Tag Info

New answers tagged

0

This is a mighty old posting that I am responding to almost 5 years later, but I thought it would be helpful for those who are looking to overhaul their BB and thinking of moving to the external. For the most part that is captured here, External hubs are at least 30% lighter than the internal hubs. Because the bearing cups are outside the BB shell, it ...


7

To prevent galvanic corrosion. When grease is appied, there is a thin film of grease that prevent direct contact between two different metal. To prevent water and contaminants, especially salt in the winter season, that would otherwise accelerates corrosion as discussed in (1) This will not work with plastic or carbon fiber (+epoxy as matrix) materials as ...


1

Ultegra is still hollowtech II. It seems like the Defy 2 in the UK has a pressfit bottom bracket for hollowtech II cranks, while in the US it has an usual threaded hollowtech II bottom bracket. In any case, you need a hollowtech II compatible bottom bracket, which you already have (Tiagra is Hollowtech II only). Just remove the current crankset and put in ...


3

You need a large allen key, often an 8mm to tighten that centre bolt right down. It'll pull the crank arm onto the spindle and secure it. The LH-FSA-AL ring is the self extracting bolt, the internal hex bolt pushes on the back of it to pull the crank off without extra tools. That has a left hand thread so that it doesn't unscrew as the internal bolt ...



Top 50 recent answers are included