Turnout Information.

[maczimb]

I know this has been discussed before but I can't remember the details.
I have read and tried to understand the standards as laid out by the NMRA on the internet and I am now more confused than ever.
My question: I have need of a few turnouts but I don't know which ones I should get. I am using HO code 100 track.
I would like to maintain a minimum of a 24" radius. OK, I know, I know, all about there not being a true radius but someone out there must be able to steer me in the right direction.
A bit of timely advice would be much appreciated, I got to get started laying track.
Mac

 

[UP2CSX]

Mac, are saying you want to maintain a 24" radius on the diverging route? That's tricky because not all switches are made equal. For example, Atlas #6 switches have a 22" radius diverging route curve while #8 switches have about a 25" diverging route curve. A #6 switch can be made to have a 24" radius diverging route with some flex track but you'll have to watch for kinks. If you're up for the math, a complete set of instructions on how to calculate diverging route radii can be found at http://www.virtualrailroader.com/diverge-calc.html

 

[maczimb]

Thanks

Thanks Jim for your help.
I will go with Atlas #6, I believe I can make those little puppies work.
Mac

 

[Cjcrescent]

Go here;

http://www.nmra.org/standards/sandrp/rp12_3.html

I think that you may be surprised. Look for the radius in the Closure Radius of the turnout. This is literally the radius of the curved part of the turnout that is located between the frog and the points. This would be the radius that you are looking for.