Using "bikecalculator.com" the difference between 185 lbs and 175 lbs is .07 mph with 200w power. Despite our perception. The heavier bike will take about 5% more power to accelerate and climb, But that power is returned when we stop pedaling, it's only lost when braking . More rotational weight exasperates the effect slightly, But again the extra energy is not lost. FAR more important then weight is wind resistance, rolling resistance, the engine and strategy.
Last edited by xroadcharlie; 04-26-20 at 07:32 AM.