17 Feb
2025
17 Feb
'25
12:07 a.m.
On Sat, 15 Feb 2025, Jon Elson wrote:
Anyway, I got pretty frustrated, and eventually pulled
the cover off the drum
and discovered there were two tracks totally scored down to the brass, and a
couple more that were a bit scored. The cover on the drum was just deep
drawn aluminum with caterpillar grommets around the cable entries. NOWHERE
NEAR a hermetic seal!
Magnetic drums usually have a couple of spare tracks exactly for this
reason. You can move a head to a different unused track in case that one
track has gone bad. The LGP-30 for example has around 4-5 spare tracks
IIRC. And no, it isn't hermetically sealed, either ;-)
Christian