How does the Staun Internal Dual Bead Lock work?
A Staun Internal Dual Pneumatic Bead Lock divides the tires air chamber into two compartments (look inside) through two valve stems. The bead lock portion is inflated to 50 PSI and forces the tire beads against the rim and holds them tightly together. On a 15 inch rim, we calculate that there is over 4,523 pounds of force holding the beads against the rim! This is in addition to the force required to pop the beads over the rims bead bumps. Through another special valve stem, the balance of the tire can be inflated or deflated to any pressure less than 45 PSI.
