A Few Tips To Ensure Success - Extreme Flight 78" EXTRA 300 ARF Instruction Manual

A few tips to ensure success

1. We are very pleased with the level of craftsmanship displayed by the builders in our
factory. Through hundreds of grueling test flights containing maneuvers that no
aircraft should be subjected to, our prototypes have remained rigid and completely
airworthy. However, it is impossible for us to inspect every glue joint in the aircraft.
Take a few minutes and apply some medium CA to high stress areas such as servo
mounting trays , landing gear blocks, anti rotation pins, etc.
2. Having survived the journey half way around the world while experiencing several
climate changes, it is not uncommon for a few wrinkles to develop in the covering.
Fear not! These are not manufacturing defects, and are easily removed with a little
bit of heat. Use a 100% cotton tee-shirt and your heat gun and heat the covering
while gently rubbing the covering onto the wood with the t-shirt. Be careful not to
use too much heat as the covering may shrink too much and begin to lift at the
edges. Take your time, and a beautiful, paint like finish is attainable.
3. By the time your aircraft arrives at your door step it will have been handled by a lot
of people. Occasionally there are small dings or imperfections on some of the
surfaces. An effective method to restore these imperfections to original condition is
to use a very fine tipped hypodermic needle to inject a drop of water under the
covering material and into the ding in the wood. Apply heat to the area with a
sealing iron and the imperfection will disappear. Deeper marks may require that
this process be repeated a couple of times to achieve the desired result, but you will
be surprised at how well this technique works.
4. DO NOT SKIMP ON SERVOS! Your aircraft is equipped with very large control
surfaces that deflect over 45 degrees. A lot of servo power is required to prevent
flutter and to maintain the required deflection for maneuvers. We absolutely
recommend the use of METAL GEARED servos with a minimum of 120 oz. in of
torque.
5. Use a high quality epoxy for installing the composite control horns and hinges. We
highly recommend the use of Pacer Z-Poxy 30 minute formula. We have used this
glue for many years with zero failures. Recently we have been experimenting with
Pacer Hinge Glue and are very pleased with the results and ease of application and
clean up.
6. You may want to add a bead of silicone glue (Pacer Zap-A-DAP-A-GOO, etc.) or
RC-56 Canopy glue to the intersection of the plastic canopy/hatch and its wood
frame for additional strength and resistance to vibration. DO NOT USE CA here as
it will fog the canopy.
7. Your aircraft is built using very modern construction techniques and is very light
weight for its size. As with any high performance machine, regular inspection and
maintenance is a must. While disassembling your aircraft after a flying session, pay
close attention and inspect glue joints, linkages and loose covering to be sure the
airframe is sound. A few minutes spent doing this will help maintain airframe
longevity.
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