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03-18-2010, 09:40 PM
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Join Date: Mar 2010
Location: Northern CA
Posts: 10
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Replacement battery
Anybody ever used one of the bigger Odossy batteries to replace the Concord 25RG-XC in an RV8. I need the weight in the back so the Odossy ES PC680 which is about 1/2 the weight probably won't work. Any other ideas. Looking for something that lasts a little longer than the Concord.
Thanks
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03-18-2010, 10:36 PM
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Join Date: Oct 2005
Location: Vancouver, WA USA
Posts: 908
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2 X PC680? Might be good.
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03-18-2010, 11:32 PM
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Senior Curmudgeon
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 15,408
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Welcome to VAF!!!!
Hey Greg, welcome to the force 
Good to have you here.
I am using a Odyssey 925 in place of the standard aircraft batt, but is in a 10, not an 8.
Actually fits the tray with a little extra room, needed a spacer installed.
__________________
Mike Starkey
VAF 909
Rv-10, N210LM.
Flying as of 12/4/2010
Phase 1 done, 2/4/2011
Sold after 240+ wonderful hours of flight.
"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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03-19-2010, 03:47 AM
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Join Date: Mar 2006
Location: Gilbert, AZ
Posts: 1,627
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Quote:
Originally Posted by gcrane01
Anybody ever used one of the bigger Odossy batteries to replace the Concord 25RG-XC in an RV8. I need the weight in the back so the Odossy ES PC680 which is about 1/2 the weight probably won't work. Any other ideas. Looking for something that lasts a little longer than the Concord.
Thanks
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Use two Odyssey PC625's in parallel. I have two 625's independently switched. Can easily start the engine on one while the avionics are powered by the other.
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Ron Schreck
IAC National Judge
RV-8, "Miss Izzy", 2250 Hours - Sold
VAF 2021 Donor
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03-19-2010, 06:20 AM
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Join Date: Jan 2007
Location: Stuart, FL /Hartford, CT/Virgin Gorda,BVI
Posts: 3,122
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the pc-680
in my o-360 has been fine,light, small and powerful. welcome to the VAF FAMILY.  
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TURBO YES =VAF= Payed Jan2019
Ed D'Arcy
RV6-A 5,200+ hrs, R-44 1,600 hrs, Helicycle 320 hrs, gyro sold,35,000 miles flown in 2015 
Stuart, Fl / S WINDSOR,Ct / Virgin Gorda, BVI - under major repair from hurricane damage
VAF #840 EAA AOPA FAC FABA QB SPA
addicted pickle ball player
https://i.postimg.cc/tn3h4svg/IMG-3101.jpg
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03-19-2010, 08:23 AM
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Join Date: Mar 2010
Location: Northern CA
Posts: 10
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Thanks
Thanks to all for your comments. Appreciate your responses.
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03-19-2010, 04:26 PM
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Join Date: Mar 2005
Location: DVT Phoenix
Posts: 1,187
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If you need the weight, then make a weight out of lead equal to the difference in the batteries and use the lighter battery? Larry
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03-19-2010, 10:50 PM
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Join Date: Oct 2009
Location: Victoria BC, Canada
Posts: 13
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Odyssey 925 "L"
I just replaced my Concorde RG 25 XC with an Odyssey 925 "L". The Odyssey has slightly more weight than the Concorde. The "L" is for the positive post configuration (needed in my application for a replacement for the Concorde). My starter spins faster with the Odyssey.
The dimentions are almost the same (the Odyssey is about 1" smaller in length).
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03-19-2010, 11:37 PM
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Join Date: Mar 2010
Location: Northern CA
Posts: 10
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Thanks againq
After some measuring and as it turns out a guy in the next hangar, it appears the 925 will work great. I have a high compression engine (10 to 1) so the extra umph in the initial start will be appreciated. Now I have to make sure the prop is backed off the compression stroke or it won't spin it through. We shall see. I'll let you know. |
03-20-2010, 07:27 AM
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Join Date: Jun 2006
Location: 8I3
Posts: 3,562
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Replaced my RG-25XC with one of these: http://www.batteryspec.com/cgi-bin/c...nk&product=311
1/3 the price of a 925, and has better specs. Its almost an exact match for the RG-25XC but the terminals are reversed. I've had mine for a few months and it really whips the Hartzell over even when its cold.
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Please don't PM me! Email only!
Bob Japundza CFI A&PIA
N9187P PA-24-260B Comanche, flying
N678X F1 Rocket, under const.
N244BJ RV-6 "victim of SNF tornado" 1200+ hrs, rebuilding
N8155F C150 flying
N7925P PA-24-250 Comanche, restoring
Not a thing I own is stock.
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