Happy New Year
We are looking forward to another great year! We wish all our readers joy, happiness and many great rides in 2019. See you on the road!
—The BQ and Compass/Rene Herse team
Photo credit: Ryan Francesconi
We are looking forward to another great year! We wish all our readers joy, happiness and many great rides in 2019. See you on the road!
—The BQ and Compass/Rene Herse team
Photo credit: Ryan Francesconi
You may have seen the headlines that global temperatures have hit record highs each of the last three years.... read more
We are donating all proceeds from our calendar sales for the next day to help the Museo del Ghisallo... read more
Our Rene Herse cranks are available with chainrings from 24 to 52 teeth, in single, double and triple configurations,... read more
The 2011 Oregon Manifest Constructor's Design Challenge will be held in Portland, Oregon, on September 23-24, 2011. The goal... read more
Let's face it: Life isn't the same as it was just two weeks ago. We're all in this together,... read more
[youtube http://www.youtube.com/watch?v=hAwXw_GGtY4?rel=0&w=640&h=360] Open made a video to introduce their facelifted U.P. wide-tire racing bike. They went for a beautiful ride... read more
It's amazing to me that the big picture often gets overlooked. I am not talking about willful distortion, but... read more
Keeping everything we sell in stock hasn't been easy: Lockdowns in the U.S., Europe and Japan have interrupted production,... read more
It's official: A new year has started. As 2020 recedes into the past, we're looking forward to a new... read more
Comments (3)
Jan, does the same reasoning hold true for suspension losses generated by the rider? An example might be climbing a steep gradient while in the standing position. The variability of force exerted during the pedal stroke by the rider is causing the hysteresis. Suspension losses might be low to minimal in such an instance? Another example might be during the early part of a sprint. Thanks. Eli
Suspension losses probably depend on the rider. I can imagine that a rider who pedals hard has different (lower?) suspension losses than a rider who coasts. After all, you feel the discomfort of vibrations differently, and the U.S. Army study showed that discomfort equals energy loss.
As you mention, a rider who’s out of the saddle doesn’t vibrate as much. I never thought about whether this reduces suspension losses. It would be hard to test, as we can’t measure the suspension losses directly, and riding out of the saddle also increases wind resistance… but it would be interesting to compare power output at the same speed both sitting and standing, on the rumble strips and on the smooth pavement next to the rumble strips. With those four measurements, we should be able to get an idea.
Happy New Year to all at Compass Cycles, Bicycle Quarterly, and Off the Beaten Path !
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