MAAA Specific Event Rules for Old Timer

5.4.3. O.T. TEXACO

Description: This is a fuel economy event where the aim is to achieve maximum flight times from limited allocations of fuel, based on model weight.

5.4.3.1. Aircraft eligibility.

(a) This event is for Antique aircraft only as described in rule 5.4.1.1.(a)

(b) The minimum wing area rule 5.4.1.2.(a) applies to this event.

5.4.3.2. Engine eligibility.

(a) This event is open to any class of engine conforming with section 5.4.1.3.

(b) All glow plug engines must run unassisted, without external power to the glowplug, otherwise they will be classified as four stroke spark ignition engines.

5.4.3.3 Fuels.

(a) Contestants using diesel engines shall supply their own fuel, which must comply to clause 5.4.1.4

(b) The standard 4 stroke fuel supplied by the event organisers shall contain:

15% oil, 5% nitromethane and 80% methanol.

5.4.3.4 Fuel allocations.

(a) The following fuel allocations apply and are based on engine type and relate to model weight.

(i) Antique Engines (spark ignition & diesel) 8.8 ml/kg (4.0 cc/lb)

(ii) Four stroke spark ignition 3.3 ml/kg (1.5 cc/lb)

(iii) Diesel engines 4.4 ml/kg (2.0 cc/lb)

(iv) Four stroke glow engines 6.6 ml/kg (3.0 cc/lb)

using standard fuel as supplied

by the event organizers

(v) Four stroke glow engines not using supplied fuel 4.4 ml/kg (2.0 cc/lb)

(b) The measured weight of the model for fuel allocation shall be rounded off to the nearest pound (lb)

e.g., 5.5lb to 6lb and 5.49lb to 5lb.

(d) To fill a limited fuel allocation model with the allocated amount of fuel, the following procedure is to be adopted in the presence of the timekeeper just prior to the flight being made:-

The engine must be stopped, remove the fuel line from the spray bar and drain the fuel tank system.

The measured fuel allocation in the syringe must be transferred to the model by depressing the syringe once.

Note. The fuel in any tube between the syringe and the tank may NOT be drawn back into the syringe and put into the tank.

5.4.3.5 Flight Procedures.

(a) Maximum flight time as defined in 5.4.1.5. is 10 minutes (600 points) for all rounds.

5.4.3.6 Fly-off

(a) If at the end of official flights a fly-off is necessary, it will be conducted as set out in rule 5.4.1.6.

(b) For the fly off, the longest flight shall determine the winner.

5.4.4. DURATION

DESCRIPTION: This is a limited engine run event where contestants attempt to achieve maximum flight times from limited engine run time allocations which are generally based on engine type.

5.4.4.1 Aircraft eligibility

(a) This event is open to all Old Timer and Antique aircraft as described in rules 5.4.1.1.(a) and

5.4.1.1.(b).

(b) The minimum wing area rule applies to this event as defined in clause 5.4.1.2.a)

5.4.4.2 Engine eligibility

(a) This event is open to any class of engine conforming with section 5.4.1.3 of these rules.

5.4.4.3 Fuels

(a) Fuels are unrestricted in this event except that prohibited fuel ingredients may not be used as defined in clause 5.4.1.4.

5.4.4.4 (a) Engine run time allocations:

i) 25 seconds: Any front induction, side exhaust two stroke glow engine including

Schneurle or PDP ported engine that is fitted with an approved or original factory muffler

ii) 28 seconds: Any engine defined as Antique Glow and fitted to an aircraft having a wing area greater than 170 square inches per 0.1 cubic inches of engine capacity

iii) 28 seconds: Any four-stroke glow engine having a pressurized air/fuel mixture induction system using other than muffler pressure

iv) 32 seconds: Any normally aspirated four-stroke glow engine other than engines covered by rule 5.4.4.4 (a)(iii)

v) 40 seconds: Any engine defined as Antique Spark Ignition or Antique Diesel and fitted to an aircraft having a wing area greater than 170 square inches per 0.1 cubic inches of engine capacity

5.4.4.5. Flight procedures

(a) The maximum flight time as defined in 5.4.1.5.f) is seven (7) minutes (420) points.

5.4.4.6 Fly-off

(a) If at the end of the official flights a fly-off is necessary, it will be conducted as set out in rule

5.4.1.6.

(b) For the fly off, the longest flight shall determine the winner.

5.4.5. 1/2A TEXACO

DESCRIPTION: This is a limited fuel allocation event using standardized engines and small models.

5.4.5.1 Aircraft eligibility

(a) The event is open to all Antique and Old Timer aircraft as described in rules 5.4.1.1.(a) and

5.4.1.1.(b).

5.4.5.2 Engine eligibility

(a) ½ A Texaco engines shall be limited to Cox reed valve, 0.049 cubic inch capacity engines typical of the following types:-

Black Widow, Golden Bee, Cox Texaco, Baby Bee and QRC and fitted with small (approx 5 cc) Cox fuel tank (Diesel conversions are not permitted).

(b) Engines may be modified in the following ways:

(i) relocation of the fuel pick up from the middle to the bottom of the tank;

(ii) addition of mufflers;

(iii) needle valve extensions are allowed.

(iv) cylinder heads may be drilled and threaded to accept a replaceable glow plug. This rule may only be exercised in the event of the original types becoming unobtainable.

NOTE: Throttles of any type are not permitted.

5.4.5.3 Fuels

(a) Fuels are unrestricted in this event except that prohibited fuel ingredients may not be used as defined in clause 5.4.1.4.

5.4.5.4 Fuel allocation

(a) The fuel allocation is a maximum small (approx. 5cc) Cox tank full, regardless of aircraft weight or size.

5.4.5.5 Flight procedure

(a) The maximum flight time as defined in 5.4.1.5.(f) is six (6) minutes (360 points).

(b) The model must land in the defined area for the flight to count towards the score.

5.4.5.6 Fly-off

(a) If at the end of the official flights a fly-off is necessary, it will be conducted as set out in rule

5.4.1.6.

(b) For the fly off, the longest flight shall determine the winner.

5.4.6. 2cc OLD TIMER DURATION

DESCRIPTION: This is a limited engine run event based on the duration event using small models and motors.

5.4.6.1 Aircraft eligibility

(a) This event is open to aircraft which were designed, kitted or published on or before the 31st

December 1956

5.4.6.2 Engine eligibility

(a) This event is open to all two stroke glow or diesel engines of 2 cc capacity and less. Rule

5.4.1.3.(j) applies to this event.

5.4.6.3 Fuels

(a) Standard fuel shall be provided by the contest organizers for 2 Stroke Glow engines comprising the following:

1 part Castor Oil and 4 parts Methanol.

(b) Diesel fuel may be supplied by the contestant and is unrestricted apart from compliance with clause 5.4.1.4.

5.4.6.4 Engine run time allocation

(a) The following engine run time allocations will apply:

(i) Any Schneurle or PDP ported engine ....... 20 seconds

(ii) Any other engine type ....... 30 seconds

5.4.6.5 Flight procedures

(a) Maximum flight time as defined in 5.4.1.5. (f) is five (5) minutes (300 points)

(b) The model must land in the defined area for the flight to count towards the score.

5.4.6.6 Fly-off

(a) If at the end of the official flights a fly-off is necessary, it will be conducted as set out in rule

5.4.1.6.

(b) For the fly off, the longest flight shall determine the winner.

5.4.7. R/C OLD TIMER GLIDER

DESCRIPTION: This event is to encourage the re-creation of suitable early design gliders and to fly them in a relaxed competition.

5.4.7.1 Aircraft eligibility

(a) The event is open to all gliders which were designed, kitted, or published on or before 31st

December 1950.

(b) All R/C Assist Old Timer rules in relation to the out line and construction of a model (including scaling) will apply with the following exceptions:-

(i) The number of ribs in the wings may be increased when enlarging a model to ensure wing integrity, but rib spacing must be the same or greater than that shown on the original plan.

(ii) When reducing the size of the original model, the number of ribs shown on the original plan must be retained.

(iii) Radio control of rudder, tow hook and elevator functions only are allowed.

5.4.7.2 Flight procedures

(a) All models may launch from bungee or hi-start or electrical-powered winch or may hand tow with

175 metre tow or pulley type hand tow. Winches are allowed.

(b) The maximum flight time as defined in clause 5.4.1.5.(f) is six (6) minutes (360 points)

5.4.7.3 Fly-off

(a) If at the end of the official flights a fly-off is necessary, it will be conducted as set out in rule

5.4.1.6.

(b) For the fly-off, the longest flight shall determine the winner.

5.4.8 NOSTALGIA

DESCRIPTION: This is a limited engine run event for nostalgia period model aircraft.

5.4.8.1. Model eligibility

(a) This event is open to all nostalgia aircraft as described in rule 5.4.1.1.(c)

5.4.8.2 Engine eligibility

(a) Any two-stroke cross scavenged engine fitted with either a factory or an effective muffler may be used. This muffler rule shall apply to any antique engine which fits this paragraph. No Schneurle or PDP ported engines are permitted and no engines fitted with ABC or AAC piston and cylinders are permitted.

5.4.8.3 Fuels

(a) Fuels are unrestricted in this event except that prohibited fuel ingredients may not be used as defined in clause 5.4.1.4.

5.4.8.4 Engine run times

(a) Engine Run.............................25 seconds

5.4.8.5 Flight procedures

(a) The maximum flight time as defined in 5.4.1.5. (f) is seven (7) minutes (420 points)

(b) The model must land in the defined area for the flight to count towards the score.

5.4.8.6 Fly-off

(a) If at the end of the official flights a fly-off is necessary, it will be conducted as set out in rule

5.4.1.6.

(b) For the fly off, the longest flight shall determine the winner.

5.4.9 R/C '38 ANTIQUE

DESCRIPTION: This is a limited engine run event for antique aircraft with engine run times based on engine type and performance.

5.4.9.1. Model eligibility

(a) This event is for Antique aircraft as described in rule 5.4.1.1.(a).

(b) Pylon type aircraft are specifically excluded from this event, only cabin, no-cabin-fuselage and cabane types are permitted.

5.4.9.2 Engine eligibility

(a) Only Antique Spark ignition or Antique Diesel engines may be used as defined in clause 5.4.1.3.(e)

(b) Antique engines which were made in both spark and glow forms may be converted from glow to spark provided that original or accurate reproduction parts are used in the conversion and the resulting engine is, to all appearances, an original spark ignition engine.

c) Any engine not listed or covered in or by groups listed in 5.4.9.4 c). shall be provisionally placed in Group 1 of that section until evaluated by the R/C Assist Old Timer Subcommittee.

The Subcommittee shall evaluate such engines as submitted to it and provisionally place each of these in an appropriate group and notify the owner/applicant in writing.

The engine will then be added to those listed in the printed rules on the re-issue of the MAAA Australian Official Rules when the Subcommittee is satisfied with the provisional grouping of the engine as shown in competition.

5.4.9.3 Fuels

(a) Spark ignition engines may use any mix of unleaded petrol, methanol and oil.

(b) Diesel engines may use any blend of fuel that complies with clause 5.4.1.4.

5.4.9.4 Engine run times

(a) Engine runs are based on a handicap system according to engine type and/or capacity used in the model and relate to model weight.

(b) The measured weight of the model for engine run calculations shall be rounded off to the nearest pound e.g. 5.5lb to 6lb and 5.49lb to 5lb.

Group 1 Engines: 12 seconds per pound

McCoy 60 Red Head Black Case, McCoy 60 Series 20, Dooling 61, Edco Sky Devil, Hassad Custom 60, Hassad Blue Streak 65, Hornet 60

Group 2 Engines: 16 seconds per pound

Anderson Spitfire (with sub-piston porting holes), Atwood Champion GD and DR, Orwick 64 and 73, Dunham Orwick 64, Cunningham Blue Streak 64, Daniel 64, Fox 59 long shaft, Nordec 60,

Rowell 60, Orr 65, Ball 60, Bungay 60, Hearns Hobbies Tempest 60, McCoy 49, Ken 60, Marden/Stevenson 60-65, and any other twin ball race front or rear induction .60 to .65 not listed in another group

Group 3 Engines: 19 seconds per pound

Atwood Champion models H, J, and JH, Atwood Super Champion, Anderson Spitfire (without sub- piston porting holes), Super Cyclone 65G, Super Cyclone 60CR, Pacemaker 59, O&R side port large exhaust stack, O&R 60 side port small exhaust stack (performance modified), O&R 60 front intake, McCoy Sportsman Senior 55 with McCoy spark conversion kit

Group 4 Engines: 24 seconds per pound

Contestor D-60S side port and Contestor D-60R rear rotary, Fleetwind 60, O&R side port small exhaust stack (standard unmodified), OK Super 60 and all other plain bearing or single ball race ignition engines from .57 to .99 not listed in another group

Group 5 Engines: 32 seconds per pound

Forster 99, Molnar 78 and 99, McCoy 29, Brown Junior 60, Dennymite 57, Bunch Tiger 45, Madewell 49, Atwood Triumph 49 and 51, Delong 45, Rocket 46, OS K6, Edco 49 diesel, Vivell 49er, and all other .40 to .56 not listed in another group

Group 6 Engines: 41 seconds per pound

Torp 24/29/32, Vivell 35, Comet 35, O&R 29/33, Delong 30, RB Steel 29/36, Orwick 29/32, Forster

29/305 (original rear disc, plain bearing and ball race), Super Hurricane 24, all Drone 5cc diesels, all GB 5cc diesels, Cannon 300/358, all Atwood 24/29 designs (including Torpedo Special, Phantom, Bullet), all OK 29/Mohawk 29, Frog 500 and all other engines from .236 to .39 not listed in any other group

Group 7 Engines: 60 seconds per pound

Amco 3.5 plain bearing diesel, Bantam 19, ED Hunter 3.46 diesel, Morrill Hornet 19, Ohlsson 19, Oliver Tiger Mk 1, Shilen 19, Orwick 23, Cameron 23, Baby Cyclone 36, all Model Dockyard Whirlwind, McCoy 19 Red Head, Arden 19, HS 23, and all other engines from .155 to .235 not listed in any other group

Group 8 Engines: 70 seconds per pound

Elfin 2.49 radial, GB 250 replica, Oliver Rapier/ Panther Jaguar/ Tiger Mk 1 front rotary, Mills 2.4cc, CIE and any engine from .141 to .154 no