Watch the amazing transformation of a broken bike rear wheel hub as skilled hands restore it to perfection. From disassembly ...

If you’ve ever done maintenance or repair work on your bicycle, you’ll know that positioning ... but then you can’t work on the wheels. You can place it upside-down, but then the shifters ...

His solution to balancing the bicycle was a reaction wheel that keeps the bicycle upright at all times. A bicycle is basically an inverted pendulum; something we’ve seen controlled in a number ...