SR-52 card reader wheel

[albertofenini]

Little update
We opened one of our two working units
Looked like never opened before but once opened the card reader was loose and the roller missing
We recovered the roller form one of the scrap units
We cut a thin 3 or 4 millimeters wheel
Put some wd40 on the back of the motor
We noticed that with an inner diameter of 4 mm the wheel tents to slip
However we couldn’t find a inner 3 and outer 8
We will probably glue
First test looks good
We were able to read a diagnostic card and lunar landing
Tomorrow we will try to read more cards and to write as well
Too bad one of the battery contacts broke ...
Pictures: SR-52 953114 LTA4176