Today's Message Index:
----------------------
1. 08:55 AM - Re: Re: Battery questions (Fred Klein)
2. 02:20 PM - Re: Fuselage weakness, or intentional ?? (Jan de Jong)
3. 03:17 PM - Re: Battery questions (Alan Carter)
4. 07:02 PM - Re: Re: Battery questions (Robert Borger)
Message 1
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| Subject: | Re: Battery questions |
On Oct 8, 2013, at 10:25 PM, Raimo Toivio wrote:
> If somebody has an obsession to update for a LiFePo style battery, I
would carry always omboard a spare one (or have a dual system and not
forget a 2nd master on).
>
> 10 minutes is an awful short time to have electricitet in the case
alt/chg failure - that is an another reason to have a dual system (if
you are a LiFePo - user boy).
Once again we find that "there's no free lunch"...
do not archive
Message 2
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| Subject: | Re: Fuselage weakness, or intentional ?? |
I ran out to the garage to check and "never changed" was not true
anymore when kit #461 (about 2000) was produced.
I do not say that the absence of foam core constitutes a weak point - I
wouldn't know.
Jan de Jong
On 10/7/2013 8:40 AM, Nigel Graham wrote:
> <nigel_graham@m-tecque.co.uk>
>
> Tony,
>
> I suspect that this an obsolete design feature from the old "classic"
> Europa, that had the bagage bay bulkhead at that position. When
> bonding component together, you don't want a foam core at the
> bond-site - hence the triangle (compare the angle of the foam with the
> angle of the bulkhead). When the classic was developed into the XS and
> the bulkhead moved back, this was never changed.
>
> It does not constitute a weak point and I would not worry about it.
> Adding more material will only add more weight.
>
> Nigel
>
> On 06/10/2013 06:07, Tony Renshaw wrote:
>> Gidday,
>> Whilst working around in the lower fuse it has concerned me that my
>> fuselage has what appears to be an intentional absence of core
>> material such that an obvious weakness exists in the fuselage
>> directly above the penetrations for the flap drive cross tube. Has
>> anyone externally reinforced this area, by adding core material and
>> strapping it in place, encapsulating it, and resulting in a
>> conventional sandwich construction concept?
>> Regards
>> Tony Renshaw
>>
>> Using Skitch on Mac for photo work.
>>
>
>
Message 3
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| Subject: | Re: Battery questions |
Hi All.
I just have one Odyssey haven't a clue as to the size of it, also a 914,
But to me it seems crazy to rely totally on electrics for fuel supply.
If the fuel stops the engine stops.
Why hasn't the 914 a mechanical pump, as well as an electrical pump. What's the
reason not have a mechanical pump in the system, the 912 have both.
Its the same as having a totally electric instrument panel, I much prefer
a dual system. Systems do fail and usually its the time when you really didn't
want it too.
Alan
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=410164#410164
Message 4
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| Subject: | Re: Battery questions |
Hi Alan,
The 914 requires higher pressure in the fuel bowl than the 912 due to the turbo.
The Rotax fuel pump can not supply sufficient pressure to force fuel into the
bowl. The Rotax stock method of supplying the fuel is to use two electric
fuel pumps. Either of which is capable of feeding the engine. One to be powered
from the main buss the other to be powered from the battery. So should the
main generator drop off, the second pump will be fed directly from the the battery
giving you time to get the aircraft safely on the ground.
Personally, I didn't like the arrangement either. I installed an engine driven fuel pump from Billet ( billetpump.com & http://www.billetpump.com/home2/pumps.html ). Not cheap, but it sure does work. And my engine is no longer electrically dependent. Obtaining a pump from them can be a trial. A couple years ago I tried to buy several pumps for folks in Switzerland and France and gave up after 18 months of trying. Kind of crazy company to deal with but they produce excellent products if you can ever get one.
I'd be happy to try them again should you or anyone else wish to acquire one of
the pumps.
If you go to http://www.europaowners.org/main.php?g2_itemId=78854 you can see my pump and the work I went to for installation. I believe that they have refined the pump since then and installation can be much easier.
Blue skies & tailwinds,
Bob Borger
Europa XS Tri, Rotax 914, Airmaster C/S Prop.
Little Toot Sport Biplane, Lycoming Thunderbolt AEIO-320 EXP
3705 Lynchburg Dr.
Corinth, TX 76208-5331
Cel: 817-992-1117
rlborger@mac.com
On Oct 9, 2013, at 5:17 PM, Alan Carter <alancarteresq@onetel.net> wrote:
Hi All.
I just have one Odyssey haven't a clue as to the size of it, also a 914,
But to me it seems crazy to rely totally on electrics for fuel supply.
If the fuel stops the engine stops.
Why hasn't the 914 a mechanical pump, as well as an electrical pump. What's the
reason not have a mechanical pump in the system, the 912 have both.
Its the same as having a totally electric instrument panel, I much prefer
a dual system. Systems do fail and usually its the time when you really didn't
want it too.
Alan
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