Fresh guides, tips and fixes from the workshop.
Identify a bike headset: threaded vs threadless, steerer sizes, EC/ZS/IS housings, cartridge bearing standards and how to read a SHIS code.
A worn bike chain is the most expensive thing you can ignore. When chain stretch passes the replacement threshold, it starts grinding…
Reference to Shimano HG length classes, Micro Spline, LINKGLIDE and SRAM XD/XDR freehub bodies: what each takes, spacer rules and how to identify yours.
How to read the ISO marking to size a tube, match Presta, Schrader or Dunlop valves to your rim, and compare Schwalbe butyl and TPU tubes.
Disc rotor specs explained: 140 to 203 mm diameters, six-bolt vs Center Lock hubs, post and flat mounts, adapters, and wear limits.
What 1x, 2x and 3x mean, how each gets its gear range, a guide to which layout fits which rider, and worked ratio examples.
How quill and threadless stems attach, how length and angle move the bars, and how to measure steerer and clamp sizes, with a diagram and worked example.
What spoke gauge, butting and cross-3 or radial lacing actually change in a wheel, with figures from Sheldon Brown and DT Swiss spec pages.
What e-bike motor watts and Nm mean, how legal limits differ from peak figures, and how to estimate the power and wheel torque a hill needs.
Inch names are loose labels. The bead seat diameter in millimeters decides fit: 559 for 26, 584 for 27.5 and 650B, 622 for 29 and 700C, 571 for 650C.
How a bike stays upright, why trail and fork offset change handling, and how pedals, chain and gears turn leg power into forward motion.
Buying a used bike is one of the best ways to get significantly more bike for your money. It’s also where many…