KGS Bikes Fitting vs. Retul – The Difference Between a Fitting Tool and a Fitting System
I recently received a call from a client in Dallas who noticed that one of the local stores is installing the Retul 3D Motion Capture System and wondered if it was better than the fitting she received from KGS Bikes. The explanation is a little more involved than a Q&A question so I decided to bump my scheduled ezine article for this one.
The KGS Fitting System, those by Serotta, WobbleNaught, Carmichael, Specialized, Cyfac, Body Scan, Fit Kit and others, use a procedural system that gets a specific outcome and these may or may not even use the data generated by a motion capture system.
Retul has become the gold standard in fitting tools in the past 18 months. The reason I say it is a fitting tool is that Retul can be used with any fitting system. It is 3D Motion Capture System that can accurately measure sensor points which are attached to rider or are indexed to a bicycle.
Retul has a competitor in Dartfish, which is a 2D motion capture system that I own. I am planning on purchasing Retul to augment my fitting services so here is an explanation of how I deal with fitting systems and motion capture systems. The crosshair laser that I use to measure bicycles is another reference tool that is independent of the fitting system. It helps to separate the two as there is overlap and thus room for confusion.






