Originally Posted by
fietsbob
If you spread the frame out, that also reduces dish.. 145 is what tandems use.
they have used the extra left side to add the Drag brake, on the hub.
Correct. But I an talking about 2 different bikes here. The 140mm is a custom built steel frame, and the hub will accomodate a drag brake.
The 126mm wheel is for an older model Cannondale. Spreading those frames is not recommended.