Use a cloth measuring tape (not a steel one) and wrap it around the outside of the belt. You also use a thin string to take this measurement and place it on a steel tape to get the correct length. Next, for “A” Belts (1/2” width) subtract two-inches from the outside measurement to select the correct V-belt.Click to see full answer. Beside this, are V belts measured inside or outside?2. Inside Belt Lengths: The inside length is measured with flat pulleys or a tape measure. As with the outside length, the inside length varies with the manufacturer. This length should not be used.Similarly, how do you measure pulleys? Place your pulley face down on a flat surface, then put your ruler or caliper on top, measure from outside edge to outside edge across the circle of the pulley. Check carefully to make sure you are measuring across the center. Consequently, what are the different types of V belts? The V-belts are basically classified into five types or sections i.e. ‘A’, ‘B’, ‘C’, ‘D’ and ‘E’. The categorization of this is based on the cross sectional size of the belt and the amount of power to be transmitted by the belt. The dimensions of various sections of the V-belts are shown in the below diagram.How do you store your V belts? Proper Storage of Belts V-belts should be stored in a cool, dry environment with no direct sunlight. When stacked on shelves, the stacks should be small enough to avoid excess weight on the bottom belts which may cause distortion.