Praga R1

Praga R1
A fabricante tcheca Praga Cars revela detalhes e imagens do R1, carro feito exclusivamente para as pistas. O veículo possui apenas 590 kg de peso, um motor Renaultsport 2.0 de quatro cilindros, que produz 210 CV a 7.500 RPM, transmissão Hewland JFR de seis marchas com controle pneumático, e diferencial auto-blocante.

O Praga R1 possui 4,17 metros de comprimento, 1,8 metros de largura e 99,5 cm de altura. O monocoque é de fibra de carbono, possui partes deformáveis em caso de acidente, e equipamentos de segurança específicos para competições, como um tanque de combustível especial, sistema de extinção de incêndio e cinto de segurança de seis pontos.

Outros componentes do carro incluem amortecedores Koni, embreagem AP Racing e um sistema de gerenciamento eletrônico MoTeC. Todas as unidades serão feitas artesanalmente na República Tcheca, ao preço de 98 mil euros cada uma.



Praga R1 - affordable racing dream come true

2013 Praga R1 highlights:

affordable two seater (low running costs, high reliability)
ultra light (only 590 kg, 1300 lbs dry weight)
210 HP base model (3,58 kg/kW, 356 HP per tone)
production started in November 2012

New ideas tend to come from unexpected sources. Here is one that just stands out not only in the world of racing. From an unlikely place comes unbelievably beautiful and functional racing car ready to be driven on public roads if required. Praga R1 is ultra-light compact track car that is set to rewrite motorsport books in its most basic rule - cost/performance ratio. Above all genuine design solutions stands its purpose - to provide top track performance and
unprecedented reliability for reasonable price and low running cost. Praga R1 is here to be driven hard and not to spend owner's money and time in the garage.

Might be surprising, but R1 is by far not the first racing car from Praga Cars LTD company. In past three years, small yet strenuous team have created two other cars that made huge impression within the greatest circuits in the world. Small Attack R4 and later Praga R4S managed to scoop several race victories and podium results in 2010-2012 on circuits like Assen, Zolder, Monza, Donington and SPA Francorchamps. Competing against "heavyweight" racing legends like Corvette, Ferrari, Porsche, Mosler and Viper proved right Praga’s new concept and approach. They are the same for all Praga cars - low weight, agility and functional aerodynamics rather than brute power and big engine.

R1 is third race car hand built by the same team, completely from the ground up. Previous models (both still in production) found many satisfied owners over the last years. This newest one beautifully shows creator's competence and deep understanding of design, aerodynamics and construction. Praga R1 is a masterpiece which grabs attention only by looking at its shape and proportions.

As lightweight as it can be, two seater Praga R1 is 4170 mm long, 1800 mm wide, only 995 mm tall with only 590 kilograms dry weight (1300 lbs). Yet pilots of Praga R1 get unprecedented level of passive safety and comfort. Closed cockpit provides safer and more convenient place for pilot and his passenger. Especially in wet and cold conditions. Carbon fibre monocoque reinforced by internal ribs and bulkheads, carbon fibre crumple zones for frond and side crash
energy absorption, 6-point seatbelts, integrated fire extinguisher system, polycarbonate windows and safety fuel tank make it one of the safest racing cars.

Base model uses naturally aspirated 2-litre 4-cylinder engine F4R 832 from Renault Sports Technologies with maximum 155 kW (210 PS) at 7500 rpm. This gives promising power to weight ratio of only 3,8 kg/kW (356 HP per tone). Located longitudinally almost exactly in the middle of the car together with specially prepared Hewland JFR 6-speed sequential transmission operated automatically via KMP pneumatic paddle shifting system gives the car extremely low
centre of gravity and also little polar moment of inertia. Both these are essential for great handling, dynamics and overall performance. During October 2012, first prototype was hard tested on Praga Cars home racetrack Slovakia Ring near Bratislava, Slovak Republic. Thought through balance between beautiful shape and aerodynamics efficiency gives Praga R1 significant downforce which in return means higher cornering speeds and stability.

Praga Cars wants to offer the best, that is why R1 uses only the finest components from world renowned manufacturers such as AP racing brakes, Hewland transmission, Sachs racing clutch, KMP pneumatic paddle shifting, Renault Sport Engine, Cosworth ECU, ATL fuel tank, Koni dampers, OMP fire extinguisher system and many more.

Praga R1 is here to open the door into professional motorsport for those who prefer best price/performance ratio. Modern, sophisticated with cutting edge technologies, trouble free spare parts availability and low running cost. For 2013 season already Praga Cars is preparing first R1 cars to run it´s own Praga Cup series on professional European circuits.

PRAGA R1 Technical specification

General specification
Made in EU
Produced in 2013

Characteristics
Basic description Single-seater race car (two seater optional), carbon fibre monocoque
Weight (dry) 592 Kg
Dimensions (H x L x W) 965 x 4144 x 1800 mm
Wheel base 2527 mm
Wheels and tyres front Praga, centre locking 15 x 8, with 200/580R15 Dunlop racing tyre
rear Praga, centre locking 16 x 10.5, with 265/605R16 Dunlop racing tyre

Body and Interior
Construction Light weight and compact, longitudinal mid engine layout
Crashbox Front, rear and carbon fibre honeycombed crashbox complying with FIA Production
Sports Car Crash Test
Body panels Quick-release lightweight fibreglass body panels reinforced with carbon and Kevlar
Rear wing Low-drag fine adjustable bi-plane rear wing (carbon fibre optional)
Doors Carbon fibre driver and passenger doors
Windows Custom made lightweight polycarbonate windows with anti-scratch protection
Fuel tank 60 litre foam-filled FIA approved ATL fuel tank located behind the seat (ATL dual quick
fill valve – optional)
Pedals & Steering wheel Adjustable pedals and 2-way adjustable quick release Cosworth steering wheel with
display and rotary switches
Seat Custom made Praga carbon Kevlar racing seat with side head rest
Seat belts FIA approved SCHROTH 6 point seat-belts for use with HANS
Communication system Built-in PELTOR / YAESU radio communication system (optional)
Suspensions Fully adjustable front and rear suspensions
− KONI 2-way adjustable, mono-tube, easy to adjust
− unequal length upper and lower wishbones
− CNC aluminum machined adjustable uprights
− forged steel centre lock hubs
− adjustable anti-roll bars
− custom made progressive racing coil springs
Fire extinguisher system Mechanically / Electrically-activated fire extinguisher system in engine bay (optional)
Lighting Rear lights including rain light and turn lights, (front lights optional)

Drivetrain
Engine Renault Sport Formula 2010 2.0 engine
Dampers Unique Praga compact bellhousing with dampers
Braking system AP Racing brakes with 4-piston calipers
Clutch Lightweight steel flywheel / competition twin plate ZF Sachs Racing clutch
Gearbox custom made HEWLAND JFR - six-speed sequential semi-automatic transaxle
gearbox, interchangeable gear sets
Shifting Pneumatic KMP paddleshift system with flat shifts and auto blip
Engine management ECU Cosworth / Pectel SQ6 with close loop lambda system, pit limiter speed control,
traction control and full sequential shifting

Engine
Configuration F4R 832
Cylinder / Valves 4 / 16
Location Mid, longitudinally mounted
Bore / Stroke 82.7 x 93 mm
3
Displacement 1998 cm
Engine Life 10 000 Km before rebuild
Engine Control System Cosworth / Pectel
Engine Loom Military specification wiring loom
Rev Limit 7500RPM
Power 210bhp @ 7250 RPM
Torque 220Nm @ 4500 RPM

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