Insert Pillar
Insert the pillar into the base, taking care not to
allow it to drop. The bias rig can safely be held
up with one hand while gently tightening the
pillar locking bolt with the other. Do not over-
tighten the pillar locking bolt. Start with the
pivot point just lower than the platter surface.
Orient the pillar so that the pivot bolt points
away from the position of a stylus when it plays
the second half of a record side.
Set Spindle-Pivot Length
Use the supplied protractor (‘Supatractor’) to set
or record spindle-pivot distance:
-push the protractor hole onto the spindle
-rotate the protractor point towards the pivot
-base position is ideal when the points touch
-if points don’t touch, close the gap by
loosening the base and moving it sideways
-a small gap of a few millimetres may be
compensated by extending the pivot bolt and
hoist pipe, see ‘Extending Pivot’ below
-alternatively, measure the discrepancy to
calculate a new optimal pivot-stylus length
-large gaps need a different arm board or arm
Extend Pivot (Optional)
If your spindle-pivot length does not correspond
to your arm’s pivot-stylus length by a
millimetre or two, the pivot and hoist pipe can
be adjusted forwards or backwards.
-loosen pivot lock nut with supplied spanner
-turn pivot bolt with a small screwdriver to
withdraw or extend it by the desired length
-use screwdriver to maintain pivot bolt
position and re-tighten pivot lock nut
-loosen the hoist pipe lock screw
-extend or withdraw the hoist pipe by the
same length as the pivot bolt was adjusted
-take care not to overtighten hoist pipe lock
screw as thread is short and ductile