What are the most basic factors that affect a stability of the bike? And if so is it more stable if it the value was larger or smaller(example; larger wheels more stable)

Question

Bike width(From left to right when viewing as a rider) ?
paddle height from ground?
overall height?
Bike length (from back wheel to front wheel)?
Tire width?
Tire radius?
Suspension?
Longer chain shorter chain?
The different connecting metal pipes between front and back wheels?

In: Physics

Answer 1

Unfortunately, the answer is “yes.”

Larger, heavier wheels are more stable. Longer wheelbases and lower seating position-which translates to lower center of gravity- will also increase stability. In the steering, flatter rake angle (another poster called it caster, both are correct), increased trail, and wider handlebars add stability as well – the last one because it allows the rider to steer more easily (increased leverage.)

Chain length won’t make any difference. It’s just a power delivery system. Suspension may affect you a bit in that it changes the geometry as it moves, but not past that. Frame tube length is determined by your desired geometry, and by other factors such as wheel size and the size of the intended rider.

Keep in mind that there’s diminishing returns, though, and that every gain in stability has a loss in some other area.