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Re: OK -- a non-Volvo brainteaser.... 700 91

posted by  someone claiming to be Don Foster on  Sun Dec 2 07:35 CST 2001 [RELATED]

"So the wheel 'falls' towards the centre and the whole rig seeks the low point..."

No, the wheelset steers itself toward center based on the speed differential between the two wheels (which cannot exist because they're locked together).

"...high riding wheel would be rotating at with a larger diameter, hence speeding up..."

Now you got it.

"...need the bank so the train does not tip over to the outside of the curve..."

Yes, but that's a different and independant issue.

"Self-centering or no, the wheels could slide right off the rails."

No doubt. Can you imagine what would happen if you painted 5 miles of rails with grease?

This whole discussion was about the obscure but obvious physics/mechanics behind trains 'n rails 'n stuff. It wasn't about practicalities such as slippery tracks.





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