Are all the critical dimensions the same on a Gotoh Floyd Rose as a Schaller made original Floyd Rose?
Pretty much. The low to high E distance is 54mm on the Gotoh compared to 53 on the Floyd Rose. And the Gotoh studs are larger, if you swap an OFR for a Gotoh you'll have to pull out your drill bits set. Some people are reusing the Floyd studs, though I don't know what the long term results are. I wouldn't do that, especially since the Gotoh studs can be locked into place once you've adjusted the trem height, this and the tremolo arm are very well designed.
I see. So my OFR guitars may or may not like a swap, and my Warmoth body routed for OFR with studs installed also may not be happy.
So does anyone know if the Gotoh is a direct drop-in replacement for any of the Ibanez bridges? (specifically the edge-pro)