VPI Classic Azimuth Seems to Change -- Normal??

Bifwynne,
How did you determine that the azimuth changed?

In which direction did the arm change azimuth? Did the cartridge rotate anti-clockwise? If so, perhaps anti-skate force is a culprit, as Swanny mentioned. You could simply try reducing the anti-skate, as an experiment.

Thanks guys. This may be heretical -- but I am not using the VPI AS set up. I was using the VPI suggested twisted wire - rough justice approach. That is until I relaxed the wire because of the torque issue.

Actusreus, I use a tiny bubble level that is made for cartridge set ups. It's probably 45 years old. Short of using an oscilliscope, it's probably the most accurate way to check azimuth.

Swanny, I'm not sure I understand your suggestion. If I am not using the AS device, is the suggestion relevent?

I sent Mike an e mail. I'm not sure he'll be around. The pre-recorded phone message said something to the effect that Mike and others may be at RMAF.

Thanks again.

Hi Bifwynne, I keep my wires in the neutral position so there is no counter twist. Also, I substituted the VPI drop-style weight for XTCW counterweight through Ebay (seller JCLOVESmusic - United Kingdom). It has a much lower center of gravity than the VPI, thereby, creating greater azimuth stability. The improvement in sound reproduction was pronounced.

Interesting, as was stated above did you twist the wire slightly to set the anti skating? Also, what did you use to measure the azimuth? I use an angle protractor to measure the distance from the bottom of the record to the azimuth rod (on both sides of the azimuth rod.