5.4.1.1 AIRCRAFT CATEGORIES

(a) Antique Aircraft are defined as aircraft which were designed, kitted or published on or before 31^st December 1938.

(b) Old Timer Aircraft are defined as aircraft which were designed, kitted or published on or before 31^st December 1942.

(c) Nostalgia Aircraft are defined as aircraft which were designed, kitted or published on or after 1^st January 1943, and on or before 31^st December 1956, and having a combined wing and horizontal stabiliser of not less than 225 sq inches per 0.1 cubic inches of engine capacity, (see clause
5.4.1.2. (b))

(d) MK 17 Aircraft are defined as aircraft which were designed on or before 31 st December 1959 and having a combined wing and horizontal stabiliser area of not less than 350 sq inches. (Special Event)

(e) "A" Texaco Aircraft are defined as aircraft designed, kitted or published on or before 31^st December 1956. (Special Event)

(f) 38 Antique Aircraft are aircraft which were designed, kitted or published on or before 31^st December 1938.

(g) ONEcc Aircraft are aircraft designed and built on or before the contest date. (Special Event)

(h) TWOccCOM Aircraft are aircraft designed, kitted or published on or before 31^st December 1956. (Special Event)

(j) Stand off Scale Texaco Aircraft are aircraft of any period and are required to reasonably represent the full size aircraft.(Special Event)

N.B. For [a] and [b] there is an extension of 4 years for normal "Vintagents" club contests but not those listed as SAM events

5.4.1.2 AIRCRAFT GENERAL REQUIREMENTS

(a) Where the specific rules for an event state that the minimum wing area rules apply defined in this clause, models used in those events shall comply with the following: Models fitted with engines manufactured after 31^st December 1950, except for approved reproduction engines as defined in 5.4.1. 3. (e), shall have a minimum wing area 225 square inches per 0.1 cubic inch of engine capacity, [see 5. 4.1. 3. (d) for models fitted with 4-stroke engines]

(b)The formula to be used to determine the wing area is: WING AREA = CHORD X WINGSPAN where: The Wingspan is defined as a straight line dimension from wing tip ving tip, with no allowance being made for tapered or rounded tips, and the Chord measured halfway between the wing tip and the centre-line of the fuselage.

(c) Models heavier than 7kg shall comply with appropriate permits for over 7kg mod-. (Refer to CASR. Part 101).

(d) Old Timer, Antique and Nostalgia models may be modified in the following ways :-

(i)Rudder and elevators are the only flying surface controls allowed.

(ii) Minor changes to the thrust line are allowed for flight trimming..

(iii)Engines may be rotated from their original location provided that the thrust line is not altered under Rule 5.4.1.2.(d)(ii)

(e) Outlines, areas, moments and cross sections may not be changed except for direct scaling. Structures may be strengthened or lightened and provision for control sur-^^s may be added. Airfoil sections must be the same as on the original model. Landing gear must be in the same location as on the original model; however,single wheeled main landing gear designs may be modified to dual wheel main landing-gear designs, using the same wheel size as the scaled plan from the original. All changes must be in the character of the original aeroplane.

(g) No modification may be made which would prevent the model making a normal, unassisted rise off ground (ROG) take off. The following are not permitted: - jettisoning undercarriages, vertical take off, or catapult devices,

(h) It is permissible to scale an approved design up or down, provided a copy of the original plans is used for scaling, (models for the R/C ‘38 Antique contest must not be scaled).

(j) One reserve model is permitted in each event in Oldtimer contests. A competitor may interchange various parts as he wishes provided the resulting complete model coforms to the requirements of these rules and that the parts have been checked before the start of the contest.

(a) All engines must be of conventional reciprocating piston design. Turbines, Wankels or non-reciprocating designs may not be used.

(b) The use of engines of 0.65 cubic inches (10.65 cubic cm) capacity and above is restricted to antique spark ignition engines only.

(c) All other engines shall be less than 0.649 cubic inches (10.64 cubic cm) capacity.

(d) Sixty percent (60%) of a four-stroke engine capacity shall be used when calculating the wing area of a model in Rule 5.4.1.2.(a)

(e) Antique engines are defined as engines that were initially manufactured on or before 31^st December 1950, or as any reproduction antique engines approved by MAAA R/C Assist Old Timer Rules sub-committee.

(f) No folding, freewheeling, variable pitch or single bladed propellers shall be permitted.

(g) All engines, except ½ A engines, shall be fitted with an effective cut-off which will stop the engine within five (5) seconds of the transmitted R/C command. Neither full rudder nor full elevator is satisfactory to operate the cut-off.

(h) Spark ignition engines are those engines using cam operated points, spark plugs, batteries, coil and condenser or magneto to ignite the fuel. Transistor amplifiers may be added to the ignition points.

(j) All two stroke glow / spark ignition engines must operate with the muffler supplied with the engine or an approved muffler,

(j) N.B The exceptions are engines used in Antique 38,¹/2 A, Onecc, Class "A", Stand off Scale, TWOCCCOM and 2cc events. (This rule does not apply to engines used in Nostalgia aircraft.)

(k) The use of mufflers is encouraged on all engines.

(I) Tuned pipes are not permitted.

(m) The current MAAA noise limit is to apply to all models flown in "NOMINATED NOISE SENSITIVE AREAS" Rule 5.4.1.3.(I) will not apply to models if they meet MAAA noise limit when measured in the prescribed manner. (See MAAA Rule 2.9) The suspension of Rule 5.4.1.3.0) will only apply to models when they are flown in nominated Noise Sensitive areas,

 (n) The terms two stroke and four stroke refers to two stroke cycle and four stroke cycle.

5.4.1.4 FUEL SAFETY

(a) The use of Tetra-nitro-methane, Nitrobenzene and Hydrazine or any other substance banned by the MAAA as fuel or additives in any fuel is prohibited.

(b) The general requirements set out in this section apply to the specific Old Timer events described in the included "Vintagents" 2004 rule book.

(a) In any area where CASA height limitations are likely to occur, contest organisers are required to apply the following rule: in Duration Events - All engine run times to be reduced to sixty percent (60%) with a proportional decrease in maximum flight times. All other times (e.g. attempt call, over-run etc) are to remain unaltered. Organisers of Old Timer contests shall make every effort to conduct these contests at fields which have an approved height clearance of 1000 or 2000 feet above ground level or to arrange such a clearance from the Civil Aviation Safety Authority through their State association.

(b) Five (5) contestants shall constitute an event at state level. The contestants score for a flight is calculated by allocating one point for each second of flight time as defined in clause 5.4.1.5.(e) up to the maximum flight time imposed for each event. Scoring is to be rounded off to the nearest second, i.e. 10.5 seconds is 11 seconds, 10.49 seconds is 10 seconds.

(c) All models, except Gordon Burford Event, Vintage Glider, Nostalgia and Onecc shall rise off ground (ROG). The Contest Director may declare the field unsuitable for ROG of 1/2A Texaco and 2cc models at the start of the competition and allow hand launches.

(ii)The second attempt does not have to follow the first attempt immediately.

(iii) Timing of a flight starts when the model is released with engine running. Timing stops when the model first touches the ground or other stationary object. In the vintage glider event, timing commences when the model is released from the tow-line.

(j) Refer to the specific event rules for additional fly-off requirements for each event.