BSA D14/4 BANTAM SUPREME D14/4 BANTAM SPORTS, Workshop Manual

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D14/4 WHEELS, BRAKES AND TYRES F6
FIG. F6.
When the riveting is completed, file a good chamfer at
each end of the lining to approximately half its depth
and lightly draw-file the face of the lining to remove
any fraze caused by the drilling.
FIG. F7. Tyre creeping.
SECURITY BOLTS
Sometimes, particularly if a tyre is under-inflated, it
will creep around the rim taking the tube with it. If this
is not stopped, the valve will ultimately be pulled from
the tube. It has been found necessary therefore, to fit a
security bolt to the rim of each wheel on the Bushman
models. Before attempting to remove or replace a tyre,
the security bolts must be completely loosened.
FIG. F8. Security bolt.
WHEEL BUILDING
This is a job which is best left to the specialist as it is
essential that the wheel is laced correctly and that
when truing, the spokes are correctly tensioned.
It is however, possible for the less experienced to
avoid trouble by periodically examining the wheels.
As spokes and nipples bed-down the tension will be
lost and unless this is corrected the spokes will chafe
and ultimately break.