[NSRCA-discussion] Electrics

[Robert Mairs]

If you ever decide to get rid of it, you'll get most of your money back, just ck ebay.

  ----- Original Message ----- 
  From: Earl Haury 
  To: NSRCA Mailing List 
  Sent: Friday, April 14, 2006 9:04 PM
  Subject: Re: [NSRCA-discussion] Electrics


  At least the good news with the Honda is that it's CARB certified (has a catalytic converter) and is quiet, max of 59 dB @ WOT, closer to 53 powering chargers, lots better than most gens (of course this is reflected in the price). 

  Earl
    ----- Original Message ----- 
    From: John Pavlick 
    To: NSRCA Mailing List 
    Sent: Friday, April 14, 2006 7:08 PM
    Subject: Re: [NSRCA-discussion] Electrics


    Yeah, and the glow motors are more environmentally friendly (emissions-wise) than the gasoline motor in the generator. And they don't generate waste oil which has to be recycled. Not to mention the lead in the deep cycle batteries that will eventually have to be recycled as well. How loud is the generator compared to a glow pattern plane? Don't forget, even when you charge from the wall using a power supply, THAT energy probably didn't come from hydro-electric power plants or solar cells. Geez, the more you think about it...

    John Pavlick
    http://www.idseng.com
      

      -----Original Message-----
      From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of Earl Haury
      Sent: Friday, April 14, 2006 7:51 PM
      To: NSRCA Mailing List
      Subject: Re: [NSRCA-discussion] Electrics


      The AGM (absorbed glass mat) deep cycle batteries are probably a better choice than gel. At least the AGM can be charge at high current (less time) than the gel cell and can cost less. I have an Optima 55 Ahr AGM (120 min @ 25A reserve rating) that works well for 3 charges using a pair of Astros, will do a 4th charge if  single chargers are used. It accepts 55A @ 14.2V from the Iota, current tapers as batt voltage rises - takes about 3hr until charge rate drops to 1A.

      Also picked up a Honda EU2000i generator. This thing is barely off idle running 4 Astros from an Iota supply. Picks up a little if a 400W soldering iron and shop fan is added. Living in a hurricane area I justified it as being able to also handle a few (select) household items. It does seem a bit ironic to change to E for airplanes and buy a gasoline fueled device to charge them -ugh!

      Earl


        ----- Original Message ----- 
        From: Nat Penton 
        To: NSRCA Mailing List 
        Sent: Friday, April 14, 2006 2:08 PM
        Subject: [NSRCA-discussion] Electrics


        The only battery giving me a problem is the lead acid Marine 'deep discharge'  battery used for field charging of the lipos. It has lost about 70% of it's capacity in seven months.

        It provided six 12min flts when new and was purchased from Academy Surplus for $40. It has provided a total of maybe 80 flights ( 30 cycles ??? ). The problem is likely due to my maintenance ( lack thereof ). I left the battery in a partial discharge state sometmes for weeks. You can find maintenance needs on Google at agmbatteries, courtesy Earl Haury.

        West Mountain sells a gell cell, 54#, 84ah, rated for 500 cycles @ 100% discharge ( 20hr discharge rate ), $149 del. I will see how it performs under our conditions.
                                                              Nat


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