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Old 07-25-11, 10:17 AM
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Originally Posted by laserfj View Post
Anyone know why people always put deeper in the back? I'm sure there is a reason.
Stability. 1) not being movable, the rear wheel affects bike handling less than a front in crosswinds so however much instability a rider can handle with a certain depth front rim, they will feel the same effect with a deeper rear. 2) By increasing area at the rear of the bike, a deep rear rim moves the center of pressure back and makes the same depth front wheel more stable than with a shallower rear.

Data from Zipp shows the reduction in drag from a deeper rear rim is about 75% of what is seen making the same change in front.
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