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Wind Tunnel Testing

The thought of going into the wind tunnel and being fitted on my bike appeals to me, although I'm still not ready to drop $300 - $1,000 on this venture.  I was fitted on my bike a couple years ago, but that was a bike fit, not a wind tunnel fit.  I've seen a company that has a mobile wind tunnel set up, plus a company in Scottsdale that does testing, as well as others and I'm kind of wondering what the advantages are.  As far as an aero fit making a difference, I'm a moderately strong rider--I think I'm a bit under 4 watts/kg when I last did the computation.  I have a decent bike, power meter, race wheels, aero helmet, etc.  My race execution is better than it was before EN, and getting better.  I have won and lost races on seconds, although in Ironman races I'm usually in the teens in my age group, but a couple minutes would put me in the top ten and.... Basically, I'm looking for free speed on my bike if it's there.  Any experiences you can relate?

Comments

  • I guess what I'm asking is has anyone had a wind tunnel fit and what was the result? Are there any testers that you would recommend?
  • I went to FASTER early last year for a fit and time in the tunnel. The two were mostly seperate but related. The goal of the fit was to put me in the best position based on my mechanics and physiology. They did a thorough assessment starting from my feet on up. I ended up with a set of inserts for my shoes, new saddle, and more comfortable position overall that likely made a bit more power. We did a baseline in the tunnel and after the fit I had just slightly more drag. My goal for the tunnel time was really to optimize my equipment. I specifically wanted to focus on bottle placement and helmets. I ended up significantly reducing my drag by switching to the Rudy helmet over my Giro and also found more free speed with an aero bottle on my seat tube. It actually reduced my drag overall compared to no bottle there at all. Overall I'm really happy with the experience and the investment. It definitely wasn't cheap but I was at the stage where I thought it was time to sort out those details. I think I wrote a blog post about it last year - I'll check.
  • Joel, thanks for the information. Good to know. I too am reaching the point or will reach the point soon where I need to get everything sorted out to optimize the bike. I appreciate the feedback.
  • With this type of stuff, your cost is of course dramatically impacted by your location. Add a flight and bike transport into your mix plus your fit/tunnel fees and it adds up pretty quick.

    That said, I know more than a few people down my way who have gone up to LA for ERO Sport's velodrome testing. It's not wind tunnel testing per say, but achieves the same results and I'd almost argue it does so in more realistic scenarios. 

    All the same, don't take my word for it, check out DCR's recent write up here: http://www.dcrainmaker.com/2013/05/...ystem.html


  • Posted By Trevor Garson on 20 Jun 2013 10:39 AM

    With this type of stuff, your cost is of course dramatically impacted by your location. Add a flight and bike transport into your mix plus your fit/tunnel fees and it adds up pretty quick.

    That said, I know more than a few people down my way who have gone up to LA for ERO Sport's velodrome testing. It's not wind tunnel testing per say, but achieves the same results and I'd almost argue it does so in more realistic scenarios. 

    All the same, don't take my word for it, check out DCR's recent write up here: http://www.dcrainmaker.com/2013/05/...ystem.html

    True story: I know Alan Clack, one of the guys behind this system. We swam together at Emory and I recently interviewed him about his successful swim across the English Channel (!!). You can find the podcast in iTunes. He and I have talk about having camps here in LA and bringing people down to the velodrome (fookin' awesome venue) for testing. 

  • Posted By Trevor Garson on 20 Jun 2013 10:39 AM

    With this type of stuff, your cost is of course dramatically impacted by your location. Add a flight and bike transport into your mix plus your fit/tunnel fees and it adds up pretty quick.

    Not necessarily.  I used airline miles and hotel points for a quick overnight trip to AZ from VA Beach. My only cash cost outside of what I spent at FASTER was $50 for a rental car, plus dinner and a couple of beers.


  • I do have a business trip to Anaheim in August. I just don't know how I could get $800 through the budget committee this year for bike testing. Now very likely.
  • Steve, ping me closer to your trip. I'll reach out to these guys and see if we can create a more formal relationship with them.
  • Rich, I'll be happy to. I could volunteer to be a lab rat and do a write up. It would be good publicity;-)
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