Hoosier Tires
#1
Posted 01-11-2012 10:22 AM
Pat
#2
Posted 01-11-2012 11:03 AM
East Street Auto Parts
Jim@Eaststreet.com
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#3
Posted 01-11-2012 11:56 AM
Alex Bolanos - #57
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#4
Posted 01-11-2012 12:50 PM
Jim
East Street Auto Parts
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#5
Posted 01-11-2012 01:33 PM
everyone's a hero on new Hoosiers (1st and 2nd heat cycles), the challenge for the drivers will be to adjust their driving style and car set up to maintain corner speed on the 4th, 5th and 6th heat cycles, trying to stay within .5 sec of their previous times on the fresher tires, few have the experience to do this.
Very few (Buras) can handle that into the 7th - 8th heat cycles.
What Drago says above is about - 1.5 sec per lap faster than last years tire given the slightly reconfigured T17 and the 3 less H.P. from last year for the 99's,
1.6's still unknown, probably close or the same?
Homestead should be more telling.
#6
Posted 01-11-2012 03:11 PM
the challenge for the drivers will be to adjust their driving style and car set up to maintain corner speed on the 4th, 5th and 6th heat cycles
Duh, just buy more tires... and more... and more....
#7
Posted 01-11-2012 05:17 PM
#8
Posted 01-11-2012 07:14 PM
Lets wait until races are run at road america to see what effect the changes have made! That will be the test!
Yeah, that should settle everything ... Same cars/ same drivers will yield same results. Regardless of the tires we run, regardless of whether we use this years rules or last. If you want to win in any car at those two events, you better career the car or be living right.
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#9
Posted 01-11-2012 08:53 PM
#10
Posted 01-12-2012 07:53 AM
Practiced on them
Qual'd pole on them
Lap 7 was faster than qual
3rd lap from the end was faster than lap 7
Ran a test day on them. 3rd session time was .5 faster than the enduro fast lap.
I have absolutely nothing but positive things to say about these tires. Very consistent from sticker to EOL (which takes a while!)
#11
Posted 01-12-2012 08:09 AM
2 hr stint which would have put them at about 4 heat cycles
Interesting. So 30 minutes equals 1 heat cycle?
I've been subscribing to the theory that a heat cycle was the incidence of bringing the tire to operating temperature and back to ambient temp, regardless of duration of time. Obviously 2 hours will account for more treadwear but does it multiply heat cycling too?
Is Saul Speedwell lurking?
#12
Posted 01-12-2012 08:21 AM
Interesting. So 30 minutes equals 1 heat cycle?
I've been subscribing to the theory that a heat cycle was the incidence of bringing the tire to operating temperature and back to ambient temp, regardless of duration of time. Obviously 2 hours will account for more treadwear but does it multiply heat cycling too?
Is Saul Speedwell lurking?
Your thoughts would be correct about a "heat cycle".
James York
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#03
#13
Posted 01-12-2012 10:37 AM
wheel
#14
Posted 01-12-2012 10:46 AM
K. Webb
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#15
Posted 01-12-2012 11:44 AM
agreed each heat cycle will have the result of making the rubber harder. however Long heat cycles may result in the tire delivering fewer heat cycles. for example. we at Mid Ohio get about 15 to 18 Hc out of a hoosier, however grip does start to fall off after 8 to 10 but we are talking about a range of 20 to 40 min. heat cycles. If your doing an 8 hr endro you may only get one heat cycle out of a tire.A heat cycle is a heat cycle. It doesn't matter if it is 4 laps to scuff, 3 laps to qualify or 20 laps in a race. Time does not make a heat cycle.
wheel
Frank
TnT Racing
SCCA Ohio Valley Region
#16
Posted 01-12-2012 07:30 PM
A heat cycle is a heat cycle. It doesn't matter if it is 4 laps to scuff, 3 laps to qualify or 20 laps in a race. Time does not make a heat cycle.
wheel
I agree that I misspoke when I said 2hrs was like 4 heat cycles (really meaning they were consistent for a surprisingly long time) but I don't know I agree with that.
My very limited understanding is that it's somewhat like heat treating metals. You get the material hot enough that the molecules loosen up a bit and when they cool slowly they end up in a more organized arrangement which changes the material properties. There is some minimum amount of time required to get the tires hot enough for long enough to let the material do it's thing.
#17
Posted 01-12-2012 08:14 PM
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#18
Posted 01-13-2012 11:58 AM
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