Overhead door decelerators and associated devices, systems, and methods

An overhead door assembly, comprising:

• door;
• an elongated door track configured to movably receive a portion of the door as the door moves between open and closed positions;
• and
• a brush adjacent to the door track, the brush including a resilient portion having a first region and a second region, the second region of the resilient portion having a greater resistance to deflection than the first region of the resilient portion,
• wherein—
• moving the door between the open and closed positions causes the door to deflect the resilient portion, and
• moving the door from the closed position to the open position causes the door to deflect the first region of the resilient portion before deflecting the second region of the resilient portion.

A method for installing a decelerator of an overhead dorr assembly, the method comprising:

• positioning an elongated brush along a door track of an overhead door assembly such that—
• a resilient portion of the brush is out of contact with a door of the overhead door assembly when the door is in a closed position and in contact with the door when the door is in an open position, and
• the door first contacts a tapered portion of the resilient portion when the door moves from the closed position to the open position;
• and
• mounting the brush to the door track.

A method for decelerating an overhead door, the method comprising:

• moving an overhead door along a track from an open position toward a closed position;
• deflecting a first plurality of bristles of a resilient portion of an elongated brush mounted to the track while moving the overhead door from the open position toward the closed position;
• and
• deflecting, after deflecting the first plurality of bristles, a second plurality of bristles of the resilient portion of the elongated brush while moving the overhead door from the open position toward the closed position,
• wherein the second plurality of bristles has a greater average bristle diameter, bristle length, bristle density, bristle stiffness, or combination thereof than the first plurality of bristles.