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This discussion relates to Technology Review's article Battery Breakthrough?.

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  AmpmobilePeople
  

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  02/06/2007 09:37 PM

  Ready for a breakthrough

  We at Ampmobile Conversions already convert gas cars to total electric. Our concern is this would not work in our application due to the high operating voltages needed. We use lead acid batteries now to keep our cost down, so our cars are much like the first EV1s. If we could just get the nickel metal hydride batteries we would basically have the EV1 in range. So, until that happens, we wait, since we do not research money, like a lot of these companies. We are about actually converting to electric, not raising money to just study converting or  to just study batteries. We are about doing now with what we have available. If we had the money that is thrown around by all of this RESEARCH, we could and would have so many useable electrics on the road it would make your head spin. We are FOR REAL, not hype.

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  • 
    d3adp00l
    

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    02/06/2007 11:15 PM

    Re: Ready for a breakthrough

    if you are wanting better batteries why are you not using automotive size li-ion batteries?

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      clint
      

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      02/13/2007 10:08 AM

      Re: Ready for a breakthrough

      Where can I find 'automotive size' lith-ion batteries? Do you know?

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    CapacitorMan
    

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    02/07/2007 07:05 AM

    Re: Ready for a breakthrough

    You are right. At the other end, we are developing high energy storage capacitors, for real. But EEStors CLAIMS are way,way out there. I fear they are poisoning the water for all of us. So many people believe the outlandish.
    
    Oh,well, back to the bench.

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  Pfranc
  

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  02/08/2007 12:42 AM

  starting Larrys turbine engine

  Can this technology help larry at Pfranc.com start-up his small 85hp gas turbine jet engine on his amphibous ultralight aircraft?  The 1.7HP 28VDC starter motor needs hundreds of amps for about 10 seconds - and weight is very important because to be a legal FAA Part 103 ultralight the empty weight must not exceed 254 pounds.  I'm currently using 3 sets of 28 cell packs of Nicads at 1500mA,
  and have tried two 7.5AH gell cells (like used in computer UPS's) which work - but just a few times before going bad.  And the NiCads don't last many cycles either.  I suspect I'm abusing them.
  
  thanks,
  mybest, larry,
  Pfranc.com

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    CJC_PE
    

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    02/08/2007 04:54 PM

    Re: starting Larrys turbine engine

    If EEStor can make capacitors that can meet the specs in their patent, a 3 pound capacitor bank could store the equivalent energy of 15 amp hours at 28 volts. That would mean charging the capacitors to their 3500 volt rating. Some pretty substantial electronics would be required to regulate the current and voltage to the motor. Reduucing the voltage would solve some of the design problems, but charging to only 280 volts would increase the capacitors required to over 400 pounds. There are probably a lot of ways to do it, but it looks like a pretty difficult problem.

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    d3adp00l
    

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    02/08/2007 11:31 PM

    Re: starting Larrys turbine engine

    heres a thought Larry, milwaukee tools makes a 28v battery, its li-ion it wieghs only a couple pounds each is 3.0 amp hours, they recharge in 30  mins, a bank of 4 should handle your load easily

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      Pfranc
      

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      01/20/2008 03:59 PM

      Re: starting Larrys turbine engine

      Great idea so I bought a couple of the V28 tools that each came with two batteries and a charger.  At first they worked great but then something went wrong, maybe the spark ignitor had some nasty feedback but they burned out.  I opened 'em up and discovered a couple of IC's in the circuit that fired so bypassed them.  Then I discovered LiPo.  Wow, man, I bought a 30V pack that can handle 185AMPS for 15 seconds (enough to start my engine about 5 times) and weighs only 26 ounces!!!
      The only down side is, it cost $330.

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  dchemist
  

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  02/08/2007 05:05 PM

  Hope

  I find that the naysayer’s sometimes have a hidden agenda, such as an interest of some kind in oil.  But if this does turn out to be practical I see it being bought out by oil interests because controlling energy is control of the country.  They will not relinquish this power.  Kind of negative, but years ago I bought a book with over 200 patents for the "100 Mile Per Gallon carburetor".  All were owned by oil companies, very interesting.

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  • 
    CapacitorMan
    

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    02/09/2007 06:48 PM

    Re: Hope

    That is something less than believable...can you give a proper reference?  Or was this a mimeographed and hand-stapled "Report"?
    
    What would be the motive, in this day and age of a company who is being beaten down by foreign competition to hold back?
    
    Just for fun, I did a search of US patents on "100 mpg carburetors". Guess how many I found?
    NONE!
    
    Try it yourself
    http://www.uspto.gov/patft/index.html
    
    Get real or get lost.

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    • 
      d3adp00l
      

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      02/12/2007 11:41 PM

      Re: Hope

      on the carbs actually there are a ton of patents on them, look up numbers 2,026,798 or 4,177,779 or 4,972,821 I would suggest you do a little more diligent job of patent searching.

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      • 
        CapacitorMan
        

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        02/19/2007 08:21 AM

        Re: Hope

        Sorry, I stand corrected. There are of course, hundreds of patents on carbureators out there, the previous writer claimed "a couple hundred" that revealed 100mpg capability assigned, naturally, to oil companies.
        
        None of the three patents you revealed fit that criteria...so I dont have to be embarrased for our patent search, yet.
        
        It just doesn't make sense...if there was a workable carbureator out there, why wouldn't it be commercialized?
        
        Now watch the conspiracy theorists come out!

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