[Boatanchors] Backlash in a National capacitor

[Ian Wilson]

Lee - excellent, thank you.

73, ian K3IMW

On Wed, Sep 19, 2012 at 4:44 PM, <LeeCraner at aol.com> wrote:

> **
> Ian:
>
> If you haven't checked out this web article, it will be worth your while:
>
> http://www.radioblvd.com/National%20HRO.htm
>
> 73
> Lee WB6SSW
>
>  In a message dated 9/19/2012 4:04:31 P.M. Pacific Daylight Time,
> ianmwilson73 at gmail.com writes:
>
> Lee,
>
> Very interesting, thank you. I disassembled the mechanism and discovered a
> large
> amount of crud on the worm. Cleaned this up. Reassembled and - beginner's
> luck -
> got it back together. However, I must have applied too much preload
> because the
> amount of torque required to operate was excessive. Upon second attempt -
> goodbye
> beginner's luck - all three of the tension springs decided to disconnect
> themselves;
> fortunately only on one end. I will see about reattaching them tomorrow.
>
> Incidentally, the capacitor rotor shaft doesn't move as freely as I would
> expect.
> I imagine this worsens the backlash.
>
> 73, ian K3IMW
>
>
>