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914 fuel system

 
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pbuttles(at)charter.net
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PostPosted: Wed Jun 11, 2008 7:13 pm    Post subject: 914 fuel system Reply with quote

can anyone help me with a few questions?
im putting a 914 in a 701 .
where is the best spot for fuel pumps?
where in line should the fuel shut off be located?
where can I get the one way check valves rotax wants?
do you install one pump to run all the time and the other to be a switched bost pump?
does everyone have the wastegate servo override switch installed in the panel ?
thanks
Tracy


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Gilles.Thesee(at)ac-greno
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PostPosted: Wed Jun 11, 2008 10:51 pm    Post subject: 914 fuel system Reply with quote

Tracy,

Quote:
where is the best spot for fuel pumps?

As low as possible relative to the fuel tank(s).

Quote:
where in line should the fuel shut off be located?
where can I get the one way check valves rotax wants?

Pierburg, Aircraft Spruce, Andair...


Quote:
do you install one pump to run all the time and the other to be a switched bost pump?

Yes

Quote:
does everyone have the wastegate servo override switch installed in the panel ?

Yes.
Do it as per the manual.
Some info here
http://contrails.free.fr/engine_pierburg_en.php
http://contrails.free.fr/engine_pierburg_en.php
http://contrails.free.fr/engine_914_fuel_syst_test_en.php

Best regards,
--
Gilles,
http://contrails.free.fr


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grahamsingleton(at)btinte
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PostPosted: Thu Jun 12, 2008 1:29 am    Post subject: 914 fuel system Reply with quote

Tracy
Andair make a check valve.
Graham

Tracy wrote:
Quote:

can anyone help me with a few questions?
im putting a 914 in a 701 .
where is the best spot for fuel pumps?
where in line should the fuel shut off be located?
where can I get the one way check valves rotax wants?
do you install one pump to run all the time and the other to be a switched bost pump?
does everyone have the wastegate servo override switch installed in the panel ?
thanks
Tracy


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mjhamm01



Joined: 12 Jun 2008
Posts: 4

PostPosted: Thu Jun 12, 2008 3:41 am    Post subject: Re: 914 fuel system Reply with quote

[quote="pbuttles(at)charter.net"]can anyone help me with a few questions?

do you install one pump to run all the time and the other to be a switched boost pump?

========

Tracy, I think that you want both electric fuel pumps to be controlled with switches. My Sky Arrow has the main pump switched with a guarded switch; which of course runs all of the time unless I want to check the output fuel
pressure of the backup boost pump on the ground by turning off the main pump.

Marv


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