National RAO Receiver Mechanical Problem

[Dave Hollander]

My National RAO catacomb radio is now running quite nicely however I
have  a problem with backlash on the main tuning dial. I have torn into
the gear box without taking anything apart and can see what is slipping
but haven't a clue as to how to fix it. It has two gears in kind of a
clutch like arrangement. Is anybody familiar with the  gearbox from the
RAO or possibly similar National   radios like the NC-100A?  This is not
the same reduction box used in an HRO5 or earlier.

By the way , I used armorall to cleanup the front panel which appeared
to be faded. It cleaned up beautifully this method. I have also never
seen such a heavy front panel. The panel appears to be steel and must
weigh at least 6 or 7 pounds.

Any suggestions on the gearbox would be appreciated

73 and Seasons Greetings,

Dave Hollander N7RK
http://www.getnet.com/~davidh/

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