Why train wheels have conical geometry
@yogthos putain c'est pas con :) hâte de le voir mis en pratique à la SNCF... merci du partage.
@yogthos this is so cool!!
@yogthos sehr schön gemacht
@yogthos oh I saw this, this is cool
(I'm not sure if it's true, but when I was in SFO someone told me that non-train-engineers designed the BART and that's why it's so terribly loud -- they used cylindrical wheels, not conical)
@yogthos as civil engineer I know that... but the video explains it besser than my professor with board drawings and formulas about 30 Years ago ;-)
@nev @kurtm @yogthos #trains are fun. The geometry by itself isn't quite enough as something needs to damp the oscillation around the centerline (You can see the oscillation at the end of the video). I've read the wikipedia article on the hunting oscillation and am still really not clear on what damps the oscillation.
@yogthos very neat.
@yogthos the ending of this synced perfectly with the breakbeat track i'm listening to
that was hardcore
@yogthos Saw this on Reddit just a bit ago. Good stuff.
@yogthos awesome invention
@yogthos BART has flat wheels & tracks, which makes it scrape along & contributes to nobody wanting it to come through their neighborhood.
@seanl mistakes were made :)
@yogthos Beautiful description. It is also nice to be able to see the source of the gif/video... so much stuff like this has no information on the source
@yogthos this is why we design our wheel based on the boob
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