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Blog posts of `2010` `January`

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Folded electric bicycle kit assembling demonstration video - Friday, January 29, 2010
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Electric bicycle video demonstration - Friday, January 29, 2010
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The coming of the electric motorcycle - Friday, January 29, 2010

 

 
The petrol-engined Derbi on the racetrack
 
Electric motorcycles are in their infancy but there’s a realistic promise of electric motor performance that is more suited for the racetrack than that of internal combustion engines and infinitely better suited for the road. As the first electric bikes find their way onto racetracks and begin mixing it with two and four strokes, it appears you need three times the horsepower in a gas-powered motor to get a bike as fast as an electric bike. And then there’s the new 500bhp 67 Kg Symetron electric motor which should really kickstart performance electric automobiles and bikes. Personal electric vehicles have always struggled to capture the attention of the masses. While electric vehicles held their own in the early years of motoring and indeed held the land speed record for a time, battery technology was simply not ready and electric vehicles eventually perished against the power and range of vehicles powered by the internal combustion engine, not to mention Henry Ford’s cost efficient mass production techniques.

 

In the early years, mobility was the unique proposition which drove sales of all automotbiles but as penetration rose to the point where most people had a car, mass marketing was called upon to stimulate demand and since that time, automobiles and motorcycles have been largely sold on emotion.

Most registered road-going conveyances can do at least twice the speed they are legally allowed to do, and there’s a growing percentage that can triple the speed limit. For motorcycles, that percentage is much greater than with cars.

A high performance internal combustion engine snarls and growls and appeals to base emotions. Electric motors don’t snarl. In their most familiar form they drive rather than power a range of domestic appliances we do not equate with passion or brute force - electric toothbrushes and carving knives, hedge trimmers, can openers, screw drivers and, heaven forbid, dentists drills.

Despite a rash of high performance fuel cell, hybrid and electric prototype show cars from Honda, Toyota and Mitsubishi designed to promise the future, electric power is still largely regarded as the domain of tree huggers and greenies and the radical left. Performance electric cars are seen as at worst fictional, and at best, rare and expensive and they are not made by Ferrari, McLaren, Lamborghini, Koenigsegg or Bugatti. No-one would sell the children to buy one.

Which leaves a rather large gap in the market, because the time is already here when electric motors can “do the business.”

 

Brutally powerful electric motors are already here

Raser Technologies, a technology licensing company that develops and licenses advanced electric motor, controller and related technologies, released independent test results last month at the Society of Automotive Engineers World Congress in Detroit that measured the combined effectiveness of its P2 Symetron motor and controller technology working together as a drive system.

The test was at an independent dynamometer testing facility in Detroit and showed that a Symetron P2 motor driven by a matching Symetron controller consistently delivered more than 420 ft-lbs of torque on numerous test runs. In each test run more than 420 ft-lbs of torque was measured for a minimum duration of 60 seconds.

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Proposals would give U.S. Postal Service billions to electrify fleet - Thursday, January 28, 2010

 by Sam Abuelsamid  on Jan 27th 2010 at 11:37AM



A month ago Rep. Jose E. Serrano (D-NY) introduced a bill in the U.S. house of representatives that if passed would provide up to $2 billion to the United States Postal Service (USPS) for vehicle electrification. The money would be used to convert up to 15 percent of the agency's 142,000 vehicle fleet to plug-in capability.

Not satisfied Serrano's proposal, Rep. Gerald E. Connolly (D-VA) has put together a bill that would require 75 percent of the USPS fleet or 109,500 units to be switched over to electric vehicles. The turnover would happen over a period of five years. The Serrano bill, H.R. 4399, would establish five pilot programs of 4,000 vehicles each.

The vehicles, which have a duty cycle heavily biased toward low speeds and stop and go operation, are ideally suited to electrification. Using EVs for postal delivery makes sense and would significantly reduce operating costs. The problem is USPS keeps vehicles for a long time with a slow turnover. In order for the post office to make any sort of move to electrification, it will need a lot extra cash from the government. USPS lost $4.69 billion in the first nine months of 2009 and has no funds to spare. The bill seems unlikely to pass given the pressure to cut spending as the federal deficit balloons.
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Fast charger promises to re-fuel electric cars within 15 minutes - Wednesday, January 27, 2010

 

 

Think announces plan to support US launch of City electric car with rollout of new fast-charging technology

James Murray, BusinessGreen, 27 Jan 2010
Think City

One of the main barriers to adoption of electric vehicles could soon be overcome thanks to the development of new fast-charge technology that promises to recharge electric car batteries within a matter of minutes.

Norway-based electric car firm Think announced yesterday that it has teamed up with charging technology specialist AeroVironment to produce a new system that promises to recharge a flat battery to 80 per cent capacity within 15 minutes.

The two companies said that they will undertake a series of demonstration projects to support the imminent US launch of Think's City electric vehicle.

Think chief executive Richard Canny hailed the partnership as "a major leap forward for electric vehicles", predicting that "the development and deployment of very-fast-charge stations will help speed the electrification of automobiles in the US and globally".

The fast-charge system, known as AV level III, is based on standard developed by the Tokyo Electric Power Company (TEPCO), which Think and its battery supplier EnerDel have been testing for several months with development vehicles.

The tests have confirmed that the technology is ready for commercial deployment and Think said that it would now work with AeroVironment to roll out fast-charging stations to fleet customers and commercial sites such as shopping malls, convenience stores and parking garages.

Canny predicted that fast-charging infrastructure would not prove essential to most city-based customers, but would serve to support high use fleets such as taxi or courier companies.

"Our experience with more than 1,500 vehicles in use in Europe is that customers using the vehicle for daily commutes and trips around town quickly become comfortable with Think City's range of more than 100 miles," Canny said. "For them, the standard over-night charging is a very practical solution. Fast charging's importance will be for high-use fleets."

The announcement comes just days after California-based electric vehicle developer Zaprevealed that it has confirmed Zhejiang Jonway Automobile as its second Chinese manufacturing partner.

The two firms are to work together to produce an electric SUV that it aims to sell into the growing Chinese fleet market for electric vehicles.

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3:24! Fastest electric bike conversion kit in the world. - Friday, January 22, 2010
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Electric Cars Don't Use Fossil Fuel, but what's the Environmental Impact and Life Cycle of the Batteries? - Friday, January 22, 2010

 By Matt Oden

Updated on 01/22/2010 - 01:46
 
 
 
 

Electric vehicles are often hailed as the panacea, or silver bullet, for the transportation sector of the climate debate. However, how many of us truly understand the environmental impact or life cycle analysis of the batteries that must be built, maintained, and disposed of? Is it even possible to recycle a battery from an electric car and how long do they last? If these are questions you would like to know the answer to, then read on.

Most modern electric vehicles use a lithium-ion (Li-ion) battery packs. This includes widely acclaimed models like the Tesla S and Tesla Roadster Sport, and the Chevy Volt.

It is important to note that these batteries are a distinctly different type than what is used in hybrids like the Toyota Prius, Nissan Altima Hybrid, and Honda Civic Hybrid, which all use nickel-metal hydride (NiMH) batteries to date. However, it is important to note that many of these hybrid models will be switching to lithium-ion batteries starting as early as 2010 because of the numerous advantages this type of battery has over conventional NiMH batteries.

Significant advances have been made in lithium-ion batteries over the last 15 years. This is mostly due to consumer demand for small electronic devices, like iphones, that need to stay charged for extended durations of time, charge quickly, and not lose their ability to hold a charge out over time like older nickel-based batteries. 

Battery Production

Where Does Lithium Come From?

Lithium is the 31st most abundant element on earth, but there are not too many places that you can gather lithium in an affordable way. The most abundant source of lithium on the planet that is readily extractable is the Salar de Atacama, an ancient lake bed located 700 miles north of Santiago in Chile. It has been referred to as the Saudi Arabia of Lithium. Bolivia's flat salt desert of Uyuni also has extensive reserves of lithium, which is turning out to be a resource curse, as the current tone of nationalism clashes with indigenous rights.   

How is Lithium Mined?

Lithium mining is a relatively simple process if your an advanced engineering firm. You simply need to extract the brine (salt saturated water) from about 130 feet beneath the desert and bring it to the surface so the water can evaporate. As the water evaporates it leaves the lithium behind. It takes about 1 year for the concentration to reach about 6% lithium, at which point the liquid concentrate is put into tanker trucks and driven to a facility on the Chilean coast to be dried and purified before it is sold to market. 

One-third of the world's lithium carbonate is produced by a Chilean fertilizer and mining company named Sociedad Química y Minera de Chile S.A. (SQM). It is estimated that they are able to produce 1 ton for about $1200 and sell a ton for about $12,000. 

This picture shows an actual production unit in Chile: 

Where are Electric Vehicle Batteries Produced?

Lithium-ion batteries are generally not produced by the auto manufacturers themselves, but rather by firms that specialize in battery production. For example, Tesla partnered with Panasonic to produce batteries for the Roadster Sport and Toyota also decided to partner with Panasonic to overcome a production bottleneck. In the case of Panasonic, they produce their batteries in Japan under strict environmental laws.

How Much Greenhouse Gas Emissions are Associated with Battery Manufacturing?

Roughly 2.5 Metric Tonnes of CO2e are produced when manufacturing an electric car battery.

To determine this figure I used the Carnegie Mellon Economic Input-Output Life Cycle Assessment tool. This tool allows you to determine the amount of greenhouse gas emissions associated with a particular dollar amount spent (e.g., $500) in a specific industrial sector (e.g., leather goods).

For this example I looked specifically at the North American Industry Classification System (NAICS) industry code 335912, Primary Battery Manufacturing, which includes lithium batteries. 

I found that a new battery for an electric car costs anywhere from $2,500 to more than $10,000, so I decided to use a value of $5,000 for my input variable to determine the amount of greenhouse gases. I generated the following custom graph to show my results: 

Battery Use

How Long Do Batteries Last?

It has been estimated that electric vehicle batteries last up to 180,000 miles. 

Tesla estimates that the battery life for their model S will be between 5 and 7 years, but could be as high as 10 years if you take proper care of your battery. I also imagine that the climate you live in has some impact on the battery life. Many of us have experienced that dead cell battery in your ski pants; move it into your underwear for awhile and wahla - your battery works again for a little bit. I would expect that if you had a tessla in southern California it would have a different lifespan than Aspen Colorado.

Battery Disposal

Can You Recycle Lithium-ion Batteries?

Yes. Tesla recycles all of the batteries from their vehicles. In fact, they build the recycling cost into the purchase price of the vehicle, so there is no question what happens when the time comes to turn the battery over. To read more details about this process you can read Tesla's blog. 

Can You Recycle Nickel-Metal Hydride Batteries?

Yes. Toyota recycles all of their Prius batteries and offers a $200 bounty to dealerships to ensure that the batteries make their way back to Toyota. 

What About Electric Car Greenhouse Gas Emissions?

The greenhouse gas emissions that electric vehicles produces obviously don't come from the tailpipe, but from the electricity production facility. This can be a wind farm, a coal-fired power plant, a natural gas-fired power plant, a solar farm, or any other type of facility that is designed to generate electricity. Therefore, the amount of greenhouse gas emissions that your electric vehicle is responsible for will vary entirely on how the electricity is being produced that charges your vehicle's battery, but that's not the end of the story. 

The efficiency at which small combustion engines found in a typical automobile produce energy that is physically transferred to propelling the vehicle forward is about 20%. In electric vehicles the efficiency transfer from the battery to the forward motion can be as high as 80%. This is a significant leap forward, but that's not the end of the story either. 

Small combustion engines are significantly less efficient at creating usable energy than an industrial-scale power plant; even when you take transmission and distribution losses into account. Therefore, using an electric vehicle, especially one powered by renewable resources, is incredibly efficient. 

This chart by Tesla highlights these efficiencies:

Image from Tesla (http://www.teslamotors.com/performance/well_to_wheel.php)

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Don't fear the EcoBike - Tuesday, January 19, 2010

 

EcoBike Elegance
Photo: Segway of Ohio

At the Interbike trade show last month, one of the big buzzwords was e-bikes. Short for electric bikes, the concept has elicited a lot of different reactions from the bicycling public. And this is honestly to be expected, as the cycling world is hardly homogeneous. But many people don't know much about the e-bike other than it's a bike with some electric assist features.  

Columbus riders can find many of the answers they're looking for with Jared Cavalier at Segway of Ohio in the Short North.  Talking with Jared is a pleasure, as it always is when you're talking to someone with a true passion for what he's doing. And this passion is in redesigning the way that we get around town, and making it easier for everyone to do. Segway of Ohio has Segways, of course, but they also have lines of other vehicles including folding bikes, powered skateboards, and the EcoBike.  

First, a bit of discussion of the EcoBike. The bikes themselves come from Europe, where cycling culture is more accepted into the mainstream and bike companies don't focus nearly as much on recreation as they do here. Bikes in Europe, though they have the high-end mountain and road bikes, are generally more functional, and just another form of transportation. And the EcoBike follows that mold with one tiny difference: you get a bit of help while riding.

EcoBike comes in three models in the US market: the folding Vatavio, the urban Elegance model, and the more rugged Adventure mountain bike model. All of them have a 36 volt Lithium Ion Battery and a 290 watt brushless rear hub that provide the assist. The wheels on the Elegance and Adventure model are standard 26 inch wheels, and the folding Vatavio has 20 inch wheels (which Jared said does tend to change the ride somewhat significantly, making it not quite as smooth as the non-folding models).

Other than that... these things are bikes, pure and simple. Jared is pleased to point out that they are customizable with parts that come from any bike store (with the exception of the rear wheel which holds the motor in its hub and the battery casing). If you wanted to modify yours to include a Brooks saddle, change the tires to something a bit more sturdy (though they come with Kenda puncture-resistant tires), and put on some panniers, you can do so. If you want to put your kids in the Burley trailer behind the bike and get them to school or the park, you can. All the models come with a rear rack attached (complete with bungees), a rear light, a double-kickstand, full fenders with mudflaps, and a full chainguard.

The motor is fully electric - no gasoline required. A full charge takes 4.5 hours, and that'll last you for up to 25 miles of "assisted riding" (to be explained momentarily). Naturally, your results may vary depending on your route, how much you pedal, etc. The battery lifts out of the bike easily and is about the size of a small shoebox. And if you are planning on some serious distance, you can get a second battery which fits perfectly onto the rack of the bike.

Jared points out that the EcoBike does not have regenerative braking or any in-ride-recharging ability (like a hybrid car does), but that's one of the features that keeps it inexpensive. And inexpensive is, in this case, under $2000. Before you gasp, go to your local bike shop and look at the prices of even some of the mid-range road bikes - the cost is similar.

So now the big question: how does it ride? Well... the answer is simple. It rides like a hybrid or comfort bike.  The ride is very comfortable, even on the brick streets of the Short North. And pedalling without the power assist is, while not perfectly easy, not any harder than riding a commuter bike when fully loaded for work. The six speed Shimano Tourney gears on the bike allow you to put the pedalling intensity right where you want it, and it shifts very smoothly with a twist grip.

The most pleasant surprise of riding a bike with an electric assist is felt immediately upon beginning to pedal.  One is immediately propelled forward ever-so-slighly by the assist motor which gives a little more "oomph" in getting off the line - solving a frequent issue mentioned by cyclists in that they feel they're holding traffic up a bit too much as they pull out. And going up the hills is much easier, obviously. You barely feel that there's any assist as you ride, but when your legs aren't burning as you hit the top and the flop-sweats fail to leave their mark on your work clothes, you'll appreciate just how much work the bike is doing for you.

Top speed on the bike is about 20 mph (depending on conditions, of course), which puts it right at the same amount of speed as most bikes - thus removing the question of "do bikes like this belong with non-powered-bikes?" The answer is yes. And if you want to ride slower, that's no big deal either. Ride slower. The bike's not going to push you to go faster with its motor behind your work - it gives you a bit of help when you need it, that's all.

To switch between assisted-pedal mode and full "scooter" mode is done with a flip of the right thumb.  Jared said up front that it's not built to be a full scooter - it's a bike, period.  And the scooter mode is slightly sluggish when compared to an actual scooter, but it's not meant to be ridden in full scooter mode.  It's a bike.  

This bike is really the answer to a lot of questions regarding bike commuting. You still get exercise, there's no doubt about that. You're still moving and pedalling. This bike just makes the ride in traffic and among faster vehicles that much easier.

So for those who don't want constant changes of clothing as they ride to and from work, want to arrive at work looking fresh and ready to go, or even have some physical challenges that might keep them off a standard bike, this is a more than acceptable answer.

So don't fear the e-bike. Try it out and judge for yourself.

 

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Fix Flat on electric -scooter e-bike - Friday, January 15, 2010
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Just a video - Friday, January 15, 2010
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