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Aviation History
1935
1935 - 0210.PDF
112 FLIGHT. JANUARY 24, 1935. MODELS A New A. E. Jones Petrol Engine : Indoor Flying : 1935 Competitions A NEW 9 c.c. ENGINE P OWER-DRIVEN-MODEL enthusiasts will, we think, wel come the arrival of the latest model petrol engine just produced by A. E. Jones, Ltd., of 97, New Oxford Street, London, the makers of the successful "Atom Minor" engines. Not only is the " Andrich " engine, as it is called, of the size and power that should appeal to a greater number of model builders than did its larger brother (or sister, as the case may be!), but, judging from our inspection of one of these engines, it would appear to possess a performance that should rank it amongst the most successful of model petrol engines yet produced. At the moment we are not at liberty to give many details concerning its construction, but it is a featherweight high- performance engine of only 9 c.c. capacity, operating on the two-stroke principle, and using a petroil mixture. Its weight, complete with sparking plug, contact breaker, carburetter, and two-minute fuel tank, is 8 oz. Driving a i3fin. diameter airscrew of approximately i2|in. pitch at 3,600 r.p.m., it develops about .125 b.h.p. The fuel tank is formed with the carburetter, and various sizes may instantly be fitted giving any duration; the fuel used is Shell No. 1 and " Mobiloil " in proportion of 6-1. The cylinder is produced from a solid bar of steel, specially heat-treated to ensure a glass-smooth bore and hard-wearing properties. The piston, fitted to fine limits, is of aluminium alloy, and has two T5m- Wellworthy rings, while the gudgeon pin is of steel, hardened, tempered and ground, and fitted with bronze retaining caps. The connecting rod is machined from solid duralumin, and the main bearing is of cast iron, pressed in the crank case, which is a light aluminium casting, specially strengthened and webbed to withstand shocks likely to be encountered when used on model aircraft. A specially designed contact breaker incorporates totally enclosed oil-proof contact points. This may be seen in our illustration just above the crankshaft, between the airscrew and the crank case. The overall dimensions of the "Andrich" engine are; Height, 5£in. ; length (from airscrew face to carburetter), 4|in.; width, 2fin. S.M.A.E. COMPETITIONS THE following dates have been fixed by the Society of Model Aeronautical Engineers for the 1935 competitions: — April 22.—Elimination Trials for selecting the British team to be sent to America for the Admiral Mofiett Trophy Contest. May 12.—Gamage Cup Competition. June 16.—Gliding Competition for " M.E." No. 1 Cup. July 7.—Power Competition for Sir John Shelley Cup. August 4.—National Competition for the S.M.A.E. Cup. August 5.—International Competition for the Lord Wakefield Cup. August 25.—Scale Model Flying Competition—C.S.S.A. Cup. September 8.—Seaplane Competition—Lady Shelley Cup. September 29.—Speed Competition—Flight Cup. October 31.—Closing date for Farrow Shield Contest. MASS PRODUCTION : Component parts, and a finished example, of the all-metal Rigby "Swallow"—of which severa* thousands were recently constructed'. (Flight photograph.) The A. E. Jones '' Andrich '' model petrol engine is a two-stroke type of 9 c.c. capacity. The combined carburetter and petrol tank may be seen at the rear ; various sizes of tanks are used to suit the duration of flight required. SKYBIRD LEAGUE THE second annual Skybird League Rally and Competition of Scale Model Aircraft will be held in April next. In addition to the competition for the best model submitted by a club, there will be an open competition for all individual mem bers, both club and associate. There will be awards for com petitors under 16 and over 16, and in addition to the challenge cups there will be an interesting list of awards, including an autographed copy of King oj Air Fighters, presented by Fit. Lt. Ira Jones. INDOOR FLYING MEETINGS ONCE again a series of these popular meetings have been arranged by the Model Aircraft Club (T.M.A.C). They will be held, as before, at the Royal Horticultural Hall, Vin cent Square, Westminster, from 7 to 9 p.m., on the following Wednesdays: January 30, February 13, and March 13. MODERN MODELS I T is the intention of Flight to publish in this section brief illustrated descriptions of successful flying models, and possibly constructors of such machines would care to submit them—together with technical data—for inspection and the preparation of sketches. THE MODEL FLYER'S GUIDE FROM F. R. Barnard, the "North London Aeromodel Specialist," of 2a, Hornsey Rise, London, N.19, comes a handy reference book for aeromodelists. Besides giving a number of useful hints and tips on construction and materials, a list of Model Clubs, records and competitions, it also con tains particulars and prices of model aeroplane kits and draw ings, materials and accessories for constructing models, and outline drawings of well-known British aircraft. The price of this guide is 3d.
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