Wheel Stabilizer in truing robot.
We introduced the internal stabilizer module in our Obelisk truing machines in 1996. This set-up allows stabilizing without extra handling. The result is high quality wheels and increased lifetime stability. In the machine can be selected how many stabilizing rounds are used for the different produced wheels.
Typical for rear wheels two stabilizing rounds are used. The time to true a rear wheel including two stabilizing rounds to 0.2 mm hop and side is about 85 seconds using standard material.
In the machine the force is applied from both sides, simultaneous, force closed to the spokes in the direction of hub. In this way there is no load on the hub. This force sets the spoke elbows in the flange holes of the hub and the nipples in the rim.
Definition of stabilizing: To apply an external force to the wheel and so set all assembled parts to “rest” position. This can be reached after riding the wheel for a longer period of time.
The special design of the pressure blocks takes care there is no permanent deformation in the spokes as with other stabilization systems is the case.
In the case a wheel has not been factory stabilized, it can result in an untrue wheel or early failure of the wheel.
In old style systems wheels are stabilized before a minimum torque is applied to all the spokes. The effect of stabilizing is therefore minimal if any. Additionally this separate machine will requires more investment, floor space and maintenance.
Process sequence. First an equal minimum torque is set to all nipples. Than the wheel is stabilized. This sequence can be repeated several times. The final step in the process is the actual truing of the wheel. This within the customer’s desired tolerances for wobble and hop.
When using the BMD stabilizer the wheel remains positioned in the machine. No additional handling is needed. Software makes it possible to opt for stabilization or no stabilization. Selectable for each production of wheels and the number of stabilizing rounds used.