4
Motor Installation
Fitting the motor is fairly self-explanatory but will
vary slightly from deck to deck. If the motor body
is too long you may need to raise the height of
your deck using higher feet.
The motor is normally supplied with a “tall” pulley
but you may need a shorter pulley (10mm less
in height) – Please contact us if this is case. The
motor sounds best supported by only 1 bolt.
You can tension the belt by pivoting the motor
plate about the bolt and relying on the bolt
friction to hold the motor in position. You should
aim to have at least the belt tension required to
prevent the platter running slow or incurring speed
variation due to slippage. To this end it is best
to have it relatively tight when setting the motor
speed and then slacken it off fractionally without
any loss in sound quality once you know the
speed is correct. There will be an optimum tension
although it is not always easy to tell by listening
and the tension is not that critical.
Please see Fitting Power Supply lp12 for further
information.
Correct Belt Tension
Disconnect Old Supply
Unplug the deck from the mains supply for safety reasons and before doing any work allow capacitors to
discharge for 45 minutes – especially on the Linn which can give a dangerous discharge from it’s Valhulla
board. Do not remove a base board cover before this period is over as there is danger of lethal electric
shock. You MUST also remove the mains plug at this stage to avoid any possibility of someone plugging
it in at a later stage. You will not need the old power supply any more, so it can either be detached entirely
or simply left in place for quick reversal of this modification.
Installing The Kit
To set correct belt tension finally, lift the belt off the
pulley and let it lose it’s tension almost completely
whilst still holding it gently - With no tension
whatsoever in the belt it should be approx 7mm
off the nearside of the motor pulley (flange edge)
as per diagram below. Move the pod till the pulley
is this distance from the belt, then stretch the belt
to fit over the pulley.
