Why it makes perfect sense for this bike to have two gears and two chains
The Buffalo Bicycle Utility S2 has won an award from Eurobike and earned a German Design Award. With components designed by ...
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Science/Physics KS2/KS3: Will gears let children pull a piano uphill with their bikes?
SOPHIE:Well on the children's bikes, there's gears one to eight and those make a difference to how the bikes go. STEVE:I tell you what, let's set everyone to first gear. STEVE:Are we all in first ...