Tony, Although I agree entirely with doing as much as you
sensibly can before sticking the lid on, I would not
include battery fittings in this. It is more convenient by
far and saves a deal of weight if your battery can be
fitted forward (i.e. against the firewall above passenger
feet, where it needs only minimal strapping & structure to
fix it). The notion of delibrately looking to have an aft
C of G seems to me misguided - the further aft the more
readily a plane will spin. Where you need your C of G to
be is where any possible loading ofsmall pilot/big pilots;
full fuel/no fuel; full luggage/no luggage still leaves
within limits. I would advise leaving deciding on battery
location until you ve done a trial weighing with other key
components including paint completed. By all means work
out how you will run wiring and solidly fix battery in
either location, but do not commit. For what it is worth
my mono/914/Woodcomp wobbly prop has worked out extremely
well with a forward battery.
Regards, David Joyce, GXSDJ
Tony Renshaw <tonyrenshaw268@gmail.com> wrote:
><tonyrenshaw268@gmail.com>
>
> Hi Richard,
> Thanks for that. I have made a shelf for the battery
>under the Stbd floor stowage of the baggage bay, if I
>commit to it, but had not thought of needing access to
>the transponder unit so was going to keep it down the
>back with the antenna, and keep the high power cable run
>short between antenna and unit. Re the battery, it seems
>like I either consider a lead acid sealed cell battery
>like my Odyssey PC 680 at 7 kg on the pax footwell, or
>under baggage bay floor, or I could use a Lithium Polymer
>Haijiu at less tha 1 kg up front on the footwell. Because
>I have the 914 and electric fuel pumps, I could even have
>a dual battery setup at less than 2 kg! The Haijiu
>another builder has used to crank his 912 S for 4 years.
> Regards
> Tony Renshaw
> Sydney Aussie
>
>
>
> Sent from my iPad
>
>> On 15 Feb 2014, at 4:22 am, "richard"
>><rcollings@talktalk.net> wrote:
>>
>><rcollings@talktalk.net>
>>
>> Hi Tony, do as much as you can before you glue the top
>>on that's forward and aft , I spent a month doing the
>>interior fitting carpet, side panels etc and putting the
>>head lining in was an absolute bugger.
>> I have my battery fitted in the back under the luggage
>>floor on starboard side with Trigg transponder on the
>>port. Access to both is important and easy. I used 4
>>gauge wire to the firewall, and have no problems so far.
>> Best of luck
>> Richard
>>
>> -----Original Message----- From: Tony Renshaw
>> Sent: Friday, February 14, 2014 11:52 AM
>> To: <europa-list@matronics.com>
>> Subject: Europa-List: 914 battery location.
>>
>><tonyrenshaw268@gmail.com>
>>
>> Gidday,
>> In the process of deciding if my 914 powered
>>conventional undercarriage Taildragger should or will
>>need the battery to go down the back, beside the tail
>>plane counterbalance containment tower. If not, I can use
>>the mount that I have built back there for a Trigg
>>transponder remote unit mount. Also, in the not too
>>distant future if I decide on putting the battery back
>>there, well I'll need to run big cabling too before my
>>top goes on, hopefully mid year. Any thought much
>>appreciated.
>> Tony Renshaw
>> Sydney Aussie
>>
>>
>> Sent from my iPad
>>
>>
>>
>>
>>
>>
>> -----
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>>
>>
>>
>>
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