Does anyone have any info on what bearing friction is compared to rolling friction? I've seen that increasing tire diameter lowers rolling resistance marginally, but I haven't found anything stating why it does that. Since rolling resistance is supposedly caused by both the ground and tire deforming, it follows that a harder compound and more pressure reduce the tire deformation and rolling resistance, but increases in diameter shouldn't do anything between the tire and the road. It will however, result in the bearings spinning less compared to the tire, so if the resistance of the bearings/races is greater than the resistance of the tire/ground, an increase in diameter should minimize this up to a point, and lower the total force the tire has to overcome. Thoughts, doughnuts, skunks?
Anyone (who doesn't have sealed bearings, I H8 'em
) try synthetic greases?
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