Baja SAEINDIA Rulebook 2025 PDF

shielded from debris. The stock configuration of the fuel tank mounted to the engine is acceptable for debris management. However, if the fuel tank is to be remote mounted, a debris shield covering the exposed governor area is required. A Briggs and Stratton part number 697326 Control Cover may be u...

shielded from debris. The stock configuration of the fuel tank mounted to the engine is acceptable for debris management. However, if the fuel tank is to be remote mounted, a debris shield covering the exposed governor area is required. A Briggs and Stratton part number 697326 Control Cover may be used. Teams may also fabricate a control cover provided the part has an equivalent function to 697326. The governor spring shall be engaged with, and only with, hole five (5) per Figure B-1. The part number for Governor Spring is 264080. Figure B- 1: Governor Spring Position B.2.7.10 Idle Speed Any idle speed adjustment is allowed, Briggs and Stratton recommend 1,750 RPM ± 100 RPM. B.2.7.11 Air Cleaner The air intake cleaner may be relocated, but Briggs and Stratton parts must be used to relocate the air filter. Parts 592251 (remote kit), 695329 (choke shaft), and 699960 (base) are permitted. No previous part versions are allowed. The supplied intake air hose may be shortened to a minimum of 152 mm. No other type of hose will be allowed. A team may also add additional pre-filters to the top of the air intake. These parts must be included in the cost report. Any changes made to the air filter will have to pass inspection by Briggs and Stratton. A fresh air cleaner element and a paper filter are required during On-site Technical Inspection - Engine at the BAJA SAEINDIA® competition site. Relocation of air filters or cleaner housing may decrease engine performance. B.2.7.12 Carburetor B.2.7.12.1 Jetting Modifying the carburetor jet or re-jetting the carburetor is prohibited. Page 29 of 147|Rev00-3rd July 2024 B.2.7.12.2 Float The carburetor float is not adjustable and may not be modified. B.2.7.12.3 Venturi Modification of the carburetor venturi is prohibited. B.2.7.12.4 Exhaust System B.2.7.12.5 Muffler Relocation If the vehicle design requires an exhaust system reconfiguration to keep it from impinging on part of the vehicle, the re-routing must be done using tubing having an ID of 32 mm. Any remote-mounted exhaust system must use the original muffler and must be securely mounted so that it does not vibrate loose during the competition. B.2.7.12.6 Muffler Support Support for the exhaust pipe and muffler are required. Support must be attached exclusively to the engine. B.2.7.12.7 Exhaust Pipe Port The exhaust pipe may not protrude inside of the exhaust port, to alter the port configuration. B.2.7.12.8 Exhaust Pipe Length Any exhaust pipe length is allowed; however, pipe length may not be adjustable. B.2.7.12.9 Exhaust Pipe Continuity No extra holes or tubes are allowed in the exhaust pipe. One inlet and one outlet are required. B.2.7.12.10 Exhaust Durability The exhaust pipe and muffler must be durable, resilient, completely intact, and functional throughout the competition. Any vehicle found to have a loose or leaking exhaust system will be removed from competition until the issue can be corrected. B.2.7.12.11 Exhaust System Complete The complete exhaust system shall be located such that its extremities lie at least 100 mm within the perimeter of the vehicle. (The perimeter of the vehicle stands for the envelope formed by the planes of the roll cage members). (Refer figure B-2.1) Engines shall not be placed in a way such that the exhaust is facing towards the firewall. In case of exhaust facing the firewall, the teams should ensure the clearance between exhaust and firewall is a minimum of 100 mm after rerouting of exhaust and which will be validated by Briggs and Stratton at the main event. The team may be subjected to modifying the routing if it’s not meeting the requirements of Briggs and Stratton. Page 30 of 147|Rev00-3rd July 2024  Figure B- 2.1: Exhaust-Firewall Clearance Figure B-2.2: Exhaust-Firewall Clearance (Exhaust Facing Driver) Figure B-2.2 shows the Engine placed and exhaust facing towards the driver with a red colored pipe used for rerouting. A green arrow indicates the clearance required between the outer periphery of the exhaust rerouting pipe and RRH which should be > 100mm. B.2.7.12.12 Muffler Cage Teams are encouraged to retain the protective wire cage surrounding the muffler to reduce the risk of burns. B.2.7.13 Starting Devices The starter pull rope may be extended to accommodate the driver starting the engine while seated. Starter motors are explicitly prohibited. B.2.7.14 Alternator The engine may be fitted with an approved alternator to generate electrical power. The only alternators which are permitted are those that Briggs and Stratton specify for the engine model. Available alternators are sized in 3, 10, and 20 Ampere versions. ARTICLE B.3: ROLL CAGE B.3.1 Objective The purpose of the roll cage is to maintain a minimum space surrounding the driver. The cage must be designed and fabricated to prevent any failure of the cage’s integrity during normal operation or a collision or rollover. Teams must build a new roll cage every year, teams using roll cage from previous competitions will not be allowed for the main event. The roll cage MUST have a unique signature on the RRH member of the roll cage, refer to Figure B-3. Roll cage signature to be in the following format. TEAM ID / SEASON YEAR / CAR NUMBER (THREE DIGIT) For example, team XYZ with Team ID 25161, car number 87 participating in BAJA SAEINDIA 2025 has the roll cage signature as, 25161 / 2025 / 087 Teams may reuse TYRES, shock absorbers/fox suspension, CVT, and driver’s seat for a maximum period of three years. However, for every event, the original invoice needs to be showcased to the TEJ team at the competition site. Page 31 of 147|Rev00-3rd July 2024  Figure B- 3: Roll Cage Signature The signature on the roll cage is to be stamped using a 6 mm sized number punch. Refer to Figure B-4 for a tool that can be used for stamping. Figure B- 4: Tool to be used for Roll cage Signature. B.3.2 Roll Cage Structure The roll cage must be a space frame of tubular steel. The following section outlines the requirements of the physical members and joining methods of the roll cage. Roll cage and Frame Members must be fully welded, and welds must not be ground, sanded, or modified to prevent inspection. Roll Cage Members that are bent must not exhibit any wrinkles, kinks, or any detrimental deformation to the cross-section. The terminology used in the rule book relating to the roll cage structure is given below. Frame: The entire tubular structure including all non-cantilevered tubes. Roll Cage: Primary and Secondary Members are used to protect the driver. Member: A Primary or Secondary required element beginning and ending at Named Points. Named Point: The intersection of the centerlines of two or more joining named members. Page 32 of 147|Rev00-3rd July 2024 B.3.2.1 Member Requirements Roll cage members must be made of steel tubes and may be straight or bent. Straight members may not extend longer than 1016 mm between Named Points or comply with Rule B.3.2.4 - Additional Support Members. Bent members may not have a bend greater than 30 deg. that does not occur at a Named Point and may not extend longer than 838 mm between Named Points or comply with Rule B.3.2.4 - Additional Support Members. Small bend radii (