How it Works...
Step 1: Measure Tire/Wheel Uniformity
The GSP9700 Vibration Control System utilizes Hunter's exclusive Road Force Measurement™ System that applies up to 1400 pounds (635 kg) against the tire assembly to detect non-balance, radial force-related vibration.
Lack of tire uniformity is a common and often hidden cause of wheel vibration. As a tire rolls, it flexes as if it were made of springs. Vibration results when tire stiffness is not uniform.
GSP9700's Inflation Station** provides proper inflation pressure for accurate testing.

 

 
 
Step 2: Measure Rim Runout
The GSP9700 Vibration Control System measures lateral and radial rim runout without removing the tire from the rim and quickly indicates if runout is tire related. Runout can also be measured at the actual bead seat on a bare rim.

The GSP9700 Vibration Control System then calculates the contributions of the tire and the rim to the vibration problem and presents the technician with easy-to-follow repair instructions.

Rim runout can be measured without removing the tire... ...or, directly at the bead seat on a bare rim.

 
Step 3: ForceMatch
and Balance
Hunter's patented ForceMatching™ feature cancels the high point of tire radial force variation with the low spot on the rim. This helps eliminate vibration by minimizing the effects of radial force variation and rim runout.

Once the repair is completed, the technician can continue with a precision wheel balance by choosing one of four balancing methods.

Matching the stiff or high spot on the tire with the low spot on the rim cancels vibration caused by radial force variation and provides the smoothest ride.
Benefits of the GSP9700's Diagnostic Repair Capability
Solves Vibration Problems Balancers Won't Fix Dramatically Improves Ride Quality & Customer Satisfaction Faster Troubleshooting & Repair  
Detects non-balance, radial force-related problems related to:
  • Tire uniformity.
  • Tire and rim runout.
  • Wheel-to-balancer mounting error.
  • Improper bead seating of tire to rim.

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