Hey everyone who help me on this tread. I forget to thank you! Because of sir Alex and his awesome thread, 2 hours on it! I'm searching for my jaw again! What a good thread.
I have right now 4.5 inches between tracks. But even on my little 11x11 layout I can have 5.5 or 6 inches.
So before make my tunnel, fix my bridge and going farther, I'm gonna adjust the interior loop.
Thankx again railgods!