Today's Message Index:
----------------------
1. 12:11 AM - =?utf-8?Q?Re:__Sun_'n_Fun_2018? ()
2. 09:25 AM - Rotax 914 Electric fuel pumps (William Daniell)
3. 03:45 PM - For all those long wing'd europas (Pete)
4. 05:33 PM - Re: Rotax 914 Electric fuel pumps (Mike Gregory)
Message 1
INDEX | Back to Main INDEX |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: f-8?Q?Re:_Europa-List:_Sun_'n_Fun_2018? |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Message 2
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Rotax 914 Electric fuel pumps |
I have the Europa System with one of the pumps connected direct to the
alternator and the other to the bus.
I get the logic of a direct connection to the alternator.
Why isn't the other pump connected direct to the battery so that if the
alternator fails you can switch off the buss run one pump off the battery?
(My EFIS has a back up battery and I carry a hand held so I can operate
with the buss off.)
thanks
Will
William Daniell
LONGPORT
+57 310 295 0744
Message 3
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | For all those long wing'd europas |
...a neat podcast. Crazy high true airpeeds, and chatter about flutter :)
http://inspire.eaa.org/2018/04/04/eaas-the-green-dot-jim-payne/
Message 4
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Rotax 914 Electric fuel pumps |
Hello Will,
You could connect the second fuel pump direct to the battery, via a
fuse/CB and switch as for the trim circuit, but why would you wish to?
In the event of alternator failure, unless you have a low-capacity main
battery, you have plenty of time to shed loads according to how long you
need to keep airborne. In the event of a forced landing and turning off
the main bus with the master switch, the electric trim is kept
operational to avoid heavy stick forces, but this logic does not apply
to the fuel pump.
If the engine has stopped and you are making a forced landing, a single
action to turn off the master switch before contact with the ground will
kill all electrics (except the trim and your built-in standby batteries)
and minimise the risk of a post-impact fire caused by an electrical
short circuit and hefty current from the main battery. In particular,
it will also stop the fuel pumps from potentially squirting fuel all
over the wreckage, without your having to remember to switch off your
fuel pump off separately.
Of course, you would never shut down the engine after parking, turn off
the master switch and forget to turn off your fuel pump!
Best wishes,
Mike
Dr Mike Gregory
Europa Club safety officer
01480 451655
07885 355765
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of William
Daniell
Sent: 05 April 2018 17:25
Subject: Europa-List: Rotax 914 Electric fuel pumps
I have the Europa System with one of the pumps connected direct to the
alternator and the other to the bus.
I get the logic of a direct connection to the alternator.
Why isn't the other pump connected direct to the battery so that if the
alternator fails you can switch off the buss run one pump off the
battery?
(My EFIS has a back up battery and I carry a hand held so I can operate
with the buss off.)
thanks
Will
William Daniell
LONGPORT
+57 310 295 0744
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|