thanks for your comments...I think it's possible to realized it for a R1 curve, but the wheel diameter should be 38-40mm (not bigger)
I think, it's difficult to build, that you can go also with Radius 1.
Till now, there were only locos with smaller wheels.
. I did draw a top view of the train on the track (see below).
The train characterized are:
- length:300mm
- 8-wheels diameter: 38mm
- front wheels diameter:15mm
- 8-wheels axis distance: 45mm
- front wheels ditance to first 8-wheels: 69mm
- front wheels axis position: 36mm
As you say Rasputin, I will make a 3D-modell

Playmo_80