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748 - 2002 Novelty
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| -New
smooth hull -New grey coloration for S version (photo) -748R Power: 106 cv; Weight: 192 Kg -748S Power: 97 cv; Weight: 196 Kg |
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graphical:
it is on the 916 is on the 748 we find a chassis to lightened chromium-molybdenum,
new connecting rods in titanium, a new regolator of the tension electrical worker
and new pliers of the brake (are those of the ST2), while it has been eliminated
the spy of recharges of the battery mail previously on the dashboard; beyond to
this, the 748 SPS mounts the guides valves in bronze, a new one pick-up for use
in track, the tube posterior brake and the tube clutch in plait metallic, plus
the new gambling chip of homologation for the race that that one of " old
" the 748 SP replaces. On the 916 SPS there are one new box of the filter
air in carbon, the shock-absorber of Ohlins steering and the heat parry in carbon.
Identical from the first moment, both single-seater, differenziano only for the
various coloration: yellow the 748, rigorously red the 916. They are characterized
from one rich technical equipment: floating discs brake in cast iron, shock-absorber
of steering, the possibility to regulate the inclination of the pipe of steering
of a degree (from 23°30 ' to 24°30 ') like on the free motion from race,
multiple adjustable staple, levers adjustable brake and clutch, exclusive fork
monoarm with Ohlins shock-absorber and drainages Termignoni in carbon fiber with
relative Eprom, in alternative to the originals. The famous bicylindrical propeller
is fed to injection electronic, with an injector for cylinder on 748 and quite
two on the 916, in such way to assure the maximum rendering to all the spin regimes.
Ducati SPS is not sure Comfortable: the saddleback high and least is quilt, the
splendid commandos to pedal is of small dimensions, the high and rear footrests,
the tight and low handle-bar; but, once in saddleback the pilot forms an only
body with the motion, the legs and the arms that together perfectly with the tank
and the bow bust on this last one. Already from firm the sport nature it makes
yourself to feel: the loaded wrists are a lot, while the neck is subordinate to
a remarkable effort for crouch behind the cupola. Ready at starter, also to cold
(remember that the starter does not exist, but only a command in order to block
the accelerator), to the inferior regimes mutter, high the thunder: one true music
that disseminating from the Termignoni drainages. The 748 SPS with this particular
configuration (Eprom and free drainages) does not love to turn low: it resumes
already from the 3.000 turns, but it is lazy and it has one certain tendency to
tear; it offers the best of himself from the 7-8.000 turns until to the 11.000,
with possibility of I lengthen until 11,800 turns, that they correspond to the
cut of the limiter. Fast and fluid in going up of turns, it prefers the higher
regimes: to the bottoms and means he is through and scorbutic, as famous above
all in the departures where, accomplice also the first march much long one, is
indispensable to make to slip the clutch. From part its, this last one reveals
itself always perfect and also modulated if the effort for operate is superior
to the average. Indeed exceptional the motor of the 
916
SPS, always ready in the answer to every minim spin of the throttle; the rumble
is impetuous, always thanks to the free drainages and the special Eprom. Powerful
already from the 5.000 turns, pushes strongly until 7,000 turns where " it
explodes " until the 11,000. Main its esteem is in the push supplied to the
medium regimes, that it allows to a limited use of the change a lot is the brace
supplied from " pompous ". It seems all easy, but opening wide the gas
they must do the account with 110 CV at wheel. Not very many in absolute, but
distributed with one such anger not to leave nearly the time to think; and the
rearing ones in acceleration are not available. Practically identical, the two
motion externally is distinguished for the presence, on the 916, of the nameplate
in silver with the progressive number of the produced units and the exclusive
shock-absorber of Ohlins steering. In track the 748 SPS manage divinely: it follows
with every rigor command of the pilot and turn after turn extension potential
much elevating. It seems that the limit never does not arrive, since although
detached cut of and quick introductions the equilibrium remains intact, giving
formidable feelings. Its behaviour is that typical one of the motion from competition;
it improves to increasing of the speed. The angle of reduced steering and the
position of guide without compromises can be charged, but once in track all it
is divinely to the just place: the commandos to pedal perfect, are immediately
and instinctive, fast the lateral movements of the body; only neo, the angular
of the tank that in the long run creates a sure soreness to thighs. The fold angle
is exaggerated, also for merit of the tires Dunlop D207GP (that we have tried
in alternative to the Pirelli Dragon Run of lend series and a lot that they render
it particularly fluid in the support and the variations of inclination. The suspensions
obviously are not comfortable on road, but in track the staple works well: it
sinks the just one in detached and copy asphalt in precise way, therefore like
the posterior one, without never to create the minimum decompensation and facilitating
the opening of the gas in curve escape, maintaining with rigor the trajectory
without never to increase. The refrained one is exemplary: much powerful one,
concurs detached cut of; sin that, with passing of the turns, the race of the
lever grows tall until touching the grip handle, in spite of the system is equipped
of the tubes in metallic plait. The posterior brake, of small dimensions, it does
not come nearly never called in cause, also in virtue of the abundant offered
ability refraining from the 
propeller.
The 916 SPS has, obviously, the same great dowries of guide of the 748, but it
is demanding to carry to the limit: 16 CV in more are felt and, above all, the
elevated brace more, a lot that in escape from the curves opening wide the gas
the front chassis is lightened and the detachment after are endured in ambush;
all this is a most pleasant emotion, but it wants a sure engagement to drive.
The " pompous " it is a lot lively, the gear fast shell fastly, the
feelings are only, with that " coming from breath " from the wide case
filter mails under the tank. But it is to approach of the curves that comes outside
the true character: neutral to center curve, the 916 SPS allows to still open
the gas in fold. It is not fluid as the 748, but to every I point out of "
opening " corresponds a large adrenalin discharge and asphalt comes
devour, a lot that the rectilinear ones seem more and more short. Impressive are
the offered traction and the brace from the bicylindrical one: a advanced relationship
can be allowed us also, a lot thinks to us " pompous" catapult next
to the successive curve, come if null was. Indeed fantastic. Also the 916 were
equipped with Dunlop D207GP: the support supplied from these tires is immense,
but us fast how much has not seemed therefore quick in they it was with mounted
Michelin TX15-25 of first equipment. Also in this case the refrained one is impetuous,
but once again the pompous effect of the front brake is truly annoying. Modulated,
the clutch has the same characteristics found on the 748: not resent of the greater
power, but the effort is advanced to the average. The change is precise and very
spaced it is for the road is for the track, with drawn near relationships. This
Ducati has to us truly " kidnapped ": the thought of leaves sure an
empty one us within; the most pleasant feelings will follow us in order a lot,
much time. The price? Decidedly beloved! 31 million for the 748, 12 in more for
the version than greater piston displacement.
Every time that comes announced an modernized version of the sport Ducati remains
surprises for the nth powered of a motor that seems inexhaustible. In 1998,
instead, the House declares for the 916 one inferior power: i 134 CV to the
tree of the ' 97 have become 123 (that is the power found to the bench the past
year and substantially equal upkeep this year). The development therefore it
is ended? The motion this year goes more plan? The answer arrives from the Ing.
Claudio Domenicali who, beyond to manage the fates of the sport activity, constantly
is engaged on the models of future production. " Not, the development is
not finished, and not destined motors to production ' 98 is less powerful. It
has been simply adopted European norm 95/1/CE, that it introduces stricter coefficients
of atmospheric correction in order to calculate, from the value found to the
bench, the effective power of the motor. In the truth the motors are equally
lend regarding the previous versions. Indeed, with more reading to connecting
rods in titanium motors SPS they vibrate little, they have therefore smaller
frictions, for which the power it is increased of some fraction of CV. Besides
is increased the longevity of the mechanical organs and motor Carter, always
thanks to the smaller solicitations of the connecting rods, are still margins
of improvement for the total performances of the motion; the Racing version,
retort of the 916 officials has approximately 155 cv (calculated at tree today).
A value that still does not represent the caught up maximum limit from the pompous?
officials, last stage of the development of a born and grown motor with the
pencils ones of the Ing. Taglioni. Before Bordi and then Mengoli, and hour with
the numerous computers of staff the technical one in force to the Ducati. Returning
to the details, the valuable connecting rods in forged titanium weigh 380 grams,
against the 510 of you precede Pankl in steel, and have been tested in order
a whole year. The lives that lock the big end of connecting rod are in MP159,
one nichel-cobalt-chromium-molybdenum alloy currently considered the best material
for these applications. The fatigue strength and the robustness of the new connecting
rods are advanced to those in steel, and no particular maintenance is not previewed.
And? increased but to the game of assembly of the half-bearings (bronzine) of
the big end of connecting rod, because the expansion 
of
titanium is inferior to that one of the steel. In the heads 748 SPS have only
been replaced the guides valves in cast iron; At the agonistic level they had
given problems, with those in bronze (on the 916 SPS were already in this material)
adapted to valves with stalk of 7 mm. of diameter. The other modifications introduced
on the SPS regard the cycling part and electrical worker. The more important
regards the chassis, hour constructed with the same tubes of steel to chromium-molybdenum
of the version Racing, lighter than 1 kg regarding that one of the 748/916 normal
schools. The movement of the steering comes more controlled from a Ohlins shock-absorber,
adjustable and refined in the construction regarding the Boge with fixed calibration.
The air-box and the heat parry, place between tail and noises suppressor, are
in carbon fiber and considerably lighter than those in plastic. The brakes have
been bring with new Brembo pliers, always to four pistons from 30 and 34 mm
of diameter but with structure hardened from external ribbings, and better packings
than held (O-Ring) for the pistons. And above all with a interasse greater,
between the holes of implantation to it attacks of the staple, that smaller
tolerance in the positioning in relation to the refraining track of the disc
allows one. On the 748 SPS, tubes of the posterior brake and the clutch in metallic
plait are mounted. The system electrical worker instead has received a regulator
of tension produced from the Japanese Shindengen, so reliable who has rendered
the spy of signalling for eventual problems useless of recharges of the battery,
eliminated from the dashboard of the instrumentation. On 748 SP ' 97 used in
track was emerged also a problem to the pick-up of the ignition, than hour it
has been replaced and sobstitute with one more reliable. " This has been
one of the typical cases in which the race they really serve to improve the
series product. The participation to Supersport and the Production Sport has
been many profits in order to quickly resolve those defects that would perhaps
be emerged more in here in the time. "
| Ducati 748 tests: | |
