I wonder whether VPI just grew tired of the direct and indirect criticism of their own products on their own forum. There was a very long and very critical thread about their ADS drive system. It was so critical, including complaints from buyers, that they had to shut it down. More recently there were threads about using the SOTA offerings of motor, drive system and tachometer for VPIs that were far better than the VPI motor and drive system.
Is the VPI Forum Down Again?
I've tried to access it all day and all I get is a 404 error code.