Bulletin Number: B15/006 Implementation Date: 26/03/2015 TECHNICAL BULLETIN 1 st CATEGORY RACING CARS FORMULA VEE TECHNICAL REGULATIONS REFERENCE: http://docs.cams.com.au/manual/race/ra14-formula-vee-2015-1.pdf RATIONALE: To clarify the Formula Vee Technical Regulations ACTION: To amend the Formula Vee Technical Regulations as follows: PREAMBLE For Formula Vee s Log Booked after July 2014; in addition to being issued with a CAMS log book, to become eligible for competition, the a Formula Vee shall must be issued with a Certificate of Compliance from a State Formula Vee Association. 2.6 ENGINE: (v) Crankshaft:... The crankshaft may be ground and the case may be machined to accommodate the use of the standard VW oversize/undersize crankshaft bearings, provided the crankshaft location is not changed. It may also be machined to permit installation of camshaft bearings. Lightening of the crankshaft is permitted. Metal removed shall must be confined to the circumference surface of the crankshaft webs.
(vii) Flywheel and clutch assembly: For 1200cc engines machining of all flywheel surfaces is permitted. The flywheel shallmust comply with the minimum weight specified in art. 3, Weights and Dimensions. The use of any flywheel, as used on a Type1 or Type 3 VW originally fitted with a six volt or 12 volt electrical system, is permitted: For 1600cc engines lightening of the flywheel is permitted by machining of the clutch plate and pressure plate contact surfaces and the back face only. The lightened flywheel shall respect the dimensions in the diagram below: (ix) Camshaft followers: Machining of the camshaft contact face only of the camshaft followers is permitted. Modified contact face must not be concave. Camshaft followers may have a single centralised lubrication hole of a maximum 1mm diameter as supplied by the manufacturer. (x) Cylinders, Pistons, Rings and Gudgeon Pins: Removal of metal from pistons and gudgeon pins for balancing purposes is permitted. Metal removal must be confined to the inner surfaces of the piston so that the skirt perimeter is not modified in any way; For 1200cc engines each piston and gudgeon pin may be lightened but shall comply with the minimum weight specified in article 3, Weights and Dimensions. Metal removal shall be confined to the inner surfaces of the piston only. that the skirt perimeter is not modified in any way. A piston ring
functioning in the normal manner shall be fitted in each groove of the piston. Each piston and barrel shall comply with the requirements of Non Genuine Parts, except that: (a) The minimum width of the top and second ring groove shall be 2.00mm. (b) The minimum width of the oil ring groove shall be 4.00mm. (c) The minimum distance from the top of the gudgeon pin bore to the face of the piston shall be 27.90mm. For 1600cc engines pistons and gudgeon pins may be lightened. Pistons shall be cast aluminium alloy with a steel insert and the profile of the bottom of the piston skirt shall be as manufactured. Piston and gudgeon pin shall comply with the minimum weight and dimensions specified in art. 3, Weights and Dimensions. A piston ring, functioning in the normal manner, shall be fitted in each groove of the piston. Each piston gudgeon pin circlip can be replaced by a Teflon button. Each Piston shall meet the requirements of Non Genuine Parts except that they do not require the cast in steel plate. Machining the spigot faces of barrels to obtain deck height is permitted. (xii) Valve Train: For 1600 and 1200 engines Valves shallmust conform with Articles 1.1, 3 and 4 with the exception that they may be manufactured from any ferrous material 2.7 ENGINE ANCILLARIES: (i) Carburettor: For 1200cc engines:.. (f) The throttle shaft is not to be modified. The minimum thickness of the throttle shaft is 4.7mm. (iii) Inlet Manifold: (b) The aircleaner shall have a horizontal interior surface located no higher than 10mm above the uppermost edge of the carburettor air inlet. The interior of the air cleaner, to a minimum diameter of 70mm and maximum of 150mm centred on the carburettor air inlet and to a minimum height of 40mm and maximum of 80mm above the horizontal surface, shall be free space. The use of any aircleaner which is less than the specified envelope is permitted. The aircleaner shall have a horizontal interior surface located at the uppermost edge of the carburettor air inlet.
(vi) Cooling System: (c) Modification of the fan housing is permitted in order to provide for an airtight passage for any member of the safety cage structure and an orifice (to the specified dimensions) for external oil cooler hoses. Each bracket is permitted to be fixed to the fan housing so long as its attachment forms an airtight seal. (d) It is permitted to attach brackets directly to the fan housing provided that the bracket attachment forms an airtight seal. (vii) Distributor: (a) The distributor is free provided it retains the original drive and location and mechanical high tension current distribution. Each standard Bosch or replica point may be replaced with an electronic replacement point set ignition module. The replacement set ignition module shall be installed totally within the distributor without requiring any modification to the distributor. When a replacement point ignition module is installed it shall provide a fixed dwell angle at all engine RPM. A list of part numbers currently approved by the FVAA National Technical Committee will be available on the FVAA website. (b) The advance curve is free 2.8 TRANSMISSION: (a) For 1200 engines the use of any standard VW Type 1, 2 or 3 component which can be fitted without modification to itself or any other component is permitted. Any of the following standard VW gear ratios is permitted: 2.9 CHASSIS AND SAFETY CAGE STRUCTURES: (b) Configuration: (vi) The main roll bar shall be located immediately behind the cockpit with the plane of the main hoop within +/- 10 of perpendicular to the longitudinal centreline of the vehicle. With the driver seated in the normal position the hoop shall: 3.3 ENGINE: (i) Crankcase: Cam follower bore face to crankcase joint face: 31mm maximum
(ii) Flywheel weight: 1200cc engine: 5.4kg minimum 1600cc engine: - With either 113 105 101E, 311 105 101E, 311 105 101F or 040 105 101.5.Crankshafts: 7.0kg minimum - With an Aftermarket Counter Weighted Crankshaft: 5.4kg minimum Clutch pressure plate weight: - 1200cc engine: 2.5kg minimum - 1600cc engine: 3.25kg minimum (iv) Pistons/Cylinders/Connecting Rods: Cylinder bore: 1200cc engine: 77.21mm maximum 1600cc engine: 85.70mm maximum Piston top to cylinder seal face: 1200cc engine: 1.0mm minimum Refer to table below 1600cc engine: 1.0mm minimum Refer to table below (v) Cylinder Head: 1200cc engine Intake port diameter at flange face: 29.0mm maximum Exhaust port diameter at flange face: 33.0mm maximum Combustion chamber volume: 38cc minimum Valve guide length: 62.5mm ± 2.5mm Cylinder head secondary cut OD: 77.0 ± 0.5mm Cylinder head secondary cut depth: 1.5mm Outside diameter of inlet and exhaust port inserts: Inlet: 36.5mm Exhaust: 33.5mm 3.4 ENGINE ANCILLARIES: (i) Carburettor: 1200cc engine Venturi Dimensions: OD: Length: Maximum Diameter of Base of Carburettor throttle body taken in any given direction: 1600cc engine: As Standard 27.8 ± 0.5mm 26.0 ± 0.5mm 28.1mm
5. AUTHORISED PARTS The following parts can be from any source, provided their use does not result in the unauthorised modification of any other component: a threaded fasteners (but not wheel mounting bolts) h ignition coil o starter motor b brake lines i 6v or 12v batteries p swivel foot valve adjusters c fuel lines j shock absorbers q disc brake calipers d spark plugs k fuel filters r disc rotor/hub assemblies e master cylinders l ignition s fan belt points f carburettor jets m washers t distributor and venturi (1200 only) g push rod tubes n piston rings u valve push rods v External Oil Coolers and Oil Cooling Fans Y w Flywheel x Aftermarket Counter Weighted Crankshaft Ignition Modules: Compufire: part no. 21100 Pertronix Ignitor I (not II or III) part no s: 1847A, D500706 & D500709 A list of part numbers currently approved by the FVAA National Technical Committee is available on the FVAA website. END