Chris,
I'm suitably inspired. So much so that I created a segment of 3 foot radius double-check-railed S7 track this evening to test my re-wheel-rimmed Fowler chassis upon. I'm sold on the ability to maintain S7 standards (with small locos), have realistic and functional check-rails, and have "prototypically" absurd curvature - with careful fettling and testing, of course. The Peckett will be a brilliant companion to my little blue beastie.