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Corner Balancing With Proform Digital Scales - Scale Your Car

Corner Weights Are Not Just For Race Cars Anymore. If You Are Serious About Going Fast, We'll Show You How Easy It Is To...

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TEST THREE
Weight on center Weight in Left Rear Weight in Right Rear
LF RF LF RF LF RF
990 866 988 851 971 870
(28.2%) (24.6%) (28.1%) (24.2%) (27.6%) (24.7%)
LR RR LR RR LR RR
823 837 846 831 818 857
(23.4%) (23.8%) (24.1%) (23.6%) (23.3%) (24.4%)
Total: 3,516
Front/Rear: 52.8%/47.2% Front/Rear: 52.3%/47.7% Front/Rear: 52.3%/47.7%
Left side: 51.6% Left side: 52.2% Left side: 50.9%
Right side: 48.4% Right side: 47.8% Right side: 49.1%

This was an interesting test because 45 pounds increased the total rear weight distribution percentage from 46.5 percent with the battery in the rear to just over 47 percent. And when the weight was moved to the right side alongside the battery, the right-rear weight jumped to 24.4 percent, which is 44 pounds of additional downforce over the right-rear tire. If we calculate cross weight in this final configuration, the LF/RR comes in at 52 percent, while the RF/LR direction is 48 percent. Increasing the load on the right rear may not be worth carrying the extra weight unless the car has traction problems. Remember that under acceleration, the rear axle attempts to lift the right-rear tire off the pavement. Additional weight on this corner (in addition to the battery) may improve acceleration despite the weight penalty. In addition, there may be handling issues here because the cross weight difference is 140 pounds, which is significant.

PARTS LIST
DESCRIPTION PN SOURCE PRICE
Craftsman Laser Trac LM013N Sears $34.99
Speedway scale levelers 91082650 Speedway Motors 24.99
Proform digital scales 67650 Summit Racing 729.95
Proform wireless scales 67651 Summit Racing 1,097.99

SOURCES
Sears Craftsman
Hoffman Estates
IL
800-377-7414
www.sears.com/craftsman
Proform Parts
Roseville
MI
800-521-1005
www.proformparts.com
Speedway Motors
340 Victory Lane
Lincoln
ME  68528
800-979-0122
http://www.speedwaymotors.com
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