Here is a question for those MMR geniuses who walk amongst us dispensing knowledge: While working on my layout design, I meanured out the protype lengths of the "legs" of the wyes commonly used - they work out to between 300' - 350' per side. That scales out to a triangle over 2' per side, which is difficult to shoehorn into an HOn3 layout. My question is: how much can the wye be selectively compressed and still function properly? Per my fledgling trackplan, 3 sections of 18" radius per side are required plus a staight section of flex to fit across the base of the wye. Does anyone have any practical experience with 15" curves on wyes? I'll be running 1890's 2-8-0's and 4-6-0's, which can allegedly handle such tight curves. BTW - in the prototypical region in which I am basing my design, turntables were virtually non-existent.