Description of the problem: The cranks feel unstable. When the rider pushes and pulls on them, they move sideways. Sometimes the motion is subtle, but it could also be very pronounced to…
Condensed answer: Re-using a chain pin on a multi-speed chain is considered bad practice because the pin loses its upper layer during the removal process and becomes ever so slightly…
Description of The Problem: The nipples connecting the spokes to the rim have partially or fully stripped edges. As a result, the spoke wrench cannot grab the nipple and rotate it…
Condensed Answer: The common sources of cassette wobble are: Hub imperfections during manufacturingA narrow cassette combined with a wide hub without the use of spacersThe cassette hasn't been tightened properlyA…
Description of the Problem. During coasting, the freewheel is moving around/wobbling. The motion is perceivable only from the side. Source of The Problem In the vast majority of cases, the…
Condensed answer: By default, a fixed-gear bike a.k.a. fixie isn't designed for disc brakes. That said, it's possible to add a front and rear disc brake, but the process will…
Condensed answer: A bicycle seat post can be cut as long as the new size respects the minimum insertion length of the seat post. Ignoring the minimum insertion length and…
Condensed answer: Bike spokes can be shortened. The first step is to cut them to length. The second is to file the ends and re-thread them. Step 1: Cutting the…
Condensed answer: Shimano and SRAM road bike cassettes can be installed on a mountain bike as the splines of the hubs are the same across the MTB and road models…
Disclaimer: The following article shows how to modify a set of cranks. Follow the instructions at your own risk. BrainyBiker.com is not responsible for any property damage or accidents that…