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Headwinds!!

Old 07-18-06, 11:35 PM
  #1  
bernmart
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Headwinds!!

I did a 100-mile, two-day group ride to San Diego this weekend. Great ride, but hot, and headwinds most of the way. In fact, the longest continuous headwinds I've had to cope with.

What surprised me was that the headwinds slowed me down more than most of the others in the group. It could be that my technique was lousy (always a pretty good bet), but the others were just peddling along as best they could. What also occurs to me is this: I'm a pretty big guy--195, 6'2", 44Chest. The other riders were women or much smaller men. Could it be that I'm presenting a bigger surface to the wind, and therefore am more affected by it?

I'd be glad to hear your thoughts and/or experiences.
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Old 07-19-06, 01:03 AM
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That's a good question. I think that the other riders may be more aero than you and cut through the wind more easily due to their frontal area being smaller. However, you didn't mention whether you or others were drafting. That can really help in head/cross winds. Were you doing anything differently regarding drafting compared with the other people?
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Old 07-19-06, 01:26 AM
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they're probably just stronger than you.
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Old 07-19-06, 06:00 AM
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They are probably just stronger riders, but your form does make a difference, how much of one is debateable. Our friend, the aerodynamic drag equation:

D=0.5*rho*V^2*cd*A

You can see that drag force varies linearly with the planform area perpendicular to the flow direction.
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Old 07-19-06, 06:04 AM
  #5  
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Originally Posted by bernmart
I did a 100-mile, two-day group ride to San Diego this weekend. Great ride, but hot, and headwinds most of the way. In fact, the longest continuous headwinds I've had to cope with.

What surprised me was that the headwinds slowed me down more than most of the others in the group. It could be that my technique was lousy (always a pretty good bet), but the others were just peddling along as best they could. What also occurs to me is this: I'm a pretty big guy--195, 6'2", 44Chest. The other riders were women or much smaller men. Could it be that I'm presenting a bigger surface to the wind, and therefore am more affected by it?

I'd be glad to hear your thoughts and/or experiences.
It is a frontal area effect, that's one of the reasons people like to draft behind me!
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Old 07-19-06, 10:12 AM
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I'm a big guy too (6'3 205) and experience the same thing. The guys I ride with are stronger than me but I can hang with them in winds <15-20 mph without too much trouble. But when it gets up to 20-30+ (frequent here in Oklahoma) it's just a matter of time before I get dropped. On the flip side, I think a tail wind benefits me more than it does the short, skinny guys but I'd still perfer no wind at all.
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Old 07-19-06, 10:21 AM
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I'm a big guy too (6'3 205) and experience the same thing. The guys I ride with are stronger than me but I can hang with them in winds <15-20 mph without too much trouble. But when it gets up to 20-30+ (frequent here in Oklahoma) it's just a matter of time before I get dropped. On the flip side, I think a tail wind benefits me more than it does the short, skinny guys but I'd still perfer no wind at all.
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Old 07-19-06, 10:22 AM
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Originally Posted by bernmart
I did a 100-mile, two-day group ride to San Diego this weekend. Great ride, but hot, and headwinds most of the way. In fact, the longest continuous headwinds I've had to cope with.
Where did you all start out from and did you all ride back or took cars/train back? We're doing a shorter Bike Forums ride this Sat, the 22nd from Irvine to Oceanside if you care to join us. Here's the ride thread......read the last pages for final ride details.
http://www.bikeforums.net/showthread.php?t=207680

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