S2000 STR prep resource

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Jan 9, 2011 | 08:22 PM

#3191

Random1

Joined: May 2004

Posts: 1,531

Likes: 3

From: Tucson

I have had similar experience where once at temp a quick water spray is all that is needed to keep the temperature from running away. This assumes two drivers and hot summer day here in Arizona. We spray the entire tread when it's that hot out (95F +). Infrared pyrometer is used. Lower air/pavement temperatures require less and below 70F tire insulators are desired to keep heat in them.

Jan 9, 2011 | 08:32 PM

#3192

762

Registered User

Joined: Apr 2009

Posts: 369

Likes: 0

That's what I found best for the Texas heat as well.

Jan 10, 2011 | 02:35 AM

#3193

PilotSH

Joined: Aug 2002

Posts: 730

Likes: 0

From: Honda HQ

Quote:

Originally Posted by Ken Motonishi,Jan 9 2011, 01:13 AM

Every pound counts, even that of the driver....

Damn you Moto Baggins, we can't all be Hobbits like you.

Jan 10, 2011 | 03:53 AM

#3194

bronxbomber252

Joined: Mar 2009

Posts: 1,865

Likes: 38

Quote:

Originally Posted by PilotSH,Jan 10 2011, 03:35 AM

Damn you Moto Baggins, we can't all be Hobbits like you.

with me being at 6'1" 225lbs... this comment just made my day!

Jan 10, 2011 | 05:43 AM

#3195

robinson

Registered User

Joined: Nov 2003

Posts: 2,141

Likes: 1

From: AZ

I've lost 15 lbs since Nats. That's worth at least $500!

Jan 10, 2011 | 06:07 AM

#3196

TheNick

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Joined: Jun 2008

Posts: 1,024

Likes: 1

Quote:

Originally Posted by josh7owens,Jan 9 2011, 03:58 PM

What I've learned about the kooks, if you get them over 135-40 they are slower then if they are in the 120-130 range. What works best for me is to get them up to 135-40 and spray just the outside edge of the tire with water, nothing else. It keeps the heat in the center of the tire cools down the outside edge to help with keeping maxium grip and not breaking away abruptly. If the outside edge of the kooks get to hot they wont hold in a high g situation as well. It's kind of like... grip, grip, grip, gone. Not much warming compared to a kook with alittle cooler outside edge. The big reason to have a co-driver is to quickly get them in the 120-130 range and keep them in that range. I went to events last year without a co-driver and had time that the tire wouldn't even reach 120-130.

This is my exact experience as well. Josh, thats a good description of how they feel - I think part of our problem is that we aren't running nearly enough camber - we ran 2.8 last year and still tore the crap out of the outside edge of the tires at Lincoln - thats why we stepped it up to 3.0 for Blytheville and might go higher this year if we continue to run Kooks. Toyo's don't need nearly as much camber in my experience.

Spraying the tires when >140deg does definitely bring the times down.

My temps are with a probe type in grid about 30-45sec after a run.

Jan 10, 2011 | 07:47 AM

#3197

alvanderp

Registered User

Joined: Sep 2004

Posts: 380

Likes: 0

From: Austin, TX

Quote:

Originally Posted by TheNick,Jan 10 2011, 07:07 AM

Spraying the tires when >140deg does definitely bring the times down.

I agree - and they tend to be good from cold as long as the ambients aren't "winter-ish"(i.e. below 50 degrees). I still prefer the grip after they've had a run to warm up, but you definitely need to keep an eye on them as they heat up.

Jan 10, 2011 | 10:37 AM

#3198

ViperASR

Joined: Jul 2009

Posts: 2,048

Likes: 1

Quote:

Originally Posted by robinson,Jan 10 2011, 09:43 AM

I've lost 15 lbs since Nats. That's worth at least $500!

I weigh <150lbs. I'm priceless

Jan 10, 2011 | 10:46 AM

#3199

josh7owens

Registered User

Joined: Jun 2009

Posts: 4,340

Likes: 0

From: Frankfort, KY

Quote:

Originally Posted by ViperASR,Jan 10 2011, 02:37 PM

I weigh <160lbs. I'm priceless

Jan 10, 2011 | 12:53 PM

#3200

User 121020

Registered User

Joined: Jul 2007

Posts: 1,376

Likes: 2

Quote:

Originally Posted by ViperASR,Jan 10 2011, 01:37 PM

I weigh <150lbs. I'm priceless

Awesome quote.

I'm hoping to get down to <140 lbs by Nats, if I drive a car. If I drive my kart, I'm hoping to gain about 30 lbs just to make weight.

I had to wear 30 lbs of lead last year because my co-driver was heavier than I was.