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<channel>
	<title>Engineering</title>
	<link>http://www.teslamotors.com/blog4</link>
	<description>Design, engineering, and manufacturing</description>
	<pubDate>Tue, 23 Dec 2008 00:05:41 +0000</pubDate>
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			<item>
		<title>Roadster Efficiency and Range</title>
		<link>http://www.teslamotors.com/blog4/?p=70</link>
		<comments>http://www.teslamotors.com/blog4/?p=70#comments</comments>
		<pubDate>Mon, 22 Dec 2008 19:39:55 +0000</pubDate>
		<dc:creator>JB Straubel</dc:creator>
		
	<category>Uncategorized</category>
		<guid isPermaLink="false">http://www.teslamotors.com/blog4/?p=70</guid>
		<description><![CDATA[With more than 100 Roadsters delivered to customers so far and more on the road each week, it’s natural for some customers to run “experiments” on them. Because we have such an entrepreneurial and highly technical customer base, many of these experiments are quite detailed and attempt to answer questions that we have in some [...]]]></description>
		<wfw:commentRSS>http://www.teslamotors.com/blog4/?feed=rss2&amp;p=70</wfw:commentRSS>
		</item>
		<item>
		<title>Drag-racing in the Roadster: A first-person account</title>
		<link>http://www.teslamotors.com/blog4/?p=69</link>
		<comments>http://www.teslamotors.com/blog4/?p=69#comments</comments>
		<pubDate>Tue, 11 Nov 2008 01:11:17 +0000</pubDate>
		<dc:creator>Iain Morrison</dc:creator>
		
	<category>Performance</category>
	<category>Vehicle Engineering</category>
		<guid isPermaLink="false">http://www.teslamotors.com/blog4/?p=69</guid>
		<description><![CDATA[Tesla engineers have been keenly focused for some time on the 1.5 powertrain, which we have been testing extensively both on roads and at closed facilities.  We have our own data collection kit, but we wanted to see what sort of performance figures we would get from a public track.

The nearest venue to our [...]]]></description>
		<wfw:commentRSS>http://www.teslamotors.com/blog4/?feed=rss2&amp;p=69</wfw:commentRSS>
		</item>
		<item>
		<title>Weighty Matters Involving Electrons</title>
		<link>http://www.teslamotors.com/blog4/?p=68</link>
		<comments>http://www.teslamotors.com/blog4/?p=68#comments</comments>
		<pubDate>Tue, 16 Sep 2008 21:26:37 +0000</pubDate>
		<dc:creator>Marty Taft</dc:creator>
		
	<category>First Post</category>
	<category>Energy Efficiency</category>
	<category>Power Electronics</category>
	<category>Battery</category>
		<guid isPermaLink="false">http://www.teslamotors.com/blog4/?p=68</guid>
		<description><![CDATA[Have you ever wondered how much the electrons that power our car weigh?

As I was musing over the properties of our Tesla Roadster electric car the other day I was drawn to the single most massive component of our car which is the battery. This nearly 1000 pound system is composed of various chemicals, enclosures, [...]]]></description>
		<wfw:commentRSS>http://www.teslamotors.com/blog4/?feed=rss2&amp;p=68</wfw:commentRSS>
		</item>
		<item>
		<title>An Engineering Update on Powertrain 1.5</title>
		<link>http://www.teslamotors.com/blog4/?p=67</link>
		<comments>http://www.teslamotors.com/blog4/?p=67#comments</comments>
		<pubDate>Tue, 27 May 2008 23:15:43 +0000</pubDate>
		<dc:creator>JB Straubel</dc:creator>
		
	<category>Vehicle Engineering</category>
		<guid isPermaLink="false">http://www.teslamotors.com/blog4/?p=67</guid>
		<description><![CDATA[It has been several months since we have shared any progress updates on our powertrain development work and in particular how the “powertrain 1.5” program is progressing for the Roadster.
For those of you not thinking about this every day like we are   the powertrain 1.5 is an improved motor, inverter and gearbox designed [...]]]></description>
		<wfw:commentRSS>http://www.teslamotors.com/blog4/?feed=rss2&amp;p=67</wfw:commentRSS>
		</item>
		<item>
		<title>Mythbusters Part 3: Recycling our Non-Toxic Battery Packs</title>
		<link>http://www.teslamotors.com/blog4/?p=66</link>
		<comments>http://www.teslamotors.com/blog4/?p=66#comments</comments>
		<pubDate>Tue, 11 Mar 2008 20:54:16 +0000</pubDate>
		<dc:creator>Kurt Kelty</dc:creator>
		
	<category>Uncategorized</category>
	<category>Environment</category>
	<category>Battery</category>
		<guid isPermaLink="false">http://www.teslamotors.com/blog4/?p=66</guid>
		<description><![CDATA[As I make presentations at various conferences regarding our battery pack, or Energy Storage System (ESS), I’m often asked the question ”Isn’t the battery pack toxic” and whether or not it can be disposed of safely.  To reach a wider audience, I thought it best to address these questions in our blog.

Energy Storage System
First, [...]]]></description>
		<wfw:commentRSS>http://www.teslamotors.com/blog4/?feed=rss2&amp;p=66</wfw:commentRSS>
		</item>
		<item>
		<title>The Spin Stops Here</title>
		<link>http://www.teslamotors.com/blog4/?p=65</link>
		<comments>http://www.teslamotors.com/blog4/?p=65#comments</comments>
		<pubDate>Fri, 29 Feb 2008 02:52:50 +0000</pubDate>
		<dc:creator>Drew Baglino</dc:creator>
		
	<category>Performance</category>
		<guid isPermaLink="false">http://www.teslamotors.com/blog4/?p=65</guid>
		<description><![CDATA[Two weeks ago, I highlighted how Tesla moved from  waves to bits  in our motor and charge controller in the PEM. You might have left with the impression that as of June 2007, when the DMC replaced the analog controller, our work as DMC firmware engineers was complete. Fortunately for us (this is [...]]]></description>
		<wfw:commentRSS>http://www.teslamotors.com/blog4/?feed=rss2&amp;p=65</wfw:commentRSS>
		</item>
		<item>
		<title>Lotus Engineering Newsletter  Q&#038;A with Tesla&#8217;s Car Guy</title>
		<link>http://www.teslamotors.com/blog4/?p=64</link>
		<comments>http://www.teslamotors.com/blog4/?p=64#comments</comments>
		<pubDate>Thu, 21 Feb 2008 05:56:31 +0000</pubDate>
		<dc:creator>Blog Editor</dc:creator>
		
	<category>Vehicle Engineering</category>
		<guid isPermaLink="false">http://www.teslamotors.com/blog4/?p=64</guid>
		<description><![CDATA[In the beginning of January, Tesla Motors Vice President of Vehicle Integration, Mac Powell, sat down with Dave Leggett of just-auto for a Q&#38;A session which recently appeared in the 24th issue of the Lotus Engineering Newsletter, proActive. We wanted to share with you this excerpt from the Newsletter as well as include some comments [...]]]></description>
		<wfw:commentRSS>http://www.teslamotors.com/blog4/?feed=rss2&amp;p=64</wfw:commentRSS>
		</item>
		<item>
		<title>The Evolution of Motor Control: from Waves to Bits</title>
		<link>http://www.teslamotors.com/blog4/?p=63</link>
		<comments>http://www.teslamotors.com/blog4/?p=63#comments</comments>
		<pubDate>Mon, 11 Feb 2008 20:02:26 +0000</pubDate>
		<dc:creator>Drew Baglino</dc:creator>
		
	<category>Power Electronics</category>
		<guid isPermaLink="false">http://www.teslamotors.com/blog4/?p=63</guid>
		<description><![CDATA[When we last discussed motor control on this blog, EP10 was drifting around on the frozen lake in Arvidsjaur, Sweden. At that time (January 2007), we were in the process of co-evaluating Conti-Teves’ ABS system in tandem with Tesla’s motor control. We left the lake thinking highly of the Conti system and moderately pleased with [...]]]></description>
		<wfw:commentRSS>http://www.teslamotors.com/blog4/?feed=rss2&amp;p=63</wfw:commentRSS>
		</item>
		<item>
		<title>Smarter Charging</title>
		<link>http://www.teslamotors.com/blog4/?p=62</link>
		<comments>http://www.teslamotors.com/blog4/?p=62#comments</comments>
		<pubDate>Tue, 05 Feb 2008 21:20:08 +0000</pubDate>
		<dc:creator>Alec Brooks</dc:creator>
		
	<category>Environment</category>
	<category>Energy Efficiency</category>
	<category>Motor</category>
	<category>Battery</category>
		<guid isPermaLink="false">http://www.teslamotors.com/blog4/?p=62</guid>
		<description><![CDATA[Ten years ago when I was driving an EV1, one of the best perks was free parking and charging at LAX.  I would pull into one of the EV parking places by Terminal One, plug in, and go on my trip.  The charger would turn on right away – typically this would be [...]]]></description>
		<wfw:commentRSS>http://www.teslamotors.com/blog4/?feed=rss2&amp;p=62</wfw:commentRSS>
		</item>
		<item>
		<title>50 State Legal</title>
		<link>http://www.teslamotors.com/blog4/?p=61</link>
		<comments>http://www.teslamotors.com/blog4/?p=61#comments</comments>
		<pubDate>Thu, 24 Jan 2008 20:00:18 +0000</pubDate>
		<dc:creator>Malcolm Powell</dc:creator>
		
	<category>Safety</category>
	<category>Crash test</category>
	<category>British</category>
		<guid isPermaLink="false">http://www.teslamotors.com/blog4/?p=61</guid>
		<description><![CDATA[It has been quite a while since I have put finger tip to key board and joined the Tesla blogosphere. This might have something to do with my being a little bit busy as we have been maturing the Roadster from an amazing prototype to a full-blown production car.



From Darryl: I am experimenting with a [...]]]></description>
		<wfw:commentRSS>http://www.teslamotors.com/blog4/?feed=rss2&amp;p=61</wfw:commentRSS>
		</item>
		<item>
		<title>Where the Rubber Meets the Road</title>
		<link>http://www.teslamotors.com/blog4/?p=60</link>
		<comments>http://www.teslamotors.com/blog4/?p=60#comments</comments>
		<pubDate>Tue, 25 Sep 2007 03:01:14 +0000</pubDate>
		<dc:creator>Andrew Simpson</dc:creator>
		
	<category>Uncategorized</category>
	<category>On the road</category>
	<category>Vehicle Engineering</category>
	<category>Battery</category>
		<guid isPermaLink="false">http://www.teslamotors.com/blog4/?p=60</guid>
		<description><![CDATA[When I last posted to this blog in May, the news was a mixed bag.  Martin (Founder Martin Eberhard) had just officially revised our range expectations down from 250 miles to greater than 200 miles, but we remained committed to holding the line on 4 second 0-60 mph acceleration and delivering the Tesla Roadster [...]]]></description>
		<wfw:commentRSS>http://www.teslamotors.com/blog4/?feed=rss2&amp;p=60</wfw:commentRSS>
		</item>
		<item>
		<title>The Most Coddled Automotive Battery Ever?</title>
		<link>http://www.teslamotors.com/blog4/?p=59</link>
		<comments>http://www.teslamotors.com/blog4/?p=59#comments</comments>
		<pubDate>Wed, 08 Aug 2007 16:01:36 +0000</pubDate>
		<dc:creator>Erik Toomre</dc:creator>
		
	<category>First Post</category>
	<category>Safety</category>
	<category>Vehicle Engineering</category>
	<category>Battery</category>
		<guid isPermaLink="false">http://www.teslamotors.com/blog4/?p=59</guid>
		<description><![CDATA[We get some great questions and comments from the readers of our blogs, and this post takes its title from Brent, who on May 30 wrote:
“ The Roadster’s battery is arguably the most coddled automotive battery in history.  It has its own climate control system, several monitoring computers, and perhaps some other mojo &#8216;they&#8217; [...]]]></description>
		<wfw:commentRSS>http://www.teslamotors.com/blog4/?feed=rss2&amp;p=59</wfw:commentRSS>
		</item>
		<item>
		<title>The Magic of Tesla Roadster Regenerative Braking</title>
		<link>http://www.teslamotors.com/blog4/?p=58</link>
		<comments>http://www.teslamotors.com/blog4/?p=58#comments</comments>
		<pubDate>Fri, 29 Jun 2007 23:38:36 +0000</pubDate>
		<dc:creator>Greg Solberg</dc:creator>
		
	<category>Performance</category>
	<category>Energy Efficiency</category>
	<category>Vehicle Engineering</category>
	<category>Motor</category>
	<category>Power Electronics</category>
		<guid isPermaLink="false">http://www.teslamotors.com/blog4/?p=58</guid>
		<description><![CDATA[In a battery-powered electric vehicle, regenerative braking (also called regen) is the conversion of the vehicle’s kinetic energy into chemical energy stored in the battery, where it can be used later to drive the vehicle.  It is braking because it also serves to slow the vehicle.  It is regenerative because the energy is [...]]]></description>
		<wfw:commentRSS>http://www.teslamotors.com/blog4/?feed=rss2&amp;p=58</wfw:commentRSS>
		</item>
		<item>
		<title>Miles of Progress</title>
		<link>http://www.teslamotors.com/blog4/?p=57</link>
		<comments>http://www.teslamotors.com/blog4/?p=57#comments</comments>
		<pubDate>Thu, 10 May 2007 19:54:44 +0000</pubDate>
		<dc:creator>Andrew Simpson</dc:creator>
		
	<category>Performance</category>
	<category>Vehicle Engineering</category>
	<category>Motor</category>
		<guid isPermaLink="false">http://www.teslamotors.com/blog4/?p=57</guid>
		<description><![CDATA[They call me “the range guy” at Tesla Motors, which is fitting since it’s my job to characterize and improve the driving range of the Tesla Roadster. This means I get to:

Conduct official range testing according to EPA/CARB procedures,
Work with our development teams to extract the most miles out of the car,
&#8230;and best of all&#8230;
Spend [...]]]></description>
		<wfw:commentRSS>http://www.teslamotors.com/blog4/?feed=rss2&amp;p=57</wfw:commentRSS>
		</item>
		<item>
		<title>Richard Feynman: A Curious Character</title>
		<link>http://www.teslamotors.com/blog4/?p=56</link>
		<comments>http://www.teslamotors.com/blog4/?p=56#comments</comments>
		<pubDate>Wed, 11 Apr 2007 20:56:33 +0000</pubDate>
		<dc:creator>Wally Rippel</dc:creator>
		
	<category>Environment</category>
	<category>Vehicle Engineering</category>
		<guid isPermaLink="false">http://www.teslamotors.com/blog4/?p=56</guid>
		<description><![CDATA[Richard Feynman is an icon for many employees at Tesla Motors. In 1959 the Nobel-Prize winning physicist delivered an inspiring lecture, Plenty of Room at the Bottom, that encouraged research into what would come to be known as nanotechnology.
The nano world plays a key role for many EV elements. It is what makes today’s state-of-the-art [...]]]></description>
		<wfw:commentRSS>http://www.teslamotors.com/blog4/?feed=rss2&amp;p=56</wfw:commentRSS>
		</item>
		<item>
		<title>Slip-Sliding Away</title>
		<link>http://www.teslamotors.com/blog4/?p=55</link>
		<comments>http://www.teslamotors.com/blog4/?p=55#comments</comments>
		<pubDate>Tue, 03 Apr 2007 19:29:42 +0000</pubDate>
		<dc:creator>Iain Morrison</dc:creator>
		
	<category>Performance</category>
	<category>First Post</category>
	<category>On the road</category>
	<category>Safety</category>
	<category>Vehicle Engineering</category>
		<guid isPermaLink="false">http://www.teslamotors.com/blog4/?p=55</guid>
		<description><![CDATA[To ensure that the Tesla Roadster is as safe as possible in extreme conditions, we have just finished putting one of our Engineering Prototypes through an extensive test schedule at the Continental Proving Ground in Arvidsjaur, Sweden. The proving ground is in a beautiful location on and around a frozen lake about 60 miles from [...]]]></description>
		<wfw:commentRSS>http://www.teslamotors.com/blog4/?feed=rss2&amp;p=55</wfw:commentRSS>
		</item>
		<item>
		<title>Tesla Roadster Progress - From EP to VP</title>
		<link>http://www.teslamotors.com/blog4/?p=54</link>
		<comments>http://www.teslamotors.com/blog4/?p=54#comments</comments>
		<pubDate>Thu, 22 Mar 2007 23:15:59 +0000</pubDate>
		<dc:creator>Malcolm Powell</dc:creator>
		
	<category>Vehicle Engineering</category>
	<category>British</category>
		<guid isPermaLink="false">http://www.teslamotors.com/blog1/?p=54</guid>
		<description><![CDATA[We&#8217;ve just achieved a significant milestone on our road to Tesla Roadster production. Our first Validation Prototype was assembled at the Hethel facility in the U.K. and was recently airlifted to our San Carlos, Calif., workshop to commence system testing.

VP1 at the Hethel, U.K., facility. The car is riding
a little high because the battery pack [...]]]></description>
		<wfw:commentRSS>http://www.teslamotors.com/blog4/?feed=rss2&amp;p=54</wfw:commentRSS>
		</item>
		<item>
		<title>Site Selection</title>
		<link>http://www.teslamotors.com/blog4/?p=52</link>
		<comments>http://www.teslamotors.com/blog4/?p=52#comments</comments>
		<pubDate>Wed, 28 Feb 2007 22:03:27 +0000</pubDate>
		<dc:creator>Ron Lloyd</dc:creator>
		
	<category>First Post</category>
	<category>Company</category>
	<category>On the road</category>
		<guid isPermaLink="false">http://www.teslamotors.com/blog1/?p=52</guid>
		<description><![CDATA[Last week Tesla Motors announced the selection of a site in west Albuquerque where we will build a 150,000 square foot assembly facility for our planned four door sports sedan, code-named WhiteStar. Response to the news has been tremendous, and we’ve received numerous requests for more information about the decision. Ron Lloyd, who headed up [...]]]></description>
		<wfw:commentRSS>http://www.teslamotors.com/blog4/?feed=rss2&amp;p=52</wfw:commentRSS>
		</item>
		<item>
		<title>Cut From A Different Cloth</title>
		<link>http://www.teslamotors.com/blog4/?p=50</link>
		<comments>http://www.teslamotors.com/blog4/?p=50#comments</comments>
		<pubDate>Thu, 15 Feb 2007 17:16:48 +0000</pubDate>
		<dc:creator>Barrie Dickinson</dc:creator>
		
	<category>Performance</category>
	<category>First Post</category>
	<category>Vehicle Engineering</category>
	<category>British</category>
		<guid isPermaLink="false">http://www.teslamotors.com/blog1/?p=50</guid>
		<description><![CDATA[From the earliest days of our work developing the Tesla Roadster’s body, we realized we had several major challenges on our hands. We had to achieve a low level of aerodynamic drag to increase efficiency, and we had to keep our mass down in order to maintain a high power-to-weight ratio and achieve maximum acceleration. [...]]]></description>
		<wfw:commentRSS>http://www.teslamotors.com/blog4/?feed=rss2&amp;p=50</wfw:commentRSS>
		</item>
		<item>
		<title>Induction Versus DC Brushless Motors</title>
		<link>http://www.teslamotors.com/blog4/?p=45</link>
		<comments>http://www.teslamotors.com/blog4/?p=45#comments</comments>
		<pubDate>Wed, 10 Jan 2007 02:42:26 +0000</pubDate>
		<dc:creator>Wally Rippel</dc:creator>
		
	<category>Performance</category>
	<category>First Post</category>
	<category>Vehicle Engineering</category>
	<category>Motor</category>
		<guid isPermaLink="false">http://www.teslamotors.com/blog1/?p=45</guid>
		<description><![CDATA[Wally Rippel is a long-time proponent of electric vehicles. Prior to joining Tesla Motors, he was an engineer at AeroVironment, where he helped develop the EV1 for General Motors and was featured in the documentary movie, Who Killed the Electric Car? Wally has also worked for the Jet Propulsion Laboratory on electric vehicle battery research, [...]]]></description>
		<wfw:commentRSS>http://www.teslamotors.com/blog4/?feed=rss2&amp;p=45</wfw:commentRSS>
		</item>
		<item>
		<title>Blowing Hot and Cold</title>
		<link>http://www.teslamotors.com/blog4/?p=43</link>
		<comments>http://www.teslamotors.com/blog4/?p=43#comments</comments>
		<pubDate>Wed, 20 Dec 2006 21:14:40 +0000</pubDate>
		<dc:creator>Brian Randall</dc:creator>
		
	<category>Performance</category>
	<category>Energy Efficiency</category>
	<category>Company</category>
	<category>On the road</category>
	<category>Vehicle Engineering</category>
		<guid isPermaLink="false">http://www.teslamotors.com/blog1/?p=43</guid>
		<description><![CDATA[Editor&#8217;s note: Our last blog, Good Vibrations, chronicled some of the safety and durability tests we&#8217;ve been running on the Tesla Roadster. It prompted a number of questions, particularly related to climate control. So we convinced Brian, who is fully booked during regular business hours overseeing the tests, to postpone his holiday shopping a little [...]]]></description>
		<wfw:commentRSS>http://www.teslamotors.com/blog4/?feed=rss2&amp;p=43</wfw:commentRSS>
		</item>
		<item>
		<title>Good Vibrations</title>
		<link>http://www.teslamotors.com/blog4/?p=42</link>
		<comments>http://www.teslamotors.com/blog4/?p=42#comments</comments>
		<pubDate>Thu, 14 Dec 2006 02:49:48 +0000</pubDate>
		<dc:creator>Lisa Pavey Senior Director of Engineering &#38;</dc:creator>
		
	<category>Performance</category>
	<category>On the road</category>
	<category>Safety</category>
	<category>British</category>
		<guid isPermaLink="false">http://www.teslamotors.com/blog1/?p=42</guid>
		<description><![CDATA[Imagine yourself strapped into a Tesla Roadster speeding down a rough cobblestone path intended to cause so much agitation that the ride stops being fun and starts becoming more like work. It&#8217;s just a typical day at the Motor Industry Research Association (MIRA), an engineering and testing facility where we are punishing two of our [...]]]></description>
		<wfw:commentRSS>http://www.teslamotors.com/blog4/?feed=rss2&amp;p=42</wfw:commentRSS>
		</item>
		<item>
		<title>Never a Dull Moment</title>
		<link>http://www.teslamotors.com/blog4/?p=38</link>
		<comments>http://www.teslamotors.com/blog4/?p=38#comments</comments>
		<pubDate>Wed, 22 Nov 2006 19:47:39 +0000</pubDate>
		<dc:creator>Lisa Pavey</dc:creator>
		
	<category>Uncategorized</category>
	<category>Performance</category>
	<category>First Post</category>
	<category>Company</category>
	<category>British</category>
	<category>Motor</category>
	<category>Power Electronics</category>
		<guid isPermaLink="false">http://www.teslamotors.com/blog1/?p=38</guid>
		<description><![CDATA[At its heart, Tesla Motors is an engineering company. We get invited to a variety of events because of our technical expertise as well as a general interest in what we are doing and how we are doing it. I often get asked what it is like to work at Tesla Motors and to describe [...]]]></description>
		<wfw:commentRSS>http://www.teslamotors.com/blog4/?feed=rss2&amp;p=38</wfw:commentRSS>
		</item>
		<item>
		<title>Safety first - ouch!</title>
		<link>http://www.teslamotors.com/blog4/?p=28</link>
		<comments>http://www.teslamotors.com/blog4/?p=28#comments</comments>
		<pubDate>Tue, 03 Oct 2006 18:57:53 +0000</pubDate>
		<dc:creator>Malcolm Powell</dc:creator>
		
	<category>Uncategorized</category>
	<category>First Post</category>
	<category>Safety</category>
	<category>Crash test</category>
	<category>Vehicle Engineering</category>
	<category>British</category>
		<guid isPermaLink="false">http://www.teslamotors.com/blog1/?p=28</guid>
		<description><![CDATA[This blog continues to attract some fascinating questions and perceptions regarding the philosophies of energy consumption, alternative fuels, well-to-wheel efficiency and other significant issues that affect us all. Then there’s the technology of the car itself with its lithium ion battery pack, onboard charging system, power electronics to handle the immense energy available and that [...]]]></description>
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