Where rust attacks first
Damp autumn accelerates corrosion. The weak points:
- The chain (most exposed, rusts overnight if left wet)
- Steel fasteners (stem, bottle cage mounts, dropouts)
- Spokes and spoke nipples
- Contact points where paint is chipped
Treating a rusty chain Surface rust (light): degreaser + brush, then relube. If the links are stiff or rust is deep, the chain is done for — replace it (and measure wear while you're at it). A rusty chain wears out the cassette.
Treating fasteners and small spots 1. Scrub with fine steel wool (000) or a brass brush. 2. Penetrating oil/rust inhibitor on the area. 3. Wipe down, then protect: grease on the threads, wax or varnish on frame spots.
On a steel frame rust spot (chipped paint): light sand, degrease, touch-up paint + varnish. Never leave bare steel exposed.
