Rotax, four stoke, single
cylinder, DOHC, 4 valves per cylinder
Capacity
652 cc / 39.79 cu-in
Bore x Stroke
100 x 83 mm
Cooling System
Liquid cooled
Compression Ratio
9.7;1
Lubrication
Dry sump
Exhaust
Stainless steel catalytic exhaust system (CR and S by QD)
Induction
Injection. Integrated CR and S/Walbro/Dell’Orto
ignition/injection system, 52 mm throttle housing, twin injectors, twin
spark
Ignition
Marelli integrated electronic, twin spark
Starting
Electric
Max Power
54 hp / 40 kW @ 7000 rpm
Max Torque
6 kgf-m / 58.9 Nm @ 5000 rpm
Clutch
Wet multiplate
Transmission
5 Speed
Final Drive
With “O” ring chain
Frame
Steel tubes and machined light alloy plates compound
Front Suspension
46mm Telescopic forks
Front Wheel Travel
120 mm / 4.7 in
Rear Suspension
Oscillating swingarm, single shock absorber
Rear Wheel Travel
128 mm / 5.0 in
Front Brakes
Single 320mm disc
Rear Brakes
Single 220mm disc
Front Tyre
120/70 ZR17
Rear Tyre
160/60 ZR-17
Dimensions
Length 1980 mm / 78.0 in
Width 740 mm / 29.1 in
Wheelbase
1386 mm / 54.5 in
Seat Height
800 mm / 31.4 in
Ground Clearance
150 mm / 5.9 in
Dry Weight
135 kg / 297.6 LBS
Fuel Capacity
12,5 Litres / 3.3 US gal
Based in Italy, CR&S (Café Racers and Specials) are doing
what Italians do best – building whacky motorcycles that look and feel a bit
special. The spec is not that impressive – the Vun is powered by a 4-valve,
DOHC, 652cc, single-cylinder, liquid-cooled Bombardier-Rotax engine that
makes a mere 54 horsepower. But since the bike only weighs 135kg dry,
performance is entertaining. For those who think 54bhp may be a bit
much, there’s also an ‘underpowered’ 29bhp version (that’s what the factory
website says it is!) available, as is a 68bhp racing version, which is for
track use only. All versions of the Vun are, however, fitted with a
steel-tube chassis, Ceriani 46mm front forks, adjustable Paioli monoshock
rear suspension and 320mm single-disc brakes at the front.
The Vun is designed with minimum weight in mind,
to this end the bike uses an underslung exhaust as used on Buell bikes.
One of the main advantages of this design is that it keeps weight low down and
lowers the center of gravity a vital component of good handling.
CR&S is a small company of around ten individuals.
Roberto Crepaldi, one of the company's cofounders was a close friend of John
Britten, a man who created one of the most radical bikes of the century the
Britten V1000.
The Vun pays homage to this visionary who died in 1995.