. (Selector switch jumps back to “0”). Now, a few “vitals” as regards the winch. Note that drum dia. is stepped to achieve (continued on page 523) WINGH TELEPHONE TYPE ROTARY SELECTOR A RECEIVER RECEIVER RELAY C PRE-SELECTOR ON Texiiosd JIB AND AND WINCH SHEET OPERATION RUDDER SERVO SELECTOR RELAY MOTOR AERIAL SOCKET AND PLUG RELEASE RETRIEVE MAINSAIL SHEET MAINSAIL BOOM EE ANS SE 9 JIB SHEET JIBBOOM H/T BATTERY (TWIN CELLS) L/T BATTERY THREE INDEPENDENT BATTERY BOXES TO SUPPLY RUDDER-SERVO SERVO MOTOR RIGHT (7 POWER FOR OPERATION OF WINCH, SELECTOR j MAINSAIL AND PRE- LEFT NN ie ( SIGNAL Eee: @ — DRIVE OTT RECEIVER BATTERIES id MOTOR FOR 4 S (EX-TELEPHONE ria WINCH : i 34 . \ MAINSAIL TYPE) D i TO B FA _ pre-selector switch is ex-telephone and in view of the fact that we do not require the full number of 12 pairs of contact points, nor the full row of contact points, the selector may be lightened and modified. There will be less contact pressure required, so that one can also 1956 BATTERIES 1956 a OCTOBER, larger, and no doubt most builders will make their own. The cowl vents can be made as Moving aft we have another cargo winch and a hose-reel which, in our case, was made from described frequently in our columns, or once again suitable commercial products exist. The aftermost details are the warping capstan the inside of a photographic cassette in a thin ply frame. The deckhouse is again ply or balsa to choice and plugs in position as shown on which is a very simple block of wood with a dowel drum fitted, and the rope rack which the for materials of There is a wide choice assembly of small (1/32 x 1/16) strips of funnel, our own selection being a card mailing is an Bollards, etc., are as previously timber. paper, gummed tube. Alternatives are rolled mentioned. paxolin, soldered tinplate, etc. The lifeboat on Rigging, etc. and internal details will be the prototype is a 6d. toy duly boarded in and t next painted; we used Yeoman davits for quick- covered in our concluding instalmen month. fraction a ness, but the davits should strictly be the drawing. a RADIO CONTROLLED YACHT _ equal line pay-out to both sails, in view of the different boom-lengths. We recommend nylon thread as the ideal material for the sheets. Note the pulley arrangement inside the boat hull, for the jib sheet. Of course, the pulley wheels must be so shaped that the line won’t slip off nor encounter too much friction, and it is a wise measure to make the moment arms on both main and jib boom as long as may be, so as to minimise the effort required. Thus, the load on the motor is kept to the minimum. A point which does crop up is the possibility of devising some means of light spring loading. to avoid tangling when the sheets are slack, as when in irons, etc. We mentioned watertight sealing of hull earlier on. To achieve this, we devised a special sort of air-seal where the sheets pass out of the hull. A 3 in. sq. of bicycle inner tube was punctured with a needle, carrying the nylon thread through. The deck is drilled a little over-size. The rubber pad then goes in place from inside the deck. Another “must” for proper mainsail operation is the “pylon” inside (Continued from page 519) the yacht’s cockpit as shown. This replaces the normally used “traveller” insofar as making a rather universal attachment. The power supply (batteries) is another very important item. Never double up functions of a battery pack. Use one for receiver L.T., one for receiver H.T. Yet another one is used to feed the rotary selector switch (actuator) and one each for the two servo motors. It is also an excellent scheme to use accumulators in lieu of easily drained batteries. Initial investment in small reliable accumulators is well worth the money spent, and the weight increase thus incurred is negligible for boating requirements. It is possible to replace the telephone dial selector switch at the transmitter by a normal push-button keying switch. In such a case, the number of signals sent should carefully be counted. To insert the receiver antenna, which preferably should be a whip-type piano wire affair, install a socket inside the hull. Make the passage through the deck watertight with either a length of bicycle valve tubing or neoprene, at the appropriate height. STOP PRESS! CAR NATIONALS RESULTS Model Car Nationals scheduled to take place on the Chiltern Track, near Luton, on August 26, were literally washed out—yet another “rain stopped play” casualty of 1956. They accordingly took place at the next Open Day, which meant that Blackpool was the host club on September 9. (Just fitted in for the Iluminations, too!) Next month we shall give full results in all classes, with a good showing of pictures, meanwhile here are the class winners 112.21 m.p.h. J. Dean 10 c.c. 94.73 m.p.h. Es P, Zere ae os of F. S. Drayson . 81.22 m.p.h. 24 c.c. 71.82 m.p.h. F. S. Drayson 14 c.c. Numbers competing were best for some years, competition was extremely keen, weather excellent for this year though very cold (58° with humidity nearly 90°). In comparing speeds with those attained: at European Nationals (this issue) readers must remember that M.C.A. braided cable was used over here, against the lighter piano wire that suffices on the Continent. : — and speeds 523
