Why 60mm & 90mm?

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Why 60mm & 90mm?

Postby branng » January 2nd, 2013, 10:09 pm

Hi guys, I'm curious to learn learn how the decision to develop 60mm and 90mm wheel depths originated.

In other words, do these wheel depths specifically impart aerodynamic advantages in their respective "depth classes" (i.e. mid-section and deep-section aero classes respectively) over say, a 62mm or a 86mm wheel (arbitrary numbers)? Or perhaps the decision to go with 60mm/90mm was driven by manufacturing considerations? Or perhaps it's simply just 60/90 (and the upcoming 30) are easy numbers to remember? Be interested to know.

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Joined: November 25th, 2012, 2:12 am

Re: Why 60mm & 90mm?

Postby Chris Thornham » January 14th, 2013, 12:33 pm

I'm late to reply. I'm sorry I missed this post! Let me answer the question.

We tested a variety of shapes in our original CFD studies. We kept all of the wheels we tested inside of the 30mm, 60mm, and 90mm range to help narrow the limitless number of options down. CFD is much cheaper but you could easily test 1000's of shapes if you wanted. In all honesty I think the 60 is a mm or two bigger than 60mm and the 90 is a little off too. I don't have my calipers here but to make things easier to remember we chose the names 60 and 90 because things were so close.

When we design our next line of products (we have no timeline plan for that yet) we will be expanding upon our testing. As a company grows you can afford better software, more testing, more time etc. We've got some ideas that I think people will really like.

But remember... there is no foreseeable future for our next line of products. We are still in our first year and are first and foremost working on cashflow (so we become stable), brand recognition, and streamlining production.

I hope that makes sense,
Chris Thornham
FLO Cycling: http://www.flocycling.com
FLO Blog: http://bit.ly/b3Zlpq | Twitter: http://bit.ly/bOQ08x | Facebook: http://bit.ly/d8KDhI
Chris Thornham
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