Combining the concepts of “Flop Factor” and “Steering Gain”,
a higher steering factor equates to a faster steering bike.
“Flop Factor” is the amount the front wheel “flops” as the handlebars are rotated. A higher Flop Factor is experienced as quicker or more sensitive steering, similar to power steering in a car. A lower head tube angle will amplify it, making the steering quicker.
“Steering Gain” is the amount of leverage in the steering system and is proportional to your stem and bar size. A longer stem, or wider bars will make the steering slower.
You may think the Head Tube Angle relationship should be the opposite. Race bikes have high head tube angles. Aren’t they fast steering? Not necessarily, as steering and response can be confused.