[NSRCA-discussion] JR and un-regulated 6V

[J.Oddino]

Wayne,
If your regulator was regulating properly your ESC would always see 6 volts and you could keep flying until you used more of your battery's capacity.  The regulator can't maintain 6 volts when the battery voltage drops below a certain point.  I'm not sure where that is with the MPI device.  With NiMHs you'd like to work down to 5.9 volts at the battery so selecting a lower regulation point is recommended.  The next question to be addressed is the cut off voltage of the ESC?  It should be sensing the battery voltage not the regulated voltage and set to some safe level like 5.9 volts.

Regards, Jim
  ----- Original Message ----- 
  From: Wayne Galligan 
  To: NSRCA Mailing List 
  Sent: Thursday, June 15, 2006 7:21 AM
  Subject: Re: [NSRCA-discussion] JR and un-regulated 6V


  Does running a regulator, like a 5.1v-5.5v or 6.0v regulator, have any signifigant draw on the battery as it regulates the voltage?  I have been using the MPI Miracle switch that regulates to 6v.  I can get (4) 15 min flights on a 1650mil NiMh pack(Sanyo) before my ESC says to stop flying.
  I will put back about 700-750 mil on the recharge.

  Wayne Galligan 
    ----- Original Message ----- 
    From: White, Chris 
    To: NSRCA Mailing List 
    Sent: Thursday, June 15, 2006 7:54 AM
    Subject: Re: [NSRCA-discussion] JR and un-regulated 6V


    Hi Matt,

    Are you using low-impedence nimh packs?   Would you divulge your battery source?

     

    Thanks, Chris

     


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    From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of rcmaster199 at aol.com
    Sent: Wednesday, June 14, 2006 5:03 PM
    To: nsrca-discussion at lists.nsrca.org
    Subject: Re: [NSRCA-discussion] JR and un-regulated 6V

     

    I am doing that with NO problems. Fast charged on the way to field most of the time, with a Serius fast charger. In my set-up, a 1650ma NiMH lasts about 3 flights longer than a 4 cell pack of equivalent capacity. Equivalent ending cell voltages of 1.20v unloaded (1.15V loaded with 1000 ma draw) for either battery. 

     

    Getting greater torque and speed as well as longer flight time. Best all around

     

    MattK


    -----Original Message-----
    From: Gene Maurice <gene.maurice at comcast.net>
    To: 'NSRCA Mailing List' <nsrca-discussion at lists.nsrca.org>
    Sent: Wed, 14 Jun 2006 15:36:18 -0500
    Subject: [NSRCA-discussion] JR and un-regulated 6V

    Anyone aware of any issues running unregulated 6v Nimh pack with JR Digital

    servos??  

     

     

     

    Gene Maurice

    gene.maurice at comcast.net

    Plano, TX

    AMA 3408, NSRCA 877

     

     

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