MattyK wrote:
But that doesn't mean it's faster.
I never said it was faster. I said it feels different. A lot different. (Thought it is faster at low speeds, before aero takes over. But, none of us are riding at low speeds, right.)
rruff wrote:
If all the weight is concentrated at outer edge of the tire, it's a 2x factor. Can't get bigger than that.
Rotational inertia is proportional to the square of the radius of the rotational distance. So, it is not limited to 2x. It can get infinitely greater. I just picked 4x from another bike blog because I was too lazy to do the math myself to figure out the exact factor for a 311mm radius axis. I'm still that lazy. But, here's the formula for rotational inertia for a thin-walled cylinder (basically a bike wheel).
I =
mr2