HOW DOES IT WORK A BIKE.mpg

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1. this is retarded. it doesn't just change the revolutions, instead it mainly increases the torque dumb fuck
2. Ratios make it easier "kostik", listen a bit more. And that's all you learn in this video which constantly repeats itself. But then a little stat that a certain amount of turns from the ratio makes a certain distance. Could have summarised that in a 20 second video.
3. This video doesn't say why moving 50 teeth on the pedal wheel over 34 teeth on the cog easier, nor does it explain why when you pedal forward the back wheel moves forward, but when you pedal backwards nothing happens. Im glad these empty-info shows are gone. Thanks for the upload though
4. very useful, thanks you