Originally Posted by
andydandy76
Does anyone know the correct size to order for a bottom bracket replacement on a Birdy III touring Riese & Müller?
The Riese & Müller Birdy 3 has external bearings with a hollow axle crankset.
Its not a traditional bottom bracket, just two cups with bearings inside on both side of the bottom bracket box of the frame. The axle is part of the crankset that goes into the center hole of the two cups bearings.
I never dismounted the crankset of my
Birdy 3, I do not know the diameter of the axle of the crankset.
There are information written on the cups:
