August 13, 2014

By: Dave Ripley 

When should a triathlete choose weight over aero in regards to their race day bike setup? The short answer is NEVER. I understand that several readers just puckered up to the point that you are now physically one with your chair. Relax, I will explain, using science and data. All based on the assumption...

August 6, 2014

Last weekend was the first Ironman branded race here in Boulder.  It wasn't the first Ironman.  That was back in 2001 and won by my good buddy, Denny Meeker.  It was sad that I would no longer be able to introduce him as the defending Ironman Boulder Champion.  But, it wasn't all another friend and local Boulder re...

July 24, 2014

A lot of fitters and shops that have been in the fit game for years have a decision to make.  They either bite the bullet and invest in fit technology or risk losing customers to a lesser shop down the road...who does.  With large bike brands getting into fitting...They see the power of controlling the output, which leads t...

July 18, 2014

An important role of the coach - filtering the bullshit that permeates the modern sporting environment

-Joel Filliol

I saw this tweet from Joel Filliol last week and started thinking about it on my run this morning.

There is definitely bad information out there, but that's not what I thought of when I read this.  The BS t...

July 13, 2014

By: Mat Steinmetz

Last week, published a short overview of the below piece.  There are some good discussion points in the comments section below the article.  Please use the contact form if there are anymore questions or if you'd like me to elaborate on something.

I’ve worked with Rinny on h...

May 15, 2014


Click Here to listen

In addition to working for Zipp, David is also a bike fitter and consultant for 51 SPEEDSHOP.

Topics discussed include:

  • The Four restrictive properties working against you on the bike are:

1. Aerodynamics
2. Gravity
3. Drivetrain Friction
4. Road Friction

  • 75-80% of aerodynamic drag comes from the...

April 1, 2014

By: Dr. Garret Rock

Recently, a drug rep was in our clinic telling me how their pain medications would be good for the pains commonly experienced by athletes. I immediately thought about the importance of this topic and figured I better share some words on the blog about it. Not all primary care docs, nurse practitioners,...

September 23, 2013

This article was originally published on

The new Felt IA appears to be a leap forward over the previous DA.  Without even looking at the improved aerodynamics of the frame, the ability to integrate storage and fuel is enough of a change to make it a great choice.  Felt made the decision, like many of it's comp...

August 13, 2013

This story was originally published on read the full article Click Here.

Aussie Joe Gambles snagged wins at 70.3 Boulder, 70.3 Syracuse and Rev3 Quassy recently. This fast Boulder, CO resident just got his new Trek Speed Concept race bike delivered and Mat Steinmetz of 51 Speedshop dialed it in. We recent...

June 12, 2013

It had been a few years since I had worked with Andy on his bike position. Over time, his bike setup had diverged from our initial work together. Why? Andy has probably had 10 different bikes since the last time I’d seen him. Attention to detail is a must when replicating positions. It may seem simple, but a few millimeters...

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