Jump to content

Wind tunnel test throws question over the current understanding of aerodynamics of leg hair


GaryvdM

Recommended Posts

Posted

http://triathlon.com...d-tunnel_102363

http://boingboing.ne...s-find-sur.html

 

A 1987 wind-tunnel trial established that leg-shaving was basically useless, used a miniature leg-model with hair glued to it for its control; when the experiment was re-run this year with a human leg, the savings were a whopping seven percent.

 

Time to get the razors/Veet/wax back out guys. Just remember if you use Veet, stop before you get too high up. :ph34r:

  • Replies 58
  • Created
  • Last Reply
Posted

If true, you'll probably find that in 1987 the main contributing drag was from other components (wheels, frame, helmet etc), so any change in small drag components, i.e. hair, could not be detected. Today, after lots of aerodynamic development on these major components, the major drags have been reduced significantly, so that small changes like leg hairs are now detected.

Posted

Damn. My wife will still kill me if I shave my guns... So I guess I'll have to train harder to make up for the 15 watt. Seriously? 15 watts? Damn

Posted

Damn. My wife will still kill me if I shave my guns... So I guess I'll have to train harder to make up for the 15 watt. Seriously? 15 watts? Damn

 

That was a guy who ranked 9 on the “Chewbacca Scale”. Guys that rank a 5 on the “Chewbacca Scale” will save only 7 watts.

Posted

Just trim the bottom a bit ...

started by trimming - then trimmed a little shorter - then thought what the hell lets shave em on off. go for it!

Posted

That was a guy who ranked 9 on the “Chewbacca Scale”. Guys that rank a 5 on the “Chewbacca Scale” will save only 7 watts.

 

Looking at his fynbos as a standard, I'm not far behind.

Posted

If true, you'll probably find that in 1987 the main contributing drag was from other components (wheels, frame, helmet etc), so any change in small drag components, i.e. hair, could not be detected. Today, after lots of aerodynamic development on these major components, the major drags have been reduced significantly, so that small changes like leg hairs are now detected.

 

I think it was maybe rather that the testing method was flawed. I.E. using a model of a leg with hair glued on rather than using a real human leg.

Posted

Which university researched that Laurence Fignon would've beaten Greg LeMond if he had simply cut off his ponytail before the TdF back in the 80s I think? Something about the increased resistance of the hair was equal to over a minute of extra riding time through the 3 weeks and he lost by 30 something seconds or so...

Archived

This topic is now archived and is closed to further replies.

Settings My Forum Content My Followed Content Forum Settings Ad Messages My Ads My Favourites My Saved Alerts My Pay Deals Help Logout