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tonyrenshaw268(at)gmail.c
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 Posted: Fri Apr 29, 2011 6:11 pm Post subject: Best device to ratify the Actual Fuel Flow on a 914 |
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Hi,
I am attempting to determine where my fuel lines will go within my tunnel, through my Singleton Firewall, and then up to my 914, then what path is best for my fuel return line to take to route fuel back to the tank, without going downhill, and then back up again. This is hard without having the 914 out of its box, which is why I'd like advice for where in the firewall I should cut holes for my fuel hose. I am building a Bob Berube Conventional undercarriage, so I don't have bungee cord to consider. I also see merit in having the fuel lines supported within the tunnel, albeit I have 2 bulkheads to transit, the first is an internal stiffener and dividing panel about 6" back from the firewall, and another stiffening bulkhead an inch or so forward of the throttle, that links internally within the tunnel the front vertical face of the thigh supports, where my maingear is mounted underneath. This is to create a box section stiffener. So, how high up can I run my fuel lines in the tunnel to exit Grahams firewall, and then have enough room for no radical bends up to engine inlet positions?
Thanks.......also:
I am aware of Matt Draille's Fuel Flow Controller advertised on his home page, and historically I recall others being available. I have only 1 Floscan 201B, and they aint cheap, plus I don't have the said device yet either. If Matts is the best, well problem solved, but I am wondering if there is a workaround, such as an EFIS that will do this. How have others with a 914 solved this problem??
Thanks
Reg
Tony Renshaw
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davidjoyce(at)doctors.org
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| Posted: Sat Apr 30, 2011 6:43 pm Post subject: Best device to ratify the Actual Fuel Flow on a 914 |
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Tony, I have Graham's firewall with my 914 mono. My 2 fuel lines run along
the top R side of the tunnel before going over the left side to meet up with
the fuel switch and dual out & return Floscan fuel flow senders (which need
to be in the low part of the fuel circuit to discourage bubble
accumulation) under the central part of the tank. The single hole in the
firewall (along with all of the others) is sealed with red plumber's heat
resistant silicone sealant. The fuel lines are secured with small cable
ties going through small paired holes (with the cockpit side covered by the
coachwork material)
The senders go to a JPI 450 instrument which subtracts return
from outward flow. Certainly at the time I was fixing this up this system
appeared to have been the Rolls Royce of the possibilities, and Nigel
Charles had gone as far as saying he would not contemplate fitting any other
sender than the Floscan. Whether you can get a sensible reliable answer with
just a single sensor, in the face of the high 914 return flow, I doubt. This
arrangement has worked well for me for 9 yrs.
Regards, David Joyce, G-XSDJ
---
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Ivor Phillips
Joined: 16 Jan 2006
Posts: 253
Location: London UK
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| Posted: Sat Apr 30, 2011 7:21 pm Post subject: Best device to ratify the Actual Fuel Flow on a 914 |
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Hi Tony
My fuel lines start of low to an Andair fuel valve followed by an Andair 375 Gascolator then to two inline filters followed by both fuel pumps all this is inside
The tunnel, then its uphill to the fuel pressure sender just below the tunnel top,
Then through the tunnel to the Floscan on top of tunnel behind the instrument panel,
Then up the inside of the firewall to a position directly inline with the fuel pressure
Regulator, this gives the shortest run with minimal heat sink, then back to the firewall going through just slightly to the strb side of the fuel feed and both covered
In fire sleeve,
Behind the firewall is my second Floscan wired to the Matronics box of
tricks, I used soft aluminium pipe from the transducer around the firewall and under the door to terminate into the aluminium vent fuel tank fitting, with aluminium pipe its easy to make gentle bends to reduce turbulence and improve fuel flow,
It sounds complicated but it users the shortest runs with the Gascolator at the lowest point in the system with the majority of fitting protected inside the tunnel from engine heat or outside cold, The fuel pumps/Filters/Gascolator are easily serviceable with a drop down door to the tunnel,
Regards
Ivor
G-IVER
On 30 April 2011 02:35, Tony Renshaw <tonyrenshaw268(at)gmail.com (tonyrenshaw268(at)gmail.com)> wrote:
[quote] --> Europa-List message posted by: Tony Renshaw <tonyrenshaw268(at)gmail.com (tonyrenshaw268(at)gmail.com)>
Hi,
I am attempting to determine where my fuel lines will go within my tunnel, through my Singleton Firewall, and then up to my 914, then what path is best for my fuel return line to take to route fuel back to the tank, without going downhill, and then back up again. This is hard without having the 914 out of its box, which is why I'd like advice for where in the firewall I should cut holes for my fuel hose. I am building a Bob Berube Conventional undercarriage, so I don't have bungee cord to consider. I also see merit in having the fuel lines supported within the tunnel, albeit I have 2 bulkheads to transit, the first is an internal stiffener and dividing panel about 6" back from the firewall, and another stiffening bulkhead an inch or so forward of the throttle, that links internally within the tunnel the front vertical face of the thigh supports, where my maingear is mounted underneath. This is to create a box section stiffener. So, how high up can I run my fuel lines in the !
tunnel to exit Grahams firewall, and then have enough room for no radical bends up to engine inlet positions?
Thanks.......also:
I am aware of Matt Draille's Fuel Flow Controller advertised on his home page, and historically I recall others being available. I have only 1 Floscan 201B, and they aint cheap, plus I don't have the said device yet either. If Matts is the best, well problem solved, but I am wondering if there is a workaround, such as an EFIS that will do this. How have others with a 914 solved this problem??
Thanks
Reg
Tony Renshaw
===========
target="_blank">http://www.matronics.com/Navigator?Europa-List
===========
http://forums.matronics.com
===========
le, List Admin.
="_blank">http://www.matronics.com/contribution
===========
[b]
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grahamsingleton(at)btinte
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| Posted: Sun May 01, 2011 2:10 pm Post subject: Best device to ratify the Actual Fuel Flow on a 914 |
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Ivor
You don't need anything downstream of the Andair GAS375, it will stop anything bigger than 70 micron, and water.
Graham
From: PHILLIPS I <ivor.phillips(at)ntlworld.com>
To: europa-list(at)matronics.com
Sent: Saturday, 30 April, 2011 22:42:03
Subject: Re: Best device to ratify the Actual Fuel Flow on a 914
Hi Tony
My fuel lines start of low to an Andair fuel valve followed by an Andair 375 Gascolator then to two inline filters followed by both fuel pumps all this is inside
The tunnel, then its uphill to the fuel pressure sender just below the tunnel top,
Then through the tunnel to the Floscan on top of tunnel behind the instrument panel,
Then up the inside of the firewall to a position directly inline with the fuel pressure
Regulator, this gives the shortest run with minimal heat sink, then back to the firewall going through just slightly to the strb side of the fuel feed and both covered
In fire sleeve,
Behind the firewall is my second Floscan wired to the Matronics box of
tricks, I used soft aluminium pipe from the transducer around the firewall and under the door to terminate into the aluminium vent fuel tank fitting, with aluminium pipe its easy to make gentle bends to reduce turbulence and improve fuel flow,
It sounds complicated but it users the shortest runs with the Gascolator at the lowest point in the system with the majority of fitting protected inside the tunnel from engine heat or outside cold, The fuel pumps/Filters/Gascolator are easily serviceable with a drop down door to the tunnel,
Regards
Ivor
G-IVER
On 30 April 2011 02:35, Tony Renshaw <tonyrenshaw268(at)gmail.com (tonyrenshaw268(at)gmail.com)> wrote:
[quote] --> Europa-List message posted by: Tony Renshaw <tonyrenshaw268(at)gmail.com (tonyrenshaw268(at)gmail.com)>
Hi,
I am attempting to determine where my fuel lines will go within my tunnel, through my Singleton Firewall, and then up to my 914, then what path is best for my fuel return line to take to route fuel back to the tank, without going downhill, and then back up again. This is hard without having the 914 out of its box, which is why I'd like advice for where in the firewall I should cut holes for my fuel hose. I am building a Bob Berube Conventional undercarriage, so I don't have bungee cord to consider. I also see merit in having the fuel lines supported within the tunnel, albeit I have 2 bulkheads to transit, the first is an internal stiffener and dividing panel about 6" back from the firewall, and another stiffening bulkhead an inch or so forward of the throttle, that links internally within the tunnel the front vertical face of the thigh supports, where my maingear is mounted underneath. This is to create a box section stiffener. So, how high up can I run my fuel lines in the !
tunnel to exit Grahams firewall, and then have enough room for no radical bends up to engine inlet positions?
Thanks.......also:
I am aware of Matt Draille's Fuel Flow Controller advertised on his home page, and historically I recall others being available. I have only 1 Floscan 201B, and they aint cheap, plus I don't have the said device yet either. If Matts is the best, well problem solved, but I am wondering if there is a workaround, such as an EFIS that will do this. How have others with a 914 solved this problem??
Thanks
Reg
Tony Renshaw
===========
target="_blank">http://www.matronics.com/Navigator?Europa-List
===========
http://forums.matronics.com
===========
le, List Admin.
="_blank">http://www.matronics.com/contribution
===========
http://www.matronics.com/con================
[b]
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