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Author Topic:   Could this be why i can't get enough crossweight?
CrazyT
Dirt Forum Racer

Total posts: 79
posted August 11, 2004 07:30 PM  
I set my car on jack stands tonight and got to measuring on the frame with the jacks all the same height and place the same on each side. I found from the center of the bolt on the upper control arm on the right rear is 1/2 an inch lower than the other side. I have all the ride heights within specs and 240 pounds in the LR and still only get 46%cross. LF6.25 RF7.25 LR7.25 RR8.00 ride heights
Thanks Tim

jammin
Dirt Administrator

Total posts: 6243
posted August 11, 2004 07:51 PM  
It is a 79 monte carlo coil spring car.

cd2
Dirt Maniac

Total posts: 161
posted August 12, 2004 08:00 PM  
CrazyT check your personal mail. cd2

racer17j
Dirt Forum Champ
Total posts: 5390
posted August 12, 2004 09:14 PM  
put a 1/4 " shim under rf and it will give you more cross if not enough add until you get the disered cross

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if every thing is under control your not fast enough

20bmw
Dirt Full Roller

Total posts: 74
posted August 18, 2004 08:39 PM  
I have my lr spring spacer 1" taller than the rr. Allways rember that to get more cross weight you need to bring up either the lr or rf by putting in spring shims.

Adding weight will only give you left and rear % and not cross %

try to make your adj. when the car is on the scales and only do one thing at a time and make sure you write down what changes you made and the changes it made to the car.
that way you are not making the same changes over and over..

mechanist
Dirt Full Roller

Total posts: 33
posted August 24, 2004 11:35 PM  
if you need more rear weight percentage, put spacers under the right front to raise your cross percentage. I find if I get carried away with rear spacers, the rear weight percentage changes a lot (drops). I'm trying to do the front spacer changes at the shop, and save the rear adjustments for the track as they are easiest done.
Lowering your right rear will help too, as it's higher, and adding stagger takes out crossweight, so you have to allow for that with stagger changes as well. It's easy to blow your crossweight with a quick stagger change at the track. btdt...

CLBaker25
Dirt Maniac

Total posts: 193
posted August 28, 2004 01:42 PM  
How much left side weight do you have in the car? If you have 240 pounds of bite and only have 46% cross your left front has to be carrying a ton of weight. Can you take some left side out of the car by using different spacer? What handling problem are you trying to fix? I am assuming that your car doesn't have enough forward bite.

corey

CrazyT
Dirt Forum Racer

Total posts: 79
posted August 29, 2004 04:02 PM  
OK i pushed the right rear up about an inch. And the car looks a lot better on the scales. Before i straightened the frame... LF1010 RF748 LR850 RR860 not full of gas. Now the numbers are LF982 RF727 LR940 RR834 full of gas. We run imca tires american racer g-60, and i got the brilliant idea in the heat race to put radials on the back and the g-60 on the front because it was so muddy....the **** thing pushed like a dump truck. So in the feature i put the g-60 back on and moved some weight up high on the RR and the car seemed to handle descent but the clutch started slipping really bad and was a hand full by the end of the feature. Still held on the 6th and wrapped up the point championship. All year the car has been good on corner entry and sucked coming off the corner, the whole car slides up the track and spins. Now the frame is better and i just replaced the clutch so maybe it will come off the corner better now.

    

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