Just re-read---there are specifics, my mind goes blank too quickly. If you are doing P48 switching you are gold. You won't require super sharp curves. 2 rail curvature, generally speaking, you do need for it to be wider...
Just make certain you can reach EVERYTHING. Nothing should be more than 30 inches away and if that thing is a turnout, I'd have it in 24" or less. No area should be five feet wide---assuming you can access it via aisleway from all sides!--- if NOT you will need access openings.
Do yourself a HUGE favor and arrange your track in a manner that allows you to walk right up to it unobstructed.
You may want to check the appropriate historical society for blueprints, track diagrams to replicate something....duplicating is tough unless it's is a very small switching area...please post pictures and progress.
I have written a design process book and I recommend having a plan prior to starting. You are on your way. Still, plan everything out carefully before diving in.
PS: I don't know. BUT, I believe Rusty is on the right track. I have personally ONLY seen a very small offering for P48. Maybe there's more. I'm a 3-rail highly realistic guy and choose the 3 rail because of availability.
Because of Rusty's comments, I would suggest the OP research the P48 market. My experience is I know 1 man who has it and he is a highly skilled craftsman who "adjusts" everything he buys to Proto48 standards.
I wish I possessed a 1/100 of the skills he has.
