Ride Height - Part 3
There are two ways to achieve the proper cross weight and maintain the ride height we want. One way is to arbitrarily turn the weight jack bolts and then check to see what the ride height is. Unless you happen to hit it just right, this method is very time consuming and wears on your patience.
A better method is to determine how much your cross weight needs to be changed and turn each weight jack bolt until the proper weight is achieved.
Our example vehicle weighs 2800 lbs. with the left side weight at 56% and the rear weight at 52% and the cross weight at 51%. This is what the wheel weights would be.
Now we determine that we want the cross weight to be 57% instead of 51%. Let's calculate how much change we need. We first determine how much cross weight we have. 51% of 2800 lbs. is [ .51 x 2800] 1428 lbs. We now find out how much cross weight we want. [ .57 x 2800] 1596 lbs. We then subtract how much cross weight we want [1596 lbs.] from how much we have [1428 lbs.] and determine that we need to add [1596 - 1428] 168 lbs. cross weight. We take that number and divide it by 8 and end up with [168 ÷ 8] 21 lbs. This number, 21 lbs., is how much we need to change each wheel weight.
When 21 lbs. is removed from the left front wheel weight by turning the weight jack bolt [742 - 21 = 721] (we want to add cross weight so we need to take away from the left front wheel and the right rear wheel) then the scales should read:
Now add 21 lbs. to the left rear wheel weight with the weight jack bolt [847 + 21 = 868] and the scales should read:
Now add 21 lbs. to the right front wheel weight with the weight jack bolt [644 + 21 = 665] and the scales should read:
Now remove 21 lbs. from the right rear wheel weight with the weight jack bolt [567 - 21 = 546] and the scales should read:
It's that easy. Make sure to check your ride heights afterwards in case the chassis lacks rigidity and flexes. Also remember that if you want to take cross weight out of the chassis subtract from the left rear and right front wheel weights and add to the left front and right rear wheel weights.
We hope that makes things easier for you. Remember to set your ride heights first by either the manufacturers specifications or your front suspension geometry and then set your cross weight.
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