.

Considering this, does a bigger pulley increase speed?

Pulleys and Speed Alternatively, a larger pulley turning a smaller pulley results in the smaller one turning faster but with less shaft power. For example, a truck in high gear would have a more slowly turning engine but fast turning wheels, resulting in greater speed of the truck.

Subsequently, question is, how do variable speed pulleys work? A Variable Speed Pulley is a device for changing the speed of a rotating shaft member, so that it will increase or decrease the revolutions per minute of that particular shaft. The belt used in the pulley has a 'V' cross section, where the sides of the 'V' conform to the angular faces of the pulley flanges.

Also question is, can you over tighten a tensioner pulley?

If you can turn it more than a 1/2 turn, you do not have enough tension on the belt. If you cannot turn it a 1/2 turn, you have too much tension on the belt. Over-tightened belts can cause internal damage to the bearings inside the pulleys. It can also cause overheating of the belts and premature wear.

How can I speed up my pulley?

To increase blower speed, slightly loosen the setscrew that holds the pulley to the driveshaft. Move or turn the pulley clockwise on the shaft one turn, then tighten setscrew. If more speed is desired, turn the pulley clockwise two turns.