Sunday, November 30, 2008

Electric Bike Photos









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Jia Bao Electric Bikes Features

In a systematic energy flow comparison, a grid-charged battery driving an electric motor will provide mechanical energy about ten times more efficiently than a human eating a typical US diet. For personal travel between 5 and 30 miles per day, the electric bicycle offers the lowest environmental and personal monetary cost, usually without increasing urban travel time" From Energy,Global Warming, and Electric Bicycles Energy Flow Analysis with an Emphasis on Personal Transportation1. Hill ClimbingThat may sound obvious, but it's the primary advantage. A good electric bike effectively flattens hills, increasing your average speed and eliminating the 'groan' factor when a gradient comes into view. Provided you supply a reasonable amount of effort, you can expect to climb hills of 1 in 10 (10%) on an electric bike with ease, and clear a maximum gradient of 1 in 7 (14%), or much more. In hilly country, the effect is nothing short of miraculous. 2. SafetyIt sounds unlikely, doesn't it? But the mathematics is compelling. Think of a steep and busy road, with cars climbing at 30mph. If you previously slogged up the hill at 6mph, but can tackle the same gradient at 12mph with an electric bike, you will see 33% fewer cars, and they will pass you at 18mph rather than 24mph. Or at least, we think that's correct. Whatever the figures, there's no doubt that an electric bike helps to keep you out of danger. The same general principle applies to road junctions - the faster your acceleration, the sooner you can get out of trouble. And with no need to rush the hills, you won't be tempted to ride downhill at breakneck speed... another useful safety feature.3. Personal FitnessSurely a conventional bike will keep you fitter? That, of course, depends how much - if at all - you use it. Research (b) has found that 46% of conventional bikes are used only once or twice a week, with a further 30% being used once a fortnight or even less. By contrast, a recent survey of electric bicycle owners reveals that a third ride their bike at least once a day and 81% use the bike at least once a week (c). The figures confirm our experience that an electric bike typically gets used at least twice as often as a conventional machine...
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Are electric bikes allowed on Burke-Gilman?


Q: Can electric-powered or electric-assisted bicycles ride on the Burke-Gilman Trail?
A: No, city officials say.
They're not allowed because the Burke-Gilman Trail is intended for people-powered transportation, Seattle Parks and Recreation Department spokeswoman Dewey Potter said.
"It is a rule and not a law, and there is some expectation that people will respect their fellow pedestrians and cyclists," she said.
Motorized foot scooters also are not allowed in bicycle lanes or on park pathways intended for recreation, according to the Seattle Department of Transportation. That includes the Burke-Gilman Trail.
Someone busted for riding an electric-powered scooter on some public trails would likely get a $124 ticket for violating a Washington Administrative Code.
WAC states people are prohibited from driving bicycles, motorbikes and motorcycles on department of natural resources developed recreation sites - unless such trails are posted for vehicular traffic.
But responses from city officials show this doesn't appear to be a common problem.
A Seattle police spokesman said officers don't patrol the Burke-Gilman trail for electric-powered scooter riders and was not sure what the specific penalty would be.
But officers would respond if called to a complaint, he said.
Spokespeople for the Seattle Parks and Recreation Department and the Department of Transportation said their departments don't patrol the trail and weren't sure of the specific penalty.
Seattle Municipal Code 11.46.010 states that "electric motorized foot scooters may be operated on roadways, shoulders, sidewalks, and alleys, but not on bicycle lanes, or public paths."
Same goes for Segway devices.
According to city law, a motorized foot scooter is defined as "a device with no more than two ten-inch or smaller diameter wheels that has handlebars, is designed to be stood or sat upon by the operator, and is powered by an internal combustion engine or electric motor that is capable of propelling the device with or without human propulsion."
Thanks to people who sent e-mails.
Click on the links for previous answers.
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