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Author Topic:   Sudden tight/loose
monteregal7
Dirt Maniac

Total posts: 126
posted April 11, 2005 06:36 PM  
First half of the race the works great. Second half the car gets wild. Could I be building to much tire pressure. 16 RF, 14 RR, 13 LR, 11 LF. 3150 lbs Street stock class.

Eljojo
Dirt Forum Champ
Total posts: 968
posted April 11, 2005 07:49 PM  
Rog, Tire temps will tell you more than anything. Judging from the title of your thread, I'd guess that you are running too much wedge, overheating the tires and getting bad loose during the last half. How are your tire temps?

sjakes
Dirt Freak

Total posts: 254
posted April 12, 2005 05:27 AM  
What is your car scaled out at?

pdub25
Dirt Full Roller

Total posts: 57
posted April 12, 2005 06:19 AM  
Sounds to me like you have a bad shock.

AtomicPunk
Dirt Maniac

Total posts: 130
posted April 12, 2005 08:59 AM  
Could be like Eljojo says OR maybe the track goes dry-slick on you and you're not set up for that?

Edit: typo

[This message has been edited by AtomicPunk (edited April 12, 2005).]

iowa_dirt_track_girl
Dirt Freak

Total posts: 461
posted April 12, 2005 10:10 AM  
Sounds to me that you are burning fuel off (taking weight off the A$$ end)and the car is getting loose that way.

monteregal7
Dirt Maniac

Total posts: 126
posted April 12, 2005 04:00 PM  
This condition happened in both the heat and the feature. Around half way the car just went away. Like something broke. When we started the feature car was great and then like someone flipped a switch, BAM out of control. This time I went to the bottom and the car was good there. Another thought I had is that the RR may be rolling over on the rubber stop.
I think Eljojo is on the right track. I have a temp gauge. I'll check next week. Thought too of dropping the rear pressure down another pound. This track is only 1/5 mile high bank. We get around the track in 13.50 seconds.

ryan
Dirt Forum Champ
Total posts: 776
posted April 12, 2005 07:51 PM  
Shocks fading??

11mt40
Dirt Full Roller

Total posts: 53
posted April 12, 2005 07:59 PM  
I would lean more toward tires getting hot and fading out on you. It could be a shock but it seems more like tires. What are you scaling numbers??

monteregal7
Dirt Maniac

Total posts: 126
posted April 13, 2005 06:47 PM  
Thanks to all in helping. Your help means a lot. Sometimes I ask for with no replies. So a BIG THANK YOU to all. Let's see what happens this coming weekend.

shifty8
Dirt Maniac

Total posts: 123
posted April 13, 2005 08:06 PM  
my buddy had the same problem 2 years ago at first we thought shocks but i told him if there wasa yellow to hit the high side and get the cold mud and it worked the temps came down in the tires and the car started to work again so we fixed the problem by lowering the air pressure and it worked great after that

Racer0
Dirt Maniac

Total posts: 149
posted April 14, 2005 06:15 AM  
What compound are you running? If you got the soft hoosiers they could be getting slippery when they get to hot. Macon is no place to have a car that is out of control. :-) good luck...

monteregal7
Dirt Maniac

Total posts: 126
posted April 14, 2005 03:49 PM  
e-mod A-40 on RR, LR, and RF. D-40 on LF
Our features are only 12 laps.

shifty8
Dirt Maniac

Total posts: 123
posted April 14, 2005 06:27 PM  
them r the same tire we run. can u use any other compunds?? if not try droping air pressure a touch but just watch that u dont get to much roll over on the sidewall.

[This message has been edited by shifty8 (edited April 14, 2005).]

bobaluuu
Dirt Freak

Total posts: 474
posted April 14, 2005 08:07 PM  
am I the only one to wonder how you get that much tire heat, to cause such a drastic change,only half way thru the heat. if it were the main only I'd buy that. I'd like to try this thought, maybe the car is finally getting stretched out at that point as is the running order and the driver is pushing the car harder, as in overdriving.
I see fellas do that at our track all the time and fall further back even though they
are trying harder than ever. please dont get offended there driver this is only speculation. tryto get the track to allow some practice laps after the show is over one night and get someone else to drive the car and see what happens. We run a soft hoozier dirtbozz on a fairly dry track and I notice that I have to slow up a bit late in the race to keep my lap times increasing

------------------
Light it up, Baby!

monteregal7
Dirt Maniac

Total posts: 126
posted April 18, 2005 04:15 PM  
Fixed that problem. RF tire pressure was to low and the RR was bottoming on the rubber stop. Raised the ride height 1/2" and cut 1/2" off the stop. Thanks again guys.

    

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