LGP-30 Memory Drum Update
elson at pico-systems.com
Wed Jan 4 12:06:06 CST 2017
On 01/04/2017 09:03 AM, Klemens Krause wrote:
>> We both have analog recordings (from digitizing scopes)
>> and logic analyzer dumps. So concerning the LGP-30, all
>> relevant information about the drum has been saved :-)
> We have a second LGP-30 drum in our museum. It is damaged
> by water.
> (large rusted areas, probably from water between heads and
> I'm dreaming to wash the brown oxide coating off with a
> solvent like
> acetone, polish the drum and repaint it.
> As magnetic paint I would try iron oxide from audio tapes
> solved in acetone or some other solvent.
> Perhaps one could ask an airbrush artist to do this.
> Rumours say, that the drums originally also were coated
> "by hand".
> Rewriting the timing tracks should not be impossible with
> There is another guy here in germany, who has a LGP-30
> with heavily
> corroded drum. That would be certainly interesting for him.
Previous messages suggested the LGP-30 drum was plated with
nickel. If there are amateur astronomers with a vacuum
evaporator, it might be possible to get them to adjust their
setup slightly to vacuum evaporate nickel on your drum,
after refinishing the base. You'd need a rig to slowly turn
the drum while evaporating the nickel. Some other research
labs at universities might have the necessary equipment,
also - check with the Physics department (or electrical
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