[darwins]

Not sure if this question is better asked here or in the modelling section. When making a model loco for OR what would be the best way to represent a "Cartazzi axle" or a radial axle. These are axles that have horizontal side play rather than rotation about a bogie centre. I am thinking that at the moment the best thing I can do is to define the axle as a bogie.

[mrmosky]

Hi Darwin,

I would think that if you define the axle as a bogie, it will pivot about the axle centre; which is not what you want.

Considering how it moves side to side, that could be thought of as a single axle on a bogie which has it's centre an infinite distance from the centre of the axle. That's obviously impossible to design, but a good approximation might be a bogie whose centre is at the centre of the locomotive, and therefore a good distance away from the centre of the Cartazzi axle. In that way, the radius of rotation would be large enough maybe to look like it's just moving side to side.

Geoff