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
----- Original Message -----
From: "Tony Renshaw" <tonyrenshaw268@gmail.com>
Sent: Saturday, April 30, 2011 2:35 AM
Subject: Europa-List: Best device to ratify the Actual Fuel Flow on a 914
>
> 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
>
>
>
|