wrote:= > OK, 2 questions.=20 >=20 > 1. For those using Floscan fuel flow transducers: >=20 > Anyone have a floscan 201 sensor that's working ok while mounted in other t= han a horizontal position? My most convenient location would have the fuel p= ath flowing up at a 45 degree angle. In addition, the mounting can have the w= ires 'up', but mounting would be a bit more convenient with the wires pointi= ng horizontally. >=20 > 2. While researching Q1, I found a note from the guy who makes Airflow Per= formance fuel injection systems for Lycs (they run at around 15-30 psi), rec= ommending 1/4" (AN-4) fuel lines firewall forward to minimize fuel heating &= vapor lock. I've already been tempted to consider this instead of -6 (saves= weight, running lines is easier, etc) because the injection pumps &= automotive systems use small diameter lines, but was reluctant to go agains= t 'convention'. Has anyone who's flying an injected rotary used -4 fuel line= s to feed the engine? >=20 > Thanks, >=20 > Charlie --Apple-Mail-1-27514301 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8

I'm running 1/4". With 4 wing tanks, tu= be from tip tanks to wing root is aluminum, rest rubber. I have space betwee= n floor and belly where I mounted pumps and pressure regulator on a header t= ank so I don't have to return fuel to wing tanks and only 1 line going forwa= rd to motor.

Not flying yet but just finished fuel system. I put s= ome fuel through it yesterday to check for leaks, didn't do an actual flow t= est but it is plenty fast enough with those pumps that Tracy sells.

I think that the big hose theory is from the carby days, not really applic= able when you add a efi pump to the system.

How I convinced myself= 1/4" was ok, was to lay about twice as much hose as the plane needs on the w= orkshop floor, put a pump in the middle of it, a full tank at one end and an= empty at the other and let the pump transfer it, can't remember the flow ra= te but it was more than adequate.

Kind Regards

Andrew Mart= in

Lightwing speed 4000

Renisis

On 25/06/2011, at 10:14 PM, Charlie England <ceengland@bellsouth.net> wrote:

OK, 2 questions.

1. For those using Floscan fuel flow transducers:

Anyone have a floscan 201 sensor that's working ok while mounted in other than a horizontal position? My most convenient location would have the fuel path flowing up at a 45 degree angle. In addition, the mounting can have the wires 'up', but mounting would be a bit more convenient with the wires pointing horizontally.

2. While researching Q1, I found a note from the guy who makes Airflow Performance fuel injection systems for Lycs (they run at around 15-30 psi), recommending 1/4" (AN-4) fuel lines firewall forward to minimize fuel heating & vapor lock. I've already been tempted to consider this instead of -6 (saves weight, running lines is easier, etc) because the injection pumps & automotive systems use small diameter lines, but was reluctant to go against 'convention'. Has anyone who's flying an injected rotary used -4 fuel lines to feed the engine?

Thanks,

Charlie
=20

= --Apple-Mail-1-27514301--