Stewart talks about Goodyear again

Stewart talks about Goodyear again

There are 28 comments on the Akron Beacon Journal story from Mar 12, 2008, titled Stewart talks about Goodyear again. In it, Akron Beacon Journal reports that:

MARTINSVILLE, VA.: Tony Stewart defended his harsh criticism of the tires Goodyear brought to Atlanta last weekend and said that it was time to speak out after years of closed door meetings failed to produce a ...

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Sportsfan

Cleveland, OH

#23 Mar 13, 2008
The rear shocks on the COT are actually softer, making the car bottom out. A lot of teams have started using bump stops to alleviate this problem. Goodyear has stated that they selected this compound to keep from having any right front failures. They aired to far on the side of caution. I have to laugh how the GY reps that have spoken about this say " well, we used these tires on the trucks and Nationwide cars and everything was fine " ...No S*^t Sherlocks, those two vehicles produce a ton of downforce !

“2XCHAMP”

Since: Dec 06

Indianapolis

#24 Mar 13, 2008
Tony Stewart is an idiot wrote:
It's kind of ironic that the Craftsman truck series ran on the same tires, the Nationwide series ran on the same tires and neither of them have expressed any of these so called concerns. The major difference between the three series....Sprint Cup cars are all the Car of Today(Tomorrow) design. Hmmmmm......seems maybe Chad Knaus hit it right on the head."There are 5 things that hold a car to the ground, 4 are tires, one is downforce. The car of today doesn't have the downforce as in the past. At 180 m.p.h. if you don't have enough downforce I don't care what kind of tire you have, it's gonna slide. It's also ironic that Tony Stewart owns a race track in Indiana that he has a contract with Hoosier tire, he mentioned Hoosier tire during his interview, wonder what kind of money that brought him. Tony Stewart is a crybaby, I'd love to see a bunch of pacifiers thrown at him at the next race. I think that every USW member ought to boycott Home Depot for the deplorable comments this individual has made about Goodyear.It's no wonder kids are the way they are today when you have high profile idiot's like Tony Stewart wanting to blame everybody but himself for the situation he is in or not in (first place). Maybe if Nascar would insist that the teams run the tires exactly how the Goodyear engineers at the track tell them to (Caster, Camber, air pressure...)the tires would perform exactly how they were designed to.
OMG, your blaming the way kids are today on TS.....Id say your the idiot!

“At least I'm housebroken.”

Since: Jun 07

Canton, OH

#26 Mar 13, 2008
Sportsfan wrote:
The rear shocks on the COT are actually softer, making the car bottom out. A lot of teams have started using bump stops to alleviate this problem. Goodyear has stated that they selected this compound to keep from having any right front failures. They aired to far on the side of caution. I have to laugh how the GY reps that have spoken about this say " well, we used these tires on the trucks and Nationwide cars and everything was fine " ...No S*^t Sherlocks, those two vehicles produce a ton of downforce !
Your explanation is not quite right. Bump stops are hard-rubber inserts inserted between the coils on the suspension springs which actually cause the suspension to "bottom out" with less travel than the suspension would without a bump stop installed. All they do is limit the travel of the suspension. If a stock suspension has 4 inches of travel, one with a bump stop installed might only have 3 inches of travel, which means that it "bottoms out" sooner.

If you noticed, a lot of teams at Atlanta were complaining about rough handling. The rougher ride they mentioned is due to the lack of travel left in the suspension and the bump stop causing it to run out of travel. When the coil reaches coil bind, it is out of travel, and they might as well have a go kart, because there's no suspension movement left, as the suspension has essentially become a solid piece.

The trick is to get a bump stop with rubber just stiff enough, that it keeps the coil from binding and allows some suspension travel to take out the bumps, which is what we saw happen at Daytona. The cars at the front were great until they hit a bump, ran out of travel and slid up the track a bit.

With the CoT cars you will see a lot of bent front suspension pieces this year, like Jeff Gordon experienced at Daytona, because teams gamble with coil bind. Unless NASCAR steps in and mandates a higher front spring rate to stop it.
Sportsfan

Cleveland, OH

#27 Mar 13, 2008
Yes, they are inserted in the coils which assist with travel because of the softer shocks. I spent 3 years inserting them over the wall, and do feel like I can explain it correctly.

I am sorry if I didn't explain it the way you would like to see it !

i was trying to give someone a " better ' explanation without going to far into the weeds.
Sportsfan

Cleveland, OH

#28 Mar 13, 2008
Also, you are technically talking about " Coil Rubbers " which are not " bump stops ".

“At least I'm housebroken.”

Since: Jun 07

Canton, OH

#29 Mar 13, 2008
Sportsfan wrote:
Also, you are technically talking about " Coil Rubbers " which are not " bump stops ".
Yes, bump stops are used on the shocks. Coil rubbers are placed in the spring coils. They both serve the same purpose - limiting suspension travel.

“At least I'm housebroken.”

Since: Jun 07

Canton, OH

#30 Mar 13, 2008
The bottom line is that bump stops are forcing tires to play the roles of springs, which can put a lot more force on the tires than they were designed to handle. The bump stops are effectively causing coil binding, and the tires are forced to fill the role the spring should be serving -- absorbing bumps. The problem is that tires are not designed to do this. To fix this, NASCAR needs to get rid of bump stops in the CoT.
DONA

Cookeville, TN

#31 Mar 14, 2008
The Big Lebowski wrote:
The bottom line is that bump stops are forcing tires to play the roles of springs, which can put a lot more force on the tires than they were designed to handle. The bump stops are effectively causing coil binding, and the tires are forced to fill the role the spring should be serving -- absorbing bumps. The problem is that tires are not designed to do this. To fix this, NASCAR needs to get rid of bump stops in the CoT.
I got into being a fan of NASCAR about 8 yrs ago. So I'm still learning. But you explain things so much better and give a better understanding than any of the commentaters that I listen to weekly. Just want to say THANKS. I know now who to ask if and when I have a question. What to you do for a living? It has to be something mechanical.

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