01-29-2011, 08:41 AM
rthornton Wrote:We are building a new layout and was wondering which number# turnouts should we use on our mainline and switching yard? We will most likely be going with Atlas or Walthers Code 83 and running a double mainline 18" & 22" radius.....
An Atlas #4 (really a 4.5) or a Walthers #5 will handle everything that will go around 18" & 22" radius curves. It sounds like you have successfully coordinated the minimum radius and rolling stock you will be using. Be forewarned that a crossover from track to the other using 2 #4 LH or RH turnouts is effectively an S curve of about 24" radius. For crossovers where the curve reverses, you may want to use #6 turnouts.
my thoughts, your choices
Fred W