Home

Why bother to check the math on an exciting and counterintuitive message? “Bicycles less efficient than SUVs!” Or, why you should never blindly trust a column by John Tierney of the NYTimes, and Someone is Wrong on the Internet!

Read the rest of this entry »

E Bikes in China

January 3, 2011

Was reading the put-charts-in-comments post at the oil drum.

Saw this comment:

Which included a link to this photo (and comments, GO READ, click photo for link): Photo by Steve Jurvetson, some rights reserved.

Update, for 2010, Jurvetson comment on his photo: “update from Weinert: E2W sales in China in 2010 were 28 million, bringing the installed base over 150 million.”
28 million, that’s growth.

Which in turn included a link to this presentation (pdf): http://www.jonathanweinert.com/presentations/E2W-CAFCP.pdf

Very, very interesting. Not too surprising to someone who rides a cargo bike, and thinks about electric assist from time to time. If I were running China, I would approve of this development.

See also so-when-we-run-out-of-oil-how-will-we-get-around (proof that I’ve been thinking about this)

Note that exclusive use of electric power is far less safe (higher mortality rate) than pedaling, because we need the exercise.

This presentation (Jurvetson presentation, linked from comments on picture below, requires Flash) starting at slide 16, also has some interesting numbers on e-bikes.

See also: Photo by Steve Jurvetson, some rights reserved.