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Moto2 : The full technical regulations
As released by the FIM
Following a meeting of the Grand Prix Commission, - composed of Messrs. Carmelo Ezpeleta (Dorna Chairman), Claude Danis (FIM), Hervé Poncharal (IRTA) and Takanao Tsubouchi (MSMA), in the presence of M. Paul Butler (Secretary of the meeting) – the FIM
released on Thursday the replacement regulations for 250cc class as from 2011.

Technical Regulations:

1. Engine
1.1 4-stroke engines only.
1.2 Engine capacity: maximum 600cc.
1.3 4 cylinders maximum.
1.4 No oval pistons.
1.5 Engines must be normally aspirated. No turbo-charging, no super-charging.
1.6 Engine speed limited to maximum: 16,000 rpm. 4-cylinder engines / 15,500 rpm. 3-cylinder engines / 15,000 rpm. 2-cylinder engines
An electronic system supplied by the Organisers will be permanently attached to monitor and control engine speed.
1.7 Pneumatic valve operation is not permitted.
1.8 Inlet and Exhaust valves must be of conventional type (reciprocating poppet valves).
1.9 Variable valve timing or variable valve lift systems are not permitted.
1.10 Only wet-sump type engine lubrication systems are permitted.
1.11 Minimum weight of complete engine with throttle body, dry: 53 kg 4-cylinder / 50 kg 3-cylinder / 47 kg 2 cylinder

2. Inlet & Fuel System
2.1 Variable-length inlet tract systems are not permitted.
2.2 Only one throttle control valve per cylinder is permitted. No other moving devices are permitted in the inlet tract before the engine intake valve.
2.3 Throttle bodies will have a maximum internal diameter (must be perfectly circle except for the area of dent or groove to allow the injector to come out) at engine side out-let of: 42 mm for 4-cylinder / 48 mm for 3-cylinder / 59 mm for 2-cylinder
2.4 Fuel injectors will be restricted to a defined type (tba, based on cost).
2.5 Fuel pressure must not exceed 5.0 bar.
2.6 No artificial cooling of intake air or fuel.
2.7 Only air or air/fuel mixture is permitted in the induction tract and combustion chamber.
2.8 No direct fuel injection into the cylinder/head/combustion chamber.
2.9 Fuel specification will be for standard unleaded fuel (commercially available EU-compliant “pump fuel”).

3. Exhaust system
3.1 Variable length exhaust systems are not permitted.
3.2 Noise limit will be a maximum of 120 dB/A, measured in a static test.

4. Transmission
4.1 A maximum of 6 gearbox speeds is permitted.
4.2 A maximum of 3 alternate gear ratios for each gearbox speed, and 2 alternate ratios for the primary drive gear is permitted. Teams will be required to declare the gearbox ratios for each gear used at the beginning of the season.
4.
3 Electro-mechanical or electro-hydraulic clutch actuating systems are not permitted.

5. Ignition, Electronics & Data-Logging
5.1 Data logger system will be supplied by the series Organizer.
5.2 Only the ECU/fuel injection control units supplied by the series Organiser are allowed to be fitted to the motorcycle. Electronic control units include the timing transponder, engine RPM control, and datalogger systems. No other electronic control or datalogging systems will be allowed on the motorcycle.
The price of ECU unit made by each engine manufacturer must be equal to or less than JPY75,000 (about Euro650).

6. Chassis
6.1 Chassis will be a prototype, the design and construction of which is free within the constraints of the FIM Grand Prix Technical Regulations. The frame, swing-arm, fuel tank, seat and cowling are forbidden to use from a non-prototype as series production road-going motorcycle.

6.2 Minimum Total Weight: 135kg for 4-cylinder / 130kg for 3-cylinder / 125kg for 2-cylinder
6.3 No carbon brake discs.

7. Wheels & Tyres
7.1 No carbon composite wheels.
7.2 The maximum permitted wheel rim width is: Front 4.00” / Rear 6.00” or 6.25”
7.3 The only permitted wheel rim diameter is: Front 17” / Rear 17”
7.4 The number of slick tyres allocated to each rider per event will be controlled.

8. Materials & Construction
8.1 Construction materials will be limited to exclude expensive “non-conventional” materials and manufacturing methods (a list will be issued).
8.2 The following components must be made from iron-based alloys: Valve springs, camshafts, crankshafts, connecting rods, piston pins, brake discs.
8.3 Engine crankcases and cylinder heads must be made from cast aluminium alloys.
8.4 Pistons must be made from an aluminium alloy.

9. General
9.1 Number of machines: the team can scrutineer only one motorcycle per rider.
9.2 Number of engines: a maximum of 2 complete engines per rider is permitted at any event. Teams will be required to register engine serial numbers at Technical Control on the day before the first practice.
9.3 Apart from the above regulations, all other construction criteria, dimensions and specifications are as per the FIM Grand Prix Regulations.
9.4 The engine (excluding exhaust, throttle bodies and ECU) used in a race is available to be purchased by another competitor in the same race for a fixed price of €20,000 (Euro). Such purchase request must be made in writing to Race Direction within the protest period, that is within 60 minutes after the official end of the race. The transaction and delivery will be completed immediately at the end of the 60 minute protest period and will be underwritten by IRTA. Teams refusing to sell when presented with a valid request will be disqualified.



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