I used to wonder why I’d see old people wobbling on their bikes after stopping at a crosswalk until I realized it’s harder to control the bike with those curved handlebars from a stop. I guess it’s more comfortable when you’re riding because you don’t have to lean forward as much but I prefer the straight handlebars still.
Wobbling would be more influenced by the caster angle than anything (which is really the rake angle on a bicycle or motorcycle). It’s the same reason cruiser motorcycles are easier to handle than sport bikes at lower speeds.
Straight bars would be more responsive since they’re a shorter lever, while the curved bars are a longer lever, meaning it takes more arm motion to turn the wheel, so those bikes should be more stable/less twitchy.
Must be more at play with the wobbly riders you’re seeing.
