![]() ![]() Watts per kilogram is a good pace metric for climbs, where gravity is the main thing slowing you down. #2: You’re a Lighter Rider on Flat Terrain Read an in-depth discussion of Zwift’s draft, including tips and tricks. ![]() Others may draft behind you, but you will not receive any draft benefit. Note: you cannot draft in Zwift on a TT frame. ![]() Another 75kg rider will be able to hold their wheel putting out 25% less power, or 169 watts. Tools like ’s calculator can give you good numbers here which reflect outdoor and Zwift physics quite well.Įxample from : a 75kg rider holding 225 watts will travel at 35kph. If you’re “in the wind” on the front or off the back of a group, you will need to hold much more power than those who are drafting. Here are the two top reasons why you’re getting beat by people who are putting out lower watts per kilogram.ĭrafting in Zwift results in a power savings of approximately 25% (more in large groups or with double draft.) In other words, all other things being equal, a drafting rider only needs to put out 75% of the power a non-drafting rider is putting out to maintain the same speed. Secondly, understand that watts per kilogram (w/kg), or power to weight ratio, is your current wattage (the power you’re putting into the pedals) divided by your body weight in kilograms.Įxample: I weigh 84kg, so if I’m putting out 300 watts my w/kg is 300/84=3.57 There are several answers to this question, but first make sure you understand how Zwift is calculating your speed. One common question people ask, especially in race situations, is “Why am I getting beat by people who are putting out lower watts per kilogram?” ![]() Many have little or no experience riding with power–that is, measuring wattage output and understanding how watts affect speed in solo and group ride situations.įortunately, Zwift behaves very much like the real world in terms of physics, so any understanding you may have of outdoor cycling physics will translate to Zwift, and any additional understanding you may gain from Zwifting will transfer outside. With the Northern Hemisphere winter in full force, we’re seeing lots of new Zwifters on course. ![]()
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