O72 Remote Switch Question

I have O54 Atlas switches, back to back cross over is 4 1/4" with no additional piece added between the switches. Atlas track system was designed on 9" diameter increments.    O54 switches pictured, upper right center of this picture,  4 1/4"

It really depends on what spacing you want.  Since I was doing parallel loops, I wanted 6" spacing all the way around, so I added a short piece of track between the two switches.  These are Ross 201 #4 switches, and they've been trimmed to fit in the straight space I had here.  The curves of this loop start right at the entry end of the switch.

A crossover with Atlas O72 switches produces 5 1/2” parallel tracks measured center rail to center rail.  

The Ross #4 switches were much tighter, they produce a clearance of 4.5" C-C with no filler piece.

Thanks for your responses.  However, I am not talking about crossovers.  I am wondering what pieces you need to make Parallel track.  For example, for a #5 turnout it says I need one piece of 4.5" straight, two pieces of 1.75" straight and a half curve O72 added on to the curve section of the switch to get to Parallel.    I'm wondering what I need for the O72 switch to get to parallel.

If I understand what you want, you just need one Atlas O72 curve to return curved part of switch to a parallel to straight part of switch. Diagram attached showing 6072 switch with 6062 O72 curve - resulting parallel straights are about 5.5" center rail to center rail.

Thank you!