SB-series friction dial drive

[Ed Richards]

Hi Murray;

I make my own from parts commonly available from your local hardware
store. Materials needed are: (A) 2 ea 3/8" sheet metal lock nuts. These
are beveled around the outside. (B) 1 ea 1/4" ID by 3/8 " OD rubber
grommet, and (C) a length of 1/4" shaft. I use the excess shaft cut off
of Radio Shack volume controls.

Place the two lock nuts together with the beveled sides facing out. This
forms a "V" around the outside to engage the ring on the dial. Force the
grommet into the hole in the center, and one end of the shaft into the
grommet. I have made several and they work good. Of course, the rubber
wont last forever, but neither did the original !

73,

Ed Richards
On Wed, 2 Jan 2002 11:11:38 -0500 Multi-Volti Devices
<multi-volti at SOFTHOUSE.COM> writes:
> Hello and Happy New Year:
>
> Some time ago I requested help in the form of measurements for the
> SB-
> series dial drive planetary pressure discs (what else do you call
> them?). I'll guess they're made of beryllium copper and they
> eventually
> crack.
>
> I am trying to source them, and either measurements, or ideally a
> dud
> pair you've given up hope on I could submit for analysis would be
> even
> better.
>
> I do not have any SB-gear myself.
>
> Murray
>
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