How can we determine chain sag effectively?

Determining chain sag effectively is essential for ensuring proper chain tension and preventing wear or damage in mechanical systems. The correct approach involves rotating the sprockets forward. This method allows you to observe how the chain engages with the sprockets while effectively replicating the working conditions. When the sprockets are rotated, the chain moves through its functional path, and this movement helps accurately assess if there is an appropriate amount of sag — which is vital for maintaining efficiency in power transmission and minimizing friction.

Using this technique gives a real-time perspective on how the chain behaves under load and helps in understanding if adjustments are necessary to maintain optimal tension.