Narrow gauge turn radius and speed

[Gazza]

Can anyone tell me as a rule of thumb the turn radius on narrow gauge required for

-160kmh
-140kmh
-120kmh
-100kmh

[BrizCommuter]

It also depends on cant deficiency.

[Gazza]

Is there a set of values you can provide for a given cant?

I'm just seeking a rough rule of thumb at this point.... Perhaps the easiest way to phrase it is what would be the maximum and minimum radius for each speed level depending on available cant

[ozbob]

This will give you a general overview Gazza.

https://en.wikipedia.org/wiki/Minimum_railway_curve_radius

See speed and cant section (table).

1067mm is less stable than 1435mm so you can probably assume greater radius ( +10% or so)  would be required for the same speeds on standard gauge.

Note the effect of tilting trains.