1. How to make sure the calibration is performed successfully?
Use a well-balanced calibration wheel. After calibration leave the wheel on, run the wheel in Dynamic mode several times, and apply random weight both inside and outside. Check if the machine show the weight and if the weight is always at 6 o'clock position. (Please contact us if you need operation video)
2. For wheel balancer, what are the common causes of chasing weight problem?
The wheel is not centered properly so it wobbles during rotation which cause chasing weight.
The weight is not placed in correct position in Alu mode, especially on the inner plane.
Lost accuracy and require calibration.
3. For wheel balancer, what are the difference between static imbalance and dynamic imbalance?
A static imbalance exists when the tire has a heavy part. The dynamic imbalance is different. A dynamic imbalance exists when a tire has two heavy parts which are located diagonally. 4. 4.What are the common test programs inside wheel balancer software? 
Common tests are: piezoelectric sensor test, Encoder test, Distance/Diameter/Width measurement sensor test, keyboard test, display test, motor test (Please contact us if you have more questions on this topic)
5. What are common problem when using motorcycle adaptor? 
The common problem with motorcycle/adaptor is the shaft strength. With heavy or big wheel, the thin shaft jumps during rotation, which cause a bad balancing result. (Please contact us if you have more questions on this topic)