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02-25-2019, 03:04 PM
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Join Date: Jul 2018
Location: Munich, Germany
Posts: 120
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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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02-25-2019, 03:12 PM
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Join Date: Aug 2015
Location: Leesburg, VA
Posts: 492
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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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02-25-2019, 03:42 PM
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Join Date: Sep 2017
Location: Douglas, GA
Posts: 65
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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 haven?t got to the point of firm decisions there.
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Byron
RV-10 40253 N253RV Flying
RV-14 140466 In build - Finishing kit
Douglas, GA. 2019 Dues paid
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02-25-2019, 03:46 PM
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Join Date: Jul 2018
Location: Munich, Germany
Posts: 120
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Great, thanks for the clarification!
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02-25-2019, 06:10 PM
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Join Date: Oct 2008
Location: Arlington, WA
Posts: 799
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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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Scott "Grumpy" Stewart
RV-7 N957RV (First Flight on Dec 18, 2009 )
RV-14 N144P (Empennage complete, wings almost complete, fuselage almost complete)
#866 on the Van's RV-7 hobbs
#6563 on Van's generic hobbs
Arlington, WA
Last edited by DakotaHawk : 02-25-2019 at 06:14 PM.
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03-02-2019, 11:16 AM
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Join Date: Sep 2015
Location: Falmouth Airpark, Mass (Cape Cod area)
Posts: 45
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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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03-02-2019, 04:52 PM
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Join Date: Jan 2018
Location: DFW
Posts: 65
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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
__________________
RV14-A QB
Factory Lycoming IO390 X, HZ CS 2 Blade,
Garmin Dual G3X 460, GTN 625, A/P 507, G5
GTR 200 & 20 COMM's, 245 audio, GTX 45R
Repairman Certificate
Last edited by jdmrv7a : 03-02-2019 at 04:54 PM.
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03-02-2019, 05:55 PM
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Join Date: Dec 2015
Location: Spring Hill, FL
Posts: 101
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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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RV-14A QB building, Lycoming 390 Thunderbolt arrived July 2019, Garmin avionics, Vertical Power, EFII-32 Ignition and Fuel, Whirlwind 300-72, Parts became a real airplane 8/15/2020.
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03-02-2019, 07:15 PM
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Join Date: Jun 2012
Location: Tallahassee, fl
Posts: 186
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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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Aka YellaDawg
RV14 First Flight 10.15.2019
RV14A under construction
2020 Dues Paid
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03-04-2019, 08:00 PM
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Join Date: Sep 2015
Location: Marion, IN
Posts: 231
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Quote:
Originally Posted by jdmrv7a
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.
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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.
__________________
Ray Dosh
LJ45 driver
RV-14 QB #140212
Tail feathers finished
Tail cone in progress
2020 DUES PAID
Marion, IN MZZ
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