3 Inch Disk Drives - Additional Information.

 

Introduction

3" disk drives were used in a number of computers during the 1980's - these include the Amstrad CPC and PCW ranges as well as the Sinclair Spectrum + 3.

 

Differences in Internal Drive Models

There were many different revisions to the 3 inch drive design and although the Printed Circuit Board (PCB) underwent many changes - the mechanics of the drive remained virtually unchanged.

See the photos of the various drive models (known to me) below - PCB screw positions are outlined with a red circle.

 

Model Z70313

This drive was taken from an Amstrad PCW 9512.
Model Z70341

This drive was taken from an Amstrad PCW 9512.
Model Z80265

This drive was taken from an Amstrad PCW 9512.

 

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