Energy requirements for a bike (useful article)

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Onidaren
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Energy requirements for a bike (useful article)

Post by Onidaren » Mar 04, 2013 1:22 pm

I have been researching my options for electric bicycles and recumbent trikes, trying to come up with maximum range for a minimum of dollars. I discovered something that may be useful to everyone here.

Here is an article that describes, in detail, some realistic energy calculations for a bike: http://physics.ucsd.edu/do-the-math/201 ... f-a-human/

The main focus of the article is to calculate the mpg equivalent of human pedaling, which is also a useful thing to account for.

melodious
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Re: Energy requirements for a bike (useful article)

Post by melodious » Mar 04, 2013 3:52 pm

Well written article. Justin @ Ebikes.ca made a similar approached article focusing on regular pedal bikes vs. ebikes argument on environmental impact and energy consumed.
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Re: Energy requirements for a bike (useful article)

Post by chvidgov.bc.ca » Mar 07, 2013 5:15 pm

I think that Justin used "full-system accounting", in terms of the energy needed to make the food, not just the efficiency of the food metabolism and the quantity of food. In either case - food production or fossil fuel production, there are a lot more "gallons to the gallon". Which gets into stuff like the SECOND LAW etc. - matching the energy quality to be "close to" the energy that is used - like using passive solar for low quality heating, or high quality electricity for what it is best for - creating motion, etc, which I couldn't easily explain. Justin could.
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