[EVDL] EVLN: 204.9mph BYU land speed record set (video)
http://www.bgr.in/news/electric-car-breaks-200-mph-barrier-to-set-new-land-speed-record/ Electric car breaks 200 mph barrier to set new land speed record By ANI Sep 21, 2014 [image http://st1.bgr.in/wp-content/uploads/2014/09/electriccarblue.jpg electriccarblue ] An electric car built by students at Brigham Young University has reportedly set a new land speed record breaking the former 200 miles-per-hour record for cars in its class. The car named ”Electric Blue” averaged a mind-blowing 204.9 miles-per-hour over two runs at the Bonneville Salt Flats this month, beating its own previous record from 2011 by nearly 50 miles-per-hour. Kelly Hales, an electrical engineering student at the university and captain of the car”s design team, said in a written statement that when they set the record three years ago they felt like they left a lot on the table, adding that on paper they thought they could get 200 miles-per-hour but they never had the conditions just right; until now, Huffington Post reported. Electric Blue competes in the ”E1” racing class, since it”s electrically powered and weighs less than 1,100 pounds. The sleek blue-and-white streamliner is made of lightweight carbon fiber and powered by lithium iron phosphate batteries. Its spaceship-like design has been modified by dozens of students over the course of 10 years. Following the record-setting run, the car has been retired, according to the design team. Dr. Mike Miles, a manufacturing professor at the university who worked as an advisor on the project, said in a statement that this was kind of the last hurrah, adding that they wanted to give them one final shot. [© 2014 BGR Media] http://www.huffingtonpost.com/2014/09/19/electric-car-land-record_n_5849004.html Electric Car Breaks 200 MPH, Sets New World Land Speed Record By Macrina Cooper-White 09/19/2014 [video http://www.youtube.com/watch?v=6lwD4LrOAVs BYU electric streamliner sets world land speed record Sep 2011 BYU Sep 30, 2011 An electric streamliner designed and built by BYU engineering students set a world land speed record for its weight class, averaging 155.8 mph over its two required qualifying runs, one of which was clocked at 175 mph. See details at http://tinyurl.com/3rkah3n ] Look at that car go! An electric car built by students at Brigham Young University has set a new land speed record for cars in its class. Electric Blue averaged a mind-blowing 204.9 mph over two runs at the Bonneville Salt Flats this month, beating its own previous record from 2011 by nearly 50 mph. “When we set the record three years ago we felt like we left a lot on the table,” Kelly Hales, an electrical engineering student at the university and captain of the car's design team, said in a written statement. “On paper we thought we could get 200 mph but we never had the conditions just right—until now.” Just check out the video above to watch the 2011 run. Electric Blue competes in the E1 racing class, since it's electrically powered and weighs less than 1,100 pounds. The sleek blue-and-white streamliner is made of lightweight carbon fiber and powered by lithium iron phosphate batteries. Its spaceship-like design has been modified by dozens of students over the course of 10 years. Following the record-setting run, the car has been retired, according to the design team. “This was kind of the last hurrah, Dr. Mike Miles, a manufacturing professor at the university who worked as an advisor on the project, said in the statement. We wanted to give them one final shot. [©2014 TheHuffingtonPost.com] ... http://www.topix.com/colleges/brigham-young-university/2014/09/electric-car-breaks-200-mph-sets-new-world-land-speed-record Electric Car Breaks 200 MPH, Sets New World Land Speed Record [image http://www.topix.com/pximg/mini-976218530b6130c35128399f5d027905.jpg ] ... http://www.redorbit.com/news/technology/1113238846/electric-blue-streamliner-speeds-past-its-former-record-092114/ BYU-Developed E1 Streamliner Tops 200 MPH In Setting New Land Speed Record September 21, 2014 [image http://www.redorbit.com/media/uploads/2014/09/electric-blue-streamliner.jpg video flash ] ... http://www.dnaindia.com/scitech/report-electric-car-sets-new-2049-miles-per-hour-world-land-speed-record-2020112 Electric car sets new 204.9 miles-per-hour world land speed record 20 September 2014 For EVLN posts use: http://electric-vehicle-discussion-list.413529.n4.nabble.com/template/NamlServlet.jtp?macro=user_nodesuser=204476 http://electric-vehicle-discussion-list.413529.n4.nabble.com/template/NamlServlet.jtp?macro=search_pagenode=413529query=evlnsort=date http://www.foxnews.com/tech/2014/09/22/do-video-game-sportscars-match-their-real-counterparts/ Forza Horizon2 video-game shows Tesla-S as a real porker slowheavy http://www.broadwayworld.com/bwwgeeks/article/Ultra-Accurate-ams-Sensor-Interface-Integrated-into-Battery-Management-Systems-in-Leading-Electric-Vehicles-2014091763 More-Accurate ams Sensor Interface
Re: [EVDL] Lithium batteries direct from China
Hi Lee, Just wanted to check if it was 3rd-hand reports or not. If you say they were bad cells, they were bad cells. Are there any testing statistics on the more modern Chinese cells (Yellow Thundersky, Blue CALB, etc)? Seems like people report a bad cell here or there but not the categorical failure to meet specs. One issue I have with testing hand-me-down or freebie cells is the cell may have been damaged by any number of mistakes in the charging or discharging regime. To get proper statistics, a person would have to buy a car's worth of batteries and then test each one. I am sure that some have done this. Any reports of what was found? I am leery of reports of bad cells by the average EV'er since there is a myriad of ways the cells can get screwed up with the many different balancing and charging scenarios. Cheers, Marcus On Tue, Sep 23, 2014 at 5:09 PM, Lee Hart via EV ev@lists.evdl.org wrote: Marcus Reddish via EV wrote: Are these the old white Thunder sky cells that failed? Seem to remember a picture of them leaking. Is it possible folks charged those early cells like they were lead and caused (or contributed to) the failures? I have not heard of any bad batch since the white cells, which was ages ago. Willie2 via EV wrote: The situation Lee describes dates to 2000-2003? Something like that. I know nothing of the situation but I believe they were LCP cells. Starting about 2005, LFPs were the preferred cells for conversions. I know of no quality or delivery problems with ThunderSky LFPs. My earliest ones were from a group buy organized by Victor Tikhonov in 2003. They were white prismatic Lithium-Cobalt cells, in both 90ah and 100ah models. Some of the 100ah cells were OK (maybe 3 out of 4 worked, but didn't meet specs). *All* of the 90ah cells were junk. Some leaked, but the main problems were low amphour capacity and excessive internal resistance. Resistance on the 90ah cells was so high that they overheated even with a 25 amp load. Maybe some of the purchasers abused their batteries and caused their failures; but I certainly didn't. I've continued to borrow, barter, and buy various lithiums for testing. Prismatics and cylindrical, LiCo, LiMn, LiFe etc. They have *consistently* failed to meet specs. Typically, their amphour capacity and internal resistance are out of spec, with large variations between cells, and a number of bad cells mixed in with the good. The most recent ones were GBS 100ah LiFe cells, tested just last year. The only exception has been A123 3.2v 2.5ah LiFe cylindrical cells; they were consistently good. I'm forever hopeful that the manufacturers will get their act together and start delivering an honest quality product, and stand behind them with a warranty. But so far, if I'd spent good money for a full pack of any of these batteries (except A123), I would have been screwed. At the moment, I'm considering getting some Nissan Leaf cells to test. I'm guessing that Nissan is likely to have made a *significant* effort to get a good, quality product. I just have to make sure I'm not getting Nissan's QC rejects! -- If you would not be forgotten When your body's dead and rotten Then write of great deeds worth the reading Or do these great deeds, worth repeating. -- Ben Franklin, from Poor Richard's Almanac -- Lee Hart's EV projects are at http://www.sunrise-ev.com/LeesEVs.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) -- Marcus Reddish -- next part -- An HTML attachment was scrubbed... URL: http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140924/3302c969/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)
[EVDL] EV's in Norfolk?
There is an annual car show in Norfolk, VA 18 Oct on the military base. Anyone have an EV they want to show to the crowds? Bob, WB4aPR -- next part -- An HTML attachment was scrubbed... URL: http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140924/175448b2/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)
Re: [EVDL] Stella Solar vehicle in San Francisco
wireless transfer... ~:[] On Mon, Sep 22, 2014 at 3:37 PM, Ed Blackmond via EV ev@lists.evdl.org wrote: On Sep 22, 2014, at 4:58 PM, Lawrence Rhodes via EV ev@lists.evdl.org wrote: ... So efficient you would never need to plug it in. It would even return energy to the grid. You would have to plug it in to return energy to the grid. Ed ___ 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) -- Marcus Reddish -- next part -- An HTML attachment was scrubbed... URL: http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140924/f965be83/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)
Re: [EVDL] Dissimilar metals on Headyways?
If I honeycomb arrange my cells I can get more to fit. The stock plates I have seen won't work as they are for square arrangements of cells, like this: http://www.manzanitamicro.com/components/com_virtuemart/shop_image/product/4_Cell_Bus_Bar_f_4e77a3a355a78.jpg Also, it isn't much effort and but is much knowledge gained to test Al vs. Cu. Since the cell is Al inside, it seems like Al might be better for that reason, but possibly worse for other reasons. Al wire is about 1/6 the price of Cu wire, but it would be a lot of work to hammer or crimp Al wire into a good shape for Headways. I called about electrically conductive Aluminum sheet -- it is not commonly used or stocked, and is very expensive (unlike the wire). So Al is either a lot of work or high cost, two more negatives I just learned about. Lee brings up a good point about the plates stressing the cell terminals. Here are some more data points on that front: o The cases on Headways are steel, so the cells are very strong. o The Headway plastic holders are surprisingly strong and rigid. http://www.manzanitamicro.com/components/com_virtuemart/shop_image/product/3_Cell_Plastic_H_4e77a2af4fd3f.jpg You have to push the cells in with a fair amount of force, the stress goes to the metal case. I made a 6x8 array with the plastic holders. That many cells weighs about 30 lbs (14 kg). To my surprise, I could lift opposite corners but couldn't detect the little 6x8 pack flexed or that the cells shifted at all. So maybe you can get away with plates on Headways better than for the large block prismatics. o To get the equivalent of cable cross section I need Cu plate about 0.022 in thick (the current with go through about 10 inches wide). That can bend a bit if flexed, but will still be pretty rigid between the posts... Hmmm, do I trust the Headway rings to be tough enough for plates or do something fancier with intercell connectors? Thanks all for the good ideas and discussion. Sent: Tuesday, September 23, 2014 at 11:50 AM From: Lee Hart via EV ev@lists.evdl.org To: g...@tylernz.com, Electric Vehicle Discussion List ev@lists.evdl.org Subject: Re: [EVDL] Dissimilar metals on Headyways? George Tyler via EV wrote: Why not just buy the link plates that headway sell, made for the purpose. Get the cell mounts at the same time? Are these just a flat bar that bolts directly between cells. If so, that's not a good way to do it. The cells will move slightly due to road bumps and vibration, The cell cases are plastic, which will expand and contract from temperature changes. The cases will also swell over time as the cells age. With rigid inter-cell jumpers, all this movement causes leaks and bad connections to develop over time. Your inter-cell cell jumpers should therefore have a bend or kink or other method to provide a little bit of flexibility or give to avoid straining the connections. This is true for *all* types of batteries; not just lithium. -- If you would not be forgotten When your body's dead and rotten Then write of great deeds worth the reading Or do these great deeds, worth repeating. -- Ben Franklin, from Poor Richard's Almanac -- Lee Hart's EV projects are at http://www.sunrise-ev.com/LeesEVs.htm ___ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub[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[http://groups.yahoo.com/group/NEDRA]) ___ 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)
