External BB

Bible Basher Biker

I'm sure this is dealt with elsewhere but can't find anything, sorry if it's a tired question ....

In the old days, when buying a BB you had to get the right length. But new cranksets with external BB's don't seem to mention this, so how do you know if you're getting something that fits your frame/chainline?

And does the external BB mean your cranks are further apart?

thanks!

supersonic

The cranks come with the bottom bracket, and all the ones that fit the cranks that are available give a stated chainline (usually 47.5 or 50mm). Spacers are used for shell width.

nicklouse

And part B not really.

And back to A is a rad cranks set the cups are separate.