Determining the exact length of a V belt with a mathematical equation becomes confusing. This holds especially true when measuring the length of a V belt running between two pulleys with different diameters and do not have experience using calibers to measure the diameter of the drive pulleys. Fortunately, you have an alternative to determine the length of a V belt accurately that does not require the use of a complicated mathematical formula or complicated measuring equipment.
Measuring Belt Length with an Old V Belt
Place a mark on the side of an old V belt with a white paint marker.