THE POWER YOU NEED TO OVER­COME THE WIND

Canadian Cycling Magazine - - FEATURE -

How hard is that wind mak­ing you work? Well, it de­pends.

Let’s say you’re a 60 kg rider and you want to travel at 25 km/h. Also, let’s as­sume a co­ef­fi­cient of drag (CDA) of 0.28. You’ll have to pump out about 72 watts to main­tain that speed of 25 km/h with no head­wind. Into a 6 km/h head­wind, your watts have to go up to about 100. Let’s say it gets a bit brisk out with a 25 km/h head­wind. Well, you’ll have to work for that 25 km/h with a steady out­put of about 236 watts. Fi­nally, let’s imag­ine you can keep things up­right in a 50 km/h head­wind. Well, great. You’ll have to tap out a steady 520 watts for a 25 km/h speed.

Whew.

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