Origin Live Building a turntable almost from scratch - Manual (Page 13)

13
Motor Attachment
For top surface mounting of the motor, make an elongated hole for the motor of 35 mm width or 40 mm diameter as
shown on the layout diagrams. When using the dc motor with a sub-chassis design it is preferable to mount the motor
on the sub-chassis. This is different to ac motor philosophy because the motor runs so smoothly that it is better to isolate
the belt transmission from the environment. The pulley should not be tampered with as it is a press fit on the shaft and
attempting to shift it can damage the motor.
A
pp
ro
x
13
m
m
18
m
m
Press fitted precision pulley
(do not move)
Motor
Plinth
top plate
Motor in elongated hole to allow position adjustment
see layout diagrams
Screw
Motor Plate
Wiring
The wiring instructions are contained in the section describing the Ultra kit assembly. It is vital that all high voltage
electrics are covered and safely insulated to CE regulations to prevent any possibility of contacting any potentially lethal
live mains voltage. This should not be a problem as all the high voltages only exist from the mains plug up to the fully
enclosed pre-built power supply box. The maximum 12 Volts output of this box (leading to the regulator board) is safe
but always check first. Various methods of mounting the dc electrics are suggested in the dc kit mounting instructions.