Toyota TF105B

As a part of the continuous development programme at Toyota, the team introduced the TF105B, an evolution of the TF105 that ran all the 2005 Grand Prix, except the for the last two, at Japan and China. This car was the basis for winter testing and introduced a zero-keel front suspension, contrary to the single keel layout of the TF105. The new suspension has mainly areadynamic advantages as the air under the nose is allowed a cleaner flow. The same suspension type was carried over to the TF106 that debuted at the end of november 2005. It was however not until the Toyota TF106B that the keel would be removed and make full advantage of the single keel setup.

TF105 Vs TF105B
1. Previous keel mount of the suspension
2. New mounting point on the chassis
3. Previous location of steering column
4. New positioning of steering column
5. Previous arrangement of guiding vanes
6. New arrangement of guiding vanes

More on the evolution of the TF105 towards this car can be found at http://www.f1technical.net/features/1247

Specifications

Technical specifications are identical to those of the TF105:

Monocoque construction: Moulded carbon fibre and honeycomb construction
Fuel tank: ATL safety cell
Front suspension: Carbon fibre double wishbone arrangement, with carbon fibre trackrod and pushrod Pushrod activates rocker, torsion bar, damper and anti roll bar assy
Rear suspension: Carbon fibre double wishbone arrangement, with carbon fibre toelink and pushrod Pushrod activates rocker, torsion bar, damper and anti roll bar assy
Dampers: Sachs/Toyota
Wheels: BBS forged magnesium
Tyres: Michelin
Brakes callipers: Brembo
Brakes master cylinders: Brembo
Braking material: Hitco (carbon/carbon)
Steering: Toyota power-assisted steering
Steering wheel display: Toyota carbon fibre wheel with Toyota/Magneti Marelli instrument
Driver seat: Carbon fibre construction, moulded to driver's shape
Driver restraints: Sparco
Driver HANS device: Toyota design
Electronic systems: Toyota/Magneti Marelli
Transmission: 7-speed unit plus reverse. Toyota-designed maincase with Toyota/Xtrac internals. Gear selection is sequential, via driver controlled electro-hydraulic actuation
Dimensions

• Wheelbase: 3,090mm
• Overall length: 4,530mm
• Overall height: 950mm
• Overall width: 1,800mm
• Overall weight: 600kg including driver and camera

Engine designation: RVX-05
Cylinders:90° V10
Capacity: 2998cc
Horsepower: More than 900bhp (estimated around 940bhp)
Revolutions: Approximately 19,000rpm
Valve actuation: Pneumatic
Throttle actuation: Hydraulic
Spark Plugs: DENSO
Fuel: Esso
Lubricants: Esso