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07-20-2019, 11:01 PM | #1 |
The future is unwritten
Join Date: Oct 2002
Posts: 71,105
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The basic bicycle is a pretty simple design, but it took a long time and lots of dead ends to get there. I have a feeling clothing had a lot to do with it.
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The descent of man ~ Nixon, Friedman, Reagan, Trump. |
07-21-2019, 03:13 PM | #2 |
Read? I only know how to write.
Join Date: Jan 2001
Posts: 11,933
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Innovations were necessary because the human output too much torque. That large front wheel converted high torque - low speed into low torque high speed. With gears and chains, then smaller wheels could accomplish the same conversion. And provide the many different torque - speed ratios that a bike needs for changing terrains.
But again, it all about that simple concept taught in school science - the product of torque and speed. So that a much less than 1 horsepower engine (the human) could adapt to changing loads. |
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