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MMD > Archives > May 2002 > 2002.05.03 > 09Prev  Next

Seeburg Music Roll Friction Drive
By Dick Merchant

The Seeburg E's roll is driven by a rubber-tired wheel that bears
against the larger wheel that is belt driven by the electric motor and
connected to the crankshaft that runs the pump bellows.  The driven
wheel can be positioned closer to or further away from the driving
wheel's axle to change the roll speed.

The way this is supposed to work is that the driven wheel has a force
on it from somewhere that tends to push it further away from the
driving wheel's axle as it turns so the tempo adjustment is a stop that
can be adjusted by a screw that pushes the driven wheel back towards
the axle of the driven wheel to what ever position you set it.

All of this has been working fine for the last several years since the
instrument was restored.  However, lately, something has changed and
the driven wheel wants to drift as close to the driving wheel's axle as
it can go and stay there.  So everything plays at the slowest possible
tempo.  I can't see anything that seems to be different that may be
causing it.  Has anybody encountered this problem on a Seeburg roll
drive, and can you tell me how to fix it?

Dick Merchant
Carlsbad, NM

(Message sent Fri 3 May 2002, 06:32:32 GMT, from time zone GMT-0600.)

Key Words in Subject:  Drive, Friction, Music, Roll, Seeburg

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