New Trends in Bicycle Fit: Knee over pedal spindle (KOPS)

Since working with some of the first systems of clipless pedals over 25 years ago, the "Plumb Bob" has been part of the Bicycle Fit Tool Kit. But how do we use it today? For as long as I can remember, we have questioned "Knee over pedal spindle". Tradition would have it to place a rider on their bicycle while mounted on a stationary trainer. The cyclists' feet are positioned at "9 and 3 o'clock" horizontal to the ground and then we would drop the bob from the protruding bone beneath the patella on the lower leg (tibial tuberosity) to the pedal. Then use the fore and aft adjustment on the seat rails to have the "Bob" fall on the center axle of the pedal.

Over the years, many attempts have been made to qualify the benefits to this position. It is still used today by many new and experienced fitters. My thoughts have always promoted this theory for the experienced cyclist already riding this position with no issues, but newer riders?

Many cyclists complain of the weight bearing on their handlebar. Moving the saddle to the rear of the bicycle reduces weight on the front end and can improve access to glutes and hamstrings for power. Knee would then be considered behind the spindle. Triathlon bikes with a fast forward position often are further forward of the spindle.

Once again, consider the options and work with an experienced fitter who can help you find your best position.

This is Rob and I encourage you to get “The Wright Fit”