DRIVES, Capacitor, No. C1 ZA/CAN 4263
I covered off the improvements to these DRIVES that CMC made when I was restoring the Sender last year. You can definitely feel the difference in weight between these assemblies and the ones in the Wireless Set No. 19 once they are free from the chassis. Better quality parts, higher machining standards and more reinforcement would have gone a long way in reducing the physical wear which resulted in sloppy tuning stability.
And it makes sense when you think about it. The intent of these DRIVES was to allow the Operator to pre-set two different communication frequencies – typically a day and a night frequency, so these drives had the potential of being swung back and forth, stop to stop, at least twice a day. No wonder one of the frequent complaints CMC got from Operators was the loss of ability for the Drives to reliably move to frequency repeatedly, over time.
The frame of these Drives is slightly thicker than on the 19-Set Drives and you can clearly see the solid, bronze alloy triangular blocks CMC used to stiffen the top outer mounting corners. On the 19-Set Drives, these corners were simply created by bending the frame sheet metal over in these areas.
David
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