Kistler is the leader in wheel force measurements systems. The RoaDyn S635 measure forces and torques along all three major axes. Sensor data is digitized at the wheel and sent via telemetry, increasing accuracy and minimizing noise.

The RoaDyn S635 measuring wheel has a modular, highly-versatile design for mounting on different hubs and rim geometries. Five individual load cells are connected by adapter parts to a rim and to the vehicle hub. 

The signals are amplified immediately in the load cells and fed via short cables to the wheel electronics. Here they are filtered, digitized, and coded. The data stream is transmitted via a rotor/stator pair to the wheel inner side, transformed in the on-board electronic unit and output to a data acquisition device.   For more information on the RoaDyn S635, please refer to this PDF file available from Kistler.