Watt Meter,

[Grow Pattern]

Thank you.

Eric.
  ----- Original Message ----- 
  From: Scott Smith 
  To: discussion at nsrca.org 
  Sent: Wednesday, June 15, 2005 6:40 AM
  Subject: RE: Watt Meter,


  Appears to be just FAI.  From the FAI Sporting Code:

  5.1.2  Power source limitations: Any suitable power source may be utilised except those requiring solid propellants, gaseous or liquefied gaseous fuels. Electric powered model aircraft are limited to a maximum of 42 volts for the propulsion circuit.

    -----Original Message-----
    From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]On Behalf Of Grow Pattern
    Sent: Tuesday, June 14, 2005 9:15 PM
    To: discussion at nsrca.org
    Subject: Re: Watt Meter,


    Did you all know if there is a max voltage limit on electrics??? Is this true and if so where can I find it to read??? Is it just FAI??

    Need help finding it.

    Eric.
      ----- Original Message ----- 
      From: ronlock at comcast.net 
      To: discussion at nsrca.org 
      Sent: Tuesday, June 14, 2005 3:52 PM
      Subject: Re: Watt Meter, 


      Or if you want data quick and easy, the AstroFlight Whattmeter provides a direct readouts up to 100 amps, 60volts, 6,000 watts.  Also shows the
      amps put in during charge.  It does not have an internal battery, it needs at least 4 volts from the battery under test/charge.

      Later, Ron Lockhart

        -------------- Original message -------------- 

        > 
        > 
        > On Jun 14, 2005, at 2:13 PM, Jim_Woodward at beaerospace.com wrote: 
        > 
        > 
        > I'm wondering what the sources are for a good watt 
        > meter (for Hacker C50 14 XL setup), and an inexpensive IR temp gun 
        > are. 
        > 
        > 
        > 
        > Let's see: amps times volts equals watts for DC circuits. So, if you 
        > know the source voltage (with a voltmeter) and the current (using an 
        > ammeter), you can determine watts. I use a digital voltmeter and a 
        > Sears Craftsman 82062 DC/AC clamp meter for the respective 
        > measurements. I don't know what the upper limit is for the Sears 
        > clamp meter, but I have used it to measure about 50 amps. It appears 
        > to be very accurate (compared with sophisticated bench measurement 
        > devices) and costs less than $49.95 (occasionally $39.95 on sale). 
        > 
        > 
        > Ron Van Putte 
        > 
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