mv_agusta
Active member
evo malo o JC, tj ono što je joke napisao pa da se t-nax tema oslobodi OTa
i jedan video
http://www.youtube.com/watch?v=y-QqHE0bNjw
i službena stranica
http://www.jcostacompetition.com/
joke said:
The Transversal J. Costa drive
The drive Transversal J.costa is a drive that is conceptually not too far from the drive roller, but with a
number of features not only the simplified manufacturing but that improve the functioning. Based on a structure
like that of a conventional automatic transmission, in the drive Transversal change the dish
outside the pulley conductive, the bell and the rollers (which, as we shall see, no longer use rollers).
In the drive Transversal no ramps or rollers: the dish mobile pulley has a series of holes inclined from
the inside out, distributed radially, which housed a sliding masses in the form of a finger, and instead
are pushed outward by centrifugal force. Upon leaving, pushing the hood of strength and compel the
dish sideways and close the pulley by varying the diameter of the pulley. In that drive the hood of force
occurs in a simple but vitally important to define the behavior of the drive, since according to the
profile and as the "attacking" the masses sliding, the drive will close one way or another pulley.
Variable conventional:
Current drive roller is the system used by all major brands, and therefore the most widespread. The pulley
ride a bell for the outside of the dish outside. The dish and set about accommodations bell shaped
ramp for those who slip a few pesos into their cylindrical rollers. Pushed by the centrifugal force
these rollers moving outwards to exert a force on the ramps between the resting forcing the plate to move
abroad, squeezing the width of the pulley and increasing the diameter of work of the strap. This will
cause a change in the gear ratio to highest. When the engine turns lower rollers stop pushing the dish
outside the pulley, the pulley driven recovers and return to a more short gear.
Dishes of pulleys are usually aluminum, steel bell, rollers and plastic with a metallic core. All revolve
sympathetic to the engine, connected through the clutch. It is clear that the weight of the rollers is
very important and is closely related to the behaviour of the engine; rollers need a slight speed
superior to the centrifugal force (proportional to the mass) allows close the pulley. Using light rollers
get a drive pulleys that closes higher returns, a relationship of exchange generally shorter and an engine
with more revs. Instead, with heavy rollers, the drive will open too soon, the pulley is closed to a lesser
regime and the relationship is generally longer and the engine will be at lower revs.
A similar importance is shaped like ramps where are the rollers, as they also clearly influenced the
behaviour of drive and the way it distributes the thrust of the engine in different regimes of rotation.
The advantages and peculiarities:
The advantages of variable Transversal go beyond the simplicity constructive. Obviously the
assembly does not increase engine performance in itself, but improves the performance of the motorcycle,
since the design of the profile of the bell of force and how the masses sliding bearing allow an increase
in the range of shifting. The drive Transversal obtain permits, there is a series of drive, a shorter at low
rpm (better acceleration), and a relationship where the longest drive is fully opened (closed pulley),
thereby allowing the engine turn more relaxed when circulates in plain, and improving the tip if we
drive downhill. While the engine as we said never give more power, allowing the drive Cross is to
increase the values of power to the wheel, at any speed but especially in the range of low to medium
speed, improved (in many cases dramatically) accelerations. Why this happens? Simply because
thanks to the design of the whole bell / masses sliding the engine turns ever more cheerful and close
to maximum torque speed with which the drive series, and this simply means having more power
to the wheel and ultimately increase performance of the whole. Another advantage intrinsic to the
design of this element is the smoothness of operation, especially in the models for 4-stroke engines.
It is well known in the 4-stroke engine cycle only one of every 4 laps piston is driving, so each of
two rounds which makes the whole crankshaft, in turn other tour of inertia, ie that the shift is
slightly irregular, and this particular note at idle drives where the roller ring with a metal campaneo
typical, whereas with the drive Transversal going fine (as a silk) because of the simplicity constructive.
The lack of internal friction to drive cross gives a better touch and a rapid response higher respect for
the drive roller; to have no contact between bell and pulley outside rather than the sliding of the masses,
to cut gas pulley closes in almost instantaneously, while in a classic drive, bell and pulley are guided by
some intermediate elements that hinder the relative motion of two pieces and delaying the closing and
opening of the pulley. Besides all the virtues described, the drive has succeeded Transversal maturity
to ensure adequate maintenance and longevity comparable (if not better) to that of conventional rollers,
and the quality of materials and mechanized with whom we work done This invention a secure and reliable
performance contrasted.
i jedan video
http://www.youtube.com/watch?v=y-QqHE0bNjw
i službena stranica
http://www.jcostacompetition.com/
)?
,a teske su za nabaviti i skupe su,sve u svemu,prednosti su sta se motor vrti vise,ali razlike skoro da i nema,tako da preporucujem malo ili poli 
