Fuel Cell Assembly; Saddle Tanks And Hopper Tank; Fuel Pick-Up Tubing - BVM Bandit arf Assembly And Operation Instructions Manual

FUEL CELL ASSEMBLY

NOTE: BVM uses AeroPoxy for tank assembly as well as major stress areas of model assembly. It is
slow curing, very strong, has great adhesion and is thixotropic - it stays where it is applied. Always check
the nozzle by discarding a 2" stream of glue when nozzle is first used or has been sitting idle for more
than 30 minutes. If another glue is used, be sure it has these properties.

SADDLE TANKS AND HOPPER TANK

Wash tank parts to remove mold release - use detergent and hot water.
#80 grit sand areas close to fitting holes inside and out for best glue adhesion.
Sand mating flange areas of brass parts to be glued.
Clean fittings in acetone.
Check the accessibility of the fuel outlets and vent fittings.
Glue vent fitting into tanks; orient the vents as indicated in drawing.
Glue brass receptacle in as shown.
Allow glue to set.
Do not sand outside of tanks, this could break the surface coat seal.
NOTE: The 6mm fuel tubing must be installed on saddle tanks before permanent installation into model.
Use a Dremel drum sander to scuff the lap joint of rear sections and mating surface of forward
section. Remove epoxy build up on edge of non lap joint section.
Trial assemble tanks, mark the overlap with pen, sand 1/8" beyond this line for glue adhesion.
Clean tank halves one more time and apply AeroPoxy to mating surfaces, wet the frayed edges of
Kevlar on edge of front section, then fit halves together. Use masking tape to form border for glue.
Pull tape while glue is still soft. Use a generous seal of glue on the outside surfaces. Flex tank slightly
to observe any voids, then finger wipe to form a filleted joint. Allow to cure thoroughly (24 hours).
See drawings for installation of tubing and clunks.
Check tanks for leaks by submerging in water and using only lung pressure, blow into tank through
fuel line. Pinch off ends and check for bubbles. If a leak is detected, scuff the area and patch with
AeroPoxy.

FUEL PICK-UP TUBING

Install the clear tubing (provided), attach to clunks and aluminum stopper. Wrap each with a piece of
safety wire. Install into tanks and check freedom of clunk movement. Hand tighten knurled disc.
NOTE: This urethane internal tubing will expand ½" per 5" of length after Kerosene soaking.
BVM © 2009 K5300-Current_manual-090808.doc
Assembly & Operation Manual
Page 45 12/2/2009