While this site is mainly in German, the page with flex track is in English. http://home.t-online.de/home/ks-modeltrain/stub-eng.htm Wooden ties and some neat stub switches. From this page, you can get to the rest of the site in German. It looks like the ties maybe about the same size as the plastic flex track from Peco Greg
Checked out the site and here is what I came up with. They state a 600mm radius. That does not fall into any given frog number. A #4 is 528mm and a #4 1/2 is 668mm. Also for "O" scale the throw should be 0.104" The throw on these looks way larger than this. A little word of warning. Most stub switches you buy in any scale do not work well.
I think Jim is right. I took another look at those switches and frogs. The flex track be ok, but after seeing the price on another list, and having to pay shipping from Germany, ouch. I think Peco is cheaper and it definitely is more readily available. Greg
