Readers Comments (50)

  1. Jonathan Tejada May 27, 2021 @ 1:39 am

    Why not just shave your head and eyes lashes while you’re at it.

  2. chris robinson May 27, 2021 @ 1:39 am

    so I would be really interested to see the data of the different between a 1x and 2x set up in the tunnel

  3. So how many watts does that correspond to? That’s the ultimate question because that’s usually how we think about drag as athletes.

  4. What speed where you running tha test at? Im a XCO/XCM racer i we mostly have lower speeds 25-30 km/h. Im also interested to hear what power the seconds you mention correspond to? 80 sec, whats that in watts?

  5. I am not that hairy but I am going to give it a try.

  6. Programmer 4Life May 27, 2021 @ 1:43 am

    what about shaved vs using leg warmers?

  7. Justin Crediblename May 27, 2021 @ 1:43 am

    if shaved legs aren’t beneficial, then covering the whole bicycle in carpet would be fine.

  8. Just look at how perfect and beautiful cyclists look shaved and how crap unshaved. Never mind the wind tunnel.

  9. Who else went and shaved their legs immediately after watching this vid?

  10. Edwin Cancel II May 27, 2021 @ 1:47 am


  11. Nicholas R.M. May 27, 2021 @ 1:48 am

    Video and audio quality sucks!!! The Audio cuts every 2 seconds on some parts!

  12. Mikes Bikes Sausalito May 27, 2021 @ 1:50 am

    SO SICK!

  13. Andy Thornton May 27, 2021 @ 1:52 am

    Any chance you could test this out

  14. 35627819028353729-4984653 May 27, 2021 @ 1:53 am

    Do specialized s-works sub6 shoes

  15. Interesting, I’ve heard about wind tunnel research that said the exact opposite (though I don’t remember which one). Wasn’t it Sky who put special gel on their legs in a time trial once to roughen up the surface of their legs?

  16. I predicted shaving reduced drag all along. Glad to see that technology finally caught up so that now it can be proven.

  17. >_> whoa…. its…. mind blow truth, I admitted it I actually don’t believe it LOL

    I might try this one day (now staring at shaving knife… hmph..) thanks Specialized, you guys make me laughs out loud this one! +1

  18. Shaving legs is gay though

  19. I have super furry legs and every time I ride I feel the wind dragging on them, and have been wondering just how much would I save if I shaved. Now I know!

  20. Legs only?? Or arms as well?…what about the rest of the body????

  21. who cares if its faster… its all about style, Style, STYLE, *** STYLE ***
    especially if you’re running Campagnolo,
    and *** DON’T SHAVE *** use an automatic tweezer machine

  22. What if you wear thin lycra legs? Same as shaved?

  23. Guilherme Lago May 27, 2021 @ 2:05 am

    The video gives the impression that performance gain is just about aerodynamics. And it is probably not the case. Shaving estimulates periferal blood flow and gives you a good sensation of "readiness".

  24. You should wax, not shave. Save some more weight, too.

  25. shaved legs? keith had some ugly legs

  26. Patrick Gordos May 27, 2021 @ 2:07 am

    LOL. Ladies absolutely HATE it on multiple levels…

  27. Kelke van Lessen May 27, 2021 @ 2:07 am

    wtf they did not even publish the real data, not even showing their speed, what is this

  28. Meng-Hua Chiang May 27, 2021 @ 2:10 am

    try different amount of bar tape used

  29. 2:10 Results: shaved legs save 1m10s over 40km. Equivalent to going from a traditional round tube frame to a Venge frame.

  30. Jonathan Tejada May 27, 2021 @ 2:12 am

    This test is flawed in so many ways. Anyone who thinks exposed leg hair at the bottom of your legs creates any sort of noticeable drag is a clown. If there is any sort of truth to this, then eye lashes will also create "drag". Bunch of leg shaving women looking for excuses imo.

  31. It would be useful if you guys posted the data for each test in a description link.

  32. Enda Bigarella May 27, 2021 @ 2:18 am

    +Specialized Bicycles, so we can assume shaving will let your skin smoother and the flow will keep laminar until separating (maybe the separation afterwards is defined by the geometry of the legs/calfs, which end abruptly… a flow visualization would figure that out).
    Anyway, I wonder now what happens when you’re drafting, so the wake reaching you is most probably turbulent (?). Would shaving see such a remarkable difference now?

  33. LaughingSaint May 27, 2021 @ 2:19 am

    What about arm hair?? And head hair for that matter ??

  34. 2:10

  35. how about leg warmers?

  36. I don’t think the big difference is all due to the extra wind drag from the hairs.

    For all you spring leg shavers (guys who let it grow all winter), try this. Shave 1 leg and go for a ride on a cool day with out tights. You will really notice the temperature difference. The thousands of hairs act like tiny radiators sucking the heat out of your leg. Remove the hair and your legs stay warmer. Eddy B used to tell us to wear tights when it was below 65f out. Some guys used gobs of IcyHot to try to keep the legs warm on colder days so they could race without tights which always seem to slow us down. Anything to keep the legs warm would do. IMO shaving is good for a ~10F lower temp outside. How much difference does that physiological change (not psychological) make in wind tunnel test? How could you even measure the effects of temp difference? Maybe try turning up the heat in the wind tunnel and just compare drag at many temp levels. This sort of testing would probably be better done on an ergometer in a lab where the room air temp can be controlled. Perhaps the hairs cool the skin, the body sends more blood to the skin to keep it warm, thus depriving the muscles of oxygen. The human body does use blood flow for temperature control. In life threatening cold, the body will cut blood flow to the extremities to save the head and core. Shave and the skin stays warmer, increasing oxygen availability to the muscles.

  37. Patrick Callahan May 27, 2021 @ 2:20 am


  38. Geoff Goldplum May 27, 2021 @ 2:20 am

    I’m an MTB’er I need the hair to cover the scars

  39. Rudy Elizondo May 27, 2021 @ 2:20 am

    Great vid guys, funny too

  40. What about shaving your balls? did you test that?

  41. Corentin OGER May 27, 2021 @ 2:26 am

    Impressive and definitely worth it for pro racer. As a casual rider, though, I’m not sure I’m ready to shave to save 1 min over 40km. Lycra is an alternative.
    I like the "time gained over xx km" metric since it applies to riders of all levels.

  42. So what about lycra legs over shaved and hairy?

  43. Please do shoe covers verses no shoes covers, and maybe road vs mtn while youre at it!

  44. this is bull

  45. Forever Aloe Products May 27, 2021 @ 2:28 am

    OK ….. great info but what about aerosocks. Shaving better than unshaven, but are aerosocks better or worse than bare skin?

  46. wtf

  47. It’s been a few years since this video came out. Has there been any follow up on it?

  48. The Photo Cyclist May 27, 2021 @ 2:33 am

    Fenders vs no fenders vs ass-saver

  49. The best practical reason for smooth legs for me is that it makes applying sunscreen and other stuff easier. With hair you need much more of it and it takes much more rubbing to spread evenly, because the hair impairs the flow. For the same reason it’s also much easier to shower and dry yourself off. On the road, body hair is very good at catching small insects, which can be very itchy – herefore I de-hair my arms as well as legs. I don’t race, so the speed gain is irrelevant for me, but it’s nice to know.

  50. George Gilles May 27, 2021 @ 2:36 am

    Wow startling results.

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