Hi Don,
The hubs on front wheels are offset to the right to allow for the brake disc, whereas the hubs on the rear wheels are offset to the left to allow room for the gear cluster.
The
offset wheel rims on the original spoked Magic Pies was due to the narrow flange design of the original motor ring which was unfortunately centred within the offset hub instead of the dropouts, which is why I had to modify mine by adding an additional flange ring to allow the rim to be properly centred:
The rims on the later spoked Magic Pies
(MPII onwards) should be correctly centred
if the wheels have been built correctly.
If a spoked rim is offset on a MPII, MPIII, MP4 or MP5, it is because the rim was not properly centred during assembly, and it should be possible to sort this simply by readjusting the spokes correctly.
The
16" cast Magic Pie rims were ~7mm offset on the front and ~9mm offset on the rear, which is why I proposed that the 20" cast rim should be offset by 7mm in relation to the hub to allow the front wheels to align correctly for improved steering and the same rim fitted to the rear motor would only have a 2mm offset.
Alan
