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  #1  
Old 02-25-2019, 03:04 PM
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mjanduda mjanduda is offline
 
Join Date: Jul 2018
Location: Munich, Germany
Posts: 120
Default EarthX battery holder

Hi builders,

I am about to build the tail cone and there are battery angles. Instead of the stock lead battery I want to use a lithium battery for my 14. According to this forum the EarthX looks like a nice candidate for this.
Now I am wondering if I should already modify the battery angles in the tailcone so the lithium batteries will fit.
At this moment I think the lithium battery is smaller than the lead battery so I don't have to mind at the moment but I wanted to check with you folks!? Any experience here?

Thanks!

Malte
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  #2  
Old 02-25-2019, 03:12 PM
Nova RV Nova RV is offline
 
Join Date: Aug 2015
Location: Leesburg, VA
Posts: 362
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Those are called battery angles but they are used in the elevator bellcrank assembly much, much later in your build. I think they are shared with the RV-10 and are used as battery angles in the 10. The real battery box is part of the finish kit or FWF (can't remember), that is what you would want to modify or replace for a lithium battery
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  #3  
Old 02-25-2019, 03:42 PM
Bgill Bgill is offline
 
Join Date: Sep 2017
Location: Douglas, GA
Posts: 34
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Chris is correct. They are a carryover fron the -10 and will be used later but not for the battery. The -14 battery box is part of the fuselage kit - just received mine last week. It mounts on the firewall in the -14.

I am also considering the Earth-X and if I understand correctly it is a bit thicker than the Odyssey kit battery and may not fit in the supplied box. I havenít got to the point of firm decisions there.
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  #4  
Old 02-25-2019, 03:46 PM
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mjanduda mjanduda is offline
 
Join Date: Jul 2018
Location: Munich, Germany
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Great, thanks for the clarification!
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  #5  
Old 02-25-2019, 06:10 PM
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DakotaHawk DakotaHawk is offline
 
Join Date: Oct 2008
Location: Arlington, WA
Posts: 788
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Here’s a pic of the battery angle ribs that you’re talking about. The elevator bell crank is mounted here, and I used the extra space to mount a smoke oil pump. https://photos.app.goo.gl/r1XnprwZ3znehNys9
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RV-7 N957RV (First Flight on Dec 18, 2009)
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Last edited by DakotaHawk : 02-25-2019 at 06:14 PM.
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  #6  
Old 03-02-2019, 11:16 AM
bizpilot bizpilot is offline
 
Join Date: Sep 2015
Location: Falmouth Airpark, Mass (Cape Cod area)
Posts: 30
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Malte, I believe, EarthX makes a lithium battery that fits in the same space as the Oyssey. Check it out.

Bob Bisbee
RV14A kit 140308
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  #7  
Old 03-02-2019, 04:52 PM
jdmrv7a jdmrv7a is offline
 
Join Date: Jan 2018
Location: DFW
Posts: 24
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I installed the ETX900 and it is much lighter the Odyssey. I have 100 hours since new, no issues to report. The ETX900 is in the Van's QB battery box that was installed in the Philippines. Make sure your alternator is a Plane Power that is internally regulated. The Earth-X has dual redundant protection and the Plane Power is also protected. Incredible cranking power. Buy the Lithium battery chargers recommended on the Earth-X or Spruce website.

https://imgur.com/a/HIi4S8N
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Last edited by jdmrv7a : 03-02-2019 at 04:54 PM.
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  #8  
Old 03-02-2019, 05:55 PM
dmattmul dmattmul is offline
 
Join Date: Dec 2015
Location: Spring Hill, FL
Posts: 60
Default Earth X

I purchased the ETX900-VNT as I might need to install one on the cabin side of the firewall. They sell a dummy MT battery box for mock-up as needed. The bracket is not an issue removing the Vans pre-installed bracket and replacing.
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  #9  
Old 03-02-2019, 07:15 PM
Cwood2000 Cwood2000 is offline
 
Join Date: Jun 2012
Location: Tallahassee, fl
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I have a EarthX in my 14 (not flying yet) it fits nicely in the battery box on the firewall.
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  #10  
Old 03-04-2019, 08:00 PM
SabreFlyr SabreFlyr is offline
 
Join Date: Sep 2015
Location: Marion, IN
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Quote:
Originally Posted by jdmrv7a View Post
Make sure your alternator is a Plane Power that is internally regulated. The Earth-X has dual redundant protection and the Plane Power is also protected.
I understand that over-voltage protection is needed beyond the milliseconds that the EarthX BMS provides but please explain your statement. I'm planning a B&C alternator with external protection.
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