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Kellym
Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ
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 Posted: Wed Nov 10, 2021 6:12 am Post subject: ORe: Re: RV-10 Electrical Review with Electric AC and FlyEF |
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Besides your cautions the one other is weight and balance. The stock
RV-10 with stock battery location and weight needs ballast in baggage
compartment when flown with 2 upfront and no baggage, as in training
flight. Depending on where air conditioning components are and how they
affect the C.G.; battery placement and weight could be an issue. Going
with the latest lithium batteries to save weight may not be prudent for
c.g. location.
I don't think I would want to be managing a complex electrical
design(with electrically dependent engine) in IFR if one electrical
component fails. At least not for any extended period.
Kelly
On 11/10/2021 6:55 AM, Ron Burnett wrote:
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Here is the bottom line,in this Marine’s opinion, having flown dual EFII and now system 32 since 2017. If anything goes wrong, it is wise to land, rent a car, call a friend, or whatever. Do you want yourself, let alone possibly 3 others in jeopardy over your clever planning.
Initially I flew myRV-6A Subaru conversion with Ross Farnum’s system and then after a piston failure and immediate return to my airport it took me 4 years to get an O360 Lycoming with dual EFII flying. For a few months I have been flying with the system 32. Have always had the Bus Manager. Now I have 270 hours on the Lycoming, and dual Oddessey PC-680 batteries on the firewall. I buy one new battery each year but if the alternator quits, personally I wouldn’t fly more than 20-30 minutes max.
Good luck, but remember there is always a weak link somewhere.
Ron Burnett
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_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
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melstien
Joined: 02 Feb 2013
Posts: 4
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| Posted: Thu Nov 11, 2021 5:42 pm Post subject: Re: ORe: Re: RV-10 Electrical Review with Electric AC and F |
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Hello Kelly,
you are so right about weight and balance on the RV-10. Lighter weight batteries in the back will move the CG forward. What might be offsetting this is adding 2 batteries which may come close to the original PC680 weight but adds additional capacity.
I also did not mention that I am seriously considering the newer Whirlwind 300-3B/B-77 propeller designed for the RV-10. It is lighter than the 2 blade Hazell by as much as 8-13 pounds on the nose.
There a lot of variable to take into consideration.
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