2008
sees the introduction of RML's latest sports prototype contender,
the MG Lola EX265.
A
direct development of the team's Le Mans-winning LMP2 EX264,
the extent of further work carried out on the chassis during
the course of the Winter of 2007-8, particularly with regard
to the engine, warranted full re-homologation of the MG.
The result was the announcement in January 2008 of the arrival
of RML's newest LMP2 prototype, the MG Lola EX265 (see news
item here).
Outwardly,
there are few distinguishing features to mark the EX265
as significantly different from its predecessor, but under
the skin a whole raft of work has been carried out to hone
this already very successful chassis, and ensure that RML's
Mike Newton and Thomas Erdos can continue to compete at
the highest levels in sportscar racing. As holders of the
2007 LMP2 Le Mans Series title, and twice winners of the
Le Mans 24 Hours, they have a reputation to uphold, and
the EX265 is the chassis that will enable them to maintain
their competitive edge.
The
major advance lies within the two-litre turbocharged engine.
Based upon AER's well-proven PO7 engine, the EX265 is powered
by the newly designated XP-21 unit. This revives the original
association between MG, Lola and AER that began with the
MG EX257 in 2001, when the works cars at Le Mans were powered
by the AER-derived XP-20. In addition, collaboration between
RML and chassis developers Lola has achieved further advances
in handling, aerodynamics and overall performance of the
car, allowing the EX265 to make full use of the improved
characteristics of the XP-21 engine.

The
EX265 is the latest in a long line of technologically advanced
and aesthetically pleasing racecars to emerge from the Lola
factory in Huntingdon. Over 8000 hours of CAD development
work went into the design of the original EX264, while some
260 hours were spent in the windtunnel to perfect the car's
aerodynamics.
In
its original configuration, as raced in 2005, the EX264
was initially developed in association with MG, RML and
engine specialists Judd. Based on the Lola B05/40, itself
a comprehensive redevelopment of the successful MG EX257
sports prototype, the EX264 was immediately eligible for
the ACO LMP2 class at Le Mans as well as the Le Mans
Endurance Series (now Le Mans Series) and
the American Le Mans Series. In its latest incarnation,
the MG EX265 complies with all the latest regulations and
technical specifications.
Although
visually similar to other Lola chassis,
RML's family of racecars is correctly designated as MG -
be that last season's EX264, or the current EX265. (Not,
as has been contrived by some, an "MGola", which
seems a cumbersome name for such a svelte and nimble car!).
Under the skin it features many significant differences
that stand it apart from its Lola, Mazda or Acura -badged
counterparts. Many of these stem from the way RML continued
development of the previous MG EX257 after acquiring the
ex-factory racecars and campaigning those in 2003 and 2004.
Much of that on-going development was too valuable to be
lost when the B05/40 chassis was released, and with the
blessings of both Lola and MG (at that time still in operation),
many of those innovations were carried over to the new car.
Several months before the demise of MG Rover as a British
company, the new RML racecar was fully homologated as the
MG EX264. Now, with the revival of the MG brand, and closer
ties between RML AD Group and the MG parent company, Shanghai
Automotive in China, the RML sports prototype proudly carries
the MG octagon to this day.
The
chassis is an all-carbon fibre monocoque, with symmetrical
twin rollover hoops. This is encased within a stunningly
good-looking bodyshell constructed from pre-preg carbon
fibre with a honeycomb core for additional rigidity. This
meets the revised aerodynamic requirements introduced during
2004 and means that the EX265 is likely to remain at the
forefront of prototype racecar technology for some time
to come. The rear wing and underbody are also of lightweight
carbon composite construction.
The
front and rear suspension uprights are fabricated from aircraft
specification steel and TIG welded. These elements link
via double fabricated steel wishbones with pushrods and
rockers to three-way adjustable damper units.
In
2005 the car raced with a specially-developed MG V8 powerplant,
created exclusively for the EX264 by Judd. Normally aspirated,
this unit took the car to a class win at Le Mans in June
2005 and proved both reliable and strong, rarely missing
a beat all season. Having enjoyed fantastic support from
Judd all year, it was not an easy decision to take when
the team found it necessary to change engines for 2006,
reverting to the turbocharged AER 2-litre engine that had
previously powered the team's EX257s. Not only did RML already
have several of these engines "in stock", but
over the previous two seasons the AER unit had proven itself
exceptionally reliable, fuel efficient and responsive. It
made sense, both financially and in terms of race strategy,
to make the change. As was subsequently demonstrated by
a second consecutive class victory in the Le Mans 24 Hours
of June 2006, the change proved to be a wise one.
Now
replaced again, this time by the AER-developed XP-21, the
car's engine is mated to a Lola six-speed sequential gearbox
with semi-automatic paddle shift system. A back-up manual
gear-change system is also installed. When first introduced,
this back-up required that a driver with paddle-shift problems
made a 40 second pitstop to initiate the changeover. However,
the latest refinement merely demands a very brief moment
of free-wheeling in order to affect the switch, so the car
does not even have to stop. Two starter motors and paired
alternators are fitted for reliability, lightweight magnesium
castings are employed extensively throughout the car, and
braking is by 355 mm diameter carbon discs.
In
2007 Lola introduced the revised B07 chassis, and made available
an updated aerodynamic kit for the earlier B05 and B06 chassis.
RML carried out extensive testing and back-to-back simulations
on these configurations, and in 2007 employed both variants,
favouring new "07" body kit at high downforce
circuits but remaining faithful to the "06" kit
for the lowest downforce tracks. During the 2007-8 "closed
season" the team carried out further dynamic testing
on both the body and chassis of the EX265 and has now achieved
significant improvements in handling and performance.
The
EX265 is fitted with a fully-integrated computerised dash/data
logger system with steering-wheel mounted display, The military-specification
wiring loom is installed directly to the inside of the monocoque
for protection, access and reliability. The car also carries
examples of AD Group's latest technology in video monitoring
and on-board camera equipment, allowing team and drivers
alike to review and assess all aspects of the car's on-track
performance.
 |
| Engine |
MG AER XP-21 2.0 litre turbocharged 4-cylinder
|
| Power |
Approximately
500bhp through 1 x 42mm restrictor |
| Top
speed |
In
excess of 200mph |
| Gearbox |
6-speed
semi-automatic sequential via paddle-shift |
| Clutch |
Carbon,
pull type |
| Cooling |
Aluminium
water radiators and oil coolers |
| Chassis |
One
piece carbon fibre monocoque |
| Steering |
Power
assisted rack-and-pinion |
| Suspension |
Fabricated
steel double wishbones |
| Brakes |
355mm
x 32mm front and rear, Carbon fibre discs, carbon
fibre pads |
| Wheels |
Forged
Magnesium Fronts 18"x12.5J, Rears 18"x13J |
| Tyres |
Michelin.
Fronts 300/650-18, Rears 310/710-18 |
| Dimensions |
Length,
4534mm; Width, 1990mm; Wheelbase, 2790mm |
| Weight |
Minimum 825 kgs |
| Capacities |
Fuel,
80 litres, Oil (dry sump) 10 litres |
|
These
specifications are subject to change and were correct as
of April 2008