For low to moderate speeds, what is the proper way of tensioning a timing belt?

Timing belts require precise tensioning to ensure optimal performance and longevity. For low to moderate speeds, using hand tensioning or "use feel" is preferred because it allows the technician to manually adjust the tension to achieve a delicate balance. This method relies on the technician's experience to gauge the correct tension by feel, which is particularly effective at lower speeds where the dynamics of the system are less aggressive and the stresses on the belt are more manageable.

When engaging in hand tensioning, it’s essential to maintain a level of tension that prevents slip while avoiding excessive tightness, which can lead to premature wear or damage to the belt and associated components. This method provides better feedback to the technician regarding the feel of the belt's tension and allows for adjustments that may be difficult to gauge with automated methods.

In contrast, while machine tensioning, spring tensioning, and hydraulic tensioning can all be effective in various applications or for different speed ranges, they may not be as suitable for low to moderate speeds. Those methods often introduce predetermined tension levels that can be less adaptable to the nuances of such applications.