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Old 18-11-2007, 06:39 PM
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Thumbs up PMT Vs SAVA TYRES.

hi all,
This test was done in Italy very recent,i found it quite interesting.


We’ve decided to test the tires using a GRC RR, graciously made available by the GRC company, and thanks to the assistance and availability of Fabio Poli, mechanic for the official team.

The test was executed with the following pressures, which were optimum for the PMT from the first tries, and subsequently modified on the SAVA which revealed themselves to be a bit difficult to manage.

PMT T41

Anterior Pressure 1.1
Posterior Pressure 1.4

SAVA MC0

Anterior Pressure 1.1
Posterior Pressure 1.4
-----------------------
Anterior Pressure 1.4
Posterior Pressure 1.7


Leaving the Box the SAVA tires give a lighter feeling with respect to the PMT tires, rendering the bike decidedly more manageable, almost as if the footprint of the tire were different. A few laps were sufficient to bring the SAVA tires to optimal temperature, given their blend which is markedly softer than that of the PMT.


BRAKING
PMT in braking is decidedly efficient, transmitting a good feeling to the pilot, and permitting a decisive entry into curves.
SAVA, with the first pressure settings, is efficient in braking, demonstrating good performance and good stability.
Using the second pressure settings these tires are markedly more difficult to manage, losing adherence too easily in the first phase of insertion while the brakes are still on, at times also without the possibility of ‘retaking’ the anterior.



INSERTION
PMT in the insertion phase permits to brake until the bike is into the curve, transmitting a sense of security; easily manageable also in the phase of loss of adherence, once the pilot has his or her knee down.
SAVA in both the pressure configurations (in particular in the 2nd configuration) renders the insertion into the curve difficult, transmitting unwieldy movements to the pilot, and requiring much more physical piloting in order to avoid losing anterior adherence.
This performance derives from the rigidity of the shell which is not able to absorb impact and flex according to the contours of the terrain. Despite rugged terrain the tires did not give the impression of losing adherence.



THROUGH THE CURVE
PMT through the curve in certain cases doesn’t allow for much correction. In the case in which the braking phase was too decisive and the velocity of percorrenza sustained, the T41 blend tends to cause both tires to slip outward, making the closure of the ‘ideal line’ difficult.
SAVA makes the percorrenza one of its major qualities, above all in stretches of smooth track. Thanks to a decidedly softer blend, the pilot has the sense of being right on the ground, and can fairly easily correct the ‘ideal line’.


DIRECTION CHANGE
PMT in direction change demonstrates reactivity, and in the subsequent appoggio is able to absorb the load deriving from the abrupt shifting of weight without transmitting large movements to the bike’s body.
SAVA in direction change is reactive and precise, getting the pilot in trouble during the subsequent weight shift, transmitting large movements, again due to the rigidity of the shell, not able to correctly absorb the weight load deriving from the direction change.


ACCELERATION
PMT is perfect in acceleration. The tires absorb perfectly the transferral of weight onto the posterior without transmitting large loads to the bike body, which remains stable and holds the line, shielding the pilot from large movements.
SAVA in acceration is decidedly unstable. In both pressure configurations, the tires transmit an ugly jumping sensation to the posterior almost as if the structure of the tire were incapable of absorbing the weight load deriving from the lateral acceleration exiting a curve. Despite this, the tire never lost adherence.


At the end of the tests, giving an overall look at the tires we noticed that the SAVAs showed more trauma to the blend, showing evident signs of wear and ‘work’ of the tire itself. In contrast, the PMTs appeared intact and without any sign of wear thanks to the decidedly ‘harder’ blend with respect to that of the competitors.
The temperature for use of the tires is also decidedly different. At the end of the test, the SAVA tires were quite hot, while the PMT were a few degrees cooler.

Cheers danny
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Cheers Danny
www.pocketracingbikes.com.au
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