top | item 46946184 (no title) JackFr | 20 days ago Railroad cars don't have differentials and travel on parallel tracks. How?https://www.reddit.com/r/Skookum/comments/47sbri/richard_fey... discuss order hn newest pixl97|20 days ago For those that don't read the link, by having conical wheels. JackFr|15 days ago It’s much cooler when Richard Feynman explains it.
pixl97|20 days ago For those that don't read the link, by having conical wheels. JackFr|15 days ago It’s much cooler when Richard Feynman explains it.
pixl97|20 days ago
JackFr|15 days ago