|
Vincent Special 1000 "NERO"
1959 VINCENT SPECIAL "NERO." After George Brown left I_I the
Vincent concern in 1951 he sadly missed his rides on "Gunga
Din", and soon set about finding a successor. For about £5 he purchased a
crashed Vincent and, after many hours of work, the result was a mount even more
potent than "Gunga Din"!
The fact that the machine had been burnt out when he bought it
may have had some bearing on the name he gave it—"Nero"!
But this machine was to be no amateur fiddler; in fact it played a most
purposeful tune and by 1959 it had had its name—or its more prosaic counterpart,
"998 Vincent Special"—carved on premier awards for almost every sprint and
hill-climb event in the country. (And soon after in almost the same form, it was
to be emblazoned in the World Record book for the kilometre standing-start
record solo and sidecar.)
As the machine was not a factory-owned job, it was practicable
to ncorporate many non-standard items in its specification. A pivoting-fork from
a Velocette and a pair of A.M.C. "Teledraulic" forks were the two most obvious
changes externally.
Inside the motor, the whole crankshaft assembly was changed. The drive-side
mainshaft, flywheel and crankpin were machined from a solid billet and carried
in a much larger main bearing.
The compression ratio of "Nero" in 1959 was 15:1, to take the
maximum advantage of alcohol and nitro-methane full blends, yet the machine was
quite tractable at low speeds. Gearbox internals were close-ratio, though under
wet conditions only two or three of them would be used to get optimum
performance over a standing "quarter". Maximum r.p.m. were about 6,800, at which
speed some 85 b.h.p. was available.
The machine was still being used, and improved, in 1961, the
time of writing—it gained the solo sprint "kilo" record as we closed for press.
For quarter-mile sprints only a head fairing, seen fitted, was used. For longer
distan a full "dustbin"-style enclosure was favoured, as it gave a considerable
increase terminal speed. These pictures show "Nero" in 1959 trim.
SPECIFICATION Engine: 50" Vee-twin 1,000 c.c. o.h.v.; valve
operation
by high camshafts and short push-rods. Ignition: magneto. Transmission: primary
drive via triple-row chain with
slipper tensioner to four-speed gearbox in
with engine; final drive by chain. Frame: box-girder backbone, incorporating
steer
head and oil tank, bolted to cylinder-heads;
suspension by swinging fork. Forks: A.M.C. telescopies.
After the Brough Superior ended its career, the title of the
Rolls Royce of motorcycles went to Vincent HRD, a British company that produced
high-quality racing motorcycles.
The racer George Brown worked for the Vincent HRD company for a while, leaving
it late in 1951. Brown started out racing a Vincent nicknamed "Gunga Din."
Subsequently he bought a half-burned Vincent from a car wrecker, and after that
he acquired a new prototype that was more powerful than the Gunga Din.
This motorcycle he named "Nero."
With the Nero, Brown became a star in standing-start racing. On November 13,
1960, he set a world record for the 1,200-cc. class with sidecar, riding a
kilometer from a standing start in 22"6. The following year, on August 20, he
set a world record without sidecar, at 174.986 km./hr.
Then, on June 20, 1964, he surpassed his own record by
covering the standing kilometer in 19"47, attaining a speed of 184.814 km./hr.
(about 115 m.p.h.).
Brown's Nero was fueled by alcohol and nitromethane, with a maximum compression
ratio of 15:1. In the final versions Brown successfully rode with a
supercharger, which was allowed in standing-start racing.
Motorcycle: Vincent HRD 1000 Special Nero
Manufacturer: Vincent HRD-George
Brown, England Type: Acceleration races, hill climbing Year: 1959
Engine: Vincent HRD-Brown, two-cylinder V, four-stroke, overhead valve
distribution, rod and rocker. Raised cam type. Displacement 986 cc. (84 mm. x 89
mm.)
Cooling: Air
Transmission: Four-speed block
Power: 85 h.p. at 6,800 r.p.m.
Maximum speed: Dependent on gear
Chassis: Single bar with suspended engine. Front and rear, telescopic suspension
Brakes: Front and rear, side drum
|
