Quote:
Originally Posted by compwiztobe
Many teams build bearing blocks for their drive train which hold the bearing and axle. This bearing block can slide forward and backward in the frame (moving the wheel with it) in order to adjust chain or belt tension.
Unfortunately, 254's website is under construction, so I can't pull up any of the great pics I know they had there. I'm sure someone else here can dig up some instructive photos.
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For the best example of a well executed sliding bearing block I would strongly suggest downloading some of 973's CAD models.