This
all has to fit and not cause a problem for the flop tueb to get
hung up or be interfered with. So I started following the
plans for the BNC connector and vent line but what do you know I
drilled the BNC connector hole to the size required for the vent
line ...doh. So I changed my plans :-) I the picture
below you can see the flop tube fitting furthest to the left, then
comes the vapour return line for FI, then at the top the BNC
connector and below that the optical fuel sensor, then comes the
vent line fitting furthest to the right. I fabricated an
anti hangup guide like the plans stated but thats not fitted
properly yet.
I
carried out some basic movement tests of the flop tube and all
looks ok as far as the fittings go.

Now
some builders have not put the second hang up guide in place, but
my flop tube looks like it could get caught behind the stiffener
as shown below so I am going to put one in. The second photo
shows it.
