Pat Stewart
Well Known Member
I am looking for ideas on batery' and locations other than what the kit has defined. Anyone using the odysee battery and if so how are you mounting.
Pat
Pat
locations other than what the kit has defined.
My question was not because I am opposed to the kit location, I have in the past viewed pictures of multiple battery's and modified locations. Just looking at all ideas, as for why, Vans also has an option to put a battery on the firewall of the RV8 but unless you have an 0320 and fixed pitch prop that's not a good idea either. Just interested in other idea's.
Pat Stewart
RV8
RV8A
J3Cub
RV10 Building
My question was not because I am opposed to the kit location, I have in the past viewed pictures of multiple battery's and modified locations. Just looking at all ideas, as for why, Vans also has an option to put a battery on the firewall of the RV8 but unless you have an 0320 and fixed pitch prop that's not a good idea either. Just interested in other idea's.
Pat Stewart
RV8
RV8A
J3Cub
RV10 Building
I have an EarthX in a KTM motorcycle. After three years, it's been pretty much set-it-and-forget-it....I started with an Earth X. After the BMS failed and left me stuck for 5 days, I had to buy an Odyssey to get home. The Earth X does save weight and cranks the prop better. But if the BMS goes off line, you loose your thermal run away protection, so your grounded if you want to be safe. Also, you can risk damaging the battery if you need a jump by an FBO truck. ...
An Odyssey 925L on its side lets you keep the standard Van’s wiring. I started with an Earth X. After the BMS failed and left me stuck for 5 days, I had to buy an Odyssey to get home. The Earth X does save weight and cranks the prop better. But if the BMS goes off line, you loose your thermal run away protection, so your grounded if you want to be safe. Also, you can risk damaging the battery if you need a jump by an FBO truck. RV 10 is nose heavy so the cg station for the battery is in a good location. If you go Earth X (standard battery location) you may need some ballast in the baggage area when single pilot and light.
When I had a 925 I installed it with the terminals pointing to the side with the battery turned so they were “high” vs “low”.
How did you know the BMS failed? How did it manifest itself?
The EarthX is wired to the G3X touch in case of a BMS fault. My situation was it was a cold start in 28 degree weather. Two seconds after starting to crank the engine I lost all electrical power, but then it recycled. Second attempt the same occurred. A third attempt engine cranked and everything seemed normal. Long warm up and system check and all seemed good. About the time I was being given my IFR release, battery fault showed on the screen. Based on EarthX documents (and my experience) this was a no go. Called EarthX. I was told they had changed their procedure from “land at nearest” to “continue to to destination”. But you do not have the BMS protection. Maybe if I was airborne it’s an option but not prior to launch. Battery was a few months out of warranty so no coverage. I am not saying their battery is a bad product. Everything has its pros and cons. I just lost confidence in that battery. I did not like being left out in the cold………..literally. I believe the BMS is a good thing even though some say their batteries cannot go into a thermal run away. But if that was the case the BMS would not be required. Since the battery sits above the elevator push rod, it would not be a good place for a melt down to occur. When I spoke to the EarthX people at Osh, they recommended to go to a 1200 series, same footprint and the 900. They could not explain what occurred. Maybe just bad luck. But for 725 vs 200 dollars for the 925 Odyssey, I will stay old school for a while.
How did you know the BMS failed? How did it manifest itself?
I just lost confidence in that battery. I did not like being left out in the cold………..literally. They could not explain what occurred. Maybe just bad luck. But for 725 vs 200 dollars for the 925 Odyssey, I will stay old school for a while.
Interesting. Thanks for the comprehensive explanation.
26 pounds of lead in the tail? That's like buying an EarthX and an Odyssey and installing both, to negate the weight savings of one and the cost savings of the other.
I suspect there will be some interesting comments here to follow. Popcorn stocks will see a brief surge despite recent overall market decline.
Can you share pictures of how this weight was secured to the structure?
I know this is about batteries but something is not right if you need 26# of weight in the RV-10 tail??Our Earth X battery is on the inside of the FW, no heat issues. Had to put a 26 lb lead weight under the tail transition cover in the tail for CG to be good in the envelope.
In my mind this is a near ideal setup for the -10, as it allows me to fill the rear seats and baggage area without much concern for aft CG loading. I’ve carried some pretty heavy stuff out to the cabin in CO, and was still well ahead of aft CG.
I know this is about batteries but something is not right if you need 26# of weight in the RV-10 tail??
Sounds like the CG may be out of limits when empty (that's ok) but with a pilot on board it is just hard to believe.
Back to batteries.