Hey Phil, thanks for the quick response.
Apologies for not articulating my question a little better. I'm looking at running the usual Bachmann, USA Trains, etc locos and rolling stock through larger radius Gauge 1 pointwork.
The radius, is not the problem..
The gauge 1 trackwork, will probably be a different 'code' to LGB track, for a start: 'Code' refers to the height of the rail-section. LGB etc. track is code 332, whereas gauge 1 track is nearer to scale-size, so is smaller.
Lgb et al wheels have large flanges (bigger diameter) so one problem is as the wheel goes through a frog, the flange rides-up, as the 'groove' is not deep enough. - At a minimum, there will be a jolt/bump, which can be enough to either uncouple stock, or cause the stock to derail.
Gauge 1 standards are a lot finer, so the wheels are thinner, than 'G'.. - A g scale wheel may be too thick for the flange to fit between the running-rail and any check-rails. Again, this will cause the wheel to ride-up, and very likely derail the stock.
The physics, and tolerances of rail, wheel-profile and gauge are quite complex. Scaling this down, means our tolerances can be quite exacting.
Get any of it wrong, and you have problems.
I have a leaning to British outline stock, and have found that gauge 1 wheelsets will drop completely into the frog of g scale pointwork..
You can fit shims, to reduce the width of the 'slot' through the pointwork, but this (if not done carefully) will give problems with LGB stock and loco's.
If you want 'larger than R5' then there are offerings, in code 332 rail-section, from some of the manufacturers. - Second hand Aristocraft, comes to mind..
Am sure someone will drop the diagram of differing radii and manufacturers?? - My Google-fu is not good today.
PhilP.