|
Make Model |
Ducati 750 Sport |
|
Year |
1974 |
|
Engine |
Air cooled, four stroke, 90°“L”twin cylinder, SOHC, 2 valve per cylinder |
|
Capacity |
748 |
|
Bore x Stroke |
80 x 74.4mm |
|
Compression Ratio |
9.3:1 |
|
Induction |
2x 32mm Dell'Orto carbs |
|
Ignition /
Starting |
|
|
Max Power |
55 hp @ 7900 rpm |
|
Max Torque |
|
|
Transmission /
Drive |
5 Speed / chain |
|
Front Suspension |
Hydraulic forks |
|
Rear Suspension |
Dual shocks swingarm |
|
Front Brakes |
Single 280mm disc |
|
Rear Brakes |
200mm drum |
|
Front Tyre |
3.25-19 |
|
Rear Tyre |
3.50-18 |
|
Dry-Weight |
185 kg |
|
Fuel Capacity |
|
|
Manual |
Epll.no-ip.com /
Motorrad /
Australian Motorcycle Trader |
Without the traffic it would be a brilliant
biking route. The road snakes and dips through the countryside, a narrow
two-lane ribbon whose many bends offer a challenging variety of angles, cambers,
and speeds. It's Ducati Country, to quote the famous advertising phrase except
that today there are far too many trucks, each one droning slowly along at the
head of a long line of cars.
But it's still a great ride on the 750 Sport,
which dispatches the traffic almost as though it wasn't there. Every time I
catch up to a line of vehicles, the slim Ducati zips past, barely needing to use
the opposite side of the road as it picks them off one by one. The bike's
stability is impressive, its instant reaction to an occasional touch of brake
reassuring, and its effortless acceleration hugely satisfying.
The 750 Sport's pace and efficiency on that busy
road came as some surprise, because early Ducati V-twins are normally revered
more for their speed through fast curves than their ability to cut through
traffic. Although this Sport's handling didn't disappoint, it was the motor's
flexibility that made even more of a lasting impression.
This bike's V-twin engine is not a desmo, either.
Back in 1973, Ducati had yet to introduce desmodromic valve gear for roadsters.
But the Sport, whose single overhead cams operate valves closed by conventional
coil springs, is an important model in Ducati history. Lean, aggressive, and
functional, the 750 was the Bologna factory's first true sporting V-twin.
Essentially the 750 Sport was a racier version of
the 750GT, Ducati's first big V-twin, which had been introduced two years
earlier by the firm then best known for elegant singles. Engineer Fabio
Taglioni's design established the 90-degree air-cooled layout, with dimensions
of 80 x 74.4 mm giving a capacity of 748cc. The GT's peak output of 50 BHP was
raised to 56 BHP at 8200 RPM for the Sport, by a higher 9:1 compression ratio,
plus larger 32 mm Dell'Orto carburetors that were filterless apart from wire
mesh over the end of each bellmouth.
The Sport's basic chassis components were also
shared with the GT, including the steel frame that was a larger version of the
trellis designed for Ducati's 500cc V-twin racers by British specialist Colin
Seeley. Marzocchi supplied leading-axle forks and rear shocks; braking was
handled by a single 280 mm (11 in) front disc, with a single-leading-shoe drum
at the rear.
Where the Sport chassis differed was in its
clip-on .handlebars, rear-set footpegs and singly seat, plus a half-fairing in
some markets. The Sport's other most obvious difference was its yellow tank and
side panels, in contrast to the restrained red and black of the GT. This bike
just looks right, its bold paintwork complementing the heavily finned
motor and slender Conti pipes. There's no starter motor, no indicators, no
excess weight.
That's great once you're moving, although the
high-compression motor needs a hefty kick before it will roar into life. The
bars are low and well forward, but the footpegs are not radically rear-set,
giving a rather hunched riding position that leaves knees and elbows in close
proximity. The clutch is light; first gear goes in with a gentle, right-footed
nudge on the one-up, four-down gearbox. And then the Sport is accelerating away,
its midrange torque and light weight doing much to compensate for the lack of
outright horsepower.
My first impression of the engine was of how
tractable and eager it was. Throttle response was excellent at virtually any
speed, a crack of the right wrist prompting the Dell'Ortos' accelerator pumps to
deliver a dollop of straight juice that sent the Ducati barreling forward. The
gears snicked in easily, and the 750's flexibility meant that on a fairly fast
road there was rarely any need to come down more than one ratio for all but the
tightest of bends.
Some vibration came drumming through the bars and
seat fr< about 70 mpri(113 km/h), giving a reminder that the sparsely padded
Sport was too single-minded to be comfortable on long runs. Even so, the 750
cruised with a fairly unstressed and long-legged feel. Revved harder, it would
produce useful power to thi 8000 RPM red zone, with a top speed of about 125 mph
(200 km/h)—good enough to show a clean pair of Contis to most bike in 1973.
That was especially true when a few bends were
added, for i1 was then that the Ducati's lightness and chassis quality showed
their worth. Aided by braided hose, this bike's cast-iron single di: and
Lockheed caliper hauled the Sport up efficiently—hard enou that I didn't feel
the need for the second disc that was originally optional extra.
And although the Marzocchis at either end didn't
provide mu comfort, the suspension and frame coped well with hard corneri With
the V-twin's lengthy 1500 mm (59 in) wheelbase and a 19-inch front wheel, the
Sport was never going to be particularly agile but it could be made to change
direction precisely and even quickly, a firm nudge on the narroVv clip-ons. i
bumpy roads, the Sport bounced around a bit as the stiff rrudely damped units
failed to react fast enough. But this ; Dunlop TT100s gave plenty of grip,
ground clearance was rous, and it was easy to imagine how a hard-charging
Ducati' could have embarrassed riders of more powerful bikes, espite this and
the publicity boost from Paul Smart's famous in the Imola 200 race in April
1972, the expensive and impractical Sport was not a huge success for Ducati.
Production halted at the end of 1974, after a few specification changes,
including new forks and switchgear. A year later the Sport was softened with a
dual seat and pillion footrests in a belated attempted to attract a wider
audience.
'artly because of its comparative rarity, the 750
Sport is now a /desirable model—and why not, indeed? With its classical lines,
geous sound, exhilarating performance, and purposeful charac-the aptly named
Sport was the model that heralded a string of igical V-twins from Ducati.
Source Superbike of the seventies
