[EVDL] Singapore firm to build Dendrobium Electric-supercar
http://www.straitstimes.com/lifestyle/motoring/singapore-firm-to-build-e-supercar
Singapore firm to build e-supercar
[2016/02/05] Christopher Tan
[image
http://www.straitstimes.com/sites/default/files/styles/x_large/public/articles/2016/02/06/11.jpg?itok=4r78jN3h
The Dendrobium supercar is named after an orchid genus. PHOTO: VANDA
ELECTRICS
]
A Singapore SME (small and medium-sized enterprise) is teaming up with an F1
engineering giant to make an electric supercar called Dendrobium.
With an initial investment of $10 million over the first two years, Vanda
Electrics - a unit of family- owned Wong Fong Engineering Works - expects
the two-door, two-seater hard-top named after an orchid to be ready for next
year's Geneva Motor Show.
Wong Fong says Vanda Electrics has already secured funding from Titan
Capital, a United States-based lender.
The $10 million will just be to get the first unit of the carbon-fibre
aluminium car ready for the show, which will be held in March next year.
Should production commence, "we know it will be in the excess of $150
million for land, factory, equipment and manpower", a Wong Fong spokesman
says.
"We are prepared to invest as necessary," she adds.
Wong Fong has engaged Williams Advanced Engineering, an engineering services
and technology unit of the Williams group of companies, to embark on the
ambitious project.
Williams, which is British, has one of the world's top F1 teams.
The Wong Fong spokesman said the Dendrobium will be able to hit 100kmh in
under 3 seconds, "putting it comfortably in the performance range of
hypercars".
It will use lithium-ion batteries similar to the lightweight 200kW pack
found in Formula E race cars, which are supplied by Williams.
The car will have all-wheel torque vectoring. The company declines to give
details such as its total output, range and top speed.
The company is responsible for the interior and exterior design of the car,
the basic architecture (which includes the way the doors open), as well as
the branding and positioning.
Williams is expected to release more information about the car next month.
[© 2015 Singapore Press]
...
http://business.asiaone.com/news/singapore-firm-build-e-supercar
Singapore firm to build e-supercar
Feb 07, 2016
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[EVDL] Exploding cheap li-ion batteries that'll knock your teeth out
'Avoid vaping on a hoverboard = a lose-lose' http://www.wired.com/2016/02/exploding-e-cigs-and-vape-pens/ VAPE PENS AND E-CIGS ARE BLOWING UP. LIKE, LITERALLY 02.10.16 JOSH VALCARCEL SOME PEOPLE HAIL vaping as a safer alternative to cigarettes, arguing that there’s no tobacco smoke, so it’s got to be safer. It remains to be seen if that’s true, and there is some evidence that the stuff inside vapes and e-cigs is toxic. But beyond that, there’s the fact these things occasionally blow up. You hadn’t heard about this? Some pretty gruesome reports are starting to pile up. In November, a man in Colorado broke his neck, lost some teeth, and suffered burns and facial fractures when his e-cigarette exploded. A 15-year-old California boy lost half a dozen teeth in a similar mishap last month. In Tennessee, another teen is recovering from the severe burns caused when a vaping pen caught fire in his pocket a few weeks ago. Statistics outlining just how prevalent this is remain thin, but the Federal Emergency Management Agency, of all things, identified 25 cases of e-cigarette explosions in the US between 2009-2014. However, that list is based only on incidents reported by the media. Given that vaping’s seen a surge in popularity since then—last year, the CDC reported a three-fold increase among middle- and high school students alone—the number almost certainly is rising. A quick Internet search shows at least a dozen explosions in 2015 alone. The culprit, to probably no one’s surprise, is the lithium-ion batteries. Hot N’ Cold Instead of burning tobacco, vape pens and e-cigs use a small lithium-ion battery to heat an aerosol cartridge to release a vapor that’s inhaled. As in any device that uses lithium-ion batteries, you can run into problems when the battery is damaged or subjected to extremes in temperature. A short circuit can cause the battery to overheat, catch fire, or even explode. These problems tend to occur in cheap consumer gadgets that are quickly churned out of factories. All in all, it’s relatively rare, but obviously it happens—most recently, in hoverboard scooters. “With lithium-ion batteries in general, when you operate one outside its safety window, there’s a tendency where things can go wrong,” says Venkat Viswanathan, who teaches mechanical engineering Carnegie Mellon University. That window is startlingly small: Viswanathan says batteries are best kept between 50 and 115 degrees Fahrenheit. It’s February, and all but four US states are averaging temperatures below 50 right now. In some cases, the problem is compounded by cheap lithium-ion batteries that “don’t have the luxury of using sophisticated management systems,” Viswanathan says. That can lead to dangerously over- or under-charged batteries. Dendrite is another potential problem. Dendrite is a conductive filament that can form over the course of several charge/discharge cycles, especially if the battery is rapidly charged. This stuff can spread like a weed, eventually bridging the electrodes and causing a short circuit. “You have basically something equivalent to gasoline inside your lithium-ion battery,” Viswanathan says, “and so immediately it catches fire.” Lithium-ion batteries power a whole lot of gadgets of course, and often do so without trouble. But things like mobile phones and laptops and electric vehicles typically are manufactured to exacting specifications and rigorously tested, both by the company and outside experts. The Smoke-Free Alternative Trade Association, which represents for vape-makers, said it “cannot speak to user error or on behalf of a manufacturer for their device” and, “If there is truly an issue with a specific device, similar to a lap top or cell phone manufacturer, that company should take the appropriate action.” And to be fair, it’s not uncommon for users to modify their vaping devices, and any number of websites offer tips on how to do just that. The industry trade group duly notes that hacked and modded devices can pose a safety risk. Smoking Rules All of which begs the question what, if anything, is being done about this. Most regulatory discussions about e-cigarettes and vapes focus on the Food and Drug Administration’s critique of the chemicals found in the devices. The FDA is about to introduce rules regulating the industry, a move that could classify electronic cigarettes and vaping products much like tobacco. Products would carry warning labels, sales to minors would be banned, and you’d see restrictions on things like offering free samples. But little has been said about the safety of the devices. The Smoke-Free Alternative Trade Association says it supports “reasonable science-based regulations,” but opposes anything that might “stifle innovation.” But it argues “e-cigs and vapor products are technology products, separate and distinct from combustible tobacco.” They liken them to consumer electronics. That’s where things get tricky. Asked if it has any safety concerns abou
[EVDL] EVLN: $20k Victory Empulse TT Electric Motorcycle Ride Review r:130mi
http://www.sportrider.com/mainstream-electric MAINSTREAM ELECTRIC | VICTORY EMPULSE TT RIDE REVIEW [20160208] Tom Montano [images / Victory Motorcycles, Barry Hathaway http://www.sportrider.com/sites/sportrider.com/files/styles/medium_1x_/public/sri1601_vic_lead2-logo_0.jpg?itok=80KuPRjF 2016 Victory Empulse TT http://www.sportrider.com/sites/sportrider.com/files/styles/medium_1x_/public/sri1601_vic_detail1-logo_0.jpg?itok=Wg2y_1Sy Slightly revamped bodywork makes the Victory Empulse TT look slicker and hides the battery packs and liquid-cooling setup for the internal permanent magnet AC induction motor visible just behind footpeg http://www.sportrider.com/sites/sportrider.com/files/styles/medium_1x_/public/sri1601_vic_detail4-logo_0.jpg?itok=UAHLolfn We also got to spin a few laps on the Isle of Man TT Zero racebike that Lee Johnston rode to a third-place finish. Notable differences include a more powerful motor, no transmission, and K-Tech-tuned Öhlins suspension http://www.sportrider.com/sites/sportrider.com/files/styles/small_1x_/public/sri1601_vic_detail2-logo_0.jpg?itok=DtHw9-kg While the regenerative braking system helps with slowing the Empulse TT, the majority of braking is handled by the Brembo four-piston/radial-mount calipers and 310mm discs. Braking power was good but high-effort http://www.sportrider.com/sites/sportrider.com/files/styles/small_1x_/public/sri1601_vic_detail3-logo_0.jpg?itok=Xxyrms6M Strangely enough, the Empulse TT’s dash includes an analog tachometer along with an LCD info panel showing speed, gear selection, battery status, estimated range, and system status ] Victory Motorcycles takes a bold step forward with its Empulse TT electric bike Electric vehicles are becoming quite common these days, but it’s the automobile that pretty much dominates the consumer electric-transportation market. You see Teslas everywhere now, and all the major auto manufacturers have an electric or hybrid model in their lineups. But how often do you see an electric motorcycle on the road? The problem is that electric motorcycles are a hard sell, and building an electric bike can be very costly, especially since the range is still very limited compared to a gasoline engine. Although a few eBike manufacturers have been at it for a while, no major existing motorcycle company I know of (i.e., the Big Four Japanese companies or their European counterparts) have produced a road-going eBike, and that gives cause to wonder: Is it worth it? Still, Victory Motorcycles seems to think it is, and the company feels the time is right to get into the game. Victory’s parent company, Polaris Industries, recently purchased the motorcycle division of Brammo, Inc., and the Ashland, Oregon-based company is one of the few that has produced a road-going eBike with relative success. BIKES First look at the 2016 Empulse TT, Victory's first all-electric motorcycle. But perhaps the real reason behind the introduction of the new 2016 Victory Empulse TT is the rebranding of the Victory line of motorcycles. Victory makes great cruisers, but it appears as if the company is looking toward attracting a broader demographic of riders. Ventures such as the Project 156 Pikes Peak runner, or the Victory Pro Stock dragbike team, or the 2015 Isle of Man TT Zero race (where Lee Johnston finished third on one of the team eBikes) are all-new territory for what was not so long ago a cruiser-only bike company. By entering into the eBike market, Victory is hoping to gain more exposure, which is part of its new “Building the Future of American Muscle” plan. You could even reason that inviting Sport Rider to a Victory launch is a real testament to the commitment in the new direction the company is taking. The 2016 Victory Empulse TT is not that dissimilar to the last Brammo Empulse from which it was derived. Naturally, Victory took what was there and revamped it by adding its own flair to produce the new model. The Empulse TT features a new Brammo Power lithium-ion battery pack with a capacity of 10.4 kilowatt-hours (kWh). The new battery pack is rated at 103.6 volts, with a maximum of 117.6 volts; what that means is that the new battery has a 10-percent increase in capacity over the previous model. The liquid-cooled, internal permanent magnet AC induction motor produces 54 hp and 61 foot-pounds of torque and is fitted to a six-speed transmission complete with a multi-plate hydraulic wet clutch. A dual power mode option is now standard issue, with Sport mode offering full battery output for maximum power. Another key feature is the 3.6kW onboard charger, which not only allows you to plug in at any current 240-volt charging station but is also the fastest in class. In just 3.5 hours you will be fully charged, with 80 percent in two hours. Victory brought the assembled gang of journalists to ride its new Empulse TT at High Plains Raceway, about an hour east of Denver, Colorado. The track has a good mix of fast and slow corners, pl
[EVDL] EVLN: Musk Getting Serious About Electric VTOL Planes
http://www.ubergizmo.com/2016/02/elon-musk-getting-serious-about-electric-planes/
Elon Musk Getting Serious About Electric Planes
02/07/2016 Adnan Farooqui
Elon Musk has established Tesla has a major player in the electric car
industry and he’s been toying with other ideas to further expand Tesla’s
knowledge of all things electric. No wonder the company even makes battery
packs to store energy that can power your house as and when required. He has
been thinking about electric airplanes for a while now and it appears he’s
getting serious about this.
Last year Elon Musk talked about having plans for an electric plane that he
couldn’t quite pursue since he didn’t really have a lot of free time on his
hands, but that doesn’t mean he has stopped thinking about air travel
powered by a renewable energy source.
During a recent talk at Texas A&M, Musk was asked about what his next great
idea was. He responded that he has been thinking about a vertical takeoff
and landing electric jet “a bit more.” “I think I have something that might
close. I’m quite tempted to do something about it,” he added.
Musk didn’t go into much detail about this idea but, nevertheless, it got an
enthusiastic response from the crowd. This really is the first indication
from the Tesla and SpaceX CEO that he might be willing to do something about
the electric jet idea that he has been toying with in his mind for some time
now.
It’s obviously easier said than done. There will be a considerable amount of
hurdles that Musk and team will need to cross before they’re able to come up
with an electric jet that’s safe enough to ferry passengers, doesn’t mean
that it can’t be done, though.
[© ubergizmo.com]
http://www.carscoops.com/2016/02/elon-musk-talks-about-electric.html
Elon Musk Talks About Electric Airplanes ...
February 7, 2016 Bogdan Zoltan
Tesla CEO Elon Musk is known for his often less than conventional business
ideas, though, some of those might not be as crazy as you think.
Appearing as a special guest at the Hyperloop Pod Award ceremony at Texas
A&M, the businessman attended a Q&A during which he was asked – among other
things – what his “next great idea” was, to which he replied:
"I have been thinking about the vertical takeoff and landing (VTOL) electric
jet a bit more. I think I have something that might close. I'm quite tempted
to do something about it."
Indeed, it seems that the non-existent electric aircraft niche appears to
allure the billionaire, as nobody is currently investing in this intriguing
technology.
Of course, it’s not certain if the idea will follow through, but Musk isn’t
the kind of guy who backs down from his plans. He appears to be quite
stubborn once his mind is set, as he explained when asked how he convinces
people his ideas aren’t crazy:
“That’s generally what they thought. In starting SpaceX, they definitely
thought I was crazy. One of my best friends compiled a long video of rockets
crashing and made me watch the whole thing. Some other friends of mine who
were involved in rocket startups said it was a terrible idea, but I kind of
thought we had a really tiny chance of succeeding anyway.”
[© carscoops.com]
...
http://learnbonds.com/126695/tesla-motors-tsla-ceo-elon-musk-quite-tempted-to-build-vertical-takeoff-electric-jets/
Tesla Motors CEO Elon Musk ‘Quite Tempted’ to Build Vertical Takeoff
Electric Jets
February 8, 2016
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[EVDL] EVLN: Actor Dwight Schrute loves & does selfie w/ his i3 EV
'First i3 EV in Fiji'
http://www.bmwblog.com/2016/02/05/rainn-wilson-of-the-office-loves-his-bmw-i3/
Rainn Wilson of “The Office” loves his BMW i3
February 5th, 2016 Horatiu Boeriu
[image
http://cdn.bmwblog.com/wp-content/uploads/2016/02/bmw-i3-dwight-schrute-750x406.jpg
(Dwight Schrute does selfie with his i3 EV)
]
Rain Wilson aka Dwight Schrute from “The Office” is not one of the quirkiest
and funniest characters on the popular TV series, but also seems to enjoy
the quirkiness of the BMW i3 electric car. A caption on a selfie posted on
his Instagram account reads the following: “Selfie with i3. Thank you @BMW
for creating such a lovely and practical electric car.”
In the show, Dwight has often reference a 1987 Pontiac Trans Am which fits
his on-TV personality, but in real life, Wilson is more of a cool guy who
enjoys the practicality and high-tech of the i3.
His i3 features the Arravani Grey paint job paired with the typical blue
accents of BMW i cars.
Rainn Wilson of The Office loves his BMW i3
In its first full year of sales in the U.S., the BMW i3 electric vehicle
sold to 11,024 customers helping BMW break last year’s all time sales
record. In 2016, the figure is likely to go up even more so the odds of
seeing celebrities behind the wheel of an i3 are increasing every day.
In the end, California is known for the Hollywood celebrities and their love
for green and quirky-looking hybrids or EVs.
[© 2015 BMWBLOG.com]
http://www.fijitimes.com/story.aspx?id=340618
First of its kind in Fiji
February 06, 2016 ... Take for instance the all-electric BMW i3. Yes, that's
right, the all-electric BMW i3 car is here! The first of its kind and the
only one in Fiji. Car owner and Mark One Apparel managing director Mark
Halabe shares his pride and joy with The Fiji Times ...
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[EVDL] EVLN: Rare Tesla Tour In Fremont-CA EV-Factory (v)
http://sanfrancisco.cbslocal.com/2016/02/07/tesla-allows-cameras-in-fremont-factory-for-rare-tour/
Tesla Allows Cameras In Fremont Factory For Rare Tour
February 7, 2016
[video flash]
FREMONT (CBS SF) — There’s a certain amount of mystery surrounding Tesla’s
Fremont electric car plant, but KPIX 5 recently got an exclusive look
inside.
It was the first time in five years that Tesla let a television crew inside
the factory.
The people KPIX 5 cameras captured weren’t tourists waiting to get a look
inside Tesla; they were customers whose cars — already purchased — were
being assembled on the line right now
But before these newly minted Tesla owners can go inside, they all have to
surrender their smart phones and cameras. Tesla doesn’t allow any device
that can take a picture or video.
The mile-long, 5 million square foot factory was so big, the KPIX 5 crew
needed a golf cart to get around. At almost every stage of the manufacturing
process, there’s a “wow” moment.
There are hundreds of robots working at a variety of stations that make the
factory look more like a surgical ward than an auto plant.
The robots are among the largest in the world. They have names like cyclops
and thunderbird. They can do five different things at once. They can weld
and rivet and lift up a car.
Unlike many car manufacturers, most of the components are made right here in
the factory. Other car companies bring in material from outside suppliers.
“That’s very true,” said Tesla spokesman Alexis Georgeson. “We start with
these 20,000 pound rolls of aluminum. We stamp them into body panels. From
the very beginning all the way through the production process.”
Virtually everything is made on site, including the 17-inch dashboard screen
and electronics.
“It’s really kind of a computer factory inside a car factory,” said
Georgeson.
Then KPIX 5 got a peek at something almost never seen by anyone outside of
Tesla: the installation of the car’s battery pack. Each weighs just over
1,300 pounds.
The battery sits along the entire floorboard of every sedan and allows it to
go over 200 miles on a single charge.
“Every single car built here already has an owner. They have designed that
vehicle,” said Georgeson.
Including the new Model X.
“It’s the first all-electric SUV ever made. It’s also the fastest
acceleration SUV ever built,” said Georgeson.
And next up for the assembly line, Tesla says it will introduce the Model 3,
a mid-priced $35,000 electric car for the masses.
Which might mean they will need more trolleys to take all those new owners
on the factory floor.
[© 2016 CBS Local Media]
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Re: [EVDL] News Release: Ontario Making Electric Vehicles More Affordable
Wow, even more rebates for Ontario, where as the province I live in (Nova Scotia) has never had any... Has anyone ever successfully petitioned their government to get such credits in place? Would love to hear how they got it done. I'm not into politics but I will speak up for the right cause, and this is such! Thanks, Dan On Wed, Feb 10, 2016 at 9:25 PM, Paul Wujek via EV wrote: > News release from the Government of Ontario, $10k to $14k rebates on EVs: > > > https://news.ontario.ca/opo/en/2016/02/ontario-making-electric-vehicles-more-affordable.html > -- > *Paul Wujek* about <http://goo.gl/3jnMdX> > ___ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Read EVAngel's EV News at http://evdl.org/evln/ > Please discuss EV drag racing at NEDRA ( > http://groups.yahoo.com/group/NEDRA) > > -- next part -- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20160211/3adb143d/attachment.htm> ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] EVLN: Venturi, OSU VBB-3 Electric Racer targets 372mph record 0-60mph:2s
> > I though I heard of sub 3 second time reported, not theorized. > I recently read of a car that does 0 - 60 in 2.2 seconds. Tesla is FAR from optimum. > > I have never gotten an explanation I could understand of how C_friction can > exceed 1 as I have heard regarding dragsters. > I'm not sure why you would assume 1.0 is the mas coefficient of friction possible. Just aluminum to aluminum can be as high as 1.35. Friction Coefficients for some Common Materials and Materials Combinations Materials and Material CombinationsStatic Frictional Coefficient - *μs -* Clean and Dry SurfacesLubricated and Greasy Surfaces Aluminum Aluminum 1.05 - 1.35 0.3 http://www.engineeringtoolbox.com/friction-coefficients-d_778.html <http://www.engineeringtoolbox.com/friction-coefficients-d_778.html> The reason high horsepower drag cars can get a high coefficient of friction is because they put down fresh hot rubber on the track during their burnout (it's not just for show, it is required). They then back up and line the car up with those fresh rubber tracks. This results in hot sticky rubber to hot sticky rubber contact which results in a very coefficient of friction. That additional traction advantage continues down the entire pass, not just at the starting line. -- next part -- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20160211/4990cffb/attachment.htm> ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] EVLN: Venturi, OSU VBB-3 Electric Racer targets 372mph record 0-60mph:2s
Ordinary pavement in contact with rubber tires give a coefficient of friction of about 1. There is no getting around this. It limits the acceleration to about 1 g, which translates to a 0 to 60 mph time of about 2.7 to 2.8 seconds. To quote the BMW owners manual on the subject of traction control: "The laws of physics cannot be repealed". On the drag strip, they coat the surface with TrackBite. It is essentially contact cement. With a TrackBite coated surface, you can get a coefficient of friction of 3, or perhaps a little greater. Thus, on the drag strip, you can accelerate with 3 g's and get a 0 to 60 mph time that is significantly less than one second. The "layer of fresh rubber" helps, but that alone won't get you anywhere near the traction that TrackBite will. A properly prepped drag strip has maximum traction without any tires rolling on it. There are several reasons that dragsters smoke their tires: 1) It heats the tire compound, and make it adhere to the prepped track surface. 2) It removes a thin layer of aged hard rubber, and reveals fresh soft sticky rubber. 3) It heats the track (slightly). This is of little consequence these days. They have cooling coils under the track in the best drag strips to hold the track surface at the ideal temperature. 4) It creates a spectacle for the crowd. I should note that there are other tricks that drag racers use to help get traction. They use the rotational inertia of the vehicle to "plant" the rear tires during the launch sequence. They use the thrust of the upwardly pointed exhaust to give down force. Further down the track, they use wings. etc. to give many times the vehicle weight in down force to help traction. Bill D. On 2/11/2016 9:30 AM, Jack Wendel wrote: I though I heard of sub 3 second time reported, not theorized. I recently read of a car that does 0 - 60 in 2.2 seconds. Tesla is FAR from optimum. I have never gotten an explanation I could understand of how C_friction can exceed 1 as I have heard regarding dragsters. I'm not sure why you would assume 1.0 is the mas coefficient of friction possible. Just aluminum to aluminum can be as high as 1.35. Friction Coefficients for some Common Materials and Materials Combinations Materials and Material Combinations Static Frictional Coefficient - /μ_s -_ / Clean and Dry Surfaces Lubricated and Greasy Surfaces AluminumAluminum1.05 - 1.35 0.3 http://www.engineeringtoolbox.com/friction-coefficients-d_778.html <http://www.engineeringtoolbox.com/friction-coefficients-d_778.html> The reason high horsepower drag cars can get a high coefficient of friction is because they put down fresh hot rubber on the track during their burnout (it's not just for show, it is required). They then back up and line the car up with those fresh rubber tracks. This results in hot sticky rubber to hot sticky rubber contact which results in a very coefficient of friction. That additional traction advantage continues down the entire pass, not just at the starting line. -- next part -- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20160211/acd8ee04/attachment.htm> ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] EVLN: Venturi, OSU VBB-3 Electric Racer targets 372mph record 0-60mph:2s
> > The "layer of fresh rubber" helps, but that alone won't get you anywhere > near the traction that TrackBite will. Nor will TrackBite alone get you there without heating the tires and doing the burnout. Both are required with a car producing 1000 horsepower or more. > A properly prepped drag strip has maximum traction without any tires > rolling on it. > There are several reasons that dragsters smoke their tires: > 1) It heats the tire compound, and make it adhere to the prepped track > surface. > The ideal is when the track and tire are both at the optimum temperature. The tires must be heated past the optimum traction point so that they cool to the optimum temperate at launch. But excessive heating is bad as well. There is a huge variety of tire compounds available and a lot depends on the specific tire compound used. You can pick up barely used drag racing slicks cheap because that compound didn't work for their car.Unfortunately, it takes a bunch of trial and error to find the right compound. > 2) It removes a thin layer of aged hard rubber, and reveals fresh soft > sticky rubber. > If it removes a layer of rubber wouldn't that also remove the TrackBite? > I should note that there are other tricks that drag racers use to help get > traction. They use the rotational inertia of the vehicle to "plant" the > rear tires during the launch sequence. They use the thrust of the upwardly > pointed exhaust to give down force. Further down the track, they use wings. > etc. to give many times the vehicle weight in down force to help traction. > The suspension geometry is also tuned to provide the optimum downward force at launch. Both too much downward force and too little downward force are detrimental. -- next part -- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20160211/e2e00550/attachment.htm> ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
[EVDL] Help with Lithium Batteries, Control Units, and Cell Modules
Hello, Does anyone have any expertise in working with lithium batteries and is willing to answer some questions regarding how to connect them to controllers and cell modules? We're using 4 GBS 12V (4-Cell) 100Ah LiFeMnPO4 batteries, an EMUS BMS Control Unit, EMUS BMS Cell modules, and Emus BMS Control Panel v2.2.3 RC4 software. If anyone has worked with these or similar parts we would really appreciate your help! Thanks, Val ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
[EVDL] Looking for help learning to build EV motor
Hey, everyone, I am located in the Seattle, WA area (Woodinville, actually), and am interested in learning to build and control my own switched reluctance electric motor. The long-term goal of the project will be to build an EV from scratch (not a conversion), but since I do not have a hardware background yet, I'm looking for someone willing to at least help me take all my "unknown unknowns" to "known unknowns" ;). From there, if need be, I can tackle transforming those known unknowns into knowns on my own. Initially, I'd like to build a tabletop motor so that I can practice software control specifically of starting the motor, controlling regen during deceleration and acoustics, and controlling speed. If you know anyone able and willing to help, I would appreciate an introduction. --OR-- I've noticed Elon Musk has established a bit of a pattern of finding innovators whose ideas didn't fit the established system--Eberhard, Tarpenning, AC Propuslion for Tesla, Mueller for SpaceX. If you know of someone building versatile, high-performance motors in his/her garage who might be willing to discuss a possible EV venture with someone with an entrepreneurial and software background (me), I would also appreciate an introduction. You can find more about my background here: https://www.linkedin.com/in/gibsonbrad -- If you have someone in mind, or if you have thoughts or questions, please feel free to reach me directly at b...@humanenginuity.com. Thank you! All the best, -Brad Gibson ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
[EVDL] Looking for help learning to build EV motor
On Thu Feb 11 08:51:08 PST 2016 ev@lists.evdl.org said: >I am located in the Seattle, WA area (Woodinville, actually), and am >interested in learning to build and control my own switched reluctance >electric motor. The long-term goal of the project will be to build an >EV from scratch (not a conversion), but since I do not have a hardware >background yet, I'm looking for someone willing to at least help me take >all my "unknown unknowns" to "known unknowns" ;). From there, if need >be, I can tackle transforming those known unknowns into knowns on my own. You probably want to contact the SEVA list (Seattle Electric Vehicle Association) and possibly joint the EVTech email list. > Evtech mailing list > evt...@lists.nnytech.net > http://lists.nnytech.net/listinfo/evtech -- Try my Sensible Email package! https://sourceforge.net/projects/sensibleemail/ ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] Help with Lithium Batteries, Control Units, and Cell Modules
There is a book called "Battery Management Systems, for Large Lithium Iron Battery Packs," by Davide Andrea. This is a complicated subject. You said, "regarding how to connect them to controllers and cell modules?" Do you mean the hardware? Nuts Bolts, plugs and connectors? Or do mean how should the management system be designed? At any rate, I think the book would help you understand a lot you need to know. The Linden's Handbook of Batteries, is fascinating to read, comprehensive, and a great reference, though quite expensive. On Thu, Feb 11, 2016 at 11:13 AM, Connell, Valentina via EV < ev@lists.evdl.org> wrote: > Hello, > > Does anyone have any expertise in working with lithium batteries and is > willing to answer some questions regarding how to connect them to > controllers and cell modules? > > We're using 4 GBS 12V (4-Cell) 100Ah LiFeMnPO4 batteries, an EMUS BMS > Control Unit, EMUS BMS Cell modules, and Emus BMS Control Panel v2.2.3 RC4 > software. > > If anyone has worked with these or similar parts we would really > appreciate your help! > > Thanks, > Val > ___ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Read EVAngel's EV News at http://evdl.org/evln/ > Please discuss EV drag racing at NEDRA ( > http://groups.yahoo.com/group/NEDRA) > > -- To invent, you need a good imagination and a pile of junk. Thomas A. Edison <http://www.brainyquote.com/quotes/quotes/t/thomasaed125362.html> A public-opinion poll is no substitute for thought. *Warren Buffet* Michael E. Ross (919) 585-6737 Land (919) 576-0824 <https://www.google.com/voice/b/0?pli=1#phones> Google Phone (919) 600-2892 Cell michael.e.r...@gmail.com -- next part -- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20160211/d8a27079/attachment.htm> ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] EVLN: Venturi, OSU VBB-3 Electric Racer targets 372mph record 0-60mph:2s
2) It removes a thin layer of aged hard rubber, and reveals fresh soft sticky rubber. If it removes a layer of rubber wouldn't that also remove the TrackBite? They spray the track with TrackBite, not the tire. You do a burnout principally to remove this aged layer of rubber, particularly on the first run of the day. On subsequent runs, you can do a smaller burnout to just heat the tire surface. For a national event, they spray the entire 1/4 mile length of the track. For a local bracket race, they just spray the launch area. Maybe 100 ft. Whole different procedure. Track surface preparation is an art. They first clean the track surface with a rotary sweeper. Then they spray the track with a layer of TrackBite. Then they apply a thin coating of rubber dust. Next, they burnish the surface with a set of counter-rotating drag racing slicks. Finally, they apply a very light final spray of TrackBite. When the track is prepared optimally, the traction (adhesion) is so great that you will actually spall off little pieces of the underlying concrete. Basically, the you exceed the shear strength of the pavement material itself. Bill D. -- next part -- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20160211/44557989/attachment.htm> ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] EV Digest, Vol 40, Issue 21
Hi Brad, Specific SEVA members you should contact include Rich Rudman at Manzanita Micro, and Dave Cloud at Cloud Electric (although I understand Dave may have recently moved, we both use to live in Woodinville). Best Regards, Jim Waite Sent from Jim's Intergalactic Comm Device > > > Message: 4 > Date: Thu, 11 Feb 2016 08:51:08 -0800 > From: bRad Gibson via EV > To: Electric Vehicle Discussion List > Subject: [EVDL] Looking for help learning to build EV motor > Message-ID: <56bcbbfc.6030...@bradandmari.org> > Content-Type: text/plain; charset=UTF-8; format=flowed > > Hey, everyone, > > I am located in the Seattle, WA area (Woodinville, actually), and am > interested in learning to build and control my own switched reluctance > electric motor. The long-term goal of the project will be to build an > EV from scratch (not a conversion), but since I do not have a hardware > background yet, I'm looking for someone willing to at least help me take > all my "unknown unknowns" to "known unknowns" ;). From there, if need > be, I can tackle transforming those known unknowns into knowns on my own. > > Initially, I'd like to build a tabletop motor so that I can practice > software control specifically of starting the motor, controlling regen > during deceleration and acoustics, and controlling speed. > > If you know anyone able and willing to help, I would appreciate an > introduction. > > --OR-- > > I've noticed Elon Musk has established a bit of a pattern of finding > innovators whose ideas didn't fit the established system--Eberhard, > Tarpenning, AC Propuslion for Tesla, Mueller for SpaceX. > > If you know of someone building versatile, high-performance motors in > his/her garage who might be willing to discuss a possible EV venture > with someone with an entrepreneurial and software background (me), I > would also appreciate an introduction. > > You can find more about my background here: > https://www.linkedin.com/in/gibsonbrad > > -- > > If you have someone in mind, or if you have thoughts or questions, > please feel free to reach me directly at b...@humanenginuity.com. > > Thank you! > > All the best, > -Brad Gibson >> >> _ ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] Looking for help learning to build EV motor
Brad, I am someone who is most certainly NOT an expert in your field, but I try to approach any problem by finding its borders first. I do know that switched reluctance (SR) motors are very enticing due to their simplicity and therefore low cost, but they are mind-numbingly difficult to control well. And an EV is s very broad-spectrum application, so good control under a wide variety of conditions is a necessity. Several years ago I read an article on a new suite of SR motors that boasted a new level of control, but they don't seem to have taken the market by storm yet. Seems to me you'll need a mountain of expertise in SR motor theory before you start. Because that's what others have had at their disposal and haven't created an EV-suitable SR motor yet. TI and probably others have chips that are specifically designed for SR motors and they've devoted a lot of development time to the application. This is well-traveled ground. I know this appears to be throwing cold water on your plans, but in fact I'm hoping you have some new ideas that might bring SR motors to EVs. Do you? Can you share? Chris On Thu, Feb 11, 2016 at 11:51 AM, bRad Gibson via EV wrote: > Hey, everyone, > > I am located in the Seattle, WA area (Woodinville, actually), and am > interested in learning to build and control my own switched reluctance > electric motor. The long-term goal of the project will be to build an EV > from scratch (not a conversion), but since I do not have a hardware > background yet, I'm looking for someone willing to at least help me take > all my "unknown unknowns" to "known unknowns" ;). From there, if need be, > I can tackle transforming those known unknowns into knowns on my own. > > Initially, I'd like to build a tabletop motor so that I can practice > software control specifically of starting the motor, controlling regen > during deceleration and acoustics, and controlling speed. > > If you know anyone able and willing to help, I would appreciate an > introduction. > > --OR-- > > I've noticed Elon Musk has established a bit of a pattern of finding > innovators whose ideas didn't fit the established system--Eberhard, > Tarpenning, AC Propuslion for Tesla, Mueller for SpaceX. > > If you know of someone building versatile, high-performance motors in > his/her garage who might be willing to discuss a possible EV venture with > someone with an entrepreneurial and software background (me), I would also > appreciate an introduction. > > You can find more about my background here: > https://www.linkedin.com/in/gibsonbrad > > -- > > If you have someone in mind, or if you have thoughts or questions, please > feel free to reach me directly at b...@humanenginuity.com. > > Thank you! > > All the best, > -Brad Gibson > ___ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Read EVAngel's EV News at http://evdl.org/evln/ > Please discuss EV drag racing at NEDRA ( > http://groups.yahoo.com/group/NEDRA) > > -- next part -- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20160211/13cb40d5/attachment.htm> ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
[EVDL] Looking for help learning to build EV motor
Brad, I read your message too quickly and thought..just get a DC motor from E-bay, a strong controller, and get on with the conversion... Then I read your background. Then I carefully re-read your message. Scratch built EV, not a conversion. Start with building a switched reluctance electric motor and software control. The first time I heard of a Variable Reluctance motor was the EMB Lectra VR24 electric motorcycle that Scott Cronk developed, manufactured and sold. Some of the web pages have been saved for fans of the motorcycle and technology. http://www.electricmotorbike.org/index.php?page=lectra There are several Scott Cronk's in technology and the arts but here is a short bio on the VR motor guy: http://www.energymatters.net/scott-cronk.html I would contact him directly as from reading about him and the Lectra project he seemed like a down to earth type of guy with a passion for his work and some smarts. I do not know him personally. Good luck! Alan >-Original Message- >From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Jim Waite via EV >Sent: Thursday, February 11, 2016 2:01 PM >To: ev@lists.evdl.org; ev-requ...@lists.evdl.org >Subject: Re: [EVDL] EV Digest, Vol 40, Issue 21 >Hi Brad, >Specific SEVA members you should contact include Rich Rudman at Manzanita >Micro, and Dave Cloud at Cloud Electric (although I understand >Dave may have >recently moved, we both use to live in Woodinville). >Best Regards, >Jim Waite >Sent from Jim's Intergalactic Comm Device >> >> >> Hey, everyone, > > > >I am located in the Seattle, WA area (Woodinville, actually), and am > >interested in learning to build and control my own switched reluctance >> electric motor. The long-term goal of the project will be to build an >> EV from scratch (not a conversion), but since I do not have a hardware >> background yet, I'm looking for someone willing to at least help me >> take all my "unknown unknowns" to "known unknowns" ;). From there, if >> need be, I can tackle transforming those known unknowns into knowns on my >> own. >> >> Initially, I'd like to build a tabletop motor so that I can practice >> software control specifically of starting the motor, controlling regen >> during deceleration and acoustics, and controlling speed. >> >> If you know anyone able and willing to help, I would appreciate an >> introduction. >> Snip >> Thank you! >> >> All the best, >> -Brad Gibson >> ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] EVLN: Venturi, OSU VBB-3 Electric Racer targets 372mph record 0-60mph:2s
Years ago when I was paying attention to this stuff, road racers on slicks could pull 1.2g and higher without any special 'TrackBite'-like coatings on the track. I remember 2g in some situations, but I don't remember if banking was involved. The theory behind coefficient of friction is based on a laboratory test of one material against another. Both materials are smooth. There is no rolling involved, just flat surfaces either static or sliding against each other. Theoretically you can't get better than 1g, which is borne out is tests under these conditions. Sticky tires are also soft and gummy, meaning they interlock with the pebbly surface of asphalt. I believe there is also an improvement from (slight) slippage due to overspeed on acceleration. This disconnect is a case of the model (the laboratory test) not matching the actual situation (rolling slicks on asphalt). The fact that street tires get a coefficient of 1 is probably a coincidence. They can't have the grip of slicks because that would require too many compromises. Like not being as gummy, so not as much interlock. Chris On Thu, Feb 11, 2016 at 3:52 PM, Bill Dube via EV wrote: > > 2) It removes a thin layer of aged hard rubber, and reveals fresh soft >> sticky rubber. >> >> If it removes a layer of rubber wouldn't that also remove the TrackBite? >> > > They spray the track with TrackBite, not the tire. You do a > burnout principally to remove this aged layer of rubber, particularly on > the first run of the day. On subsequent runs, you can do a smaller burnout > to just heat the tire surface. > > For a national event, they spray the entire 1/4 mile length of the > track. For a local bracket race, they just spray the launch area. Maybe > 100 ft. Whole different procedure. > > Track surface preparation is an art. They first clean the track > surface with a rotary sweeper. Then they spray the track with a layer of > TrackBite. Then they apply a thin coating of rubber dust. Next, they > burnish the surface with a set of counter-rotating drag racing slicks. > Finally, they apply a very light final spray of TrackBite. > > When the track is prepared optimally, the traction (adhesion) is > so great that you will actually spall off little pieces of the underlying > concrete. Basically, the you exceed the shear strength of the pavement > material itself. > > Bill D. -- next part ------ > An HTML attachment was scrubbed... > URL: < > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20160211/44557989/attachment.htm > > > > ___ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Read EVAngel's EV News at http://evdl.org/evln/ > Please discuss EV drag racing at NEDRA ( > http://groups.yahoo.com/group/NEDRA) > > -- next part -- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20160211/16e2802a/attachment.htm> ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
Re: [EVDL] EV Boat
ttery amalgamations, advanced alkaline > fuel cells, thin/flexible PV modules' > These are needlessly expensive or just not viable at all. > > Jerry Dycus > > > > From: George McNeir via EV > To: ev@lists.evdl.org > Sent: Sunday, April 26, 2015 9:06 PM > Subject: [EVDL] EV Boat > > I have just joined and subscribe to EVDL with the idea that there are > likeminded folks interested in large EV boat design and building. The MOG is > not a commercial enterprise at this time but may be key to the creation of > such. Everything designed and implemented over the past 25 years is described > on the site given below and in the videos and blog that are also given below. > > Primarily I ask for any dialog that would help in furthering the progress > made to date. In effect, those with knowledge of the Navitas NPS600 motor > controller, eCycle electric motors, super cap/battery amalgamations, advanced > alkaline fuel cells, thin/flexible PV modules, internal grid power > distribution DC networks and anything else that may be contemplated for such > a craft is welcome. > > In its present form, the totally solar electric (drive and appliance) powered > boat is very functional. Considerations in decreasing onboard use of power as > well as better use of power now created and stored is paramount in continuing > further development. > > To date, all of the boat design & build has been funded through my own > personal funds as a hobby. Below are the background data to which I referred. > > Thank you in advance for your deliberation and comments. George > > > VIDEOSMoving > https://www.youtube.com/watch?v=LI2nnN5892A&feature=youtu.be > > Beached https://youtu.be/h92dWykE_Xo > > Tour https://www.youtube.com/watch?v=NRGKbayI2yI > > SITEhttp://www.mogcanalboat.com > > BLOGhttp://www.mognavy.blogspot.com/ > -- next part -- > An HTML attachment was scrubbed... > URL: > <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20150426/2660f74b/attachment.htm> > ___ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > For EV drag racing discussion, please use NEDRA > (http://groups.yahoo.com/group/NEDRA) > > > -- next part -- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20160211/09adc9fa/attachment.htm> ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
