Certo peccato che quello che ho provato e visto va contro quello che dici...
Rivista Frontline, Marzo 2010
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Acura RDX and BMW X3
“BMW’s X-Drive system worked rather well, however the X3 tended to
push out in the turns where there was a bit of a delay before the stability
control brought us back into line. This was especially noticeable on a turn
where the apex was also the top of a hill—as we accelerated out of the
turn, we would slide to the outside of the course before gaining traction
“Another part of the course that showed a weakness in the X-Drive was a right turn up a somewhat steep, but short, snow-covered hill. While exiting the turn we floored the accelerator until we had traction, but power was cut by the traction control system and [came] back on suddenly as we
crested the hill.” “Taking the RDX out on the course next, the most noticeable difference
was that the Acura system keeps you on the desired line by engaging
stability control much quicker than the BMW system.”
“But where the SH-AWD really shined was at the apex at the top of the
hill. With the front wheels turned while exiting the corner, the BMW
pushed out before its stability system used braking to direct the front end
in the right direction. With Acura’s SH-AWD system’s unique ability to
direct power to each rear wheel individually, power was applied to the
outside rear wheel as we accelerated out of the corner, pivoting the RDX
into the direction we were turned. Rather than applying brake to a front
wheel to keep us on course, power was applied to a rear wheel for a
much smoother and more affective result.”
“The Acura also excelled at the short hill—power transitioned much
smoother and we found the RDX didn’t lose as much momentum as the
X3. With the SH-AWD system, yaw can be corrected with a combination
of power at the rear outward wheel and braking at the front, so less
momentum is lost.”
“The X3 handled this course well, but the SH-AWD in the RDX clearly had the advantage."
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Ti traduco i punti salienti (hanno fatto una prova su fondi innevati ad elevazione variabile)
Ritardi di intervento piu' evidenti sul BMW e con funzionamento piu' "ad interruttore" rispetto alla Acura.....la gestione vettoriale della Acura rivela una superiorita' di maneggevolezza e tenuta nell'affrontare curve su fondi scivolosi a velocita' ...premetto, la X3 esce dalla prova alla grande, mica e' una ciofeca ma in questo particolare test ne esce un po' indietro.....ripeto, possiamo fare tutti i test che vuoi dove la BMW riesce ad essere al top e viceversa.....ma se ti guardi l'implementazione tecnica vedrai che e' come ti dico io.....tu mi dai torto a priori senza neanche conoscere a fondo gli altri sistemi che ti ho presentato.
« Ultima modifica: Novembre 11, 2010, 10:33:37 am da saturn_v »
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