Problem with Atlas Y turnout

[RobertInOntario]

Rob:
I've had problems with British locos and Atlas switches for over 50 years. Things may be getting better, but the older locos will still hate NMRA standard switches.

The problem is in 2 places. The flange is too wide and rides up on the guard rail. The back-to-back is too narrow and the wheel pinches the guard rails on opposite sides and then rides up on them. (if you're that type, the check gauge is narrow as well.)
I also have problems with old TriAng locos on Peco finescale points.
You may want to check the flangeways against the Peco ones. Probably everything would need widening.

What size Y is it? I may have some spare code 100 or code 70 I can bring to GBTS.

Thanks, David. Yes, that is what appears to be happening re the guard rails, etc. Locos that were made in the 70s and 80s seem to be the main culprits. I've tried one HD loco which seems "OK" on this turnout.

Just offhand, I think it's medium radius turnout -- I forget exactly, but it's NOT the more gradual/shallow-angled one. It is definitely Code 100 though. Thanks for offering to bring some to the GBTS! That would be great; look forward to seeing you there.

Cheers, Rob