Lower Pressure is Good! Another Interesting Study On Bike Tire Pressure.

One of our students just emailed me this link to a study on the effects of tire pressure and energy output from the rider. While this is a study on road tires they have an interesting section on rough surfaces that can be applied to mountain bikes.  They use the word “suspension” to explain how the body must absorb shock if you have high tire pressure which robs you of a great deal of power (or causes you to use a great deal more power to maintain the same speed when using higher tire pressure).  As we explain in our camps lower pressure tires absorb shock better (the tire simply flexes instead of having to go up and over the bump (making your entire body weight go up and over the bump when seated and pedaling) giving you a smoother and more efficient ride.   My original post on this is here:

http://betterride.net/blog/2010/another-thing-you-can-buy-and-instantly-have-more-bike-control/

The new study (courtesy of Mark Shaw) is here:

http://janheine.wordpress.com/2010/10/18/science-and-bicycles-1-tires-and-pressure/

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