Don't forget linear tracking such as
this one as well. No arc thus perfect alignment. It seems like they had there own disadvantages, I don't quite recall as I havn't shopped for a tt in 25 years though.
wow, what an amazing looking machine! ;^)
You're right; the Linear Trackers replaced one problem with another, and the problem(s) they introduced (resonance and bearing wear and slop) were more difficult and expensive to deal with.
Good carts are now designed to deal with most of the tracking angle variances. You just have to make sure they are set up perfectly to start!
