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wtf is my car doing?

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Old Dec 31, 2007 | 04:50 PM
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Default wtf is my car doing?

i dont know how relevant this is but im trying to get this stuff down so i understand. watch my raer tire. it looks as though it hops. there was no wheel hop vibration in the car at all but i could tell right away it was spinning.
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Old Dec 31, 2007 | 04:51 PM
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if anyone knows how to slow down that video feel free as i have no clue.
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Old Dec 31, 2007 | 04:57 PM
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Looks to me like you need to put some air in your rear tires. When the weight is transferred to the back of the car it looks like the tire is almost completely flat for a split second.
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Old Dec 31, 2007 | 05:21 PM
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Originally Posted by BAKED
Looks to me like you need to put some air in your rear tires. When the weight is transferred to the back of the car it looks like the tire is almost completely flat for a split second.
they were at 17psi. rear shocks at 6 fronts at 3.
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Old Dec 31, 2007 | 05:35 PM
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If you keep clicking the play/pause button really fast it slows the video down enough to where you can see that the wheel is damn near touching the ground. Either that or i'm hallucinating. (which has happened once or twice before LOL)
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Old Dec 31, 2007 | 05:40 PM
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Do you have a view from the other side? Looks like low air pressure.
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Old Dec 31, 2007 | 05:45 PM
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Originally Posted by Steve Burger
Do you have a view from the other side? Looks like low air pressure.
no thats all i have. only got one pass as it bent all the rear wheel studs.
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Old Dec 31, 2007 | 05:47 PM
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theres no way that 17 psi is too low on an et drag. maybe they tried to hook then let go and thats when the tire popped back up? it did spin thru all of first.
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Old Dec 31, 2007 | 05:56 PM
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You have stock wheel studs in your Dana 60? That's like having a huge set of ***** but a little bitty dick.
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Old Dec 31, 2007 | 06:39 PM
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Your hitting the tires to hard. Its shocking the hell out of the tires, bouncing, and spinning. Do you have lower control arm relocation brackets?
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Old Dec 31, 2007 | 07:08 PM
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yes it has bmr adj. lower control arms and bmr relocation brackets in the lower hole. (car is lowered the lca is almost parralel with the ground)

and no it has moser 3" long 1/2" studs. going to switch to arp this time around.
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Old Dec 31, 2007 | 07:08 PM
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Does it do that on every launch or was just this day, or this launch? I had the exact same launch, hit the tires hard and then they hopped back up and I blew em off. Took the shocks to 7 in back and 1 in front if remeber correctly. Helped a bit but I can't launch it over 5k or so at that particular track with any setting. seems the shocks need to be dialed in for the conditions...

Also, I run 28x11.5 Streets at 17 psi

Good luck, as for me - going with ET Drags this year...
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Old Dec 31, 2007 | 07:21 PM
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are the rims spinning on the tire? that would create the shake you see, esepcially if you arent running tubes, if i remember correctly
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Old Dec 31, 2007 | 08:02 PM
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you need to stiffen the rear shocks or make more power as the tire is bogging down the motor.
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Old Jan 1, 2008 | 07:16 PM
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i only had one pass due to the damage that ensued. the rim did spin inside the tire some. 2 step was at 6k.
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Old Jan 1, 2008 | 07:26 PM
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It looks like the tires are spining on the rim, if they aren't screwed to the rim do that, the car also looks like it is hitting the tire then bogging badly and not getting up on the tire like it needs to.

You're having typical problems that stock cars have from what I have seen..... god damn I don't miss that ****.
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Old Jan 1, 2008 | 07:31 PM
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you need to get the wheel speed up. this causes wheel hop. i bet it wont happen on the nitrous.
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Old Jan 1, 2008 | 09:02 PM
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Originally Posted by JL ws-6
It looks like the tires are spining on the rim, if they aren't screwed to the rim do that, the car also looks like it is hitting the tire then bogging badly and not getting up on the tire like it needs to.

You're having typical problems that stock cars have from what I have seen..... god damn I don't miss that ****.

the sob isnt stock thats what sucks about it! haha.i dont see how to get the wheel speed up. im already launching at 6k w/ 17 psi in the tires. i will screw the tires into the rims. my 28's are but these arent. my car is a heavy turd but it doesnt seem like it should be having this many issues for a fairly simple set up.
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Old Jan 2, 2008 | 01:25 AM
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your driving the tire into the ground tighten extension in the rear shock to it's hardest setting.

Last edited by 632bbc; Jan 2, 2008 at 01:34 AM.
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Old Jan 2, 2008 | 03:22 AM
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Originally Posted by 632bbc
your driving the tire into the ground tighten extension in the rear shock to it's hardest setting.
I agree! You are crushing the tire to the ground. I used to have to run my QA-1s at 9-10 in the rear to keep it from crushing the rear tires.

There is likely some other areas to improve the launch, but this looks to be the primary issue.

Good luck!
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