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post #1 of 11 (permalink) Old 02-22-2006, 02:13 AM Thread Starter
 
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Lightbulb MotoGP: PICS - Rossi's 16" rear?

Thursday, 16th February 2006

During this week's Sepang MotoGP test, world champion Valentino Rossi is believed to have tested with a special 16" rear Michelin tyre (pictured), rather than the usual 16.5", on his factory M1.

Rossi and team-mate Colin Edwards were seeking a solution to recent chatter problems with the new 2006 M1 at Sepang, and it is thought that the alternative tyre size was part of that process.

"We worked very well with Michelin and with one or two new tyres that they brought we made some good improvements to the vibration (chatter)," said Rossi, without making any specific mention of a different tyre size.

Rossi ended the test with the fourth fastest overall time, with Edwards in seventh.


Rossi's 16-inch rear Michelin, Sepang MotoGP test, February 2006.

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post #2 of 11 (permalink) Old 02-22-2006, 05:44 AM
 
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I saw that last week ... but i don't think he will be running the 16'' in the race though....
i doubt it
..

And val dam man.. really nice to see you back ..
Take care bro
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post #3 of 11 (permalink) Old 02-22-2006, 06:44 AM
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Val is back
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post #4 of 11 (permalink) Old 02-22-2006, 07:29 AM
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Quote:
Originally Posted by R1biker
And val dam man.. really nice to see you back ..
Take care bro
x3, WB man
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post #5 of 11 (permalink) Old 02-22-2006, 11:41 PM Thread Starter
 
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Thanks guys! Nice to see you guys too!


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post #6 of 11 (permalink) Old 02-23-2006, 12:40 PM
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now val and r1biker...this section is about to get jump started w/ both of them in the drivers seat...

can't wait to see the races start up


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post #7 of 11 (permalink) Old 02-23-2006, 01:00 PM
 
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now val and r1biker...this section is about to get jump started w/ both of them in the drivers seat...

can't wait to see the races start up

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post #8 of 11 (permalink) Old 02-23-2006, 02:20 PM
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that's a small wheel! WOW!

how would a smaller wheel stop chatter? i thought chatter was a front end problem.


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post #9 of 11 (permalink) Old 02-23-2006, 07:28 PM
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Quote:
Originally Posted by firehawk
that's a small wheel! WOW!

how would a smaller wheel stop chatter? i thought chatter was a front end problem.
chatter is often rear end "skipping" under heavy braking...

not sure how a smaller rear wheel will help, but i ain't no physics fiend

prejudices are what fools use for reason
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post #10 of 11 (permalink) Old 02-24-2006, 08:29 AM
 
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Maybe the larger sidewall of a 16" has more "give" to it, so to speak...?
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post #11 of 11 (permalink) Old 02-24-2006, 09:24 AM
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yea, that's a possibility. just lets the tire flex a little more and stays in better contact with the ground.

just seems like having more tire/sidewall out there is going to cause problems in corners and straits with tire distortion. might be why they were just testing it...wonder if it worked?


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