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
drum).
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
todays
electronics.
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
engineering).
Jon
