REFLECTOR: 24 volt electrical system

[Douglas Holub]

I've decided to use 24 volts and LED lighting. 24 volts cuts my current requirements in half, and LED lighting consumes about 1/10th the power of incandescent lamps. It looks like a 20 amp, 24 volt alternator will be all I'll need. I'm going to put that B&C SD20 on the vaccuum pad and use it as my primary alternator, eliminating the weight and the moment of the belt driven alternator near the propeller. 

And I encourage everyone to look at those Odyssey batteries from Enersys (www.enersys.com). They seem to be the next level in capacity and durability. I'm using two PC680's in series. 

Doug Holub
Standard, top-door, FG w/ electric nose lift

  ----- Original Message ----- 
  From: Ron Brown 
  To: Velocity Aircraft Owners and Builders list 
  Sent: Wednesday, September 27, 2006 10:31 AM
  Subject: Re: REFLECTOR: 24 volt electrical system


  Andrew,

  Is there a particular reason you want to use 24 volts?  Since you are building your own airplane, you have lots more choices for equipping the airplane and lots more stuff is available for 12 volt systems from the automotive and marine worlds.  

  If you have to have 24 volts because of good deals on avionics, then you could go to http://www.parker.com/frameless/default.asp?substDivId=&FamIDq5&DivID=&GID=&Type=2&ID64&TechID=&PSID773 and order a replacement 24 vdc motor for your hydraulic pump.

  I understand the elevator trim system is already 24 volt (slows down the trim action since the motor runs slower on 12 volts).  You could probably use a power resistor in series to slow the trim motor down.

  Ronnie
    ----- Original Message ----- 
    From: Andrew Ellzey 
    To: Velocity Aircraft Owners and Builders list 
    Sent: Wednesday, September 27, 2006 10:27 AM
    Subject: REFLECTOR: 24 volt electrical system


    I would have liked to use a 24 volt electrical system on my aircraft, the problem is the hydraulic gear pump system being 12 volt @ 30 amp. Has anyone flying an XLRG found a way around this issue?

    Andy Ellzey


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