Thursday, June 21, 2007

mpg of bikes

In my previous post, commenter Jacob added that a human can travel more efficiently by bike than by foot, which shouldn't surprise anyone who's ridden a bike.
He ran the following calculation in Google--(31,548 Calories / gallon / 563 Calories / hr * 12 mi / hr) in mi / gallon. That is, a 155 lb person cycling at 12 mph will get 672 mpg. At 10 mph that person will get roughly 747 mpg.
I'm pretty sure this can't be as good as it gets. Anyone know of any vehicles that are more efficient than bikes? I imagine some engineering students have worked on this problem and outperformed ye olde bicycle.

9 comments:

Ethan said...

Recumbent bikes with wind wraps, and body wraps may increase bicycle MPG.

Dan said...

What about skateboarding? Though slower than a bike, a good longboard can still move pretty fast and takes less effort than a bike. On flat city streets with stop and go traffic (like LA or NYC) a skateboard might be more efficient than a bike because of much less initial effort needed to start moving after a stop. However, on a skateboard going up or down any sort of serious hill gets a bit more dicey...

kevin said...

The only thing that moves more efficiently than a human on a bike is a human on iceskates.

Gus said...

i've moved pretty easily, far and fast while hang-gliding however not really a risk i'm willing to take to get from a to b over oakland

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