It is very important that the belt is pre-tensioned correctly for optimal drive function. Tension can be measured with a testing device such as the Sonic Tension Meter. This uses sound waves transmitted by the belt to determine its vibration frequency and then calculates a tension value from this.
As well as correct tensioning, it is important that the pulleys are aligned correctly: this is achieved with a laser-guided alignment system.
Furthermore, various tools such as plate and hinge connectors are available to connect perforated V-belts.