Randkar X AIR, Инструкция по сборке, Страница: 69 / 86

ASSEMBLY MANUAL XAIR 2009, May, 20
©Randkar 2009 Prohibited reproduction / Reproduction interdite MANUEL DE MONTAGE XAIR 20 Mai 2009
Page 69 / 86
5)Weight balance
Weighing operation must be done with 3 similar weighing machines on an horizontal surface.
CG=146xA/A+B+C
The result must be located between 9 and 19
6) Lubrication:
The ideal lubricant is a silicone spray (if unavailable, you can use a WD-40 equivalent, but it is not so clean); apply to all points likely to
create unwanted friction: control tube washers and pivots, elevator and rudder hinges, aileron and pedal bearings, all pivot bolts of sticks and paral-
lelogram, as well as the fork main axle during assembly.
In short, to obtain smooth, precise controls, you need: barely taut cables, barely tight bolts, and regular lubrication.
7) Preflight checks:
When you are all done, sit in the cockpit, and make sure the control-to-control surfaces system works perfectly, and gives the right re-
sponses; this is nothing but vital common sense: it is no fun to find out during your first fly-around that the rudder cables have not been crossed.
Some pilots never get over the surprise.
So it’s imperative to make all the following controls:
- Stick back => elevator up
- Stick forward => elevator down
- Stick left => left aileron up and right aileron down
- Stick right => right aileron up and left aileron down
- Push right foot => rudder right
- Push left foot => rudder left
Notice: during the first 10 minutes of engine run-in, some unburnt oil can be blown out by the exhaust muffler. To avoid the stain of the wing fab-
ric, it is recommended to cover parts of the aircraft risking to be touched.
Only use sweet soap and fresh water to clean the fabric.
HAPPY FLYING ...
WEIGHT
FRONT WHEEL A
RIGHT REAR WHEEL B
LEFT REAR WHEEL C