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Author Topic:   cross weight
billy7333
Dirt Newbie

Total posts: 1
posted February 20, 2005 08:10 AM  
hi all i need to get 51% cross weight in my car but am unclear on what corners this is. my left side and right, back is all good so how do i figure cross? thanks

rocket36
Dirt Freak

Total posts: 209
posted February 20, 2005 12:33 PM  
cross weight is the percentage of the cars total weight supported by the left rear & right front wheels. this is usually adjusted by the nuts on the coil overs. screwing the nut towards the spring increases the weight held on that wheel.
adjusting your cross weight this way will not change your left side or rear percentages. these can only be altered by physically moving mass within the vehicle (ballast, fuel cell, battery etc.).

alot of racers, particularly dirt guys, will refer to thier cross % as pounds of wedge. this is simply how much more weight the left rear is holding compared to the right rear.
eg. 100lbs wedge means the left rear is holding up 100lbs more than the right rear tire.

hope that helps.

Ego Racing
Dirt Forum Champ
Total posts: 724
posted February 20, 2005 04:55 PM  
quote:
Originally posted by rocket36:
cross weight is the percentage of the cars total weight supported by the left rear & right front wheels. this is usually adjusted by the nuts on the coil overs. screwing the nut towards the spring increases the weight held on that wheel.
adjusting your cross weight this way will not change your left side or rear percentages. these can only be altered by physically moving mass within the vehicle (ballast, fuel cell, battery etc.).

alot of racers, particularly dirt guys, will refer to thier cross % as pounds of wedge. this is simply how much more weight the left rear is holding compared to the right rear.
eg. 100lbs wedge means the left rear is holding up 100lbs more than the right rear tire.

hope that helps.



Everything is correct except for your last statement. We run 51-53% wedge and very the bite (Lbs of weight between left rear and right rear) But we adjust the bite and adjust to keep the cross the same. They are not the same thing.


Ells949
Dirt Full Roller

Total posts: 28
posted February 22, 2005 12:42 AM  
quote:
Originally posted by Ego Racing:
[QUOTE]Originally posted by rocket36:
[b]cross weight is the percentage of the cars total weight supported by the left rear & right front wheels. this is usually adjusted by the nuts on the coil overs. screwing the nut towards the spring increases the weight held on that wheel.
adjusting your cross weight this way will not change your left side or rear percentages. these can only be altered by physically moving mass within the vehicle (ballast, fuel cell, battery etc.).

alot of racers, particularly dirt guys, will refer to thier cross % as pounds of wedge. this is simply how much more weight the left rear is holding compared to the right rear.
eg. 100lbs wedge means the left rear is holding up 100lbs more than the right rear tire.

hope that helps.



Everything is correct except for your last statement. We run 51-53% wedge and very the bite (Lbs of weight between left rear and right rear) But we adjust the bite and adjust to keep the cross the same. They are not the same thing.

[/B][/QUOTE]
Ego. can you explain how you can change bite and keep the cross the same?

wfoondirt
Dirt Forum Champ
Total posts: 505
posted February 22, 2005 11:26 AM  
physically moving weight

GO 24
Dirt Freak

Total posts: 366
posted February 22, 2005 12:34 PM  
billy7333-go 2 rounds into the lr, 2 rounds out of the rr, 1 round into the rf, and 1 round out of the lf. Depending on your total weight it'll likely add 1 to 1.5% cross, your left & rear will stay the same as well as your ride heights. DO it again if you need to BUT always remember LR/RF in RR/LF out to add cross and exactly the opposite to take cross out.


dirtdoc
Dirt Roller

Total posts: 8
posted March 20, 2005 07:06 AM  
billy ride height has a lot to do with keeping your percentages right make sure your height is right then check your %s after each adjustment you make !!

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