Fei Bao EF2000 Instruction Manual - page 6
AIR SYSTEMS:
The EF2000 uses pneumatic brakes and retracts so follow the steps and you
should have very reliable leak-free operation. Neatness counts so ensure all
airlines should be secured to the airframe to keep them from flopping around or
getting kinked. I used plastic clips to keep all the wiring and airlines both neat and
away from heat. The other very important thing is to cut off the end of each airline
dead square before installing it on the nipple. This is VITAL. You can either
purchase a professional tubing cutter from your dealer Intairco or similar, or you
can make up a jig to hold the airline and keep a sharp, new razor blade perfectly
upright as you cut. Either one works, just ensure that all ends of all airlines are cut
off dead square. Make sure all airlines are pushed ALL THE WAY onto their
nipples.
They should not need to be secured otherwise, but you can add fine wire safety
wraps if you like. Make sure all left and right matching airlines are the same
length, particularly the brake lines, or you will get uneven retraction or braking
action. It's worth taking the time to get everything pneumatic right the first time,
as having your landing gear fail to retract is not that bad, however having it fail to
deploy can really ruin your day and the paint on the bottom of your model.
FUEL SYSTEM:
The EF2000 has a very simple fuel system, I have used a 1.9 litre tank above the
ducting and 2 X 750 ml tanks on the engine rails. There is ample room for a UAT or
similar header tank. There is not much to go wrong, but like the pneumatic system
it does need to be done right the first time, with some careful craftsmanship.
As with the airlines, all fuel lines must be cut off square. I have used all Festo
fittings for all fuel lines or tie wire where Festo fittings are not available. The UAT I
used are from INTAIRCO and provide all Festo fittings. Everything needs to be
dead clean including the inside of all the fuel tanks.