sekitori wrote:Occasionally, I will feel a very slight bump on the rail. I'm not sure of the cause but stopping for a few seconds, applying a little Windex, moving the seat back and forth, and
Excellent comments by Ripples on good housekeeping! In addition to the notorious black gunk, broken ends of human hair, the large diameter guard hairs of domestic pets, and hard particles of silica and similar mineral sands are common rail and roller contaminants.
If your rail is free of wax and skin oils, sloughed skin particles, and misapplied lubes and water dispersants, which it should be for those who have ears to hear the gospel of water or water mixed with surfactant or ammonia (Windex or Original Windex), a stray hair that lands on the rail and drives you crazy as the roller passes over it can often be swept away with the palm of the hand only without even stopping.
Mineral sand Is less easy to deal with imo as it will embed in the rollers and is not usually easy to remove. Best answer here is prevention which can mean a dedicated pair of shoes which are kept near the rower or in the heel clips at all times or, as a minimum precaution, never worn for outdoor lawn and garden chores, shopping trips or even a walk to the mailbox or the soles cleaned thoroughly after one forgets to take the previous precautions.