Lateral-g Forums
Page 112 of 136 « First 1262102110111 112 113114122 Last »
Show 40 post(s) from this thread on one page

Lateral-g Forums (https://www.lateral-g.net/forums/index.php)
-   Race Cars and Modern Pro-Street (https://www.lateral-g.net/forums/forumdisplay.php?f=57)
-   -   Budget '69 Camaro Track Car - NO WHINERS! (https://www.lateral-g.net/forums/showthread.php?t=34130)

Damn True 05-22-2014 08:38 PM
Quote:
Originally Posted by Track Junky (Post 552013)
Not looking forward to breaking these tires in. According to Hoosier you need to run 3-5 more lbs of air, run approx. 7-8 laps trying to get the most heat in them on the last couple laps then let them cool.
I figure I'll start out at 34 lbs cold which should take me to 40 lbs hot. Then when I bring the car in I'll put all four up on jack stands and let cool.
Should be interesting.

Tire rack will heat cycle them for you. It's not expensive and you know they were brought to the correct temp for the correct amount of time.

GregWeld 05-22-2014 09:10 PM
Quote:
Originally Posted by Damn True (Post 552036)
Tire rack will heat cycle them for you. It's not expensive and you know they were brought to the correct temp for the correct amount of time.



Damn -- This IS "BUDGET TRACK CAR" thread.... you think he's going to pay $60 for 4 heat cycled tires???



Sutton told me that even though I do that -- I still have to bring them up to temp slowly... so of course I went straight out onto the track and ran like my second fastest lap. When I came back in - I got scolded a little... LOL

Track Junky 05-22-2014 09:12 PM
Quote:
Originally Posted by GregWeld (Post 552025)
I have no idea what you should be running -- hot or cold!


I know I'm running a far smaller tire (245) and we're running 29.5 rear and 31.5 front.... on the Mustang
Typically I hover around 34-36 lbs hot on the 100 tread wear. I've had conversation with the guys running slicks and they tell me they start out at about 28 cold. I know I'll get some input from the NASA boys when I get there so I'll wait and see what they recommend.

Quote:
Originally Posted by Damn True (Post 552036)
Tire rack will heat cycle them for you. It's not expensive and you know they were brought to the correct temp for the correct amount of time.
True, I remember that option but this time around I didn't see it or I would have gone that route. Don't know, maybe I missed it.

GregWeld 05-22-2014 09:24 PM
G -- I was running 28 rear and 29 front COLD --- but that wasn't enough... they were colder in the middle of the tire than they needed to be...


SO that's where the temp probe came into play -- and it told us where we should be.

Track Junky 05-22-2014 09:29 PM
Quote:
Originally Posted by GregWeld (Post 552047)
G -- I was running 28 rear and 29 front COLD --- but that wasn't enough... they were colder in the middle of the tire than they needed to be...


SO that's where the temp probe came into play -- and it told us where we should be.
Thanks Greg. That gives me a bit more insight and reminds me that I need to drop by Sonoma tomorrow to pick up a tire temp probe.

Sieg 05-22-2014 09:31 PM
Quote:
Originally Posted by GregWeld (Post 552041)
When I came back in - I got scolded a little... LOL
..........and his helmet was a little tough to get on the next session. :slingshot:

GregWeld 05-22-2014 09:39 PM
Quote:
Originally Posted by Track Junky (Post 552051)
Thanks Greg. That gives me a bit more insight and reminds me that I need to drop by Sonoma tomorrow to pick up a tire temp probe.


Pick up a Durometer while you're at it -- it's the only way you'll know when these tires are shot.

Don't think you had showed up yet -- but on Saturday I was describing a weird "set" the car was taking in the turns... kind of porpoising... and Ron starts with his magic tricks --- next thing he's telling me the right front is hard... the other three were fine -- But I changed all of them. BINGO the porpoising was gone! The hard tire was losing traction - 'causing the weirdo dance the car was doing. WHO KNEW!

Ron knew dat's who knew... His durometer told him all he needed to know.

The Hoosiers are toast when they hit 56... even though they were fairly new and looked fine!

Sieg 05-22-2014 10:06 PM
The tire durometer & pyrometer, pressure gauge, and infrared thermometer are invaluable tuning tools. Data delivers solutions!

Vince@Meanstreets 05-22-2014 10:17 PM
data gives you a direction. Can't get to optimum without knowing where you are starting.

Track Junky 05-23-2014 07:14 AM
Quote:
Originally Posted by GregWeld (Post 552056)
Pick up a Durometer while you're at it -- it's the only way you'll know when these tires are shot.

Don't think you had showed up yet -- but on Saturday I was describing a weird "set" the car was taking in the turns... kind of porpoising... and Ron starts with his magic tricks --- next thing he's telling me the right front is hard... the other three were fine -- But I changed all of them. BINGO the porpoising was gone! The hard tire was losing traction - 'causing the weirdo dance the car was doing. WHO KNEW!

Ron knew dat's who knew... His durometer told him all he needed to know.

The Hoosiers are toast when they hit 56... even though they were fairly new and looked fine!
I remember the story about the durometer. Have to see if I can find one in time. Last I heard Hoosiers are good for about 10 heat cycles. Not sure how to take that info because to me it sounds like 10 sessions.


All times are GMT -7. The time now is 01:13 AM.
Page 112 of 136 « First 1262102110111 112 113114122 Last »
Show 40 post(s) from this thread on one page

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
Copyright Lateral-g.net