RADIO CONTROL MODEL YACHT BUDGIE ONE DESIGN CLASS CLASS RULES

Transcription

1 1 RADIO CONTROL MODEL YACHT BUDGIE ONE DESIGN CLASS CLASS RULES 1. INTRODUCTION 2. BUDGIE CLASS SPECIFICATION 3. CLASS PHILOSOPHY 4. HULL AND DECK 5. KEEL / BULB AND RUDDER 6. DECK FITTINGS 7. SPARS AND RIGGING 8. SAILS 9. CRITICAL WEIGHTS ISSUE 3 April 2012

2 2 1. INTRODUCTION The Budgie Class has been adopted by the Budgie Model Sailing Group, Victoria, as a strict One Design Class. The intention of these class rules is to provide a specification for moulding identical hulls to produce identical boats. The class will be regulated by the Budgie Model Sailing Group, except that in the event of the class attaining the status of a State or National Class, control of the class will be as determined by the appropriate authority approving the class status. These rules shall be read in conjunction with the ISAF Equipment Rules of Sailing. Anything not specifically permitted in these rules is prohibited. Requests for a class rule interpretation shall be submitted to the class authority. When interpreting any rule, the class authority shall consider the intended meaning and at all times shall bear in mind the basic principles of these class rules, which is to maintain the Budgie as a One Design Class. 2. SPECIFICATIONS Length Overall mm. Beam mm. Sail Area sq.m. Draught mm. Displacement kg. Mast Height mm. NOTE: See following paragraphs for tolerances to the above specifications. 3. GENERAL COMMENT ON CLASS PHILOSOPHY 3.1 The definitions, dimensions, tolerances and restrictions provided in these rules are intended to strictly maintain the one design features of the class. The objective is to provide fair sailing between equal boats, where tuning and sailing skills are the primary deciding skills in competition. 3.2 Building materials for the class are restricted to adequate technology to achieve quality boats for a reasonable expenditure. 3.3 Construction materials are limited to fibreglass, timber, plywood, aluminium and lead or lead/antimony alloy and carbon fibre for spars.

3 3 3.4 Radio control is restricted to two operating channels, one operating the sail controls and the other the rudder. 3.5 The class is limited to two rigs as detailed in Section The choice of more than one keel/bulb assembly is permitted provided the boat is within the permitted weight as detailed in Section During competition a boat must at all times comply with the class specifications. 4. HULL AND DECK 4.1 Boats shall be produced from a mould and by a manufacturer approved by the Budgie Model Sailing Group, except that in the event of the class attaining the status of a State or National Class, the authority for this approval will be determined by the appropriate authority approving the class status. 4.2 The overall length of the hull shall be a maximum of 1200 mm as determined by the class mould. 4.3 The maximum beam, (excluding chafing strips) of 250 mm shall be at Station Hull material shall be restricted to fibreglass, although resin type is unrestricted. The interior of the hull must be left unpainted or without pigment to allow inspection. 4.5 Alterations to hulls by any means, including the addition of any material to the exterior of the hull that would change the shape in any way, is prohibited. 4.6 The size, location and angle of the keel and rudder must conform to the approved class drawings, with a tolerance of plus 5 mm or minus 5 mm on any dimension. 4.7 All hull and deck framing must be similar in principle to the approved class drawings. 4.8 The deck must be plywood of a minimum 0.8 mm thickness. Hatches are permitted to access below deck equipment. No other deck penetrations for the purpose of lightening the deck are permitted. 4.9 The bow shall be fitted with an effective bumper in elastomeric material of a minimum longitudinal thickness of 20 mm at the deck line and faired to the hull Hull registration number will remain on the internal surface of the hull Transport weight of hull shall mean the total overall boat weight, ready to sail, except for keel/bulb, rig, sails and batteries. This transport weight must not be less than 900 grams See Chapter KEEL / BULB AND RUDDER 5.1 The keel/bulb assembly shall be removable from the hull.

4 4 5.2 The keel fin and rudder shall be timber, plywood or fibreglass or a combination of these materials and shall comply with the shapes and sizes shown on the approved class drawings, within a dimensional tolerance of plus 2 mm or minus 2 mm. 5.3 The keel bulb shall be of lead or lead/antimony alloy and be of similar shape to that shown on the approved class drawings. Keel bulb assembly will weigh between 2550 grams and 2650 grams See Chapter The distance from the underside of the hull to the lowest point on the bulb, along the leading edge of the keel fin, shall not exceed 400 mm. 6. DECK FITTINGS 6.1 Deck fittings shall be similar in principle to those shown on the approved class drawings. 7. SPARS AND RIGGING 7.1 The mast spar shall be non-rotating. Swing rigs are not allowed. 7.2 The mast spar shall be carbon fibre tube, of circular outer shape with a lower section maximum outside diameter of 12 mm and an upper section maximum outside diameter of 10 mm. To be fabricated as shown on the approved class drawings. 7.3 Boom spars shall be aluminium or carbon fibre with a maximum outside diameter of 10 mm. 7.4 Except for terminations and the headsail boom swivel, standing rigging shall be stainless steel fishing trace wire. Backstay may be stainless steel fishing trace wire or fabric sheet cord. 7.5 Standing rigging shall be restricted to a maximum of that shown on the approved class drawings. 8. SAILS Sails must be compliant with the International One Metre Class (IOM) 8.1 Two rigs are allowed : A rig and B rig 8.2 The interchanging of sails between the rigs is not permitted. 8.3 The construction shall be soft sail, single ply sail. 8.4 The mainsail dimensions shall be:- Luff length A Rig maximum 1600 mm B Rig maximum 1180 mm Leech length A Rig maximum 1620 mm minimum 1610 mm B Rig maximum 1210 mm minimum 1200 mm Foot length A Rig maximum 360 mm minimum 350 mm B Rig maximum 350 mm minimum 340 mm

5 5 Mainsail girth dimensions shall not exceed those shown on the IOM class drawings where the maximum allowable tolerance shall be minus10mm. 8.5 The mainsail may have up to three sail battens with a maximum length of 80 mm. 8.6 Any method of attachment to the mast is permitted, subject to class rule 7 Spars and Rigging Paragraph The jib dimensions shall be:- Luff length A Rig maximum 1600 mm B Rig maximum 1180 mm Leech length A Rig maximum 1620 mm minimum 1610 mm B Rig maximum 1210 mm minimum 1200 mm Foot length A Rig maximum 360 mm minimum 350 mm B Rig maximum 350 mm minimum 340 mm Jib girth dimensions shall not exceed those shown on the IOM class drawings where the maximum allowable tolerance shall be minus10mm. 8.8 Identification on sails must comply with the RRS. 8.9 The class insignia shall be placed on the mainsail above the sail numbers and be either supplied or approved by the Budgie Model Sailing Group, except that in the event of the class attaining the status of a State or National Class, the appropriate authority. 9. CRITICAL WEIGHTS FOR CLASS COMPLIANCE 9.1 MOULDED WEIGHT Hull complete with inwales supplied by the Manufacturer to be a minimum weight of 350 grams. 9.2 TRANSPORT WEIGHT as defined in Chapter 4, Paragraph grams minimum. This weight can be checked and verified at any time during the life of the boat. 9.3 KEEL WEIGHTS Keel/bulb assembly to be between 2550 grams and 2650 grams. 9.4 All the above weights to be recorded in the Budgie Class Register, by the responsible Class Officer.