triathlon and family can mix

Wind Is Your Enemy

There are many options for storing hydration on your bike. But which is the best when it comes to the aerodynamic impact? Cue the debate.

I am not an engineer (thankfully) so I am going to leave the sciencey stuff to the experts. Cervelo has a couple of great articles that explore this very topic in way more detail than I could ever attempt. Hydration and Aerodynamics and Aerodynamics are a great resource to understanding how wind resistance effects a rider.

Long story short, I need to figure a way to mount a water bottle between my arms on my aero bars.

There are several options to a triathlete with a couple of bucks burning a hole in their wallet. But hey, we have enough stuff to buy just to get us to the start line. So I went about it a different way, DIY. After reading a couple of great articles on how fellow triathletes, even a professional, mount their bottles I gave it a rip.

Here is how I did it, a minor error, and the end result.

I first measured the distance between each aero bar and found it to be too close together. I broke out the allen keys and made a slight adjustment.


With my aero bars an adequate distance apart, I placed the cage in position with the four zip ties. Be careful not to tighten them too far yet as your final position depends on it. Once your position is perfect, tighten the ties as far as they will go.


Case in point, I place the heel of the cage too low at the stem and was unable to remove the bottle.


No problems though, I snipped the two ties and replaced them, making sure the heel was lower down angling the cage upwards. At this point I checked the position and all seemed well.


I tried to get at least one more click out of each side and with success, I tested the removal of the bottle. Voila, it moves pretty good each way.


A couple of notes for the future. I used my existing cage mostly because that is what I had on hand. The zip ties in the top mounting ‘slot’, yeah let’s call it that, interfere with the bottle when inserting it. It isn’t bad mind you, but I can see it being an issue in the future.

With my aero bars having the profile of mine, I may want to mount the cage backwards to make it easier to remove the bottle.

So there you go, total cost $0.80 and about 10 minutes. Even if it doesn’t work well, it was worth the effort.

Question: Have you tired something similar? Has it worked for you?


2 responses

  1. Cool idea, but won’t you get some drag on the face of the bottle? Also, have you ever seen how Cervelo has a unique designs on how water work with their bikes?

    April 11, 2014 at 6:50 am

    • I thought the same, but based on the data fron Cervelo, the setup actually reduces drag. Go figure. I have seen the ‘bladder’ type hydration systems, pretty awesome. Unfortunatley I can’t retro-fit it onto my P3C.

      Maybe time for an upgrade? P5 anyone?

      April 11, 2014 at 1:18 pm

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