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I've seen realistic looking On30 layouts with a 8" radius. You might can even get by with 6". Of course, you'll be limited to 4 wheel critters and rolling stock. I'm pretty sure the Spectrum Shays and Climaxes can go to a 10" radius, but don't hold me to it. If Harold sees this, he can tell you for sure. How prototypical are you wanting to be with the tie situation? Atlas code 100 flex track is MUCH closer to the real thing than the Peco is. Peco is 1/43 scale tram track, so the ties are further apart than they need to be. The Atlas ties measure on 15" centers, while they are actually supposed to be representing 18" centers. If memory serves me correctly, I think the Peco ties are represented to be on 26" centers.....I know it's twenty something....so that makes the Atlas WAY more correct as far as tie spacing and width. The only measurement where they are not correct is the tie length. Seems like they spec out at 4 1/2' in O scale, and the prototype is 6'. Usually though, the tie ends are covered in ballast, so that part is no biggie. Harold is the man. He will straighten out anything I boogered up. I know I'm close, but I can't remember all the details. Here is a picture off of Harold's site. I'm pretty sure that's an On30 locomotive, and an O scale little person with Atlas code 100 flex track. Looks just fine to me. [img]http://www.pacificcoastairlinerr.com/1879/cars/couplers/image/obj21geo21pg1p33.jpg[/img] Here's Harold's site: http://www.pacificcoastairlinerr.com/ He's the man when it comes to On30. There's lots of good information there. [quote]QUOTE: Originally posted by GoodoleBob What are the standards for layout construction with this scale? In particular what radius curves are the typical minimum for the motive power being offered..which radius is more appearance oriented for those that have the space to utilize such curves. How about track centers for adjacent tracks as in yards etc. What size are those ties being used on Peco's version of the On30 track? Rail size code for 70 to 80 lb rail in 1/4" scale? Anyone have any good reading suggestions on this particular scale? Thanks!! Bob [/quote]
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