The second supercar built by Gordon Murray Automotive is called T.33.
In many ways, it is a T.50 made more daily usable and cheaper - well,
cheaper but by no means cheap. Although this car starts at a full
£1 million lower than the flagship T.50, it still costs
£1.37 million before tax. That's enough to buy you 4 Ferrari
SF90s. On the plus side, its production is limited to 100 cars like the
T.50. A roadster and a track-oriented derivative will follow, but the
total will still be fewer than, say, Bugatti Chiron.
The T.33 is designed according to the taste of Murray. He loves classic
sports racing cars in the 1960s, such as Alfa Romeo
Tipo 33, Ferrari
Dino 206 SP, P2 and P3. This is reflected in the
T.33's flowing waist line and uncluttered shape. The largely passive
aerodynamics also makes this pure form possible. It uses a pair of
underbody diffusers located behind the front wheels to generate
positive downforce, so it needs no massive front splitters or fins. The
only active aero aid is a retractable rear
spoiler, but it rests flush in the body when the car is stationary.
Unlike the T.50, there is no fan at its tail.
Without aggressive aero, the car might not look like a top-tier
supercar. In fact, its refined shape and a wraparound rear screen
remind me what the current mid-engined Corvette should have been, and
what an opportunity missed out by GM. The only aggressive detail on its
exterior is the roof-mounted snorkel. Obviously, this is one of the
favourite signatures of Gordon Murray, as you can see the same thing on
the original McLaren F1 as well as the T.50. However, this time the
snorkel is fixed to the engine instead of bodywork, so it moves a
little bit when the motor is under throttle.
The T.33 is a compact supercar. At 4398mm long, 1850mm wide and 1135mm
tall, it is 58mm shorter, 50mm wider and a massive 134mm lower than a
Porsche Cayman GT4, yet its 2735mm wheelbase exceeds that of the
Porsche by 251mm, something necessary to accommodate its V12 motor.
Compared with T.50, it is 46mm longer in lenght and 35mm longer in
wheelbase, but shares the same width.
While the T.50 employs a carbon-fiber tub for its chassis, the T.33
makes use of Murray's patented iStream Superlight construction, which
is
cheaper and easier to build for higher volume. It is made of tubular
aluminum frames running almost the full length of the car, reinforced
by bonded carbon-fiber panels with aluminum honeycomb cores, then
dressed in carbon-fiber bodywork.
Targetting at a kerb weight of under 1100kg, it is heavier than the
T.50, which weighs just 986kg with fluid, but still undercuts other
supercars by hundreds of kilograms.
As in T.50, the rear suspensions are mounted directly at the
transmission casing, so the powertrain acts as semi-stressed member.
Vibration is taken care by engine and transmission bushings. The
passive, all-double-wishbone suspension seems to be carried over from
the T.50, as are the Brembo ceramic brakes (370mm and 340mm, 6-pot and
4-pot front and rear) and pure road tires at modest sizes (Michelin
Pilot Sport 4S, 235/35ZR19 front, 295/30ZR20 rear). However, while the
T.50 uses an unassisted steering (electric motor engages only at low
speed), the T.33 makes do with a hydraulic steering to suit its
friendlier road manner, and hopefully without losing tactile feel.
The Cosworth-built 4-liter naturally aspirated V12 is a detuned version
of the existing unit. It produces 615 horsepower at 10,500 rpm,
compared with 663 hp at 11,500 rpm on T.50, and redlines at 11,100 rpm,
1000 rpm lower than the flagship model. It gets different cylinder
heads, intake,
exhaust and camshafts to improve drivability. Although peak torque is
down slightly from 344 to 333 pound-feet (still arrives at a sky-high
9000 rpm), its torque curve gets flatter, offering 250 lbft at 2500 rpm
(versus 244 on T.50). 90 percent of its maximum torque is available
between 4500 and 10500 rpm.
However, to get the best of it you need to work harder on the Xtrac
6-speed
manual gearbox, which comes from the T.50 but with bespoke ratios.
Buyers chasing for higher performance may opt for the same supplier's
IGS sequential paddle-shift gearbox, which is adapted from touring cars
and shared with T.50S Niki Lauda, but Murray said only 3 customers
chose it among the 50 cars or so already sold, embarrassingly.
Although the T.33 matches many supercars for power to weight
ratio, without a twin-clutch gearbox, launch control, 4-wheel drive,
turbocharged torque or electric assistance, it is unlikely to match
them in any
performance measurement, or even a Porsche 911 Turbo S. That's why
Gordon Murray declines to offer any
performance figures and stresses that pure driving thrill is the focus
of this car.
Inside the cabin, you will find one big difference from the T.50: it is
a conventional 2-seater rather than a 3-seater with central driving
position, so the driver is easier to get in and out. The cockpit
doesn't lack space, but the focus is on driving. The seats are thinnly
padded carbon-fiber buckets. The steering wheel has no fancy
touch-sensitve buttons. There is no touchscreen either, though you can
pair it to your smartphone with CarPlay or Android Auto. Behind the
no-nonsense steering wheel is a conventional anaologue tachometer,
flanked by 2 small screens and 3 physical switches at either sides.
More switches and rotary control can be found on the floating center
console, where a classical stick shift with globe knob is
located. There is absolutely no space behind the seats to store your
belongings, but the car offers 3 luggage compartments, one at the nose
and
2 at the sides just fore of the rear wheels.
The T.33 is certainly not as spectacular as the T.50. In some ways, it
seems a bit overpriced for the ingredients or performance it offers.
However, being the very last analogue combustion supercar on the market
- Murray said his next new car will go electrified inevitably - the
thrills it offers could be priceless. The fact that it is easier to
live with than the T.50 should make such thrills more accessible.
Prototype testing will start in June this year, and first delivery is
set
at early 2024.