You have the cone shaped wheels to allow the turn. Flanges on the wheels to keep from coming off the track during turns. The trucks underneath the cars rotate so the whole car body doesn't need to rotate.

It's very, very, very simple so I'm guessing you're missing that the trucks rotate since that's mostly glossed over in any explanation I've ever seen.

>>6365
You know what else is glossed over? The fact that the contact point between the wheel and the rail is not point-like because the wheels flex. This always leads to tiny amount of grinding when other side of the contact point is going too fast and other side too slow.

Typically axles in the bogies have only up and down play, so they can't be fully perpendicular with the rails, so again there's some inevitable slip.

Apply force or brakes, have the load distributed in any way other than from the heaviest to the lightest and the flanges will sing - even in a gentle curve.

It's depressing really. One thinks they have found a perfect system to soothe their unspecified spectrum disorders but dig a little deeper and it's all full of inherent flaws again.

>>6365
>The trucks underneath the cars rotate
Interesting
>>6366
so indeed there's a little slip and it's not all perfect?

1. You don't have very tight curves
2. If you have a avrage train car the wheel assemblies can rotate the attached picture.
3. They do it the easiest and cheapest way possible so most train wheels aren't set up with a differential so there is slipping going on when going around a curves.

>>6367
There's ALWAYS slipping and there's ALWAYS deformation in everything.

It's just usually very small.

>>6368
>>6369
thanks, it cleared my mind

Actual high speed rolling stock has steerable axles (the axles can turn to better match the curvature of the track, within the bogie) but it's secret special sauce and we don't talk about it much because foamers are usians who call em "trucks"

>>6374
If you actually care, look up the stress/strain relationship. It's something I don't think is widely taught.

You realize that the rail deforms a non-negligble amount as each TRUCK passes over it.
(Bogies are for golfers)

>>6376
might look into it once I finish midterms. on an unrelated note, did the post count reset when site went down?