DIY BIKE ROLLERS
It is my personal belief that many people own bicycles, and that many of those people aren’t interested in riding for pleasure / exercise when it is raining, snowing, dark, etc. outside, and that many of those people would ride their bicycle indoors if they had a fun and challenging device that allowed them to do so, and that many of those people would build such a device themselves if given the encouragement and advice to do so. Thus, if my calculations are correct, this Instructable my indeed be appropriate for, and benefit many people.
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