The Hows and Whys of Battery Relocation or How Battery Relocation Affects Corner Weight!

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Steve Mitchell
Steve Mitchell  checks readings on the electronic corner scales.

Here is how the stock Hatchi weighed out at each corner.

 Left WeightRight WeightBattery LocationFront to Rear Weight PercentageCross Weight
Front Weight725642Stock left front of engine compartment54/4649.4%
Rear Weight606552   
      

As you can see there is quite a bit of difference between the left and right weights of the car.  The cross weight isn’t bad considering that the car had not been corner balanced. 

Steve Mitchell
The cars suspension was bounced every time the battery was moved in order to get more accurate readings.  Tire binding and suspension bushing sticksion affects the accuracy of readings and bouncing the car helps to settle the suspension.

Now we move the battery to the right side of the trunk

 Left WeightRight WeightBattery LocationFront to Rear Weight PercentageCross Weight
Front Weight668646right rear of trunk52/4850.8%
Rear Weight638575   
      

Now you can see that the weights from the right side of the car to the left are much more equal.  Best of all, the front to rear weight percentage has improved two percent putting the car pretty close to the ideal 50/50 weight distribution.  This is the same affect as setting the engine back around 10 inches!  A two percent difference in weight distribution is easy for a driver to feel.  The corner weights can easily be corrected with some minor adjustments to the coilovers.

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