Registered Forum User
Big Twin
Bikes: Ducati 749, Phil Read Replica, DD 620
Posts: 1,830
Join Date: Mar 2008
Location: Coventry
Mood: 2011 DD Class 'B' Champion
The bearings have to butt up to the shoulder in the wheel. If I remember correctly the spindle passes through and reacts on one bearing. So you only need a spacer on the outside to centralise your wheel. Which would be your speedo drive plus 2mm.