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Mc laren MP4/28- new simpler front wing before Melbourne


   The new one has a flat main profile

The new one has a flat main profile

   Mc Laren discarded the wavy front wing in second Barcelona test, adopting a simpler new one in an attempt to decrease front end pitch sensitivity and help mechanics to understand and overcome the by birth stubbornness of MP4/28 to set up ideally .

Mc Laren MP4/28 – winter testing (pre season) tech summary


Mc Laren MP4/28 SV Jerez Feb 15 F

Chassis :  MP4/28

Engine : Mercedes-Benz FO 108F

 

      The most striking differences between the new  MP4/28 and its ancestor is the higher nose, redesigned radiators inlets ,and the pull rod front suspension ( the MP4/27 had push rod) . However special treatment on detail was taken all over the car . Worth’s mentioning that Mc Laren housed the driveshaft inside the lower wishbone of the rear suspension system to cut drag . This tactic is not new for Mc Laren because back in 1999 the MP4/14 had its steering wheel merged inside the upper wishbone of the front suspension .

 Winter testing updates :

  During winter testing the car showed remarkable speed but also was proved recalcitrant for mechanics to find the ideal set up . Since launch the car inherited three versions of nose vanes in total , horizontal, a slat on top of the sidepod and a new simpler front wing .

 

 

EVALUATION :

Aerodynamic performance :  promising but very difficult to find the ideal set up

Speed :. Speed is there but not yet unleashed . Understeer is an unsolved yet problem probably because of the introduction of a pull rod front suspension

Tyres management  :   well but suffers degradation

Reliability  :  pretty good

 

 

 

Mc Laren MP4/28 SF Launch 1 F

pull rod front suspension

 

 

2013 F1 cars – Nose Fairing patterns

February 19, 2013 1 comment

 

        Despite the fact that FIA attempted to discourage teams from exploiting the nose fairing and gaining aero advantage over it, many teams bypassed the regulations spirit and developed elegant structures both to gain  improved airflow over the nose and keep the weight penalty due to the added fairing as low as possible . To be honest this was something more than expected as many changes caused the opposite effect than the wanted    one, with the recent ban of the blown diffuser to be the best example. The only team which does not need a fairing is Marussia because of its low chassis .

       Ferrari, Mc Laren, Force India, Williams and Toro Rosso followed a conservative pattern as shown in the illustration below

Ferrari , Mc Laren , Force India , Toro RossoA full cover from stepped point to the nose tip , highlighted in orange color .

Ferrari , Mc Laren , Force India, Williams , Toro Rosso
A full cover from stepped point to the nose tip , highlighted in orange color .

 

         Sauber developed a unique “ Π ” shaped fairing to create a deep channel on top of  the nose, separating the air stream flowing over the nose with the one flowing at sides .

Sauber - Π concept

Sauber – Π concept

 

   Red Bull’s dwarf fairing is an outcome of the desire to limit the fairing dimensions to the minimum required for opted aero efficiency so as to keep the extra weight as low as possible .

Red Bull - dwarf fairing

Red Bull – dwarf fairing

 

    Mercedes evolved further last season arched nose . Instead of being flat at the top it has an intense arched shape and a more smooth  bulkhead height  transition . This is to reduce drag by diverting the air flowing above the nose tip towards the  nose sides while the main flow is channeled smoothly over the bulkhead  , all aiming lower drag production . The optical result of this pattern resembles to a duck nose .

Mercedes - duck fairing

Mercedes – duck fairing

 

 

       Finally Caterham and  Lotus  rejected the possibility of fixing a weight costly fairing and instead developed a sculpted chassis on top, thus forming a smoother airpath for drag cut . However Caterham features a deeper and a more obvious sculpted area than Lotus does .

Caterham and Lotus - sculpted chassis

Caterham and Lotus – sculpted chassis

 

 

        It is of high possibility to see teams developing further their initial idea or even coping rivals patterns . It is good to remember that the nose fairing,  as all new designs, needs to be examined and studied further , unless FIA decides to make regulations even stricter .

 

 

Mc Laren MP4/28 – Technical Specifications


 

Chassis
Monocoque McLaren-moulded carbonfibre composite incorporating front and side impact structures, and survival cell
Front suspension Inboard torsion bar/damper system operated by pullrod and bell crank with a double wishbone arrangement
Rear suspension Inboard torsion bar/damper system operated by pullrod and bell crank with a double wishbone arrangement
Electronics McLaren Electronic Systems. Including chassis control, engine control, data acquisition, dashboard, alternator, sensors, data analysis and telemetry.
Bodywork Carbon-fibre composite. Including engine cover, sidepods, floor, nose, front wing and rear wing. Driver-operated drag reduction system
Lubricants & Fluids Mobilith SHC™ 1500 Grease – lubricates the four tripod joints on the drive-shafts resisting the high temperatures generated by the exhaust and braking systems
Mobilith SHC™ 220 Grease – minimises rolling resistance in the car’s ceramic wheel bearings to help maximise speed.
Mobil SHC™ Hydraulic Oil – running at over 200 bar and 100° C this fluid is an essential part of the hydraulic system which controls gear shift, the throttles and operation of DRS and steering systems
Tyres Pirelli P Zero
Radio Kenwood
Race wheels Enkei
Brake calipers Akebono
Master cylinders Akebono
Batteries GS Yuasa Corporation
Steering McLaren power-assisted
Instruments McLaren Electronic Systems
Paint solutions AkzoNobel Car Refinishes using Sikkens products
Engine
Type Mercedes-Benz FO 108F
Capacity 2.4 litres
Cylinders 8
Maximum rpm 18,000
Bank angle 90°
Piston bore maximum 98mm
Number of valves 32
Fuel ExxonMobil High Performance Unleaded (5.75% bio fuel)
Spark plugs NGK Formula 1 specification racing spark plugs
Lubricants Mobil 1™ Engine Oil – for long engine life, protection and cooling combined with improved fuel economy
Weight 95kg (minimum FIA regulation weight)
KERS Hybrid
Type Mercedes-Benz
e-Motor Engine-mounted electrical motor/generator
ESS Integrated energy storage cells and power electronics
Power 60 kW
Transmission
Gearbox McLaren-moulded carbon-fibre composite
Integral rear impact structure
Gears Seven forward and one reverse
Gear selection McLaren seamless shift, hand-operated
Clutch Carbon/carbon, hand-operated
Lubricants Mobil 1 SHC™ Gear Oil –  provides reduced fluid traction losses improving gearbox efficiency and delivering more power to the rear wheels

 

 

 

 

 

source : Vodafone McLaren Mercedes

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