Slaving autopilot to a VOR?

Jay Honeck wrote:
My autopilot (2-axis, Piper) is hooked up to my DG, via a "heading bug."
Otherwise, it's just a wing leveler.

I've been told that this autopilot has the capability of being connected to
my VORs.

Can anyone outline what's involved with connecting the two?

Thanks!

I suspect what you have is something like a Piper Autocontrol? Two axis? You
mean it has altitude-hold?

Well, anyway, I think what you need is something like this MITCHELL RADIO
COUPLER FOR CENTURY III AUTOPILOT
http://cgi.ebay.com/ebaymotors/ws/eB...m=2479416 829

....but (assuming all my assumptions above are true) I predict you won't like it.
If there's any unsteadiness at all in the VOR signal, the autopilot will
follow the swinging CDI. There's some damping built into the coupler, but
still... Even when the VOR signal is rock-steady, all (well, OK, 2) the
installations I've seen will "hunt" back and forth across the centerline of the
signal. There might be a sensitivity adjustment that will correct this.

When I had one, I nearly always used it in heading (not NAV) mode, except for
the occasional coupling with a localizer for instrument practice. Actually, I
always felt guilty using it on the localizer. It made the approach too easy.

Dave