Sinple Rat Race
Rules
9. |
Simple 2.5cc Rat Race |
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9.1. | General | ||
Simple rat race is similar to 2.5cc rat race, but using low price non-racing engines. The racing should be close with no teams possessing an overwhelming advantage. Rat Race rules shall apply unless specifically changed by these rules. | |||
9.2. | Circle Layout | ||
The layout shall consist of 2 concentric circles which shall be marked out on grass. (or concrete in exceptional circumstances) | |||
9.2.1. | The pitting circle: Radius 19.6 metres | ||
9.2.2. | The centre circle: Radius 3 metres | ||
9.3. | Characteristics of a Simple Rat Race model | ||
9.3.1. | Maximum Engine capacity: 2.5 cc | ||
9.3.2. | Engine shall be an unmodified, non racing engine. The following engines are currently acceptable. | ||
9.3.2.1. | Plain Bearing: O.S, Enya, PAW, Thunder Tiger, Taipan, Webra and Silver Swallow. | ||
9.3.2.2. | Ball Race: Taipan BR diesel. | ||
9.3.2.3. | Other engines may be acceptable at the C.D’s discretion, provided they fit into the spirit of the event (Prior approval required). | ||
9.3.3. | A commercially available wood, nylon or glass reinforced nylon propeller must be used. (ie no Carbon or Glass Epoxy props eg Bolly,Supercool etc) | ||
9.3.4. | Model design is unrestricted but engines shall be uncowled. | ||
9.3.5. | Fuel system shall be suction feed only. No crankcase pressure, bladders or pacifiers are permitted. | ||
9.3.6. | A fuel shut-off must be fitted to all simple rat race models. The model must be able to land within 10 laps at the C.D.’s request. | ||
9.4. | Control Systems | ||
9.4.1. | Line Length: The length of the control lines must be 15.92 +100 – 0mm. The length is measured from the face of the grip on the control handle to the centre line of the model. | ||
9.4.2. | Control lines: two multi-strand control line wires of a minimum diameter of 0.3mm must be used. | ||
9.4.3. | Line test: A pull test of 20g shall be applied for 5 seconds to the model/line combination. | ||
9.5. | Conduct of Races | ||
9.5.1. | Race shall consist of 2 heats and a final. The three highest heat scores will go into the final. | ||
9.5.2. | Heat time will be 5 minutes with one compulsory pitstop. | ||
9.5.3. | Final time will be 10 minutes with two compulsory pitstops. | ||
9.5.4. | Whipping is not permitted except on take-off and landing. | ||
9.6. | Safety | ||
9.6.1. | Mechanics must wear a safety helmet fitted with a chin strap worn under the chin. | ||
9.6.2. | Pitting segments must be used at all times. | ||
9.6.3. | Landing models shall clear the lines of models being pitted by at least 200mm. | ||
9.6.4. | Dangerous flying may lead to disqualification. |